How to accurately recycle waste plastics

The recycling of discarded plastic products shoulders the dual task of environmental protection and the sustainable development of the plastics industry. One of the most difficult problems in the recycling of plastic products is how to properly classify products. The series of recycling equipment developed by UNISORT in Germany provides a strong technical guarantee for the recycling of plastic products.

The UNISORTP sorter developed by the company can objectively sort and sort certain recycled materials from pre-sorted recycled light-package materials. The light-packing material to be sorted is mounted on a conveyor belt, and the conveyor belt passes through the identification system at a speed of 3 m/s. The near-infrared sensor identifies the target material through the detecting element and sends a discharge signal. The specially-configured unloading device can The identified materials are separately discharged by the pneumatic flow and sent to the next processing step.

Designed for light-package materials, the UNISORTP sorter makes it easy to switch from beverage packaging to mixed plastic sorting. Whether it is sorting PET, HDPE, PP, PS, PVC, mixed plastic packaging or paper packaging materials, it can be decided by the operator. This sorting machine has the characteristics of convenient operation and high efficiency. Functional conversions that meet other classification requirements can be accomplished by simply manually operating the selector switch or by fully automatic conversion through a programmable logic controller.

In the recycling of waste plastic products, it is important to distinguish products of different colors. The color sorting machine UNISORTCX can simultaneously sort three color materials through a double discharge plate. In this sorting step, the PET bottles of the two colors are sorted in the forward direction with the relevant discharge plates, and the smeared PET bottles can be sorted out. Efficient PET color recognition sensor, including an accelerated conveyor belt, a collection hood, and an extended conveyor belt, a discharge spray plate, and an operating member that transport the sorted material to the next process, all components are assembled on the frame. The color sorter accurately and quickly completes the color sorting of PET bottles, and its highly efficient color sensor detection component recognizes the PET bottles to be sorted and issues a discharge command.

The UNISORTMulti5 sorter uses a smart combination with a second discharge spray plate on the sorters UniSortP and UniSortC, which allows each sorter to sort out the third material. This type of sorting machine can meet different classification requirements, smoothly complete the sorting, and can randomly sort and sort the materials and colors. The UniSortP sensor uses a near-infrared process to simultaneously sort three different materials. The UniSortC sensor has an efficient color recognition system that also allows for the simultaneous sorting of the three colors of the material. This model is equipped with a touch panel and all functions can be pre-selected via the programmable logic controller interface.

Products made of other materials such as plastic and metal meet the needs of people in some aspects, but it brings a lot of trouble to recycling. UNISOFT also provides users with a composite material sorting system. In order to detect the impurity material, the company uses a sophisticated near-infrared technology UNISORTP sensor combined with a specially configured metal detector, and the device is equipped with a pneumatic system with strong impact. This device separates unwanted metal-containing materials.

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