Most of the resin used in injection molding are hygroscopic (water attracting).
After drying the plastic resin, a defined residual moisture content shall be ensured within the material.
This needs to be checked according to the specifications of the material supplier.
If the residual moisture is too high, there is an increased risk of air traps, void and other defects.
In addition to that, the mechanical properties of the part will be reduced, too.

Considering this, it is vital to measure the residual moisture content of plastic material before drying and before using it in injection molding.

Residual Moisture in Plastic Industry by Brabender Messtechnik


Quality: Portable residual moisture meter.

Residual Moisture in Plastic Industry by Brabender Messtechnik


 


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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
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