Methods of blocking stains on a substrate to be painted, and composites suitable for use in such methods
US7332046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2003 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Methods of blocking stains on a substrate to be painted are disclosed, as are stain-blocking composites that are useful according to the disclosed methods. In a broad aspect, the methods include the steps of contacting a stained portion of the substrate with a dry film layer; applying pressure to the dry film layer to cause the dry film layer to adhere to the stained portion of the substrate and to at least a portion of the substrate adjacent the stained portion of the substrate; and subsequently coating the dry film layer and the adjacent substrate with one or more additional liquid coating layers. Stain blocking composites useful according to the methods described include a release layer, to which the pressure is applied; a dry film layer, that can be clear or pigmented, that serves to block the stain; and an optional adhesive layer, intended to assist in adhering the dry film layer to the stained portion of the substrate and to at least that portion of the substrate adjacent the stained portion of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.