Pressing Element Chrome Coating for Wood-Like Gloss Variation
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Solution Overview
Problem
Existing pressing elements used in the wood processing industry struggle to replicate the natural appearance of wood surfaces, often resulting in a surface structure that appears significantly different from the natural material it aims to imitate.
Innovation Solution
A method for processing the surface of a pressing element involves chrome-plating with layers oriented in different directions, applying a mask using digital printing technology, and chemically treating the exposed areas to partially remove the chrome coating, resulting in areas with different grades of gloss and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If repeated masking steps with chemically-resistant wax and chemical etching steps are used to structure the pressing element surface, then deep structure and different grades of gloss can be obtained, but the surface structure appears considerably different from natural wood
Solution Approach 1:
The invention changes the physical-chemical parameters of the chrome coating by applying multiple layers with different orientations and performing selective chemical treatment. This creates areas with different grades of gloss and color that more closely resemble natural wood variations, resolving the contradiction between structured surface depth and natural appearance realism
Solution Approach 2:
The invention uses a composite chrome coating structure with multiple layers having different grain orientations, combined with selective chemical treatment areas. This composite approach creates a surface that maintains deep structure while achieving natural wood-like appearance through varied gloss and color regions
2Measurement precision
If chrome-plating with multiple layers and selective chemical treatment is applied, then realistic wood appearance with different grades of gloss and color is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The invention applies preliminary chrome-plating layers with specific orientations before the final chemical treatment step. This preliminary structuring of the chrome coating allows the subsequent masking and chemical treatment to more efficiently create realistic wood appearance, reducing overall process complexity while maintaining high realism
Solution Approach 2:
The chrome-plating process is segmented into multiple layers with different orientations, and the chemical treatment is applied selectively to specific areas. This segmentation allows independent optimization of each layer's contribution to the final appearance, making the complex process more controllable and manageable
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 enhances the appearance of the surface structure on coated panels, making it more similar to natural wood by creating realistic shadings and chromatic reflections, thereby improving the natural appearance of the finish.
Implementation Method 1
chrome-plating said surface of the pressing element so as to form a coating comprising a first layer having chrome grains oriented in a first direction and a second layer overlapping said first layer, said second layer having chrome grains oriented in a second direction
Implementation Method 2
chemically treating the chrome-plated surface of the pressing element on which said mask was applied, said chemical treatment being performed so as to partially remove said chrome coating in the exposed areas
Data Source
AI summary
A method for processing a smooth or structured surface of a pressing element is described, the method comprising the steps of: a) chrome-plating said surface of the pressing element so as to form a coating comprising a first layer having chrome grains oriented in a first direction and a second layer overlapping said first layer, said second layer having chrome grains oriented in a second direction which is different from said first direction; b) applying a mask on the chrome-plated surface of the pressing element by means of a digital printing technology; c) chemically treating the chrome-plated surface of the pressing element on which said mask was applied, said chemical treatment being performed so as to partially remove said chrome coating in the exposed areas of said chrome-plated surface, i.e. in the areas not being protected by said mask, and d) removing said mask from the chrome-plated surface of the pressing element, obtaining a smooth or structured surface having a coating with areas having a different grade of gloss and colour.A pressing element obtained by the above processing method and a method for the production of coated panels, such as panels for furniture or floors, bearing a predetermined decorative pattern which uses such pressing element are also described.