Slit Laminated Board Panel for Curved Surface Formation
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Solution Overview
Problem
Existing board panels, such as those made of plywood or plaster, cannot easily form curved surfaces, requiring costly and labor-intensive craftsmanship, and often lack sufficient strength and sound absorption properties.
Innovation Solution
A board panel design featuring stacked layers of hard and soft materials with strategically placed slits, allowing for easy curvature and enhanced sound absorption, while maintaining strength and decoration, using materials like wood and open-cell foam with specific slit configurations to optimize both strength and acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If board panels are bent to provide curved surfaces, then curved shapes can be achieved, but craftsmanship is required which increases time and effort
Solution Approach 1:
The board panel is divided into multiple layers (front face layer, intermediate layer, rear face layer) with slits introduced to create separation planes. This segmentation allows the layers to slide relative to each other, enabling curved surface formation without requiring complex craftsmanship.
Solution Approach 2:
The physical state of the board panel is changed by introducing slits that alter the structural parameters. The slits allow the rigid board panel to undergo deformation and bending by changing the internal friction and connection parameters between layers, making curved surface formation easier.
2Ease of manufacture
If slits go through the board panel in the side direction, then curved surfaces can be formed easily, but the surface part becomes a divided rectangle which reduces strength
Solution Approach 1:
Different regions of the board panel have different properties. The front face layer maintains its integrity and strength for structural support, while the rear face layer contains the slits for ease of bending. This local differentiation allows the panel to be both strong and easily formable.
Solution Approach 2:
The board panel uses a composite structure with multiple layers having different properties. The front face layer provides strength and durability, while the rear face layer with slits provides flexibility and ease of curvature. The combination resolves the contradiction between strength and formability.
3Strength
If bent veneers are laminated to provide strength, then structural integrity is improved, but the board panel cannot be removed which is uneconomical
Solution Approach 1:
The board panel structure transitions from a static, permanently laminated construction to a dynamic system where layers can move relative to each other through the slits. This dynamic structure allows the panel to maintain strength while enabling removal and repositioning, improving economic value.
4Shape
If foamed resin is used as board panel material, then curved surfaces can be formed, but the material provides insufficient strength when pressed from outside
Solution Approach 1:
The invention uses a composite structure where the front face layer (which may include or replace foamed resin) is combined with additional reinforcing layers. This composite approach maintains the curved surface capability while providing the necessary compressive strength that foamed resin alone cannot achieve.
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 board panel can be easily curved and detached, providing superior acoustic properties and maintaining strength, making it suitable for various applications without the need for extensive craftsmanship, and achieving a balance between sound absorption and structural integrity.
Implementation Method 1
For the board panel to provide sound absorbing property, it is desirable that the soft material to be of foam type material. Further it more desirable for the foam type material to have open cells to provide sound absorbing property.
Implementation Method 2
The soft material has elasticity to absorb the pressure (the pressure generated by the weight of a person, for instance, for use in a chair-seat) applied to the surface of the board panel.
Data Source
AI summary
The present invention is transportable economically in a flat state, and easy to attach and detach, and can provide a curved surface simply while maintaining decoration and strength without craftsmanship and absorb sound. Slits are provided on a rectangular board panel comprising two or more layers of a hard material and a soft material. Two or more layers comprising a hard material and a soft material are laminated on a rectangular board panel, and slits having a length of ½ to ¾ of the vertical side are provided thereto. The use of slits makes formation of curved surfaces easy. Since there is no need to reinforce the outside to maintain the strength thereof, the board panel can be removed easily. Even if an external pressure is applied to the board panel, the flexibility of the hard material divided by the slits and the elastic characteristic of the soft material cause the pressure to be dispersed and absorbed, and sound to be absorbed.