New equipment for classifying recycled plastics accurately

The recycling of discarded plastic products shoulders the double responsibility of environmental protection and sustainable development of the plastics industry. One of the most thorny issues in the recycling of plastic products is how to classify the products reasonably. The series of recycling equipment developed by the UNISORT company in Germany provides a strong technical guarantee for the recycling of plastic products.

The UNISORTP separator developed by the company can purposefully sort and sort out certain recycled materials from pre-sorted recycled light packaging materials. The light packaging material to be sorted is mounted on a conveyor belt that passes through the identification system at a speed of 3 m/s. The near-infrared ray sensor identifies the target material and sends a discharge signal through the detection element. The specially set unloading device can be used. The identified materials are separately discharged by pneumatic flow and sent to the next processing step.

The UNISORTP classifier is specifically designed for light-weight packaging materials and can easily convert functions from the sorting of beverage packaging materials to the sorting of mixed plastics. Whether it is sorting PET, HDPE, PP, PS, PVC, mixed plastic packaging boxes or paper packaging materials, it can be decided by the operator. This sorter has the features of convenient operation and high efficiency. The conversion of functions that meet other classification requirements can be accomplished by simply manually operating the selection switch or by fully automatic conversion by a programmable logic controller.

In the recycling of used plastic products, it is very important to distinguish the products of different colors. The color sorter UNISORTCX can sort the three color materials at the same time through the double stripper plate. In this sorting step, the two color PET bottles are positively sorted out with the relevant stripper plates, and sifted variegated PET bottles can also be sorted. High-efficiency PET color recognition sensors, including accelerating conveyor belts, collecting hoods, and extension conveyors, unloading jets, operating parts that transport the sorted material to the next process, all components are assembled on the frame. The color sorter can accurately and quickly complete the color sorting of PET bottles. Its high-efficiency color sensor detection element can identify the PET bottle to be sorted and issue a discharge command.

The UNISORT Multi5 sorter uses a smart combination. A second discharge spray plate is installed on the separators UniSortP and UniSortC, respectively, thereby enabling each sorter to sort out the third material. This type of sorting machine can meet different classification requirements, complete the sorting smoothly, and can randomly sort the types and colors of materials. The UniSortP sensor uses near-infrared technology to sort three different materials simultaneously. The subsequent UniSortC sensor has an efficient color recognition system. It can also sort materials in three colors at the same time. The model has a touch-type operation screen, and all functions can also be pre-selected via the programmable logic controller interface.

Products made of plastics and metals and other materials meet the needs of people in some aspects of use, but they have brought a lot of trouble to recycling. For this reason UNISOFT also provides users with a composite material sorting system. In order to detect foreign materials, the company's UNISORTP sensor using mature near-infrared technology is combined with a specially configured metal detector and the device is equipped with a pneumatic system with a strong impact. This device separates unwanted metal-containing materials.