Process for making a uhmwpe-tape, wide slit extrusion die and a manufactured uhmwpe-tape thereof

A process for making a UHMWPE tape, comprising:

• providing a fluid composition comprising HMwPE and/or UHMwPE;
• extruding a fluid tape from the fluid composition from an extrusion die (100);
• cooling the fluid tape to obtain a solidified tape and
• drawing the solidified tape in at least one direction in at least one drawing step at a draw ratio of at least 3 in the machine direction,
• wherein the extrusion die (100) comprises
• at least two die inlets (21, 22, 23, 24, 25) through which the fluid composition is supplied;
• an extrusion slit (80) through which the solution tape is extruded and
• a cavity (40) divided in the width direction of the extrusion slit into a plurality of cavity sections (41, 42, 43, 44, 45), each cavity section (41, 42, 43, 44, 45) connecting its corresponding die inlet (21, 22, 23, 24, 25) and the extrusion slit (80), wherein the plurality of cavity sections (41, 42, 43, 44, 45) are arranged such that the flow speed of the fluid composition in the cavity sections (41, 42, 43, 44, 45) at the extrusion slit is substantially equal between the cavity sections (41, 42, 43, 44, 45).