Patent ID: 11933013
Assignee: TENSAR CORPORATION, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC E  B | IPC B  E

Claim 13:
14. A method of providing an integral geogrid construction, comprising:
uniaxially or biaxially stretching a starting material that is a coextruded multilayer polymer starting sheet having at least coextruded first, second, and third layers of polymeric materials,
the polymeric material of the first layer and of the third layer having a first molecular weight and each being from 25 to 34 weight % of the starting sheet, and the polymeric material of the second layer having a second molecular weight different from the first molecular weight and being from 32 to 50 weight % of the starting sheet, and the second layer being positioned between the first layer and the third layer, and
the starting material having a plurality of holes or depressions of a selected pattern therein, to provide an integral geogrid having a plurality of oriented strands interconnected by junctions and a plurality of grid openings in a space defined by the oriented strands and the junctions; and
embedding the integral geogrid in a mass of particulate material.