Teijin Aramid B.v.

Teijin Aramid Gmbh

Gerwin Elderman

Sanjay Rastogi

Anton Peter De Weijer

Johannes Bos

Joris Eem Van Der

Gerardus Janse

Carsten Geitz

Marc Fietkau

The present invention pertains to a polyethylene film and a process for manufacturing such film. The polyethylene film may have a ratio between the strength in a first direction in the film plane and the strength in a second direction in the film plane perpendicular to the first direction in the range of 0.1-10:1, the strength in at least one direction being at least 0.2 Gpa. The process for manufacturing a polyethylene film may have a starting UHMWPE polymer with an average molecular weight of at least 500,000 grams/mole, an elastic shear modulus determined directly after melting at 160&#xb0; C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a solvent-free compacting process and a stretching process under such conditions that at no point during the process the temperature of the intermediate polymer film is raised to a value above its melting point.

Polyethylene film and method for the manufacture thereof

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Apeldoorn, Netherlands

Gerwin Elderman