Product Description

**Material
 1,1. The core boards are made of mixture from PP and PE, so it combines the rigidity of PP and the flexible and weather-resistant capabilities of PE.
 2,filtration membrane is made of non-woven fabrics, permeability and water logging ability enjoying good
 3,filtration membrane are firm together when wrapping the core board by ultrasound

***features
 1,Monolithic vertical drain is a new product to process soft foundation and super soft foundation on the basis of traditional pvd .
 2,Fundamental element: Monolithic vertical drain uses ultrasound generator whose  vibration frequency is 5 billion HZ to firm filtration membrane and core board together.
 3,Won't generate heat (maybe local tepefaction ) and peculiar smell, and need not gluewater and is harmless to workers' health when wrapping the core board by ultrasound.
 4,The monolithic structure of PVD makes the connection more firmly and difficult peeling off.
 5,The draining board owns excellent rigidity and endures great side pressure, so it is not easily to be bent or fallen down and keeps good shape, which can insure tonnage and other technical parameter is stable.
 6,Prefabricated vertical drain owns excellent tenacity. Its draining function will not be influenced when foundation subsides forcing the draining board bent.