DYPS Series Light Crusher

DYPS Series (Models DYPS-560, DYPS-700, DYPS-800) are designed for light-duty, high-efficiency plastic volume reduction. The series is ideal for recycling sprues, runners, reject parts, and thin-walled materials, helping injection molding, blow molding, and extrusion plants convert scrap into valuable regrind quickly and quietly.

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Application

Injection molding plant – A manufacturer producing 500 kg/day of ABS mobile phone cases uses the DYPS-700 (37 kW, 10 rotor knives) to granulate sprues and rejects. Output: approx. 380 kg/h, directly fed back to the dryer.

Blow molding line – For HDPE bottle scrap (flash and pinch-off waste), the DYPS-560 (15 kW, 6 knives) with a 560×400 mm feed opening runs at 180–220 kg/h, producing very few fines.

Sheet and thermoforming – A packaging plant uses the DYPS-800 (55 kW, 10 knives) to recycle PP edge trim and waste trays. The 800×800 mm hopper accepts large sheets without pre-cutting, achieving output up to 600 kg/h.

Advantages

Feature	Advantage
Large feed openings (560×400 to 800×800 mm)	Accept large sprues, bundled runners, and sheet scrap – no pre-cutting needed
Modular rotor knives (6 or 10)	Choose higher shear for brittle plastics (10 knives) or lower energy consumption for tough materials (6 knives)
Dual counter knives (2 on DYPS-560, 4 on larger models)	Clean, consistent cutting gap; reduces dust and heat generation
Rotor diameter Φ400–600 mm	High rotational inertia, stable operation even with fluctuating feed
Motor power options 15–55 kW	Match energy cost to actual throughput – no oversizing
Reference output: 200–600 kg/h	Validated by plant data (e.g., DYPS-700 processing PA6 sprues, 400 kg/h at 22 kW, 30% energy saving vs. competitors)

Process

Each DYPS granulator passes a 4-stage test before shipment:

Raw material inspection – Blades use certified D2 or SKD-11 steel (hardness HRC 58-62). Cast steel rotor body is X-ray inspected for internal defects.

Sub-assembly testing – Rotor dynamic balancing ≤6.3 mm/s (ISO 1940-1). Bearing housing runout <0.02 mm.

No-load test – Runs continuously for 2 hours at rated speed. Vibration ≤1.8 mm/s; noise: DYPS-560/700 ≤78 dB(A), DYPS-800 ≤82 dB(A).

Material load test – Each model tested with three typical plastics (ABS, HDPE, PC/ABS blend). Output must reach ≥95% of reference value. Example: DYPS-800 with 55 kW motor – tested with PP regrind at 600 kg/h (8 mm screen); gearbox temperature rise <35°C.

Batch records kept for 10 years – each unit ships with a signed test report.

Parameters

Model	Feed Opening Size (mm)	Main Motor Power (kW)	Number of Rotor Blades (pcs.)	Number of Fixed Blades (pcs.)	Rotor Diameter (mm)	Output (kg/h)
DYPS-560	560×400	15	6	2	Φ400	200
DYPS-700	700×700	22–37	6/10	4	Φ500	400
DYPS-800	800×800	45–55	6/10	4	Φ600	600

Q1: Can the DYPS560 process 5 mm thick PC sheet?
A: Yes, but limit feed width to 400 mm and PC thickness ≤6 mm. For frequent thicker material, upgrade to DYPS-700 (larger rotor diameter). One German customer processing 4 mm polycarbonate sheet achieves 210 kg/h – higher than the 200 kg/h reference.

Q2: How often should blades be replaced?
A: Rotor knife life is 300–600 hours, depending on material abrasiveness (glass-filled plastics reduce life by 40%). Counter knives can be reversed once. We stock blades for next-day delivery.

Q3: Is the “400 kg/h” output for DYPS-700 guaranteed?

A: Guaranteed under standard conditions: material bulk density 0.5–0.6 g/cm³ (e.g., ABS runners), 10 mm screen, continuous feeding. With the 22 kW / 6-knife configuration processing fluffy LDPE film scrap, actual output drops to ~250 kg/h – for film, choose the 37 kW / 10-knife version.

Q4: What safety features are included?
A: Hopper interlock switch (stops rotor when opened), motor overload relay, reverse/forward buttons (for clearing jams), and a magnetic bar for ferrous contaminants.

Q5: Can it granulate nylon (PA6) with high moisture content?
A: The granulator itself does not dry material, but the open rotor design prevents “clumping”. For hygroscopic resins (PA, PC), we recommend pre-drying before feeding or opt for a hopper hot-air purge device.

Q6: How does the DYPS compare to a single-shaft shredder?
A: The DYPS is a high-speed granulator – best suited for small-to-medium scrap (thickness <8 mm). For purgings, large blocks, or thick parts (20+ mm), use a shredder. Many customers place the DYPS-800 downstream of a shredder for final fine-size reduction to 6 mm.