Injection Molding Shutdown & Sealing Purging Instructions

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Asaclean® Purging Instructions for Shutdown & Seal

Shutdown & Sealing

1. Follow the basic Asaclean® purging instructions prior to shutdown.
2. When using Asaclean® EX or NF grade for purging the barrel and screw, displace with ½ barrel capacity of a sealing grade. When using Asaclean® PX2 grade for purging, displace with Asaclean® PF grade for sealing.
3. Empty the barrel.
4. Feed one barrel capacity of the same Asaclean® grade at a slow screw speed. For molding machines, it is best to shutdown with 1/3 – 1/2 barrel capacity of melted Asaclean® in front of the screw. To ensure that the barrel is full check that the feed throat is still filled with Asaclean®.
5. Turn off the heaters.

Start-up

1. Set the heaters to 230°C (450°F).
2. When Asaclean® has completely melted, feed a small amount of fresh Asaclean® to displace the previously charged Asaclean®. Verify the material is free of contamination.
3. If contamination persists, continue purging until the contamination is eliminated.
4. Set heats to production levels.
5. When desired production conditions are reached, begin production.

Exercise proper safety precautions and use appropriate PPE.

Technical Questions?

To request detailed technical bulletins or technical support, contact us at Asahi Kasei Plastics North America Inc.

Phone: (800) 787-4348 / (973)257-1999
Fax: (973) 257-1011
Website: www.asaclean.com
E-mail: sales@asaclean.com

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