How to Shred Large Extruder Head Waste Without Jamming: The Ultimate Guide (2025)

The Short Answer: Why Your Current Shredder Is Failing

The most common challenge in shredding Extruder Head Waste (also known as purge patties or lumps) isn’t a lack of horsepower—it’s the material’s extreme density causing motor overloads. To prevent jamming, the solution lies in “Smart Feeding Logic” (Auto-Reverse Systems) combined with a specialized High-Torque Rotor Geometry. While standard crushers rely on speed, successfully processing large plastic lumps requires a heavy-duty single-shaft shredder that intelligently adjusts the hydraulic ram pressure based on real-time amperage readings.

1. The Real Pain: When “Hard as Rock” Meets Machinery

If you are a plastic manufacturer or recycler, you know the nightmare of dealing with purge materials, die drool, and start-up lumps.

These aren’t just plastic scraps; they are dense, solid blocks that can weigh 50kg to 500kg. They act less like plastic and more like rocks. You’ve likely experienced one of these frustrating scenarios:

• The “Dancing” Effect: You throw a round lump into a Twin-Shaft Shredder. The blades can’t grab it. The material just bounces and rolls on top of the shafts for hours, effectively shredding nothing.
• The Instant Jam: You feed a block into a standard granulator. The impact is too sudden. The amperage spikes, the breaker trips, and now your maintenance team has to spend two hours unblocking the rotor manually.

Does this look familiar?

Caption: High-density extruder lumps are the ultimate stress test for recycling machinery.

At Rumtoo, we understand that downtime kills profitability. You don’t need a bigger machine; you need a smarter one.

2. The Solution: It’s Not Magic, It’s Engineering

Why can Rumtoo machines eat these blocks while others choke? It comes down to three specific engineering choices we’ve made for our Heavy Duty Single Shaft Shredders.

A. The Hydraulic Ram (Force Feed)

Gravity is not enough for large lumps. Standard hoppers allow materials to bounce away from the blades.
The Rumtoo Difference: We utilize a horizontal hydraulic ram. This acts as a giant hand, forcibly pushing the lump against the spinning rotor. It ensures the blades constantly engage with the material, preventing the “dancing” issue common in twin-shaft designs.

B. Intelligent “Current Limiting” Logic (Smart Feeding)

This is the brain of the operation.
How it works: When the shredder bites into a particularly hard section of the lump, the motor’s amperage naturally rises.
The Rumtoo Difference: Our PLC control system monitors this amperage in milliseconds. If it hits a safety threshold, the hydraulic ram automatically pauses and retracts slightly. This relieves pressure, allows the rotor to regain momentum, and then re-engages. This cycle happens automatically, preventing the machine from ever reaching the “jamming point.”

C. Rotor & Knife Design (V-Cut Technology)

Flat blades hit the plastic with a “chop,” creating massive shockwaves.
The Rumtoo Difference: We use concave, V-shaped knives. This design creates a “shearing” action (like scissors) rather than a chopping action. This significantly reduces the energy required to cut through dense lumps and extends the lifespan of your bearings by reducing shock.

3. See It in Action: The Rumtoo Performance

Words are cheap. Let’s look at the physics.

Video

4. Interactive Tool: Shredder Capacity Check

Not sure what specs you need? Use our quick estimator logic below:

Note: This is a general guide. For precise engineering calculations tailored to your material density, contact our engineering team.

5. Which Machine is Right for You?

Don’t buy an oversized machine for small lumps, and don’t under-spec for heavy duty work. Here are our top recommendations for handling Extruder Head Waste:

Option A: The Workhorse (Rumtoo R-Series Single Shaft)

Best for: Daily processing of large, heavy purge blocks and bales.

• Key Feature: Swing-arm hydraulic pusher for aggressive feeding.
• Blade Life: Rotatable blades (use 4 times before replacing).
• View R-Series Specifications >

Option B: The All-in-One (Rumtoo Integrated Shredder-Granulator)

Best for: Factories that need to go from “Lump” to “Pellet-ready Flake” in one step.

• Key Feature: A shredder on top, a granulator on the bottom. Saves space and energy.
• View Integrated Solutions >

Why Professionals Choose Rumtoo over Generic Crushers:

Ready to Solve Your “Lump” Problem?

We know that every plastic composition is different. Don’t guess.

🟢 Fast Check via E-mail:
Do you have a particularly difficult piece of waste?
Take a photo of your material and send it to us on E-mail. Our engineers will instantly analyze it and tell you:

1. If it can be shredded.
2. Which machine model handles it best.
3. An estimated hourly capacity.

👉 Click to Chat with an Engineer Now