Optical Brighteners for PE, PVC,and engineering polymers

In the plastics industry, an aesthetic and high-quality appearance is just as critical as mechanical strength. During polymer manufacturing or recycling processes, plastics naturally develop a yellowish tint over time when exposed to heat, light, and UV radiation.

Optical Brighteners (OB and OB-1) are specialized fluorescent additives used to mask this yellowish discoloration, maximizing whiteness and brightness.

These additives absorb invisible ultraviolet (UV) light and re-emit it in the visible blue light spectrum. This blue light neutralizes the polymer's natural yellowness, creating an optical illusion that causes the human eye to perceive the product as significantly brighter, more vibrant, and pure white.

Optical brighteners are the "hidden heroes" of the plastics sector. Working like magic even at incredibly low dosing rates, these specialized additives absorb invisible UV rays to ensure your products look much more brilliant, vivid, and pristine white.

Key Advantages:

Virgin-Like Brilliance for Recycled Plastics: They completely mask the dirty, gray, and yellowish appearance inherent to recycled plastics, giving your reclaimed raw materials the premium visual appeal of virgin resins.

Flawless Whiteness and Clarity: While helping you achieve that highly sought-after "snow-white" tone in opaque plastics, they eliminate haziness in transparent products, bringing them to crystal-clear clarity.

Cost Optimization: By enhancing overall brightness, they reduce your dependence on high loadings of white pigments (Titanium Dioxide), effectively lowering your formulation and production costs.

Rutil Titanium

Dioxide 

Rutil Titanium Dioxide (TiO2) is one of the most fundamental raw materials in the plastics industry, single-handedly meeting the sector's demand for white pigment. Although it exists in nature in two primary crystalline structuresAnatase and Rutile it is definitively the Rutile form that dominates the plastics market.

Due to its high refractive index (2.73), Rutile-type TiO2 refracts light extraordinarily well, imparting excellent opacity and superior whiteness to the plastic.

What Does Rutile Titanium Dioxide Do in Plastics?

Superior Opacity and Snow-Whiteness: It completely blocks light and images from passing through the plastic, ensuring full opacity. Even at very low loading rates, it imparts a flawless "snow-white" tone to the polymer matrix.

UV Protection and Weathering Resistance: Rutile TiO2 strongly absorbs and scatters harmful ultraviolet (UV) rays from the sun. This prevents the breaking of polymer chains, thereby stopping the plastic from yellowing, becoming brittle, or cracking under sunlight. It acts effectively as a sunscreen for plastics.

Color Stabilization and Brilliance: It enhances the vibrancy of other colored pigments used alongside it. Furthermore, it works synergistically with optical brighteners to maximize the product’s brightness and commercial appeal.

Thanks to its ease of processing, high-temperature stability (withstanding extrusion processes above 300°C), and exceptional hiding power, Rutile TiO2 is utilized across every segment of the plastics industry.

Mold Release Agent  Masterbatch

A Mold Release Agent Masterbatch is a functional additive encapsulated in a polymer carrier resin, designed to migrate to the surface of the plastic melt during processing. By forming a microscopic, low-friction lubrication layer between the hot polymer and the metal mold surfaces, it ensures effortless ejection of molded parts.

Unlike external release sprays that need to be manually applied to the mold every few cycles, an internal mold release masterbatch is mixed directly with the raw material, providing continuous, automated, and uniform release performance.

Effortless Part Ejection & Reduced Cycle Times: By significantly lowering the coefficient of friction (CoF), parts detach instantly when the mold opens. This eliminates stickiness, reduces cooling/holding time, and speeds up the entire production cycle.

Minimized Scrap and Rejection Rates: Internal stresses during ejection often cause critical defects such as warping, stress whitening, deformation, or visible ejector pin marks. Mold release masterbatches eliminate these mechanical strains, ensuring flawless part geometry.

Enhanced Surface Quality: It improves the melt flow on the mold surface, preventing surface defects like drag marks, scoring, or silver streaks, resulting in a smooth and visually appealing finish.

Continuous Production (No Manual Interruption): External sprays require stopping the machine to reapply the agent, which disrupts thermal stability and lowers output. An internal masterbatch ensures a continuous, fully automated workflow.

Cleaner Molds & Longer Equipment Life: It reduces resin build-up (plate-out) and residue accumulation inside the mold cavities. This means fewer maintenance shutdowns and an extended lifespan for expensive tooling.

Purge Compound

In modern plastics processing, operational downtime during color or resin changes can significantly drain profitability. Our high-performance Purging Compounds are engineered specifically for the rapid and thorough cleaning of screws, barrels, nozzles, and hot runner systems in injection molding, extrusion, and blow molding machinery.

Instead of wasting vast amounts of production resin to flush out old material, our purging masterbatch acts mechanically and chemically to scrub the internal components clean in a fraction of the time.

Key Benefits

Dramatically Reduced Downtime: Shortens color and material changeover times by up to 50%–80%, allowing your machinery to return to profitable production faster.

Carbon & Black Speck Removal: Effectively softens, lifts, and removes stubborn carbon deposits and degraded polymer scales that cause high reject rates.

Resin & Cost Savings: Requires significantly less material than using standard production resins for flushing, directly lowering scrap costs and raw material waste.

Hot Runner Protection: Specialized grades are completely safe for intricate hot runner systems, ensuring no clogging or damage to gates and pins.

Preventative Maintenance: Regular use during weekend shutdowns prevents oxidation and carbon build-up, ensuring a smooth, defect-free startup on Monday morning.

Recommended for most polymers: PE, PP, PS, ABS, PA, POM, PET, PC, etc.

High-Performance

EVA-Based Blowing Masterbatch

Our EVA-based blowing agent masterbatches are premium functional additives designed to create homogeneous microcellular and foamed structures in plastic injection molding, extrusion, and compression molding processes. Utilizing an EVA (Ethylene Vinyl Acetate) carrier resin, this masterbatch ensures outstanding compatibility with both polyolefins (PE, PP) and rubber blends.

Upon reaching processing temperatures, it releases controlled gases that expand the polymer matrix, delivering a lightweight, flexible, and cushioned structural core.

Key Benefits

Weight & Density Reduction: Reduces the overall weight of the final part by 10% to 35% without compromising structural integrity, leading to significant resin and cost savings.

Elimination of Sink Marks: Generates internal expansion pressure during cooling, which completely eliminates surface sink marks and shrinkage in thick-walled injection molded parts.

Superior Flexibility & Shock Absorption: The EVA carrier enhances the final product with excellent elasticity, soft-touch aesthetics, and high impact/shock-absorbing properties.

Thermal & Acoustic Insulation: The microcellular void structure provides enhanced acoustic damping and thermal barrier properties.

Uniform Cell Distribution: Ensures a controlled gas release, resulting in a highly uniform, fine, and consistent cell structure throughout the component.

Target Applications

Footwear Industry: Flip-flops, shoe midsoles, outsoles, and expanded EVA foam sheets.

Packaging & Sports Goods: Protective shock-absorbent foam packaging, yoga mats, and sports padding.

Automotive & Technical Parts: Lightweight interior trims, gaskets, seals, and extruded foam profiles.

PP Clarifying Masterbatch 

PP Clarifying Masterbatch: Crystalline Transparency and Maximum Efficiency

Polypropylene (PP) is inherently a semi-crystalline polymer. During standard cooling, the formation of large crystalline structures (spherulites) deflects light, giving the molded part an opaque or translucent appearance.

Our PP Clarifying Masterbatch (PP Clarifier MB) acts as a hyper-efficient nucleating agent. It drastically increases the number of nucleation sites, forcing the PP to form micro-crystals smaller than the wavelength of visible light. As a result, light passes through the material without refraction, giving the polypropylene a glass-like crystalline transparency and high gloss.

Key Advantages

Superior Optical Clarity: Drastically reduces haze and increases light transmission, providing a premium, crystal-clear aesthetic to PP finished products.

Reduced Cycle Times (Higher Productivity): Elevates the crystallization temperature, allowing the polymer to solidify much faster inside the mold. This shortens injection molding cycle times and boosts daily production output.

Enhanced Mechanical Properties: The dense and uniform microcrystalline structure increases the flexural modulus (stiffness) and tensile strength of the final product.

Organoleptic Safety: Ideal for food contact and medical applications, as it does not migrate or release unwanted odors or flavors into the final product.

Applications

Thanks to its combination of aesthetics and performance, clarified PP is widely used in the most demanding sectors:

Industry SectorTypical Applications

Food PackagingTransparent food containers, microwaveable trays, and housewares.

Medical & CosmeticsSyringes, transparent pharmaceutical bottles, and high-end cosmetic packaging.

Thin-Wall Injection MoldingHigh-transparency cups, caps, closures, and organizer boxes.