Injection-blowing integrated manufacturing method for a plastic infusion container

Abstract

The invention discloses an injection-blowing integrated manufacturing method of a plastic infusion container, belonging to the technical field of infusion container manufacturing. The manufacturing method includes the following steps: S100: feeding the polypropylene material into the plastic injection cylinder, applying shear force and extrusion force to the polypropylene material, and heating the polypropylene material, and the polypropylene material is sheared Cutting, extruding, and heating under the combined action of molten fluid; S200: Polypropylene in molten fluid form enters the injection mold through screw extrusion, and passes through the main channel and runner in turn, and the polypropylene in molten fluid form is extruded by the screw. Under pressure, it is cooled to the embryo body between the core and the cavity of the runner; S300: after the cooled molded body is taken out, it is cooled to the preset temperature by gradient temperature; S400: it is cooled to The pre-set temperature embryos are placed in the accompanying fixture of the blowing mechanism one by one, and the corresponding temperature is applied to different parts of the embryo for heating, so that different parts of the embryo have the conditions for stretch blow molding.

Description

technical field [0001] The invention relates to the technical field of manufacture of infusion containers, and more particularly to a method for integrally manufacturing plastic infusion containers with injection and blowing. Background technique [0002] Infusion is the most widely used and most important treatment method in clinical practice, and its safety is closely related to the packaging form, material and manufacturing process. After the infusion container is softened and plasticized, it solves the problem that the glass bottle container cannot be completely sealed for infusion, especially with the launch of Sichuan Kelun Pharmaceutical's new infusion packaging - vertical polypropylene infusion bag (referred to as "stand-up bag"). , to solve the secondary pollution generated during the infusion process and to meet the special conditions of use such as airdrops. The industrialization of this product, which combines the advantages of the four traditional infusion pack...

AI Technical Summary

Problems solved by technology

The disadvantage is that the light transmittance is only two-thirds of that of the two-step method, and the production efficiency has been greatly improved compared with BFS, but it is still lower than that of the two-step method.

[0006] The advantages of the container produced by the two-step method (injection molding - bottle blowing) are: high transparency, which can generally reach more than 95%, can realize fully sealed infusion and can realize complete self-draining, and the production efficiency and material utilization rate are higher than those of ASB and BFS. High; the disadvantage is that the infusion container is manufactured separately on two equipments, and there is a risk of contamination when the embryos collide with each other during the transfer process of the injection molded embryos