Process for forming a continuous web from polyurethane foam pieces
US6623676B1 · kind B1 · utility
13Cited by
44References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1999 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jul 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/916
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A continuous process for reusing scrap polyurethane involves the following stages: Chips of thermoset polyurethane foam are supported as a bed; the bed of chips while moving is heated; the bed of chips while moving is subjected to pressure or compression; and a web is formed. The resulting material is useful in many industrial applications, including padding, gaskets, and insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.