Adhesive Tape Mesh Substrate Cutting and Handling
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Solution Overview
Problem
Conventional adhesive tapes are costly and have inadequate ease of handling, leading to potential defects during production, insufficient adhesion, tearing, or residue issues when peeled off, and are difficult to cut, which reduces user workability.
Innovation Solution
An adhesive tape with a substrate featuring a mesh structure made of thermoplastic resin, where first fibers are drawn in the length direction and second fibers in the width direction, with specific thickness, width, tensile strength, and bending resistance characteristics, enhancing ease of cutting and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mesh laminate including first and second mesh films is used as substrate, then the adhesive tape becomes easier to cut, but the cost increases and handling during production becomes difficult
Solution Approach 1:
The patent applies parameter changes by precisely controlling fiber dimensions (thickness ≤0.04mm, width ≤0.6mm for first fibers) and mechanical properties (tensile strength 130-250 N/50mm, bending resistance 40-80mm in first direction, 65-95mm in second direction) of the mesh structure to achieve optimal balance between ease of cutting and ease of manufacture
2Productivity
If the mesh laminate characteristics are inappropriate, then productivity decreases due to defects during production, but changing characteristics may affect adhesion and workability
Solution Approach 1:
The patent establishes specific parameter ranges for the mesh structure (tensile strength 130-250 N/50mm, bending resistance 40-80mm in first direction, 65-95mm in second direction) that simultaneously ensure high productivity during production and reliable adhesion and workability during use
3Reliability
If conventional substrates are used, then adhesion may be insufficient or tearing may occur, but improving substrate strength may reduce ease of cutting
Solution Approach 1:
The patent applies local quality by creating anisotropic mechanical properties in the mesh structure, with specific bending resistance values differentiated between first direction (40-80mm) and second direction (65-95mm), allowing the substrate to be strong enough to prevent tearing while remaining easy to cut along specific directions
Solution Approach 2:
The patent optimizes the balance between strength and cuttability by precisely controlling fiber dimensions and mechanical properties, achieving tensile strength of 130-250 N/50mm and specific bending resistance values that provide both adhesion reliability and ease of cutting
Data Source
AI summary
A substrate 2 of an adhesive tape 1 includes a mesh structure made of thermoplastic resin. The mesh structure has a structure in which multiple first fibers drawn in a first direction corresponding to a length direction of the adhesive tape and multiple second fibers drawn in a second direction corresponding to a width direction of the adhesive tape are layered or woven. (a) A first fiber has a thickness of 0.04 mm or less, and a width of 0.6 mm or less, (b) a second fiber has a thickness greater than that of the first fiber, and a width greater than or equal to that of the first fiber, (c) the mesh structure has a tensile strength in the first direction of from 130 to 250 N/50 mm, (d) the mesh structure has a bending resistance in the first direction obtained by a cantilever test of from 40 to 80 mm, and (e) the mesh structure has a bending resistance in the second direction obtained by the cantilever test of from 65 to 95 mm.