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AssigneesMidori Hokuyo Co., Ltd., Honda Motor Co., Ltd.
InventorsShinji Kashiwagura, Masahiko Ogawa, Takashi Ono, Miwa Tada (Formerly Murakata), Yoshiyuki Ito, Masato Ishibashi, Takashi Yamaguchi
Estimating the term…
Provided is a natural leather having a novel coating layer which feels leathery. The coating film retains material properties such as strength and wearing resistance. When the user directly touches the natural leather, the coating layer present on the surface of the natural leather gives slick characteristics of natural leathers and smoothness. The natural leather has a coating film formed on a surface thereof, the coating film including: a color coat layer formed from a mixture of a hard component (10% modulus is more than 2.3 but no more than 3.0) and a soft component (10% modulus is more than 0.0 but no more than 1.0) of a two-component polyurethane resin; and a topcoat layer formed from a mixture of a medium component (resin having a 10% modulus of more than 1.0 but no more than 2.3) and a soft component (resin having a 10% modulus of more than 0.0 but no more than 1.0) of a two-component polyurethane resin.
A natural leather, characterized by being produced by obtaining a natural leather through a leather tanning step involving a tanning agent containing chromium or glutaraldehyde as well as steps for re-tanning, dyeing and greasing, and then forming on the surface of the natural leather, in this order, a pre coat, base coat, color coat layer constituted by mixing a hard component (a resin whose 10% modulus is over 2.3 but not more than 3.0) of a resin containing at least two-component polyurethane resin with a soft component (a resin whose 10% modulus is over 0.0 but not more than 1.0) of a resin containing at least two-component polyurethane resin, and top coat layer constituted by mixing a medium component (a resin whose 10% modulus is over 1.0 but not more than 2.3) of a resin containing at least two-component polyurethane resin with a soft component (a resin whose 10% modulus is over 0.0 but not more than 1.0) of a resin containing at least two-component polyurethane resin.
A tanned, dyed, greased natural leather having coating layers comprising:
The natural leather according to claim 14, wherein each resin containing at least two-component polyurethane resin is constituted by at least one two-component aliphatic polyurethane and optionally acrylic polymer-urethane polymer copolymer.
A method of manufacturing a surface-treated natural leather, comprising:
Dependencies are inferred from the claim text.