STRING FOR USE IN A RACKET
DE602021038619T2Active Publication Date: 2025-09-17SUMITOMO RUBBER INDUSTRIES LTD
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Patent Information
- Application Number
- DE602021038619
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-05-11
- Filing Date
- 2021-04-20
- Publication Date
- 2025-09-17
- Estimated Expiration
- 2041-04-20
AI Technical Summary
Technical Problem
Existing racket strings, particularly those made of synthetic resin, lack an optimal balance between hitting feeling and durability, with polyester strings being too hard and nylon strings still not replicating the softness of natural gut, while natural gut is expensive and less durable.
Method used
Irradiate untreated strings made of thermoplastic resin, preferably polyester or nylon, with gamma rays in the range of 250 to 2000 kGy to enhance elongation rates and improve hitting feeling without compromising durability.
Benefits of technology
The irradiated strings achieve a balance of excellent hitting feeling and durability, approaching the softness of natural gut while maintaining structural integrity, suitable for various sports like tennis, squash, and badminton.
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