Packaging laminate with gas and aroma barrier properties
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 15, 2002
Grant Date -
N/A
app pub date -
Apr 7, 2000
filing date -
Apr 7, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A packaging laminate (10) including a substrate film (15) coated with a carbon containing silicon oxide layer (16, 17) on both surfaces is disclosed herein. A method for producing the laminate (10), and blanks and packages fabricated from the laminate are also disclosed herein. The PECVD process of the present invention strains the substrate film (15) during deposition thereby creating a very thin oxide layer with superior durability, oxygen and aroma barrier properties. The carbon-containing silicon oxide coating (16, 17) has a stoichiometry of SiOxCy in which x is witin the range of 1.5-2.2 and y is within the range of 0.15-0.80. The substrate film (15) may include a core layer (12) of a material selected from the group consisting of paper, paperboard, a foamed core, polyethylene terephtalate, polyamide, polyethylene and polypropylene.
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