Product Description

Silica Opening Agent for BOPP Films is a high-end special anti-blocking raw material specially developed for biaxially oriented polypropylene (BOPP) films. Prepared via sol-gel precise synthesis and BOPP process exclusive surface modification technology, it strictly complies with industry standards, EU EN 14639 and relevant Food Contact Materials regulations. With ultra-high purity silica (≥99.8%) as the core component, it features directionally optimized particle structure, particle size distribution and surface characteristics tailored to the key demands of BOPP film production—biaxial stretching process, high temperature resistance, and high gloss and high transparency requirements. With moderate particle hardness, stretch resistance, no breakage and no agglomeration, it can withstand high-magnification biaxial stretching during BOPP film production while maintaining a complete particle structure, forming a uniform and stable micro-protrusion isolation structure on the film surface. It effectively solves industry pain points such as tight winding, blocking and difficult unwinding in the high-speed production of BOPP films, and has no impact on core BOPP film indicators such as gloss, transparency, tensile strength and printing lamination performance. Fully compatible with the production of various BOPP films such as general clear films, heat seal films, printing films, cigarette films and food packaging films, it is a high-efficiency special anti-blocking solution for the BOPP film 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 core characteristics and industry pain points of the BOPP film biaxial stretching process, Silica Opening Agent for BOPP Films is directionally optimized in all-dimensional product performance, providing an efficient, stable and highly adaptable special anti-blocking solution for various BOPP films. Its core application values are as follows:

1. Perfectly adapted for BOPP biaxial stretching process with stable performance during stretching: Tailored to the process characteristics of high-magnification longitudinal and transverse biaxial stretching of BOPP films, this product has directionally optimized particle hardness, structure and surface modification solution. During the high-temperature stretching and setting of BOPP films above 200℃, the particles have no breakage, no deformation, no agglomeration and no resin encapsulation, and can always maintain a complete particle structure, forming a uniform and stable micro-protrusion isolation layer on the film surface. It completely resolves industry pain points of common opening agents such as particle breakage, anti-blocking failure and crystal spot generation during biaxial stretching.

2. Efficiently solving all-scenario anti-blocking and blocking pain points of BOPP films: Only 0.2%-0.6% of the prepared BOPP special anti-blocking masterbatch needs to be added to the film, reducing the contact area between films by more than 65% and the blocking force from 500mN/25mm to below 40mN/25mm. It completely resolves core pain points in high-speed BOPP film production such as tight winding, blocking after high-temperature setting, attenuation of anti-blocking performance after long-term storage and poor film running during printing and lamination, with long-lasting and stable anti-blocking effects, perfectly adapting to the production requirements of BOPP film production lines with a speed of over 400m/min.

3. Maximally protecting the core optical and printing performance of BOPP films: Adopting ultra-narrow particle size distribution and BOPP exclusive surface modification technology, this product has excellent compatibility with polypropylene resin and causes no negative impact on the core performance of BOPP films after addition—the film maintains a light transmittance of over 92%, a gloss value above 85, a tensile strength and elongation at break decrease of ≤2%, and a heat seal strength retention rate of ≥95%, with no crystal spots, no fish eyes and no pitting. It perfectly meets the quality requirements of high-end BOPP films with stringent optical and printing lamination performance requirements such as printing films, cigarette films and food packaging films.

4. Full coverage of all BOPP film types: Fully compatible with the production of various BOPP films such as general clear films, heat seal films, single/double-sided corona-treated printing films, cigarette films, food packaging films, label films, capacitor films and pearl films. It provides precisely adapted anti-blocking effects for both general BOPP films and high-end functional BOPP films, and can replace imported similar products to achieve high-cost-effective import substitution.

5. Excellent compatibility, improving full-process production efficiency of BOPP: This product has passed comprehensive compatibility tests with BOPP special additives and has excellent compatibility with various BOPP special additives such as polypropylene special slip agents, antistatic agents, antioxidants and nucleating agents. No chemical reaction, delamination or crystal spots occur after mixing. It also has a synergistic effect with BOPP special slip agents such as erucamide, further reducing the film friction coefficient from 0.3 to below 0.12, greatly improving the processing efficiency of high-speed BOPP film slitting, printing, lamination and bag making processes, reducing the defective rate and downtime costs, and lowering the comprehensive production costs of enterprises.

Factory Advantages

• BOPP process exclusive customization capability: Product particle size, specific surface area, particle size distribution and surface modification solution can be directionally optimized according to BOPP film types (e.g., printing films, heat-seal films, cigarette films), thickness specifications, stretching processes, production line speed and end applications, precisely matching the BOPP production lines and product requirements of different customers and providing exclusive anti-blocking solutions.
• Uncompromising batch stability guarantee: Adopting a fully automated closed-loop production line to achieve precise control of the entire process from synthesis to surface modification, the coefficient of variation of particle size distribution is ≤8%, and the specific surface area difference between batches is ≤2%. This ensures highly consistent performance of each batch of products, completely avoiding BOPP film quality problems such as uneven anti-blocking, crystal spots and unqualified optical performance caused by fluctuations in opening agent performance, and adapting to the high-speed, continuous and large-scale production requirements of BOPP films.
• Full-process BOPP technical service support: A professional technical team with more than ten years of service experience in the BOPP film industry provides full-process technical support from parameter selection, masterbatch formula optimization, biaxial stretching process debugging to mass production implementation, quickly solving various technical problems of customers in BOPP film production such as anti-blocking, optical performance and processing performance.

Frequently Asked Questions

Q: Can this Silica Opening Agent for BOPP Films be adapted for high-speed BOPP production lines with a speed of over 400m/min?

A: Yes. Tailored for high-speed BOPP production lines, this product has optimized particle dispersibility, thermal stability and anti-blocking effects. It can still achieve uniform dispersion with no agglomeration and no crystal spots in production lines with a speed of over 400m/min, with stable and uniform anti-blocking effects. It can perfectly adapt to the production requirements of various high-speed BOPP production lines at home and abroad, and has been stably applied in high-speed production lines of many leading domestic BOPP film enterprises.

Q: Will the use of this product in high-end printing-grade BOPP films affect the film's printing and lamination performance?

A: No. Adopting ultra-narrow particle size distribution and exclusive surface modification technology, this product ensures a high surface flatness of BOPP films after addition, with no excessively raised particles, no crystal spots and no pitting, and no negative impact on the film's corona treatment effect. It can guarantee the ink adhesion of printing and the peel strength of laminated films, perfectly adapting to the production requirements of high-end gravure and flexo printing BOPP films.

Q: What are the core advantages of this BOPP special opening agent compared with ordinary silica opening agents?

A: The core advantages are mainly reflected in four aspects: first, perfectly adapted for biaxial stretching process—the particles have no breakage and no deformation during high-temperature and high-magnification stretching, with long-lasting and stable anti-blocking effects, while ordinary opening agents are prone to particle breakage and anti-blocking failure; second, ultra-narrow particle size distribution—minimal impact on the gloss and transparency of BOPP films, more adapted to high-end high-gloss BOPP films; third, better compatibility with polypropylene resin and better dispersibility, not prone to crystal spots and fish eyes; fourth, better temperature resistance—adapted for the BOPP film high-temperature setting process at 240℃ with no decomposition and no yellowing.

Q: What is the customization cycle for exclusive models adapted for specific BOPP production lines after small-batch trial use?

A: No long waiting is required. We have modular synthesis and surface modification production lines dedicated to BOPP, which can quickly adjust particle size parameters and modification solutions. The customization cycle can be shortened to 7-10 days. Meanwhile, we provide performance comparison tests before and after customization, and full-process verification services for masterbatch preparation and BOPP film stretching tests, helping customers quickly complete product adaptation and mass production implementation.

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