Zhiyi Machine: Your Partner for Plastic Size Reduction Equipment

Engineering Excellence in Plastic Size Reduction

Zhiyi Machine is a specialized manufacturer of industrial plastic size reduction equipment headquartered in Dongguan, Guangdong Province, China. Our product range encompasses the complete size reduction chain: from primary shredding of bulky plastic waste to ultra-fine powder production for advanced manufacturing applications.

Our Product Range

Plastic Shredders: Single shaft and double shaft configurations with motor power from 30 kW to 2×55 kW. Engineered for high-torque, low-speed primary size reduction of plastic pipes, films, woven bags, barrels, pallets, tires, and mixed industrial waste. Output sizes from 40-150mm depending on configuration.

Plastic Crushers: Heavy-duty and universal crusher models with claw-type and flat-type blade options. Designed for secondary size reduction producing uniform 6-20mm regrind suitable for direct re-feed into extrusion and injection molding processes. Throughput from 300 to 1,200 kg/h.

Plastic Pulverizers: Turbo-type and disc-type mills for fine powder production. PVC pulverizers with integrated water cooling produce 10-80 mesh powder for pipe and profile recycling. PE/LLDPE disc mills with optional cryogenic cooling deliver 20-80 mesh powder for rotational molding and masterbatch applications.

Quality and Certification

All Zhiyi Machine equipment is manufactured to comply with CE safety standards. Every machine undergoes full load testing before shipment, with inspection of all electrical systems, safety interlocks, blade clearances, and throughput performance. We provide complete CE certification documentation with each delivery to ensure smooth customs clearance and regulatory compliance in destination markets.

Global Service and Support

We serve customers in over 50 countries with comprehensive support including:

• Pre-sales consultation: Material testing, configuration recommendations, and detailed quotations based on your specific requirements.
• Installation support: Detailed foundation drawings, installation manuals, and optional on-site commissioning by our engineering team.
• After-sales service: 24/7 technical support via WhatsApp, email, and video call. Genuine spare parts supply with detailed ordering documentation.
• Warranty: Standard warranty on all equipment with extended warranty options available.

Our Facility

Located in Chang'an Town, Dongguan City—one of the world's most significant industrial manufacturing hubs—Zhiyi Machine benefits from a mature supply chain, skilled workforce, and excellent logistics infrastructure. Our location in the Pearl River Delta provides efficient access to major shipping ports including Shenzhen, Guangzhou, and Hong Kong for reliable international delivery.

Partner With Us

Whether you are setting up a new recycling operation, expanding an existing facility, or upgrading aging equipment, Zhiyi Machine has the expertise and product range to support your goals. Contact our team today to discuss your requirements and receive a tailored quotation.

How the Three Stages Fit Together

Size reduction is a chain, and the chain is only as good as its weakest link. A shredder that produces flake too coarse for the granulator starves the second stage; a granulator that cannot keep up with the shredder backs material up into the hopper; a pulverizer asked to accept 40 mm flake produces coarse, uneven powder and wears its disc prematurely. The three stages are usually specified together for that reason.

• Primary — shredding: single shaft and double shaft machines take whole parts, pipe, bales and purgings down to 40–150 mm.
• Secondary — granulating: universal and heavy duty crushers cut that flake to a 6–20 mm regrind that extrusion and injection equipment will accept.
• Tertiary — grinding: MPD and MF disc pulverizers take regrind of 10 mm and below to powder between 10 and 150 mesh.

Not every plant needs all three. A moulder regrinding its own sprues needs one granulator and nothing else. A rotomoulder producing powder from post-industrial PE needs all three, and the specification of each depends on the two around it.

Selecting Equipment by Material

Material behaviour drives machine choice more than any specification sheet does.

• HDPE — pipe, purgings, blow mouldings and bottle scrap. Tough and abrasion-resistant, so a ram-fed single shaft shredder with a screen does the primary work well. Downstream, a heavy duty crusher handles the thick sections.
• PP — similar cutting behaviour to HDPE but more heat-sensitive; regrind from injection scrap is usually fine in a universal crusher.
• PVC — rigid pipe and profile. Dense, abrasive and heat-sensitive, which is why claw blades and water-cooled pulverizing are the standard combination. See the PVC pipe recycling process for the full line.
• LLDPE and LDPE film — the awkward feedstock. Film wraps rotors and resists tearing, so it needs a ram feeder and a screen-controlled machine rather than a high-speed granulator.

Where the stream is mixed and changes week to week, a combo configuration is usually worth the extra cost, because it lets the operator switch cutting action instead of compromising. The comparison in choosing a shredder by material goes through this in more detail.

Frequently Asked Questions

Do I need all three machines — shredder, crusher and pulverizer?

Only if your product is powder. Regrind for extrusion or injection stops after the crusher. Powder for rotational moulding, PVC compounding or masterbatch needs the third stage, and the pulverizer will require feed of 10 mm and below, which means the first two stages are not optional.

Can I send material samples for testing before ordering?

Yes, and it is worth doing. Throughput and powder fineness both depend on the actual material rather than the polymer name — a mineral-filled PVC compound behaves very differently from clean pipe regrind on the same machine. Testing with your own material is the only way to get a capacity figure you can plan around.

What information do you need to prepare a quotation?

Material type and form, required throughput in kg/h, target output size or mesh, the largest piece in the feed, and your available power supply and voltage. Motor configuration and screen or disc specification are fixed at the point of order, so those decisions need to be made before the machine is built.

How long does delivery take?

Standard models ship in roughly 25–35 business days. Custom configurations — special hoppers, non-standard voltages, integrated conveying — take longer, and the additional time depends on what is being changed.

What does after-sales support cover?

Technical support by WhatsApp, email and video call, plus supply of genuine spare parts with ordering documentation. Wear parts — blades, screens, discs — are the items plants reorder, and those are stocked rather than made to order.

Are the machines CE certified?

Equipment is manufactured to comply with CE safety standards, and every machine is load tested before shipment — electrical systems, safety interlocks, blade clearances and throughput. CE documentation ships with each machine for customs clearance.