Title:
COMPOSITE NONWOVEN FABRIC
Document Type and Number:
Japanese Patent JP3236119
Kind Code:
B2
Abstract:
PURPOSE: To obtain a composite nonwoven fabric having excellent water- pressure resistance, air-permeability and strength and high flexibility and suitable as a material for medical and sanitary use, filter, interior material, interlining cloth and wiper material by laminating a short-fiber nonwoven fabric and a long-fiber nonwoven fabric and integrating the nonwoven fabrics by interlocking.
CONSTITUTION: A short-fiber nonwoven fabric having an areal density of 10-50g/m2 and an average fiber orientation degree of 2.0-10 and satisfying the formula 1/9<a/b≤4/3 ((a) is ratio of short fiber of ≤0.3de and (b) is ratio of short fiber of ≥0.5de) is produced from polyester short fibers of ≤0.3 de and rayon short fibers of ≥0.5de. The obtained short-fiber nonwoven fabric is laminated to a long-fiber nonwoven fabric produced by partially bonding long fibers with each other. The objective composite nonwoven fabric is produced by applying a columnar flow to the laminate to effect the interlocking and integration of both nonwoven fabrics by the intrusion of ≤20 short fibers constituting the short-fiber nonwoven fabric into ≥1/2 of the thickness of the long-fiber nonwoven fabric based on a length of 500μm.
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Inventors:
Minoru Fukui
Middle East Toshiko
Middle East Toshiko
Application Number:
JP9753393A
Publication Date:
December 10, 2001
Filing Date:
April 23, 1993
Export Citation:
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
D04H1/492; D04H1/498; D04H5/00; D04H5/08; (IPC1-7): D04H5/08; D04H1/46; D04H5/00
Domestic Patent References:
JP161555A | ||||
JP197257A | ||||
JP1111056A | ||||
JP63211354A | ||||
JP2169236A | ||||
JP4333652A | ||||
JP3130445A | ||||
JP5212803A |
Attorney, Agent or Firm:
Takenaga Kawakita
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