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Title:
METHOD FOR PRODUCING SPUN-BONDED NONWOVEN FABRIC AND SPUN-BONDED NONWOVEN FABRIC
Document Type and Number:
WIPO Patent Application WO/2012/105567
Kind Code:
A1
Abstract:
Provided are: a method for producing a spun-bonded nonwoven fabric having superior flexibility, having favorable drape including feel, and promoting bleedout of an additive; and a spun-bonded nonwoven fabric obtained by the production method. Specifically, provided are: (1) a method for producing a spun-bonded nonwoven fabric by means of annealing processing a spun-bonded nonwoven fabric formed using a crystalline resin composition (I) containing 1-50 mass% of a low-crystalline olefinic polymer (a) having a modulus of elasticity of 10-450 MPa, a high-crystalline olefinic polymer (b) (the amount of component (b) contained is the remaining portion) having a modulus of elasticity of 500-2000 MPa, and 1-20,000 mass ppm of an additive (c); (2) a method for producing a spun-bonded nonwoven fabric by means of annealing processing a spun-bonded nonwoven fabric formed using a core-sheath composite fiber having as the sheath component the crystalline resin composition (I), and having as the core component a crystalline resin composition (II) containing a high-crystalline olefininc polymer (b') having a modulus of elasticity of 500-2,000 MPa; and a spun-bonded nonwoven fabric obtained by the production methods.

Inventors:
KOORI YOHEI (JP)
TAKEBE TOMOAKI (JP)
MINAMI YUTAKA (JP)
Application Number:
PCT/JP2012/052161
Publication Date:
August 09, 2012
Filing Date:
January 31, 2012
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
KOORI YOHEI (JP)
TAKEBE TOMOAKI (JP)
MINAMI YUTAKA (JP)
International Classes:
D04H3/007; C08L23/00; C08L91/00; D04H3/147; D04H3/153; D06C7/00
Domestic Patent References:
WO2009001871A12008-12-31
Foreign References:
JP2010150732A2010-07-08
JP2005281951A2005-10-13
JPH10315327A1998-12-02
Other References:
See also references of EP 2671992A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
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Claims:



 
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