Title:
POLYESTER STAPLE FOR WET TYPE NONWOVEN FABRIC HAVING LATENT CRIMPING DEVELOPMENT AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3389968
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject staple for providing elastic nonwoven fabric having latent crimping development, light weight and excellent elongation recovery, by spinning a specific polyester A and a prescribed polyester B under specified conditions.
SOLUTION: This staple comprises a side by side type or an eccentric core- sheath type fiber comprising a polyester A composed of a polypropylene terephthalate as a main component and a polyester B composed of a polyethylene terephthalate as a main component and is obtained by melting the components so as to make the ratio of the polyester A to the polyester B of 30/70 to 70/30 by weight at a temperature 10-30°C higher than the melting point of each component, subjecting the polymers to the melt conjugate spinning in a side by side type or eccentric sheath core type, heat-treating the yarn in tension at 100-190°C treatment temperature in a drawing process, providing the yarn with an finishing oil, cutting the yarn into 2-100 mm length to give the a polyester staple for wet type nonwoven fabric satisfying equations 1 and II [μ (W) is a friction coefficient between fibers in wetness; μ (D) a friction coefficient between fibers in dryness].
Inventors:
Tomoyuki Aranaga
Hideo Isoda
Hideo Isoda
Application Number:
JP32479797A
Publication Date:
March 24, 2003
Filing Date:
November 26, 1997
Export Citation:
Assignee:
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
D02J1/22; D01D5/34; D01F8/14; D04H1/28; D04H1/435; D06M15/53; D21H13/24; D21H15/10; D06M101/32; (IPC1-7): D01F8/14; D06M15/53; D21H13/24; D21H15/10
Domestic Patent References:
| JP5196550A | ||||
| JP978356A | ||||
| JP1181048A | ||||
| JP1193021A |