Over 10,000+ customers' choice, Focus on screening industry 40+ years
Screen blinding is not necessarily caused by the screen mesh itself. Material properties, aperture size, and operating conditions can all affect screening performance.
Fine plastic powders: Small particles may adhere to the screen surface or accumulate around the mesh openings, reducing screen passage.
Irregular plastic particles: Flakes, strips, and other irregularly shaped particles produced during crushing may become trapped in the screen apertures.
Plastic powders prone to static buildup: Electrostatic charges generated during conveying and screening may cause fine particles to adhere to the mesh or form agglomerates.
Mixed materials with a wide particle size distribution: When coarse and fine particles are present in varying proportions, an unsuitable mesh specification may affect screening efficiency and increase the risk of blinding.
For this reason, reducing screen blinding requires more than simply replacing the mesh. Material characteristics, target particle size, and equipment configuration should all be considered.
Gaofu Machinery's plastic rotary vibratory sieve can be used to screen a range of plastic powders and granular materials. Depending on the application, the equipment can be configured with suitable mesh specifications, screen decks, and optional cleaning systems.
1. PVC, PE, and PP Powders
For plastic powders with uneven particle size distributions, an appropriately selected screen mesh can separate oversized particles from finer material. When handling fine powders that are prone to static buildup or adhesion, factors such as mesh material, screen cleaning methods, and operating conditions should also be evaluated.
2. Plastic Granules and Crushed Materials
Crushed plastic materials often contain particles of different sizes and irregular shapes. A suitable mesh aperture can help classify these materials into different size fractions. Mesh selection should take both the target particle size and particle shape into account to reduce the likelihood of particles becoming lodged in the openings.
3. Recycled Plastic Powders and Mixed Plastic Materials
During recycled plastic processing, materials may contain fine fragments, oversized particles, or agglomerates. By selecting the appropriate number of screen decks and mesh specifications, a rotary vibratory sieve can perform particle size classification and help prepare materials for subsequent processes such as blending and pelletizing.
It is important to note that screening separates materials primarily according to particle size. It does not replace other processes such as washing, air separation, or metal detection.
Different types of screen blinding require different approaches. When configuring a plastic rotary vibratory sieve, Gaofu Machinery considers several factors to help maintain effective material flow through the screen.
Select the appropriate mesh size: Choose the aperture size according to the material's particle size distribution and the required screening accuracy. Proper matching helps reduce screening issues caused by unsuitable mesh specifications.
Choose a suitable mesh structure and material: Select the screen type based on whether the application involves plastic powders, granules, or flakes, while considering screening requirements and maintenance needs.
Evaluate optional screen cleaning devices: For fine powders or specific plastic materials that are prone to blocking mesh openings, bouncing balls or ultrasonic screen cleaning systems may be considered to help reduce screen blinding.
Monitor operating conditions: Feed rate, material moisture, static electricity, and vibration settings can all influence screening performance. Operating parameters should be adjusted according to actual production conditions.
Ultrasonic cleaning and other auxiliary devices are not necessary for every application. Their suitability should be evaluated based on material properties, mesh specifications, and actual screening tests.
Because plastic materials vary considerably, selecting screening equipment based solely on mesh size may not fully address production requirements. Several factors should be considered during equipment selection:
Material type and condition: Identify whether the material is plastic powder, granules, flakes, or crushed plastic. Determine whether it is prone to static buildup or agglomeration.
Screening objectives: Define the particle size range to be removed or classified, including oversized particles and fine powder.
Required throughput and operating schedule: Select the equipment size according to the actual feed rate and production requirements to avoid a mismatch between equipment capacity and production demand.
Screen blinding conditions: Provide details about where blockage occurs, the material's physical characteristics, and the mesh specifications currently in use. This information helps identify potential causes and suitable cleaning options.
Installation requirements: Consider the available floor space, inlet and discharge positions, and connections to upstream and downstream equipment.
Evaluating these factors together makes it easier to select a rotary vibratory sieve that matches the actual production environment.
From fine plastic powders to crushed plastic granules, different materials present different screening challenges. When screen blinding occurs, proper equipment selection, suitable mesh specifications, and appropriate cleaning options are all important considerations.
Gaofu Machinery provides rotary vibratory sieve configuration recommendations based on plastic material characteristics, screening requirements, and production conditions. Discussing the specific application and conducting material screening tests can help identify the causes of screen blinding and determine a suitable screening solution for the production line.
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
