Polyolefin films coated with a thermowelding lacquer based...

B - Operations – Transporting – 32 – B

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B32B 27/08 (2006.01) B32B 23/08 (2006.01) C08G 6/02 (2006.01) C08J 7/04 (2006.01) C09D 133/10 (2006.01) C09D 161/02 (2006.01) C08L 61/02 (2006.01)

Patent

CA 1119058

ABSTRACT The invention relates to the heat welding of poly- olefinic film, particularly polypropylene, in the production of packaging. A coated thermoweldable polyolefinic film comprises a polyolefinic film carrying on at least one face a layer comprising a ketonic resin. The ketonic resin is preferably obtained by polycondensation of an aldehyde with a cyclic ketone. The ketonic resin layer may also be a mixture comprising 20-80% by weigh of ketonic resin and one or more compounds selected from ?inyl, acrylic and cellulo- sic polymers and copolymers.

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