Where Zhiyi machines are used — pipe and profile extrusion, rotational moulding, WPC and SPC flooring, masterbatch, injection and blow moulding, film and woven bag recycling — with the process chain and the series that carries each stage.
Zhiyi Machine builds plastic size reduction equipment for three application families: primary shredding with the ZSS, ZDS and ZDS-HD series, secondary granulating with the ZPC and ZPC-HD series, and fine pulverizing with the MPD and MF series. The table below maps common plastic waste streams — pipe and profile, film and woven bag, rotomoulding powder, WPC/SPC flooring, masterbatch and injection scrap — to the process chain and the series that carries each stage. Output sizes quoted here follow the published machine specifications: 40-150 mm after shredding, 6-20 mm after crushing, 10-150 mesh after pulverizing.
Each scenario below lists the process chain that carries it. Material-specific configuration guidance is on the solutions page.
End-to-end lines for post-industrial and post-consumer plastic waste. Shredding reduces bulky input, crushing produces clean regrind for pelletising, and pulverizing produces powder for direct re-use in extrusion or moulding.
Shred → Crush → Pulverize
HDPE, PVC and PP pipes, window and door profiles, and skirting. Whole sections are shredded first, ground into uniform regrind, and — for PVC — milled into powder that goes back into co-extrusion as a closed loop.
Shred → Crush → Pulverize
Rotomoulding grades need powder that flows and sinters evenly. Feed is limited to 10 mm, and the MF series produces 10-120 mesh with an integrated vibration screen classifier; the MPD series covers 60-150 mesh.
Crush → Pulverize (MF)
Wood-plastic and stone-plastic composite flooring uses PVC or PE powder at 40-150 mesh. Thick board and profile offcuts are best reduced by the ZPC-HD claw-rotor crusher before milling, with water cooling on the grinding chamber to limit heat build-up.
Crusher → Pulverizer
Pigment carriers, additives and polymer compounds are ground to a controlled particle size so they disperse evenly in the final product. The MPD and MF disc mills cover 10-150 mesh with adjustable plug-bolt settings.
Pulverize (disc mill)
Sprues, runners, reject parts and edge trim are recovered in-line. A ZPC crusher beside the moulding machine produces 6-20 mm regrind for immediate re-feed; heavy-duty ZPC-HD models take thick purgings and large reject parts.
Crush (in-line)
LDPE and LLDPE film, agricultural film, shrink wrap, woven sacks and jumbo bags (FIBC). The hydraulic ram on the ZSS keeps light material against the rotor, and the ZDS combo is specified where bales and sacks have to be gripped before size reduction.
Shred → Crush
Pallets, drums, IBC containers, bumpers and mixed plastic fractions. Hook-type rotors on the ZDS-HD resist contamination and reduce volume to 40-150 mm for transport or further processing.
Shred (ZDS-HD)
Find your material or input form in the first column, then follow the process chain. Series names link to the relevant machine range.
| Material / input | Typical form | Process chain | Recommended series | Typical output |
|---|---|---|---|---|
| PE / PP / PVC pipe, profile, sheet | Whole sections, offcuts | Shred → Crush | ZSS / ZDS → ZPC | 6-20 mm regrind |
| PVC pipe, profile, skirting | 6-20 mm regrind | Pulverize | MPD | 60-150 mesh powder |
| PE granules and flakes for rotomoulding | 10 mm or less | Pulverize | MF | 10-120 mesh powder |
| Film, woven sack, jumbo bag (FIBC) | Rolls, bales | Shred → Crush | ZSS / ZDS → ZPC | 6-20 mm regrind |
| Rigid PVC, WPC, PC sheet (thick wall) | Thick-section scrap | Crush | ZPC-HD | 8-20 mm regrind |
| Injection sprues, runners, reject parts | Small, mixed | Crush | ZPC | 6-20 mm regrind |
| Pallets, drums, IBC containers, bumpers | Bulky, high volume | Shred | ZDS-HD | 40-150 mm chips |
| Mixed plastic waste and MSW plastic fraction | Contaminated, mixed | Shred | ZDS / ZDS-HD | 40-150 mm chips |
| Masterbatch and compound carriers | 10 mm or less | Pulverize | MPD / MF | 10-150 mesh powder |
| EVA, PA, PS, ABS, PC engineering grades | 10 mm or less granules | Pulverize | MPD / MF | 10-150 mesh powder |
Three stages, one particle size chain. Most lines use one or two of them; a closed-loop extrusion plant usually uses all three.
Primary reduction of whole pipe, bales, pallets and bulky scrap to a transportable chip. Hydraulic ram feeding on the ZSS, counter-rotating hook blades on the ZDS-HD.
ZSS · ZDS · ZDS-HD | 40-150 mm Stage 02Secondary reduction to uniform regrind that can be washed, pelletised or fed straight back to a moulding machine. Flat paddle rotor on the ZPC, claw rotor on the ZPC-HD.
ZPC · ZPC-HD | 6-20 mm Stage 03Fine grinding of 10 mm-or-less regrind into powder for rotomoulding, masterbatch and closed-loop extrusion. Disc diameter 350-800 mm, output 10-150 mesh.
MPD · MF | 10-150 mesh
ZSS, ZDS and ZDS-HD — primary size reduction from 200 to 5000 kg/h for pipe, bales, pallets and mixed plastic waste.
View the shredder range →
ZPC and ZPC-HD — secondary granulating from 150 to 2200 kg/h into 6-20 mm regrind for washing, pelletising or re-feed.
View the crusher range →
MPD and MF disc mills — fine grinding from 50 to 1200 kg/h into 10-150 mesh powder for rotomoulding and compounding.
View the pulverizer range →Plastic pipe and profile recycling normally runs in two or three stages: a ZSS or ZDS shredder reduces whole sections to 40-100 mm, a ZPC or ZPC-HD crusher produces 6-20 mm regrind, and for PVC an MPD pulverizer grinds the regrind to 60-150 mesh powder.
Film and woven bag are handled by a shredder with a hydraulic ram feeder (ZSS) or by the combo ZDS, which grips low bulk density material. Rigid pipe, sheet and thick-wall scrap are better reduced by a ZPC-HD crusher with a claw rotor. The two feed types usually share the same crusher downstream.
Following the published specifications: 40-100 mm with ZSS, 40-120 mm with ZDS and 40-150 mm with ZDS-HD after shredding; 6-20 mm with ZPC and 8-20 mm with ZPC-HD after crushing; 60-150 mesh with MPD and 10-120 mesh with MF after pulverizing.
Throughput depends on motor power, screen mesh or blade spacing, and the bulk density of the material being processed. Across the range the published figures are 150-1000 kg/h for ZPC, 200-2000 kg/h for ZSS, 500-1800 kg/h for ZDS, 200-5000 kg/h for ZDS-HD, 700-2200 kg/h for ZPC-HD and 50-1200 kg/h for the pulverizers. Actual output varies with the material.
Zhiyi Machine focuses on plastic size reduction. Other streams — wood, rubber, cable and e-waste, medical waste or construction debris — are assessed individually and quoted case by case.
Yes. Screen mesh, blade spacing, rotor type, voltage, feeding and conveying, and the degree of automation (auto feeding, auto sorting, continuous production package) are configured against the material and the required output.
Send us your material type, input condition and required output size — our engineering team will recommend the process chain and provide a quotation.