Process for bonding by adhesion of a cover to a shaped padding, in particular of polyurethane foam
US5759324A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1031
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for the bonding by adhesion of a cover to a shaped padding, in particular of polyurethane foam, especially for the production of seat cushions. The process includes the step of arranging a cover (1) in a cold-shaping device (2) and fixing it thereto by means of a holding frame (3), then placing an adhesive (4) on the internal walls of the cover (1). The surface of the padding (5) intended to cooperate with the internal walls of the cover (1) is subsequently heated to a high temperature. After a predetermined temperature has been reached the heating is interrupted and the thus heated foam padding (5) is applied to the internal walls of the cover (1) coated with adhesive (4), so as to bring about instantaneous transmission of heat by direct contact with the adhesive (4) leading to extremely rapid setting thereof. The cold-shaping device (2) is then opened and the padding(5) equipped with its cover (1) is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.