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ZLSIL-K70 Plastic Grade Silica Anti-blocking Agent Product Specification
Classification :
High-End Industrial Silicon Dioxide
Keywords :
ZLSIL-K70 Plastic Grade Silica Anti-blocking Agent Product Specification
PRODUCT DETAILS
1. Product Description
ZLSIL-K70 is synthetic amorphous plastic-grade silica for anti-blocking application, supplied as fine white powder manufactured via proprietary customized production processes. CAS No.: 112926-00-8 (former CAS No.:7631-86-9), EINECS No.:231-545-4. Featuring high whiteness and porous structure with ultra-low impurities of sodium, iron and other heavy metals, the product boasts outstanding compatibility with PP, PE, PET, PVC and other plastic resins. It requires no pre-grinding, features low addition dosage and superior dispersion, without impairing the transparency or mechanical strength of plastic films. Non-toxic, pollution-free with zero volatile substances and migration precipitates, it stably safeguards the appearance and quality of finished packaging goods. By reducing exposed polymer molecular chains during processing and preventing molecular entanglement between contacted film layers, the silica delivers remarkable anti-blocking and slip improvement via lowered film friction and adhesion. It also strengthens anti-creep property for high-speed packaging lines and reinforces finished film mechanical performance. Ideally formulated for anti-blocking masterbatch production for diverse plastic films, especially recommended for applications with strict requirements on finished whiteness and surface appearance.
2.Technical Data Sheet
Item | Specification | Unit |
Appearance | Fine white powder | — |
Internal controlled D50 particle size | 6.5~7.5 | μm |
Pore Volume | 0.1~0.3 | cm³/g |
DBP Oil Absorption | 65~95 | ml/100g |
Pore Diameter | 7~9 | nm |
Iron Content | ≤60 | ppm |
Whiteness | ≥95 | — |
Sodium Content | ≤0.05 | ppm |
Moisture Content | ≤5 | % |
3. Core Application Advantages
1.Premium whiteness for high-standard appearance:
Whiteness ≥95 ensures no discoloration on final films, perfect for food packaging and daily consumer goods packaging with strict surface requirements.
2.Simplified processing & cost saving:
Direct blending with carrier resin without grinding; excellent dispersion eliminates agglomeration to shorten masterbatch procedures, cut production costs and boost throughput.
3.Preserve original film performance:
Excellent resin compatibility maintains original transparency and mechanical properties of finished plastic films.
4.Superior anti-blocking performance:
Optimized particle size forms uniform tiny protrusions on film surface to reduce contact area, effectively eliminating blocking after film winding or high-temperature storage.
5.Multi-substrate compatibility & high-temperature stability:
Applicable to anti-block masterbatch of PP, PE, PET, PVC films. Low moisture design retains intact product performance after drying below 300°C, fully satisfying PET film processing criteria.
4. Storage & Handling Instructions
1.High specific surface area enables easy absorption of ambient moisture and volatile contaminants. Store hermetically in cool, dry and well-ventilated warehouses; shelf life of unopened packaging is 24 months. Performance verification test is mandatory before application if beyond expiry date.
2.Adopt dust-proof protection during loading, transportation and usage. Stack height shall not exceed 10 layers to avoid particle structure deformation caused by compression, which would damage dispersion and anti-blocking efficiency.
3.Extended mixing duration is suggested during extrusion to offset dispersion loss from mechanical compression. Use promptly once package is opened to avoid moisture-induced deterioration of dispersion and anti-blocking property.
Packaging and Shipping
Zhongqi (Guangdong) Silicon Materials Co., Ltd., with over 20 years of experience in the food-grade silica field, is a national high-tech enterprise and a Guangdong Province specialized and innovative enterprise. Trusted by numerous international food giants, it is a leader in high-end food-grade silica. Shandong Zhonglian Chemical Co., Ltd. is Zhongqi's sole officially authorized overseas sales subsidiary.
laboratory
The company has established a world-leading R&D and intelligent manufacturing system, built GMP-standardized workshops, constructed 10,000-ton intelligent production lines, established a national-level testing center equipped with cutting-edge international equipment, and built its own high-standard microbiological testing laboratory. From raw material screening to finished product delivery, the entire process strictly adheres to domestic and international food safety management certifications, achieving simultaneous leadership in both "quality" and "quantity."
Customer Visit
We are committed to silicon dioxide for 20 years, our product is well know in the world and cooperate with some Fortune 500 companies, such as the Nestlé，Yihai Kerry，COFCO，China Resources，Budweiser，Symrise, and so on.
HONOR
In 2021, the company was listed on the Guangdong Stock Exchange, marking the beginning of its international expansion. Today, Zhongqi Silicon Industry, with an open vision, empowers the global food industry's safety system with the power of "Made in China." Going forward, the company will continue to focus on molecular-level safety to ensure peace of mind and, with a global perspective, to create a purer quality of life. Because true strength lies in making invisible protections visible to the world.
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Jinan City, Shandong Province,China
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Guangzhou City, Guangdong Province
