Your Mold's Cooling Channels Are Clogged – And It's Costing You Thousands

In plastic injection molding, cooling represents up to 80% of the total cycle time. When mold cooling channels are clean, heat transfers efficiently, parts solidify quickly, and production runs smoothly. But over time, these channels accumulate mineral scale, rust, sludge, and even biological growth like algae. The result? Longer cycle times, defective parts, and lost profits .

Industry research shows that just 0.3mm of scale inside cooling channels can reduce heat exchange efficiency by 21% . This invisible layer acts as insulation, preventing proper cooling and forcing operators to extend cycle times to compensate. What seems like a minor issue translates directly to reduced hourly output and increased per-part costs.

How Does a Mold Channel Cleaning Machine Work?

A mold channel cleaning machine—sometimes called a 'dialysis machine for molds'—uses advanced physical cleaning technology to restore cooling performance without damaging the mold . The system combines high-pressure water and compressed air, releasing them in controlled pulses. These pulses generate microscopic cavitation bubbles inside the pipeline. When these bubbles collapse, they create powerful micro-shockwaves that break apart scale, rust, and other deposits adhered to channel walls .

The cleaning process typically operates in both forward and reverse directions, ensuring complete removal throughout complex cooling circuits—including long, narrow, or conformal cooling channels that manual methods cannot reach .

The Consequences of Neglected Cooling Channels

When cooling channels become restricted, manufacturers experience:

Defective products: Uneven mold surface temperatures cause shrinkage and warpage .

Lower efficiency: Reduced heat exchange means longer cooling cycles and slower throughput .

Higher costs: Increased defect rates and extended production cycles raise overall manufacturing costs .

Unplanned downtime: When cooling performance degrades to critical levels, production must stop for maintenance.

The Mold Channel Cleaning Solution

At Guangzhou Yizai Intelligent Technology Co., Ltd., we have been developing mold maintenance solutions since 2017. Our DB Series mold channel cleaning machines use proprietary water-air pulse technology with bi-directional flushing to remove scale and rust efficiently . Key features include:

Independent dual-tank design: One tank for clean water, another for food-grade citric acid cleaner (economical and environmentally friendly) 

PLC and touchscreen controls: One-button start, no dedicated operator required 

Automatic water replenishment: Connects directly to the water supply 

In-place cleaning: No mold removal needed—clean while the mold stays on the injection machine 

The Yizai Advantage

Guangzhou Yizai Intelligent Technology Co., Ltd. is a national high-tech enterprise with multiple independent invention patents and utility model patents . Our equipment features components from globally recognized brands: Keyence ultrasonic flowmeters, Mitsubishi PLCs and touchscreens, Schneider power supplies, and Grundfos pumps . Our customers include BYD Auto, Foxconn, Gree, Haier, Midea, Coca-Cola, Nongfu Spring, Denso, Toyota Engine, and AISIN Automotive Components .

Located in Huadu District, Guangzhou—within 5 kilometers of Guangzhou Baiyun Airport and Guangzhou North Railway Station—we offer rapid shipping and responsive support to customers worldwide.

Don't let clogged cooling channels drain your profitability. Contact Guangzhou Yizai Intelligent Technology Co., Ltd. today to learn how our mold channel cleaning machines can restore your cooling efficiency and boost your bottom line.

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