Fiber Sheet Lamination with Local Adhesion Control for Bending
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Solution Overview
Problem
In laminated fiber sheets, strong interlayer adhesive forces prevent appropriate sliding during bending, leading to wrinkles, while weak adhesive forces cause peeling during handling or transportation.
Innovation Solution
A lamination device and method that adjusts interlayer adhesive forces by controlling pressing forces and heating temperatures differently in bending and non-bending regions, allowing for controlled sliding and preventing peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If strong interlayer adhesive force is applied to laminated fiber sheets, then peeling during handling and transportation is prevented, but wrinkles occur during bending due to inability of layers to slide appropriately
Solution Approach 1:
The patent applies different interlayer adhesive forces to different regions of the fiber sheet laminate. Specifically, the bending region is designed with weaker interlayer adhesion to allow layer sliding and prevent wrinkles, while non-bending regions maintain stronger adhesion to prevent peeling during handling. This spatial differentiation of adhesive properties resolves the contradiction between preventing wrinkles and preventing peeling.
2Manufacturing precision
If weak interlayer adhesive force is applied to laminated fiber sheets, then wrinkles are suppressed during bending due to appropriate layer sliding, but peeling occurs during lamination and handling
Solution Approach 1:
The patent implements region-specific adhesive control where the bending region has reduced interlayer adhesion (through lower pressing force or temperature) to enable layer sliding and prevent wrinkles, while non-bending regions maintain standard or higher adhesion levels to ensure structural integrity and prevent peeling during handling and transportation.
3Productivity
If uniform pressing force is applied during lamination, then efficient manufacturing is achieved, but wrinkles occur in bending regions due to excessive adhesion preventing layer sliding
Solution Approach 1:
The patent employs spatially varying pressing force during lamination, applying lower pressing force specifically to bending regions to reduce interlayer adhesion and allow layer sliding, while maintaining higher pressing force in non-bending regions for efficient bonding. This localized control of pressing force enables both wrinkle prevention and manufacturing efficiency.
Solution Approach 2:
The patent implements dynamic control of pressing force and temperature parameters during the lamination process. The pressing force and temperature are adjusted in real-time based on the regional requirements (bending vs. non-bending areas), allowing the system to adapt adhesive properties during the lamination process itself to prevent wrinkles while maintaining productivity.
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
Suppresses wrinkles during bending and prevents peeling between layers by ensuring appropriate interlayer sliding in bending regions and maintaining strong adhesion in non-bending regions.
Implementation Method 1
an adjustment unit that adjusts an interlayer adhesive force that is applied to the laminated fiber sheets
Implementation Method 2
a heat adjustment unit that adjusts a heating temperature that is applied to the fiber sheet
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
To enable suppression of the occurrence of wrinkles during bending and enable suppression of peeling between layers. The lamination device 1 as in the present disclosure comprises: a supply unit (2) that supplies and laminates fiber sheets (30); a press adjustment unit (6) or a heat adjustment unit (7) that adjusts the interlayer adhesive force that is applied to the laminated fiber sheets (30); and a control unit (8) that controls the press adjustment unit (6) or the heat adjustment unit (7) such that the interlayer adhesive force of a non-bending region (30B) that is different from a bending region (30A) in which the fiber sheets are bent becomes stronger than the interlayer adhesive force of the bending region (30A).