Imperial Chemical Industries Limited

Grahame M Reade

Alan Charles Viney

William Clarke

Maurice Danby

John A Cunningham

A double-glazing assembly suitable for horticultural and agricultural growing houses comprises two flexible light-transmitting thermoplastics film, especially polyethylene terephthalate films, separated by a spacing framework. Means are provided to evacuate the enclosure between the sheets during the day-time thereby improving the light transmission of the assembly. The assembly is also preferably provided with means for inflation to optimise the conservation of thermal energy during the night-time.

Double-glazing assemblies

A laminate comprising a layer of a synthetic linear polyester, a plasticizer-free primer coating applied to at least one surface of the polyester layer and comprising a cross-linked composition comprising a polymer of at least one monomer selected from the esters of acrylic acid and methacrylic acid, and optionally acrylic and/or methacrylic acid, and at least one layer made from a plasticized vinyl chloride polymer composition which is bonded to the linear polyester layer through the intermediary of the primer coating. The primer coating preferably includes the condensation product of an amine with formaldehye to effect cross-linking.

Polyester/vinyl chloride polymer laminates

Coloration process

Coating tubular plastics film by depositing on each surface of the lay-flat web a plurality of evenly spaced lines of coating material parallel with the length of the web, and using contrarotating rollers to spread the deposited lines, causing them to merge into a uniform coating.

Apparatus for coating plastic film

Coating tubular plastics film by depositing on each surface of the lay-flat web a plurality of evenly spaced lines of coating material parallel with the length of the web, and using contra-rotating rollers to spread the deposited lines, causing them to merge into a uniform coating.

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Wheathampstead, United Kingdom

Grahame M Reade