1. Product Description

Silica Opening Agent is a universal high-end opening raw material in the plastic processing industry. Prepared 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). With ultra-high purity of over 99.8% as the core advantage, this product features precisely regulated particle size and specific surface area, agglomeration-free and good dispersibility. It can form a uniform "micro-protrusion" structure in opening masterbatches, providing efficient and stable opening effect for various plastic films, effectively reducing the adhesion between films without affecting the key indicators such as light transmittance, heat seal strength and tensile performance of films. It is suitable for the production of opening masterbatches for various plastic substrates including PE, PP, PVC, PET, BOPP and CPP, combining universality and high performance. 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

As a universal high-end opening raw material, Silica Opening Agent deeply meets the core requirements of manufacturing various plastic opening masterbatches, providing efficient and stable opening support for different types of plastic films. The core application values are as follows:

1. Adapting to the preparation of universal opening masterbatches: Uniform particle size and excellent dispersibility enable uniform mixing with various carrier resins such as LLDPE, PP and PET, with the filling amount flexibly adjustable to 10%-30%; no precipitation or crystal points during masterbatch forming, no equipment wear in subsequent film blowing, casting, extrusion and other processing processes, meeting the production requirements of various opening masterbatches.

2. Providing efficient and stable opening effect: When the prepared opening masterbatch is added to plastic films at 0.2%-0.8%, uniform "micro-protrusions" can be formed on the film surface, reducing the contact area between films by more than 60%, and adhesion from 500 mN/25 mm to below 50 mN/25 mm, solving the problems of tight winding and difficult opening of various film rolls with a long-lasting and stable opening effect.

3. Comprehensively ensuring the core properties of films: Relying on excellent surface modification technology, it has good compatibility with various plastic resin matrices, and the addition has no negative impact on the core properties of films - the light transmittance of PE film remains above 90%, the tensile strength reduction is ≤3%, and the heat seal strength retention rate is ≥95%, meeting the quality requirements of films of different grades.

4. Covering the opening requirements of all types of films: It can be widely used in the production of opening masterbatches for all types of plastic films including PE (low density, linear low density), PP (homopolymer, copolymer), PVC (flexible), PET, BOPP and CPP, and can provide adapted opening effect for both thin-specification packaging films and thick-specification industrial films.

5. Meeting the requirements of high-speed processing and large-scale production: The PE film blowing opening masterbatch with 20% of this opening agent added has a melt flow index stably at 2.5-3.0g/10min, fully meeting the production requirements of high-speed film blowing; high performance stability between batches adapts to the large-scale and standardized production of opening masterbatches and films, reducing the difficulty of production control.

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, industrial films, daily chemical packaging), 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 problems such as poor opening performance and quality fluctuation caused by the performance fluctuation of opening agents.

5. Frequently Asked Questions

Q: Can this Silica 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 at all in the application of PE and PET opening masterbatches for food packaging.

Q: Does the universal Silica Opening Agent need to adjust the addition amount according to the film thickness?

A: Yes. Our technical team will accurately recommend the addition amount and parameter combination according to your film thickness (e.g., 20μm thin film, 50μm thick film), substrate type and opening requirements, ensuring the opening effect while maximizing the film quality.

Q: Is there an optimal ratio suggestion when this opening agent is used combined with slip agents?

A: Yes. Our technical team can provide the optimal ratio suggestion of opening agent and slip agents (e.g., erucamide, oleamide) according to your target film type and processing requirements. The two produce a synergistic effect that can reduce the film friction coefficient from 0.3 to below 0.15, further improving the opening and processing performance.

Q: Is the process complicated to customize the opening agent with exclusive parameters after small-batch trial?

A: No. We have a professional R&D team and flexible production technology, which can quickly customize exclusive parameters according to your trial feedback. The modular surface modification production line shortens the customization cycle to 7-10 days, and we also provide the whole-process performance testing and verification services.

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