Method of making an integral geogrid from a coextruded multilayered polymer starting material
US11198986B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Apr 22, 2020 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2300/0084
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An integral geogrid includes a plurality of interconnected, oriented strands having an array of openings therein that is produced from a coextruded multilayer polymer sheet starting material. By virtue of the construction, the coextruded multilayer sheet components provide a crystalline synergistic effect during extrusion and orientation of the integral geogrid, resulting in enhanced material properties that provide performance benefits to use of the integral geogrid in soil geosynthetic reinforcement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.