Laminate comprising a corrosive-resistant plastic film, a layer of cut fibers, a layer of continuous fibers and a reinforcement layer, the fibrous layer being impregnated with a curable resin
US5445875A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1993 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Sep 16, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/674
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminate for lining a passage, which is entirely or partially surrounded by walls, above or under the ground, which laminate comprises at least one layer of a reinforcement (4) of continuous fibre, a curable resin (5) and a plastic sheet or plastic film (3) which is on the inside of the laminate when the laminate is inserted into the passage (10) which shall be lined. In order to give the laminates corrosion durability and flexibility which stand on a par with the strength of the laminate so that not anyone of these parameters will determine the life length of the lining, there is arranged a mat (8) of fibres between the inner film (3) and the reinforcement (4) which mat on its side which is turned to the inner film (3) has cut fibres (13), and which together with its cut fibres can absorb resin for concentration of curable resin to the inner surface of the cured laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.