1. Product Description

Antiblock Silica is a high-efficiency special anti-blocking raw material in the plastic processing industry. Produced via advanced processes such as the sol-gel method, it strictly complies with industry standards, EU EN 14639 and relevant specifications for Food Contact Materials (FCM). With ultra-high purity silica of over 99.8% as the raw material, this product has a particle structure specially optimized for anti-blocking scenarios, featuring agglomeration-free and easy dispersion. It can form a uniform "micro-protrusion" structure in plastic products, effectively reducing the adhesion between various plastic products, and has good compatibility with various plastic resins without affecting the light transmittance, mechanical properties and processing performance of products. It is the preferred raw material for anti-blocking of plastic films, sheets, special-shaped parts and other products, suitable for the anti-blocking requirements of various plastic substrates including PE, PP, PVC and PET. Note: Silica is used to produce opening masterbatches for corresponding films, which are then applied in film production. Silica cannot be directly added to films during production.

2. Technical Parameters

3. Application Description

Focusing on the core anti-blocking needs of plastic products, Antiblock Silica provides an efficient and stable anti-blocking solution for plastic films, sheets and other products by precisely regulating physical and chemical properties. The core application values are as follows:

1. High-efficiency preparation of anti-blocking masterbatches: Excellent particle dispersibility enables uniform mixing with various carrier resins such as LLDPE and PP, with a filling amount of 10%-30%; no precipitation or agglomeration during masterbatch forming, no equipment wear during subsequent processing such as film blowing, casting and extrusion, meeting the requirements of industrial large-scale production.

2. Effectively reducing product adhesion: Adding only 0.2%-0.8% to plastic products can form uniform "micro-protrusions" on the product surface, reducing the contact area between products by more than 60% and the adhesion from 500mN/25mm to below 50mN/25mm, effectively solving the adhesion problem in winding, stacking and storage of plastic products. 

3. Stably ensuring product properties: Relying on advanced adhesion from 500mN/25mm to below 50mN/25mm, effectively solving the adhesion problem in winding, stacking and storage of plastic products.surface modification technology, it has good compatibility with the plastic resin matrix, and the addition does not affect the core properties of products - the light transmittance of films remains above 90%, the tensile strength reduction is ≤3%, the heat seal strength retention rate is ≥95%, and the performance is stable at a processing temperature of ≤200℃.

4. Adapting to anti-blocking requirements of multiple scenarios: It can be widely used in various plastic products of substrates such as PE, PP, PVC and PET, solving the adhesion pain points in different scenarios such as high-temperature storage adhesion of PP cast films, tight winding of PVC heat shrinkable films and stacking adhesion of PET sheets, replacing traditional anti-blocking agents such as talcum powder and improving product quality.

5. Synergistically improving processing and user experience: It has excellent synergy with common additives such as slip agents, which can further reduce the friction coefficient of plastic products, not only improving the efficiency of processing processes such as slitting, printing and bag making, but also improving the opening and user experience of terminal products and increasing product added value.

4. Factory Advantages

• Custom modification capability: Surface modification solutions (such as amino silane modification for enhanced compatibility and phenyl silane modification for improved temperature resistance) can be customized according to the type of carrier resin for anti-blocking masterbatches (e.g., PE, PP, PET) and the requirements of target products (food packaging, industrial packaging, plastic sheets), adapting to different processing technologies (film blowing, casting, extrusion).
• Performance stability guarantee: Adopting a fully automatic closed-loop production line, the coefficient of variation of particle size distribution is controlled at ≤10%, and the specific surface area difference between batches is ≤3%, ensuring the formula stability in the production of anti-blocking masterbatches and avoiding plastic product quality problems such as adhesion and appearance defects caused by the performance fluctuation of anti-blocking agents.

5. Frequently Asked Questions

Q: Can this antiblock silica be used to produce anti-blocking masterbatches for food-contact plastic products?

A: Yes. Our products comply with food contact grade standards such as FDA 21 CFR §177.1520 and EU No 10/2011, and third-party test reports can be provided. There is no compliance risk in the application of PE and PET anti-blocking masterbatches for food packaging.

Q: How to select the appropriate parameters of Antiblock Silica according to the processing technology of plastic products?

A: Our technical team will provide 2-3 sets of exclusive parameter schemes according to your target product substrate, processing technology (film blowing/casting/extrusion), product specifications and anti-blocking requirements, and determine the optimal parameter combination through the whole-process verification of masterbatch preparation - product forming - anti-blocking performance test.

Q: Will adverse reactions occur when this Antiblock Silica is mixed with other plastic additives?

A: No. Our products have passed comprehensive compatibility tests and have excellent compatibility with common plastic additives such as antioxidants, light stabilizers and slip agents (e.g., erucamide, oleamide). No chemical reaction, delamination or agglomeration occurs after mixing, and they can be directly used for masterbatch production.

Q: What is the cycle for adjusting the product particle size or modification type after small-batch trial?

A: No long waiting time is required. We have a modular surface modification production line and flexible particle size control technology, which can quickly switch production parameters, shortening the customization cycle to 7-10 days. At the same time, we provide performance comparison test data before and after modification/parameter adjustment to help customers quickly verify the effect.

6. Certifications and Honors

• FSSC22000
• ISO22000:2018
• ISO9001:2015
• SHC HALAL
• OU KOSHER
• FDA Certification
• FAMI-QS
• SEDEX
• Food Additive Production License
• Feed Additive Production License
• National High-Tech Enterprise
• Guangzhou Specialized, Sophisticated, Unique and Novel Enterprise
• 17 Patents Granted by the National Intellectual Property Administration