Multilayer polymeric/inorganic oxide structure with top coat for enhanced gas or vapor barrier and method for making same
US6720052B1 · kind B1 · utility
5Cited by
64References
22Claims
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Key dates
| Filing date | Aug 24, 2000 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The coated multilayer structure comprising a polymeric base layer, an inorganic oxide gas barrier layer on a surface of the polymeric base layer, and a top coat on the inorganic oxide gas barrier layer, the top coat comprising a soluble compound capable of reducing the permeability of the multilayer structure to gas or vapor. A method for enhancing the gas or vapor barrier properties of a multilayer polymeric/inorganic oxide structure is also disclosed. According to one embodiment, SiOx coated polyethylene terephthalate containers are coated with a gas or vapor barrier enhancing top coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.