Sheet for interior or exterior materials for automobiles and method for producing same
US11186236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2017 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jun 3, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/003
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A sheet for an automobile interior/exterior material provides excellent sound absorption performance. A sheet for an automobile interior/exterior material, which comprises a nonwoven fabric layer in which a fiber weight is 220 g/m2 to 1,000 g/m2 and an olefin resin layer laminated on one surface of the nonwoven fabric layer. The formation amount of the olefin resin layer is within a range from 100 g/m2 to 500 g/m2, the melt flow rate of the olefin resin is within a range from 1 g/10 minutes to 90 g/10 minutes. The nonwoven fabric layer is impregnated with at least a part of the resin in the olefin resin layer, the olefin resin layer is provided with a plurality of micropores. The sheet for an automobile interior/exterior material as a whole has air permeability of 1 to 60 (cm3/cm2·second) in the thickness direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.