Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-07-20
1992-10-06
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156245, 264 466, 264321, B29D 900, B32B 3126
Patent
active
051528568
ABSTRACT:
In a process for making a bonded article having a rigid foam core and a cured fiber-impregnated resin composite skin external of the foam core, a skin of a curable fiber-impregnated resin composite material is overlayed onto a shaped rigid foam core formed of a resin material that below is thermoelastic point is inflexible to expansion by internal gas expansion and below it thermoelastic point has a positive coefficient of thermal expansion. The composite material is chosen to have a cure temperature that is below the thermoelastic temperature of the foam core material. The foam core having the skin thereon is loaded into the cavity of a mold. The mold is closed, secured and heated to the cure temperature of the fiber-impregnated resin composite material to cure the fiber-impregnated resin composite material and to thermally expand the foam core via its positive coefficient of thermal expansion. This consolidates the fiber-impregnated resin composite material and unifies it with the foam core into a bonded structure.
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patent: 3906137 (1975-09-01), Bauer
patent: 4187353 (1980-02-01), Schroeder
patent: 4292101 (1981-09-01), Reichert
patent: 4316934 (1982-02-01), Maier et al.
patent: 4359160 (1982-11-01), Myers et al.
patent: 4665104 (1987-05-01), Bitsch
patent: 4826723 (1989-05-01), Brambach
patent: 4850607 (1989-07-01), Trimble
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Kirk-Othmer Encyclopedia of Chemical Technology, vol. II, 1980, pp. 98, 99.
Thein Joe K.
Uldrich Flerida B.
Anderson Terry J.
Ball Michael W.
Block Robert B.
Hoch Karl J.
Maki Steven D.
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