Beside-the-Press Granulators

Small Plastic Crusher for Injection Scrap & In-House Regrind

Q: Can this small crusher process glass-filled or abrasive engineering plastics like PA66-GF30 or PBT?

Yes. When processing abrasive or glass-fiber reinforced engineering resins, we configure the machine with D2 (1.2379) / DC53 tool steel blades heat-treated to HRC 58–60 along with hardened cutting chamber wear plates. The staggered claw rotor exerts high shear torque to fracture brittle glass-filled sprues cleanly without premature blade chipping.

Q: How does the compact granulator prevent fines and dust from clogging proportional vacuum loaders?

Unlike high-speed crushers that pulverize resin into powder, our beside-the-press models run at a balanced moderate rotor speed (approx. 450–600 RPM) paired with precision-ground scissor clearances. This produces uniform, grain-like regrind with fines (particles under 1 mm) typically below 1.5%, preventing filter blinding in hopper vacuum loaders.

Q: How long does a complete cleanout take when changing resin colors or materials?

The machine is engineered specifically for fast color and resin changeovers. With tool-less quick-clamp releases, the soundproof hopper tilts open on gas struts, and the screen cradle drops down instantly. Operators have full 360° visual access to vacuum and wipe the chamber in under 10 minutes, eliminating cross-color contamination risks.

Q: Is the crusher suitable for automated robot infeed directly beside an injection molding press?

Yes. The feeding hopper is available with a robot infeed chute or conveyor flange. Positioned directly adjacent to the molding press, the granulator can be equipped with an optional blower cyclone or direct suction box that conveys regrind straight into the molding machine's proportional valve for immediate closed-loop blending.

High-efficiency beside-the-press granulator engineered for immediate reclamation of injection sprues, cold runners, blow-molded rejects, and small purgings with low noise, minimal fines, and rapid color-change access.

Direct beside-the-press reclaim eliminates regrind contamination and storage clutter.
Staggered claw rotor geometry cleanly cuts tough engineering resins (PA, PC, POM, ABS).
Tool-less drop-down screen cradle and hinged hopper enable 10-minute color changeover.

Request Latest Pricing View Technical Specs

Instant Beside-the-Press Granulation for Zero-Waste Molding

Immediate Sprues, Cold Runners & Rejects Reclaim

In precision injection and blow molding plants, accumulating cold runners and reject parts in floor bins causes regrind cross-contamination, ambient dust absorption, and wasted workshop space. Regrinding scrap days later often alters material moisture and degrades polymer properties.

Rumtoo’s Compact Plastic Crusher sits directly beside the molding press to granulate sprues and rejected parts immediately as they drop from the robot arm or operator station. Its high-torque, moderate-speed rotor cuts runners cleanly without thermal glazing, generating uniform regrind with under 1.5% fines that can be vacuum-fed instantly back into the molding machine’s proportional loader for 100% closed-loop material recovery.

Core Engineering Advantages

Designed for cleanroom and molding floor ergonomics, low decibel operation, and rapid resin changeovers.

Instant Closed-Loop Press Reclaim

Granulates runners, robot drops, and rejected moldings right beside the press for instant vacuum loading back into the feed hopper, eliminating regrind handling and resin storage clutter.
Soundproof Enclosure & Low Dust

Double-walled sound-insulated hopper and optimized shear cutting geometry lower operational noise to below 75 dB(A) while suppressing fines below 1.5% for clean factory air.
Staggered Claw D2 Tool Steel Knives

Staggered claw blades machined from vacuum-hardened D2 (SKD-11 / 1.2379) tool steel bite aggressively into tough technical resins (PA66, PC, POM, PBT, ABS) without rotor slippage.
10-Minute Tool-Less Color Changeover

Gas-spring assisted tilting hopper and quick-release screen cradle give complete 360° visual access to the cutting chamber, reducing cleanout time during mold and color switches to under 10 minutes.

Small Crusher Applications & Materials

Versatile size reduction engineered for production scrap recovery across injection, blow molding, and extrusion facilities.

Injection Cold Runners & Sprues

Direct drop reclamation of multi-cavity cold sprues, edge gates, and runner spiders from automated picker arms across automotive and packaging presses.
Blow-Molded Bottles & Pinch-Offs

Size-reducing defective HDPE, PP, and PET bottles, parison pinch-offs, and hollow containers directly on the blow molding line without pre-flattening.
Engineering Resin Parts & Purges

Reclaiming high-viscosity molded components, glass-filled nylon housings, polycarbonate scrap, and small startup purgings without rotor stalling.
Medical & 3D Prototyping Scrap

Cleanroom and prototyping workshop reclamation of filament spools, misprints, thermoformed blister trays, and laboratory sampling scrap.

Small Plastic Crusher Specifications

Model	Motor Power (kW)	Rotor Dia. × Width (mm)	Rotor / Bed Knives	Feed Opening (mm)	Output (kg/h)	Noise Level
RTM-SC-180	2.2 – 3.0	180 × 180	6 / 2	180 × 160	50 – 100	< 72 dB(A)
RTM-SC-200	4.0	200 × 240	9 / 2	240 × 200	100 – 180	< 74 dB(A)
RTM-SC-250	5.5	250 × 300	12 / 2	300 × 250	180 – 280	< 76 dB(A)
RTM-SC-300	7.5	300 × 400	15 / 2	400 × 300	250 – 400	< 78 dB(A)

Small Plastic Crusher in Action: Video

Frequently Asked Questions

Can this small crusher process glass-filled or abrasive engineering plastics like PA66-GF30 or PBT?

How does the compact granulator prevent fines and dust from clogging proportional vacuum loaders?

How long does a complete cleanout take when changing resin colors or materials?

Is the crusher suitable for automated robot infeed directly beside an injection molding press?

Warranty & Global Installation Support

12-Month Mechanical Warranty

All primary mechanical parts, heavy-duty casting frames, rotor shafts, and drive assemblies are backed by a comprehensive 12-month industrial warranty.
Beside-the-Press Integration & Spares

Complete engineering support for robot chute integration, sound enclosures, spare D2 blade sets, and optional proportional vacuum loader pick-up boxes.

Get a Small Plastic Crusher Quote

Share your injection molding press tonnage, scrap dimensions (runner geometry or bottle sizes), resin type (e.g. PP, ABS, PA66-GF), and desired in-house throughput. Rumtoo will recommend the ideal beside-the-press granulator configuration with sound enclosure and vacuum take-off accessories.

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