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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 (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
FUJII, Akihiro (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
ZEISHO, Kazuya (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
YAHANASHI, Masahiro (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
TANAKA, Saori (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
Application Number:
JP2019/002363
Publication Date:
August 01, 2019
Filing Date:
January 24, 2019
Export Citation:
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Assignee:
ASAHI KASEI KABUSHIKI KAISHA (1-1-2 Yurakucho, Chiyoda-ku Tokyo, 06, 〒1000006, JP)
International Classes:
D04H3/147; A61F13/15; A61F13/511; A61F13/514; A61L15/24; D01F8/04
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
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