Packaging bag
By using corona discharge treatment to create a modified area in the sealing part of the packaging bag, the sealing strength is reduced to form a vapor release sealing part. By installing nozzles on the packaging bag, the problems of difficult vapor release and liquid contents overflow during microwave heating are solved, realizing effective vapor release and convenient liquid pouring.
CN115427312BActive Publication Date: 2026-07-21KYORAKU CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- KYORAKU CO LTD
- Filing Date
- 2021-05-25
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Existing packaging bags are difficult to seal during the bag-making and filling process, and the liquid contents are prone to overflow after opening. Furthermore, the steam is difficult to release effectively when heated by microwave.
Method used
A modified zone is formed in the sealing part of the packaging bag by corona discharge treatment, which reduces the sealing strength to form a vapor release sealing part, and a nozzle is installed on the packaging bag to facilitate the pouring out of liquid contents and prevent spillage.
Benefits of technology
It achieves effective steam release during microwave heating, preventing damage to the packaging bag, and allows liquid contents to be easily poured out, solving the spillage problem.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115427312B_ABST
Abstract
Provided is a packaging bag that can easily form a steam release seal portion in bag making and filling without using a special bag making and filling device. A packaging bag is provided that is formed by a film being welded at a seal portion, the seal portion having a steam release seal portion that forms a steam flow path as the internal pressure rises, the film having a modified region formed by a surface of the film being subjected to a corona discharge treatment, the steam release seal portion being a portion where a surface opposite the modified region is welded.
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