Thin films of high-molecular polyethylene and process for...

Details Thin films of high-molecular polyethylene and process for... Thin films of high-molecular polyethylene and process for...

C - Chemistry, Metallurgy

08

J

18/1041, 18/793

C08J 5/18 (2006.01) B29C 55/12 (2006.01) B29D 7/01 (2006.01)

Patent

CA 1266551

ABSTRACT Smooth, glossy, thin films based on linear polyethy- lene with Mw> 4 x 105, preferably above 8 x 105, having a strength above 1 GPa, a modulus above 20 GPa, and a FEM value above 150 KJ/m, and having a thickness below 25 µm, preferably below 2 µm, an opacity below 15 % and a water vapour transmission value below 0.6. Such films can be prepared by spinning or ex- truding a semidiluted solution of polyethylene, thermoreversible gelation of the spun or extruded article, followed by high, bi- axial stretching.

491579

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