Title:
COMPOSITE LONG-FIBER NON-WOVEN FABRIC USING ECCENTRIC SHEATH/CORE COMPOSITE FIBERS AT ONE OR BOTH SURFACES
Document Type and Number:
WIPO Patent Application WO/2019/146726
Kind Code:
A1
Abstract:
Provided is a long-fiber non-woven fabric that: is suitable for a top-sheet or back-sheet part of an absorbent article that is to be used in a sanitary material; achieves both high strength and a bulkiness that provides a cushioning softness; has surface characteristics that can be suitably utilized in sanitary materials; and has excellent processability. The present invention relates to a composite long-fiber non-woven fabric that uses, at one or both surfaces, an eccentric sheath/core long-fiber non-woven fabric that comprises eccentric sheath/core composite fibers that include at least two types of thermoplastic resin, the composite long-fiber non-woven fabric being characterized in that the eccentric sheath/core composite fibers have perfectly circular cross-sections and are configured from an elliptical high-melting-point component core part and a low-melting-point component sheath part, in that 100% of the surface of the fibers is covered by the low-melting-point component sheath parts, in that the sheath parts that cover the core parts are 100–500 nm thick at 30%–60% of the surface of the fibers, and in that the thickest portion of the sheath parts is at least 25% of the radius of the fibers. The present invention also relates to a sanitary material that uses the composite long-fiber non-woven fabric.
Inventors:
IKEDA SHOGO (JP)
FUJII AKIHIRO (JP)
ZEISHO KAZUYA (JP)
YAHANASHI MASAHIRO (JP)
TANAKA SAORI (JP)
FUJII AKIHIRO (JP)
ZEISHO KAZUYA (JP)
YAHANASHI MASAHIRO (JP)
TANAKA SAORI (JP)
Application Number:
PCT/JP2019/002363
Publication Date:
August 01, 2019
Filing Date:
January 24, 2019
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D04H3/147; A61F13/15; A61F13/511; A61F13/514; A61L15/24; D01F8/04
Domestic Patent References:
| WO2018110523A1 | 2018-06-21 |
Foreign References:
| JPS4930623A | 1974-03-19 | |||
| JP2009046785A | 2009-03-05 | |||
| US20170145602A1 | 2017-05-25 | |||
| JPH03193915A | 1991-08-23 | |||
| JPS5285512A | 1977-07-15 | |||
| JP2017179653A | 2017-10-05 | |||
| CN104562233A | 2015-04-29 | |||
| US20050133948A1 | 2005-06-23 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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