Purging Compounds Ultra Purge PMMA and Ultra Purge PC
No More Residues after Four Shots
Producing transparent and spotless headlight lenses by injection molding is extremely demanding, because even the slightest impurity becomes visible in these parts. At K2013, M.P.I. Srl – Moulds Plus International, Villalvernia, Italy, presented two newly developed types of their Ultra Purge purging compound developed specially for PC and PMMA applications. These purging agents induce a chemical reaction to purge plastic, color or carbon residues from the screw, barrel and hot runner system. As a result, according to supplier information, they reduce idle times due to color or material change, and help eliminate the dreaded “black specks”.
The new Ultra Purge PMMA and Ultra Purge PC products were developed on the basis of Ultra Purge 5060. Both types leave little residue, solving one of the major challenges when using commercial purging compounds: Quite often, residues from purging cause impurities in the parts produced or several dozens of injection processes are necessary until the purging compound has been removed from the machine. This is now a thing of the past. The manufacturer claims that Ultra Purge eliminates any residues from PC or PMMA application within as few as four shots.
M.P.I. srl - Moulds Plus Int.
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