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 In the
structural foam process, thermoplastic foam injection, a blowing agent
is mixed with the thermo plastic pellets in low concentration or is
pumped into the melt in the barrel in a fluid state under high pressure.
This addition of the blowing agent causes a foam core in the part.
Hence, wall thickness difference or large sink marks and deformation can
be avoided. Weight reduction can also be achieved. This technology is
well suited to durable large format parts that require strength and
rigidity.
The structural foam process is used for molded parts which should have
wall thickness differences but cannot be designed otherwise. For the
structural foam process injection molding machines can be used.
An alternative process to structural foam is the processing of PUR foams
which achieve the same properties through a chemical reaction of the raw
materials.
Thieme produces plastic parts with the RRIM PUR process.
Due to close cooperation with network partners, manufacturing in
structural foam as well as other molding processes are possible. With
Thieme, there is the ability to select the best-suited production method
for each part. With our central in-house painting facility, uniform and
top-quality surfaces can be achieved. Sub assembly of the individual
parts and accessories for a complete part system can also be executed by
Thieme. Ask us – we are pleased to supply you with our extensive
structural foam knowledge, experience and information.
For more information on Pur manufacturing as an alternative to
Structural Foam issue, click
here
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