Desiccant Masterbatch
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Riviera Polymers Private Limited was envisaged in 1982. The organization had to become a mark to reckon with in the manufacture of Colour and Additive Concentrates and Special Thermoplastic Compounds. Two decades on, we are living as Brand Riviera and remain the front-runner manufacturer of high-quality Masterbatches and Specialty Thermoplastic Compounds in India.
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Desiccant Masterbatch: Moisture Management for High-Quality Plastic Processing
Moisture is one of the biggest challenges in plastic processing, especially when working with recycled polymers, hygroscopic resins, or materials stored in humid environments. The presence of water or humidity in raw materials can lead to surface defects, poor mechanical properties, and processing inefficiencies.
This is where Desiccant Masterbatch becomes a game-changer.
Desiccant masterbatch is a powerful moisture-absorbing additive that allows manufacturers to process wet polymers without pre-drying, saving time, energy, and costs—while significantly improving the quality of the final product.
In this article, we explore what desiccant masterbatch is, how it works, its advantages, applications, and why it’s essential for modern plastic processors.
What is Desiccant Masterbatch?
Desiccant Masterbatch is a specialty additive masterbatch formulated with active drying agents, typically calcium oxide (CaO) or other moisture-absorbing compounds, dispersed in a polymer carrier like polyethylene (PE) or polypropylene (PP).
It is designed to absorb moisture present in the plastic material during the extrusion or molding process, preventing hydrolysis, bubbles, voids, and poor surface finish.
How Does It Work?
During plastic processing, especially with recycled polymers, moisture trapped in the granules turns into steam at high temperatures. This causes defects like holes, black spots, and weak weld lines.
When desiccant masterbatch is added (typically at 1–5%), it chemically binds with the moisture inside the resin and converts it into a harmless compound, effectively removing it from the melt.
No pre-drying is required, and it works in-line, directly in the extruder, injection molder, or blow molding machine.
Typical Formulations & Variants
Desiccant masterbatch is available in various types depending on the processing environment and polymer used:
Variant Type | Description |
Standard PE-based | For general use with LDPE, HDPE, LLDPE |
PP-based | Tailored for PP raffia, woven sack, injection molding |
PET-grade | Suitable for PET recycling and sheet extrusion |
High-Activity Grades | Higher CaO content (up to 80%) for extreme humidity conditions |
Anti-Foaming Variants | Reduces both moisture and trapped gas bubbles |
Packaging & Storage
- Packed in 25 kg moisture-resistant bags or vacuum-sealed foil pouches
- Should be stored in a cool, dry place
- Avoid exposure to air and humidity before use
- Use within 6–9 months of manufacture for best results
Conclusion
Desiccant Masterbatch is a vital tool in modern plastic processing, especially in an era where recycling, efficiency, and sustainability are non-negotiable. It eliminates the need for resin dryers, improves product quality, reduces energy usage, and supports the growing use of recycled materials.
Whether you’re a recycler, film extruder, or injection molder, desiccant masterbatch delivers cleaner output, higher productivity, and fewer defects—making it a must-have additive in your formulation toolkit.
Benefits
Eliminates Pre-Drying
Improves Product Quality
Enhances Processing Efficiency
Saves Operational Costs
Increases Recycled Content Usage
Wide Compatibility
No Additional Equipment Required
Customizable Formulations
Industrial Applications
Plastic Recycling Plants
Blown Film Extrusion
Injection Molding
Blow Molding
Sheet & Thermoforming
Pipes & Profiles
Woven Sacks & Raffia
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Unmatched quality, performance, and customization for every industry.
Frequently Asked Questions
Our FAQ section provides clear answers to common questions about white masterbatches, from product features to application details. We aim to help you understand how our solutions can improve your plastic products. If you have further inquiries, our team is always ready to assist you.
What is desiccant masterbatch used for?
It’s used to remove moisture from polymers during processing, especially in recycled plastics.
How does it work?
It chemically absorbs water and prevents steam-related defects in the final plastic product.
Which polymers are compatible?
PE, PP, PS, PET, ABS, nylon, and more.
What is the typical dosage?
1% to 5%, depending on moisture level and product type.
Do I still need a dryer with this?
No. It eliminates the need for pre-drying of resins.
Can I use it in transparent films?
Yes, low-loading, high-dispersion grades are available for clarity-sensitive applications.
Is it safe for food-contact products?
Food-grade variants can be formulated on request.
What is the active desiccant ingredient?
Typically calcium oxide (CaO) or similar moisture-reactive compounds.
Will it affect the mechanical properties of my product?
Not when used at recommended levels. It improves quality by removing moisture-related defects.
Can I use it with virgin and recycled blends?
Yes, it works with both virgin and recycled polymer mixes.
How should I store it?
In a sealed container, away from moisture and humidity.
What happens if it's exposed to air?
It may prematurely react with ambient moisture and lose effectiveness.
Can I use it in multi-layer film extrusion?
Yes, it can be used in inner or middle layers where clarity is not a concern.
Is it environmentally safe?
Yes, the compounds are non-toxic and safe when used as directed.
Does it leave residue in products?
No, it reacts with moisture and becomes part of the polymer matrix without visible residue.
Can I use it in colored products?
Yes, but it may slightly influence light-colored or clear shades—color-matched grades are available.
Does it work at all processing temperatures?
Yes, it’s effective across standard processing ranges for PE, PP, PET, and more.
Does it reduce foaming in extrusion?
Yes, it helps eliminate moisture-related foaming and surface imperfections.
What’s the shelf life?
6–9 months when stored properly in airtight packaging.
Where can I source desiccant masterbatch?
From masterbatch manufacturers or B2B platforms like MasterbatchManufacturers.com.
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That’s why we created a one-stop platform that connects buyers and suppliers in the niche category of Masterbatch worldwide.
Quick Links
Contact Info
Address
421/C, 4th Floor, Super Mall-1, Gh-0, above SBI Bank, Infocity, Gandhinagar, Gujarat 382007
