A process for the preparation of a hollow body with a opening in sandwich - construction or in a laminated construction

摘要

1,031,422. Laminates. SAAB A.B. Feb. 15, 1963 [Feb. 17, 1962], No. 6223/63. Heading B5N. A method of making a vehicle body or boat hull comprises separately building up parts of the body in a plurality of mould parts, each part body being formed of outer layers of resinbonded glass fibres and a layer of core material intermediate said outer layers, positioning the built up body parts in edge-to-edge relationship to conform to the shape of the completed hollow body, the body parts being dimensioned so that when so positioned space? are formed between adjacent edges of adjacent body parts, and applying in said spaces resin-permeable glass fibre strips and resin to overlap edge portions of said outer layers and thereby to join and secure together said body parts. In one exemplification, mould halves 1 and 2 have applied in succession to -the inner surfaces thereof a coloured curable resin 7, a resin permeable glass fibre reinforcement in the shape of overlapping mats 8 which are saturated with the resin, a cellular core of honeycomb-like bitumen impregnated paper 9, a resin-permeable glass fibre reinforcement in the form of mats 10 and curable coloured resin 11, the building up of the body parts being concluded at a distance between the free opening edge of the mould halves the mould halves being put together and in the resultant annular space, curable resin, glass fibre reinforcing mats 12, curable resin, cellular core 13, glass-fibre reinforcing mats 14 and a curable resin being applied. Caravan bodies and boat hulls made up by process of invention are described.