Purging Compounds for Blown Film

 

Maximize Output. Minimize Waste. Purge Smarter.

In blown film manufacturing, maintaining consistent output and minimizing downtime are critical. Material buildup, contamination, and long changeover times can disrupt your process and inflate costs.

That’s where a high-performance purging compound for blown film makes all the difference.

Why Purging Matters in Blown Film Production

Blown film extrusion lines often run continuously and at high volume. This makes them especially vulnerable to contamination. Residual resin and colorant can degrade or adhere to the screw and barrel, and extrusion dies, leading to:

• Black specks and streaks in film products
• Haze and defects
• Higher scrap rates
• Slower startups and increased maintenance

A purging procedure tailored to the blown film process, and utilizing a purging compound suitable for the blown film process, not only removes contamination from the machine components, but also improves production uptime and product consistency.

Designed for Blown Film Equipment

Purgex offers purging compounds suitable for blown film equipment that deliver fast, thorough, and safe cleaning of your system. Our purging compounds are engineered for:

• Blown film extrusion lines
• Single- and multi-layer sheet extrusion
• To thoroughly remove resins such as HDPE, LDPE, LLDPE, PP, EVA, PA, EVOH, etc.

Blown Film Purging Compounds That Work

Each Purgex grade recommended for blown film is designed to address the challenges unique to this production method:

• Maintain bubble stability while purging blown film applications
• Clean out extrusion dies with tight clearances
• Remove colorants and degraded materials without disassembling the extruder
• Minimize material loss during startup

We provide hybrid chemical/mechanical purging compounds designed to maximize your performance goals. These hybrid purging products expand when heated and are ideal for reaching low-flow or stagnant areas in barrels and on screws.

Preventive Maintenance That Pays Off

Incorporating regular purging into your preventative maintenance routine ensures cleaner transitions, less manual cleaning, and reduced wear on your extruder components.

Blown film processors using Purgex benefit from:

• Faster changeover times between materials or colors
• Lower risk of black specks or contamination in final product
• Reduced scrap rates and associated costs
• Longer tool life

By using a purging compound routinely, your team avoids relying on suboptimal purging with production resin or regrind, which masks deeper contamination issues, causing problems in the future.

Tailored Support and Purging Procedures

The right purging compound is only part of the solution. That’s why Purgex supports customers as needed with custom purging procedures, training resources, and technical advice. Our team works with your team to:

• Select the optimal purging compound for your materials and process
• Ensure adherence to correct purging procedure and recommended machine settings
• Train new staff and retrain teams as needed

From cleaning extruder barrels and screws to clearing multi-layer extrusion dies, we understand that blown film operations are complex, and we’re here to simplify the purging process as much as possible.

Purge with Confidence

Whether you’re manufacturing high-clarity plastic film or multi-layer film packaging, Purgex gives you the results your operations demand. Our commercial purging compounds are trusted across industries for their cleaning power, versatility, and cost savings.

Ready to reduce downtime and eliminate contamination in your blown film extrusion line?

Explore our purging compound solutions today and find out how the right purge strategy can transform your production.

Applications:

• Blown film
• High-output lines requiring precise sheet thickness and dimensional stability

Trust Purgex for your most demanding blown film applications because clean machines make better products.