Valve port pocket valve port forming mechanism

By designing a valve pocket valve port forming mechanism and utilizing reverse folding fixing and multiple sealing processes, the problem of insufficient sealing after valve pocket forming was solved, achieving higher connection strength and leakage prevention effect.

CN122353993APending Publication Date: 2026-07-10WENZHOU TIANYE PLASTIC MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WENZHOU TIANYE PLASTIC MASCH CO LTD
Filing Date
2026-05-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing valve port forming process and mechanism of valve bags have shortcomings in terms of sealing and long-term reliability. They are prone to forming gaps or weak areas at the joint, which can lead to material leakage.

Method used

A valve pocket valve opening forming mechanism is designed. The valve opening substrate is folded back and fixed onto a triangular pocket-shaped structure by a folding and fixing component. The side gaps of the folded structure are sealed by a sealing component and the folded area is sealed by a second sealing component. The process includes processes such as glue spraying, ultrasonic welding and hot air blowing.

Benefits of technology

This improves the connection strength and sealing performance of the valve bag, reduces the risk of leakage during use, and enhances the quality of the valve bag.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of valve bag processing technology, and provides a valve bag valve opening forming mechanism, including a bag body conveying line. Upstream of the bag body conveying line, a bag body is conveyed. A feeding and cutting assembly is located on one side of the bag body conveying line. The cut valve opening substrate is folded back by a folding and fixing assembly to form a folded structure, and its bottom surface is fixed to a triangular pocket-shaped structure. The gap on the side of the folded structure is sealed and connected by a sealing assembly. Downstream of the bag body conveying line, a folding assembly is located. The folding assembly folds the side of the triangular pocket-shaped structure in half to form an overlapping area, which is sealed and connected by a second sealing assembly. By sealing and fixing the gap on the side of the folded structure with the first sealing assembly, and by sealing and fixing the overlapping area formed by the folding assembly, the formed valve opening has a multi-layered leak-proof structure, improving the quality of the valve bag product and effectively reducing leakage during use.
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