How is HDPE Pipe Made

The raw material for the HDPE tube is thermoplastic HDPE (high density polyethylene). HDPE was created in the 1930s and used in high frequency radar cables during the Second World War. It was quickly brought to market. The HDPE pipe is a flexible plastic tube for fluid and gas delivery that is commonly used to replace aged concrete or steel tube. Once the HDPE profiled pipe is produced, you will have a strong polymer material that can be used in a variety of applications and applications in your home or facility.

In order to produce fixed length HDPE profiles spiral pipe, the production of HDPE pipes is often done with the aid of associated molds. The HDPE resin is heated and melted and extruded through a model to a fixed length, so that pipes of the same specification can be produced. The following shows the HDPE pipe extrusion process: the polyethylene material is pulled from the silo and passed to a dryer to remove any moisture from the granules. It is then pulled into the mixer with a vacuum pump where it is heated with a barrel heater. The PE material melts at high temperatures and is shaped into a circle by the model. It should be noted that the newly formed pipeline needs to enter the cooling tank quickly, and the pipeline must be cooled in stages to avoid deformation of the HDPE profiled pipe.

The wall thickness of the HDPE pipe is determined by several factors: the size of the mold, the speed at which the machine screw is produced, and the speed at which the tractor is towed. If there is a requirement for the wall thickness of the pipe, then these three aspects need to be controlled. If the HDPE tube fails at the beginning to heat the fixed shape, it is difficult to be gently pulled when it reaches the "tract tractor".

Because carbon black is added to produce UV-resistant products, we usually add 3-5% carbon black to transparent polyethylene, so black pipes are also common. But there are other colors to choose from. Pipes of other colors are only colored skin or stripes on the outside. HDPE profiled pipe with blue stripes is made of different mold for stripe HDPE tubes with a small passage through which colored material passes, just before it is pushed through the mold. This means that the stripes are formed as an integral part of the tube and cannot be separated from the main body. The coextruded or coextruded HDPE tube has a second extrusion screw that adds additional color skin around the black HDPE profiles spiral pipe, which allows the tube to be colored externally for identification or thermal cooling requirements.

Digital or powder printers, sizes, types, dates and manufacturer names are printed on the side of the pipe. HDPE tubes can be cut to a fixed length with a saw or wound into different lengths on a coiler.

High density polyethylene is a commonly used petroleum thermoplastic, that is, produced by applying high temperatures to petroleum under controlled conditions. If you look at the plastic under a microscope, you will find that it has a lot of particles, because during its production, gas molecules will attach to form a polymer, and then the polymer will produce polyethylene. Due to its particle composition, this polymer emits the brightest light in applications that require moisture resistance and cost effectiveness. HDPE tubes offer unparalleled advantages over traditional pipes.

EAGLE Company specializes in the development and manufacture of HDPE profiles, tanks and related accessories with proven technology and core equipment. If you have a need on HDPE, please contact us in time, we will try our best to provide you with a satisfactory service to meet your existing needs.