Thermoplastic multi-ply film with metallic appearance
US8865294B2 · kind B2 · utility
15Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Jan 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24909
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Laminated multi-ply films where one film layer is substantially unpigmented and the other film layer is substantially pigmented can provide a metallic appearance when the substantially unpigmented film layer is cold stretched either prior to lamination or during the lamination step. This surprising result provides an inexpensive way to produce films with a metallic appearance. Trash bags having an inner bag and an outer bag laminated together may be formed according to this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.