About: http://webisa.webdatacommons.org/23348148

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	When certain plastics are moulded at around 220oC, particular additives called BLOWING AGENTS break down to form gases such as nitrogen, carbon dioxide and water.
http://www.w3.org/ns/prov#wasQuotedFrom	bpf.co.uk