About: http://webisa.webdatacommons.org/175886984

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	A bladder may be produced by RF (radio frequency) welding two sheets of the microlayer material or microlayer-containing laminate, particularly when one layer is a polar material such as a polyurethane.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com