Over 10,000+ customers' choice, Focus on screening industry 40+ years
Crushing and grinding processes often produce recycled plastic materials with varying particle sizes. In addition to the main material fraction, the output may contain fine fragments, powder, and particles that differ considerably in size.
Variations in fine particle content and particle size distribution may affect subsequent processing in several ways:
Material conveying: Fine particles mixed with larger granules or flakes may change the flow characteristics of the material, potentially affecting conveying and feeding operations.
Batching and mixing: When materials with different particle sizes are unevenly distributed, additional process control may be needed during batching and blending.
Downstream processing: Changes in fine particle content and particle size composition may require adjustments to raw material preparation, depending on the pelletizing or other processing requirements.
Dust management: Fine plastic powders may become airborne during material transfer. Enclosed conveying and suitable dust collection measures should be considered where necessary.
For these reasons, introducing an appropriate screening stage can help optimize particle size distribution and prepare recycled plastic materials for subsequent processing.
A plastic rotary vibratory sieve uses vibration to move materials across the screen surface. Different particle sizes are separated according to the mesh aperture. Depending on the material type and processing requirements, the equipment can be used in several applications.
1. Screening PET Bottle Flakes and Crushed Plastics
PET bottle flakes and other crushed plastic materials may contain fine fragments and powder generated during processing. By selecting a suitable mesh size, smaller particles that meet the aperture requirements can be separated from larger flakes, making subsequent material handling more manageable.
2. Classification of Recycled Plastic Pellets
For recycled plastic pellets produced through pelletizing, suitable screen meshes can be selected according to the required finished pellet size. The screening process helps classify the pellets and separate oversized or undersized particles from the target size range.
3. Fine Powder Separation from Recycled Plastics
For plastic powders generated during recycling, the appropriate mesh size can be selected to separate different particle size fractions. This provides screening support for subsequent blending, storage, or other processing operations.
It is important to note that a rotary vibratory sieve separates materials primarily according to particle size. If fine particles are close in size to the main material fraction, or if contaminants with similar particle sizes but different material compositions need to be removed, additional separation processes may be required.
Recycled plastic materials vary considerably in shape and physical characteristics. PET flakes, PP regrind, PE granules, and recycled plastic powders have different particle sizes, shapes, and flow properties. Therefore, the same screening configuration may not be suitable for every application.
Gaofu Machinery's plastic rotary vibratory sieve can be configured according to actual operating conditions, with several factors taken into consideration.
Mesh Specifications Based on Target Particle Size
Fine particle separation requires mesh apertures that match the target particle size. Mesh openings that are too large or too small may affect the separation results. Material particle size distribution should therefore be considered during equipment selection.
Number of Screen Decks Based on Classification Requirements
If the production process only requires fine particle removal, a suitable single-stage screening arrangement may be sufficient. When materials need to be divided into several particle size fractions, a multi-deck screen configuration can be considered.
Screen Cleaning Options Based on Material Properties
Some recycled plastic powders may be prone to static buildup, adhesion, or screen blinding. For these applications, optional accessories such as bouncing balls or ultrasonic screen cleaning systems can be evaluated according to mesh specifications and operating conditions. These devices can help maintain screen passage during operation.
Equipment Connections Matched to Production Line Layout
The screening machine should be properly integrated with upstream and downstream equipment, such as crushers, conveyors, storage hoppers, and pelletizing preparation systems. Selecting suitable feed and discharge arrangements according to the plant layout and material flow can help reduce unnecessary material handling.
For plastic recycling facilities, screening is not an isolated operation. It is an important stage connecting different processing steps.
For example, after plastic materials are crushed, they can be fed into a rotary vibratory sieve when screening is required by the production process. The machine can separate fine fragments and classify particles according to size. The screened materials can then be directed to washing, storage, or subsequent processing stages, depending on the production requirements.
In recycled plastic pelletizing lines, screening equipment can also be installed at an appropriate point in the process to control the particle size of materials before they enter downstream operations.
A well-planned screening arrangement helps define how different particle size fractions are handled and allows manufacturers to adjust mesh specifications and equipment configurations according to changing production requirements.
As plastic recycling operations place increasing emphasis on raw material handling and particle size control, fine particle separation has become an important consideration for many recycling production lines. From PET bottle flakes and crushed plastics to recycled plastic powders, each material requires a screening approach suited to its characteristics.
Gaofu Machinery's plastic rotary vibratory sieve can be configured according to recycled material types, fine particle separation requirements, target particle sizes, and production line layouts. With suitable mesh selection, screen deck arrangements, and optional cleaning systems, the equipment provides screening support for material classification and fine powder separation in plastic recycling operations.
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.
