Manufacture of tubular laminates
US4446181A · kind A · utility
45Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1982 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Mar 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2405
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tubular lining for lining passages is formed, such liner being constructed from a laminate comprising a resin absorbent layer and an impermeable skin. The laminate is wrapped to tubular form with the skin outermost and the free edges are butted together and are connected in this condition by a sewing operation. A sealing ribbon as applied over the sewing to seal the seam and stitching to prevent the flow of liquid or synthetic resin through the seam when the lining is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.