Soft bag manufacturing, filling and sealing machine and film material pre-stretching device thereof

Abstract

The invention discloses a film material pre-stretching device comprising an upper die, a lower die and a drive portion. The upper die and the lower die are arranged on the two sides in the vertical direction of a film material. The drive portion is connected with the upper die and / or the lower die and used for driving the upper die and / or the lower die to vertically move. The invention further discloses a soft bag manufacturing, filling and sealing machine. The film material pre-stretching device conducts overall pre-stretching on the film material and replaces local stretching by overall stretching, and therefore the risk of bag damage or liquid leakage is lowered.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a film material pre-stretching device. It also relates to a soft bag bag making and filling machine. Background technique [0002] In the bag-making process of non-PVC film infusion soft bags commonly used in medical equipment and other fields, the welding and fixing method of multiple heat sealing is generally used. [0003] 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 membrane material and the mouth tube together; in order to reduce the occurrence of liquid leakage, ...

AI Technical Summary

Problems solved by technology

[0004] 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 the stretching rate of the membrane material will be very large. , it is very easy to break or leak after welding

[0005] Therefore, how to provide a film material pre-stretching device that solves the problem of increased risk of bag damage or liquid leakage due to excessive partial stretching of the film material is a technical problem that those skilled in the art need to solve urgently.

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