Effect Coating Composition for Curved Surfaces
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Solution Overview
Problem
Existing methods for applying core/shell dispersions to surfaces, especially curved or angled ones, face challenges in maintaining and reproducing the color effect, often resulting in diminished or lost effects and poor reproducibility.
Innovation Solution
A process involving a single application of an atomization process for an effect coating composition with a matrix and discrete polymer particles, followed by complete or partial drying of the liquid phase, without intermediate drying steps, using spray coating or inkjet printing, to achieve reproducible and stable color effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If core/shell dispersions are applied to curved or angled surfaces using conventional methods, then the coating can be applied to complex geometries, but the color effect is diminished or lost and reproducibility is poor
Solution Approach 1:
The patent applies a single-layer coating composition with specifically controlled particle size distribution (D10=50-150 nm, D50=200-500 nm, D90=600-1000 nm) to maintain the optical effect on curved and angled surfaces. By optimizing the particle size parameters of the discrete polymer particles in the coating composition, the invention achieves both adaptability to complex geometries and reproducibility of the color effect, resolving the contradiction between versatility and manufacturing precision.
2Productivity
If multiple spraying processes with intermediate drying steps are used, then the coating can be built up in layers, but the effect is lost and the process becomes more complex
Solution Approach 1:
The patent combines multiple coating layers into a single-layer coating composition with optimized particle size distribution. Instead of applying multiple layers with intermediate drying steps, the invention uses one coating step that achieves the desired build-up and optical effect simultaneously, maintaining reliability of the effect while improving productivity.
Solution Approach 2:
The patent eliminates intermediate drying steps by using a single continuous coating process. The coating composition is applied in one step without interruption, maintaining the continuous formation of the lattice structure and preserving the optical effect throughout the coating process, thus ensuring reliability while streamlining productivity.
3Ease of manufacture
If conventional coating methods are used on flat surfaces, then the application is simple, but the method fails to produce reproducible effects on complex geometries
Solution Approach 1:
The patent maintains ease of manufacture by using a straightforward coating process but improves effect reproducibility through precise control of particle size parameters (D10, D50, D90) in the coating composition. The optimized particle distribution ensures that the lattice structure forms correctly even on complex geometries, achieving high manufacturing precision without sacrificing application simplicity.
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 allows for the permanent and reproducible creation of effect coatings with high color brilliance and stability on various surfaces, including those with complex geometries, by forming a defined spatial lattice structure and optimizing particle size distribution.
Implementation Method 1
an effect or color and effect coating composition, which consists of a matrix and discrete polymer particles, is applied once by an atomization process
Implementation Method 2
then fully or partially by complete or partial volatilization of the liquid phase is dried
Implementation Method 3
This coating agent (also referred to in the prior art as a colored polymer system) causes an optical effect. This is due to reflection by interference of the light scattered on the polymer particles
Implementation Method 4
reflection by interference of the light scattered on the polymer particles
Implementation Method 5
application methods were found in which the effect coatings could be produced permanently and reproducibly
Data Source
AI summary
Preparation of effect painting, comprises applying a color- and/or effect bearing coating agent comprising a matrix and discrete polymer particles by ink-jet printing- or dispensing processes and completely or partially drying by complete or partial evaporation of the liquid phase. An independent claim is included for a multi-coat effect painting, obtained by the above process.