Desiccant Masterbatch
Absorbs residual moisture within the polymer melt for bubble-free output.
Desiccant Masterbatch is desiccant chemistry in pellet form. Plastic resins, fillers and recycled feed bring moisture into the line. When that moisture flashes to steam inside the barrel, it shows up in the finished part as pinholes, bubbles, fish-eyes or surface streaks. Desiccant Masterbatch puts calcium oxide based desiccant chemistry inside a polyethylene carrier pellet so it can be metered at the hopper alongside the host resin.
Because the active sits inside an off-white granule, it runs through standard pellet feeders without dust or a separate dosing system. The PE carrier softens within a standard processing window, melts with the host resin, and the calcium oxide binds residual moisture during processing, reducing or eliminating the need for a separate pre-drying stage on most polyolefin lines.
Three grades cover the performance range. Dry-Addi is the advanced grade for high-clarity, thin-gauge, lamination and multilayer films and premium recycled blends. Sanjivini delivers high absorption for general processing and recycled blends. Shine-Addi is the cost-optimised grade for routine production where standard moisture control is sufficient.
3 grades
Three grades, tuned to absorption capacity and end-use.
All three grades share the same calcium oxide chemistry on a polyethylene carrier. They differ in moisture absorption capacity and the applications they are best suited for. Tell us the host resin and line, and we will recommend the right grade.
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Sanjivini
High-performance desiccant masterbatch with high moisture absorption for polymer and recycled plastic processing. Reduces moisture-related defects such as bubbles, voids, fish-eyes and silver streaks, and in many applications can reduce or eliminate the need for pre-drying. Balanced combination of performance and cost-efficiency.
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Shine-Addi
Cost-effective, moisture-absorbing masterbatch with moderate absorption capacity, designed for general-purpose polymer processing. Reduces moisture-related defects in reprocessed and moderately moist raw materials, suited to routine production where standard performance and cost optimisation are critical. Not recommended for high-clarity, thin-gauge or lamination films.
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Dry-Addi
Advanced, next-generation desiccant masterbatch with highly reactive absorbers and controlled dispersion, capturing moisture faster at lower dosages without clogging screens, filters or dies. Engineered for the work conventional desiccants struggle with: high-clarity and thin-gauge films, lamination and multilayer structures, and premium recycled blends. Cleaner dispersion and lower screw and barrel abrasion mean a better surface finish and longer equipment life.
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Specifications
Per-grade specifications and Certificate of Analysis are provided on confirmed dispatch. Contact us to confirm the right grade for your application.
- Appearance
- Off-white granules
- Active chemistry
- Calcium oxide and additives
- Carrier resin
- Polyethylene (PE)
- Compatibility
- Suitable for PE and PP; other polymers subject to processing conditions
- Packing
- 1 kg pouches, further packed in 25 kg PP bags
- Shelf life
- 6 months under recommended storage conditions
Key benefits
Rapid moisture absorption
Reactive calcium oxide chemistry captures residual moisture during processing, in many cases reducing drying time and energy consumption.
Reduces moisture defects
Helps eliminate bubbles, pinholes, voids, fish-eyes, haze and moisture streaks in the finished part.
Excellent dispersion
Disperses cleanly with minimal specks and streaking, supporting stable melt pressure and consistent output.
Works across resin streams
Consistent performance in virgin, reprocessed and mixed resins on standard equipment, no special screw design or modifications needed.
Applications
Frequently asked questions
How is this different from Anti-Moisture Powder?
Same active chemistry, different format. The powder is a free-flowing powder dosed directly at the hopper. The masterbatch wraps the same calcium oxide chemistry inside polymer carrier pellets, so it can be metered through a standard pellet feeder alongside your colour and additive masterbatches.
When should I choose the masterbatch over the powder?
If your line is built around pellet feeders and you would rather not add powder handling or a separate dosing system, the masterbatch is the cleaner choice. It also makes housekeeping easier, since there is no powder upstream of the extruder.
Which plastics does it work with?
The carrier is a polyolefin, so it pairs naturally with polyethylene and polypropylene host resins. It can also be used in other thermoplastics where the carrier is compatible with the host. Share the host resin and we will confirm the right grade.
Do I still need a hopper dryer?
For most polyolefin extrusion and moulding lines, the masterbatch removes the need for a separate pre-drying step because the calcium oxide binds residual moisture during melt processing. For highly hygroscopic engineering polymers, share the host resin and we will tell you whether a drying stage is still worth keeping.
Does it keep the finished part looking clean?
At typical loadings the masterbatch disperses cleanly into the melt and is not visible in the finished part. For high-clarity end uses, share the application and a short trial on your line will confirm the right grade.
How should I store it?
Keep the bags sealed in a cool, dry indoor space until you are ready to use them. Once a bag is opened, reseal it between uses so the desiccant stays active. A Certificate of Analysis is supplied with every shipment with the specific storage and handling details for the grade.
