Method of manufacturing a flexible polyurethane foam product
US4237181A · kind A · utility
13Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1978 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249999
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a patterned cushioning product of flexible polyurethane foam, which is suitable for use as a flooring or carpetting material, wall lining material or any other surface finishing or lying material, which is manufactured by the application of high frequency vibrations necessary to cause thermally fusible bonding particles to permeate into an open-celled structure of a sheet of flexible polyurethane foam and then fushion-bonding surface covering sheets to the opposed surfaces of the polyurethane foam sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.