HDPE pipe manufacturing machines create strong, durable and environmentally friendly plastic piping that is used in a variety of crucial applications in today's world.
What are HDPE pipe manufacturing machines?
High-density polyethylene or HDPE pipe piping provides several advantages over other types of piping, including a long service life and strong, durable construction with leak-proof joints. These properties typically result in overall savings vis a vis metallic piping. HDPE piping is often used to replace aging infrastructure and in particular for municipal water and wastewater systems, among a range of applications, including use with slurries, irrigation, chemicals, hazardous wastes, and compressed gases.
HDPE Pipe Manufacturing Machines - The Process
HDPE pipe manufacturing machines operate by a basic set of principles pellets of HDPE are introduced into the barrel of the machinery through a hopper, often with color and a UV inhibitor to ensure a long lifetime of use in outdoor conditions. The molten plastic material passes through the barrel to the transition zone where the pellets are melted and then to the metering zone where the material is extruded or forced around a die that creates the cylindrical shape of the pipe.
Precision is essential at every step of the manufacturing process as it affects the quality of the finished product, including overall density, strength and crack resistance, all vital parameters of plastic piping. The rate at which the HDPE resin is fed into the machine and the exact temperatures that must be maintained throughout the process are extremely important. As the material is melted and the temperature rises in the transitional zone of the barrel, gases must be vented out since they can also affect the integrity of the finished product. Once the molten HDPE flows around the die, it begins to cool. An even, controlled cooling process using air and water ensures structural integrity.