Brief description:Twin-screw extrusion granulators are mainly used for recycling and pelletizing waste plastics, transforming recycled plastics of different shapes, cleanliness levels, and even compositions into uniform plastic pellets with consistent size and material properties.
Before recycling waste plastics into pellets, it is necessary to manually sort and remove impurities from the waste plastics. Generally, waste plastics contain a large amount of impurities such as sand and mud. The removal of these impurities is an important part of the plastic recycling and pelletizing process. As a technician, to conduct reasonable impurity removal, professional methods and techniques are required, which involves measurement. By weighing, the recycler can propose methods for reducing prices and deducting impurities to avoid unnecessary losses.
Take a certain weight of the sample, and separate the plastic (methods such as cutting, tearing, heating, or burning can be used). Weigh the impurities, plastic, and mixed content to determine their quantities. This method is mainly used for measuring metal and plastic, paper and plastic, fabric and plastic, and plastic with non-plastic components. For valuable impurities, the cost is calculated based on the recycling price, and after comprehensive accounting, the transaction price is determined.
Twin-screw extrusion granulators are mainly used for recycling waste plastics into pellets. They process recycled plastics of different shapes, cleanliness levels, and even compositions to produce plastic pellets that are uniform in size and material properties. This pre-granulation process is carried out before new plastics enter the molding production stage, to achieve certain physical or chemical characteristics (typically by adding modifiers or creating plastic alloys).
Its housing is bolted to the machine body, and the mold core seat inside the head is secured with a nut at the head inlet port. In front of the mold core seat, there is a mold core, and both the mold core and the mold core seat have a central hole for passing the core wire. An equalizing ring is installed at the front of the head to balance the pressure. The extrusion molding section consists of a die holder and a die, and the position of the die can be adjusted by bolts through the support, to adjust the relative position of the die to the mold core, which facilitates the uniformity of the thickness of the extruded layer.
Do you know the specific methods for repairing mold damage during production using a twin-screw extrusion granulator? Let's take a look below:
1. For molds that have been in use for a long time, the sizing bushing or die lip may increase in inner diameter due to prolonged wear. In this case, a newly manufactured sizing bushing should be replaced; if the die lip is severely worn and the working surface finish is compromised, it should be reground and rechromed.
2. If pitting due to rust appears on the surface of the components in the waste plastic pelletizing machine mold, the pits should first be ground flat, then a chrome plating should be applied, and finally, the surface should be polished before use.
For parts in large molds, when deep pits appear on the working surface, electric welding can be used to build up the defective areas, which are then ground and smoothed.
4, Minor scratches or burrs on mold components can be removed by grinding with fine oilstone or fine sandpaper.
Nanjing Xintuo Intelligent Equipment Co., Ltd. was established on May 29, 2020, with Zhou Xianting as the legal representative. The registered capital is 10 million RMB, and the unified social credit code is 91320113MA21LF2H92. The company is located in the Baima Town Industrial Concentration Zone, Lishui District, Nanjing City. It belongs to the other manufacturing industry. Its business scope includes: Permitted projects: import and export of goods; import and export of technology (projects that require approval by relevant departments can only be carried out after obtaining such approval, specific business items are subject to the approval results). General projects: sales of intelligent material handling equipment; research and development of machinery and equipment; general equipment manufacturing (excluding special equipment manufacturing); specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); sales of metal products; wholesale of electronic components; sales of instruments and meters; sales of artificial intelligence hardware; processing and sales of mechanical parts and components; general component manufacturing; sales of plastic products; production and sales of Class I medical devices; sales of Class II medical devices; sales of health supplies and disposable medical supplies; sales of special labor protective equipment; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion (except for projects that require approval, activities can be conducted independently according to the business license). The current operating status of Nanjing Xintuo Intelligent Equipment Co., Ltd. is active (in operation, open, registered).
