Ballistic-resistant article based on films provided with matrix
US11971243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2020 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Nov 24, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2571/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for manufacturing a ballistic resistant article including steps: a) stacking a stretchable lamina of ultra-high molecular weight polyethylene (UHMWPE) and a stretchable continuous film of a polymer as organic matrix material to form a lamina-film stack, the continuous film not being an UHMWPE film; b) elongating the stack at a temperature below the melting point of the lamina, to an elongation ratio of at least 2, thereby providing a UHMWPE film with an organic matrix material in which the UHMWPE film is co-stretched with the film of polymer as organic matrix material; c) aligning a plurality of films to form a layer of films; d) stacking at least two layers of films to form a sheet; e) stacking a plurality of sheets to form a stack of sheets, and consolidating the sheets prior to and/or after step e) by applying pressure and optionally heat. Also, a ballistic-resistant article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.