Sequential Powder Scattering for Decorative Panel Surface Production
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Solution Overview
Problem
The existing production methods for fibre-based panels with decorative surfaces, such as floor panels, face challenges in efficiently mixing and applying materials like wood fibres, melamine formaldehyde binder, aluminium oxide particles, and colour pigments, leading to issues with surface quality, wear resistance, and increased production costs due to the need for precise mixing and separate batch production.
Innovation Solution
The method involves applying separate materials as individual layers directly on the core, where the chemical reaction and heat from pressing combine and mix the materials, eliminating the need for separate mixing and allowing for more flexible and cost-efficient production, with specific scattering equipment designed for each material type to ensure precise application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate materials are mixed together as a homogeneous powder mix before application, then surface quality and material distribution are improved, but production complexity and cost increase due to precise mixing requirements
Solution Approach 1:
The patent divides the powder application process into separate scattering stations, each dedicated to scattering a specific material (wood fibres, binder, wear resistant particles, pigments) individually rather than mixing all materials together beforehand. This segmentation eliminates complex mixing equipment while maintaining surface quality through controlled sequential application.
Solution Approach 2:
Each material is scattered as a separate preliminary layer before the next material is applied. The wood fibres are scattered first to form a base layer, followed by binder, wear resistant particles, and pigments in sequence. This preliminary action of applying materials individually simplifies the production process while ensuring proper material distribution.
2Manufacturing precision
If separate batch production is used for each material, then material composition control is improved, but production time and cost increase
Solution Approach 1:
The patent implements continuous production by scattering all materials in sequence during a single pass through the scattering stations, rather than producing separate batches for each material. The core material moves continuously through the scattering stations where wood fibres, binder, wear resistant particles, and pigments are applied in sequence, eliminating batch production delays while maintaining composition control.
Solution Approach 2:
Each material is prepared and scattered in advance at dedicated scattering stations before the core material reaches that station. This preliminary preparation allows each material to be optimally controlled while the overall process remains continuous, as materials are ready to be applied in sequence without stopping production.
3Manufacturing precision
If multiple separate layers are applied sequentially, then material application precision is improved, but production complexity increases
Solution Approach 1:
The patent uses separate scattering stations for each material type, with each station dedicated to scattering one specific material (wood fibres, binder, wear resistant particles, or pigments). This segmentation allows precise control of each material's application while keeping individual scattering mechanisms relatively simple, avoiding the need for complex multi-functional equipment.
Solution Approach 2:
Each scattering station uses a universal scattering mechanism (roller with protrusions or vibration) that can handle different material types. The scattering devices are designed with multi-functionality to scatter various powders effectively, reducing the need for specialized equipment for each material and thereby reducing overall production complexity.
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 approach results in a high-quality powder-based surface layer with improved production tolerances, reduced costs, and enhanced wear resistance, while allowing for flexible material composition adjustments and reduced material waste.
Implementation Method 1
The binder is a thermosetting binder such as melamine formaldehyde and the fibres are wood based. All these materials are mixed together and applied in dry form as a mixed powder on a core, generally a HDF core, and cured under heat and pressure to a 0.1 - 1.0 mm solid surface layer.
Implementation Method 2
cured under heat and pressure to a 0.1 - 1.0 mm solid surface layer
Implementation Method 3
The binder is a thermosetting binder such as melamine formaldehyde... cured under heat and pressure
Data Source
Figure 1a~1d
Figure 2a~2c
Figure 3a~3d
AI summary
The disclosure relates to methods and equipment to apply a decorative surface on a building panel wherein the surface comprises a mix of fibres, binders, wear resistant particles and pigments. Layers may be applied as separate layers with equipment that applies essentially only one of the materials in the surface mix.