Soft bag bagmaking method and product thereof

Abstract

The invention discloses a soft bag bagmaking method and a product thereof. The soft bag bagmaking method includes: performing pre-stretching on a film material; performing heat seal welding on the periphery of the film material after the pre-stretching and a connection portion of the film material and an oral tube. The invention further discloses a product obtained through the soft bag bagmaking method. The soft bag bagmaking method reduces damage or liquid leakage risk of a bag body of the product by performing the pre-stretching and one-time welding shaping, replacing partial stretching withoverall stretching, and replacing repeated welding with one-time welding.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a soft bag making method. It also relates to a product made by a soft bag making method. Background technique [0002] Soft bags, also known as non-PVC film infusion soft bags, are often used in medical equipment and other fields. [0003] At present, the bag forming process of soft bags on the market generally adopts two or three heat sealing methods, mainly including peripheral heat sealing and mouth tube heat sealing. Before the peripheral heat sealing, the mouth tube has been inserted into the middle of the membranes on both sides. Two heated molds press the membrane material inserted with the mouth tube for welding. At the same time, the two layers of membrane materials can be tightly attached to the mouth tube. Press on the mouth tube; two pieces of mouth tube heat-sealing molds weld the membrane material that has been attached to the mouth tube, and weld the me...

AI Technical Summary

Problems solved by technology

Welding three times, there are places where there are cross welds, which makes the appearance of the soft bag unsightly, and the welds are easy to be damaged, resulting in liquid leakage

[0004] In addition, in the three times of welding, the membrane material will be stretched to a certain extent. According to the conventional three times welding method, the stretching of the membrane material is only stretched within the width of the mouth tube, so that the stretching of the membrane material The rate will be very large, and it is very easy to break or leak after welding

[0005] Therefore, how to provide a soft bag making method that solves the problems of repeated welding of soft bags, excessive stretching of film materials, bag damage or increased risk of liquid leakage caused by repeated welding is an urgent need for those skilled in the art. technical issues to be resolved

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