Peelable bonded structures and process for preparing same

Details Peelable bonded structures and process for preparing same Peelable bonded structures and process for preparing same

1978-11-28

1981-05-26

Robinson, Ellis P.

Bottles and jars

Closures

Cap type

40311, 215230, 215341, 215328, 215347, 260DIG37, 428202, 428204, 428209, 428413, 428416, 428418, 428461, 428463, 428501, 428506, 428515, 428516, 428520, 428522, B65D 4112, B32B 1508

Patent

active

042693217

ABSTRACT:
A peelable bonded structure having a peel strength of 0.05 to 5 kg/cm comprises a plurality of articles, at least one of which is made of metal, bonded together through a composite coating layer. The composite coating layer is composed of adjacent first and second coating layers at least one of which comprises (A) a modified olefin resin having a carbonyl group concentration of 0.01 to 200 milliequivalents per 100 g of the olefin resin and (B) a coating film-forming base resin at an (A)/(B) weight ratio of from 0.2/99.8 to 40/60 and has a multi-layer distribution structure having resin concentration gradients in the thickness direction such that the modified olefin resin (A) is distributed predominantly in the portion contiguous to the interface between the two coating layers and the base resin (B) is distributed predominantly in the opposite portion.

REFERENCES:
patent: 3233770 (1966-02-01), Waters
patent: 3361281 (1968-01-01), Kehe
patent: 3487124 (1969-12-01), Yeshin
patent: 3581690 (1971-06-01), Zapata
patent: 3633781 (1972-01-01), Zapata
patent: 4012270 (1977-03-01), Fitko
patent: 4034132 (1977-07-01), Manuel
patent: 4062997 (1977-12-01), Hotta

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