Polyolefin film, tape or yarn

摘要

A monoaxially drawn polyolefin multilayer film, tape or yarn of the AB or ABA type is disclosed, which has a total stretch ratio of more than 12, and an E-modulus of at least 10GPa, substantially consisting of a central layer (B) of a polyolefin selected from polyethylene and polypropylene, and one or two other layers (A) of a polyolefin from the same class as the material of the central layer B, the DSC melting point of the material of the said other layers (A) being lower than the DSC melting point of the material of the said central layer (B), wherein the central layer (B) is between 50 and 99 wt.% of the material and the other layers (A) between 1 and 50 wt.%. A method of manufacturing such a tape, film or yarn is also disclosed.