Micro staple fiber nonwoven fabric and leather-like article in sheet form, and method for their production
AssigneeToray Industries, Inc.
InventorsTomoyuki Horiguchi, Kyoko Yokoi, Kentaro Kajiwara
Life of this patent
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Abstract
To provide a nonwoven fabric containing ultra-fine fibers suitable as a leather-like sheet, and also a leather-like sheet with an excellent compactness. A nonwoven fabric containing ultra-fine fibers, characterized in that it contains staple fibers with a fiber fineness of 0.0001 to 0.5 decitex and a fiber length of 10 cm or less, and has a weight per unit area of 100 to 550 g/m2, an apparent density of 0.280 to 0.700 g/cm3, a tensile strength of 70 N/cm or more, and a tear strength of 3 to 50 N.
Claims21
1-28. (canceled)
A nonwoven fabric containing ultra-fine fibers, which contains staple fibers with a fiber fineness of 0.0001 to 0.5 decitex and a fiber length of 10 cm or less, and has a weight per unit area of 100 to 550 g/m2, an apparent density of 0.280 to 0.700 g/cm3, a tensile strength of 70 N/cm or more, and a tear strength of 3 to 50 N.
A leather-like sheet comprising a nonwoven fabric and made of a fiber material of substantially a non-elastic polymer.
A leather-like sheet which contains a dyed nonwoven fabric containing ultra-fine fibers with a fiber fineness of 0.0001 to 0.5 decitex, a fiber length of 10 cm or less, a weight per unit area of 100 to 550 g/m2 and an apparent density of 0.230 to 0.700 g/cm3, and has a tear strength of 3 to 50 N and satisfies the following formula:
- Tensile strength (N/cm)≧0.45×Weight per unit area (g/m2)−40.
Dependencies are inferred from the claim text.