Clean Machines
Aren’t Optional.
They're Essential.

Choosing the right purging compound depends on several factors, including your manufacturing process, resin type, processing temperatures, equipment configuration, and production goals. Different Asaclean® grades are optimized for specific applications such as injection molding, extrusion, blow molding, hot runner cleaning, and contamination removal. Working with an Asaclean® Purging Expert can help ensure you select the most effective solution for your operation and maximize efficiency.

Purging compounds should be used during color changes, material changeovers, contamination events, machine startups, shutdowns, preventative maintenance, and screw pulls. Establishing a regular purging program helps reduce scrap, minimize downtime, and maintain consistent product quality throughout production.

The amount of downtime saved varies by application, but many manufacturers experience immediate improvements after implementing a purge program. By reducing changeover times, startup scrap, contamination issues, and manual cleaning requirements, facilities can save hours of production time and significantly improve overall equipment efficiency. Many companies recover their initial investment quickly. Purge compounds pay themselves and produce extra saving when used correctly.

Asaclean® is used across a wide range of industries, including automotive, medical device manufacturing, packaging, consumer products, aerospace, and general industrial manufacturing. Any facility that performs injection molding, extrusion, or blow molding can benefit from implementing a purging program to reduce waste, improve quality, and streamline production.

The ideal purging frequency depends on your production schedule and application. As a best practice, manufacturers should purge during every color or material change, at scheduled maintenance intervals, and before extended shutdowns. Many facilities also implement preventative purging programs to proactively reduce contamination and avoid costly unplanned downtime.

Black specks and carbon contamination are typically caused by degraded resin buildup inside the screw, barrel, hot runners, dead spots, or other low-flow areas within the machine. Over time, residual material can overheat and break down, leading to defects in finished products. Regular preventative purging helps remove these deposits before they become larger contamination issues.

Both mechanical and chemical purging compounds are effective for hot runner cleaning, and purging concentrates are another strong option. The right choice depends on factors such as resin compatibility, mold configuration, flow characteristics, and whether the process is open or closed mold.

Purging concentrates, which are blended with a carrier resin, provide efficient cleaning while matching processing conditions and are commonly used in hot-runner applications.

Because hot runner systems are sensitive, precision components, selecting the proper purging solution is critical. A technical representative can help identify the most efficient option for your specific process.