Imperial Chemical Industries Limited

Anthony Garry Harrison

David Edward Higgins

William N Meredith

Thane Colin Gough

Joseph Anthony Semlyen

Pamela Moira Jeffels

Philip Hodge

Polyesters

Composite sheet having improved adhesive properties and methods of

A polymeric film comprises a substrate layer of polymeric material and a coating layer formed from a composition comprising a layer mineral and a cross-linking agent. The coating layer comprises greater than 10% and less than 90% by weight of the layer of the layer mineral and greater than 10% and less than 90% by weight of the layer of a resin derived from the cross-linking agent. The coating layer preferably additionally comprises a copolymer of ethylene with a vinyl monomer. The polymeric film can have oxygen barrier properties, and the layer mineral coating layer exhibits improved adhesion to the polymeric substrate. The polymeric film is particularly suitable for use as a packaging film.

Polymeric packaging film coated with a composition comprising a layer

A polymeric film comprising a substrate layer of polymeric material having on at least one surface thereof a coating layer comprising vermiculite platelets wherein 50 to 100% by number of the platelets have a particle size in the range 0.5 to 5.0 .mu.m. The film exhibits oxygen barrier properties and is suitable for use as a packaging film.

Polymeric film comprising a coating layer of vermiculite platelets

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Middlesbrough, United Kingdom

Anthony Garry Harrison