Preparation process of vertical polypropylene infusion bag capable of avoiding shrinkage and cracking

Abstract

The invention relates to the technical field of medical supplies, and discloses a preparation process of a vertical polypropylene infusion bag capable of avoiding shrinkage and cracking, which comprises the following preparation steps of: (1) preparing a polypropylene raw material; (2) preparing a bag blank; and (3) preparing an infusion bag. According to the preparation process of the vertical polypropylene infusion bag capable of avoiding injection molding shrinkage and cracking, infusion bag preparation raw materials are compounded and prepared again, long carbon fibers and alkali-free glass fibers are added, the raw materials are fused more smoothly through a compatilizer and a coupling agent, the overall strength of the raw materials is enhanced, the toughness is improved, the shrinkage probability is reduced, the error-tolerant rate is high, and the yield is increased; and the raw materials are heated to 180-220 DEG C in an injection molding machine, so that the raw materials aremelted, moisture in the raw materials is evaporated, it is guaranteed that the raw materials cannot be uneven in thickness during forming in the mold through repeated short-time pressure maintaining,it is guaranteed that the raw materials cannot crack due to sudden temperature change by checking the temperature of the mold, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to the technical field of medical supplies, in particular to a preparation process for an upright polypropylene transfusion bag that avoids shrinkage and cracking. Background technique [0002] Infusion or large-volume injection refers to a large-dose injection that is infused into the body by intravenous infusion, with a dose of more than 100ml at a time. It is a branch of injection, usually packaged in glass or plastic infusion bottles or bags, and does not contain Bacteriostatic agents, when in use, adjust the drip rate through the infusion set, and continuously and stably infuse the drug into the body. The plastic bag infusion method is a kind of intravenous infusion, which requires treatment trays, disposable sterile catheters and infusion needles, adhesive plasters, medicines, etc. liquid, tourniquet, net or infusion basket, infusion stand, hemostatic forceps, cotton swabs, curved discs, splints and bandages, etc. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an upright polypropylene infusion bag preparation process that avoids shrinkage and cracking, which has the advantages of reducing the shrinkage during injection molding and cracking during cooling, and improving the yield, and solves the existing problems. During the preparation process of the infusion bag preparation process, due to the lack of attention to raw materials and temperature control, the yield of finished products is low. Most of the infusion bags shrink during injection molding or crack during cooling, resulting in a high scrap rate.