Core for racket string, racket string comprising such a core and corresponding manufacturing method

A core wire and string technology, which is used in the manufacture of stringed rackets, rackets, rayon, etc., can solve the problems that the method is difficult to industrialize and the core wire does not have strings.
CN102725035AInactive Publication Date: 2012-10-10BABOLAT VS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BABOLAT VS
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

This core (2) for a racket string, in particular for a tennis racket string, comprises a thermoplastic matrix (24) in which filaments (22) are embedded, at least one of these filaments being of natural origin and the thermoplastic matrix (24) being made of a material which, at a temperature lower than a threshold temperature, at which the filaments (22) are not substantially damaged, has a viscosity making it suitable for an extrusion process. The matrix (24) comprises a plurality of strands that are helically twisted in a first direction, each of the strands comprising a plurality of filaments (22) of natural origin that are helically twisted in a second direction, which is or is not opposite to the first direction.
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Description

Technical field

[0001] The present invention relates to a core wire for a string of a racket, more particularly a core wire for a string of a tennis racket, a string of a racket including the core wire, and a method of manufacturing the core wire. Background technique

[0002] Especially in the field of strings used in racket sports, in order to protect the environment as much as possible, people try to integrate natural materials into the strings. In addition, natural fibers such as silk are suitable for the mechanical strength of the strings used in tennis racquets and have better elasticity than synthetic fibers. For this reason, it is known that a plurality of silk fibers can be combined in one string. The silk-derived fibers of said type are completely natural.

[0003] A method is known from the document GB 600424, according to which, once a plurality of silk fibers are gathered together, the thread thus obtained will pass through an extrusion head provided with a thermopla...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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