Method of manufacturing a dried, thermoformable, paint-coated sheet material having gloss and smoothness
US4913760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2067/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the manufacture of a paint-coated stretchable film which is useful as a covering for automobile panels and other articles, a stretchable carrier film is formed by extruding a thermoplastic polymer composition onto a heat resistant temporary carrier film. The extruded layer is coated with paint or other layers and dried initially at a moderate temperature and finally at a high temperature which exceeds the heat deformation temperature of the stretchable carrier film but not of the heat resistant temporary carrier film. This shortens drying time and/or reduces residual solvents in the dried layers. The temporary carrier film, which is later stripped away, resists deformation of the laminate as it is drawn under tensile stress through the coating and high temperature drying stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.