how to produce O-PVC pipe?

The fundamental principle of the production of O-PVC pipes concerns with knowledge about the behavior of modified PVC in the production process. O-PVC (oriented PVC) goes through a special stretching process that changes the orientation of the material, producing a pipe that, in comparison to ordinary pvc pipe machine line , will have enhanced impact-resisting properties and strength. To prevent the presence of weak points in the process, stable mixing of raw materials, control of the heating process, and precision forming is required. Used in various factories in the water supply system as it is made of suitable material for high pressure. This step of temperature or stretching may lead to a pipe failure later in the program. For this reason, operators have to be continually monitored and focused on all stages from compounding to final cooling.

What is the difference between OPVC and UPVC pipe ?

The main difference between OPVC and UPVC pipe is its process of its development and treatment.UPVC is the name given to unplasticized PVC. It is made of hard plastic pipe extrusion in the process of PVC resin, stabilizer and additive are heated in the process of being extruded. Shapes do not change: UPVC pipes are made of tough plastic, corrosion-resistant and used in various sectors, like water supply, drainage Pipe extruder and electrical conduit etc. These are relatively simple to make, and have been around for a long time.Oriented PVC is the name of this PVC. Made from the same raw material as UPVC, but an additional process called "orientation" is required as well. In this step, the pipe is stretched while under carefully controlled conditions. This changes the interior structure of material, so that the molecules are arranged in the material in a more orderly fashion.This modification gives the OPVC pipes a higher impact strength than are found in UPVC pipes, and the capacity to take more impact pressure for pipes of the same size and thickness. They are also apart from being strong, light.In short, UPVC is just a standard rigid pipe and an improved version of OPVC which has been reworked to become stronger and better.UPVC being more popular and readily available is used more widely, whilst OPVC can be used in cases where the concerns of durability and high pressure over time is not an issue of the project.

Does pvc-o pipe also need formula ?

Yes, PVC-O pipe does need a formula. Stretching the pipe during the production process is not the only factor; there's a lot to consider when it comes to the raw material mix and the performance types the pipe will offer.In a nutshell, the combination of base PVC resin and some additives. These pvc pipe machine will include stabilizers (to withstand high temperatures during processing), lubricants (to ensure that the material flows easily) and may also include impact modifiers. It may be different based on the equipment that's being used as well as the pressure level you desire in the pipe.But PVC-O compounds can be easier to handle than PVC-U pipes or even so. This is the reason why the orientation process (which works the pipe out slowly) has already helped to strengthen it and elevate its toughness, thus emphasizing the use of lesser heavy additives. The stretching optimizes the molecular structure that's the source of PVC-O's high performing qualities.The most common scenario in the real factory world is that most manufacturers start their formulation process from the basic PVC-U.Most manufacturers in the real factory context initiate their formulation process with a basic PVC-U formulation and make adjustments through testing. For example, if they find the pipe breaks when they are rotating them, they may increase the amount of stabiliser or reduce some of the additives to enhance flexibility when they are being rotated.Yes, there needs to be a formula but it needs to be balanced and appropriate for the orientation, it doesn't necessarily need to be strong from the get go.

What is the machine list of opvc-pipe production line ?

A complete O-PVC (PVC-O) pipe production line is actually a series of normal PVC pipe extrusion machine + orientation (stretching) machine. If you've ever seen a normal PVC pipe line, a bit more than 70% of the machines are the same and then a few more are added to the stretching process.Here is the usual list of Machines – its mechanics with real world explanation:Firstly the mixing system. Hot and Cold Mixers are included. Its purpose is to thoroughly incorporate PVC resin and silicon stabilizers and lubricants into the line evenly. Following unto it the feeding unit and extruder. A twin-screw extruder is mostly adopted by the majority of factories. This is the heart of the line: It melts the line and propels the line forward. The following is a pipe die head (mould). This has the effect of shaping the melted PVC into a pipe and regulates the thickness of the wall and diameter of the pipe. You will also have the vacuum calibration tank. This machine can make the pipe round and round the correct size and slightly reduces the temperature of the pipe. Maintaining stability of the pipe is very important. The water cooling tank or spray cooling system are used to fully cool the pipe to solid form, which follows. The haul-off (puller) machine is the next. It drags the pipe along at a constant speed thus maintaining the shape. The key difference of O-PVC is the orientation (stretching) unit. In this part the pipe is again heated and stretched (usually uniaxially). This step provides O-PVC with a high strength and toughness. There will also typically be a cooling and sizing operation again following the stretching operation to set the new structure.It's time to get to the cutting machine, which may be a saw or planetary cutter to cut pipes to length. Finally, the results using the stacker/unloading table. air compressorwater chillercontrol cabinetprinter for pipe marking In short, the full line looks like this flow: Mixing → Extrusion → Mould → Vacuum sizing → Cooling → Haul-off → Orientation → Cooling → Cutting → Stacking