Non-fluorocarbon oil and grease barrier methods of application and packaging
US6893686B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31844
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-fluorocarbon oil and grease barrier packaging for storing materials, particularly products that need oil and grease resistant characteristics. The barrier packaging does not contain fluorocarbons, which improves the environmental rating of the oil and grease barrier packaging. The packaging is made by applying an acrylate based overprint varnish to a substrate and then curing the overprint varnish with a curable energy source, which regulates a cross-link density of the overprint varnish. Application can be flexography, rotogravure, or either rod or blade coated. The overprint varnish possesses oil and grease resistant characteristics, which allows packaging producers to forego use of oil and grease resistant coated substrates in their packaging manufacturing processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.