How is HDPE hollow wall wound pipe produced?
HDPE hollow wall wound pipes are manufactured by extruding HDPE resin through a die to form a continuous pipe. The pipe is then wound and welded to create a hollow, structural wall.
Extrusion of HDPE:
HDPE resin is melted and extruded through a specialized die, creating a continuous pipe.
The die's design determines the shape of the pipe, including its inner and outer wall surfaces and the hollow ribs.
Winding and Welding:
The extruded pipe is then wrapped around a circular mandrel or mold.
A second extruder extrudes a layer of hot-melt HDPE, which is fused to the winding to create a strong and durable seam.
The winding process creates the characteristic hollow ribs within the pipe wall.
To manufacture HDPE pipe, HDPE resin is heated and squeezed through a mold in a process called extrusion.
First, raw polyethylene material in the form of pellets is moved from a silo into a hopper dryer in order to remove any moisture.
Once exiting the die, the pipe quickly enters the cooling tank, which spray water onto the pipe’s exterior in order to reduce the temperature of the pipe. This is done in 10-degree increments; since polyethylene has a high specific heat capacity, the pipe must be cooled in stages to avoid its shape from deforming.
Your message must be between 20-3,000 characters!
