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Buying guides

Short guides that answer the questions buyers ask before they request a quotation.

Recycling line selector (interactive)
Enter material, dirt level and output; get an indicative washing, pelletizing and filtration configuration.
How to choose a PP woven bag washing line
What makes woven bags and jumbo bags hard to wash, which stages a washing line needs, how to size capacity, and what to send for a quotation.
ML or SJ pelletizing line: which one fits your material?
How film and rigid plastics feed differently, when to choose the ML or the SJ series, when you need two-stage pelletizing, and output by model.
Filler masterbatch on a twin-screw extruder: how specific torque sets your loading and output
Why CaCO3 filler masterbatch is torque-limited, what 11.3 vs 14 Nm/cm³ means in practice, how to feed fine powder, and what to send for a quotation.
Strand, water-ring, underwater or air-cooling die-face cutting: which pelletizing system fits your extruder?
How the four main pelletizing systems work, which materials each one suits, the trade-offs in cost and labour, and what to send for a quotation.
Clear polycarbonate on a twin-screw extruder: black specks, yellowing and output
Why PC is hard to compound, what causes black specks and yellowing in clear grades, how torque, screw clearance and barrel temperature control help, and what to send for a quotation.
Agricultural film recycling machine: washing and pelletizing line
How to recycle dirty agricultural and greenhouse film: shredding, washing set up by dirt level, squeeze drying to 1–3 % moisture, and SJ two-stage pelletizing with laser filtration.
HDPE bottle recycling line: from milk and detergent bottles to pellets
How to recycle HDPE milk and detergent bottles: crushing, washing, SJ single or two-stage pelletizing, degassing and filtration, with a food-grade milk bottle example.
How to choose a screen changer for recycled PE and PP
Plate, piston or self-cleaning? How contamination, mesh size and output decide the screen changer on a recycled PE/PP pelletizing line.

Tell us your material and target output

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