Adhesive Sheet Peel Force Control for Residue-Free Rework
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Solution Overview
Problem
Existing adhesive sheets fail to balance adhesiveness, flatness, and reusability, often resulting in inadequate bonding duration, adhesive residue contamination, and poor peelability.
Innovation Solution
An adhesive sheet with a controlled 180° peel adhesive force range of 0.1 N to 12 N when adhered to a stainless steel plate, combined with specific surface roughness and adhesive layer composition, including a base polymer, tackifying resin, and crosslinking agent, to ensure excellent adhesiveness, flatness, and reworkability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive sheets have strong adhesion properties, then bonding durability is improved, but adhesive residue contamination increases after peeling
Solution Approach 1:
The patent controls the 180° peel adhesive force within a specific range (0.1 N to 6 N after 0.5h, 6 N to 12 N after 24h) to balance bonding durability and peelability. This parameter optimization ensures strong initial adhesion while preventing excessive residue upon removal, directly resolving the contradiction between bonding strength and residue-free peeling.
2Reliability
If adhesive sheets have good adhesiveness and flatness, then adhesion to adherend is improved, but reusability deteriorates
Solution Approach 1:
The patent optimizes the peel adhesive force parameters to enable controlled peeling after use. By setting specific force ranges that allow complete removal without damage, the adhesive sheet can be reused multiple times while maintaining its adhesiveness and flatness properties during each application cycle.
3Ease of operation
If adhesive sheets are designed for easy peeling, then peelability is improved, but bonding duration decreases
Solution Approach 1:
The patent establishes different peel adhesive force ranges for different time periods: 0.1 N to 6 N after 0.5h and 6 N to 12 N after 24h. This time-dependent parameter control ensures the adhesive maintains strong bonding for extended durations while still allowing controlled, residue-free removal when needed, balancing peelability with bonding duration.
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
The adhesive sheet achieves excellent adhesiveness, flatness, and reusability, allowing for gentle peeling without residue contamination and maintaining operational effectiveness.
Implementation Method 1
an adhesive layer disposed on at least one surface of the substrate layer
Data Source
AI summary
The present disclosure provides an adhesive sheet. The adhesive sheet of the present disclosure comprises a substrate layer and an adhesive layer disposed on at least one surface of the substrate layer, wherein a 180° peel adhesive force to a stainless steel plate, measured when the adhesive sheet is adhered to the stainless steel plate and left at 23° C.×50RH % for 0.5 h, is from 0.1 N to 6 N. The adhesive sheet of the present disclosure has excellent adhesion, flatness and reusability (reworkability), and is easily peelable after use.