Textiles: spinning – twisting – and twining – Strand structure – Covered or wrapped
Patent
1992-07-30
1994-07-12
Raymond, Richard L.
Textiles: spinning, twisting, and twining
Strand structure
Covered or wrapped
57 35, 57 13, 273 73R, 273DIG6, D02G 306, A63B 5102
Patent
active
053277147
ABSTRACT:
A string for sports application, in particular for tennis, badminton, racquetball and squash racquets or the like comprises a center core and at least one ribbon-like wrap made of a highly abrasion resistant material which exhibits a higher melting point and at least one of a higher dynamic stiffness and a lower static stiffness than the core material. A preferred wrap material meeting the above criteria is poly(m-phenylene isophthalamide). The wrap should cover at least 25%, and preferably at least 50% of the center core's outer surface to reduce notching. Due to the reduced notching, superior combined properties of durability, playability and minimal loss of string tension are achieved.
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Holland David T.
Stevens Kenneth A.
Lamblin Deborah
Prince Manufacturing, Inc.
Raymond Richard L.
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