As an energy-saving insulation material, uPVC Profile has inherent advantages. Non-metallic materials have poor heat transfer capacity, which promotes the low heat transfer coefficient of plastic steel profiles. It is very easy to achieve low thermal conductivity when making windows and doors. It is an ideal energy-saving insulation material. Jinan plastic steel profile manufacturer-Jinan Lumei Company shares with you the production and processing technology of plastic steel profile.
Due to the application of plastic steel profiles with low thermal conductivity, plastic steel windows have significant cost advantages when achieving high practical effects of environmental protection and energy saving. In Northeast China and other places, the weather is very cold in order to better environmental protection and energy saving effect, the proportion of plastic steel windows is very large, and the market share of plastic steel windows is very high. The window is equipped with more than 70 inner cavity aluminum profiles, with three glass and two hollow LOWE laminated glass, and three sealing system software. The thermal conductivity of the whole window is very easy to guarantee 1.5W/m²·K, even if it is guaranteed to be in a passive window of 0.8W/ The m²·K value is also relatively easy. Because plastic steel windows can achieve high environmental protection and energy saving characteristics at relatively low cost, plastic steel windows still occupy a certain sales market.
How is uPVC Profile manufactured? The production of plastic steel profiles goes through the whole process of seasoning, wrong material, extrusion, refrigeration and shaping, traction belt laser cutting, testing, and packaging.
uPVC Profile is a hard polyethylene polymer material plastic that is the first to undergo the entire seasoning process. After the R&D department has clarified the secret recipe, this work is carried out by the seasoning process. The seasoning process has an automated production line, which is also carried out by manpower. The composition of the secret recipe is composed of more than ten kinds of raw materials such as PVC, halogen-free flame retardants, fillers, lubricating fluids, processing aids, light stabilizers, and color pastes. There are special regulations for each raw material and cannot be abused.
Polyethylene wax is a common raw material. There are two types of polyethylene wax: rutile type and anatase type. If you want to use rutile type, you cannot use anatase type. Anatase type is cheap, but it is manufactured. Aluminum profiles are very prone to black in June. The secret formula must be applied with non-halogen flame retardants without heavy metals due to environmental protection regulations to achieve green and environmental protection and good health regulations.
In the wrong material link, various raw materials that have undergone measurement and verification according to their proportions are added to the mixer in a certain order. Pay attention to the order of feeding. The order of feeding harms the quality of the mixture. The field of overseas plastic steel profiles is relatively complete, and there are professional companies that produce mixed materials. Most of these aspects in China are all-process manufacturing, and there are no companies that specialize in selling mixed materials in the sales market. The feeding order of each raw material endangers the quality. The time, temperature, and speed ratio of the mixing machine in the mixer will all endanger the quality of the mixture. If an enterprise has insufficient technical energy, the essential quality of the product cannot be reasonably ensured.
The mixed material undergoes the extrusion production line to form the product. Extruder is an important production line equipment. There are many types of extruders: single screw extruder and single screw; in the types of twin single screw extruders, they are divided into conical single screw and parallel surface single screw. . Choose suitable single-screw extruders according to different regulations. The basic principle of a single-screw extruder is to use external heating and the shear stress of the extruder screw on the raw material to melt the pellets of polyethylene and PVC into a molten state.
Aluminum profile extruder is a common machine equipment in industrial production. The cables you usually see have also been extruded and processed. The core component of the extruder, the extruder screw can be seen on many machines and equipment. Extruder screws can be seen in machines and equipment such as dough presses and plastic machines. The key of the extruder is composed of extruder screw, motor, automatic control system, vacuum equipment and so on. The processing accuracy of the extruder is an important performance index.
The completely melted polyethylene raw material undergoes the mold to produce the necessary shape, and then enters the vacuum pump shaping mold, and undergoes the cooling of the cooling circulating water to produce the necessary shape. According to the tensile force of the optical cable tractor, the aluminum profile is continuously pulled out from the material tube, and then reaches the fixed-length laser cutting process, and is broken into a certain length of aluminum profile, which is generally 6 meters in length. After heating, the mold pays attention to tightening the high-strength bolts.
The extrusion speed of the aluminum profile in the setting die is consistent. It cannot be too fast or very slow. Too fast and very easy to make the thickness of the aluminum profile too thin, and the product quality is harmed; it is very slow because it cannot be immediately removed from the tube When the outgoing materials are pushed away, the raw materials will accumulate in the material pipe, resulting in a safety accident of mold blockage, resulting in shutdown.
The raw material traction belt speed, temperature, and vacuum value of the refrigeration shaping process are important production parameters. The temperature of the cooling circulating water for aluminum profiles must be ensured. If the temperature of the cooling circulating water cannot be ensured, all normal production and manufacturing cannot be performed, and various problems will occur in the product. Especially in the summer, if the raw materials that go out of the material pipe at a temperature of 200 degrees or less during the summer production can not be fully refrigerated immediately, even all normal production and manufacturing can not be guaranteed, let alone continue to cause the internal power of the raw materials to harm the product quality.
In order to better control the temperature, manufacturers have equipped with refrigeration units, refrigeration reservoirs, closed cooling towers and other machinery and equipment to ensure that they can produce up-to-standard products. Aluminium profiles can only be delivered after a stable period of at least 24 hours after they come out of the manufacturing process. The aluminum profiles coming out of the production line are not completely refrigerated, and the specifications also have a certain amount of change.