Plastics Injection Molding

What Type of Purging Compound Is Best for Plastics Injection Molding?

Cost-effective and flexible, injection molding is one of the most widely used processes in plastics manufacturing. Not only is it exceptionally efficient for high volume production, but injection molding also creates consistency and precision for a diverse set of thermoplastics materials.

Despite its many benefits, there are issues that can occur during the injection molding process, including long color changeover and residue contamination. The common costly consequences are:

• Production loss
• Increased cleaning and maintenance downtime
• Poor-quality end products
• Excessive material waste
• Equipment damage

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What is the solution to these common thermoplastics processing problems?

High-quality purging compounds, like Chem-Trend’s innovative Ultra Purge™ line, effectively and efficiently purge injection units and hot runner molds of all types of residue and are the answer to many common injection molding issues. They cover a wide array of process applications, polymers, operating temperatures, and equipment types to address specific issues. The right purging compound can:

Speed up color and material changeovers

Switching from one color to another is notoriously difficult — unless you use the right purging product. Pigmented residue from a previous material can remain in the injection unit and hot runner systems, contaminating the next product with streaks, bleeding, specks, oxidation, and other types of contamination. A quality purging compound like Ultra Purge™ is made to completely remove color remnants from the screw, barrel, and hot runners, so color changes are quicker, easier, and, most importantly, less expensive.

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Remove carbon and other contaminants from equipment

In addition to colorants, carbon deposits can also build up in injection molding equipment and create challenges. Effective purging compounds such as Ultra Purge™ feature safe, hybrid chemical technology (chemical and mechanical) to soften, break down, and easily remove carbon, resins, and other contaminants from injection units and hot runners. This makes for simpler and stress-free maintenance, yielding an increase in total production.

Minimize costly material waste

Excessive scrap is a major profit killer within thermoplastics processing. When color or other contamination issues occur, the resulting product is often defective and unusable, requiring disposal. The right purging compounds can effectively clean the mold to completely remove all residual color and carbon materials. They can also minimize the amount of scrap commonly produced during machine startups.

Create more consistency and less downtime

From start to finish, quality purging compounds can create a smoother, more consistent operation. Their effective cleaning power allows equipment to work more efficiently with fewer stoppages for cleaning and other general maintenance. Ultra Purge™, for example, is made to clean even the hardestto-reach areas of a mold and the rest of the machine that manual cleaning can miss.

Extend the life of your equipment

Purging compounds can protect one of your biggest manufacturing investments: your machine. Safe for screws, barrels, and hot runners, they keep your injection molding equipment clean and in high working order, so cycle times are more efficient in the short term and fewer repairs and part replacements are required in the long-term. This creates more reliability and fewer surprises, so you can get the most out of your machine and continuously move forward to meet your goals.

Is Ultra Purge™ the right solution for you?

It’s very likely. That’s because Chem-Trend’s Ultra Purge™ line is made to meet the unique needs and challenges of a variety of applications and industries, increasing your productivity and creating high-quality finished products. All while being safe for operators with no-to-low odor and no harmful fumes.

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