Method for manufacting hybrid-nature leather having excellent apprearance quality and durability

Patent metadata

Field	Value
Publication number	US-2018117877-A1
Application number	US-201715439744-A
Country	US
Kind code	A1
Filing date	Feb 22, 2017
Priority date	Nov 3, 2016
Publication date	May 3, 2018
Grant date	—

Abstract

A method for manufacturing hybrid-natural leather having excellent appearance quality and good durability such as light resistance, water resistance, elongation and abrasion resistance is provided. Particularly, the fiber layer having a similar structure to the natural leather is introduced to the natural leather and the natural leather and the fiber layer are bonded and fused with each other under a specific condition to manufacture hybrid-natural leather having excellent durability while preventing wrinkles, stretching, and the like from being generated.

First claim

What is claimed is:

1 . A method for manufacturing hybrid-natural leather, comprising:
(1) a bonding step of forming a laminate of a leather layer and a fiber layer; and (2) a fusing step of integrating the leather layer and the fiber layer by coating a fusion composition on the fiber layer and then applying heat and pressure to the laminate.

2 . The method for manufacturing hybrid-natural leather of claim 1 , wherein the leather layer is natural leather, and the fiber layer is formed by polyethylene terephthalate (PET).

3 . The method for manufacturing hybrid-natural leather of claim 1 , wherein a thickness of the fiber layer is 0.01 mm to 0.2 mm.

4 . The method for manufacturing hybrid-natural leather of claim 1 , wherein before step (1), at least one of a tanning process, a dyeing process, and a branching process is performed with respect to the leather layer.

5 . The method for manufacturing hybrid-natural leather of claim 1 , further comprising:
after step (2), (3) a surface-treating step of forming sequentially a base painting layer, a color coating layer, and a top coating layer on the laminate.

6 . The method for manufacturing hybrid-natural leather of claim 5 , wherein the base painting layer is formed by a method of coating a base paint composition comprising 14 wt % to 20 wt % of a filler, 7 wt % to 13 wt % of an acrylic resin, and 60 wt % to 80 wt % of polyurethane on the laminate.

7 . The method for manufacturing hybrid-natural leather of claim 5 , wherein the color coating layer is formed by a method of coating a color coating composition comprising 13 wt % to 19 wt % of a filler, 7 wt % to 13 wt % of an acrylic resin, and 62 wt % to 72 wt % of polyurethane on the base painting layer.

8 . The method for manufacturing hybrid-natural leather of claim 5 , wherein the top coating layer is formed by a method of coating a top coating composition comprising 8 wt % to 10 wt % of matt polyurethane, 40 wt % to 60 wt % of polyurethane, 5 wt % to 9 wt % of water-soluble silicon, 8 wt % to 12 wt % of an acrylic resin, 5 wt % to 9 wt % of a cross linker, and 2 wt % to 4 wt % of a sunscreen agent on the color coating layer.

9 . The method for manufacturing hybrid-natural leather of claim 5 , wherein in step (3), embossing for the laminate is performed before forming the color coating layer after forming the base painting layer.

10 . The method for manufacturing hybrid-natural leather of claim 9 , wherein the embossing is performed at a temperature of 150° C. to 170° C. and pressure of 150 kg/cm 2 to 170 kg/cm 2 .

11 . The method for manufacturing hybrid-natural leather of claim 1 , wherein the step (1) is a step of forming the laminate by applying a curable composition between the leather layer and the fiber layer by a dot method.

12 . The method for manufacturing hybrid-natural leather of claim 11 , wherein the curable composition is transferred to the leather layer or the fiber layer.

13 . The method for manufacturing hybrid-natural leather of claim 1 , wherein the step (2) includes coating a fusion composition including 75 wt % to 95 wt % of a filler, 7 wt % to 13 wt % of an acrylic resin binder, and 3 wt % to 7 wt % of an urethane binder, and applying a temperature of 100° C. to 120° C. and pressure of 100 kg/cm 2 to 120 kg/cm 2 .

Assignees

• Hyundai Motor Co Ltd

Inventors

• Yun Mi Jung
• Lee Hye Min
• Kang Gun
• Jung Soon Joon
• Lee Jang Won
• Lee Hak Nam
• Lee Doo Yong
• Kim Sang Hyun

Classifications

• B32B9/047

  made of fibres or filaments · CPC title

• B32B9/025 Primary

  comprising leather · CPC title

• B32B2307/546

  Flexural strength; Flexion stiffness · CPC title

• B32B2307/4026

  within the layer by addition of a colorant, e.g. pigments, dyes · CPC title

• B32B27/12

  next to a fibrous or filamentary layer · CPC title