OSB Surface Scanning and Targeted Filling
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Solution Overview
Problem
Oriented Strand Boards (OSBs) have a surface structure with uneven portions and defects due to their geometry, making it difficult to achieve a smooth surface for coating, which limits their applications and requires costly or impractical solutions for surface smoothing.
Innovation Solution
A method involving surface scanning to determine uneven portions and defects, followed by targeted filling with a mixture of wood dust and duroplastic resin, and subsequent coating with resin-impregnated papers to create a smooth surface, using computer-assisted control for precise application and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If OSB is produced using scattered strands in multiple layers, then flexural strength is improved, but surface smoothness deteriorates
Solution Approach 1:
The patent divides the surface treatment process into multiple stages: scanning the surface to identify defects, selectively filling uneven portions with filler material, and applying coating layers. This segmentation allows the core strand structure to maintain its strength-providing scattered arrangement while the surface is separately treated to achieve smoothness.
Solution Approach 2:
The patent applies local quality by using a scanning device to identify specific uneven portions and defects on the OSB surface, then selectively filling only those areas with filler material rather than uniformly treating the entire surface. This allows the bulk structure to maintain its strength-providing configuration while locally correcting surface irregularities.
2Shape
If additional scattering devices for fine chips are installed to generate smooth surface, then surface smoothness is improved, but device complexity and investment cost increase
Solution Approach 1:
The patent applies preliminary action by scanning the OSB surface before coating and identifying uneven portions that need filling. This preliminary detection allows the subsequent filling and coating processes to be precisely targeted, avoiding the need for complex additional scattering devices that would be required to pre-smooth the surface before coating.
Solution Approach 2:
The patent uses filler material as an intermediary substance between the uneven OSB surface and the final coating layer. This filler acts as a mediator that fills in surface irregularities, creating a smooth substrate that enables successful coating without requiring complex additional scattering equipment.
3Shape
If targeted filling with filler is performed based on scanned surface data, then surface smoothness is improved, but processing time and complexity increase
Solution Approach 1:
The patent maintains continuity of useful action by integrating the scanning, filling, and coating processes into a continuous production flow. The scanning device operates on the moving OSB surface, identifies areas needing filling, and the filler is applied in-line, allowing the process to proceed without stopping the production line and minimizing processing time.
Solution Approach 2:
The patent applies self-service by using the OSB's own surface characteristics (the uneven portions detected by scanning) to guide the filling process. The system automatically identifies and fills its own defects without requiring external intervention or complex manual processes, streamlining the operation and reducing processing time.
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
This method allows for cost-effective and simple production of OSBs with a smooth surface, enabling broader applications by addressing the surface irregularities and facilitating coating, thereby enhancing their usability and market potential.
Implementation Method 1
a) scanning the surface of an upper side of the mat (1) or of the pressed panel in order to determine uneven portions and/or defects
Implementation Method 2
targeted filling in of the uneven portions and/or defects with a filler on the basis of the determined position data and volumes in that the filler is scattered on with a scattering device
Implementation Method 3
pressed in a hot press to form a panel of a desired thickness
Implementation Method 4
pressed in a hot press
Implementation Method 5
adhesion occurs between the phenol paper and the core
Data Source
AI summary
The invention relates to a method for producing an OSB, wherein a scattered mat formed by strands adhered in multiple layers is pressed in a hot press to form a panel with a desired thickness, comprising the following steps: a) scanning the surface of an upper side of the mat or of the pressed panel to determine uneven areas and/or faults; b) determining position data of the determined uneven areas and/or faults; c) determining the volumes of the individual uneven areas and/or faults; d) targeted filling of the uneven areas and/or faults with a filling material, based on the determined position data and volumes, wherein e) the filling material is scattered with a scattering device.