Multi-layer solid wood panels with parallel fiber alignment
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Solution Overview
Problem
Current wood panel manufacturing methods, such as plywood, result in low-quality panels with significant thickness, limiting their suitability for furniture and decoration applications, particularly with northern European oak or softwood species, which cannot produce wide slabs for secondary and tertiary wood transformations.
Innovation Solution
A method for producing multilayer solid wood panels by debarking and steaming logs to create thin solid wood veneers, which are then sorted, glued, and pressed to form panels with a thickness range of 6 mm to 48 mm, mimicking the appearance of solid wood by aligning wood fibers parallel to each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If plywood panels are manufactured with multiple thin layers, then the total thickness increases to 20-50 mm, but the quality is perceived as low and the thickness is significant
Solution Approach 1:
The log is segmented into multiple thin veneers (1-10 mm thick) through peeling, which are then reassembled into a multi-layer panel. This segmentation allows the panel to maintain a solid wood appearance while achieving variable thicknesses (6-48 mm) suitable for different applications.
Solution Approach 2:
The invention transitions from traditional plywood construction to multi-layer solid wood veneers arranged with parallel fiber directions. This dimensional reorganization in the layer arrangement creates a solid wood appearance while controlling panel thickness, resolving the contradiction between quality perception and thickness.
2Area of stationary object
If traditional plywood methods are used, then panels can be produced, but wide boards for secondary and tertiary processing cannot be obtained with oak or Northern European softwood species
Solution Approach 1:
The log is peeled into thin veneers that can be manufactured in wide formats, overcoming the limitation of obtaining wide boards from solid logs. These veneers are then assembled into panels with large surface areas suitable for secondary and tertiary wood processing.
Solution Approach 2:
The invention creates a composite structure using multiple thin solid wood veneers glued together with parallel fiber directions. This composite approach enables the production of wide panels from species like oak and Northern European softwoods that cannot be obtained as wide solid slabs, while maintaining ease of manufacture for further processing.
3Manufacturing precision
If veneers are glued with parallel fiber directions, then a solid wood appearance is achieved, but the manufacturing process becomes complex
Solution Approach 1:
The veneers are pre-cut to desired lengths and widths before assembly, and the fiber directions are predetermined during the peeling process. This preliminary preparation simplifies the subsequent assembly process while ensuring the parallel fiber arrangement necessary for solid wood appearance.
Solution Approach 2:
The peeling process simultaneously produces veneers with controlled thickness, predetermined fiber direction, and suitable dimensions for assembly. This multi-functional approach reduces manufacturing complexity while achieving the aesthetic quality of solid wood appearance through parallel fiber alignment.
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 method enables the production of high-quality, aesthetically pleasing solid wood panels with variable thickness and width, suitable for furniture and decoration, overcoming the limitations of existing plywood and reconstituted wood panels.
Implementation Method 1
the steaming of said billets; the peeling of the billets after steaming, to form solid wood veneers
Implementation Method 2
gluing the faces of veneers to be assembled, in particular with vinyl glue
Implementation Method 3
Pressing of veneer assemblies to form multi-layered solid wood panels
Data Source
Figure 1
AI summary
The present invention relates to a process for producing multi-layered solid wood panels comprising the steps of debarking (1) logs, sawing (2) the debarked logs to form billets, steaming (3), and peeling (5) the billets to form solid wood veneers with a thickness of 3.2 mm. The veneers are sorted (8) and joined by gluing (10) the faces of the veneers to be joined, in particular with vinyl glue, each veneer assembly preferably comprising between 2 and 16 layers.