Tube
US6383587B1 · kind B1 · utility
3Cited by
8References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 14, 1994 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Jul 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A tube of layered material consisting of a first layer and a second layer, for use in transporting and storage of hydrocarbons, wherein said first layer consists essentially of polyethylene or polypropylene, and wherein said second layer constitutes a barrier layer for reducing the diffusion outward through said tube of hydrocarbons transported or stored within said tube and comprises polyethylene or polypropylene in combination with any component selected from the group consisting of butyl rubber, polyamide, and polyester. The first and second layers of the tube are coextruded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.