Urethane bonding method and laminate
US4636425A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Jun 10, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249984
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of surface bonding elements with a two component polyurethane foam, particularly where one of the surfaces to be joined is relatively porous, including contoured fiberglass panels, carpet, foam and fibrous paneling and the resultant bonded structure. The method includes spraying the liquid foamable polyurethane in a fine mist under pressure on one of the surfaces to be bonded to form dispersed discrete liquid polyurethane droplets; permitting the polyurethane droplets to foam and expand in discrete foam pods; applying the second surface to be joined while said polyurethane foam pods are between 20% and 60% of full cure; and, completing the cure of the polyurethane foam, preferably under moderate heat and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.