Insulators

Details Insulators Insulators

H - Electricity

01

B

H01B 19/00 (2006.01) B29C 70/34 (2006.01) B29C 70/46 (2006.01) B29C 70/86 (2006.01) H01B 17/12 (2006.01)

Patent

CA 2136995

A composite article is formed from yarn, comprising high strength fibres and fusible blocking material, and outer fusible material. The yarn is formed into its required shape and placed in a mould. The outer fusible material is introduced into the mould and its temperature is raised so as to melt the lower-melt temperature blocking fibres of the yarn. Under the action of tem- perature and pressure in the mould, the blocking material fuses so as to fill any interstices between the strength fibres, and the yarn is enclosed within the outer fusible material. The method is useful for forming electrical insulators of high strength glass fi- bre in the form of a loop (4) blocked against flow of moisture by polypropylene and enclosed within non-tracking polyethylene electrically insulating material (6).

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