Integrated Vehicle Coating Adhesive and Paint Layer
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Solution Overview
Problem
Current decorative coatings for rail vehicles are prone to premature failure due to wind resistance and delamination, leading to a short lifespan and corrosion issues, while also being difficult to remove and requiring toxic chemicals, which complicates maintenance and increases costs.
Innovation Solution
A decorative coating system where the adhesive is integrated into the paint layer, with a thin mechanical support layer and protective varnish, ensuring the adhesive is protected laterally and vertically, eliminating relief and preventing delamination, and allowing for easy replacement without immobilizing the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick adhesive layer (about 200 micrometers) is applied to the exterior surface of the vehicle, then the adhesive provides sufficient bonding strength and pattern coverage, but it forms a relief that creates wind resistance and damages the adhesive prematurely
Solution Approach 1:
The patent changes the thickness parameter of the adhesive layer from about 200 micrometers to a thin layer of about 20 micrometers. This parameter change eliminates the relief effect that causes wind resistance while maintaining adequate bonding strength through the use of a mechanically supportive paint layer beneath the adhesive.
Solution Approach 2:
The patent introduces a mechanically supportive paint layer as an intermediary between the vehicle body and the thin adhesive layer. This intermediary layer provides the mechanical support that would otherwise be provided by a thick adhesive layer, allowing the adhesive to be thin and flush with the surface while maintaining bonding strength.
2Quantity of substance
If the adhesive is applied in relief on the painted surface, then the adhesive provides adequate thickness for pattern deposition and protection, but it creates wind resistance that damages the adhesive and reduces its lifespan to below 7 years
Solution Approach 1:
The patent reduces the adhesive thickness parameter from about 200 micrometers to about 20 micrometers, changing it from a thick relief layer to a thin flush layer. This eliminates wind resistance while the mechanically supportive paint layer compensates for the reduced adhesive thickness by providing structural support.
Solution Approach 2:
The patent shifts the mechanical support function from the vertical dimension (thick adhesive layer) to another dimension by introducing a mechanically supportive paint layer beneath the adhesive. This allows the adhesive to be thin and flush with the surface while maintaining adequate structural support through the underlying paint layer.
3Quantity of substance
If a thick adhesive layer is used to ensure adequate pattern coverage and protection, then the adhesive provides sufficient material for decoration, but it delaminates at speeds exceeding 300 km/h and promotes corrosion
Solution Approach 1:
The mechanically supportive paint layer acts as an intermediary that stabilizes the thin adhesive layer. This intermediary layer provides the structural integrity needed to prevent delamination at high speeds, allowing the adhesive to be thin while maintaining layer stability through the support of the underlying paint layer.
4Shape
If conventional paint application process is used, then large surfaces can be decorated uniformly with thin coating (150 to 200 micrometers), but it does not allow the vehicle to be decorated with patterns having various shapes and colors including digital drawings or photographs
Solution Approach 1:
The patent merges the conventional paint application process with modern adhesive technology. The mechanically supportive paint layer provides the uniform base coat coverage of traditional painting, while the adhesive layer with printed patterns adds the versatility for various shapes, colors, and digital images, combining the advantages of both approaches.
Solution Approach 2:
The adhesive layer contains printed patterns that are copies of desired designs, photographs, or digital images. This copying approach allows versatile pattern deposition on the vehicle surface without requiring custom painting for each design, enabling easy reproduction of various shapes and colors while maintaining surface uniformity through the paint base layer.
Data Source
Figure 1~4
Figure 5A~6B
Figure 7A~8
AI summary
The invention relates to a decorative coating (40) to be applied onto an outer surface (1) of a transport vehicle, said coating including a decorative adhesive (30) that is consecutively made up a bottom adhesive layer (32), a layer (33) for mechanically mounting the adhesive, and an illustrated layer (34) comprising at least one printed pattern, the adhesive (30) being applied onto the outer surface (1) of the vehicle. Said coating also includes a colored paint layer (42) that is applied onto the outer surface (1) of the vehicle outside the surface covered by the adhesive (30), the outer surfaces of the paint layer (42) and the adhesive (30) being continuous. Said coating moreover includes a protective layer (43) that is applied onto the continuous outer surfaces of the paint layer (42) and the adhesive (30). The invention also relates to a decoration method and to a decoration-renewing method.