Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including interlaminar mechanical fastener
Patent
1980-06-13
1982-11-02
Kimlin, Edward C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including interlaminar mechanical fastener
428395, 152358, 152359, 156110C, 57902, 525439, 525444, 139420A, 260 457R, 260 458R, B60C 900, D03D 1500, B32B 2736, D01F 692
Patent
active
043573851
ABSTRACT:
A thermally improved polyester weft yarn is provided by melt-spinning a blend of a polyethylene terephthalate polymer and a small amount of polymer having a glass transition temperature of at least 10.degree. C. higher than that of the polyethylene terephthalate polymer. The yarn has a break elongation of 70% to 200% and a dry heat shrinkage of +5% to -2%, and is capable of withstanding a severe heat-treatment, for example, at 245.degree. C. for 2 minutes during dipping and curing process of a tire cord fabric comprising the same. Even after such heat-treatment, the yarn shows a residual break elongation of more than 60%. Thus, the weft yarn extends uniformly, without breakage, to a toroidal shape during a tire building process, keeping warp cords at a equi-distance relation. A tire cord fabric comprising the weft yarn of the invention finds its use as the carcass in the form of single ply in a radial tire.
REFERENCES:
patent: 3563847 (1971-02-01), Rye et al.
patent: 4196763 (1980-04-01), Imamura
Iohara Koh-ichi
Ishii Seiji
Kumakawa Shiro
Kuroda Toshimasa
Boland Lois E.
Kimlin Edward C.
Teijin Limited
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