Filler Masterbatch
Na₂SO₄ Filler Masterbatch
- Purity: 99.5%
- Fineness: 1250~6000 mesh
- Light Transmittance: >85%
Transparent Na₂SO₄ Sodium Sulfate Filler Masterbatch is a functional additive tailored for PP, PE processing. Made from high purity ultra fine anhydrous Na₂SO₄ with a refractive index matching PE/PP, it retains product transparency while reducing raw material costs by 8–20%. With excellent dispersion, low equipment abrasion, and SGS certification (non-toxic, food-contact safe), it is widely used in plastic films such as shopping bags, produce bags, PP woven products like valve bags, rice bags, injection molding like household goods, toys, and blow molding like plastic bottles. We offer customizable Na₂SO₄ content (50–85%), carrier resin (PE/PP), and particle size to meet diverse industrial needs.
Features & Advantages of Sodium Sulfate Filler Masterbatch
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Premium Raw Material
Made from high-purity ultra-fine anhydrous Na₂SO₄ (purity ≥99.5%), ground to 1250–5000 mesh (particle size 2–10 μm) for uniform fineness. Equipped with compatible PE/PP carrier resin and professional surface modifiers (silane coupling agents, dispersants), ensuring excellent compatibility with polyolefin materials. Produced via advanced twin-screw extrusion granulation, with strict quality control (moisture ≤0.05%, no agglomeration) and SGS certification (non-toxic, food-contact safe). -
Superior Transparency & Clarity
Refractive closely matches PE and PP, avoiding light scattering and maintaining product transparency (light transmittance ≥85% for PE film with 20% addition), far better than traditional CaCO₃ filler masterbatch. No white spots or opacity after addition, ensuring the clarity of transparent/translucent plastic products. -
Cost-Saving & High Loading
Maximum addition ratio up to 40% (film) and 60% (structural parts), replacing a large amount of virgin resin and reducing raw material costs by 8–20%. Maintains mechanical properties (tensile strength ≥15 MPa, elongation at break ≥300% with 20% addition) without sacrificing product quality. -
Excellent Processability
High dispersion performance: No agglomeration under 40x microscope, no screen clogging during film blowing, spinning or injection molding. Low abrasion: Non-abrasive to processing equipment (screws, barrels, molds), extending equipment service life and reducing maintenance costs. Customizable specifications: Na₂SO₄ content (50–85%), carrier resin (PE/PP) and particle size can be adjusted according to customer needs. -
Performance Enhancement
Improves product rigidity, dimensional stability, wear resistance and printability (for woven products), while optimizing processing fluidity and reducing shrinkage/deformation.
Typical Applications & Scenarios for Transparent Na2SO4 Sodium Sulfate Filler Masterbatch
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Applications
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Products
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LDPE/LLDPE Blown Film (Shopping Bags, T-shirt Bags)
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Addition ratio: 10–30%. The film made has high transparency close to pure resin film, good toughness, and no white spots. It can reduce raw material costs by 8–15% while ensuring the film’s load-bearing capacity. It is the preferred filler for daily-use plastic bag manufacturers.
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HDPE Transparent Packaging Film (Produce Bags, Supermarket Bags)
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Addition ratio: 15–25%. The film has clear visibility, which can display the packaged products (such as fruits, vegetables) clearly, and has good puncture resistance, which is suitable for food packaging scenarios. Thesodium sulfate filler ensures that the film does not turn white or become opaque after stretching.
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Industrial Packaging Film (Transparent Wrapping Film, Protective Film)
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Addition ratio: 20–30%. It has good transparency and wear resistance, can protect the surface of the packaged products (such as electronic products, hardware) without affecting the observation of the product appearance, and reduces packaging costs.
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Transparent Garbage Bags, Roll Bags
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Addition ratio: 15–25%. Balances transparency and strength, making the garbage bag easy to observe the internal garbage while not easy to break, and the cost is significantly lower than that of pure resin garbage bags.
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PP Woven Bags (Valve Bags, Rice Bags, Fertilizer Bags)
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Addition ratio: 10–20%. The woven bag has good transparency (can see the internal products), smooth surface, and improved printability (the pattern is clearer and not easy to fade). At the same time, it enhances the stiffness and tensile strength of the woven bag, reducing the risk of bag breakage during transportation. It is especially suitable for high-grade packaging bags (such as rice bags, flour bags) that require transparency.
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PP Raffia Tape (Woven Fabric, Mesh Bags)
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Addition ratio: 12–22%. The raffia tape has uniform thickness, high transparency, and good tensile strength, which is suitable for weaving mesh bags (fruit mesh bags, vegetable mesh bags) and decorative woven fabrics. The Na₂SO₄ filler ensures that the raffia tape does not turn white during drawing and weaving.
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Household Plastic Products (Hangers, Plastic Containers, Food Boxes)
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Addition ratio: 8–20%. The products have good transparency (such as transparent hangers, semi-transparent food boxes), smooth surface, no burrs, and improved rigidity (hangers are not easy to bend). It can reduce the cost of raw materials without affecting the appearance and use effect.
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Plastic Toys (Transparent Toy Parts, Doll Accessories)
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Addition ratio: 10–18%. Non-toxic, high transparency, meets toy safety standards, and the toy parts have good impact resistance, not easy to break.
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Plastic Bottles (Drinking Water Bottles, Cosmetic Bottles)
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Addition ratio: 5–15%. The bottle has good transparency (close to pure resin bottles), smooth surface, and improved rigidity (not easy to deform when squeezed). It is suitable for medium and high-grade cosmetic bottles and daily-use plastic bottles.
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Hollow Containers (Food Jars, Small Storage Buckets)
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Addition ratio: 10–20%. The container has stable dimensions, good sealing performance, and transparency that allows observation of the internal storage items, reducing production costs.
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Polyester Fiber & Non-Woven Fabrics
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Addition ratio: 8–15%. Improves the whiteness and opacity of polyester fiber, while ensuring the fiber’s spinning performance (no spinneret clogging). Suitable for non-woven fabrics (hygiene products, medical non-wovens) that require certain transparency and whiteness.
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Get In Touch
Contact Us
We provide professional and responsive pre-sales service to understand your exact needs and offer the most suitable solutions.
Our reliable after-sales support ensures smooth usage and timely assistance whenever you need help.
info@chinamasterbatch.com
+86-130-8387-7627
NO.6 Plant, Zhongshan Technology Industrial Park, Jia County, Pingdingshan City, Henan Province, China.
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Get In Touch
Contact Us
We provide professional and responsive pre-sales service to understand your exact needs and offer the most suitable solutions.
Our reliable after-sales support ensures smooth usage and timely assistance whenever you need help.
info@chinamasterbatch.com
+86-130-8387-7627
NO.6 Plant, Zhongshan Technology Industrial Park, Jia County, Pingdingshan City, Henan Province, China.