Method of making polyolefin/filler composite materials
US5597522A · kind A · utility
11Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1994 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Dec 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A smooth-surfaced tape or sheet of composite syntactic material made up of a polyolefin and, as filler, hollow microspheres, is formed by extrusion through a die having a land length to thickness ratio less than 7:1 at a temperature of about 215.degree. C. Such tapes are wrapped around pipes to provide insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.