Commercial Metals. has filed a patent for a multilayer integral geogrid with enhanced compressibility and performance benefits for stabilizing and strengthening soil and aggregates. The geogrid features oriented multilayer strands interconnected by partially oriented junctions, produced from a coextruded or laminated polymer sheet. GlobalData’s report on Commercial Metals gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Commercial Metals, was a key innovation area identified from patents. Commercial Metals's grant share as of January 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Multilayer integral geogrid for stabilizing soil and aggregates
The patent application (Publication Number: US20240026628A1) describes a starting material for creating a multilayer integral geogrid, consisting of a multilayer polymer sheet with multiple layers of polymeric material. The outer layers of the sheet have an expansion structure capable of forming a cellular structure in the resulting geogrid. The sheet also contains holes or depressions that create openings when biaxially stretched. The thickness of the sheet ranges from 2mm to 12mm, with specific thickness ranges for each layer.
The method outlined in the patent involves providing a multilayer polymer sheet with cellular outer layers, creating a pattern of holes or depressions in the sheet, and biaxially orienting the sheet to form interconnected strands and grid openings. The resulting geogrid has cellular outer layers with a foam construction and may include a particulate filler. The method can be carried out through coextrusion or lamination processes. The geogrid produced can be embedded in particulate material to strengthen soil constructions, providing enhanced stability and reinforcement. The patent also covers methods for producing different types of integral geogrids, such as rectangular, triaxial, or hexagonal configurations, to suit various construction needs.
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