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| | PLASTICS | | The plastics industry is very aware of the problems associated with airborne moisture, from the formation of condensation on moulds (sweating) to the absorption of moisture by the plastic granules. |
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Injection and blow moulding operations
utilize thermoplastics which are heated
to plasticity and shaped into forms
via use of a mould. The majority of
systems employ the use of chilled water
to maintain a cold surface on the mould,
resulting in a quicker forming time of the
component, and thus higher production
volumes. In fact, generally the colder the
mould, the quicker the cycle time and
greater the production outputs.
Operating at low mould temperatures
creates problems with condensation
(sweating) on the mould surface, especially
during the summer period. This
will result in unacceptable water marks
on the product and corrosion on expensive
moulds and guide pins, necessitating
repair or even replacement.
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The dewpoint |
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-solutions for humidity-related problems. Seibu
Giken DST AB |
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The dewpoint pdf |
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Pharmaceuticals
Chemexpo 2008 
Plastics