Golf Ball Core Cover Material Design for Flight Distance and Hitting Sensation
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Solution Overview
Problem
Golf balls often face a trade-off between hitting sensation and flight distance, with existing balls either providing too hard a feel for long distances or insufficient spin for shorter, more controlled shots, making it difficult for players to balance performance and sensation.
Innovation Solution
A golf ball design featuring a core composed of butadiene rubber with a lower coefficient of restitution and a cover made of ionomer resin with a higher coefficient of restitution, along with specific additives and dimple patterns, to achieve a soft hitting sensation and increased flight distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a golf ball is designed for long distance flight, then flight distance is improved, but hitting sensation becomes too hard
Solution Approach 1:
The patent changes the material parameters of the core, specifically using rubber materials with a lower coefficient of restitution (COR) than conventional rubber alone. This parameter change allows the core to be softer while maintaining or improving flight distance through optimized elastic recovery characteristics
Solution Approach 2:
The patent employs composite materials in the core construction, combining rubber with polymer resin or elastomeric resin to create a multi-material core that achieves both softness for better hitting sensation and optimized flight distance performance
2Length of moving object
If a golf ball core uses rubber with high coefficient of restitution, then flight distance is improved, but hitting sensation becomes harder
Solution Approach 1:
The patent inverts the conventional approach by using rubber materials with lower COR values. This counterintuitive parameter change improves hitting sensation softness while flight distance is maintained through the composite material structure and optimized resin content (0.5 to 10 parts by weight of polymer resin per 100 parts rubber)
Solution Approach 2:
The patent converts what would traditionally be considered a disadvantage (lower COR of rubber) into a benefit by combining it with specific resin additives, thereby achieving softer hitting sensation while still maintaining adequate flight distance through the synergistic composite material system
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 provides an improved hitting sensation and enhanced flight distance while maintaining an existing manufacturing process, outperforming commercial balls in terms of spin rate, height, landing angle, and total flight distance.
Implementation Method 1
a rubber material constituting a core of a golf ball is controlled to have a lower coefficient of restitution (COR) than that of rubber alone
Implementation Method 2
a resin (ionomer) material constituting a cover of a golf ball is controlled to have a higher coefficient of restitution (COR) than that of rubber alone
Data Source
AI summary
The present invention relates to a golf ball and a method for manufacturing same. The golf ball may include a first pole, a second pole, and a seam located between the first pole and the second pole, and a section structure including an outer surface having a plurality of dimples, a core, and a cover surrounding the core. In certain embodiments, the core includes 100 parts by weight of a butadiene rubber and 0.5 to 10 parts by weight of a polymer resin. The cover may include 100 parts by weight of an ionomer resin and 1 to 10 parts by weight of a butadiene rubber having a 1,2-bond content of 90% or more.