Ultrapurge

Ultra Purge products are ready-to-use or concentrated chemical, mechanical or hybrid chemical/mechanical purging compounds designed to increase productivity during color and material changes, start-ups and carbon removal procedures.Ultra Purge products are recommended by major machine and colorant producers as the most cost-effective and efficient solution for cleaning plastic processing machines. Contaminants are safely ejected without harming the screw, barrel or hot runner. Expanding agents in most Ultra Purge products allow the material to clean even the hardest-to-reach areas inside your machines.  Ultra Purge is effective for color changes, material changes and the removal of black specks.  Ultra Purge works at the processing temperature of the production material. Increase efficiency and lower costs Safe for the equipment Food contact compliant Safe for the operator Environmentally responsible

Purging Compound Introduction

There are two major classes of purging compounds in the market. One is referred to as mechanical or abrasive purging compounds. These are compounds where the cleaning process is based on the mechanical action of hard particles, e.g., glass fibers. The other type of purging compounds is chemical purging compounds. With these, the cleaning process relies on chemical additives that initiate some form of chemical reaction.

Abrasive purging compounds provide fast and reasonably effective cleaning, but they can also damage screws and cylinders/barrels. It is dangerous to use them in hot runner systems, through screen packs or melt pumps. Abrasive purging compounds are more difficult to evacuate from the machine, creating greater potential for longer-term damage as well as for production-run contamination and scrap creation.

Chemical purging compounds are safer for the equipment and may also be processed through screen packs and melt pumps. They are universally usable in hot runner systems and can be injected in cavities when a purge compound with an appropriately suitable MFI is selected. Because they are safer for the equipment, they are also more suitable for using as part of a preventative maintenance program as opposed to only as a “problem-solving product.”

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