ROUGHED PLASTIC FILMS HAVING INCREASED TENSILE STRENGTH

摘要

The invention relates to roughed plastic films having increased tensile strength. The essence of the invention is that it has, at least on its surface to be made antislip, on the entire surface or on specified areas of that, as antislip plastic layer comprising protrusions welded into and at least partially sticking out of the surface, consisting of the substance of the antislip layer and/or other particles capable of welding with the material of the antislip layer, and, directly or indirectly fixed to the other surface of the antislip plastic layer, a strength-increasing plastic layer comprising at least two oriented components fixed to each other to form one unit and having typical orientation directions staying within the layer but otherwise different from (preferably perpendicular to) each other. The invention involves the hot resistant, roughed plastic films having increased tensile strength as well.