| 摘要 |
1504597 Yarn of intertwined continuous and broken filaments: process for making TORAY INDUSTRIES INC 16 April 1975 [22 April 1974 3 Feb 1975] 15665/75 Headings D1F and D1W A yarn comprises a fibre bundle substatially free from true twists and consists of continuous and discontinuous filaments complexly interwined with one another, the filaments including random bends and loops. Free ends and bent and looped filaments protrude from the bundle, and some filaments are partially and randomly wrapped around the bundle. The yarn, Fig. 1, may have a parameter S not less than 0.5, preferably not less than 1.0 and a parameter R not more than 0.1, the parameters being measured in a 10mm sample cut from yarn under 500mg/ denier load, S being defined as the number of fibres of length # 12mm, < 30mm divided by the number of fibres of length # 10mm, < 12mm, and R being the number of fibres of length # 30mm divided by the number of fibres in the sample. The filaments may be made from one or more polyesters, polyamides, polyacrylics and novolac - polyamide resins. Blends of synthetic and natural fibres may be used. The yarn may be formed by extruding continuous filaments from spinner 10, Fig. 2 stretching the filaments in pneumatic ejector 12, preferably applying fluid jets to the ejected filaments to increase the projecting filament bends or loops, preferably impinging the filaments on deflector plates 21, and receiving the filaments on perforate conveyor 24 above suction box 25. The conveyor may be formed by a perforate rotating drum or rotor. The conveyor carries ribbon-shaped bundle 23 of continuous, randomly bent and looped, interconnected filaments to fluid false twister 50, where, e.g. two or more inclined tangential jets of fluid, e.g. cold air, hot air or steam, false twist the ribbon and break some of the filaments. The yarn may be heated at 40 and oiled at 41. The ejector may be as shown in Figs. 4 and 5, having air inlets 13 or 19, and the false twister may be as shown in Fig. 6, having air inlet 51 and air passage 54 inclined at an angle # equals 30‹ to 60‹.
|
