Product Description

Food Contact Grade Silica Opening Agent is a high-end special anti-blocking raw material specially developed for food and pharmaceutical contact plastic packaging. Prepared via food-grade clean processes and precise surface modification technology, it strictly complies with the most stringent food contact material laws, regulations and standards in the world, including China GB 4806 series, FDA 21 CFR §177.1520 and EU No 10/2011. With ultra-high purity silica (≥99.8%) as the core component, it is produced with food-grade raw materials and fully enclosed clean production lines, with heavy metal and harmful impurity contents far lower than the national standard limits. Odorless, non-precipitating and non-migrating, it forms a uniform and stable micro-protrusion isolation structure in food packaging anti-blocking masterbatches, effectively solving problems such as difficult unwinding, tight winding and blocking of food packaging films. Meanwhile, it has no impact on core film indicators such as light transmittance, heat seal strength and tensile properties, ensuring food contact safety throughout the process. Fully compatible with the production of anti-blocking masterbatches for various food contact plastic substrates such as PE, PP, PET, BOPP and CPP, it is a safe, stable and efficient special anti-blocking solution for the food packaging field. (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

Focusing on the dual core needs of safety compliance and anti-blocking performance in the food and pharmaceutical packaging field, Food Contact Grade Silica Opening Agent provides a safe, efficient and stable anti-blocking solution for various food contact plastic packaging through full-process food-grade control. Its core application values are as follows:

1. Full-process food-grade compliance, ensuring packaging safety: This product is produced with food-grade raw materials in a 10,000-class clean workshop with full-process traceability, strictly complying with food contact material laws and standards of mainstream countries and regions around the world including China, the United States, the European Union, Japan and South Korea. The contents of heavy metals and harmful impurities are far lower than regulatory limits, odorless, non-precipitating and non-migrating, which can completely eliminate the risk of food and pharmaceutical content contamination by packaging raw materials and ensure the food safety and compliance of end products.

2. Efficiently and stably solving anti-blocking pain points of food packaging films: Only 0.2%-0.8% of the prepared food-grade anti-blocking masterbatch needs to be added to plastic films to form a uniform and stable micro-protrusion isolation layer on the film surface, reducing the contact area between films by more than 60% and the blocking force from 500mN/25mm to below 50mN/25mm. It completely resolves industry pain points such as tight winding of food packaging films, blocking after high-temperature sterilization and anti-blocking failure in cold storage and freezing environments, with long-lasting and stable anti-blocking effects, adapting to all-scenario applications of food packaging.

3. Maximally protecting the core performance of food packaging films: Relying on food-grade exclusive surface modification technology, it has excellent compatibility with various resin matrices for food packaging and causes no negative impact on the core performance of films 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%, with no crystal spots, no fish eyes and no yellowing. Even after extreme treatments such as high-temperature retorting and low-temperature freezing, it can still maintain excellent performance stability, meeting the quality requirements of various high-end food packaging such as snack food, fresh cold chain, high-temperature retorting and pharmaceutical packaging.

4. Full coverage of all food packaging substrates: Fully compatible with various food contact plastic substrates such as PE (LDPE, LLDPE, mPE), PP (homopolymer, copolymer), PET, BOPP and CPP. It provides precisely adapted anti-blocking effects for snack food flexible packaging, dairy product packaging, fresh cold chain packaging, as well as high-temperature retort bags and pharmaceutical packaging films, perfectly matching the processing technologies and application scenarios of various food packaging.

5. Excellent compatibility, adapted for the whole process processing of food packaging: This product has passed exclusive compatibility tests with food-grade additives and has excellent compatibility with various food packaging additives such as food-grade slip agents, antioxidants and antistatic agents. No chemical reaction or harmful substance generation occurs after mixing. It also has a synergistic effect with food-grade slip agents, further reducing the film friction coefficient, improving the processing efficiency of high-speed film slitting, printing, bag making and packaging processes, reducing the defective rate and lowering the comprehensive production costs of enterprises.

Factory Advantages

• Food-grade exclusive customization capability: Exclusive food-grade surface modification solutions and parameter selection can be customized according to food packaging substrate types, content characteristics (e.g., oily, acidic, high-temperature retorting), processing technologies and application environments. Meanwhile, customized products complying with the laws and standards of different countries and regions can be provided to meet customers' global market layout needs.
• Full-process food-grade compliance control: A full-process food-grade compliance control system from raw material procurement, production process to finished product delivery has been established. The dedicated clean production line realizes fully enclosed automated production. Each batch of products has passed strict food-grade compliance testing, and a complete third-party test report, compliance statement and full-process traceability documents can be provided, escorting customers' compliant production.
• Uncompromising batch stability guarantee: Adopting a DCS fully automated closed-loop food-grade production line, the coefficient of variation of particle size distribution is precisely controlled to ≤10%, and the specific surface area difference between batches is ≤3%. This ensures highly consistent performance, purity and compliance of each batch of products, avoiding food packaging quality problems and compliance risks caused by raw material performance fluctuations, and adapting to large-scale and standardized food packaging production needs.

Frequently Asked Questions

Q: Which food contact material standards of countries and regions does this Food Contact Grade Silica Opening Agent comply with?

A: This product strictly complies with food contact material laws and standards of mainstream countries and regions around the world, including China GB 4806.6-2016, US FDA 21 CFR §177.1520, EU No 10/2011, German LFGB, Japanese Ministry of Health, Labour and Welfare Notification No. 370, and relevant standards of the Korean Ministry of Food and Drug Safety. Corresponding third-party test reports and compliance statements can be provided with no compliance risks for global market access.

Q: Can this product be used for high-temperature retorting food packaging and low-temperature cold chain food packaging?

A: Yes. This product has excellent high and low temperature resistance, with stable performance in the application environment of -40℃~135℃, no precipitation, no migration and no anti-blocking failure. After 121℃ high-temperature retorting and -18℃ low-temperature freezing treatment, it can still maintain excellent anti-blocking effects and film performance, perfectly adapting to the packaging needs of various extreme application scenarios such as high-temperature retorting food, fresh cold chain food and frozen food.

Q: Will the use of this product in food packaging films produce odor and affect the sensory quality of food?

A: No. This product is produced via food-grade clean processes with a loss on drying of ≤3% and no detected VOCs, completely odorless. Meanwhile, exclusive surface modification technology ensures no small molecule precipitation during high-temperature processing, which will not have any impact on the sensory quality of food such as odor and taste, and can be safely applied in food packaging scenarios sensitive to odor such as drinking water, dairy products and snack food.

Q: What is the customization cycle for products complying with the laws of specific export countries after small-batch trial use?

A: No long waiting is required. We have a food-grade modular surface modification production line, which can quickly adjust production processes and testing standards to customize products complying with the laws of specific countries and regions. The conventional customization cycle can be shortened to 7-10 days. Meanwhile, we provide compliance test reports corresponding to the standards and full-process technical support, helping customers quickly complete product adaptation and market access.

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