Continuous Self-Cleaning Laser Filter

Product Overview

• Truly continuous online filtration — no production stop, no screen replacement cycles
• Minimal material loss — only concentrated contaminants are discharged, not good melt
• Long-life scraper design — no blade-to-screen contact wear, far lower wear-part costs
• No melt carbonization — short residence time and continuous scraping eliminate dead-zone degradation
• Consistently high melt purity — ideal for food-grade requirements

Core Working Principle

• Two groups of filter plates work simultaneously to enlarge effective filtration area and shorten melt flow path.
• Mesh plates rotate at low speed; stationary short scrapers tightly fit mesh-plate surface to scrape off contaminants.
• Scraped impurities are conveyed by independent discharge screw; cooling structure installed at screw outlet discharges impurities in solid-state.
• Continuous filtration & automatic slag discharge, no interruption to extrusion production and nearly no pressure fluctuation.

Key Technical Advantages vs Conventional S-Type Blade Filter

Field Reference Case: Japan Resource Recycling Co., Ltd (PE Film Pelletizing Line)

Before Retrofit 350 model screen changer with 40-mesh screen pack, screen replacement required every 15 minutes.

After Retrofit Model-500 mesh-less self-cleaning filter with 60-mesh laser-welded mesh plate.

• 1,000-ton throughput per laser mesh — advanced laser-drilled mesh delivers a service life of up to 1,000 tons processed, several times longer than standard woven screens
• +1,300 kg daily output — non-stop filtration and fewer change-overs unlock extra production every single day
• 1,400 kg less daily waste — back-flush regeneration and precise contaminant discharge dramatically reduce good-material loss
• 100 filter screens saved per day — reusable laser meshes cut consumable usage and inventory costs to a minimum
• +5 JPY/kg product price premium — cleaner melt means higher-purity pellets that command a visible market premium

Test Performance for Heavily Contaminated Feedstock

Test feedstock 1：PP+PE+PS mixed waste Contaminants: aluminum foil, wood chips, glass, paper, sand, glass fiber Actual measured slag discharge ratio: 1 %

Technical Specifications

Main Customer Benefits

✅ Eliminate frequent screen-changing shutdown, maximize production uptime

✅ Minimize clean-material loss during slag discharge, improve raw-material utilization

✅ Reduce screen-consumption cost and labor cost for screen replacement

✅ Low-shear running avoids melt carbonization; guarantee stable quality for food-grade PCR pellets

✅ Support heavy-contamination post-consumer plastic; compatible with rigid flakes & film recycling pelletizing lines

✅ Can be configured as primary-stage or secondary-stage filtration unit for existing extrusion-pelletizing system