Stock material or miscellaneous articles – Composite – Of polyamide
Patent
1997-01-03
1997-11-11
Cannon, James C.
Stock material or miscellaneous articles
Composite
Of polyamide
264564, 426127, 426160, 4284747, 4284752, 4284769, A23C 1916, B32B 2708, B32B 2734, B65D 8576
Patent
active
056861923
ABSTRACT:
The invention relates to a barrier layer resisting the transmission of oxygen for multi-layer barrier film characterized in that it is made of a transparent copolyamide comprising three components. The first component is hexamethylenediamine and adipic acid. The second component is hexamethylenediamine and azelaic acid, hexamethylenediamine and sebacic acid, and mixtures thereof. The third component is hexamethylene-diamine and isophthalic acid, hexamethylenediamine and terephthalic acid, and mixtures thereof. The total of all components is 100 mol %, and the ratio of the barrier effects in the barrier layer with respect to carbon dioxide and oxygen is at least 3:1.
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Hewel Manfred
Presenz Ulrich
Cannon James C.
Ems-Inventa AG
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