MTCU (mold temperature control unit) using
Do you use MTCU (mold temperature control unit) or not? If you use it what temperature you recommend for production big parts like bumpers, crush pads from polypropylene?
You can use MTCU at your moulds or just using cold water.
It depend from the flow length and your process set up in your molding shop.
But prior to define it you have to have a mould where the mould surface temperature are stable at long run and also your process water temperature stable too.
Generally 20-40 Celsius on the mould surface for unfilled PP could be used depend from the wall thickness.
is recomendation of the supliers of the mold temperature controller and thermoplastic resine is in range of the 340 fareiheit to 410 fareiheit to pp and temperature of the mold of the chiller for 60 fareiheit to 90 fareiheit
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for PP+HDPM you need surface temp 40-45 degree .but for having controlled shrinkage,you need TCU.