Method of manufacturing an interior trim panel using polyurethane powder
US5580501A · kind A · utility
39Cited by
18References
18Claims
0Family size
Inventors
Key dates
| Filing date | Nov 7, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Nov 7, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C44/086
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An interior trim panel comprises a flexible polyurethane skin layer, an intermediate resilient polyurethane foam layer and a rigid polyurethane foam substrate. The flexible polyurethane skin layer and intermediate resilient polyurethane foam layer are formed as an expanded thermoplastic urethane (TPU) shell in a slush molding process. The rigid polyurethane foam substrate is then foamed in place on the shell in a substrate forming mold. This produces an environmentally friendly, long lasting interior trim panel that can be manufactured economically without any need for plasticizers or adhesive coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.