High-speed film recycling and granulation device
A granulation device and film technology, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of increasing the risk of thermal degradation, reducing the physical properties of materials, and high processing costs, so as to achieve good mechanical properties, a wide range of applicable materials, and processing high efficiency effect
Active Publication Date: 2021-06-29
HUNAN UNIV OF TECH
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Problems solved by technology
[0003] Because the film scraps are usually thin films, the discarded film waste has a low apparent density, and it is difficult to use the traditional crushing and re-extrusion granulation process for processing. This process is inefficient for materials with low apparent density. The processing cost is high, and multiple high-temperature treatments will increase the thermal history of the plastic, increase the risk of thermal degradation, and reduce the physical properties of the material
Method used
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Embodiment 1
[0021] Such as figure 1 As shown, a high-speed film recycling and granulation device includes a heating hob for cutting the film, a granulation tower 2 for receiving the film material cut by the hob, and a discharge pipe 3 connected to the discharge end of the granulation tower , the hob includes a roller 11 and cutter teeth 12 arranged on the roller, the cutter teeth 12 are evenly arranged in the circumferential direction of the roller 11, and the length of each cutter tooth is equal to the length of the roller, and the tip of the cutter tooth It is the blade 13, and the material of the blade 13 is Teflon of temperature-resistant and non-adhesive plastic. The hob 11 needs to be heated when cutting the film. The heating temperature is 80-140°C, preferably 100°C. The feature is that the film cut by the high-temperature blade quickly shrinks into small plastic pieces. The cutting direction of the blade 13 is the same as the rotation direction of the roller 11, and the rotation d...
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The invention relates to the technical field of film recovery, and discloses a high-speed film recovery and granulation device, which includes a heating hob for cutting the film, and a granulation tower for receiving film materials cut by the hob. The granulation tower has a discharge end, The hob includes rollers and cutter teeth on the rollers. A spiral groove extending along the height direction of the pelletizing tower is provided in the pelletizing tower. The end of the spiral groove is the discharge end of the pelletizing tower. The gas makes the film material enter along the beginning of the spiral groove and finally eject from the discharge end. Taking advantage of the small thickness of film plastics and the characteristics of easy shrinkage and curling when heated, a high-temperature hob is used to slice, and high-temperature gas is used to prepare the plastic particles that shrink and curl under heat into plastic particles with uniform particles and dense texture, and the mechanical properties of the particle materials remain good. , high processing efficiency, wide range of applicable materials.
Description
technical field [0001] The invention relates to the technical field of film recycling, in particular to a high-speed film recycling and granulation device. Background technique [0002] Plastic film is the largest and most widely used product in the application of plastic products. Its application fields not only involve industry, but also involve the daily life of people. Traditional plastic film forming processes include bubble blown film method, casting method, multi-roller calendering method, laminating method, etc. However, in all film processing and forming processes, there is a trimming process, which removes the edges of the film during processing. Trim removal, which creates a lot of scrap. Compared with the waste produced by injection molding and other molding methods, these waste materials have higher material purity, lower material thermal degradation process, and less loss of mechanical properties. Therefore, they can be recycled and used as a high-end material...
Claims
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IPC IPC(8): B29B17/04
CPCB29B17/0412B29B2017/044Y02W30/62
Inventor 曾广胜江太君尹琛孟聪陈一胡灿刘水长
Owner HUNAN UNIV OF TECH