Rubber Mixing Mill - Two Roll Mill Manufacturer India
At a Glance - Rubber Mixing Mill Specifications
What is Rubber Mixing Mill?
A rubber mixing mill is an open-type, two-roll machine used in the rubber and plastic industries to process raw materials by plasticising, mixing, refining, and sheeting. It mixes rubber polymers with additives — oils, fillers, and vulcanising agents — by passing them between two horizontal rollers rotating at different speeds in opposite directions.
- Frame, two horizontal rolls (chilled cast iron), driving gear, lubrication system, roller nip adjustment device, and safety brakes
- Raw rubber is fed into the nip (gap) between the rollers, mixed, then manually or automatically cut and folded back for consistent mixture quality
- Rolls are heated or cooled (via water) to manage compound temperature — preventing premature vulcanisation
- Equipped with emergency brake systems including rod-operated and knee-operated stops for operator safety
Rubber Mixing Mill Models
All Modern Industries mixing mills are supplied in the AFB (Automatic Friction Brake) series. Eight standard models — from lab and small-batch production through to large tyre plant and export-grade heavy industrial units
| Model Name | Roll Size Dimension | Motor Parameters (HP / RPM) | Batch Capacity | Optimal Application Profile |
|---|---|---|---|---|
| M1 – AFB | 10" × 24" | 15 / 1000 | 8 – 10 kg | Laboratory Testing & Small Batch Qualification |
| M2 – AFB | 12" × 30" | 25 / 1000 | 18 – 20 kg | Small Batch / Specialty Material Runs |
| M3 – AFB | 14" × 36" | 40 / 1000 | 28 – 30 kg | Mid-Scale Industrial Lines |
| M4 – AFB | 16" × 42" | 60 / 1000 | 38 – 40 kg | Mid-Scale Continuous Production |
| M5 – AFB | 18" × 48" | 75 / 1000 | 45 – 50 kg | General Industrial Rubber Goods Factory |
| M6 – AFB | 22" × 60" | 120 / 1000 | 65 – 80 kg | High-Volume Manufacturing Facilities |
| M7 – AFB | 26" × 84" | 215 / 1000 | 90 – 105 kg | Heavy Industrial Output |
| M8 – AFB | 30" × 100" | 300 / 1000 | 125 – 200 kg | Large-Scale Automotive / Masterbatch Plant / Tyre Facilities |
Custom roll sizes available on request. Motor HP confirmed against compound viscosity and production duty cycle at time of order.
Hydraulic Stock Blender — Standard on All AFB Models
Modern Industries AFB mixing mills are equipped with a specially designed hydraulic stock blender — an integrated attachment that works alongside the rolls during the mixing cycle. This is a key differentiator from standard mixing mills available in the market.
- Reduces Labor Effort — Assists operators dynamically in mixing heavy rubber material with compound chemical powders.
- Safer Operation Standards — Keeps the operator’s hands safely isolated away from the critical roll nip entry zones during mixing operations.
- Optimized Temperature Levels — Lowers the overall batch temperature continuously to eliminate premature compound scorching.
- Independent Speed Adjustments — Stock blender feed rates can be completely manipulated independently regardless of the main roll RPM.
Key Features of Modern Industries Rubber Mixing Mills
🌡️ Cooling & Temp Control
- Universal rotary joints with internal spray pipes provide precision roll surface temperature management.
- High-efficiency water coupling system guarantees consistent temperatures across the full roll width.
- Water-cooled bearing housings prevent intensive heat soak from compound into critical bearings.
- Advanced labyrinth seals deliver enhanced protection against compound contamination and water ingress.
🛡️ Safety Features (Standard)
- Dual Emergency Stops: Push buttons with limit switches at both front and rear operator positions.
- Thrustor Brake: Electric/Hydraulic execution for immediate roll stopping upon activation.
- Hands-Free Protection: Dedicated Knee & Foot Brake systems for instantaneous emergency trips.
- Anti-Entrapment: Fitted with an overhead Cradle Bar, Safety Cable, and responsive Chest Guard.
- Intelligent Warnings: Integrated HMI safety alerts accompanied by an audible buzzer alarm.
- Heavy-duty safety grills and rugged gear guards fully enclose all rotating parts.
⚙️ Engineering & Performance
- Hydraulic Nip Adjustment: Safely set and adjust the nip gap under live loads completely tool-free.
- Adjustable Friction Ratio: Ranging from 1:1.25 to 1:1.4 to perfectly tune to compound type and viscosity.
- Fully automatic system control powered by seamless PLC & HMI integration.
- IE2 / IE3 energy-efficient motors rated at 1000 RPM minimize operational overheads across 3-shift productions.
- Heavy-duty cast iron frame engineered for a continuous 15–20 year industrial service life.
- Precision-ground hardened roll surfaces ensure uniform nip pressure across the entire roll face.
Applications — Industries That Use Rubber Mixing Mills
Tyre Components
Tread compound, sidewall compound, bead filler mixing
Rubber Flooring
Sheeting for industrial and commercial rubber floor tiles
Gaskets
Rubber compound preparation for moulded and cut gaskets
Hospital Sheets
Specialised rubber sheeting for medical and healthcare applications
Coated Textiles
Rubber-coated fabric for industrial and protective applications
Footwear Rubber
Sole compound for slippers, sandals, and safety footwear
Conveyor Belt Rubber
Compound preparation before calendering
Automotive Rubber Parts
Seals, hoses, anti-vibration mounts
How the Two Roll Mixing Mill Process Works
Mastication Phase
Raw rubber (bale-cut) fed between the rolls without additives. Rolls break down polymer chains, reducing viscosity and preparing the rubber to accept additives.
Chemical Addition
With rubber sheeting on the front roll — activators first, then fillers (carbon black, silica), then curatives (sulphur, accelerators) last. Order of addition is critical for dispersion quality and cure rate.
Blending Passes
The hydraulic stock blender assists the operator in folding and re-feeding the compound through the nip. 8–15 passes until homogeneous dispersion is confirmed.
Sheeting Off
Finished compound sheeted off at required thickness (set by nip), cut, labelled, cooled, and sent to moulding, extrusion, or calendering.
Why Choose Modern Industries for Your Rubber Mixing Mill?
Hydraulic Stock Blender
Standard on all AFB models to reduce operator labor, lower compound temperatures, and accelerate mixing rates. Competitors rarely offer this out-of-the-box.
50+ Years Engineering
The core AFB design has been field-tested and refined over five decades. Heavy-duty construction keeps machines built in 2005 running flawlessly today.
Standard Safety Spec
Operator protection is non-negotiable. Our comprehensive safety package ships fully integrated on every single machine assembly, never as a premium upgrade.
Automatic PLC & HMI
Delivers high-precision roller speed variations and responsive nip gap controls, guaranteeing strict, repeatable compound consistency across every batch.
PAN India & Global Support
Complete operational peace of mind with on-site engineering maintenance, remote diagnostics across 19+ export markets, and lifelong OEM spare parts availability.