What are the drying recommendations for Eastar™ copolyester 6763?
Drying Eastar™ copolyester properly is critical to the success of the final part. Make sure that the resin is appropriately dried before starting. A summary of dryer requirements follows: • Type of dryer: Automatic desiccant • Air dryness: Dew point of –30 degrees C (-20 degrees F) • Air temperature: Maximum of 65 degrees C (150 degrees F) at the hopper inlet • Circulation: 0.062 m3/min per kg/h (1.0 cfm of air per lb/h) of resin to be dried and not less than 2.8 m3/min (100 cfm) per unit It is important that the dryer have the correct design requirements for the plastic resin to be processed. Eastar™ copolyester 6763 should be dried at a maximum temperature of 65 degrees C (150 degrees F). Care should be taken to obtain a dryer that can be accurately controlled to deliver air at a temperature of 65 degrees C (150 degrees F) as some dryers tend to cycle uncontrollably hotter. Higher temperatures will cause the pellets to stick in the hopper. An aftercooler should be used to help contro
