Screening equipment plays an important role in the production of plastic powder and plastic granules. Coreal Machinery summarizes some application cases for you:
1. Pretreatment of plastic granule/powder raw materials
Removing impurities: Various impurities may be mixed into the raw materials for plastic production, such as metal debris, stones, wood chips, etc. Through screening equipment, these impurities can be removed to ensure the purity of the raw materials entering the production process, and avoid impurities causing wear and blockage on subsequent processing equipment, and affecting product quality.
Grading screening: Plastic granule raw materials often have different particle size specifications. According to the requirements of the production process, the raw materials need to be graded and screened. For example, when producing high-precision plastic products, plastic granules with uniform particle size are required. Through screening equipment, particles that do not meet the particle size requirements can be separated to ensure that the particle size of the raw materials put into production is consistent, which is conducive to improving the stability and quality of the product.
Equipment: Linear vibrating screen, Reciprocating Vibrating Screen
2. Screening application in plastic powder production
Controlling particle size distribution: The particle size and distribution of plastic powder have an important impact on its fluidity, coating performance and the quality of the final product. Screening equipment can accurately classify plastic powder according to different particle size ranges to produce plastic powder products that meet specific uses and quality standards. For example, plastic powder used for powder coatings usually requires a particle size distribution within a narrow range to ensure the uniformity and adhesion of the coating during the spraying process.
Improve product quality: During the production of plastic powder, some agglomerates or lumps of larger particles may be generated. Screening equipment can effectively screen out these agglomerates and lumps to keep the plastic powder in good dispersion and fineness, thereby improving the quality and performance of the plastic powder.
Equipment: Ultrasonic vibrating screen/Rotary vibrating screen
3. Screening application in plastic particle production
Particle size classification: The particle size of plastic particles directly affects their processing performance and application range. Through screening equipment, plastic particles can be classified according to different particle sizes to meet the needs of different customers and production processes. For example, the injection molding process usually requires plastic particles with larger particle size and regular shape to facilitate uniform feeding and plasticization in the injection molding machine; while plastic particles used for extrusion molding may require relatively small and uniform particle size to ensure the stability of the extrusion process and the dimensional accuracy of the product.
4. Quality inspection and control of plastic particles/powders
In-production inspection: On the production line of plastic powder and plastic particles, online screening equipment can be installed to detect and screen the products in real time. By continuously monitoring the particle size distribution and impurity content of the product, abnormal conditions in the production process, such as equipment failure and process parameter changes, can be discovered in time, so that timely measures can be taken to make adjustments and ensure the stability of product quality.
Finished product inspection: Before product packaging, the plastic powder and plastic particles are subjected to final screening inspection to ensure that the product meets quality standards and customer requirements. The finished products are strictly graded and screened by screening equipment to eliminate products that do not meet the particle size requirements, contain impurities or have other quality problems, so as to ensure the quality and reputation of the products shipped.
Equipment: Rotary vibrating screen, Ultrasonic vibrating screen, Linear vibrating screen, Reciprocating Vibrating Screen
If you encounter screening problems in the plastics industry, please feel free to contact Coreal Machinery, which will provide you with suitable solutions and reliable screening equipment.