1. Product Description

Silica Anti-blocking Agents are the core functional raw materials for manufacturing various anti-blocking masterbatches in the plastic processing industry. Prepared via advanced processes such as the sol-gel method, they strictly comply 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 core component, these agents form a uniform and dense "micro-protrusion" structure in anti-blocking masterbatches, which can effectively reduce the adhesion between plastic films, sheets, pipes and other plastic products without affecting the core mechanical properties such as light transmittance and tensile strength of the products. They are suitable for the production of anti-blocking masterbatches for various plastic substrates including PE, PP, PVC, PET, BOPP and CPP, serving as a universal and high-efficiency plastic anti-blocking solution. 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 for use.

2. Technical Parameters

3. Application Description

By precisely regulating physical and chemical properties, Silica Anti-blocking Agents deeply meet the core requirements of anti-blocking masterbatch production, providing efficient anti-blocking support for plastic films, sheets, pipes and other products. The core application values are as follows:

1. Empowering high-efficiency preparation of anti-blocking masterbatches: The uniform particle size enables uniform mixing with carrier resins such as LLDPE and PP, with a filling amount of 10%-30%; no precipitation during masterbatch forming, no equipment wear in subsequent film blowing/casting/extrusion processing. The melt flow index of the masterbatch remains stable at 2.5-3.0 g/10min after adding 20% of this anti-blocking agent, meeting the requirements of high-speed processing.

2. Significantly reducing the adhesion of plastic products: When the prepared anti-blocking masterbatch is added to plastic products at 0.2%-0.8%, silica particles 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, solving the adhesion problem in winding, stacking and storage of plastic products.

3. Ensuring the stability of key product properties: Relying on excellent surface modification technology, it has good compatibility with the resin matrix and does not affect the core properties of products - the light transmittance of PE film remains above 90%, the tensile strength reduction is ≤3%, and the heat seal strength retention rate is ≥95%; the performance is stable at a processing temperature of ≤200℃, meeting various high-end processing requirements.

4. Adapting to anti-blocking scenarios of multiple substrates: It can cover the production of anti-blocking masterbatches for substrates such as PE (low density, linear low density), PP (homopolymer, copolymer), PVC (flexible) and PET. For example, in the anti-blocking masterbatch for PP cast sheets, it can solve the adhesion problem of sheets during high-temperature storage; in the anti-blocking masterbatch for PVC pipes, it can improve the demoulding and stacking efficiency of pipes.

5. Improving the efficiency of the entire processing process: Effectively solving the jamming problem in slitting, printing, bag making, assembly and other processes caused by product adhesion, helping to improve the overall efficiency of each processing process by 30% and reduce production loss.

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 pipes), 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 to ≤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 caused by the performance fluctuation of anti-blocking agents.

5. Frequently Asked Questions

Q: Can this anti-blocking agent be used for the production of food contact grade anti-blocking masterbatches?

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 (e.g., specific surface area, particle size) of the anti-blocking agent according to the type of plastic products?

A: Our technical team will provide 2-3 sets of parameter schemes according to your target product substrate (e.g., LLDPE film blowing), product specifications (e.g., 20μm thin film), processing technology and anti-blocking requirements, and determine the optimal parameters through the whole-process verification of masterbatch preparation - product forming - anti-blocking performance test.

Q: Is there any compatibility problem between this anti-blocking agent and other additives (e.g., antioxidants, slip agents) in the masterbatch?

A: No. Our products have passed compatibility tests and have excellent compatibility with common antioxidants and slip agents (e.g., erucamide, oleamide). No chemical reaction or delamination occurs after mixing, and they can produce a synergistic effect with slip agents to further reduce the friction coefficient of plastic products from 0.3 to below 0.15.

Q: Is a long wait required if the modification type needs to be adjusted after small-batch trial?

A: No long wait is needed. We have a modular surface modification production line, which can quickly switch the type of modifier based on the original production process, shortening the customization cycle to 7-10 days. At the same time, we provide performance comparison test data before and after modification to help customers quickly verify the effect and reduce the R&D cycle cost.

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 from the National Intellectual Property Administration