Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent
1982-04-12
1987-10-27
Buffalow, Edith
Stock material or miscellaneous articles
Composite
Of quartz or glass
428432, 428433, 428480, 428 35, 428469, 428448, 428689, 426107, 426126, 426234, B32B 1706
Patent
active
047029633
ABSTRACT:
Flexible polymer packaging films having thin films of inorganic coatings deposited thereon to reduce the vapor permeability of the article. Inorganic thin film coatings comprising a composite of two materials are disclosed to confer both substantial transparency and retortability on the overall packaging film structure. The two material film composite involves either sequentially deposited films with the first thin film layer serving as an adhesion layer and the second thin film layer serving as a barrier layer. Alternatively, the two materials may be co-deposited to form a single thin film layer which provides sufficient adhesion to confer retortability on the overall film structure and also functions as relatively impermeable gas and vapor barrier for reducing the vapor transmission rate through the product. Various coated single film articles and dual film laminated articles are disclosed.
REFERENCES:
patent: 4215168 (1980-07-01), Yonemura
patent: 4312915 (1982-01-01), Fan
"New High Barrier Film Which Permit Microwave Heating", Journal of Microwave Power, vol. 11, No. 2, (1976), pp. 211-212, Hecht et al.
Matteucci John S.
Phillips Roger W.
Shevlin Craig M.
Buffalow Edith
Optical Coating Laboratory, Inc.
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