Integral polyethlene terephthalate grids, the method of manufacture, and uses thereof
US9249552B2 · kind B2 · utility
1Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2008 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Aug 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An integral polymer grid with a plurality of interconnected, oriented polyethylene terephthalate strands and an array of openings therein is made from a polyethylene terephthalate sheet-like starting material having holes or depressions therein that form the openings when the sheet-like material is uniaxially or biaxially stretched. The grid has a higher tensile strength to weight ratio and a higher creep reduced strength to weight ratio than corresponding ratios associated with a grid made from a non-polyethylene terephthalate starting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.