Mechanical Purge

Effective across a wide variety of applications.

• Use the machine’s power to do the work - Most mechanical purging compounds rely on shear force and differences in material viscosities to clean injection molding machines and extruders.
• Some mechanical purges also rely on material affinity – they are attracted to carbon and/or other plastic resins. They should not have affinity for metal.
• There are no chemical reactions.
• There is no soak time required.

Chemical Purge/Foaming Purge

Can be effective in areas of low pressure where mechanical purges are sometimes less effective.

• A chemical reaction occurs in the barrel and/or die when the purge makes contact with the plastic or carbon in the barrel.
• This reaction attempts to break the chemical bonds of the contaminant, aiding in removal.
• Require soak times of 5-30 minutes.
• Foaming agents are often added.