Peelable bonded structure and process for preparation thereof

Details Peelable bonded structure and process for preparation thereof Peelable bonded structure and process for preparation thereof

B - Operations, Transporting

32

B

18/52, 154/71, 1

B32B 7/06 (2006.01) B65D 39/00 (2006.01)

Patent

CA 1108973

ABSTRACT OF THE DISCLOSURE 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 concentra- tion 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 con- centration 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.

316674

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