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Bajaj Plast OB — Optical Brightener Masterbatch
Bajaj Plast OB

Brighter.
Whiter.
Unmistakable.

High-performance Optical Brightener Masterbatch, engineered to mask the inherent yellowness of plastics and bring every surface to life.

Bajaj Quality = Profit
Bajaj Plast OB Optical Brightener Masterbatch
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A single additive that transforms dull, yellow plastics into surfaces that feel cleaner, whiter and more premium — instantly.

Why it's needed

The yellow problem in plastic.

Without OB
Dull. Yellowish. Aged.

Virgin polymers, recycled PCR and reprocessed material naturally carry a yellow-brown tint — hurting perceived quality, shelf appeal and brand value.

ABC
With Bajaj Plast OB
Clean. Bright. Alive.

Optical Brightener absorbs invisible UV light and re-emits it as visible blue — neutralising yellow and making plastics look whiter-than-white.

ABC
How it works

Physics, not pigment.

Optical brightening agents absorb light in the ultraviolet and violet range (300–400 nm) and re-emit it as fluorescent blue light in the 420–500 nm band. This blue output cancels out the yellow undertone of the substrate — giving a pleasing, whiter-than-white appearance without bleaching or pigments.

Optical brightener spectrum diagram
The formula

Engineered for PE, PP and PCR.

Plast OB permits recycled PCR plastics to present a more consumer-pleasing colour balance. It counters the yellowish-brown “dirty” effect typical in post-consumer recycled polymers, letting brands load more recycled content without compromising clarity — improving environmental ranking and shelf impact at once.

Plast OB masterbatch granules
The making

From raw compound to finished masterbatch.

Four precision steps. One brighter outcome.

01
Raw material selection

High-grade optical brightening agents are sourced and blended with carefully chosen carrier resins — PE, PP or polymer-specific bases — to ensure compatibility with your end process.

02
High-precision dispersion

Twin-screw compounders disperse the OB uniformly into the carrier at controlled shear and temperature — preventing hotspots, protecting the active and ensuring consistent fluorescence.

03
Pelletising & cooling

The molten strand is quenched, cut into uniform pellets and dried — producing a clean, free-flowing masterbatch that feeds smoothly into any hopper.

04
Quality check & packaging

Every batch is tested for whiteness index, dispersion, MFI and heat stability in Bajaj's ISO 9001:2015 certified lab — then packed for global despatch.

Key features

Built to perform.
Designed to impress.

Masks inherent yellowness

Neutralises the natural yellow undertone of virgin and reprocessed polymers for clean, bright results.

Enhances gloss & shine

Adds a premium, fresh finish to plastic products — elevating perceived quality on any shelf.

Excellent heat resistance

Stable at high processing temperatures with low volatility.

Good light fastness

Retains brightness and colour fidelity under prolonged light exposure.

Flexible blending

Works alone or alongside heat, light and process stabilisers — fully customisable to your recipe.

Why it matters

Numbers that speak for themselves.

0
UV absorption starts at 300 nm
0
Visible re-emission up to 500 nm
0
Years of masterbatch expertise
0
% ISO 9001:2015 quality committed
Why Bajaj

Three decades of trust, engineered into every pellet.

Bajaj Polyblends has been producing masterbatches since our beginnings in Nagpur, Maharashtra — delivering stringent, consistent quality to customers across India and the world.

01
ISO 9001:2015 certified

Certified by TÜV Nord — every batch is manufactured under a globally recognised quality management system.

02
Dedicated R&D

In-house R&D formulates brighteners tuned to your polymer, process temperature and loading percentage.

03
Pan-India & export reach

Manufacturing backed by Gwalior, Chennai and export desks — delivering reliably wherever you produce.

04
Quality  =  Profit

Consistency you can count on, reducing rejections and lifting the premium feel of every product you ship.

05
Full masterbatch ecosystem

From colour and TiO₂ white to additive and filler masterbatches — one partner for every compound need.

Processes

Fits every conversion line you run.

Plast OB is designed to integrate with every major plastic processing method — with formulations tuned to each.

Injection Moulding
Injection Moulding

High efficiency with dimensional uniformity — even on complex parts.

Blow Moulding
Blow Moulding

A cost-effective way to produce bright, intricate hollow shapes.

Roto Moulding
Roto Moulding

Uniform fluorescence across large rotationally moulded parts.

Woven Sack
Woven Sack / Raffia

Cost optimisation and property enhancement for tapes and sacks.

Blown Film
Blown Film

Suited to mono & multilayer flexible packaging films.

Cast Film
Cast Films

Bright, consistent output for cast extrusion lines.

Thermoforming
Thermoforming

Uniform brightness with scalable, customisable output.

FIBC Bags
FIBC / Jumbo Bags

Enhanced whiteness on high-performance bulk bag fabric.

Blow Moulded Tanks
Blow Moulded Tanks

HDPE tanks with limitless design and a striking bright finish.

Applications

Everywhere plastic meets the eye.

From luggage to tanks to textile yarn — Plast OB lifts the finish of end-products across every sector.

Luggage Bags
Luggage Bags
Jerry Cans
Jerry Cans
Tanks
Tanks
Road barriers
Road Barriers
Waste Bins
Waste Bins
Barrels and drums
Barrels & Drums
Toys
Toys
Tarpaulin
Tarpaulin / Raffia
Woven Bags
Woven Bags
Yarn
Textile Grade Yarn
BOPP Film
BOPP Film
PCR Packaging
PCR Packaging
Why it's important

The difference between "just plastic" and a product customers choose.

In crowded aisles, perceived quality wins. A dull, yellowish product signals "old" and "cheap" — even when the resin is identical. A bright, clean product signals "new" and "premium".

Plast OB unlocks more than aesthetics. It lets brands confidently load higher percentages of recycled PCR content — meeting sustainability targets while maintaining the clarity and appeal consumers expect.

Bright plastics aren't a finishing touch. They're a commercial advantage.

Optical brightener effect
Bajaj Plast OB

See your plastic
in a whole new light.

Whiter whites. Cleaner tones. Higher shelf impact. Every pellet, engineered by Bajaj.

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