Problems needing attention in design and processing of melt blown cloth mold

Due to the impact of the epidemic, the mask industry has become the most popular industry this year, and also led to the development of upstream meltblown cloth. More and more enterprises enter the melt blown fabric industry. The so-called "every row is like a mountain", the design and processing technology of melt blown cloth mold has become the first mountain in front of us. Then, what problems should be paid attention to in the design and processing of melt blown die head?
1、 When designing the die head, the design of the runner is the most important. The main problem of yellowing and embrittlement of meltblown cloth is the glue hiding in the flow channel. Whether the flow channel of the mold is smooth or not is directly related to the success of the mold production;
2、 The uniformity of air knife is directly related to the uniformity of melt blown cloth;
3、 The assembly mode between the die plates determines whether there will be glue leakage in the die;
4、 In the process of machining, precision machining is needed. In particular, the smoothness of the nozzle should be processed in place;
5、 The PP material of melt blown cloth is different from PET material, so the size of nozzle should be moderate, so don't pursue small hole too much. If the hole diameter is too small, it is easy to plug the mold.
Our company is a professional manufacturer of PP meltblown materials, which can provide raw materials for meltblown cloth to major customers, and also solve the difficulties of meltblown equipment and mold.
Melt blown nonwovens process is to use high-speed hot air to draw the polymer solution stream extruded from the spinneret hole of the die head, so as to form ultra-fine fiber and condense on the roller, which is formed by self bonding. The die head is the most critical part of the melt blown equipment, and the uniformity of the product is closely related to the die head, so the processing accuracy is required to be high. Technical features: 1. Die head processing technology and die treatment technology are years of experience, according to the different characteristics of raw materials (viscosity, temperature, speed) to design the best flow channel, the solution distribution is more uniform. 2. The special hot air flow heating device has good heating efficiency and heat exchange efficiency and low energy consumption. 3. Unique design of air duct structure, stable air pressure, symmetrical air flow on both sides, adjustable air gap. 4. Die design of spinneret is the key, which determines the technology of melt blown equipment. Our die design and precision can ensure that there is no wire drawing, no waste and even melt blown. Technical parameters: 1. The spinneret mold is a precision mold, the hole diameter is 0.2-0.4mm, the center distance of spinneret hole is 0.7-1.0mm, and the spraying polypropylene wire can meet the requirements of medical disposable mask N95. 2. Screw extruder model (45 50 65) custom meltblown die head, 300, 400, 450, 500, 600, 800, 900, 1000 and other different models. 3. The polishing finish of the cavity is 0.01-0.034, which is suitable for the temperature of meltblown process below 350 ℃, carbon fiber 330-350 ℃, PP and pet300 ℃. 5. The mold body is made of sus630, sus431 and other high-quality steel.