About: http://webisa.webdatacommons.org/154849556

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The sheet of the present invention is preferably of a plastics material, for example polyethylene, that has been extruded as a tube and crosslinked by irradiation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com