Industry News

Rubber processing and recycling lines often produce scrap that isn’t easy to granulate—especially rubber sprues, runners, and edge trim. These materials are tough, elastic, and can behave unpredictably during cutting. If the knife design or cutting angle isn’t right, you may see:

• Unstable throughput (output goes up and down)

• Uneven particle size

• Poor granule shape

• Too many fines or powder

• More dust and noise around the machine

The V-Series Heavy-Duty Granulator is designed specifically for these “hard-to-cut” rubber materials. It focuses on optimized knife geometry, cutting angle, and a sound-insulated feed section to improve cutting stability and shop-floor conditions.

What Materials Can the V-Series Granulate?

The V-Series is commonly used for:

• Rubber sprues

• Rubber runners

• Edge trim and offcuts

• Tough rubber scrap from molding or extrusion lines

Because rubber characteristics vary widely (elasticity, thickness, hardness, additives), the V-Series offers different knife options so one machine can handle multiple scrap types.

Knife Options: Choose the Right Blade Style for Your Rubber

The V-Series typically supports two knife styles. Selecting the right one helps improve granule quality and reduces powder.

Claw-Type Knives (Best for Elastic, Tough Rubber)

Claw knives are ideal when the scrap is highly elastic and tends to slip during cutting. Their “grip” effect helps pull material into the cutting zone and maintain continuous granulation.

Common use cases:

• Rubber sprues and runners

• Tough scrap that rebounds or stretches during cutting

Flat-Type Knives (Best for Sheet Trim and Uniform Granules)

Flat knives are usually better for sheet-like trim or scrap where a cleaner, more consistent granule shape is the priority.

Common use cases:

• Edge trim

• Sheet or strip scrap

• Applications that require more uniform particles

Why this matters: With selectable knife styles, one granulator can support mixed-material production, reducing the need to buy separate machines for different scrap streams.

Cutting Structure: Front Knife Design + Optimized Cutting Angle

Rubber sprues usually respond better to shearing than squeezing or impact. The V-Series uses a front knife cutting structure with an increased cutting angle to improve efficiency and stability.

In real production, this often leads to:

• More reliable bite-in: less slipping and fewer “idle” rotations

• Smoother operation: more continuous cutting and steadier throughput

• Better particle consistency: fewer fines and more usable granules

If you regularly struggle with inconsistent granules or excessive powder, cutting geometry is often the main reason—this is where the V-Series is built to perform.

Noise and Dust Control: Four-Side Sound-Insulated Hopper

Granulation stations are known for noise, and rubber cutting can be especially loud. The V-Series uses a four-side sound-insulated feed hopper designed to reduce noise leakage during operation.

A typical construction includes:

• An inner stainless-steel layer for corrosion resistance

• An outer reinforced structure for durability in the feed zone

The goal is straightforward: lower noise at the machine and improve the working environment around the granulator.

Knife Durability: High-Chromium Tool Steel + Adjustable Knife Projection

Knives are the main wear parts in any granulator, especially when processing rubber that may include harder contaminants.

The V-Series uses high-chromium alloy tool steel, designed to balance:

• Wear resistance

• Toughness

• Service life under demanding cutting conditions

Adjustable Knife Projection (Knife Extension Length)

The V-Series also supports adjustable knife projection, which helps tune cutting performance for different rubber types:

For thicker or harder scrap, adjustment can improve engagement and cutting stability

For softer or thinner trim, adjustment can reduce over-cutting, lower fines, and improve granule consistency

This flexibility helps maintain stable results across changing batches and formulations.

Safety Features: Designed with CE-Style Safety Principles in Mind

The highest-risk moments with granulators typically include:

• Feeding

• Cleaning

• Maintenance

• Start/stop procedures

The V-Series emphasizes CE-style safety principles, using multiple protective measures to reduce operational risk and support safer day-to-day production.

Maintenance and Cleaning: Compact Design with Less Material Trapping

In daily use, operators often judge a granulator by two things:

1. Does it trap material inside?

2. How fast can it be cleaned and serviced?

The V-Series is designed with a compact layout and a structure intended to reduce material build-up. That means:

• Easier cleaning

• Less downtime

Lower routine maintenance effort

This can be valuable in both small workshops and high-output production lines where quick turnaround matters.

Who Should Choose the V-Series Heavy-Duty Granulator?

The V-Series is a strong fit if your main scrap materials include rubber sprues, runners, and edge trim, and you often face:

• Difficult cutting due to elasticity

• Inconsistent particle size

• Too much powder/fines

• High noise levels near the granulation station

Key benefits at a glance

• Knife options for broader material compatibility

• Optimized cutting geometry for stable throughput and better granule shape

• Sound-insulated feed design for improved shop-floor conditions

• Durable knife material with adjustable settings for consistent results

• Safety and maintenance features designed for long-term production