Co-extruded film
US10406788B2 · kind B2 · utility
0Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Aug 4, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/70
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a co-extruded film comprising a sealing layer of low density polyethylene and a skin layer, wherein the skin layer comprises a copolyamide which comprises: •At least 75 wt % monomeric units derived from caprolactam; •Between 5 to 25 wt % monomeric units derived from a diamine and terephthalic acid; wherein the weight percentage is with respect to the total weight of copolyamide in the skin layer. The invention also relates to a process for preparing such a film, as well as applications of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.