Patent ID: 7648754
Filing Date: 2010-01-19
Classification: E02D,Y10T

Abstract:
1. A durable cellular confinement system comprising a plurality of polymeric strips; each polymeric strip comprising at least one outer polymeric layer and at least one inner polymeric layer, wherein at least one layer is more resistant against UV light, humidity or heat (UHH) than virgin high density polyethylene (HDPE); and wherein the at least one outer polymeric layer comprises (i) a UV absorber or a hindered amine light stabilizer (HALS), (ii) from 34 to 100 weight percent of medium density polyethylene or high density polyethylene, (iii) from 25 to 100 weight percent of an ethylene-acrylic acid ester copolymer, an ethylene-acrylic acid ester terpolymer, an ethylene-methacrylic acid ester copolymer, or an ethylene-methacrylic acid ester terpolymer, and (iv) a mineral filler.