Ionomer Polyethylene Golf Ball Composition Durability Resilience
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Solution Overview
Problem
Current golf ball compositions primarily using ionomer resins lack sufficient improvements in resilience and durability while maintaining initial velocity and softness.
Innovation Solution
A golf ball composition comprising an ionomer resin blend of olefin-unsaturated carboxylic acid random copolymers, metal ion neutralization products, polyethylene, and organic peroxides, where the ratio of specific differential scanning calorimeter peaks is controlled to enhance compatibility and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ionomer resins are used as the primary base resin in golf ball cover materials, then durability and scuff resistance are improved, but resilience and rebound properties are insufficient
Solution Approach 1:
The patent creates a composite material system combining ionomer resin with polyethylene and rubbery elastomer. The ionomer resin provides durability and scuff resistance, while the polyethylene and rubbery elastomer components contribute resilience and rebound properties. This composite approach allows the golf ball cover to simultaneously achieve both durability and resilience that neither material could provide alone.
2Strength
If thermoplastic resin or thermoplastic elastomer is mixed into ionomer material to improve moldability and resilience, then resilience and moldability are improved, but durability and scuff resistance deteriorate
Solution Approach 1:
The patent carefully controls the composition parameters by limiting thermoplastic resin to 5-30 parts by weight and thermoplastic elastomer to 5-30 parts by weight per 100 parts of ionomer resin. This precise parameter control ensures that resilience and moldability are improved while maintaining the durability and scuff resistance provided by the ionomer resin base.
3Ease of manufacture
If multiple resin components are combined to achieve excellent moldability and resilience, then moldability and resilience are improved, but the composition complexity increases
Solution Approach 1:
The patent assigns specific functional roles to each component: ionomer resin for durability and scuff resistance, polyethylene for resilience and moldability, and rubbery elastomer for rebound properties. This functional differentiation allows each component to optimize its local contribution while maintaining overall composition manageability through clear role definition.
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 composition significantly improves the golf ball's resilience and durability, maintaining rebound and preventing cracking, with specific conditions ensuring effective ionomer and polyethylene compatibility.
Implementation Method 1
compounding: (A) one or more ionomer selected from the group consisting of an olefin-unsaturated carboxylic acid random copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, and a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer; (B) a polyethylene; and (C) an organic peroxide
Implementation Method 2
letting Pi be the surface area of a peak that appears in the range of 43 to 56° C. when measuring the resin composition with a differential scanning calorimeter and Pz be the surface area of a peak that appears in the range of 43 to 56° C. when measuring the same resin composition, exclusive of component (C), with a differential scanning calorimeter
Data Source
AI summary
The invention provides a golf ball composition containing an ionomer resin composition of: (A) one or more ionomer selected from the group consisting of an olefin-unsaturated carboxylic acid random copolymer and/o2r an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, and a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer; (B) a polyethylene; and (C) an organic peroxide.