Purging Compounds

Purging compounds to help you improve efficiency, productivity, and quality.

Modern thermoplastics processors like you know that the right purging compound is capable of improving product quality, reducing downtime, and reducing scrap rate, thus saving you time, money, effort, and materials. Though they are often thought of as an optional way to clean your machines, purging compounds present remarkable opportunities for you and your operation.

Improved Product Quality
Improved Product Quality
Reduced Downtime
Reduced Downtime
Reduced Scrap Rate
Reduced Scrap Rate

The most advanced purging solutions are created to do more than simply clean; they are created to not only quickly address, but also prevent process challenges. Thermoplastic processing customers who want to significantly improve their operations choose Chem-Trend purge compounds because they can be 20 times more efficient at color or material changeover than traditional solutions — providing you greater operating efficiency and lower operating costs.

20x More Efficient
20x More Efficient
at color or material changeover than traditional solutions

A free sample for your specific application may be available.

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Ultra Purge™

The Ultra Purge™ brand of purge compounds continually evolves to address the challenges you face as a thermoplastics processor and is designed to add significant value to your operations. Chem-Trend’s portfolio covers a wide array of process applications, polymers, operating temperatures, and equipment types, allowing for the best match for your specific situation.

Providing class-leading solutions to address challenges you face within your thermoplastic operations, the Ultra Purge™ suite of purging compounds can help you with the following:

  • Color change
  • Material change
  • Scrap reduction
  • Black spot (black speck) removal
  • Preventative maintenance

Purge Innovation

Designed to improve your operations — and help forward the entire industry — Chem-Trend has introduced an extensive range of purging compounds for a wide variety of applications. With a focus on innovation, sustainability, and your specific needs as a thermoplastic processor, this advanced portfolio of purging compounds includes products that are:

  • NSF-registered
  • Nonabrasive
  • Hot runner safe
  • Easy to use
  • Value adding

A free sample for your specific application may be available.

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Do Ultra Purge™ purging compounds release deeply set contamination?

Yes, our highly specialized Ultra Purge™ purging compounds are designed to release deeply set contamination in various forms, such as polymer contamination/carbonization, additives, encrustations, degraded material, and color residue from “dirty” equipment. By utilizing these purging compounds, you can effectively remove the accumulated contaminants and enhance the cleanliness of your equipment.

It’s important to note that the duration of evacuation depends on the level of contamination present in the machine. In cases where contamination or dirt has built up over an extended period of production runs, it may take some time to clear out all the settled contamination. The more contamination there is in the machine, the longer it will generally take to evacuate it completely.

Ultra Purge™ purging compounds are specifically formulated to tackle various types of contamination and facilitate thorough cleaning. They work by softening and carrying away the contaminants as they are purged from the system. The compounds’ effectiveness can help optimize production efficiency, minimize downtime, and improve overall part quality.

For the best results, follow the recommended purging procedures provided by the manufacturer and consider consulting with experts in purging techniques. They can offer guidance on the appropriate usage and help tailor the purging process to your specific equipment and contamination challenges.

Utilize Ultra Purge™ purging compounds to efficiently remove deeply set contamination, achieve a cleaner production environment, and maintain the highest standards of quality in your polymer processing operations.

Are There Universal Purging Compounds Available That Can Work With All Applications And Polymers?

Universal purging compounds that can effectively handle all applications and polymers have specific considerations. Here’s what you need to know:

Compatibility: While some purging compounds claim to have universal compatibility, it is important to note that different polymers have varying characteristics and behaviors during the purging process. Certain purging compounds may perform well with a wide range of polymers, but not all.

Application-specific compounds: Depending on your specific application and the polymers involved, it may be more effective to use purging compounds tailored to the particular requirements. Specialized purging compounds formulated for specific applications or polymer families often deliver optimal results and reduce the risk of material contamination or residue build-up.

Polymer processing conditions: Polymers used in different processes, such as injection molding, extrusion, or blow molding, can have unique processing conditions. Purging compounds that are specifically designed for these processes can provide better cleaning efficiency and reduce downtime.

Consultation and testing: Consulting with purging compound manufacturers or industry experts is recommended to identify the most suitable product for your specific needs. Conducting small-scale trials using different purging compounds can help determine their effectiveness in your particular application and with the polymers you work with.

Tailored purging solutions: In some cases, it may be necessary to utilize a combination of different purging compounds or specific purging procedures to achieve optimal results. Customized purging solutions can be developed in collaboration with experts to address the unique challenges posed by certain applications or polymers.

While universal purging compounds that work seamlessly with all applications and polymers may not exist, there are options available that offer broad compatibility. By considering the specific requirements of your application, consulting with experts, and conducting proper testing, you can identify the most effective purging compound or combination of compounds for your needs.

How Often Do I Need To Use Purging Agents?

The frequency and purpose of purge cycles are influenced by various factors, including material complexity, the number of colors processed, additives, and processing parameters. Purge cycles are typically employed during transitions between colors or materials, but they also prove valuable in addressing unforeseen production issues. For instance, if an operator neglects to set the correct processing temperature for a heat-sensitive polymer for an extended duration, specialized purging agents can assist in resolving such issues.

To maintain the cleanliness of screws, cylinders, and hot runner systems, regular and consistent purges are essential. This proactive approach helps reduce the accumulation of carbon deposits. As a general guideline, performing one purge per week is recommended. If production shutdowns occur, it’s crucial to incorporate purging into each shutdown routine. By adhering to these practices, you can ensure the efficiency and longevity of your equipment.

Is The Use Of Specialized Purging Agents Important?

Specialized purging agents play a crucial role in minimizing both the time and materials needed to effectively remove color and polymer contamination or material degradation from machinery. They offer the ideal solution for transitioning between incompatible polymers or those with significant variations in processing temperatures. These agents are particularly valuable in addressing contamination issues when working with transparent polymers and during color changes, especially in facilities using hot runner molds for injection molding. By employing specialized purging agents, businesses can achieve substantial time and cost savings in their operations.

What Are The Advantages And Disadvantages Of The Different Types Of Purging Compounds?

Understanding the respective advantages and disadvantages of different types of purging compounds is crucial for making informed decisions in the purging processes. Here’s an overview of the key points:

Mechanical purging compounds:

Advantages: Mechanical purging compounds rely on their abrasive properties to remove contaminants and residue from the equipment. They are effective at cleaning stubborn or carbonized deposits, ensuring thorough cleaning.
Disadvantages: The abrasive nature of mechanical purging compounds can pose risks to delicate components or surfaces. Overuse or improper application may cause damage or excessive wear on the equipment. Careful monitoring and control are necessary to prevent adverse effects.

Chemical purging compounds:

Advantages: Chemical purging compounds utilize chemical reactions to dissolve or soften residues, making them easier to remove. They are effective at cleaning a wide range of contaminants and are often suitable for various materials and processes.
Disadvantages: Chemical purging compounds may require longer processing times compared to other types. Improper use or prolonged exposure to certain materials may result in adverse reactions or surface damage. Proper selection and usage are essential to avoid negative effects.

Hybrid purging compounds:

Advantages: Hybrid purging compounds combine the benefits of mechanical and chemical purging. They offer effective cleaning action while minimizing potential risks to equipment. They provide a balance between thorough cleaning and surface protection.
Disadvantages: Hybrid purging compounds may have higher costs compared to single-type purging compounds. They also require proper application techniques to achieve optimal results. Careful consideration of the specific application and equipment is necessary.

Selection considerations:

Application requirements: Consider the specific needs of your purging process, including the type of contamination, material compatibility, and equipment sensitivity. Select a purging compound that aligns with your process requirements.
Safety and environmental considerations: Evaluate the safety and environmental impact of the purging compounds. Some compounds may contain hazardous materials or emit harmful fumes. Ensure compliance with safety regulations and environmental standards.

By understanding the advantages and disadvantages of mechanical, chemical, and hybrid purging compounds, you can make informed decisions in selecting the most suitable option for your purging process. Consider the application requirements, equipment sensitivity, and safety considerations to optimize the purging process while minimizing potential risks.

What Makes Ultra Purge™ Purge Compounds The Preferred Option When Evaluating Cost-Effectiveness?

Ultra Purge™ specialized purging compounds enhance operational efficiency by minimizing setup and change-over durations, as well as decreasing both purging time and material usage during the purging process. These factors collectively lead to significant cost and resource savings. Chem-Trend’s Ultra Purge™ purge compounds are designed to deliver exceptional performance while also reducing cleaning costs.

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