Stretch Frame With Pressure-Sensitive Adhesive Release Layer
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Solution Overview
Problem
Current methods for producing electroactive polymer devices are labor-intensive and costly due to the need for frequent cleaning of stretch frames and multiple processing steps, which hampers high-volume manufacturing while maintaining precision and consistency.
Innovation Solution
The use of a stretch frame with a pressure-sensitive adhesive and a release layer to bond and easily remove pre-strained films, allowing for thinner frames that reduce manufacturing cycle time, waste, and labor, while enabling improved lamination integrity and increased throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional stretch frames are used without release layers, then film bonding is achieved, but extensive cleaning is required after each use increasing labor and time
Solution Approach 1:
The stretch frame surface is segmented into functional layers: a reusable stretch frame body and a disposable release layer coated with pressure-sensitive adhesive. The release layer is separated from the frame body, allowing it to be discarded after single use while the frame remains clean for reuse.
Solution Approach 2:
The release layer is designed as a disposable component that is inexpensive to manufacture and replace. After the film is bonded to the release layer, the entire release layer with the film is removed and discarded, eliminating the need to clean the expensive stretch frame.
2Strength
If thick stretch frames are used, then structural strength is maintained, but manufacturing cycle time increases and throughput decreases
Solution Approach 1:
The stretch frame is designed with a thin profile while maintaining sufficient structural strength through optimized geometry and material selection. The frame thickness is reduced to minimize manufacturing cycle time while still providing the necessary support for the film stretching and bonding process.
3Manufacturing precision
If multiple processing steps are used for film bonding, then lamination integrity is achieved, but labor intensity and cost increase
Solution Approach 1:
The pressure-sensitive adhesive on the release layer provides self-bonding capability when the film is applied to the stretch frame. The adhesive activates under light pressure without requiring additional heating, curing, or complex bonding equipment, achieving reliable lamination through the inherent properties of the adhesive material.
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
This approach reduces manufacturing costs, simplifies the lamination process, and increases production efficiency by eliminating the need for extensive cleaning and allowing the use of narrower frames, thereby enhancing the production of electroactive polymer devices.
Implementation Method 1
a pressure sensitive adhesive (PSA) applied to at least a portion of the frame
Data Source
AI summary
An apparatus comprising a frame and a pressure sensitive adhesive applied to at least a portion of the frame, where the pressure sensitive adhesive is arranged to bond a pre-strained film to the frame is disclosed. A method of making the apparatus also is disclosed. Also disclosed is a method of preparing a stretch frame for manufacturing electroactive polymer devices thereon.