Mask Melt-blown Cloth Spinneret Die Mould 1. overview and principle of meltblown cloth equipment the melt-blown method is a method for preparing fibers by blowing polymer melts with high-temperature and high-speed airflow to rapidly draw them. (melt-blown cloth extruder, melt-blown cloth equipment, melt-blown cloth production line) after the polymer chips are heated and pressed into a molten state by a screw extruder, they reach the spinneret hole at the front end of the nozzle through the melt distribution flow path, and after extrusion, they are refined by two converging high-speed and high-temperature air flows to refine . the refined fibers are cooled and solidified on the screen device to form a melt-blown nonwoven fabric. 2. components of meltblown cloth equipment meltblown heads, automatic charging system equipment components, ultrasonic cleaning machines, air heaters, centrifugal fans, screw extruders, meltblown web forming machines, meltblown offline winding machines, meltblown offline slitting machines and other key equipment. 3. the core components of meltblown cloth equipment spinneret the spinneret for melt spinning is a representative spinneret for the manufacture of synthetic fibers such as polyester and nylon. the thermoplastic resin is heated and melted, extruded through the spinneret in air or water at a certain speed, and cooled spinning method of solidifying into fibers the most core technology is the small nozzle on the spinneret. this nozzle not only has a small size of only 0.15mm, but also needs to process a complex hole pattern on such a small nozzle. the processing is extremely difficult, and the nozzle processing process requires months. if the processing accuracy is not high, the melt-blown cloth finally produced will not meet the corresponding technical requirements, which will affect the protective performance of the mask. structure of melt-blown cloth spinneret according to the shape of the spinneret, the structure of the spinneret can be divided into three forms: round, sector and rectangle. at present, round and rectangular plates are mostly used at home and abroad. to suit different chemical fiber spinning occasions, the round spinneret is divided into flat type, flange flat type, flat ring, flange ring, etc .: the rectangular spinneret is divided into flange rectangle and flange groove rectangle, etc. , mostly used for spinning short fibers with many holes. meltblown cloth spinneret structure
The long-term practical use proves that SG-28 Silicon Nitride Ceramic is very suitable for low-pressure casting machines and dosing furnaces. Compared with traditional cast iron, silicon carbide, carbon nitrogen materials and Aluminum Titanate, Silicon Nitride Ceramics have the best high-temperature strength and the service life can last for more than one year. The low wettability to aluminum liquid, makes the SG-28 Silicon Nitride Ceramic effectively reduce the slagging on the inner and outer walls of the riser tube, reduce the shutdown loss and maintenance. SG-28 Silicon Nitride Ceramic has excellent corrosion resistance, which can effectively reduce the pollution to the aluminum liquid, and improves casting quality.
Silicon Nitride Heater Protection Tube SG-28 Silicon Nitride Ceramic has become the preferred material for protection tube of electric heater in aluminum processing industry due to its excellent high temperature performance and corrosion resistance. ï?¬Due to its high temperature strength and strong thermal shock resistance, Silicon Nitride Ceramic can withstand the heat load of a high temperature burner, and the corrosion of molten aluminum for a long time, and the service life is more than one year; ï?¬Silicon Nitride Ceramics almost do not react with the aluminum liquid, so it will not pollute the aluminum liquid, which is conductive to improve the purity of aluminum liquid under high temperature. Compared with the traditional upper radiation heating method,the efficiency of immersive heating is 30%-50% higher and the overheated oxidation of the upper molten aluminum can be reduced by 90%.
Handicraft items like metal art ware lamp and accessories.
Ventilator.
Ceramic-zirconia plates.
Ventilators.
Cenospheres.
Wood.
Wood.
Wall decoration products.
Ceramic balls.
Electric hydrofoil surfboard.
Ceramic balls.
Iron artware.
Ceramic balls.
Ceramic Blanket.
Ceramic Plates.
Incense burner.
Ceramic Powder.
