Stock material or miscellaneous articles – Composite – Of metal
Patent
1997-01-29
1999-11-09
Chen, Vivian
Stock material or miscellaneous articles
Composite
Of metal
428 358, 428515, 428516, 428910, 427532, 427533, 427535, 427536, 427537, 427569, 427404, B32B 1508, B32B 2708, B32B 2716, B32B 2732
Patent
active
059810793
ABSTRACT:
A multi layer film having enhanced barrier properties against transmission of oxygen and water vapor is provided. The multi layer film includes a polypropylene base layer, with a high density polyethylene layer on at least one surface of the polypropylene base layer. The polyethylene layer includes a surface which has been subjected to plasma treatment with a hydroxyl-donating material such as a methanol. The film further includes a metal layer deposited on the plasma treated surface, such as a layer of vacuum deposited aluminum. Multi layer films according to the present invention are particularly useful as packaging films for food products.
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Mount, III Eldridge M.
Wagner, Jr. John R.
Chen Vivian
Mobil Oil Corporation
Santini Dennis P.
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