Automobile interior material and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2025319692-A1
Application number	US-202418943696-A
Country	US
Kind code	A1
Filing date	Nov 11, 2024
Priority date	Apr 11, 2024
Publication date	Oct 16, 2025
Grant date	—

Abstract

Provided is an automobile interior material comprising a non-woven fabric base layer, an acrylic resin coating layer, a print layer with a predetermined pattern, a transparent film layer made of thermoplastic polyurethane resin (TPU), and a transparent adhesive layer. Both the film and adhesive layers have a total light transmittance of 90% or more and a haze value between 70% and 80%. The material may include perforations for air bubble removal and enhanced sound absorption, with the film layer featuring protruding and depressed parts. The manufacturing method involves forming these layers, printing the pattern, applying the adhesive, adhering the film, and perforating to remove air bubbles.

First claim

What is claimed is:

1 . An automobile interior material comprising:
a base layer comprising a non-woven fabric; a coating layer disposed on the base layer and comprising acrylic resin; a print layer disposed on the coating layer and comprising a predetermined pattern printed thereon; a film layer disposed on the print layer, and an adhesive layer provided between the print layer and the film layer, wherein each of the film layer and the adhesive layer has transparency.

2 . The automobile interior material of claim 1 , further comprising:
a perforation penetrating the film layer and the adhesive layer, wherein the perforation comprises about 1,000 perforations or more and about 10,000 perforations or less per 1 m 2 on a basis of the film layer.

3 . The automobile interior material of claim 2 , wherein the perforation has a diameter of about 850 μm or less.

4 . The automobile interior material of claim 1 , wherein the film layer comprises a plurality of protruding parts protruding from a surface of the film layer, and a depressed part arranged between the plurality of protruding parts.

5 . The automobile interior material of claim 4 , further comprising:
a perforation penetrating the film layer and the adhesive layer, wherein the perforation is formed on each of the plurality of protruding parts.

6 . The automobile interior material of claim 1 , wherein each of the adhesive layer and the film layer has a haze value of about 70% or more and about 80% or less measured by a haze meter.

7 . A manufacturing method of an automobile interior material, the method comprising:
forming a base layer through fiber coupling processing; forming a coating layer by coating one surface of the base layer with an emulsion; forming a print layer by printing a predetermined pattern on a top of the coating layer; applying an adhesive layer on a top of the print layer; adhering a film layer on a top of the adhesive layer; and removing air bubbles by perforating the film layer and the adhesive layer.

8 . The method of claim 7 , wherein in the removing, a pattern of depressed and protruding parts is formed on a surface of the film layer while perforating the film layer and the adhesive layer.

9 . The method of claim 8 , wherein in the removing, the surface of the film layer is in contact with a forming roller comprising perforating protrusions and patterning protrusions formed on an outer circumference thereof, so that the film layer and the adhesive layer are perforated, and the pattern of depressed and protruding parts is formed on the surface of the film layer.

10 . The method of claim 9 , wherein in the removing, a guide roller arranged prior to the forming roller is heated to a predetermined temperature by a temperature controller and heats the film layer and the adhesive layer while transporting the film layer and the adhesive layer.

11 . An automobile interior material comprising:
a base layer comprising a non-woven fabric; a coating layer disposed on the base layer and comprising; a print layer disposed on the coating layer and comprising a predetermined pattern printed thereon; a film layer disposed on the print layer, wherein the film layer comprises thermoplastic polyurethane resin (TPU); and an adhesive layer provided between the print layer and the film layer, wherein each of the film layer and the adhesive layer has transparency, having a total light transmittance Tt of about 90% or more and a haze value of about 70% or more and about 80% or less.

12 . The automobile interior material of claim 11 , wherein the emulsion is selected from the group consisting of nylon, acryl, styrene, polyvinylchloride, polyvinyl alcohol, polyester, ethylenevinylchloride, ethylene vinyl acetate, and polyurethane.

13 . The automobile interior material of claim 11 , further comprising:
a perforation penetrating the film layer and the adhesive layer, wherein the perforation comprises about 1,000 perforations or more and about 10,000 perforations or less per 1 m 2 on a basis of the film layer.

14 . The automobile interior material of claim 11 , wherein the film layer comprises a plurality of protruding parts protruding from a surface of the film layer, and a depressed part arranged between the plurality of protruding parts.

15 . The automobile interior material of claim 14 , further comprising:
a perforation penetrating the film layer and the adhesive layer, wherein the perforation is formed on each of the plurality of protruding parts.

16 . The automobile interior material of claim 11 , wherein each of the adhesive layer and the film layer has a haze value of about 70% or more and about 80% or less measured by a haze meter.

17 . The automobile interior material of claim 11 , wherein the print layer is printed by rotary screen printing.

18 . The automobile interior material of claim 11 , wherein the coating layer further comprises an additive selected from the group consisting of a penetrant, a thickener, and an antifoaming agent.

19 . The automobile interior material of claim 11 , wherein the non-woven fabric of the base layer is formed by carding or cross-webbing thin fibers to form a web of about 3 to about 10 layers, and coupling the layers to each other by needle punching or pressing.

20 . A vehicle comprising the automobile interior material of claim 1 .

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Korea Vilene Co Ltd

Inventors

• Jeon Hong Chan
• Kim Seong Je
• Jung Yong Kgil
• Jung Se Young
• Kang Jong Oh

Classifications

• B32B2307/412

  Transparent · CPC title

• B32B2038/047

  Perforating · CPC title

• B32B2037/243

  Coating · CPC title

• B32B2255/26

  Polymeric coating · CPC title

• B32B2255/02

  on fibrous or filamentary layer · CPC title