Multi-layered Timber Panel with Porous Middle Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cross-laminated timber panels are heavy due to solid wood construction, making them difficult to handle and transport, while maintaining strength, airtightness, and fire resistance.
Innovation Solution
A multi-layer board design featuring top layers with no gaps and middle layers with material-free cavities filled with low-density materials, using wooden slabs with uneven edges to create gaps, reducing overall weight without compromising strength or performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If solid wood boards are used to construct cross-laminated timber panels, then strength and structural integrity are improved, but weight increases making handling and transport difficult
Solution Approach 1:
The patent introduces cavities within the wood boards of at least one middle layer, creating a porous structure that reduces weight while maintaining structural integrity. The cavities are formed by arranging wooden slabs with uneven lateral edges, creating material-free intermediate spaces that lighten the panel without compromising strength.
Solution Approach 2:
The patent creates a composite structure by combining wood boards with cavities filled with filling material. This composite approach allows the panel to maintain strength through the wood framework while reducing weight through the cavities and lighter filling materials.
2Strength
If boards are arranged close together without gaps to ensure strength and fire protection, then structural integrity and fire resistance are improved, but manufacturing complexity increases due to precise trimming requirements
Solution Approach 1:
The patent deliberately uses asymmetric, uneven lateral edges of wooden slabs to create the cavities in middle layers. This asymmetric approach simplifies manufacturing by eliminating the need for precise trimming to create uniform gaps, while the uneven edges naturally form the desired material-free intermediate spaces.
Solution Approach 2:
The uneven lateral edges of the wooden slabs automatically create the cavities when slabs are arranged next to each other. The structure serves itself by using the natural characteristics of the wood material to form the desired gaps, eliminating the need for additional machining or trimming operations.
3Reliability
If solid wood construction is used to maintain airtightness, then fire resistance and structural integrity are improved, but weight increases and handling becomes more difficult
Solution Approach 1:
The patent uses porous wood boards with cavities in middle layers to reduce weight while maintaining airtightness. The cavities are strategically positioned and filled with appropriate materials to preserve the panel's ability to resist air passage, fire, and sound while significantly reducing overall weight.
Data Source
Figure 1a~1c
Figure 2a~2d
Figure 2e~2f
AI summary
The invention relates to a multi-layered timber panel comprising a first covering layer (1), a second covering layer (2), and at least one middle layer (3) arranged between them, said covering layers (1,2) each being formed from timber layers that comprise a plurality of adjacently arranged timbers (a, b, c). In order to provide such a multi-layered timber panel in a lightweight design and which is comparable to conventional cross-laminated timber panels in terms of strength and other structural properties such as, for example, air tightness, noise absorption, flame retardancy etc., the or at least one middle layer (3) comprises material-free intermediate spaces (4).