Product Introduction of Anti-Blocking Silica (Opening Agent) by Shandong Zhonglian Chemical Co., Ltd. I. Product Overview This product is a high-performance anti-blocking silica (opening agent) independently developed by Shandong Zhonglian Chemical Co., Ltd. It is a new type of functional material custom-developed to address the core pain points in multiple industries such as plastics, films, coatings, and packaging: "surface adhesion, poor slip performance, and difficult opening of products caused by insufficient surface roughness and low lubricity of traditional materials". Relying on advanced gas phase/precipitation production processes and precise particle size control technology, the product not only has excellent anti-blocking and slip properties but also possesses outstanding dispersibility, heat resistance, and compatibility, which can significantly improve the processing efficiency and use performance of downstream products. Currently, it is widely used in BOPP films, PE/PVC films, plastic packaging, coatings, inks and other fields, and is exported to many countries and regions such as Europe, Southeast Asia, and the Middle East, winning high recognition from customers at home and abroad. II. Core Product Advantages 1. Excellent Anti-Blocking and Slip Performance The product features a unique porous structure and precise particle size distribution (primary particle size 10-100nm, agglomerate particle size 1-20μm), which can form a uniform "micro-rough" surface on the substrate. When added to films or plastic products, it effectively reduces the contact area between product surfaces, lowers the coefficient of friction to 0.1-0.3, and achieves excellent anti-blocking effect (blocking force ≤ 0.5N/25mm). It fundamentally solves the problem of product adhesion during storage and use, ensuring smooth opening and improving production efficiency. At the same time, it has good high-temperature resistance (stable performance at -50℃-250℃) and can adapt to high-temperature processing processes such as film blowing and extrusion. 2. High Purity and Multi-Scenario Adaptability Strictly adhering to material standards for different industries, the product has a purity of over 99.5% and extremely low impurity content, with heavy metal (lead, arsenic, mercury, etc.) content ≤ 10ppm, which can meet the usage requirements of food contact materials, medical packaging, industrial materials and other scenarios. It fully complies with the national standard GB/T 20020-2013 "Fumed Silica" and international standards such as FDA (Food and Drug Administration) and REACH (Registration, Evaluation, Authorization and Restriction of Chemicals). The entire production process is completed in GMP-certified workshops and ISO Class 8 clean workshops. A full-chain quality control system has been established from raw material selection (high-purity quartz sand is used) to finished product delivery, ensuring the safe adaptability of the product in different fields. 3. Outstanding Dispersibility and Compatibility Relying on advanced surface modification technology (silane coupling agent treatment) and precise particle size regulation, the product has excellent dispersibility in organic systems such as polyethylene, polypropylene, and polyester, and can be uniformly dispersed without agglomeration even under low-speed mixing. Its dispersion efficiency is more than 30% higher than that of traditional anti-blocking agents. It has good compatibility with various resins and additives, does not affect the transparency, color, or mechanical properties of the base material, and can maintain stable performance during long-term use. In film products, it can improve light transmittance by 5%-10% while enhancing anti-blocking performance. 4. Full-Dimensional Customization Capability It supports full-dimensional customization services, and can customize particle size distribution (primary particle size 10-100nm, agglomerate particle size 1-20μm), surface modification type (methylsilane, vinylsilane, amino silane, etc.), and anti-blocking grade (general grade, food contact grade, high-transparency grade) according to the needs of different industries. Based on the process characteristics of different fields such as plastic films, packaging materials, and coatings, it provides personalized solutions. For example, it customizes high-transparency anti-blocking agents for BOPP packaging films and food-grade opening agents for food contact plastic products. 5. Full-Lifecycle Service Guarantee It provides "pre-sales, in-sales, and after-sales" full-lifecycle technical support services. Pre-sales, 3-5 samples with different parameters can be provided for customers to test according to their needs, and a professional technical team is equipped to provide application scheme design (such as addition ratio, mixing process); in-sales, technical personnel can be dispatched to guide key links such as feeding sequence and dispersion speed on site; after-sales, a 24-hour response mechanism is established to provide rapid solutions to problems such as poor dispersion and insufficient anti-blocking effect during product application, ensuring the maximum realization of product value. III. Production Strength Guarantee Shandong Zhonglian Chemical Co., Ltd. has been deeply engaged in the silica material industry for more than 30 years. As a national high-tech enterprise and a "Specialized, Refined, Differential and Innovative" enterprise in Shandong Province, it provides a solid guarantee for product quality. The company has 20 invention patents and 5 utility model patents, and has built a leading domestic gas phase and precipitation method anti-blocking silica production base with an annual output of 10,000 tons. Equipped with advanced testing equipment such as laser particle size analyzers, friction coefficient testers, and high-performance liquid chromatographs, it has established 32 full-process testing procedures covering key links such as raw material purity testing, intermediate product particle size testing, and finished product anti-blocking performance testing. It has obtained ISO9001 quality management system, ISO14001 environmental management system, OHSAS18001 occupational health and safety management system, and GMP certification, realizing full-chain standardized control from R&D, production to quality inspection. IV. Packaging and Transportation Specifications 1. Standard Packaging Specifications Adopting a standardized layered packaging design, it provides multiple specification options: 25kg/bag (inner PE vacuum bag + outer kraft paper composite woven bag), 500kg/big bag (inner PE film + outer reinforced woven bag). At the same time, it can provide tank truck transportation solutions according to customers' bulk order needs, meeting the needs of different order quantities and application scenarios. 2. Professional Moisture-Proof Protection Design In view of the storage needs of the product, a dual moisture-proof protection scheme is adopted: Scheme 1 is inner vacuum PE bag + middle aluminum-plastic composite film + outer wear-resistant woven bag; Scheme 2 is inner inert gas-filled PE bag + outer anti-static woven bag. It can effectively isolate moisture, oxygen and dust, preventing the product from absorbing moisture or being contaminated during transportation and storage. 3. Storage and Transportation Requirements Storage conditions: Should be stored in a cool, dry and well-ventilated airtight warehouse, avoiding direct sunlight, rain and proximity to heat sources. The relative humidity of the warehouse should be controlled below 60%; Shelf life: 36 months under standard storage conditions; Transportation attribute: The product is a non-hazardous chemical and can be globally delivered through multiple transportation methods such as sea freight, land freight and air freight. During transportation, extrusion, collision and rain soaking should be avoided. 4. Standardized Labeling Each batch of product packaging is strictly labeled with information such as product name (anti-blocking silica/opening agent), model, particle size, anti-blocking grade, net weight, production batch number, production date, shelf life, production license number and safety warnings; multi-language labels can be customized according to customer needs to ensure compliance with the regulatory requirements of different countries and regions. V. Applicable Application Fields The product has a wide range of application scenarios, covering multiple core industries: In the plastic film field: Used in BOPP, PE, PVC, PET and other films (such as packaging films, agricultural films, adhesive films) as an anti-blocking agent and slip agent, which can prevent film adhesion, improve opening performance and processing efficiency, and maintain film transparency; In the plastic packaging field: Applied to plastic bottles, caps, food packaging boxes and other products to enhance surface slip performance, prevent mutual adhesion during storage and transportation, and improve user experience; In the coating and ink field: As a matting agent and anti-blocking agent, it is used in wood coatings, industrial coatings, printing inks, etc., to improve surface roughness, prevent film adhesion, and enhance scratch resistance; In the food contact material field: Used in food packaging films, disposable tableware and other products that meet FDA standards, ensuring safe use while solving the problem of product blocking; In addition, it can also be applied in rubber products (improving slip performance), electronic packaging materials (anti-blocking and moisture-proof) and other fields, adapting to the needs of different industries with its diversified properties. VI. Conclusion The anti-blocking silica (opening agent) of Shandong Zhonglian Chemical Co., Ltd. is positioned with the core of "precision particle size control, multi-scenario compatibility and strict quality assurance". Relying on 76 years of industry experience, advanced production technology and full-chain service system, it provides customized anti-blocking silica solutions for customers in various industries. The company is committed to promoting the upgrading of downstream industries with high-performance products and sincerely welcomes customers at home and abroad to consult, test samples and cooperate.