Artificial leathers
AssigneeToa Nenryo Kogyo Kabushiki Kaisha
InventorsShigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
Life of this patent
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Abstract
An artificial leather is made by impregnating a special nonwoven web substrate with an elastic polymer material. In another embodiment the substrate comprises a nonwoven fabric laminated to a woven or nonwoven fabric.
Claims21
An artificial leather comprising a nonwoven fabric and a polymer filling the interstices of said nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said nonwoven fabric or a part thereof and the other surface or a part thereof.
An artificial leather comprising a polyurethane supported in a nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers having a diameter of about 0.1 to about 30 microns, forming thin intertwined layers extending between one surface or part thereof and the other surface of said nonwoven fabric or part thereof, said polyurethane being present in the amount of about 5 to about 150% by weight based on the weight of the nonwoven fabric, said nonwoven fabric having a basis weight of about 5 to about 2,000 g/m.sup.2 and a thickness of about 0.5 to about 100 mm.
An artificial leather comprising a polymer supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof.
An artificial leather comprising a polyurethane supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof, said polyurethane being present in the amount of from about 5 to about 15% by weight based on the weight of latter mentioned nonwoven fabric, said latter mentioned nonwoven fabric being formed of fibers having a diameter of about 0.1 to about 30 microns, the said fabric having a basis weight of about 5 to about 2,000 g/m.sup.2 and a thickness of about 0.5 to about 100 mm, said woven fabric or first mentioned nonwoven fabric having a basis weight of 5 to 200 g/m.sup.2.
Dependencies are inferred from the claim text.