| 摘要 |
PCT No. PCT/GB93/01210 Sec. 371 Date Dec. 7, 1994 Sec. 102(e) Date Dec. 7, 1994 PCT Filed Jun. 8, 1993 PCT Pub. No. WO93/26016 PCT Pub. Date Dec. 23, 1993A 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 temperature 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 fibre in the form of a loop (4) blocked against flow of moisture by polypropylene and enclosed within non-tracking polyethylene electrically insulating material (6). |
