Mesh Bag Closure Bulge Retainer to Prevent Clip Slippage
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Solution Overview
Problem
Existing mesh bag closing methods using ancillary closing elements, such as clips, straps, and adhesive tapes, suffer from issues like slippage and increased manufacturing costs, especially when handling bulky products, and can complicate automated processes.
Innovation Solution
Bond packed yarns of the mesh bundle together to form a bulge that acts as a retainer, preventing the mesh from slipping relative to the closing element, while maintaining compatibility with automated processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an ancillary closing element is applied around a transversely collected portion of the mesh bag to tightly girdle it, then the bag end is kept closed, but the mesh may slip through the closing element or the closing element may slip relative to the mesh when the bag is pulled
Solution Approach 1:
The patent applies a preliminary bonding treatment to the mesh yarns before applying the closing element. The yarns are bonded together in specific patterns (such as in groups of 3, 5, or 7 adjacent yarns) to create a pre-conditioned mesh structure that resists slipping. This preliminary action of bonding the yarns creates friction and mechanical interlocking that prevents the mesh from slipping through the closing element during subsequent pulling operations.
Solution Approach 2:
The patent changes the physical parameters of the mesh yarns by applying heat, pressure, or chemical treatments to bond adjacent yarns together. This bonding process alters the surface properties and mechanical characteristics of the yarns, increasing their friction and resistance to sliding. The bonded yarns create a more stable mesh structure that maintains its position relative to the closing element under load.
2Strength
If more material is used to manufacture ancillary closing elements, then they can withstand pulls on the mesh better, but the manufacturing cost increases
Solution Approach 1:
Instead of making the closing element itself stronger and more material-intensive, the patent applies a preliminary bonding treatment to the mesh yarns. This shifts the strength enhancement from the closing element to the mesh structure itself. The bonded yarns provide the pull resistance through friction and mechanical interlocking, allowing the use of lighter, less expensive closing elements while maintaining or improving overall pull resistance.
Solution Approach 2:
The patent replaces the mechanical strength approach (using more material in the closing element) with a friction-based mechanical system. By bonding the yarns together, the system uses friction and interlocking forces between bonded yarn groups to resist pulling forces, rather than relying solely on the mass and strength of the closing element itself.
3Reliability
If the mesh yarns are bonded together to form bulges, then the retention of the closing element is enhanced, but the manufacturing time increases
Solution Approach 1:
The patent applies bonding to only certain groups of adjacent yarns (such as groups of 3, 5, or 7 yarns) rather than bonding all yarns throughout the entire mesh bag. This partial action approach creates sufficient retention enhancement at critical locations (near the closing element) without the time cost of processing the entire mesh structure. The selective bonding of specific yarn groups provides the necessary friction and interlocking where it is most needed.
Solution Approach 2:
The bonding is applied locally to specific regions of the mesh, particularly in the area where the closing element will be applied. By concentrating the bonding treatment in local zones rather than uniformly across the entire mesh, the patent achieves enhanced retention of the closing element while minimizing the overall manufacturing time. The local quality change creates high-friction zones exactly where the closing element needs to grip the mesh.
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
Enhances the retention of the closing element, significantly increasing the number of pulls the bag can withstand without opening, even when using minimal additional time in the manufacturing process.
Implementation Method 1
bonding packed yarns of the mesh bundle together to form at least one bulge that acts as a retainer
Data Source
Figure 1~2
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AI summary
The present invention relates to a method for closing a mesh bag (100) comprising applying an ancillary closing element (1) around a transversely collected portion (9) of the bag, tightly girdling the same, thereby determining on a first side of the closing element a storage portion of the bag (100a) and on a second side of the closing element, adjacent thereto, a mesh bundle (100b), the method further comprising the operation of bonding yarns of said mesh bundle (100b) together to form at least one bulge (20) that acts as a retainer as it prevents, by abutment with the ancillary closing element, the mesh bundle (100b) from passing from the second side to the first side of said ancillary closing element.