1. Product Description

Silica Opening Agent is a special core functional raw material for manufacturing opening masterbatches in the plastic processing industry. Refined 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). Based on an ultra-high purity of over 99.8%, this product optimizes the particle structure for the opening requirements of plastic films, forming a uniform "micro-protrusion" structure in opening masterbatches, which can accurately solve the opening problems of plastic films and effectively reduce the adhesion between films without affecting key indicators such as light transmittance, heat seal strength and tensile performance of films throughout the process. It is suitable for the large-scale production of opening masterbatches for various plastic substrates including PE, PP, PVC, PET, BOPP and CPP. Note: This silica is used to produce opening masterbatches, which are then applied in film production. It cannot be directly added to films for use.

2. Technical Parameters

3. Application Description

By precisely regulating physical and chemical properties, Silica Opening Agent deeply meets the core requirements of manufacturing various plastic opening masterbatches, providing accurate and efficient opening support for plastic films, sheets and other products. The core application values are as follows:

1. Enabling precise preparation of opening masterbatches: The uniform particle size optimized for opening requirements enables perfect mixing with carrier resins such as LLDPE and PP, with a filling amount of 10%-30%; no precipitation or crystal spots during masterbatch production, no equipment wear in subsequent film blowing/casting processing. The melt flow index of the masterbatch remains stable at 2.5–3.0 g/10 min after adding 20% of this opening agent, meeting the stringent requirements of high-speed film blowing.

2. Accurately solving film opening problems: When the prepared opening masterbatch is added to plastic films at 0.2%-0.8%, silica particles form uniform "micro-protrusions" on the film surface, reducing the contact area between films by more than 60% and lowering the adhesion force from 500 mN/25 mm to below 50 mN/25 mm, completely solving the industry pain points such as tight winding of film rolls and difficult opening.

3.  Maximally ensuring the core properties of films: Relying on customized surface modification technology, it has excellent compatibility with the resin matrix and has no negative impact on the core properties of films - the light transmittance of PE film remains above 90%, the tensile strength loss ≤3%, and the heat seal strength retention ≥95%, meeting the quality requirements of high-end films.

4. Adapting to the production of opening masterbatches for multiple substrates: It can fully cover the production of opening masterbatches for substrates such as PE (low density, linear low density), PP (homopolymer, copolymer), PVC (flexible) and PET. For example, in the opening masterbatch for BOPP films, it can improve the smoothness of high-speed film slitting; in the opening masterbatch for CPP films, it can solve the adhesion problem of films during low-temperature lamination.

5. Improving efficiency throughout the entire film processing line: Effectively improving film opening performance, helping to increase the efficiency of subsequent processes such as film slitting, printing, bag making and packaging by 30%, reducing the defective rate caused by film adhesion and lowering the comprehensive production cost of enterprises.

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 opening masterbatches (e.g., PE, PP, PET) and the requirements of target film products (food packaging, daily chemical packaging, industrial films), 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 opening masterbatches and avoiding film quality issues such as poor opening performance and appearance defects caused by the performance fluctuation of opening agents.

5. Frequently Asked Questions

Q: Can this opening agent be used for the production of food contact grade opening 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 opening masterbatches for food packaging.

Q: How to select the appropriate parameters (e.g., specific surface area, particle size) of the opening agent according to the film type?

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

Q: Is there any compatibility problem between this opening 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 films 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