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Providing informative tips for good purging practices, along with interesting and sometimes provocative observations on polymer processing and the plastics industry.
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Purging Pointers from Novachem
Preventative Maintenance
Sometimes, due to excessive contamination or the requirements of a
Preventive Maintenance program, you just have to tear down a piece
of equipment. Split a die, pull a screw, open up heads – all
unpleasant tasks. Often a purging compound, used as a
pre-tear-down aid, can make the job easier. Some resins are tacky
and difficult to remove from metal surfaces but purging compounds
are designed for removal from the system – they should peel off
pretty easily. Just run the purge in accordance with the
instructions and when you reach the stage where the system is run
empty, cut the heats and begin your tear-down.
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