Matte Urethane Golf Ball Coating for Approach Shot Spin
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Solution Overview
Problem
Existing golf balls with matte coatings containing delusterants have reduced spin performance on approach shots due to increased surface roughness and decreased static coefficient of friction.
Innovation Solution
A golf ball coating composition using a two-part curable urethane coating with a delusterant mixture of silica and polyurethane, within specific weight and particle size ranges, to maintain a matte appearance while improving spin performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a delusterant-containing coating composition is used to achieve a gloss-free appearance, then the matte appearance is improved, but the spin performance on approach shots deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the delusterant content within 8-30 parts by weight per 100 parts by weight of coating solids, and by specifying particle size ranges (0.1-20 μm for average particle size, with preferred ranges of 0.2-10 μm and more preferably 0.5-5 μm). This optimization of physical parameters achieves the optimal balance between matte appearance and spin performance
Solution Approach 2:
The patent uses composite materials by formulating a two-part curable urethane coating composition that combines polyol and polyisocyanate components with delusterants. This composite coating system integrates the properties of urethane polymers (durability, flexibility) with delusterant particles (matte effect) to achieve both aesthetic and performance requirements
2Illumination intensity
If the delusterant content is increased to enhance the matte appearance, then the gloss-free effect is improved, but the static coefficient of friction decreases
Solution Approach 1:
The patent resolves this contradiction by establishing an optimal parameter range for delusterant content (8-30 parts by weight per 100 parts by weight of coating solids) and particle size (0.1-20 μm average particle size). Within this optimized parameter space, the coating achieves sufficient matte appearance while maintaining adequate friction for spin performance
Solution Approach 2:
The patent applies local quality by specifying that the delusterant particles should have an average particle size of 0.1-20 μm, with preferred ranges of 0.2-10 μm and more preferably 0.5-5 μm. This controlled particle size distribution ensures that the surface has enough texture for matte appearance without creating excessive roughness that would harm friction
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 golf ball achieves a gloss-free matte appearance with enhanced spin performance on approach shots, balancing delustering and friction characteristics.
Implementation Method 1
a two-part curable urethane coating composition which has a polyol component and a polyisocyanate component
Data Source
AI summary
In a golf ball having a coating of one or more layer on a golf ball surface with numerous dimples thereon, at least one coating layer is formed of a two-part curable urethane coating composition which has a polyol component and a polyisocyanate component and contains silica and polyurethane as delusterants, the delusterant content being from 8 to 30 parts by weight per 100 parts by weight of coating solids. This golf ball exhibits a gloss-free appearance and has an excellent spin performance on approach shots.