According to the market demands
and the oriented industry policy of the state, our company has independently and
successfully developed the polythene and PVC double wall corrugated pipe
extrusion line in combination with the latest technology of our foreign
counterparts. The PE and PVC double wall corrugated pipes produced by this line
are widely applied in drainage projects for public works and used as buried
plastic drainage pipes.
PE double wall corrugated pipes developed by Fangli Company take two structures:
vertical and horizontal. The production line is configured with high efficiency
screw extruder, laminar flow distributor, dual-passage spiral composite
extrusion molds, shaper, spray cooling device, ring-shaped code spraying
machine, dual-blade radial cutter and stacking device.
The machine adopts special IKV extrusion system of Germany. The material
extruded enjoy stable plastication and high efficiency. The mold surface is
nitrided polished. The mold is fitted with a wall-thickness regulating device to
suit for production of different raw materials and rigid suspension materials.
The forming and extruding mold work together to achieve the vacuum blow molding
SV technology and belling of extruded pipes at the socket joint. There are
three-dimension adjustment and exit function in sudden power cut for forming
machine. Labels for the extruded pipes are sprayed with a ring-shaped code
spraying machine. Product information on the same trough can be marked by means
of code spraying. Dual-blade cutter ensures accurate cutting peeling position
through infrared light sense positioning. The extruding line is equipped with
Siemens computer control system. The system adopts upper and lower position sets
for management. The upper position employs pictures and bar diagram for display
and has memory function of extruding and forming technologies and operations.
The lower position may select a programmable control.
In addition to the PE double wall corrugated pipe extrusion line, our company
has also researched and successfully developed PVC double wall corrugated pipe
extrusion line with configurations being basically the same as those of PE
double wall corrugated pipe extrusion line. The difference is that a pipe
expander is used for on-line expansion.