Asymmetrical stretch composite for pipe liner
US11549631B2 · kind B2 · utility
0Cited by
21References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Nov 27, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/1009
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A fibrous material or composite including a plurality of layers joined to one another, for example, by needlepunching, is disclosed. The fibrous composite generally has an asymmetrical stretch profile, such that the fibrous composite is more extensible in the cross-machine direction than in the machine direction. The fibrous composite may find particular use in forming a cure-in-place pipe liner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.