Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1989-07-12
1990-07-03
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156285, 264 464, 264 467, 264 468, 264259, 2643286, 4580, 4584, 4596, 4612, 4DIG9, B29C 4514
Patent
active
049388258
ABSTRACT:
A laminated article, for example a bath or shower-tray, is manufactured by providing a preformed shell, for example a thermoformed acrylic sheet, which shell is placed in a mould, together with, if required, a reinforcing board, for example of chipboard or plywood. The mould is then closed and materials are injected into the mould cavity which react to form a reinforcing layer on the shell. Preferably, the injected materials comprise a polyol reactant and an isocyanate reactant which form a layer of rigid polyurethane foam. A reinforcing agent, for example glass fibre, and a blowing agent may also be introduced into the mould cavity.
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Armitage Shanks Limited
Weston Caleb
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