Abstract: The invention relates to a composite web comprising one elongated flat composite layer of mutually parallel fibers in a matrix, in which the fibers run at an angle .alpha. (differing from 0.degree.) relative to the lengthwise direction of the web, and which in the lengthwise direction is made up of joined-up and connected web parts. This composite web can be used for continuously producing multi-layer composites. The composite layer of the composite web has no areas with overlap or gaps when placed in a multi-layer composite. The invention also relates to a method for the production of this composite web and of multi-layer composites.

Abstract: The stiffness and the tensile strength of a rope containing polymeric filaments manufactured according to the gel spinning process are substantially increased by stretching it. The stretching is preferably carried out at elevated temperature but below the melting point of the filaments.

Abstract: The invention relates to combinations of polymer filaments or yarns of high tensile strength, high modulus and low coefficients of friction and filaments or yarns of high coefficients of friction. Combinations of this type, which have been produced in particular by core spinning the filaments or yarns of low coefficient of friction with filaments or yarns of high coefficients of friction or by twisting the two filament or yarn components, are suitable in particular for producing bulletproof wovens, knits and nonwovens.