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    4.
    发明专利
    未知

    公开(公告)号：SE326894B

    公开(公告)日：1970-08-03

    申请号：SE391866

    申请日：1966-03-24

    Applicant: BAYER AG

    Inventor： GUGELOT H ,  HOPPE P ,  REICHL E ,  WEINBRENNER E

    IPC: B62D29/04

    Abstract: 1,147,761. Laminated vehicle frame. PARBENFABRIKEN BAYER A.G. 25 March, 1966 [26 March, 1965], No. 13420/66. Heading B5N. A self-supporting underframe for a vehicle comprises two shells, firmly connected at the edges thereof, the space between the two shells being filled with a hard foam core produced in situ from an expandable reaction mixture, the density of the core exhibiting local variations in a direction perpendicular to the shells and in at least one other direction parallel to the shells. The shells may be of metal, plastics material which may be reinforced with glass fibres), e.g. polyvinyl chloride or plywood and the underframe may be of such shape as to provide a front section, engine and gear-box compartments, wheel compartments, instrument frame compartment, the lower surface of the vehicle compartment, fuel tank compartment, luggage compartment and tail section. The foam core may comprise a phenol-formaldehyde resin, an epoxy resin, polyurethane or polystyrene, the local variations in density being effected by roughening mechanically the inner surfaces of the shells, e.g. by sand-blowing and by subsequently coating them with an adhesive in which three-dimensional glass fibre or synthetic resin fleeces or flocked carrier material, e.g. jute are embedded or on to which fibres are electrostatically flocked. The underframe may be divided into separate compartments, e.g. by bulkheads of foam. Reinforcements, e.g. layers of fibres, torsion bristles, honeycombs, sleeves or gauzes, cables, conduits, pipes and instruments may be incorporated prior to formation of the core. The undersurface is preferably sprayed with an elastomer.

    5.
    发明专利
    未知

    公开(公告)号：SE410834B

    公开(公告)日：1979-11-12

    申请号：SE922868

    申请日：1968-07-04

    Applicant: BAYER AG

    Inventor： HOPPE P

    IPC: B29D99/00 ,  B29C59/00 ,  B29C67/00 ,  B29C67/20 ,  B32B5/28 ,  E04C2/20 ,  B29D27/00

    Abstract: 1,233,910. Laminates; moulding plastic sub- stances. FARBENFABRIKEN BAYER A.G. 27 June, 1968 [4 July, 1967], No. 30684/68. Headings B5A and B5N. An article comprises a foam plastics 6 covered with an outer surface layer 1 and comprising adjacent to the outer surface layer, a zone of reinforced foam plastics, the reinforcement of which comprises at least one reinforcing insert, the or each insert being wholly embedded in the foam plastics, the or each insert comprising at least one mat 3 which is firmly united to at least one loose fibre structure 4, each mat being more compact than a loose fibre structure to which it is united, one insert being arranged so that a mat thereof is adjacent to the outer surface layer of the article. The foam plastics may be a polyurethane and may decrease in density towards the centre of the foam plastics. The outer surface layer may be of metal, glass fibrereinforced plastics material or a pre-preg. The reinforcing insert may be of glass fibres, synthetic resin fibres or filaments or of wire. The mat and the fibre structure may be united by needling, stitching or stapling or by the use of an adhesive. In a preferred embodiment, the insert comprises an electrostatically fibre-flocked coarse mesh mat. In a further embodiment, a voluminous non-woven fibrous structure is embedded in the part of the foam plastics not reinforced by the insert(s). In an example, a mould surface is coated with a gel coat of an epoxide resin to form an outer surface layer, a reinforcing insert consisting of two layers of woven glass fabric and two layers of bonded non-woven acrylic fibres (arranged alternatively) is applied to the gel coat and covered by a non- woven acrylic fibre structure, the mould then being charged with a polyurethane foam. The articles of the invention may be used in the production of vehicle bodies.

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