Non-woven fabric is an upstream product of the mask industry. Without non-woven fabric, mask machines cannot function. Even skilled operators need at least two to three months to debug from the new machine to production.
If a malfunction occurs, in addition to the loss of material costs and heating and electricity costs, there are also worker downtime costs and capital turnover losses, and the missed golden production time can cause losses. After the meltblown non-woven fabric equipment fails, the first thing to do is to contact a professional maintenance team for timely processing. Time is money, and the shorter time to find a professional maintenance team, the lower the loss.
The meltblown non-woven fabric is different from traditional spunbond production. It uses high-speed hot airflow to stretch the polymer melt sprayed from the nozzle hole of the mold to become an ultra-fine short fiber, which is guided to the cooling roller and shaped by its own adhesive force.
Its production process is a continuous process, from loading and unloading of polymer materials, to melting and extrusion of materials, measuring with a metering pump, spraying with a special nozzle mold, and using high-speed hot air flow to reasonably stretch and guide the polymer melt sprayed from the nozzle, cooled and shaped on the roller, and received and processed by the lower end materials, all in one go. Any link problem may cause production interruption, and the problem should be discovered and solved in a timely manner.
The meltblown non-woven fabric production line includes many single equipment, such as the material loading machine for loading polymer materials, screw extruder, metering pump device, nozzle mold, heating system, air compressor and cooling system, receiving and winding device.
These devices work independently, and are commanded by PLC and industrial control computer to form a synchronous and tension control system. The use of inverters controls extrusion and transmission, collection, and temperature control system controls heating. Inverters also control fans and cooling. Some mechanical problems are easy to find and solve, such as a damaged transmission roller bearing, which will emit abnormal noise and can be easily replaced with suitable accessories. Or the speed reducer of the screw is broken, which will obviously cause speed fluctuation and emit a loud noise at the same time.
However, electrical problems are relatively hidden if there is a malfunction. For example, if a PLC contact point is broken, it will cause abnormal linkage. If a certain drive optocoupler of the inverter is abnormal, it will cause severe current fluctuation of the motor or even phase loss and stop. If the parameters of the winding tension control are not matched properly, it will cause uneven winding. Or if a certain line leaks electricity, it will cause the entire production line to trip and fail to start.
The touch screen is pressed too hard, or dust and grease run onto the wire head inside, causing poor contact or aging of the touch panel, causing pressure insensitivity or failure, which needs to be dealt with in a timely manner.
PLC generally does not break down frequently, but it does not mean that it will not break down. Generally, it burns contact points and power supplies more often, and solving the problem is relatively simple and fast. If the program is lost or the main board is faulty, it will cause the entire production line to be paralyzed and requires professional companies to help solve the problem in a timely manner.
The inverter and tension control system use relatively large power on this type of equipment. If the on-site cutting and dust removal are not taken into account, it is also easy to stop due to high temperature and static electricity during the production process.