Process for producing hoses of high impermeability to gas and vapor
US4950436A · kind A · utility
15Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Apr 20, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/153
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process is disclosed for producing a composite hose constructed with a core tube, a reinforcement layer and a cover laminated one on another, the core being made up of a resin inner wall and a rubber outer wall. Gas impermeability and flexibility are enhanced by formation of the inner wall on a mandrel of selected synthetic material and specified bending strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.