Injection-blowing integrated manufacturing method for plastic infusion container

Abstract

The invention discloses an injection-blowing integrated manufacturing method for a plastic infusion container, and belongs to the technical field of infusion container manufacturing. The injection-blowing integrated manufacturing method comprises the following steps that S100, polypropylene particles are fed into an injection molding material barrel, shearing force and extrusion force are appliedto the polypropylene particles, the polypropylene particles are heated, and the polypropylene particles are in a molten fluid state under the combined action of shearing, extrusion and heating; S200,the molten-fluid-shaped polypropylene is extruded into an injection mold through a screw, the molten-fluid-shaped polypropylene passes through a main runner and a sub-runner in sequence, and cooled and molded into blanks between a mold core and a mold cavity of the sub-runner under the extrusion force of the screw; S300, the cooled and molded blanks are taken out, and gradient temperature coolingtreatment is carried out on the blanks to a preset temperature; and S400, the blanks cooled to the preset temperature are placed into follow fixtures of a bottle blowing mechanism in a one-to-one correspondence mode, corresponding temperatures are applied to different parts of the blanks for heating, and the different parts of the blanks have a stretch blow molding conditions.

Description

technical field [0001] The invention relates to the technical field of infusion container manufacturing, and more specifically relates to an injection-blowing integrated manufacturing method of a plastic infusion container. 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 soft and plasticized, it solves the problem that the glass bottle container cannot be completely sealed for infusion, especially with the launch of the new type of infusion packaging of Sichuan Kelun Pharmaceutical Co., Ltd. - the vertical polypropylene infusion bag (referred to as "standing bag") , to solve the secondary pollution generated in the infusion process and meet the special conditions of use such as airdrops. The industrialization of this product that combines the advantages of the traditional four ty...

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