Ceramic-Layer Press Tools for Precise Gloss and Surface Structures
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Solution Overview
Problem
Existing pressing tools for producing material boards with decorative layers require environmentally harmful chromium coatings and are costly, lacking in reproducibility and precision in achieving different gloss levels and surface structures.
Innovation Solution
A pressing tool with a pressing surface composed of at least two ceramic layers, one full-surface and one partial, applied using a surface magnetron sputtering system, allowing for different gloss levels and precise surface structures, and enabling easy repair and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If chromium coatings are used on pressing tools to achieve different gloss levels, then the surface appearance quality is improved, but the environmental harm and production cost increase
Solution Approach 1:
The patent changes the material parameter from chromium coating to ceramic coating (specifically aluminum oxide or silicon oxide). This material substitution maintains the ability to achieve different gloss levels through varying coating thicknesses and surface structures, while eliminating the environmental harm associated with chromium coatings. The ceramic layers can be applied in different thicknesses to create the desired gloss variations without requiring harmful chemicals.
Solution Approach 2:
The pressing tool surface is constructed as a composite structure with multiple ceramic layers (first ceramic layer and second ceramic layer) applied over a metallic base structure. This composite approach allows for precise control of surface properties including gloss levels, while using environmentally benign ceramic materials instead of harmful chromium coatings. The multi-layer composite structure enables complex surface geometries and optical properties.
2Manufacturing precision
If multiple chrome layers with different gloss levels are applied using masking and cleaning steps, then the surface structure precision is improved, but the production complexity and cost increase
Solution Approach 1:
The patent simplifies the manufacturing process by changing from a multi-step chrome plating process with masking and cleaning to a direct ceramic coating process. The ceramic layers can be applied in sequence without requiring removal of previous layers, and the gloss levels are controlled by varying coating parameters (thickness, deposition conditions) rather than requiring multiple discrete layers with different materials. This reduces production complexity while maintaining surface structure precision.
3Manufacturing precision
If pressing tools are used to produce material boards with complex surface structures, then the product quality is improved, but the tool wear and maintenance cost increase
Solution Approach 1:
The pressing tool surface is constructed as a composite with a metallic base structure providing mechanical strength and toughness, while the ceramic coating layers (aluminum oxide or silicon oxide) provide wear resistance and surface quality. This composite structure allows the tool to maintain complex surface structures for extended periods while resisting wear from contact with material boards. The ceramic surface can be renewed by re-coating if worn, extending the overall tool service life.
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 provides an environmentally friendly, cost-effective, and reproducible method for producing material boards with varying gloss levels and surface structures, enhancing the quality and realism of the finished products.
Implementation Method 1
applying at least two base structure layers to the support structure to build up the base structure, producing a structured surface on the support structure, applying a first ceramic layer to the surface of the base structure, and applying a second ceramic layer to the structured surface and/or to the applied first ceramic layer
Data Source
Figure 1~2
Figure 3A~3B
Figure 3C~4
AI summary
The invention relates to a press tool having a press surface (2), for producing a workpiece. The press tool comprises a main structure (10) and at least two ceramic layers (11, 12) arranged on the surface (31) and forming the press surface (2). A first ceramic layer (11) has a first degree of gloss and a second ceramic layer (12) has a second degree of gloss that is different from the first degree of gloss of the first ceramic layer (11).