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Dyna-Purge saves you purging costs and downtime

The Situation:
Mitcham Canada, Ltd, of Calgary, Alberta, operates three 30-ton injection moulding machines, processing polyurethane rubber at barrel temperatures ranging from 193˚C to 204˚C (380˚F to 400˚F). With the growing popularity of consumer products combining hard and soft polymers, Mitcham specializes in overmoulding to fill that need. Purging to change colours - often once a day - Mitcham would run virgin polyethylene through their machines. Continuous extrusion purging was not possible due to attached shut-off nozzles. In addition, the design of the equipment led to a significant amount of material hang-up, while long periods of running black colour made purging very time-consuming. Consequently, Mitcham would spend, on average, 1-1/4 hours to purge at a labor and material cost of *C$85.22 (canadian dollars*) per purge.  

The Solution:
Purging compound Dyna-Purge  "K" , a grade specifically designed to purge ‘soft-touch’ polymers from the barrel and screw at processing temperatures between 143˚C to 260˚C (290˚F to 500˚F). 

The overall cost per purge is now only C$40.88 - a 52% improvement !  Since Dyna-Purge cleans thoroughly and effectively on the first pass, Mitcham is experiencing faster, cleaner transitions between coloured products. Dyna-Purge solved the problem of black specks occurring after purging too. 

Visit the Dyna-Purge online shop here. 

Need more information ? contact us here.