The plastic products of high-pressure polyethylene generally have packaging films, industrial films, agricultural films and other films. The raw materials are relatively soft, and the melting point is not very high, and it is easy to be plasticized.
1. Raw material sorting: packaging film, such as woven bag inner film, food packaging film, daily necessities packaging film, including greenhouse film, most of these films are natural, but also light blue, black, it is best to separate the raw materials according to different colors.
2. After pulverizing and cleaning, the sorted raw materials are put into the pulverizer, and automatically pulverized into the washing machine. After the pulverized material flows to the water tank, it is best to rotate again. The purpose is to further rinse the cleaning point, and the alkali can be put into the cleaning tank. Clean the product.
3. Go to the dryer to dry the remaining water, but dry it under the conditions, in order to save electricity costs and improve quality, but to prevent secondary pollution of the material during drying, it can also be directly granulated with water, the current granulation Most of the machines are water granulators, which are directly put into the barrel for plasticization from the pool.
4. The granulation is carried out in the barrel, and the raw material is slowly plasticized under the push of the screw at a high temperature of heating, and then needs to be filtered. If the application is to blow the film again, the filter mesh needs to be 60-80 mesh, so that the material is discharged. It can be blown and blown; if it is injection, 40-60 mesh can be used.
5. After the pelletizing, after forming from the die, the temperature of the drawn material is too high, so it needs to be placed in water for cooling, and then pelletized, so that the whole process.
Vacuum Tube Collectors include CPC Solar Collector, U-shape solar collector without CPC, heat pipe Vacuum Tube Solar Collector, LPC open loop collectors. No matter pressurized or non-pressurized collectors, they are called vacuum tube solar collector once it consists of all glass Vacuum Tubes .
CPC solar collector is the highest efficiency among all Vacuum Tube Solar Collectors.
Advantages
and benefits
- Short installation times due to complete pre-assembled collectors.
- Simple and reliable connection technology in order to extend several
collectors side by side through pre-assembled screw connections. Further
tubing and an extensive thermal insulation is not necessary.
- Integrated return pipe and highly efficient thermal insulation.
- Manageable module sizes for a very high performance and a quick and
easy installation.
- Flow and return pipes may be fitted on the left or the right side of the
manifold.
- High flexibility due to the different widths and lengths of the
collectors.
- Quick and easy exchange of the evacuated tubes without using any tools.
Vacuum Tube Solar Collectors
Vacuum Tube Solar Collector,Vacuum Tubes Solar Water Collector ,Vacuum Tube Heat Solar Collector,Evacuated Vacuum Tube Solar Collector
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