Purgex Provides Rapid Colour Changes When Moulding Caps and Closures
Manufacturing plastic caps, plugs, and other closures can require frequent colour changes for injection moulders. This can lead to excessive downtime, high scrap rates, and wasting otherwise usable resin in order to purge the previous colour from the system. Changing from a dark to light colour is typically the most troublesome for moulders.
Purgex commercial purging compounds (CPC) are chemical-mechanical formulations used to change colours faster and more thoroughly compared to using in-house resins and regrinds to purge. Purgex also removes inclusions and contaminants (e.g. black specks). The results are reduced downtime, lower scrap rates, and less use of virgin resin when purging injection moulding machinery. This also decreases overall operating costs while increasing productivity for manufacturers of plastic caps and closures.
All Purgex grades use ingredients that are non-toxic and USA-FDA approved for food, pharmaceutical and medical plastics use. Purgex is safe to use in hot runner systems with gates as small as 75mm and has a variety of grades available to clean filled or unfilled resins from machinery at processing temperatures ranging from 138∞C to 316∞C.