OSB Covering Panel With Decoupling Layer
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Solution Overview
Problem
Existing wood-based covering panels face challenges with high costs and complex manufacturing due to differences in expansion behavior between real wood and carrier materials, leading to warping issues, especially with OSB panels which are not typically used for floor coverings due to moisture-related dimensional changes.
Innovation Solution
A covering panel design featuring a moisture-protected OSB carrier board with a decoupling layer and a barrier layer, allowing the carrier and decorative layers to expand differently without warping, using phenolic resin and resin films to prevent moisture exchange and ensure decoupling, enabling the use of cost-effective materials like OSB for real wood surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a layer of real wood is set up on a carrier board made of OSB material, then the cost is reduced compared to solid wood, but the different expansion behavior of the real wood layer and carrier material causes warping and gap opening
Solution Approach 1:
A decoupling layer made of elastomeric material is introduced between the real wood layer and the OSB carrier board. This intermediary layer allows the two materials to expand and contract independently at different rates while maintaining their bond, preventing warping and gap opening. The elastomeric material acts as a buffer that accommodates differential thermal and moisture expansion without transmitting stresses that would cause deformation.
2Stability of the object's composition
If thin wooden sticks are used as carrier material for real wood layer, then the expansion behavior difference can be compensated, but the manufacturing complexity and material costs increase
Solution Approach 1:
The invention changes the material parameter of the carrier board from traditional rigid wood or plywood to OSB (oriented strand board), which has different expansion characteristics. Combined with the elastomeric decoupling layer, this parameter change allows the use of more economical OSB material while maintaining dimensional stability. The elastomeric layer compensates for the expansion differences between OSB and real wood, eliminating the need for complex wooden stick structures.
3Device complexity
If plywood is used to substitute wooden sticks for carrier layer, then manufacturing is simplified, but warpage and gap opening problems occur
Solution Approach 1:
The elastomeric decoupling layer serves as a mediator between the plywood carrier board and the real wood layer. This intermediary allows the plywood to be used as carrier material (which is easier to manufacture than wooden sticks) while preventing the warpage and gap opening problems that would otherwise occur due to differential expansion between the plywood and real wood layers.
4Ease of manufacture
If laminate panels with printed paper decorative layer are used, then costs are reduced and expansion behavior differences are avoided, but the surface quality and attractiveness are compromised
Solution Approach 1:
The invention creates a composite structure combining OSB carrier board, elastomeric decoupling layer, and real wood decorative layer. This composite material approach allows the use of inexpensive OSB as the carrier while maintaining a high-quality real wood surface. The elastomeric layer enables this combination by accommodating the expansion differences between the inexpensive carrier material and the premium real wood layer, thus achieving both cost-effectiveness and surface quality.
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 solution effectively decouples the carrier and decorative layers, preventing warping and allowing the use of less expensive materials, simplifying installation and reducing manufacturing complexity while maintaining a high-quality real wood surface, thus combining the advantages of laminate panels and finished parquet.
Implementation Method 1
the carrier board and the decorative layer can expand differently
Implementation Method 2
The decoupling layer is quasi-elastic and has the effect that the differences that occur in the expansion behavior of the decorative layer and the carrier plate are at least largely compensated for
Implementation Method 3
the carrier board is provided with a barrier layer made from a first material, in particular from phenolic resin, which is intended to protect the carrier board from moisture
Implementation Method 4
a resin film is applied to the carrier board, in particular to the upper side of the carrier board, before the decoupling layer is applied
Data Source
Figure 1~1A
Figure 2
Figure 3
AI summary
The panel (20) has a carrier slab (22) e.g. oriented strand board-slab, made of a derived timber product and including upper and lower sides, and a decoration layer (21) e.g. veneer layer, arranged at the upper side. A barrier layer (24) is attached in the lower side and made of a material that protects the slab from moisture. An isolation layer (23) is attached on the upper side, made of a material e.g. resin film, and isolates the decoration layer from the slab such that the slab and the decoration layer are variably expanded. The barrier and isolation layers are made of paper. An independent claim is also included for a method for manufacturing a covering panel.