Title:
SHEET-LIKE ARTICLE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2013/065608
Kind Code:
A1
Abstract:
Provided are: a sheet-like article like a leather or the like, which has both a flexible texture and good wrinkle recovery (i.e., wrinkle-free) properties and also has high durability; a method for producing the sheet-like article; and a method for producing a sheet-like article, which does not require the use of any organic solvent in the process of producing the sheet-like article and is therefore environment-friendly. The sheet-like article comprises: a fibrous base material comprising microfibers having an average single fiber diameter of 0.3-7 μm; and a water-dispersed polyurethane contained in the inside of the fibrous base material. A portion of the water-dispersed polyurethane is adhered dominantly onto the outer periphery of the microfiber bundles and contains a substance having an amide bond. The remaining portion of the water-dispersed polyurethane, which does not adhered dominantly onto the outer periphery of the microfiber bundles, contains a polycarbonate-type polyurethane. The method for producing a sheet-like article comprises: applying a water-dispersed polyurethane solution containing a foaming agent onto a fibrous base material that comprises fibers capable of developing microfibers; then developing microfibers having an average single fiber diameter of 0.3-7 μm from the fibers capable of developing microfibers; and then applying a water-dispersed polycarbonate-type polyurethane solution onto the resultant microfibers.
Inventors:
KOIDE GEN (JP)
NAKAI SHUNICHIRO (JP)
MATSUZAKI YUKIHIRO (JP)
NISHIMURA MAKOTO (JP)
NAKAI SHUNICHIRO (JP)
MATSUZAKI YUKIHIRO (JP)
NISHIMURA MAKOTO (JP)
Application Number:
PCT/JP2012/077767
Publication Date:
May 10, 2013
Filing Date:
October 26, 2012
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D06N3/14; D06M15/564; D06M15/568; D06M15/643; D06M23/04
Domestic Patent References:
| WO2011114956A1 | 2011-09-22 |
Foreign References:
| JP2011069019A | 2011-04-07 | |||
| JP2007119749A | 2007-05-17 | |||
| JP2009228187A | 2009-10-08 | |||
| JP2008081916A | 2008-04-10 | |||
| JP2000297211A | 2000-10-24 | |||
| JP2000290879A | 2000-10-17 |
Attorney, Agent or Firm:
IWATANI, Ryo (JP)
Tatsu Iwatani (JP)
Tatsu Iwatani (JP)
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Claims: