Large wide mouth jars in the 500ml to 1000ml range are one of the most demanding container formats in rigid plastic packaging, and the machine that makes them decides whether a program is profitable or painful. Protein powder tubs, cosmetic cream jars, pharmaceutical tablet containers, honey and sauce jars, pet supplement jars and powdered drink canisters all share the same production problem: a very large opening relative to the body, a heavy threaded neck that must seal reliably, a tall body that must hold wall thickness within tight limits, and a customer who expects the same jar weight and the same top-load strength on every pallet for years. Injection blow molding solves that problem better than any competing hollow molding route, but only when the machine has enough clamping force, enough shot volume and enough hydraulic stability to run large tools continuously.

Aibim, a Wanplas factory, has spent 12 years building injection blow molding machines and molds for exactly this class of container, with a technical lineage of roughly 20 years in the injection blow molding field. Aibim machines are running in more than 40 countries, the factory delivers over 100 lines per year, and it operates its own CNC machining center so that clamping frames, platens, core rod plates and tie bars are produced in-house rather than bought as anonymous castings. A new factory acquired in 2022 expanded assembly and testing capacity so that every machine can be run with the customer tool before shipment. Within that lineup the IBM75 is the large capacity model, and this guide explains in detail how it produces 500ml to 1000ml wide mouth jars with output that stays flat across shifts.

The sections below walk through the three-station one-step process, the geometry rules that govern wide mouth jar design, the complete IBM75 specification set with cavity and cycle data for the 500-1000ml window, the hydraulic and control architecture that delivers repeatable output, the resin choices from HDPE and PP through SAN, TPU, PC and PCTG, the application fields Aibim serves, the companion IBM65 and IBM55 Hybrid Electric models, a requirement-to-model selection table, mold and commissioning practice, and the service framework that backs the equipment after installation.

Why 500-1000ml Wide Mouth Jars Demand a Larger Class of IBM Machine

A 500-1000ml wide mouth jar is not simply a scaled-up small bottle. Shot volume, clamping force, core rod rigidity, cooling load and mold setting space all grow faster than container volume, which is why a machine sized comfortably for 100ml droppers will stall, flash or drift when asked to run a 1000ml tub. Understanding where the load actually goes is the first step in specifying the right machine.

Start with mass. A 500ml HDPE wide mouth food jar typically weighs 28 to 38 g depending on top-load requirement and wall specification. A 1000ml jar in the same resin typically weighs 50 to 68 g. Multiply by cavity count and add the runner system, and a four-cavity 500ml tool asks for roughly 150 to 180 g of shot weight while a three-cavity 1000ml tool asks for roughly 190 to 230 g. Because injection blow molding fills a thick-walled preform rather than a thin part, injection pressure requirements stay moderate, but the plasticizing unit must deliver that mass reliably every cycle without running the screw at the extreme end of its stroke. A general rule used by process engineers is to size the shot so the working stroke sits between 25 and 70 percent of theoretical capacity, which keeps melt residence time reasonable and avoids both dosing instability at very short strokes and thermal degradation at very long ones.

Next comes projected area and clamping force. In injection blow molding the injection station clamp must resist the cavity pressure acting on the preform projected area, while the blow station clamp must resist blow air pressure acting on the jar projected area. Wide mouth jars are the awkward case: the jar body diameter is large, often 90 to 120 mm for a 1000ml format, so even at a modest blow pressure of 0.6 to 0.9 MPa the separating force across a multi-cavity blow mold becomes significant. Undersized clamping shows up as a faint parting line witness on the jar shoulder, then as visible flash, then as accelerated wear on the mold faces. Specifying generous clamping force is cheaper than repairing a tool.

Mold setting space is the third constraint, and it is the one most often discovered too late. A three-station machine indexes the core rod plate between injection, blow and stripper positions, so the mold envelope must accommodate three station sets on one platen. Large jar tools with deep cavities and substantial cooling circuits need both height and daylight. The IBM75 uses a single-crossbeam, double-pole clamping framework with enlarged mold setting space precisely so that large-volume tooling can be installed without compromising water circuit routing or core rod support.

Finally, cooling dominates cycle time for thick-walled large jars. Roughly 60 to 75 percent of a jar cycle is heat removal, and heat load scales with part mass. A machine that can inject a 1000ml preform but cannot circulate enough coolant through core rods and blow cavities will simply run a slower cycle, eroding the output advantage of the extra cavity. Core rod cooling design, coolant flow rate and chiller sizing therefore belong in the machine specification conversation from the beginning, not as an afterthought during installation.

The Three-Station One-Step Injection Blow Molding Process Explained

Injection blow molding is a one-step hollow molding process in which a preform is injection molded onto a core rod, transferred while still hot to a blow cavity, inflated into the finished jar, and then stripped from the rod. The IBM75 executes this as a three-station one-step cycle on a single indexing plate, so no preform ever leaves the machine, no reheating oven is required, and the neck finish is molded once to injection tolerance and never touched again.

Station One: Preform Injection

The injection station is a conventional injection unit feeding a hot runner or insulated runner manifold into preform cavities. Each cavity contains a core rod that forms the interior of the preform and the full neck geometry, including thread, sealing land, tamper-evident bead and any anti-rotation features. Melt from the barrel fills the annular gap between cavity and core rod. Because the preform is thick-walled by design, typically 2.5 to 5 mm for a large jar, filling is stable and shear-induced defects are rare. Holding pressure compensates for shrinkage in the neck region, which is the dimensionally critical zone, then the preform is cooled only partially. This is the key difference from injection molding: the preform must leave the injection cavity still soft enough to be inflated, typically in a temperature window where the polymer remains above its softening range but below the point where it sags on the rod.

Station Two: Blow Molding

The plate indexes 120 degrees and carries the hot preform, still gripped on its core rod, into the blow cavity. The blow mold closes around the preform, and compressed air is introduced through the core rod at a controlled ramp rate. The preform inflates against the cavity wall, taking on the jar shape. Because the neck was already molded to final dimensions and remains on the rod, the blow step deforms only the body and shoulder. This preserves neck accuracy absolutely, and it is the technical reason injection blow molding is chosen for pharmaceutical and cosmetic jars where closure sealing is critical. Blow pressure for large jars is typically 0.6 to 0.9 MPa, applied in a two-stage profile: a gentle pre-blow that stabilizes material distribution, followed by full pressure that presses the wall against the cavity for cooling contact.

Station Three: Stripping and Discharge

A further 120 degree index brings the finished jar to the stripper station, where the jar is released from the core rod, usually by a combination of air assist and a mechanical stripper plate, and discharged onto a conveyor or into a take-out chute. On CE certified Aibim machines this station carries a long-distance digital laser sensor that confirms complete part removal before the plate indexes again, protecting the mold from a crash caused by a jar that failed to release. A light curtain guards the operator access zone. While the stripper station works, the injection station is already filling the next set of preforms, so the three stations operate in parallel and the machine cycle equals the longest single-station time rather than the sum of all three.

Why One-Step Matters for Jars

In a two-step process, preforms are molded, cooled fully, stored, then reheated and blown on separate equipment. That works well for PET bottles where the preform is compact and reheat is efficient. It works poorly for large wide mouth jars: the preform is bulky, the wide neck makes reheat profiles uneven, and the stored preform occupies substantial warehouse volume. The one-step route reuses the heat already in the polymer, eliminates the reheat energy entirely, removes preform handling damage, and shortens the path from resin to palletized jar to a single machine footprint. For a converter producing jars for a regional food or cosmetic customer, that means one machine, one operator station and one quality control point rather than three.

Table 1. Hollow Molding Route Comparison for 500-1000ml Wide Mouth Jars

Criterion	Injection Blow Molding (one-step, three-station)	Extrusion Blow Molding	Injection Stretch Blow (two-step)
Neck finish accuracy	Injection tolerance, molded once, never trimmed	Formed by pinch and calibration, requires trimming	Injection tolerance but reheat can distort wide necks
Flash and trim scrap	None; no pinch-off, no tail, no neck trim	Typically 10-30 percent regrind loop	None at blow, but preform handling losses occur
Wide mouth capability	Excellent; low blow-up ratio, uniform wall	Good but neck weight and trim quality vary	Limited; stretch rod geometry favors narrow necks
Weight consistency	Very high; shot controlled, no parison drift	Moderate; parison sag and die drift affect weight	Very high at preform stage
Handle capability	Not available with integral handles	Integral handles possible	Not available with integral handles
Energy per jar	Low; heat reused, no reheat oven	Medium; continuous extrusion plus regrind reprocessing	High; full reheat of cooled preforms
Tooling investment level	High	Medium	Very High for two tool sets
Best fit	Wide mouth jars, pharma and cosmetic containers, zero-flash requirement	Handleware, large drums, irregular shapes	High-volume narrow neck beverage bottles

Wide Mouth Jar Engineering: Neck Ratio, Blow-Up Ratio and Wall Uniformity

Wide mouth geometry changes the physics of blow molding in a way that favors injection blow molding: the larger the opening relative to the body, the lower the blow-up ratio, and the lower the blow-up ratio, the more uniform the finished wall. Designing a 500-1000ml jar therefore starts with three numbers: the neck-to-body ratio, the blow-up ratio and the length-to-diameter ratio of the body.

Defining the Wide Mouth Window

Packaging engineers generally treat a container as wide mouth when the opening-to-body-diameter ratio exceeds roughly 0.6, or when the neck inner diameter reaches 40 mm and above. In the 500-1000ml class this typically means neck finishes from 63 mm to 120 mm. A 500ml protein or cream jar often uses a 70 mm or 89 mm finish; a 1000ml powder tub commonly uses a 100 mm or 120 mm finish. Because injection blow molding forms the neck in the injection station, these large finishes carry no weight penalty from trimming and no ovality risk from a calibration step. The thread profile, the sealing land width, the tamper bead and the liner shelf are all molded features held to the same tolerance class as an injection molded closure.

Blow-Up Ratio and Wall Distribution

Blow-up ratio in injection blow molding is the ratio of the maximum jar body diameter to the preform outer diameter at the same axial position. For narrow neck bottles this ratio can reach 3.5:1 or more, and material distribution becomes highly sensitive to preform temperature profile. Wide mouth jars, by contrast, generally sit between 1.6:1 and 2.6:1 because the preform can be made almost as wide as the jar. That lower ratio means less stretching, less thinning at the shoulder and a far smaller temperature window sensitivity. In practical terms, a wide mouth jar tolerates a 3 to 5 degree Celsius variation in preform temperature where a narrow neck bottle might show visible wall variation from a 2 degree change.

The corollary is that the preform, not the blow mold, controls wall distribution. Preform wall thickness is profiled axially along the core rod: thicker where the jar will stretch most, typically the lower body and base transition, thinner where stretch is minimal, typically directly under the neck. On the IBM75, this profile is a mold design parameter set by the core rod taper and cavity contour, and once validated it repeats identically on every shot because the shot volume is metered rather than extruded.

Table 2. Wide Mouth Jar Design Guideline Data for the 500-1000ml Range

Jar Volume	Typical Neck Finish	Body Diameter	Blow-Up Ratio	Body Wall Thickness	Preform Wall Thickness
500 ml food jar	70 mm	88-95 mm	1.7:1 to 2.0:1	0.65-0.95 mm	2.6-3.4 mm
500 ml cosmetic jar	89 mm	95-102 mm	1.6:1 to 1.8:1	0.80-1.20 mm	3.0-4.0 mm
750 ml powder jar	100 mm	105-112 mm	1.8:1 to 2.1:1	0.75-1.10 mm	3.2-4.2 mm
1000 ml supplement tub	100-120 mm	110-125 mm	1.9:1 to 2.4:1	0.85-1.30 mm	3.6-5.0 mm
1000 ml tall sauce jar	63-70 mm	98-108 mm	2.2:1 to 2.6:1	0.80-1.25 mm	3.8-5.0 mm

Values in Table 2 are typical engineering starting points for tool design discussions. Final geometry depends on resin grade, top-load specification, closure system, filling temperature and any hot-fill or retort requirement, and should be confirmed through a preform simulation and a physical trial.

Top Load, Stacking and Base Design

A 1000ml jar filled with dense powder and stacked five cases high must carry a top load that a thin uniform wall cannot supply on its own. Three design levers matter. First, base geometry: a shallow push-up or a ribbed base panel converts axial load into hoop stress and prevents rocker base. Second, shoulder radius: a generous radius transfers load into the sidewall rather than concentrating it at the neck junction. Third, sidewall ribbing or panel design: shallow horizontal ribs raise buckling resistance dramatically for a small weight penalty. Because injection blow molding reproduces preform geometry exactly, these features perform consistently across a run instead of varying with parison behavior.

Common Wide Mouth Defects and Their Root Causes

• Thin shoulder with thick base: preform temperature too high at the upper zone, or the preform taper places too little material under the neck. Correct with barrel zone profile adjustment first, then core rod contour if the defect persists.
• Ovality at the opening: almost never a blow issue in injection blow molding; check core rod alignment, stripper timing and whether the jar is being pulled before the neck has cooled below its softening range.
• Visible flow marks on a clear PS or SAN jar: injection speed too high through the gate or melt temperature too low; raise melt temperature in small steps and reduce fill speed at the gate.
• Weight drift over a shift: normally traceable to hydraulic oil temperature rise changing valve response, which is exactly what variable displacement pump control and oil temperature management are designed to prevent.
• Base pearlescence or stress whitening in PP: preform cooled too far before blow; shorten injection station cooling or raise mold temperature at the base insert.
• Sealing surface not flat: check the stripper plate contact geometry and the neck cooling circuit; a wide sealing land needs dedicated cooling in the core rod shoulder.

IBM75 Machine Module: Full Specification for 500-1000ml Jar Production

The IBM75 is the large capacity model in the Aibim injection blow molding lineup and is configured specifically for containers approaching the upper end of the 3ml to 1000ml range the factory covers. It is a three-station, one-step machine built on a single-crossbeam, double-pole clamping framework with enlarged mold setting space, CE certified safety systems, PREFILL hydraulic technology and SD card parameter storage. The specification set below reflects a standard 500-1000ml wide mouth jar configuration.

Table 3. IBM75 Injection Blow Molding Machine Specification (Standard Wide Mouth Jar Configuration)

Parameter	Unit	IBM75 Typical Value	Engineering Note
Container volume range	ml	50-1000	Optimized for the 500-1000ml wide mouth window
Clamping force, injection station	kN	750	Sized for multi-cavity thick-wall preform tools
Clamping force, blow station	kN	750	Resists separating force across large jar projected area
Screw diameter	mm	55 (50 / 60 optional)	Barrel and screw matched to resin family
Screw L/D ratio	–	22:1	Balanced plasticizing and residence time
Theoretical shot volume	cm3	570	Work in the 25-70 percent stroke band for stability
Shot weight (PS reference)	g	520	Approximately 400 g in HDPE by density ratio
Maximum injection pressure	MPa	165	Thick preforms rarely need the full range
Plasticizing capacity	kg/h	95	Comfortable margin at 1000ml multi-cavity output
Mold setting space (W x H)	mm	750 x 620	Enlarged envelope for deep jar cavities
Maximum container diameter	mm	125	Covers 120 mm wide mouth finishes
Maximum container height	mm	225	Suits tall 1000ml sauce and powder formats
Cavity count, 500 ml jar	–	4	Standard high-output layout
Cavity count, 1000 ml jar	–	2-3	Three cavities where body diameter permits
Dry cycle time	s	4.5	Mechanical index and clamp movement only
Blow air pressure	MPa	0.6-0.9	Two-stage pre-blow and full-blow profile
Compressed air consumption	m3/min	1.2 at 0.8 MPa	Size the compressor with 30 percent margin
Heating power	kW	22	Barrel plus hot runner zones
Total installed power	kW	63	Nameplate rating, not running load
Typical running consumption	kW	32-38	Reflects minimum 35 percent energy saving design
Hydraulic oil tank capacity	L	600	Large volume stabilizes oil temperature
Cooling water requirement	L/min	90-130	Split between mold circuit and oil cooler
Machine dimensions (L x W x H)	m	6.2 x 2.4 x 2.6	Allow service access on all four sides
Machine weight	t	12	Verify floor loading before installation
Safety certification	–	CE	Laser sensor at stripper station plus light curtain

Figures above are representative of a standard build. Aibim configures screw geometry, cavity count, hot runner layout, take-out system and voltage to the specific jar drawing and factory conditions, so the final data sheet issued with a quotation is the controlling document.

IBM75 Output Data Across the 500-1000ml Range

Output is the number buyers actually plan around, and it depends on four variables: cavity count, part weight, cooling capacity and resin. The table below gives realistic production figures for common wide mouth jar formats on the IBM75, assuming a well-cooled tool, chilled water at 8 to 12 degrees Celsius and continuous operation.

Table 4. IBM75 Cavity, Cycle and Output Data for Wide Mouth Jars

Jar Format	Material	Part Weight	Cavities	Cycle Time	Cycles per Minute	Output per Hour	Output per 24 h
500 ml food jar, 70 mm finish	HDPE	32 g	4	15.0 s	4.0	960	23,040
500 ml cosmetic jar, 89 mm finish	PP	40 g	4	17.0 s	3.5	847	20,328
500 ml clear jar	SAN	46 g	3	18.5 s	3.2	584	14,016
600 ml powder jar	PP	42 g	4	18.0 s	3.3	800	19,200
750 ml supplement jar	HDPE	48 g	3	19.5 s	3.1	554	13,296
1000 ml supplement tub	HDPE	58 g	3	22.0 s	2.7	491	11,784
1000 ml tall sauce jar	PP	62 g	2	21.0 s	2.9	343	8,232
1000 ml clear jar	PS	66 g	2	20.0 s	3.0	360	8,640

Two practical observations follow from this data. First, output per hour falls faster than volume rises, because both part weight and cooling time increase with jar size while cavity count decreases. A plant planning a mixed portfolio of 500ml and 1000ml jars should build its capacity model around the 1000ml figures, not an average. Second, the difference between two and three cavities at 1000ml is roughly 43 percent more output for a moderate increase in tool investment, which is usually the single highest-return decision in the whole project. Whether three cavities fit depends on body diameter and the mold setting space, and this is exactly the calculation the Aibim engineering team performs before quoting.

What the Machine Frame Contributes

Large jar tools are heavy and the forces are asymmetric, so frame design is not cosmetic. The IBM75 uses a single-crossbeam, double-pole clamping framework rather than a four-tie-bar arrangement. Two consequences matter for wide mouth production. First, platen deflection under load is distributed through the crossbeam rather than concentrated at four corners, which keeps the parting line closed evenly across a wide multi-cavity blow mold and prevents the corner-cavity flash that plagues undersized machines. Second, the open sides created by the two-pole layout give unobstructed access for mold installation, water manifold routing and core rod inspection, which shortens changeover and makes preventive maintenance realistic rather than aspirational.

Because Aibim operates its own CNC machining center, the platens, crossbeam, core rod carrier plate and station index components are machined in-house to a controlled datum scheme. That matters for a three-station machine more than for a two-station one: any angular error in the index plate translates directly into core rod misalignment in the blow cavity, which shows up as uneven wall or as neck damage. Controlling that geometry internally, rather than assembling bought-in components, is a large part of why the machine holds alignment over years of service.

How the IBM75 Holds Stable Output Shift After Shift

Stable output is a system property, not a single feature. On the IBM75 it comes from four layers working together: a hydraulic system that delivers the same pressure and flow at hour one and hour twenty, a thermal system that holds melt and mold temperature within a narrow band, a mechanical index that repeats position precisely, and a control system that stores and reloads validated parameters without operator interpretation. Take any one away and the others cannot compensate.

PREFILL and Variable Displacement Pump Hydraulics

Conventional fixed-displacement hydraulic machines run the pump at full flow continuously and dump surplus oil across a relief valve. Three problems follow. Energy is wasted as heat. Oil temperature climbs during a shift, changing viscosity and therefore valve response, so timings that were correct at start-up drift by mid-shift. And the constant heat load forces the cooling system to work harder, which adds its own energy cost.

The IBM75 uses a variable displacement pump pressurizing system combined with Aibim PREFILL technology. The variable displacement pump delivers only the flow the current movement requires, so surplus flow and the associated heat generation largely disappear. PREFILL addresses the specific problem of large-volume clamp movements: instead of forcing the entire clamp stroke through the pump, oil is drawn into the clamp piston through a large prefill valve during the rapid approach phase, and the pump supplies only the final pressurizing volume. The clamp closes fast, the pump stays small, and the peak power draw drops sharply.

The measurable results are the ones a plant manager cares about. Aibim specifies a minimum 35 percent energy saving compared with conventional hydraulic machines of equivalent capability. Just as important, oil temperature stabilizes within a narrower band, which means valve response, injection speed profile and clamp timing stay consistent from the first jar of a shift to the last. Weight drift over a production run is one of the most common complaints on older machines, and it is very often a hydraulic thermal problem rather than a molding problem.

Thermal Control Across Barrel, Runner and Mold

Injection blow molding depends on delivering the preform to the blow station within a controlled temperature window. Too hot and the preform sags on the rod and the jar shows thin shoulders. Too cold and the material will not inflate evenly, producing base whitening and high internal stress. The IBM75 therefore runs closed-loop control on all barrel zones, the hot runner manifold and nozzle zones, and the mold circuits, with independent set points and alarms.

For wide mouth jars a common practice is to run a slightly rising barrel profile with a stable nozzle zone, then split mold cooling into at least three circuits: neck and sealing land, body cavity, and base insert. The neck circuit runs coldest because neck dimensional stability governs closure fit. The base insert circuit is often run slightly warmer to avoid stress whitening in PP. Because these circuits are independently controlled, a process engineer can adjust one zone without disturbing the rest, which is what makes incremental optimization possible.

SD Card Parameter Storage and Recipe Portability

A validated process is an asset, and the IBM75 treats it as one. Complete parameter sets, including temperature profiles, injection and holding profiles, blow timing, index timing and stripper settings, are stored to an SD card. That single feature solves several operational problems at once. A product changeover becomes a recipe reload rather than a manual re-entry of dozens of values, which removes both the time and the typing errors. A validated process can be copied to a second machine of the same model, so a plant running two IBM75 units produces identical jars on both. A parameter set can be archived before an experiment and restored instantly if the experiment fails. And when a customer audit asks how process control is maintained, the answer is a stored, versioned recipe rather than a paper log.

Mechanical Repeatability and Safety Interlocks

The three-station index plate must return each core rod to the same position within a tight tolerance thousands of times per day. The IBM75 index drive is designed with positive positioning and the plate is machined in-house on the Aibim CNC center to hold that datum relationship. On the safety side, the CE certified configuration places a long-distance digital laser sensor at the stripper station to confirm part removal before the next index, and a light curtain across the operator zone. Both are genuine production stability features as well as safety features: a machine that never crashes a mold on an unreleased jar is a machine that keeps running.

Table 5. Stability and Efficiency Comparison: IBM75 Architecture versus Conventional Hydraulic IBM Machines

Aspect	Conventional Fixed-Displacement Machine	IBM75 with PREFILL and Variable Displacement Pump
Energy consumption	Baseline reference	Minimum 35 percent lower
Hydraulic oil temperature drift	Rises through the shift, changes valve response	Stabilizes early, narrow operating band
Jar weight consistency over a shift	Requires periodic manual correction	Holds without intervention in normal conditions
Clamp approach speed	Limited by pump flow capacity	Fast approach via prefill valve, small pump
Cooling load on the chiller	High, includes hydraulic waste heat	Lower, less waste heat generated
Changeover time	Manual parameter entry, operator dependent	SD card recipe reload, repeatable
Process transfer between machines	Re-development required on each machine	Direct recipe copy across same-model machines
Relative operating cost level	High	Low to Medium

Material Selection for Large Wide Mouth Jars

The IBM75 processes the full Aibim material range: PE in HDPE, LDPE and LLDPE grades, PP, PS, ABS, SAN, TPU, PC and PCTG. For 500-1000ml wide mouth jars the practical shortlist narrows to HDPE and PP for opaque functional jars, PS and SAN for clear rigid jars, PC and PCTG for premium transparent or refillable formats, and TPU where a soft, flexible container is required. Each choice drives barrel temperature, drying practice, mold temperature and cycle time.

HDPE: The Default for Food and Supplement Jars

High density polyethylene is the workhorse for wide mouth food, supplement and household jars. It is inexpensive, tough at low temperature, offers a good moisture barrier and blows easily at low pressure. For injection blow molding, a blow molding or injection grade with melt flow index around 0.3 to 1.5 g per 10 min is typical: high enough to fill a thick preform, low enough to retain melt strength during inflation. HDPE requires no drying in normal conditions, which removes a whole utility from the shop floor. Its main limitations are opacity, moderate top load per unit weight, and shrinkage of roughly 1.5 to 3 percent that must be built into the tool.

PP: Clarity Options, Heat Resistance and Hinge Toughness

Polypropylene brings higher heat deflection temperature than HDPE, which matters for jars that will be hot filled, pasteurized or shipped through hot climates. Random copolymer and clarified grades give translucency to near clarity, opening the door to cosmetic and food applications where product visibility sells. PP shrinks more than HDPE, commonly 1.5 to 2.5 percent, and it is more sensitive to base cooling: cooled too aggressively at the base insert it shows stress whitening, cooled too little it deforms on ejection. PP also demands attention to the preform temperature window because its crystallization behavior narrows the usable blow range compared with HDPE.

PS and SAN: Rigid Clarity for Cosmetic Jars

General purpose polystyrene delivers glass-like clarity, high gloss and excellent dimensional stability at low cost, which is why it appears in cosmetic cream jars and clear display jars. It is brittle, so wall thickness and radius design must avoid stress concentrations, and it has poor resistance to oils, alcohols and many fragrance components. Styrene acrylonitrile copolymer solves much of that: adding acrylonitrile raises chemical resistance, heat resistance and toughness substantially while retaining clarity. For a 500ml cosmetic jar that will hold an oil-based cream, SAN is usually the correct answer where PS would craze. Both materials need proper drying and both benefit from higher mold temperature to avoid flow marks on the visible surface.

PC and PCTG: Premium Transparent and Refillable Jars

Polycarbonate offers outstanding impact strength, high heat resistance and full transparency, making it suitable for refillable jars, laboratory containers and premium cosmetic packaging that must survive repeated handling. It requires thorough drying, typically to below 0.02 percent moisture, because hydrolysis at melt temperature causes irreversible molecular weight loss and brittle parts. PCTG, a glycol-modified copolyester, provides similar clarity with better chemical resistance to many personal care formulations, easier processing at lower melt temperature, and good toughness without the drying sensitivity of PC being quite as severe, though drying is still mandatory. Both sit at the Premium end of the material cost scale and are chosen where brand presentation or reuse justifies it.

TPU and Specialty Grades

Thermoplastic polyurethane is unusual in a jar context but valuable for squeezable or flexible containers, soft-touch outer shells and specialty medical components. It processes at moderate temperature, requires careful drying, and needs generous gate and runner sizing because of its high melt viscosity. ABS occupies a middle ground, offering toughness and good surface finish for jars that will be decorated or metalized, though it lacks the clarity of SAN and the chemical resistance of PP.

Table 6. Material Comparison for 500-1000ml Wide Mouth Jars on the IBM75

Material	Melt Temperature Range	Mold Temperature	Drying Needed	Clarity	Chemical Resistance	Relative Resin Cost	Typical Jar Use
HDPE	180-230 C	10-25 C	No	Opaque	Excellent	Low	Food, supplement, household jars
PP	200-250 C	15-35 C	No	Translucent to clarified	Excellent	Low	Hot fill food, cosmetic, sauce jars
PS	190-240 C	30-50 C	Light	Excellent	Poor to oils and alcohols	Low to Medium	Clear display and dry product jars
SAN	210-260 C	40-60 C	Yes	Excellent	Good	Medium	Cosmetic cream jars with oil-based fills
ABS	210-250 C	40-70 C	Yes	Opaque	Moderate	Medium	Decorated and metalized jars
PC	280-310 C	80-100 C	Yes, critical	Excellent	Moderate	Premium	Refillable and laboratory jars
PCTG	230-260 C	15-30 C	Yes	Excellent	Good to very good	Premium	Premium cosmetic and personal care jars
TPU	190-220 C	20-40 C	Yes	Translucent	Good	High	Flexible and soft-touch containers

Processing windows in Table 6 are typical ranges that vary with grade, additive package and part geometry. Always confirm against the resin supplier data sheet, and validate through a trial run before committing a production specification. Where a jar will contact food, the resin, any color masterbatch and any additive must carry documentation appropriate to the destination market, including FDA compliance for the United States and EU 10/2011 documentation for Europe. For pharmaceutical primary packaging, additional qualification such as USP Class VI testing may apply, and the resin selection should be locked before tool steel is cut.

Color, Masterbatch and Regrind Practice

Wide mouth jars are usually colored, and color consistency across a large flat sidewall is visually unforgiving. Use a masterbatch carrier compatible with the base resin, dose gravimetrically rather than volumetrically, and validate color on the finished jar rather than on a plaque, because wall thickness variation changes perceived shade. Since injection blow molding produces no flash and no trim scrap, the regrind question is largely limited to start-up parts and rejects. Where regrind is used, keep the ratio modest, typically no more than 10 to 20 percent for non-critical opaque jars, and exclude it entirely from pharmaceutical and clear cosmetic production where property consistency and appearance govern.

Application Fields: Food, Cosmetic, الصيدلانيات and Drink Jars

Aibim serves four core application fields with its injection blow molding machines: pharmaceutics, food, drink and cosmetic. In the 500-1000ml wide mouth class each of these fields brings a different combination of regulatory requirement, appearance standard and mechanical duty, and the IBM75 configuration changes accordingly.

Food Jars

Food is the largest volume application for 500-1000ml wide mouth jars. Typical products include peanut butter and spread jars, honey jars, sauce and condiment jars, pickled vegetable containers, spice and seasoning jars, dry snack canisters, powdered beverage jars and infant nutrition containers. The dominant requirements are food contact compliance, a reliable closure seal, sufficient top load for stacking on pallets and in retail displays, and consistent fill volume so that a filling line running at high speed does not overflow or underfill.

Injection blow molding suits food jars for a specific reason beyond appearance: there is no pinch-off scar at the base and no trimmed neck edge. A pinch line is a potential stress concentration and a potential leak path, and a trimmed neck edge can carry burrs that interfere with induction seal application. Removing both improves seal integrity on exactly the products where a failed seal means a recall. HDPE and PP dominate here, with clarified PP where product visibility matters and PS or SAN for premium clear formats.

Cosmetic Jars

Cosmetic wide mouth jars in the 500ml range are used for body butters, hair masks, salon-size creams, bath salts, scrubs and professional treatment products. Requirements shift toward appearance and chemical compatibility: high gloss, no flow marks on the visible sidewall, precise thread fit for a heavy decorative closure, dimensional stability for hot stamping or labeling, and resistance to the oils, alcohols and fragrance components in the formulation. SAN, clarified PP, PCTG and PC are common. Wall thickness is usually specified higher than a food jar to give a substantial hand feel, and the sealing land must be flat enough to support a liner or wad without leakage.

Because the neck is injection molded to final dimension, decorative closures with fine multi-start threads or bayonet features fit consistently, and the tamper-evident bead engages without the variation that a trimmed neck introduces. This is why premium personal care brands frequently specify injection blow molded jars even when a lower-cost route exists.

الصيدلانيات

Pharmaceutical wide mouth containers in this size class include tablet and capsule bulk jars, effervescent tablet containers, powdered supplement jars, veterinary product containers and diagnostic reagent jars. The requirements are the strictest of any application: documented resin traceability, controlled production environment, closure and liner compatibility, moisture barrier performance, and dimensional consistency that will pass a validation protocol rather than a visual check.

Injection blow molding is the established route for pharmaceutical containers precisely because it produces no flash, requires no trimming and delivers injection-tolerance neck dimensions. HDPE is the most common resin for moisture-sensitive solid dose products; PP appears where higher heat resistance is required; PC and PCTG serve reusable and diagnostic applications. For these programs, machine features like SD card recipe storage stop being a convenience and become part of the process control evidence: the validated parameter set is stored, reproducible and transferable, which supports change control and periodic revalidation.

Drink and Beverage Jars

Drink applications in the wide mouth class cover powdered drink mix canisters, instant coffee jars, drinking chocolate containers, electrolyte and sports nutrition tubs, and syrup or concentrate jars. Wide openings matter here because the consumer scoops product out rather than pouring, so a 100 mm or 120 mm finish with a smooth internal shoulder is a functional requirement, not a styling choice. Moisture barrier is critical for hygroscopic powders, favoring HDPE and PP with a good induction seal. Top load matters because these jars ship in bulk cases and often sit on high-turn retail shelving.

Household, Industrial and Other Uses

Beyond the four core fields, the same jar formats serve detergent pods and powder containers, automotive additive jars, adhesive and grease containers, agricultural chemical jars and pet supplement tubs. The engineering questions are identical: opening ratio, wall uniformity, top load, chemical compatibility and closure integrity. The IBM75 handles all of them with a tool change and a stored recipe.

Table 7. Application Requirements Mapped to Machine and Material Configuration

Application Field	Typical Jar Products	Critical Requirement	Preferred Material	Compliance Reference
Food	Spread, honey, sauce, spice, snack jars	Seal integrity and stacking strength	HDPE, PP	FDA, EU 10/2011
Cosmetic	Body butter, hair mask, salon cream jars	Surface finish and chemical compatibility	SAN, PCTG, clarified PP	ISO 22716 good manufacturing practice
الصيدلانيات	Tablet jars, effervescent tubes, reagent jars	Dimensional validation and moisture barrier	HDPE, PP, PC	USP Class VI, ISO 15378 where applicable
Drink	Powdered drink, coffee, sports nutrition tubs	Wide scoop opening and moisture barrier	HDPE, PP	FDA, EU 10/2011
Household and industrial	Detergent, additive, adhesive, pet supplement jars	Chemical resistance and impact strength	HDPE, PP, ABS	Local packaging and labeling regulations

Companion Models: IBM65 and IBM55 Hybrid Electric

Few plants run only one jar size. Most converters serving food, cosmetic or pharmaceutical customers carry a portfolio that spans small bottles through large jars, and matching each format to the right machine size is what keeps unit cost competitive. Aibim therefore builds three models, and the IBM65 and IBM55 Hybrid Electric complement the IBM75 rather than competing with it.

IBM65: Mid-Range Capacity for 100-500ml Containers

The IBM65 is the natural partner to a large jar line. It handles the mid-range where cavity counts can rise and cycles shorten, which is exactly where a large machine would be inefficient. Running a 250ml jar on a machine sized for 1000ml wastes clamp capacity, oversizes the shot for the part and leaves the plasticizing unit working at too small a stroke fraction. The IBM65 fixes that mismatch.

Table 8. IBM65 Injection Blow Molding Machine Specification

Parameter	Unit	IBM65 Typical Value
Container volume range	ml	20-500
Clamping force	kN	650
Screw diameter	mm	45 (40 / 50 optional)
Screw L/D ratio	–	22:1
Theoretical shot volume	cm3	320
Shot weight (PS reference)	g	290
Plasticizing capacity	kg/h	62
Mold setting space (W x H)	mm	620 x 540
Maximum container diameter	mm	95
Typical cavities, 250 ml jar	–	6
Typical cavities, 500 ml jar	–	3-4
Dry cycle time	s	4.0
Total installed power	kW	48
Machine weight	t	9.5
Safety certification	–	CE

The IBM65 shares the IBM75 architecture: three-station one-step operation, PREFILL hydraulics with variable displacement pump control, SD card parameter storage, single-crossbeam double-pole clamping and CE certified safety systems. That commonality is deliberate. An operator trained on one machine is competent on the other, spare parts overlap substantially, and process knowledge transfers directly. For a plant running an IBM75 on 1000ml tubs and an IBM65 on 250ml jars, maintenance planning and training stay simple.

IBM55 Hybrid Electric: Precision and Energy Efficiency for Small Containers

The IBM55 Hybrid Electric targets the small container end, where cycles are short, cavity counts are high and the energy cost per container is dominated by the number of machine movements rather than by melt heating. Combining servo electric drive on the movements that benefit most from precision and speed with hydraulic power where high force is genuinely needed, the hybrid layout delivers repeatability and low energy consumption together.

Table 9. IBM55 Hybrid Electric Injection Blow Molding Machine Specification

Parameter	Unit	IBM55 Hybrid Electric Typical Value
Container volume range	ml	3-250
Clamping force	kN	550
Drive concept	–	Servo electric plus hydraulic hybrid
Screw diameter	mm	38 (35 / 42 optional)
Theoretical shot volume	cm3	180
Shot weight (PS reference)	g	165
Typical cavities, 30 ml bottle	–	10-12
Typical cavities, 200 ml jar	–	6
Dry cycle time	s	3.6
Total installed power	kW	36
Typical running consumption	kW	16-20
Relative energy cost per container	–	Low
Safety certification	–	CE

The IBM55 Hybrid Electric is not a wide mouth jar machine, and it is listed here for portfolio completeness rather than as an alternative for the 500-1000ml range. Its value in a jar-focused plant is covering the small pharmaceutical bottles, sample jars and travel-size cosmetic containers that customers request alongside their main jar program, without tying up the IBM75.

Selection Guide: Matching Jar Size and Material to the Right Model

Choosing the right injection blow molding machine comes down to four inputs: maximum container volume, maximum container diameter, required output per hour and resin family. Work through those in order and the machine choice usually resolves itself. The table below maps common requirements directly to the Aibim lineup.

Table 10. Requirement to Model Selection Guide

Container Requirement	Typical Material	Recommended Model	Suggested Cavities	Indicative Output per Hour	Relative Investment Level
1000 ml wide mouth supplement tub	HDPE	IBM75	3	Approximately 490	High
1000 ml tall sauce jar	PP	IBM75	2	Approximately 343	High
1000 ml clear display jar	PS or SAN	IBM75	2	Approximately 360	High
750 ml powder or supplement jar	HDPE or PP	IBM75	3	Approximately 554	High
500 ml wide mouth food jar, high volume	HDPE	IBM75	4	Approximately 960	High
500 ml premium cosmetic jar	SAN or PCTG	IBM75	3	Approximately 584	High
500 ml jar, moderate volume mixed portfolio	HDPE or PP	IBM65	3-4	Approximately 620-780	Medium
250 ml cream or food jar	PP, PS or SAN	IBM65	6	Approximately 1,600	Medium
200 ml sample or travel jar	PP or SAN	IBM55 Hybrid Electric	6	Approximately 1,900	Medium
3-50 ml pharmaceutical vial or dropper bottle	HDPE, PP or PC	IBM55 Hybrid Electric	10-12	Approximately 3,600-4,300	Medium

Four Questions to Answer Before Requesting a Quotation

1. What is the largest container in the program, by volume and by outside diameter? Machine choice is set by the largest and widest jar, not by the average. A 1000ml jar at 125 mm diameter is the deciding case even if it is only 20 percent of volume.
2. What annual output do you need, and over how many shifts? Convert annual requirement to jars per hour at your realistic operating time. A plant running two shifts at 85 percent utilization has roughly 4,000 productive hours per year; divide the annual target by that figure to get the required hourly rate, then read cavity count from Table 4.
3. Which resins will you run, and do any require drying or high-temperature processing? PC, PCTG, SAN, ABS and TPU all need drying equipment and, in the case of PC, a barrel and screw configured for high melt temperature. That decision changes the auxiliary equipment package, not just the machine.
4. What compliance evidence does the end customer require? Food contact, pharmaceutical or cosmetic documentation obligations affect resin choice, cleanliness of the production area, and whether stored process recipes need to be part of the validation package.

Energy, Scrap and Total Cost of Ownership

Machine purchase price is a one-time number; energy, scrap, labor and maintenance repeat every single day for a decade or more. For a 500-1000ml jar program, the cost structure is dominated by resin, and the second largest controllable factor is usually energy. Understanding where each unit of cost goes makes it clear why machine architecture matters more than headline price.

Resin Cost Dominates, So Weight Control Pays First

In a typical wide mouth jar program, resin represents the majority of total conversion cost. That makes weight consistency the highest-value control point in the entire plant. If a 58 g jar is running at 60 g because the process drifts and the operator compensates with extra material to avoid short shots, the plant is paying roughly 3.4 percent more resin for every jar produced, permanently. Injection blow molding removes the parison drift that causes this in extrusion blow molding, and the IBM75 hydraulic and thermal stability removes most of what remains. Combined with the absence of flash and trim scrap, this is the single strongest economic argument for the process on large jars.

Energy: Where the 35 Percent Comes From

The minimum 35 percent energy saving Aibim specifies is not a single trick. It is the sum of several effects: the variable displacement pump supplies only the flow required rather than dumping surplus across a relief valve; PREFILL reduces the pump work needed for the large clamp movements; less waste heat means the chiller works less; and the absence of a reheat stage, inherent to the one-step process, eliminates an entire energy consumer that a two-step route would require. On a machine drawing 32 to 38 kW in production instead of a comparable conventional machine’s substantially higher figure, running two shifts a day across a year, the cumulative difference is a meaningful line item in the operating budget.

Table 11. Relative Cost Structure of a 500-1000ml Wide Mouth Jar Program

Cost Element	Relative Weight in Total Conversion Cost	Main Lever	IBM75 Contribution
Resin	Very High	Part weight consistency and zero flash	Metered shot, no trim scrap, stable weight
Energy	Medium	Hydraulic efficiency and no reheat stage	Minimum 35 percent saving by design
Labor	Medium	Automation and changeover simplicity	SD card recipes, automatic stripping and discharge
Tooling amortization	Medium to High	Cavity count and tool life	Rigid frame protects tool from flash wear
Maintenance and spares	Low to Medium	Component quality and access	Open two-pole layout plus USD 500 free parts per year
Scrap and rework	Low	Process stability	No flash, no trim, laser-verified part removal
Utilities other than power	Low	Chiller and compressor sizing	Lower hydraulic waste heat reduces chiller duty

Uptime Is the Hidden Cost Line

An hour of unplanned downtime on a machine producing 490 jars per hour is 490 jars that must be recovered later, often at overtime rates, and a delivery promise put at risk. This is why the stability features described earlier deserve weight in a purchasing decision that is often made on price alone. A machine that holds parameters, resists thermal drift, protects its own tooling with a laser part-removal check and can restore a validated recipe in minutes produces more sellable jars per year than a nominally similar machine without those features, even when both are rated for the same output.

Mold Design, Trial Runs and Commissioning for Jar Programs

On an injection blow molding line, the machine sets the envelope but the mold sets the product. Aibim develops both, which removes the most common source of project delay: the interface between a machine supplier and an unrelated mold maker. The factory has developed injection blow molding machine and mold series together over more than a decade, and its own CNC center produces machine components and tooling elements to a common standard.

The Three Tool Sets in One Mold

A three-station injection blow mold is really three coordinated tool sets on a shared core rod system: the preform cavity set at the injection station, the blow cavity set at the blow station, and the stripper arrangement at the third station. The core rods pass through all three, so rod design is the central engineering task. Rod diameter and taper define the preform wall profile and therefore the finished jar wall distribution. Rod internal cooling defines how fast the neck stabilizes and how much of the cycle is spent waiting. Rod surface finish and hardness define how easily the jar releases and how long the tool lasts. For wide mouth jars the rod is large in diameter, which is helpful for cooling channel space but demanding on alignment tolerance.

Cooling Circuit Strategy for Large Jars

Split the mold into at least three independently controlled circuits. The neck and sealing land circuit runs coldest because closure fit depends on neck stability and because the neck must be rigid before stripping. The main body cavity circuit balances cycle time against surface finish, running warmer for clear resins to avoid flow marks and cooler for opaque HDPE where cycle speed governs. The base insert circuit is tuned last, usually slightly warmer for PP to avoid stress whitening and colder for HDPE to prevent base deformation during discharge. Conformal or high-density drilled circuits in the core rod repay their cost quickly on a 1000ml jar because the rod removes heat from the inside where the wall is thickest.

Gate, Runner and Balance

Preform gating on a multi-cavity jar tool must be balanced within a narrow tolerance or cavity-to-cavity weight variation will appear directly in finished jar weight. A hot runner with individually controlled nozzle zones allows fine trimming of fill balance without recutting steel, which is why it is standard on larger cavity counts. Gate size follows resin viscosity: generous for TPU and PC, moderate for HDPE and PP, careful for PS and SAN where an oversized gate leaves a visible vestige on a clear jar base.

Trial, Validation and Pre-Shipment Testing

Aibim runs machines with the customer tool before shipment. That single practice removes most of the risk from an international equipment purchase. A structured trial sequence looks like this:

1. Dry cycle verification: confirm index accuracy, clamp timing, stripper function and all safety interlocks including the laser part-removal sensor and light curtain, with no material in the barrel.
2. First-shot preform study: mold preforms only, weigh every cavity, and confirm cavity-to-cavity balance before any blowing takes place.
3. Blow window mapping: vary preform temperature in small increments to find the upper and lower limits of acceptable jar quality, then set the process at the center of that window rather than at its edge.
4. Wall thickness mapping: section jars from each cavity and measure wall at defined points around the shoulder, sidewall and base; adjust barrel profile first, core rod contour only if necessary.
5. Dimensional and functional checks: neck gauge, thread fit with the actual production closure, top load, drop test, and leak or seal test according to the end-use requirement.
6. Continuous run: run the machine continuously long enough to prove thermal and hydraulic stability, weighing jars at intervals to confirm the weight curve stays flat.
7. Recipe capture: store the validated parameter set to the SD card and archive it as the reference process for that product.

Installation and Start-Up at the Customer Plant

Site preparation should be complete before the machine arrives: a floor able to carry a 12 tonne machine, correct voltage and phase supply matched to the specified configuration, chilled water at the required flow and temperature, compressed air at 0.8 MPa with adequate volume and proper drying, and clear access for a forklift or crane. Aibim engineers handle installation and commissioning on site, run the tool, verify output against the agreed figures, and train operators and maintenance staff. Because the validated recipe travels on the SD card from the pre-shipment trial, the start-up process becomes a confirmation exercise rather than a fresh process development, which is typically the difference between production in days and production in weeks.

Service, Spare Parts and the Wanplas Guarantee Framework

Equipment support determines whether a machine is an asset or a liability in year three. Aibim operates within the Wanplas group service framework, which standardizes the commitments across all Wanplas factories, and adds its own manufacturing-based capabilities on top.

What Is Included

• Pre-shipment testing with the customer mold. Every machine is run with the actual tool and the actual resin before it leaves the factory, and the resulting parameter set ships with the machine.
• Installation and commissioning on site. Aibim engineers travel to the customer plant, install the machine, mount and start the tool, verify output and hand over a running process.
• Operator and maintenance training. Training covers daily operation, recipe management via SD card, routine maintenance intervals, mold changeover procedure and first-level troubleshooting.
• USD 500 free parts per year. Under the Wanplas group policy, each customer receives USD 500 in free spare parts every year, which covers the ordinary wear items that keep a line running.
• Warranty replacement. Parts that fail within the warranty period are replaced free of charge.
• Remote technical support. Engineers support process and fault questions remotely, working from stored parameter sets and machine data rather than guesswork.
• Open factory policy. Aibim welcomes customer visits for pre-purchase inspection, machine acceptance testing and process trials. Seeing your own jar produced on the machine before it ships is the most effective form of quality assurance available.
• Mold and machine from one source. Because Aibim develops both, responsibility for the finished jar is not divided between two suppliers.

Maintenance Practice That Protects Output

Stable output requires stable maintenance. A practical schedule for an IBM75 running two shifts includes daily checks of hydraulic oil level and temperature, cooling water flow and temperature, compressed air pressure and dryer function, and safety interlock operation. Weekly work covers core rod cleaning and inspection for surface damage, mold parting face cleaning, filter checks and a review of the weight log for any developing trend. Monthly work includes hydraulic filter service, oil condition testing, cooling circuit descaling where water quality demands it, and calibration checks on temperature sensors. Annual work covers oil replacement per condition analysis, a full mold service including rod replacement where wear is measurable, and a comprehensive inspection of the clamping frame and index mechanism.

Spare Parts to Hold On Site

Holding the right small inventory prevents the majority of long stoppages. A sensible baseline for a jar line includes spare heater bands and thermocouples for every zone type, one complete set of seals for the main hydraulic actuators, hydraulic and air filter elements, at least one spare core rod per cavity position for the running tool, blow air valve service parts, and the wear items specific to the stripper mechanism. The annual USD 500 free parts allowance from the Wanplas group policy is designed to be applied against exactly this kind of consumable stock.

الأسئلة الشائعة

What makes a jar a wide mouth jar in injection blow molding?

A wide mouth jar is generally defined by an opening-to-body-diameter ratio above roughly 0.6, or a neck inner diameter of 40 mm and above. In the 500-1000ml class that typically means finishes from 63 mm to 120 mm. Injection blow molding is particularly well suited to this geometry because the neck is injection molded to final dimensions on the core rod in the first station and is never trimmed, calibrated or reheated afterward, so thread profile, sealing land and tamper bead reproduce to injection tolerance on every shot.

How many jars per hour can the IBM75 produce at 500ml and 1000ml?

With a four-cavity tool, a 500ml HDPE wide mouth jar weighing about 32 g typically runs a 15 second cycle, giving roughly 960 jars per hour, or about 23,000 jars in 24 hours. A 1000ml HDPE tub weighing about 58 g on a three-cavity tool typically runs a 22 second cycle, giving roughly 490 jars per hour. These figures assume well-designed cooling circuits, chilled water at 8 to 12 degrees Celsius and continuous operation; resin grade, wall specification and ambient conditions all shift the result.

Why choose injection blow molding over extrusion blow molding for a 1000ml jar?

Three reasons dominate. First, there is no flash, no pinch-off scar and no neck trimming, which removes the trim scrap loop that typically runs 10 to 30 percent in extrusion blow molding and eliminates deflashing labor. Second, neck dimensions hold injection tolerance, which matters when the closure must seal reliably on a wide opening. Third, jar weight is controlled by a metered shot rather than by an extruded parison, so weight stays consistent without operator intervention. The trade-off is that integral handles are not possible and tooling investment is higher, so extrusion blow molding remains the better route for handleware and very large containers.

Which materials can the IBM75 process for large wide mouth jars?

The IBM75 processes PE in HDPE, LDPE and LLDPE grades, plus PP, PS, ABS, SAN, TPU, PC and PCTG. HDPE and PP cover most food, supplement and household jars. PS and SAN serve clear rigid cosmetic jars, with SAN preferred where the formulation contains oils or alcohols that would craze PS. PC and PCTG cover premium transparent and refillable formats. TPU is available for flexible or soft-touch containers. Resins requiring drying, including SAN, ABS, PC, PCTG and TPU, need a dehumidifying dryer in the auxiliary package.

How does the IBM75 keep output stable across a long production run?

Stability is designed in at four levels. The hydraulic system uses a variable displacement pump with PREFILL technology, so surplus flow and its waste heat largely disappear and oil temperature stabilizes early instead of drifting through the shift. Closed-loop temperature control runs on every barrel, hot runner and mold zone independently. The single-crossbeam double-pole clamping frame keeps platen deflection low and even across wide multi-cavity tools. And SD card parameter storage means the validated recipe is reloaded exactly rather than re-entered by hand.

Can a validated process be transferred from one IBM75 to another?

Yes. Complete parameter sets, including temperature profiles, injection and holding profiles, blow timing, index and stripper settings, are stored on an SD card and can be reinstalled on another machine of the same model. For plants running duplicate lines or expanding capacity, this means the second machine produces to the same specification from the first production run instead of requiring a separate process development. It also supports change control requirements in regulated pharmaceutical and food production, because the process is a stored, versioned artifact rather than a set of values in an operator’s notebook.

What utilities and site preparation does an IBM75 installation require?

Plan for a floor capable of supporting approximately 12 tonnes with the machine footprint of about 6.2 by 2.4 metres plus service clearance on all sides, an electrical supply matched to the specified voltage and phase with capacity above the 63 kW installed rating, chilled water at roughly 90 to 130 litres per minute split between the mold circuit and the hydraulic oil cooler, and compressed dry air at 0.8 MPa delivering around 1.2 cubic metres per minute with a compressor sized about 30 percent above that figure. A dehumidifying dryer is required if the program includes SAN, ABS, PC, PCTG or TPU.

What after-sales support and warranty does Aibim provide?

Aibim provides pre-shipment testing with the customer mold, on-site installation and commissioning by its own engineers, operator and maintenance training, remote technical support, warranty replacement of parts that fail within the warranty period, and USD 500 free parts per year under the Wanplas group service policy. The factory also maintains an open factory policy, so customers are welcome to visit for machine inspection, acceptance testing and trial runs before shipment.

Does Aibim supply the jar mold as well as the machine?

Yes. Aibim has developed its injection blow molding machine and mold series together, and operates its own CNC machining center for machine components and tooling elements. Supplying both from one source means the core rod system, preform cavity, blow cavity and stripper arrangement are designed against the actual machine geometry, and it means one party is accountable for the finished jar rather than two suppliers pointing at each other when a wall thickness target is missed.

How long does it take to change over from one jar size to another?

Changeover consists of a mold change and a process reload. The mold change dominates the clock and depends on tool weight, crane availability and how well the water and air connections are organized; the two-pole open-sided frame of the IBM75 was chosen partly to make this faster. The process side is quick, because the stored SD card recipe for the incoming product is loaded rather than re-entered. Plants that standardize quick-connect water manifolds and keep validated recipes properly labeled routinely cut total changeover time substantially compared with manual parameter entry.

Conclusion: Building a Reliable 500-1000ml Wide Mouth Jar Line

Large wide mouth jars reward the manufacturer who gets three things right: a process that molds the neck once and never touches it again, a machine sized with real margin for shot volume, clamping force and mold space, and a control and hydraulic architecture that holds the process steady from the first jar of the shift to the last. The three-station one-step injection blow molding route delivers the first. The IBM75, with 750 kN clamping force, 570 cubic centimetres of theoretical shot volume, 750 by 620 mm of mold setting space and container capability to 1000ml at 125 mm diameter, delivers the second. PREFILL hydraulics with variable displacement pump control, closed-loop thermal management on every zone, a rigid single-crossbeam double-pole frame and SD card recipe portability deliver the third, alongside a minimum 35 percent energy saving compared with conventional hydraulic machines.

Around that core machine sits a complete lineup: the IBM65 for the 20-500ml mid-range where higher cavity counts pay, and the IBM55 Hybrid Electric for small pharmaceutical and cosmetic containers down to 3ml. All three share the same three-station architecture, the same CE certified safety systems, the same PREFILL hydraulic concept and the same SD card recipe management, so operators, spare parts and process knowledge transfer directly across the plant. Materials from HDPE and PP through PS, SAN, ABS, TPU, PC and PCTG are all within scope, covering food, drink, cosmetic and pharmaceutical jar programs.

Aibim, a Wanplas factory, brings 12 years of injection blow molding manufacturing experience, installations in more than 40 countries, over 100 lines produced per year, an in-house CNC machining center and a factory expanded in 2022 to support machine and mold development under one roof. The Wanplas group service framework adds pre-shipment testing with your tool, on-site installation and commissioning, training, warranty replacement, USD 500 free parts per year and an open factory policy for audits and trials.

If you are planning a 500-1000ml wide mouth jar program, the most useful next step is to send your jar drawing or a physical sample together with your target output per hour, your resin choice and your closure specification. The Aibim engineering team will calculate the achievable cavity count, estimate the realistic cycle and hourly output for your geometry, and return a tailored IBM75 configuration with the matching mold proposal. You are also welcome to visit the factory, watch your own jar run on the machine, and take the sample home before committing to the order.