In recent years, with the improvement of environmental awareness and the continuous progress of recycling technology, optical sorting technology has achieved remarkable results in the field of R-PET recycling. As a key tool in this field, optical sorters are widely used in the sorting process of R-PET of different colors with their efficient sorting capabilities. At the same time, polymer optical sorters have also demonstrated the ability to identify and separate R-PET material differences to a certain extent.
Challenges of R-PET optical sorting
- Extremely light color differences are difficult to identify: In recent years, color sorters can efficiently distinguish most R-PET with obvious color differences, but it is difficult to accurately identify the differences between extremely light colors, which affects the purity and reuse value of recycled materials.
- PET-G low-temperature materials are difficult to remove: As a low-temperature material, PET-G has similar physical properties to conventional PET, which makes it difficult for traditional material identification technology to accurately remove it from recycled materials. It not only increases the difficulty of subsequent processing, but also affects the quality of recycled products.
- Food contact materials are difficult to identify: During the recycling process, common food contact materials such as PC, Tritan, and PPSU are often difficult to be effectively identified by color sorters and material machines because they have certain similarities with R-PET in appearance and material. The mixing of these materials poses a serious quality threat to recycled products.
Goldern optical sorting solution for R-PET
The extremely light color recognition technology equipped in the GVR Pro series is a device specially developed by Golden for the problem of identifying micro-color difference flakes in R-PET materials. It can accurately identify micro-color difference bottle flakes in R-PET materials and improve the accuracy and efficiency of color sorting.
At the same time, GOLDEN SORTER’s R&D team has achieved high-precision recognition of micro differences in high-end materials such as PC, Tritan, PPSU, and PET-G by continuously optimizing algorithms and upgrading hardware. In response to the demand for high-purity materials of polyester plastic R-PET, the customized GIR Pro series models not only have extremely high recognition accuracy, but are also easy to operate and have strong stability. They are well received by users and are praised as “zero PC models.”
