Eco-friendly automotive interior part and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-2023092011-A1
Application number	US-202217901449-A
Country	US
Kind code	A1
Filing date	Sep 1, 2022
Priority date	Sep 10, 2021
Publication date	Mar 23, 2023
Grant date	—

Abstract

Proposed are an eco-friendly automotive interior part, a method of manufacturing the same, and a method of designing the same automotive interior part. The automotive interior part can not only optimally correct physical properties thereof using manufacturing and design methods, but also have eco-friendliness by significantly reducing harmfulness to the human body due to the minimized use of chemicals, while realizing natural wrinkles resembling those of natural leather.

First claim

What is claimed is:

1 . An automotive interior part comprising:
a regeneration composite layer including a regeneration layer and a physical property reinforcing layer disposed on the regeneration layer; a skin layer disposed on the physical property reinforcing layer of the regeneration composite layer; and a surface-modifying layer disposed on the skin layer.

2 . The automotive interior part of claim 1 , wherein the regeneration layer is a layer in which natural leather staple fibers and synthetic fibers are entangled with each other.

3 . The automotive interior part of claim 2 , wherein the natural leather staple fibers and synthetic fibers are mixed in a weight ratio of 60 to 99:1 to 40.

4 . The automotive interior part of claim 1 , wherein the physical property reinforcing layer comprises at least one fiber selected from the group consisting of nylon, PET, PTT, PP, TC, linol, and cotton.

5 . The automotive interior part of claim 1 , wherein the physical property reinforcing layer has at least one structure selected from the group consisting of woven fabric, nonwoven fabric, warp knit fabric, and circular knit fabric.

6 . The automotive interior part of claim 1 , wherein the regeneration layer has a thickness in a range of 0.5 mm to 2.0 mm, and the physical property reinforcing layer has a thickness in a range of 0.1 mm to 3.0 mm.

7 . The automotive interior part of claim 1 , wherein the regeneration composite layer has a thickness in a range of 0.6 mm to 5.0 mm.

8 . The automotive interior part of claim 1 , wherein the skin layer comprises at least one material selected from the group consisting of water-dispersible polyurethane (PU), solvent-free high solids, solvent-free polyurethane (PU), solvent-type polyurethane (PU), acrylic polyurethane resin, thermoplastic polyurethane (TPU), and silicone.

9 . The automotive interior part of claim 1 , wherein the skin layer has a thickness in a range of 0.01 mm to 0.5 mm.

10 . The automotive interior part of claim 1 , wherein the surface-modifying layer comprises a polyurethane resin and a gloss control agent.

11 . The automotive interior part of claim 1 , wherein a wet application amount of the surface-modifying layer is equal to or less than 3.0 g/ft 2 .

12 . The automotive interior part of claim 1 , wherein the automotive interior part is used for at least one purpose selected from the group consisting of automotive seats, door trims, consoles, crush pads, and steering wheels.

13 . A method of manufacturing an automotive interior part, the method comprising:
preparing a regeneration layer; preparing a regeneration composite layer by laminating a physical property reinforcing layer on the regeneration layer; preparing an initial skin layer on release paper; preparing a laminate including a skin layer by laminating, on the physical property reinforcing layer of the regeneration composite layer, the initial skin layer on the release paper, followed by performing curing; removing the release paper; and coating a surface-modifying layer on the skin layer of the laminate.

14 . The method of claim 13 , wherein the preparing of the regeneration layer comprises:
preparing an initial regeneration layer by entangling natural leather staple fibers and polyester fibers with each other; performing primary drying to primarily remove moisture from the initial regeneration layer; removing hexavalent chromium from the initial regeneration layer from which moisture has been primarily removed; and performing secondary drying to secondarily remove moisture from the initial regeneration layer from which chromium has been removed.

15 . The method of claim 13 , wherein the initial skin layer has a thickness in a range of 0.01 mm to 0.5 mm.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• H Blue Ltd
• Dae Won Chemical Co Ltd

Inventors

• Lee Myoung Ryoul
• Eom Gi Cheon
• Rhim Young Kyu
• Shin Woo Seung

Classifications

• B32B2262/14

  Mixture of at least two fibres made of different materials · CPC title

• B32B2605/003

  Interior finishings · CPC title

• B32B2262/08

  Animal fibres, e.g. hair, wool, silk · CPC title

• B32B2262/0261

  Polyamide fibres · CPC title

• B32B2262/0284

  Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT] · CPC title