LAMINATED CONTAINER

摘要

1510860 Laminated containers GOODYEAR TIRE & RUBBER CO 5 Dec 1975 [2 Jan 1975] 50002/75 Heading B5N [Also in Division B7] A laminated container suitable for containing lubricating oil at a temperature of 150-230‹ comprises an oil-impervious rigid container 11, e.g. of steel or polymer encapsulated glass fibres, having adhered to its outer surface a laminate of outwardly successive adherent laminae comprising a first rubbery polyfluorohydrocarbon composition lamina 12 adhered to the container with a polyfluorohydrocarbon cement and a second lamina 13 of flexible substantially non-extensible multiple layers of textile fabric selected from aromatic polyamides and polyaramides impregnated or coated with a flexible polyfluorohydrocarbon composition, the second lamina being adhered to the first lamina with a polyfluorohydrocarbon cement, the aromatic polyamides having a molecular weight of at least about 50,000 and being of units of the formula in which R is carbonyl or alkylene, arylene or substituted arylene having 2-10 carbon atoms, and the polyamides being of the structure A third outer rigid lamina 14 of multiple layers of polymer encapsulated glass fibres which may be non-woven strands or woven or non-woven fabric, may be adhered to the second lamina. The first lamina 12 may have a thickness of 0À3-0À6 inches, the second lamina 13 may have a thickness of 0À03-0À12 inches and the third lamina 14 may have a thickness of 0À04-0À2 inches. The polyfluorohydrocarbons used as the first layer and for the adhesive may be highly halogenated hybocarbon chain polymers whose structure is composed substantially exclusively of carbon, hydrogen and halogen atoms, reacted at elevated temperatures with an organic peroxy compound and with a basic metal compound to produce a cross linked polymer and is suitably prepared by the copolymerization of a highly fluorinated monoolefin with a hydrogen containing monoolefin. The polymer used to encapsulate the glass fibres in the third layer 14 may be an epoxy or polyester resin. In an aircraft, e.g. a helicopter, the laminated container may be used for the gear box and oil sump therefor which may be positioned between the motor and rotary propeller blades.