Mesh Bag Label Strip Slit Design for Stapling Deformation
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Solution Overview
Problem
Conventional plastic and bioplastic labels for mesh bags face issues with tear resistance, tensile strength, and print quality, leading to increased waste and material usage, while paper labels break easily due to rigidity and deformation during stapling.
Innovation Solution
A roll-up label strip with a longitudinal cut or slit in the joining area to reduce resistance to transverse constriction, allowing it to adapt to the shape of the accessory pressing element without lifting, using paper materials without plastic reinforcements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If paper labels are used for mesh bags, then sustainability is improved and material cost is reduced, but tear resistance and deformation capacity deteriorate causing label breakage during stapling
Solution Approach 1:
The joining area of the label is divided into multiple longitudinal strips by making longitudinal cuts. This segmentation allows each strip to independently deform and adapt to the stapling operation, preventing the entire label from breaking while maintaining attachment integrity. The label is divided into a main portion and a joining area with multiple strips that can flex separately during the closing operation.
Solution Approach 2:
The label structure is differentiated into zones with different properties: the main portion maintains full strength for information display, while the joining area is locally modified with longitudinal cuts to provide enhanced flexibility and deformation capacity specifically where the staple applies force. This local modification allows the label to have both strength where needed and flexibility where required.
2Strength
If label thickness is increased to improve tear resistance, then label strength is improved, but deformation capacity and adaptability to accessory element deteriorate
Solution Approach 1:
By dividing the joining area into multiple thin longitudinal strips through longitudinal cuts, the label achieves both tear resistance and deformation capacity. Each individual strip remains thin and flexible for adapting to the accessory element shape, while the collective arrangement of multiple strips provides overall strength and resistance to tearing during the stapling operation.
Solution Approach 2:
The longitudinal cuts create a dynamic structure in the joining area where the multiple strips can independently flex, bend, and adapt to the contours of the accessory pressing element. This dynamic configuration allows the label to transform from a rigid single-layer structure to a flexible multi-strip structure that can conform to the stapling operation requirements.
3Strength
If conventional plastic materials are used for labels, then tear resistance and tensile strength are improved, but sustainability and environmental impact deteriorate
Solution Approach 1:
The invention changes the material parameter from conventional plastic to paper, fundamentally altering the environmental characteristics of the label while maintaining functional performance. By combining paper material with a specific structural configuration (longitudinal cuts in joining area), the label achieves both sustainability and the necessary mechanical properties for mesh bag application.
4Object-generated harmful factors
If label thickness is reduced to improve sustainability, then waste generation is reduced, but tear resistance and manufacturing precision deteriorate
Solution Approach 1:
The label structure is differentiated into zones with different thickness and structural characteristics: the main portion maintains sufficient thickness and integrity for high-quality printing and information display, while the joining area is locally modified with longitudinal cuts to provide flexibility. This local differentiation allows thin paper material to be used overall while maintaining print quality in the main portion and deformation capacity in the joining area.
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~4c
AI summary
The invention relates to a roll-up strip (100) of labels (10, 10') that can be separated by a transverse cut of the strip, distinguishing on each label a main portion (2) from at least one of the longitudinal opposite ends (21, 22) of which there extends a longitudinal extension (3) of a smaller width than that of the main portion (2) and which distal end (31) defines a joining area (A) intended to be attached to a bag by external application of an accessory pressing element, the strip being able to be devoid of any reinforcement or filler made of plastic material, and a longitudinal cut or slit (6) being made in each joining area (A) of the labels of the strip, said cut or slit defining two portions (61, 62) therein, the purpose of which is to reduce the resistance offered by the said joining area to a deformation by transverse constriction to which it will be subject when the accessory pressing element is applied to it from the outside in the bag closing operation.