Invention Grant
- Patent Title: Composite structure for airbag cover
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Application No.: US17621936Application Date: 2020-07-13
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Publication No.: US11752740B2Publication Date: 2023-09-12
- Inventor: Luis Filipe Silva , Valério Gonçalves , Elizabete de Pinho
- Applicant: TMG—Tecidos Plastificados e Outros Revestimentos Para a Indústria Automóvel, S.A.
- Applicant Address: PT V.N. Famalicão
- Assignee: TMG—Tecidos Plastificados e Outros Revestimentos Para a Indústria Automóvel, S.A.
- Current Assignee: TMG—Tecidos Plastificados e Outros Revestimentos Para a Indústria Automóvel, S.A.
- Current Assignee Address: PT V.N. Famalicão
- Agency: Duane Morris LLP
- Priority: EP 186260 2019.07.15
- International Application: PCT/EP2020/069759 2020.07.13
- International Announcement: WO2021/009123A 2021.01.21
- Date entered country: 2021-12-22
- Main IPC: B32B27/06
- IPC: B32B27/06 ; B29C48/21 ; B32B25/08 ; B32B25/16 ; B32B27/32 ; B32B37/15 ; B29K9/00 ; B29K23/00 ; B29K101/12

Abstract:
The invention provides a composite structure containing a foam layer, an inner layer and an outer layer of a thermoplastic compact cover layer, and a lacquer layer in this order, and having a tensile strength according to DIN EN ISO 527-3 at 2000 mm/min and 23° C. of less than 5 MPa in both a first direction and a second direction perpendicular to the first direction, wherein the density of the foam layer is 40 to 150 kg/m3, the inner layer contains particles of an elastomer (polymer (F)) and at least 50 wt % of a thermoplastic polyolefin (polymer (E)) and is directly bonded to the outer layer, the outer layer differs from the inner layer in its composition and contains the following polymers (A) to (C) in a total amount of 100 parts by weight: 25 to 70 parts by weight of particles of an elastomer (polymer (A)), 0 to 40 parts by weight of a low-density polyethylene (polymer (B)), and 20 to 70 parts by weight of a thermoplastic polyolefin (polymer (C)) other than polymer (B). The invention provides the use of the composite structure in car interiors, in particular as airbag cover, a method for the production of the composite structure.
Public/Granted literature
- US20220274382A1 COMPOSITE STRUCTURE FOR AIRBAG COVER Public/Granted day:2022-09-01
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