In recent years, in terms of the development of resistant PVC double pipe, there has been a major breakthrough, a fundamental solution to adding antistatic agent (PVC double-pipe flame resistant properties of the pipe has little effect, because fewer add copies) for impact strength of the pipe, the surface resistivity (antistatic performance) may require a lot better than the MT181, and impact strength of the pipe is quite small. However, this technique only rests in the hands of a small number of manufacturers. So far the double-antibody capable of producing PVC pipe manufacturers are still few.
Although the U-PVC double the amount currently used anti-pipes in the coal mine is still far less than the double anti-PE pipe, but mine surveys used by the U-PVC double anti tube found that due to its low price, high strength, easy installation, ease of maintenance, etc., has become a double anti-PE pipe strong competitor. Multi-layer composite technology: including three co-extruded, refers to the inner and outer tubes antistatic, flame retardant, the middle layer is made of impact; or inner and outer antistatic, flame retardant, the middle layer is made of metal wire wrapped around the impact strength.
The disadvantage with pvc double anti-mine is strength to the tube below the pipe, so the installation and handling process must prevent violent collision, to prevent damage to pipes, pipe fittings or cause hidden cracks. advantage of pvc double anti tubes are:Low price、Resistant、Fluid resistance、Strong chemical stability、Anti-aging, long life、Lightweight, convenient transportation、Easy to connect, easy construction, low installation costs、Not only anti-static, and flame retardant, is a dual anti-plastic pipe、In the case where the same conditions, the thin wall inner diameter, through the fluid, the price is lower than the other pipe.
Equipment components
Mixing -----main extruder---- Triple-coated mold----sizing---cooling- Traction---cutting---winding
Mixing-- Inner and outer walls extruder
Technical Difficulties
1.Formulation process is the key to a stable production.
2.Coated mold and compression ratio of the flow channel design is the determining factor in the device.
3.Stability and fine-tune the performance of the entire device is to get control of one of the factors that qualified pipe.
4.Operating responsibility and proficiency of workers.
Advantages
1.And university research cooperation to obtain technical support, a stable formulation and process.
2.Mold design and reasonable structure, and can be more business through the use of good feedback.
3.Whole line equipment design advanced and mature, to the greatest meet the requirements of the production of multilayer composite pipe.
4.Can training technicians and operators to further solve business worries.
5.Turnkey projects and 24-hour butler service, and business users can grow together.
