Whether it is primary plastic pellets or recycled pellets, if there are more impurities or pollutants, the purity will be insufficient. The impurities may cause surface defects and performance degradation of the product, and in severe cases, the entire batch of products may be scrapped. Therefore, using a plastic pellet color sorter to ensure the high purity of the particles is crucial to protecting the value of downstream plastic processing companies.
Common quality problems of plastic pellets
- Uneven color: In the same batch of plastic particles, the color depth varies. Some plastic particles are lighter in color, while others are darker in color. This may be caused by uneven color of raw materials, improper color matching, or unreasonable production process parameters.
- Foreign matter impurities: Other substances such as metal, paper, dust, etc. are mixed into plastic particles. These foreign matter impurities may be mixed into the raw materials, or they may be particles and chips generated by the wear of equipment and tools during the production process.
- Uneven particle size: Inconsistent size of plastic particles, deformed particles, etc., too fast or too low speed of production equipment may affect the crushing of particles. In addition, when adjusting equipment parameters, if they are not correctly set according to the characteristics of raw materials and production requirements, uneven particle size may occur.
- Extremely tiny black spots: During the granulation process, due to the failure to clean the equipment thoroughly before starting up, uneven stirring of the mixture in the reactor, uneven temperature and humidity of the heating or cooling system, etc.
Common problems such as large color differences, uneven shapes and sizes, and foreign matter mixing can be identified by the naked eye or traditional sorting equipment in most cases, but traditional identification technology is powerless when it comes to sorting extremely tiny black dots.
In order to meet this industry challenge, GOLDEN SORTER launched high-end plastic pellet sorting machines to effectively solve the problem of micro-difference quality of plastic particles.
Pellet sorter application range:
- Sorting of transparent, opaque and translucent plastic pellets
- Sorting of large, deformed, variegated and dirty particles
- Sorting of micro-color difference particles
- Supports sorting of tiny black spots above 0.1 mm
Independently developed core technologies
- Micro-difference camera recognition system, ultra-high-definition imaging, ultra-low distortion: By capturing images of plastic particles with ultra-high-definition cameras, it is possible to identify tiny differences in color, shape, and texture between particles. Ultra-low distortion technology ensures the accuracy and authenticity of imaging and avoids misjudgment caused by image deformation.
- Stereoscopic focus sorting technology: The equipment can obtain three-dimensional information of plastic particles, not just two-dimensional images, thereby improving the accuracy of sorting.
- Multi-dimensional mirror recognition technology: Combining image information from multiple angles and fields of view, it can provide a more comprehensive understanding of the characteristics of particles. By comprehensively analyzing information from multiple views.
- Micro-defect color recognition technology: The technology is specifically designed to identify tiny defects and color differences in plastic particles.







