Product Description

Precipitated Silica Opening Agent is a cost-effective core anti-blocking raw material suitable for large-scale production in the plastic processing industry. Prepared via a precisely controlled liquid-phase precipitation reaction process, it strictly complies with industry standards, EU EN 14639 and relevant Food Contact Material (FCM) regulations. With ultra-high purity silica (≥99.8%) as the core component, its particle size, pore structure and surface characteristics are precisely regulated through the precipitation process. Non-agglomerated and with excellent dispersibility, it forms a uniform and stable micro-protrusion isolation structure in anti-blocking masterbatches, effectively reducing the blocking force between plastic films and solving problems such as difficult film unwinding and tight winding. Meanwhile, it has no impact on film transparency, mechanical properties and processing performance, and is compatible with the large-scale production of anti-blocking masterbatches for various plastic substrates such as PE, PP, PVC, PET, BOPP and CPP. It is a universal anti-blocking solution that balances high performance, high stability and high cost-effectiveness. (Note: Silica is used to produce anti-blocking masterbatches for corresponding films, which are then applied in film production. Silica cannot be directly added to films.)

Technical Parameters

Application

Relying on the high controllability and large-scale advantages of the precipitation process, Precipitated Silica Opening Agent is deeply matched with the industrial production requirements of plastic anti-blocking masterbatches, providing an efficient, stable and cost-effective anti-blocking solution for various plastic films and sheets. Its core application values are as follows:

1. Perfectly adapted for large-scale anti-blocking masterbatch production: The precipitation process enables batch precise control of particle size and pore structure, with excellent particle dispersibility. It can be evenly mixed with various carrier resins such as LLDPE, PP and PET, with a fill content flexibly adjustable from 10% to 30%. The masterbatches feature no precipitation, no crystal spots and no agglomeration during formation, and cause no equipment wear in subsequent film blowing, casting and extrusion processes, with highly stable performance between batches, adapting to the large-scale continuous production requirements of 10,000-ton level anti-blocking masterbatches.

2. Efficiently and stably solving film blocking pain points: Only 0.2%-0.8% of the prepared anti-blocking masterbatch needs to be added to plastic products. It forms a uniform micro-protrusion isolation layer on the product surface, reducing the contact area between films by more than 60% and the blocking force from 500mN/25 mm to below 50mN/25 mm. It completely resolves problems such as tight film winding, blocking during high-temperature storage and anti-blocking failure after long-term storage, with long-lasting and stable anti-blocking effects.

3. Fully protecting the core performance of products: Relying on custom surface modification technology, it has good compatibility with various plastic resin matrices and causes no negative impact on the core performance of products after addition—PE film maintains a light transmittance of over 90%, a tensile strength decrease of ≤3%, and a heat seal strength retention rate of ≥95%. It features stable performance at a processing temperature of ≤220℃, meeting the processing and quality requirements of various mid-to-high-end products.

4. Wide adaptation to all scenarios and substrates: Fully covering various plastic substrates including PE (LDPE, LLDPE, mPE), PP (homopolymer, copolymer), flexible PVC, PET, BOPP and CPP. It provides adapted anti-blocking effects for general packaging films, laminated films, as well as industrial sheets and heat shrinkable films, and can replace imported similar products to achieve high-cost-effective import substitution.

5. Excellent balance between cost and performance: The precipitation process has the advantage of large-scale production costs. While ensuring the same anti-blocking and optical performance as sol-gel products, it can significantly reduce customers' raw material procurement costs. Meanwhile, it has excellent compatibility with various additives, which can reduce the addition amount of other additives such as slip agents, further lowering customers' comprehensive production costs.

Factory Advantages

• Customization capability exclusive to precipitation process: Key indicators such as product particle size, specific surface area and pore structure can be precisely customized by regulating core parameters of the precipitation reaction such as temperature, pH value and reactant concentration. Meanwhile, surface modification solutions can be customized according to carrier resin types and product requirements, perfectly meeting the personalized production needs of different customers.
• Uncompromising batch stability guarantee: Adopting a DCS fully automated closed-loop precipitation production line to achieve precise control of the entire reaction process, the coefficient of variation of particle size distribution is ≤10%, and the specific surface area difference between batches is ≤3%. This ensures highly consistent performance of each batch of products, avoiding masterbatch formula adjustments and product quality problems caused by raw material performance fluctuations, and reducing the difficulty of customers' production control.
• Large-scale production and fast delivery capability: With an 8,000-ton/year dedicated precipitation production line, safety stock is always available for standard models, enabling fast delivery within 5-8 days to meet customers' stock preparation needs for large-scale production. Meanwhile, the modular modification production line can quickly respond to customization needs and greatly shorten the customization cycle.

Frequently Asked Questions

Q: What are the core advantages of this Precipitated Silica Opening Agent compared with sol-gel products?

A: The core advantages are mainly reflected in three aspects: first, lower large-scale production costs, which can significantly reduce customers' procurement costs with the same performance and higher cost-effectiveness; second, more flexible regulation of particle size and pore structure, which can be precisely customized according to customer needs with stronger adaptability; third, better dispersibility and processing stability, the particle structure of the precipitation method is more adapted to the high-temperature processing of plastic masterbatches, not prone to agglomeration and precipitation, with better batch stability.

Q: Can this Precipitated Silica Opening Agent be used in the production of high-transparency food packaging films?

A: Yes. Through precise particle size regulation and surface modification optimization, this product can minimize the impact on film light transmittance and haze. Meanwhile, it strictly complies with food contact standards such as FDA and EU 10/2011, and a complete compliance test report can be provided. It is widely used in high-transparency food packaging films such as PE, PP and BOPP with no compliance risks and performance impacts.

Q: Is this opening agent compatible with common plastic processing additives such as antioxidants, slip agents and antistatic agents?

A: Fully compatible. This product has passed comprehensive additive compatibility tests and has excellent compatibility with various common plastic additives. No chemical reaction, delamination or agglomeration occurs after mixing. It also has a synergistic effect with slip agents such as erucamide and oleamide, further reducing the film friction coefficient and simultaneously improving the anti-blocking and processing performance of products.

Q: What is the customization cycle for adjusting particle size or modification solutions after small-batch trial use?

A: No long waiting is required. We have modular precipitation reaction production lines and surface modification production lines, which can quickly adjust production parameters and modification solutions. The cycle for conventional parameter adjustment and modification customization can be shortened to 7-10 days. Meanwhile, we provide performance comparison tests before and after customization and full-process verification services, helping customers quickly complete product adaptation.

Certifications & Honors

• FSSC22000 Food Safety System Certification
• ISO22000:2018 Food Safety Management System Certification
• ISO9001:2015 Quality Management System Certification
• SHC HALAL Certification
• OU KOSHER Certification
• FDA Food Contact Material Certification
• FAMI-QS Feed Additive Quality Management System Certification
• SEDEX Social Accountability Certification
• Food Additive Production License
• Feed Additive Production License
• National High-Tech Enterprise
• Guangzhou Specialized, Sophisticated, Unique and Novel Enterprise
• 17 authorized patents from the National Intellectual Property Administration