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Manufacturing:
Plastic Molding & Forming
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Plastic
Molding
Processes
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Plastic
Molding & Forming Processes
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Liquid Resin Molding
Like metal casting, liquid
resin casting usually starts with a male
pattern, often produced from aluminum, which
is fastened to a flask. A liquid mold material,
such as epoxy, urethane or MY silicone is
poured in. One pattern can make an unlimited
number of molds. Liquid resin is then poured
into the mold to produce a part. Unlike
metal casting, liquid resin casting captures
significantly more details, particularly
when silicone is used as a mold material.
Details such as threads, and surface finishes
such as textures or high-gloss can be achieved
straight from the mold, without secondary
operations. The process is most economical
in cases where the part design is very complex
and where the quantity required is in the
range that is not well-suited for either
machining or other kinds of molding processes
(generally from 25 to 50 on the low end
to 3000 on the high end).
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