The invention provides a process to orient a high molecular weight polymer film, formed from molten, dispersed or dissolved state, characterised in that as a start of this orientation process the film becomes embossed in a pattern of closely spaced dots or thin short lines, 5 thereby becoming oriented within these e...
A procedure wherein a tubular high molecular weight polymer film which has been longitudinally stretched and therefore is longitudinally shrinkable, is converted by helical cutting to second polymer film, which then is heated and relaxed in order to partly or totally eliminate the shrinkability, whereby one edge of ...
[Class : 17] Laminated Plastic Films For Use On Windows, Cross Linked Polymeric Membranes In Sheet Form, Plastics In The Form Of Sheets, Films, Blocks, Rods And Tubes, Laminated Plastic Sheets For Use In Manufacture, Plastics In Extruded Form For Use In Manufacture, Plastic Sheet Materials For Use In Manufacture Being Goods Included In Class 17.