Packing material that can be shaped under the effect of heat

Details Packing material that can be shaped under the effect of heat Packing material that can be shaped under the effect of heat

B - Operations, Transporting

29

C

18/663

B29C 61/02 (2006.01) B29C 55/00 (2006.01) B29C 55/26 (2006.01) B29C 57/00 (2006.01)

Patent

CA 1036308

ABSTRACT OF THE DISCLOSURE A thermoplastic packing material in the form of a web of foamed plastic having a cellular structure with closed, thin- walled cells, the cells having a lenticular shape, the cells being arranged with their longitudinal axes parallel to each other. The material is formed by extruding a molten plastic in tube or sheet form and containing a liquid having a low boiling point, and then subjecting the material to monoaxial or biaxial stretching, whereby the spherical cells formed by extrusion of the material are elongated.

202875

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