Dielectric Heating Adhesive Sheet for Strong Glass Bonding
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Solution Overview
Problem
Existing bonding methods for glass materials require high energy consumption, long pressure retention times, or insufficient bonding strength, as seen in current thermoplastic resin compositions, glass adhesion sheets, and dielectric heating adhesive films.
Innovation Solution
A high-frequency dielectric heating adhesive sheet containing silane-modified polyolefin as the thermoplastic resin with a melt flow rate of 2-50 g/10 min, a dielectric filler like zinc oxide, and specific properties for heat generation and bonding strength, ensuring low energy consumption and high bonding strength to glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If thermoplastic resin composition is used for bonding glass, then bonding can be achieved, but a lot of energy is required for adhesion
Solution Approach 1:
The patent changes the melt flow rate parameter of the thermoplastic resin from conventional ranges to specifically 2-50 g/10 min, and adjusts the dielectric filler content to 5-50 vol%, optimizing the balance between energy consumption and bonding strength. This parameter optimization enables efficient heat generation at lower energy input while maintaining strong glass adhesion.
Solution Approach 2:
The patent creates a composite adhesive sheet combining thermoplastic resin with dielectric fillers (such as zinc oxide, barium titanate, or titanium oxide). This composite structure enables dielectric heating capability within the adhesive layer, allowing localized heat generation during bonding that reduces overall energy consumption while achieving strong bonding to glass surfaces.
2Strength
If glass adhesion sheet is used for bonding glass, then adhesion to glass surface is achieved, but pressure retaining time during vacuum lamination is long
Solution Approach 1:
The patent utilizes phase transition of the thermoplastic resin from solid to molten state through dielectric heating. The resin melts at controlled temperatures, enabling rapid wetting and adhesion to glass surfaces, then solidifies upon cooling to form strong bonds. This phase transition mechanism dramatically reduces the pressure retaining time required compared to conventional adhesive sheets that rely on slow chemical curing or mechanical deformation.
3Strength
If dielectric heating adhesive film is used for bonding glass, then bonding can be achieved, but sufficient bonding strength to glass material is not likely to be obtained
Solution Approach 1:
The patent incorporates dielectric fillers specifically within the adhesive layer to create localized heat generation zones. This local quality enhancement allows heat to be generated precisely where needed (at the bonding interface) through dielectric heating, improving bonding strength to glass without requiring high overall energy consumption. The dielectric fillers concentrate electromagnetic energy conversion at the critical bonding region.
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 strong bonding to glass with low energy consumption and efficient heat generation, providing excellent adhesion and flexibility in manufacturing processes.
Implementation Method 1
a dielectric material that generates heat upon application of a high-frequency electric field
Data Source
AI summary
A high-frequency dielectric heating adhesive sheet includes an adhesive layer that at least contains a thermoplastic resin and a dielectric material that generates heat upon application of a high-frequency electric field. The adhesive layer contains silane-modified polyolefin as the thermoplastic resin, and a melt flow rate (MFR) at 190 degrees C. of the thermoplastic resin is in a range from 2 g/10 min to 50 g/10 min.