Ultra-Thin Double-Sided Adhesive Tape for Flexible Electronics
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Solution Overview
Problem
Current double-sided adhesive tapes are too thick and fail to meet the stringent thickness, peel strength, and high-temperature resistance requirements of ultra-thin electronic products, particularly in applications like flexible printed circuits and wireless charging.
Innovation Solution
A high-performance ultra-thin double-sided adhesive tape is developed with a polyester film substrate and a high-performance adhesive coating composed of 100-140 parts of acrylic pressure-sensitive adhesive, 15-20 parts of curing agent, and 130-160 parts of ethyl acetate, applied via micro-gravure coating, achieving a thickness of 0.003-0.010 mm and enhanced adhesion properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of double-sided adhesive tape is reduced to meet ultra-thin electronic product requirements, then the tape can be applied to thinner devices, but the peel strength and bonding performance deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive layer by incorporating specific rubber polymers (natural rubber, synthetic rubber), polyesters, and silicones in controlled ratios. This chemical parameter optimization enables the ultra-thin adhesive layer (3-10 μm) to achieve sufficient peel strength despite the reduced thickness
Solution Approach 2:
The patent uses a composite adhesive formulation combining multiple polymer types (rubber, polyester, silicone) with specific additives. This composite material approach allows the ultra-thin adhesive layer to achieve both the required thinness and adequate bonding performance that cannot be achieved with single-material adhesive layers
2Length of stationary object
If the thickness of double-sided adhesive tape is reduced, then the overall product thickness decreases, but the high-temperature resistance and thermal conductivity deteriorate
Solution Approach 1:
The patent optimizes the chemical composition parameters of the adhesive layer by incorporating heat-resistant polymers (polyesters, silicones) and controlling the ratio of different rubber types. This enables the ultra-thin adhesive layer to maintain structural integrity and bonding strength at elevated temperatures despite the reduced thickness
Solution Approach 2:
The composite adhesive formulation includes heat-resistant polymer components that provide thermal stability. This composite structure allows the ultra-thin adhesive layer to achieve both thinness and adequate high-temperature resistance for wireless charging applications
3Length of stationary object
If the thickness of double-sided adhesive tape is reduced, then the tape can be used in more compact devices, but the bonding strength to low surface energy materials deteriorates
Solution Approach 1:
The patent modifies the chemical composition parameters of the adhesive by incorporating specific rubber polymers and functional additives that enhance adhesion to low surface energy materials. This chemical optimization enables the ultra-thin adhesive layer to achieve sufficient bonding strength despite the reduced thickness
Solution Approach 2:
The composite adhesive formulation includes polymer components specifically selected for their ability to bond to challenging substrates with low surface energy. This composite structure provides the necessary adhesion properties in the ultra-thin configuration
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 resulting adhesive tape achieves improved peel strength, high-temperature resistance, and soft adhesion, suitable for wireless charging applications, thereby enhancing competitiveness in the adhesive tape industry.
Implementation Method 1
a high-performance adhesive coating coated on both sides of the polyester film, wherein the high-performance adhesive coating is composed of the following parts by weight of each component uniformly mixed: 100-140 parts by weight of high-performance acrylic pressure sensitive adhesive
Implementation Method 2
15-20 parts by weight of curing agent
Data Source
AI summary
The invention relates to the technical field of adhesive tape and discloses a high-performance ultra-thin double-sided adhesive tape, including a polyester film substrate, a high-performance adhesive coating coated on both sides of the polyester film, wherein the high-performance adhesive coating is composed of the following parts by weight of each component uniformly mixed: 100-140 parts by weight of high-performance acrylic pressure sensitive adhesive, 15-20 parts by weight of curing agent, and 130-160 parts by weight of ethyl acetate. The thickness of the adhesive tape is 0.003-0.010 mm, with a good adhesion and a mechanical strength.