Metallized wrapping film
US5283118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Jun 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A metallized wrapping film having low water vapor transmittance and low oxygen transmittance, in which the adhesion of the metallic layer to the base film is strong, and which has heat-sealing property is disclosed. The metallized wrapping film according to the present invention comprises a plastic base film; a heat-sealing layer formed on one surface of said base film; and a metallic layer formed on one surface of said base film opposite to said surface on which said heat-sealing layer is formed, said metallic layer consists essentially of 70-99% by weight of aluminum and one or more elements selected from the elements having an atomic number of 12-30 excluding aluminum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.