Ultra-low permeation hose and method of manufacture
US6988515B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B15/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide ultra-low permeation hoses which have at the interior thereof a refrigerant barrier layer that consists in large part of a metal layer and is capable of conforming to hose deformation, which have an excellent resistance to refrigerant permeation (i.e., barrier properties to refrigerants), particularly an excellent CO2 permeation resistance and an excellent heat resistance when CO2 is used as the refrigerant. The object can be accomplished by an ultra-low permeation hose having at least a refrigerant barrier layer and a rubber layer and/or a resin layer; wherein the refrigerant barrier layer is a laminated film comprising a resin layer and, on the outside thereof, a metal layer, which the resin layer and the metal layer are bonded together by a polyamide-epoxy reactive adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.