Plastic recycling line selector: find the right configuration

How the selector decides

• Dirty film and woven bags (agricultural, post-consumer, raffia) go through a washing line first: 500, 800, 1,000, 1,500 or 2,000 kg/h. The washing steps are set by the dirt level: sand, soil, impurities, labels. Heavily soiled material gets repeated pre-washing and a high-pressure washing tank. The squeeze dryer brings moisture to 1–3 %. A standard line uses 15–20 t/h of water, with a recommended 25 m³/h water treatment system.
• Washed film flakes are pelletized on an SJ two-stage line (melt and degas, then filter again and pelletize), SJ100 to SJ200, 250–1,500 kg/h. Heavy contamination, or outputs from about 800 kg/h, call for a laser filter: FLS-400 (200–300 kg/h), FLS-500 (400–500), FLD-400 (600–800), FLD-500 (1,000–1,500).
• Clean, dry film scrap that does not need washing goes to the ML series with cutter-compactor, ML75 to ML180, 100–1,200 kg/h depending on the polymer.
• Rigid plastics run on SJ single-stage lines when clean and two-stage lines when printed or contaminated. Large parts are shredded first on a single-shaft (200–1,500 kg/h) or XD-E double-shaft shredder (500–1,500 kg/h); the material decides which one.
• HDPE bottle flakes for food-grade or odour-sensitive uses run on a two-stage line with vacuum degassing and an 80–100 μm hydraulic screen changer, as in the SJ110 + TSSK75 milk bottle project.
• Washed PET bottle flakes run on the SJ160 PET line: 200 kW, 800–1,000 kg/h, hot dehumidified-air pre-drying, input moisture ≤ 1.0 %, IV loss below 0.04 dL/g.
• Recycled plastic with fillers, glass fibre or pigment runs on the single screw + twin screw line SJ110 + TSSK75 (600 kg/h). Compounding with virgin resin runs on VJJ twin-screw extruders, 20–5,000 kg/h.

Plastic recycling machines by Jiangsu PURUI, manufacturing since 2006; twin-screw extrusion by VJJ. Contracts are signed directly with the manufacturer; Torqplas handles specification, material trials and project follow-up.