Packaging laminate possessing gas and light barrier properties, and a method of producing the same
US5514434A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A packaging laminate for a package possessing superior gas and light barrier properties is disclosed, and a method of producing the packaging laminate. The packaging laminate includes a layer of a silicon oxide compound serving as gas barrier and a layer of metal serving as light barrier, these layers being deposited by vacuum deposition on each respective layer of plastic serving as carrier, and being permanently bonded to one another through an interjacent layer of adhesive for the formation of the packaging laminate. By regulating the thickness of the gas and light barrier layers independently of one another, an optional combination of gas and light barrier properties is made possible, whereby the packaging laminate may be more or less "tailor made" for each type of product which is to be packed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.