The present invention discloses a preparation method of an infusion container, comprising the steps of: adding raw materials of the infusion container into an injection blow molding machine, heating and melting the raw materials, injecting the molten materials into a preform mold in the injection blow molding machine, and cooling and shaping to form a plastic tubular preform with a hanging ring at the bottom; drawing out the core rod of the preform mold, transferring the plastic tubular preform to a preheating mold in the injection blow molding machine, preheating the plastic tubular preform by an electric heating wire in the preheating mold, and pre-blowing the preheated preform for preliminary forming; moving the pre-blown plastic preform to a blow molding mold in the injection blow molding machine for biaxial stretch forming, and heating the plastic preform by an electric heating wire in the preheating blow molding mold during stretch forming; cooling the formed infusion container and transferring it to a demolding station in the injection blow molding machine for demolding. The preparation method of the present invention realizes integral forming of the hanging ring and the container, with high preparation efficiency, low preparation cost, simple and fast preparation process, meeting the clean environment requirements for pharmaceutical infusion container production, and a more environmentally friendly preparation mode; the prepared product has stable quality.

Country Code: CN

Application Number: CN201811447784.7