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lay-up molding may be used for the production of parts of any dimensions,
for example technical parts with a surface area of a few square feet, as well as
swimming pools as large as 1600 square feet. But this method is generally
limited to the manufacture of parts with relatively simple shapes
that require only one face to have a smooth appearance (the other
face being rough from the molding operation). It is recommended for
small and medium volumes, for which the investment in molds and equipment
should not be very high. |
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The contact molding method consists of applying
successively onto a mold:
a release agent
a gel coat
a layer of liquid thermosetting resin, of viscosity between 0.3
and 0.4 Pa.s, and of medium reactivity
a layer of reinforcement (glass, aramid,
carbon, etc.) in the form of chopped strands mat or woven roving,
and to impregnate the reinforcement by hand with the aid of a roller
or a brush. This operation is repeated as many times as there are
layers of reinforcement, in order to obtain the desired thickness
of the structure.
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Click on picture to enlarge. |
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Asia
Pacific
