Non-Substrate Adhesive Tape With Primer-Mediated Layer Separation Control
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Solution Overview
Problem
Existing non-substrate adhesive tapes with single adhesive layers face issues with high-temperature shearing properties, layer separation, and poor adhesion to bent surfaces, limiting their application in thin electronic devices.
Innovation Solution
A non-substrate adhesive tape with heterogeneous adhesive layers, featuring a silicone adhesive layer and a primer coating layer interposed between a second adhesive layer, which includes a primer coating layer to enhance adhesion and prevent layer separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a separate substrate layer is inserted between two adhesive layers with different properties, then layer separation is prevented, but the adhesive tape becomes hard and has poor adhesion to bonding surfaces
Solution Approach 1:
The patent introduces a primer coating layer as an intermediary substance between the first and second adhesive layers. This primer layer serves as a mediator that prevents layer separation while maintaining the softness and adhesion properties of the tape, avoiding the need for a separate substrate layer that would compromise flexibility and bonding performance
2Stability of the object's composition
If a separate substrate layer is inserted between adhesive layers, then layer separation is prevented, but repulsion resistance to bent portions deteriorates
Solution Approach 1:
The primer coating layer acts as a flexible intermediary that prevents layer separation without compromising the tape's ability to conform to bent surfaces. Unlike a rigid substrate layer, the primer maintains the softness and flexibility needed for excellent repulsion resistance at bent portions
3Device complexity
If non-substrate adhesive tape is used without a substrate, then manufacturing complexity is reduced, but high-temperature shearing properties deteriorate
Solution Approach 1:
The primer coating layer serves as a critical intermediary that enables non-substrate adhesive tape to achieve both simplified manufacturing and improved high-temperature shearing properties. This layer provides the necessary structural integrity and thermal stability without requiring a separate substrate, thus maintaining manufacturing simplicity while enhancing reliability
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 tape exhibits excellent adhesion to both low and high surface energy materials, maintains stability under bending, and prevents layer separation, suitable for use in thin electronic devices.
Implementation Method 1
a primer coating layer interposed between the first adhesive layer and the second adhesive layer
Data Source
AI summary
A non-substrate adhesive tape with different adhesive properties on both sides and a manufacturing method of the non-substrate adhesive tape are disclosed. The adhesive tape includes heterogeneous first and second adhesive layers that have different properties from each other and are laminated by using a non-substrate primer coating layer. The adhesive tape includes a primer coating layer interposed between a first adhesive layer and a second adhesive layer, and the first adhesive layer is a silicone adhesive layer.