Control on PPR pipe production equipment and processing technology

The impact and process of PPR PPR pipe production equipment control tube is made (PP and PE) fumed synthetic polypropylene random copolymer, its molecular structure is characterized by irregular PE PP molecules which link the molecular weight of from 300,000 to 800,000 dollars. The use of raw materials to produce PP-R pipe, also known as random copolymer polypropylene pipe, the late 1980s and early 1990s, the development and application of new plastic pipe products. With its own excellent performance and a wider range of applications, has a place in the plastic pipe market, it is recognized green products. But in recent years through the operation of the market, we find the PP-R pipe market there have been many problems, which largely restricted the healthy development of PP-R pipe. Impact and process control PPR pipe production equipment: 1, PP-R flow performance is poor, and therefore should be considered in the choice of the extruder screw length to diameter ratio (L: D) at 28: 1 or more (30- for the benefit of between 33), preferably a low-pressure extrusion die extrusion dies. At present, the domestic use of the more advanced German Battenfeld or technology to produce extrusion lines. 2, PP-R is a semi-crystalline plastic pipe processing its relatively strict process control, the cooling temperature is especially important. Long cooling time, cooling water temperature is high will cause increased shrinkage pipe; cooling is too low, too fast, can cause residual stress is too large, so that the pipe at the time of impact, low impact resistance. 3, two of the more important factor is the depth of the mold PPR pipe cooling and fittings of the socket. Also, if there is embedded a metal tube metal insert should also have certain requirements, otherwise it will create connections seepage during use. According to these years, usage analysis, PPR pipe http://www.lianlipipe.com problem in the system mostly in pipes and fittings with the. Welcome to buy! Pipe Ten brand http://www.lianlipipe.com face milling http://qdjichuang.net biaxial wetting mixer http://qdjichuang.net