Patent ID: 11971243
Assignee: TEIJIN ARAMID B.V.
Field: Surface technology, coating (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A process for the manufacture of a ballistic resistant article comprising the steps of:
a) stacking a stretchable lamina of ultra-high molecular weight polyethylene (UHMWPE) and a stretchable continuous film of polymer as organic matrix material to form a lamina-film stack, the continuous film of polymer as organic matrix material not being an UHMWPE film,
b) elongating the lamina-film stack formed in step a) at a temperature below the melting point of the stretchable UHMWPE lamina, to an elongation ratio of at least 2, thereby providing a stretched lamina-film stack in which the UHMWPE lamina is co-stretched with the film of polymer as organic matrix material,
c) aligning a plurality of stretched lamina-film stacks provided according to step b) to form a layer of the stretched lamina-film stacks,
d) stacking at least two layers formed according to step c) to form a sheet,
e) stacking a plurality of sheets formed according to step d) to form a stack of the sheets, and
f) consolidating the sheets prior to and/or after stacking the sheets according to step e) by applying pressure and optionally heat.