Purging / Flushing Compound for Extrusion & Moulding Applications

Purging / Flushing Compound

High-Performance Cleaning Solution for Polymer Processing Equipment

Optimized Cleaning Additive for

Extrusion & Moulding

Bajaj Purging Compound is an advanced, polymer-based cleaning formulation engineered to remove residual polymer, pigments, and carbonized deposits from plastic processing machinery. It is designed for extruders, injection moulding machines, blow moulding units, and compounding lines, ensuring faster colour changeovers, shorter downtime, and zero contamination between production runs.

Built on intelligent polymer chemistry and reactive cleaning agents, our Purging Compound combines mechanical scrubbing with chemical cleaning action to restore your system to a near-original clean state — without dismantling or mechanical intervention.

Why Purging Compound is Essential

In modern plastic processing, even minor contamination can lead to product defects, longer changeover times, and equipment degradation. Traditional cleaning using virgin resin or mechanical methods often fails to remove oxidized polymers or burnt carbon.Bajaj Purging Compound offers a controlled rheological balance and micro-reactive technology that effectively lifts and flushes stubborn residues, enhancing machine performance and product consistency.

How It Works

Thermo-Mechanical Cleaning

The compound develops a high-viscosity melt that scrapes and displaces deposits from the barrel, screw, and die surfaces.

Chemical Activation

Reactive agents create micro-turbulence and controlled gas release to detach and lift carbonized polymer and pigments.

Displacement & Passivation

The cleaned metal surfaces are coated with a thin stabilizing layer that prevents future residue build-up.

Stable Transition

Allows smooth shifting from one polymer or colour to another without degradation or black specks.

Key Technical Features

High-Viscosity Cleaning Matrix

Provides superior scrubbing and shear-driven cleaning inside barrel and die zones.

Reactive Cleaning Chemistry

Chemically loosens and lifts oxidized residues and pigments.

Temperature-Stable Formulation

Operates between 150°C to 320°C, suitable for a wide range of polymers.

Residue-Free Output

Leaves no ash, gels, or corrosive deposits.

Universal Compatibility

Available for PE, PP polymers

Fast Transition Time

Achieves up to 70% reduction in colour/material changeover duration.

Safe & Eco-Compliant

RoHS and REACH compliant, halogen-free, and low-odor composition.

Recommended Usage Guidelines

Stop current resin feed and purge remaining material.

Feed 1–1.5 times the screw/barrel capacity of Bajaj Purging Compound at normal processing temperature.

Run screw at medium speed and moderate back pressure to achieve optimal cleaning.

Continue until the discharged material is clean and neutral in colour.

Feed next resin or masterbatch immediately after purging while machine remains hot.

Tip: For highly contaminated systems, repeat the process once for complete cleaning.

Benefits to Processors

Reduced Downtime

Faster cleaning cycles mean more production uptime

Lower Material Waste

Minimizes scrap during colour/material transition

Extended Equipment Life

Non-abrasive action prevents screw/barrel wear

Improved Product Quality

Zero contamination or carbon specks in output

Energy Efficient

Requires no additional heating or mechanical scrubbing

Cost-Effective

Saves resin, labour, and changeover costs

Achieve Cleaner Machines, Faster Changeovers, and Higher Productivity

Purging Compound Applications

Extrusion Processing

Film, sheet, and pipe extrusion

Profile and filament lines

Compounding extruders for masterbatch or additive changeovers

Blown Film Masterbatch
Pipe Extrusion Masterbatch
Injection Moulding Masterbatch

Injection Moulding

Quick colour change between runs

Hot runner system cleaning

Material transition (e.g., PP → ABS → PET)

Injection Moulding Masterbatch

Blow Moulding

HDPE containers, bottles, and drums

IBCs and multilayer blow moulded products

Blow Moulding Masterbatch
Blow Moulding Masterbatch
Plastic recycling

Recycling & Compounding

Cleaning extruders before resin type change

Preventing cross-contamination between recycled and virgin polymers

Plastic recycling
Plastic recycling masterbatch

Storage & Handling

  • Store in a cool, dry place, away from sunlight and moisture.

  • Ensure clean hopper and screw before introducing compound.

  • Shelf life: 12 months in original sealed packaging.

  • Recommended storage temperature: below 40°C.

Safety & Environmental Compliance

  • Free from halogens, heavy metals, and corrosive agents.

  • RoHS, REACH compliant on request.

  • Generates minimal smoke and odor during operation.

  • Safe for operators and environmentally responsible disposal.

Why Choose Bajaj Purging Compound

With over three decades of polymer and additive expertise, Bajaj offers purging solutions tailored for your production line — ensuring high equipment uptime, minimal wastage, and consistent output quality.Each grade is custom-formulated for your specific resin system and processing temperature, backed by technical support from our extrusion and moulding specialists.

Experience how Bajaj Purging Compound can redefine your maintenance routine and reduce production losses. Contact our technical sales team to recommend the right grade for your extrusion or moulding line.

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