Pressing process of bag

Abstract

The invention relates to a pressing process of a bag. The pressing process comprises the following steps of (1) welding an outer bag body so as to form a frame structure; (2) welding an inner bag body so as to form another frame structure, and welding the bottom of the bag to the lower end of the inner bag body; (3) connecting insulating layers into another frame structure; (4) welding an inner layer of the frame structure to the inner side surface of the outer bag body; (5) putting the insulating layers between the inner layer and the outer bag body, so that the side insulating layer is clamped between the inner bag body and the outer bag body, and the bottom insulating layer is abutted with the inner bottom; and (6) welding the outer bottom to the lower end of the outer bag body. According to the pressing process, in the production process of the bag, the inner layer and the outer bag body of the bag are respectively welded into the frame structures first, and then the inner layer is welded on the outer bag body, so that the connection between the inner layer and the outer bag body is simplified, the production complexity of the bag is reduced, and the productivity of the bag is increased.

Description

technical field [0001] The invention relates to the field of bag processing, in particular to a bag pressing process. Background technique [0002] Bags have been widely used in people's daily life, and they can hold various articles. According to the difference of articles held, bags can be divided into various types and styles. The bag with heat preservation function is just one of many bags. The bag with heat preservation function is generally used to hold various foods and keep the temperature and freshness of the food. It can also be used for refrigeration. Putting ice cubes, cold drinks and other low-temperature items, it has the function of heat preservation and cold preservation. [0003] In order to strengthen the thermal insulation effect of the bag, the current thermal insulation bag is connected by welding. In the prior art In the prior art, the processing method of the thermal insulation bag manufactured in a seamless welding manner is as follows: [0004] Me...

AI Technical Summary

Problems solved by technology

[0005] When using the above method for bag production, the inner layer and the outer layer are connected by wires and then welded to form a frame structure. When the inner bag body and the outer bag body are connected into a frame body, the operation is more complicated and the production efficiency is low.

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