Coating Material with Weakened Areas for Irregular Surfaces
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Solution Overview
Problem
Existing coating materials for uneven surfaces, such as door rabets, are sensitive to impact and often leave adhesive residues and gaps when applied to complex geometries, limiting their effectiveness and quality.
Innovation Solution
A coating material with a carrier layer and an activatable adhesive layer, featuring weakened areas such as recesses or porosity, allowing for increased flexibility and easier application around edges and corners, enabling the use of thicker materials and reducing the visibility of the adhesive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a thin coating material is used to press it against the predefined surface and bend it around edges or corners, then the coating material can be applied to irregular surfaces, but it becomes comparatively sensitive to impact in the area of edges
Solution Approach 1:
The coating material features localized weakened areas (recesses or porosity) at specific positions corresponding to edges and corners, while maintaining full thickness in other areas. This local modification allows the material to bend easily at critical locations without compromising overall strength and impact resistance.
Solution Approach 2:
The coating material is segmented into regions of different thicknesses - full thickness in most areas for strength, and locally thinned areas at edges and corners for flexibility. This segmentation enables the material to simultaneously achieve both impact resistance and ease of application on irregular surfaces.
2Reliability
If adhesive is applied shortly before application to a workpiece, then the coating material can be bonded to the surface, but adhesive residues remain and a gap between the actual coating material and the workpiece is visible
Solution Approach 1:
The adhesive layer is locally reduced or eliminated at the edges of the coating material through the weakened areas. This local modification prevents adhesive from oozing out and creating visible residues or gaps, while the central portion retains full adhesive coverage for reliable bonding.
3Manufacturing precision
If comparatively thicker coating materials are used to increase the value of the coated component, then the quality and appearance are improved, but the material becomes difficult to apply around edges and corners
Solution Approach 1:
The coating material maintains its full thickness in most areas to ensure high quality and appearance, while localized weakened areas are created at edges and corners. This allows the material to be comparatively thick overall while still being easily applicable to complex geometries at critical locations.
Data Source
Figure 1a~1b
Figure 2
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AI summary
The present invention relates to a coating material, in particular a narrow-area coating material, for coating an irregular surface of a workpiece, and to a method. The coating material has at least one weakened area.