Folded Compression Bag Sealing Structure for Corner Leak Prevention
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Solution Overview
Problem
Existing vacuum compression bags suffer from air leakage at their corners, leading to mildew growth and reduced storage efficiency.
Innovation Solution
A compression bag design featuring inwardly folded folding portions, a sealing strip, and a one-way valve, with thermocompression-sealed edges and laminated edges to enhance airtightness, and a viewing window for easy item location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vacuum compression bags use simple sealing structures, then manufacturing cost is reduced, but air leakage occurs at corners leading to mildew growth and compression failure
Solution Approach 1:
The sealing structure is divided into multiple independent sealing strips positioned at different locations (first sealing strip at the open end, second sealing strip at the corner, third sealing strip at the other end). Each sealing strip independently seals specific sections, preventing air leakage at corners and edges separately. This segmentation allows the system to achieve comprehensive sealing without requiring a single complex sealing mechanism.
Solution Approach 2:
Different sealing strips are placed at specific critical locations (open end, corners, opposite end) where air leakage is most likely to occur. The sealing resources are concentrated at these vulnerable points rather than uniformly distributed, providing enhanced sealing quality exactly where needed to prevent corner leakage and mildew growth.
2Productivity
If the bag body is fully sealed for vacuum compression, then storage efficiency is improved, but item retrieval becomes difficult
Solution Approach 1:
The sealing system is segmented into multiple independent sealing strips that can be opened selectively. The first sealing strip at the open end can be opened for item retrieval while the second and third sealing strips maintain sealing at corners and the opposite end. This allows partial access to items without compromising the overall vacuum seal and storage efficiency.
Solution Approach 2:
The sealing strips are designed to be dynamically openable and closable. The first sealing strip can be opened to access items while maintaining the vacuum seal elsewhere in the bag. This dynamic sealing capability enables the bag to transition between sealed storage mode and partial access mode, combining storage efficiency with operational convenience.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves airtightness, prevents mildew, and enhances storage efficiency by preventing air leakage and facilitating easy item retrieval.
Implementation Method 1
the one-way valve allows unidirectional flow from inside to outside, ensuring that a fluid (for example, which may include gas) in the compression bag is discharged through the valve hole
Implementation Method 2
an edge of at least one end of the bag body is thermocompression-sealed
Data Source
AI summary
A compression bag is provided. The compression bag includes a bag body, a sealing strip, and a one-way valve, where two sides of the bag body are respectively folded inwardly to form folding portions; portions between the folding portions respectively form bag sheets; two ends of the bag body are sealed; an edge of at least one end of the bag body is thermocompression-sealed; an elongated hole and a valve hole are formed in the bag body; the sealing strip is fixedly provided in the elongated hole; and the one-way valve is fixedly provided in the valve hole, and allows unidirectional flow from inside to outside. At two sides of the compression bag, the folding portions for changing a volume through expansion and contraction and the bag sheets connected between the folding portions are all obtained by folding different parts of the bag body.