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DYNA-PURGE® P

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Product Information Sheet

Designed for Hot Runner Systems

DYNA-PURGE P is a non-abrasive, non-chemical "engineered" thermoplastic purging compound, formulated to have a natural flow through the barrel and hot runner system of the injection molding machine. A non-melting but softening thermoplastic scrubs the screw and barrel, while the carrier matrix flushes away impurities.

FEATURES & BENEFITS OF DYNA-PURGE^® P

• Excellent for color changes, resin changes, preventative machine maintenance, and before manual cleaning
• Developed for purging through hot runner systems with a minimum clearance of .025 inch (.65 mm)
• Effective through a wide temperature range 320°F to 575°F (160°C to 302°C)
• Easy to use — no process adjustment necessary — use at the resident resin processing temperature and RPM speed
• Non-abrasive, non-melting but softening thermoplastic, which thoroughly loosens carbonized and degraded resin, allowing it to be flushed out of the system
• Safe, non-hazardous, with no chemicals — ingredients are FDA compliant
• Heat stable — recommended during shutdown and start-up
• Low "cost per purge" — only small quantity needed to be effective
• No mixing required, simply use "as is"
• Unlimited shelf life

Dyna-Purge is the top performing purging compound on the market today. The product line offers superior cleaning and economic value over in-house methods and other commercial purging compounds. We invite you to sample Dyna-Purge at no charge, so you can prove it to yourself. Dyna-Purge, the industry leader for over 20 years!

SUGGESTED OPERATING PROCEDURES: DYNA-PURGE^® P

SAFETY FIRST: Before performing this procedure, it is the machine operator's responsibility to be familiar with the equipment in use, to wear the appropriate personal protective equipment, and to make sure that unauthorized persons are clear of the affected area.

STEP 1 - PROCEDURE FOR THE BARREL AND SCREW

1. Maintain temperature / RPM settings for resident resin.
2. Retract nozzle away from mold, leaving ample room for purge to exit nozzle.
3. Thoroughly clean the hopper.
4. Empty barrel and starve the screw of the resident resin; leave screw forward.
5. Set machine shot size between 50% and maximum allowable setting.
6. Rotate the screw and aggressively meter Dyna-Purge, one scoop at a time, into empty hopper or side port until screw retracts to appropriate shot size setting. When the screw reaches the shot size set point, move the screw forward and repeat the process until the purge is clean and free of contamination.
   Note: On some open nozzle machines, the screw may not move back while rotating/feeding Dyna-Purge into barrel. If so, continually purge Dyna-Purge through nozzle until purge is clean and free of contamination. (Actual amount used depends on the condition of the machine prior to purging.)

STEP 2 - PROCEDURE FOR THE HOT RUNNER SYSTEM

1. Move the nozzle to the mold base.
2. Bring the temperature of the hot runner system to approx. 500°F (260°C).
3. Meter Dyna-Purge, one scoop at a time, into the empty hopper or side port.
4. With the mold plate open, begin to purge.
5. Continue to add Dyna-Purge until the purge is clean and free of contamination. Empty barrel and mold and starve the equipment of Dyna-Purge.
6. Adjust temperature settings for your next production resin.
7. Flush out Dyna-Purge residue with next resin.
8. Start to make parts with next resin.

YOUR EQUIPMENT IS NOW READY FOR YOUR NEXT PRODUCTION RUN!

SEE OUR SUGGESTED PROCEDURES FOR SHUTDOWN & START-UP

Notice: The information contained herein is based on what we believe to be reliable data, but SHUMAN PLASTICS, INC.MAKES NO WARRANTIES EXPRESS OR IMPLIED, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. Because Shuman has no control over the use to which others may put the product, it does not suggest or represent that the same results as these referred to herein will be obtained by another user. Each user of the product and the compositions mentioned herein should make his or her own tests prior to purchase to determine the product's suitability for his or her own particular uses. Nothing contained herein is to be construed as a recommendation for the use in violation of any existing patent, foreign or domestic, or of applicable laws and regulations.

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