Qingdao Sincere Machinery Co., Ltd

How are three-layer co-extruded PPR pipes produced?

How are three-layer co-extruded PPR pipes produced? Three-layer co-extruded PPR pipes are produced using a specialized machine that feeds and combines three different plastic materials (PPR and possibly glass fiber) through a co-extrusion die. The process involves three single-screw extruders, a co-extrusion die, and a calibration/cooling system.  Here's a more detailed breakdown:1. Material Preparation:Raw PPR materials (possibly with color masterbatches) are fed into three separate single-screw extruders. One extruder might handle the inner and outer PPR layers, while another handles a reinforcement layer like glass fiber.  2. Extrusion and Combination: Each extruder melts and mixes the raw material, then feeds it through a specialized co-extrusion die. This die is designed to ensure uniform distribution and bonding of the three layers.  3. Shape Formation: As the molten material emerges from the die, it forms a continuous tube shape. The material flows through a calibration/sizing device to fix its dimensions and shape.  4. Cooling and Sizing: The pipe is then cooled, typically using a vacuum sizing box and spray cooling tanks, to solidify the layers and maintain the desired pipe shape.  5. Cutting and Finishing: The cooled pipe is cut to the desired length, and the finished ends are cleaned up and inspected

What kinds of plastic pipes are there?

What kinds of plastic pipes are there? While metal pipes were once popular in plumbing, most new plumbing pipes today are plastic due to this material's corrosion resistance. However, not all plastic plumbing pipes are alike, and plumbers now have at least four types of plastic pipes they can use to make plumbing repairs. Each type of plastic pipe has its own unique advantages and disadvantages. Learn about the four most popular plastic plumbing pipes in use today, along with the unique advantages and disadvantages of each pipe type. Plastic pipes include PE, PP, HDPE, ABS, UPVC, CPVC, MPP, PPR, PERT, PA, PU, etc. Acrylonitrile butadiene styrene (ABS) pipes are another modern, plastic plumbing pipe option. While slightly less rigid than PVC pipes, ABS pipes are extremely strong. In addition, water that flows through ABS pipes makes little noise due to the noise-dampening effect of these pipes. ABS pipes are also often quicker to install than PVC pipes, because ABS pipe sections do not need priming as PVC pipe sections do before they are joined together. ABS pipes are resistant to extreme weather conditions, including UV light exposure and cold temperatures. For this reason, ABS pipes are often used in outdoor plumbing applications.

How are PVC particles produced?

How are PVC particles produced? The present invention concerns a procedure for the production of PVC particl es with a narrow size distribution in the range 10-50 .mu.m, preferably 10-30 .mu.m, in which, in a first stage, a vinyl monomer o r a mixture of monomers is polymerised to form a polymer/oligomer seed particle in the range 1-10 .mu.m. In a second stage, another vinyl monomer or mixture of monomers is swelled into the polymer/oligomer seed particles and polymerisation takes place in such a way that they grow into polymer particles of the desired size. It is preferable to use aromatic vinyl monomers or acrylates as the monomer in the seed particle s. The seed particles in the first stage can be produced in a two-stage swelling process or by dispersion polymerisation. A procedure for producing spherical PVC particles in the range 10 to 50 µm, characterised in that the seed particles are produced in a first stage by means of dispersion polymerisation of an aromatic vinyl monomer, acrylates or a mixture of monomers, in which an oil-soluble organic peroxide in used as the polymerisation initiator and that, in a second stage, only the polymerisation medium, stabilisers, vinyl chloride monomer or a mixture of monomers and initiator-activator are dosed and that the polymerisation in the second stage is carried out by swelling the monomer(s) and using residual initiator in the seed particles.

What is a pipe production line?

What is a pipe production line? A pipe production line is a manufacturing system that transforms raw materials into finished pipes, typically through extrusion. It involves a series of sequential operations, from preparing the raw materials to cutting or winding the final product.  A pipe production line is an assembly line for pipe production, which is composed of the control system, extruder, head, shaping cooling system, tractor, planetary cutting device, turnover rack, and other equipment. Our company specializes in manufacturing various plastic pipe extrusion production lines. Including PE and PP pipe production lines, PVC pipe production lines, MPP pipe production lines, PPR pipe production lines, PERT pipe production lines, PA pipe production lines, PU pipe production lines, etc. 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. The raw material is then pulled out by a vacuum pump and moved into a device called the blender. Inside the blender, a barrel heater heats the raw material until it becomes molten (at about 356 degrees Fahrenheit), which makes the material soft enough to feed through a mold. The mold, called a die, shapes the molten material into its final cylindrical form. HDPE pipes are made of food-grade polyethylene virgin material, making it safe for the transfer of potable water. These pipes are used in private and public water supply systems due to their high resistance to corrosion, wear and tear, and chemical exposure