The most widely used paper-plastic separation method
The common method of paper-plastic separation and recycling of many paper-plastic wastes is to separate the plastic box paper inside, and then classify it for recycling. On the one hand, it can save resources and turn waste into treasure, on the other hand, it can also reduce its impact on the environment. influences. There are several ways to separate paper and plastic:
1. Thermal division method
A method for separating paper and plastic by changing plasticity after heating
A, hot cylinder method
The separation device is composed of an electrically heated chrome-plated material cylinder and a built-in hollow cylinder (drum) with a scraper. The scraper is connected to the wall of the heating cylinder, and the two rotate in opposite directions. The material is added from the feeding, and the plastic component in it starts to melt once it contacts with the hot cylinder, adheres to the cylinder wall, scrapes it off with a scraper, and falls into the trough. This method can separate more than 90% of the plastic from the paper, and the separated plastic contains a very small amount of paper, which can be controlled below 1%.
B, hot air method
The plastic film is separated from the paper by the principle of shrinking the plastic film when it is heated and reducing the specific area. The film and paper mixture is sent to the heating zone, the heating box can be an agricultural grain dryer, which is granulated so that its surface area is reduced, and then the mixture of it and paper is sent to the air separator, and the air flow removes the mixture. The paper is carried away and the thermoplastic pellets fall to the bottom of the separator. This method can almost completely separate the plastic from the paper.
2. Wet method
The light material obtained from the dry separation equipment is sent to the crusher, the crushed pulp flows out from the small holes on the sorting plate, and the remaining plastic is discharged from a separation outlet, and then sent to the dehydrator Dehydration, and then sent to the air separator for separation.
3. Electric separation method
The mixture of paper and plastic is fed into the separator by a vibrating feeder, falling into the rotating grinding drum, and then sent to the corona area formed between the wire electrode and the grinding, and the paper is sucked towards the electrode, The plastic is still attached to the drum, and as the drum rotates, the plastic falls to its bottom and is collected. When using this method, the humidity has a great influence on the separation results. When the humidity of the mixture is 15%, although the paper and plastic can be separated, the plastic will still be polluted by a large amount of paper. When the humidity is increased to more than 50%, the Plastic and paper are completely separated.
The above is the relevant introduction about the separation of paper and plastic. The paper and plastic separation equipment developed and manufactured by SUNY GROUP can efficiently recycle and reuse various waste paper and plastic products, and at the same time, we can make relevant recycling programs according to the customer's materials. . If you need it, please feel free to contact us for consultation.
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