Sheet-like material
AssigneeToray Industries, Inc.
InventorsTatsuya Hagiwara, Shunichi Miyahara, Akihiro Tanabe, Makoto Nishimura
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Abstract
A sheet material includes a polymeric elastomer and a fiber-entangled body including, as a constituent element, a nonwoven fabric including ultrafine fibers having an average single fiber diameter of 1.0 μm or more and 10.0 μm or less. The ultrafine fibers include a polyester-based resin including a black pigment (a1). The black pigment (a1) has an average particle diameter of 0.05 μm or more and 0.20 μm or less and has a coefficient of variation (CV) of the average particle diameter of 75% or less. The polymeric elastomer includes a polyurethane including a black pigment (b). The sheet material has a nap coverage of 70% or more and 100% or less on a surface having a nap.
Claims9
A sheet material comprising a polymeric elastomer and a fiber-entangled body comprising, as a constituent element, a nonwoven fabric comprising ultrafine fibers having an average single fiber diameter of 1.0 μm or more and 10.0 μm or less, wherein:
- the ultrafine fibers comprise a polyester-based resin comprising a black pigment (a1);
- the black pigment (a1) has an average particle diameter of 0.05 μm or more and 0.20 μm or less and has a coefficient of variation (CV) of particle diameter of 30% or more and 75% or less;
- the polymeric elastomer comprises a polyurethane comprising a black pigment (b);
- the black pigment (b) has an average particle diameter of 0.05 μm or more and 0.20 μm or less and has a coefficient of variation (CV) of particle diameter of 30% or more and 75% or less;
- the sheet material has a nap coverage of 70% or more and 90% or less on a surface having a nap;
- and
- the sheet material has a nap length on the surface of 250 μm or more and 450 μm or less.
Dependencies are inferred from the claim text.