Bilaminate polymer coated metal strip and method for manufacture thereof
US5182141A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1990 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Feb 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2327/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A metal substrate having a first thermosetting elastomer layer and a second thermoplastic layer, both layers being chemically bonded to the substrate, and a method of manufacture therefor. Preferably, the first layer is extruded EPDM which is bonded to the substrate by with a heat-activable polyisocyanate adhesive and the second layer is extruded PVC which is bonded to the substrate by a heat-activable modified acrylic adhesive. Flock may be chemically bonded to a portion of the EPDM. An automotive trim product is disclosed. The preferred method of manufacture is a continuous process involving the steps of applying EPDM adhesive to the substrate; heat activating the adhesive; extruding the EPDM onto the substrate; applying PVC adhesive to the substrate; heating the partially coated substrate to concomitantly activate the PVC adhesive and cure the EPDM; and then extruding the PVC onto the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.