Method for the preparation of a foamed article of a polyolefin resin
US4674976A · kind A · utility
9Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1986 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jan 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S198/957
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sheet of a cross-linkable and foamable polyolefin resin is thermally treated on an endless conveyor belt formed of a plain weave wire net. A plurality of parallel, spaced apart rolls are disposed in a direction perpendicular to the direction in which the conveyor belt runs for supporting engagement and rolling contact with the conveyor belt to maintain the flatness of the conveyor belt. The belt is supported to prevent lateral and vertical displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.