Melt blown nonwoven fabric, is the key material for the mask to bring virus filtration effect. In addition to blocking larger dust particles, electrostatic ultrafine fibers of it can trap fine dust, bacteria and viruses through the electrostatic charge on the surface.
Medical masks generally have multi-layer structure, abbreviated as SMS structure, that is, a single spunbonded layer (S) is used on the inside and outside, and a single or multi-layer melt-blown layer (M) is used in the middle. The melt blown nonwoven fabric is the best material for the melt-blown layer.
Melt blown nonwoven fabric is a kind of nonwoven cloth. Nonwoven cloth, also known as nonwoven fabric, is composed of directional or random fibers, without longitudes and weft, which is known for its appearance and certain properties similar to textile fabric.
There are many kinds of nonwoven processes, such as spunbonding, melt-blowing, hot rolling, hydroentangling, etc. The nonwoven cloth produced by melt-blowing is called melt blown nonwoven fabric. The melt-blowing method is a spinning method in which the extruded polymer melt is rapidly stretched and solidified with the help of high-speed hot air flow. The nonwoven produced by melt-blowing has finer fiber, larger surface area, better filtration performance, shielding property, thermal insulation and oil absorption, which cannot be matched by nonwovens produced by other processes.
There are few large domestic manufacturers capable of producing melt blown nonwoven fabric. The industry as a whole presents a small and scattered situation, and had been slow to grow after a long period of lack of attention.
Although it has a clear production principle, melt blown nonwoven fabric has a relatively complex actual production process, involving polymer science, fluid mechanics, airflow, spinning and other disciplines, and also has a high requirement for equipment manufacturing. For the production of melt blown nonwoven fabric, the key is to obtain a complete set of melt blown nonwoven fabric production equipment.
In China, the melt-blown production equipment has been localized, but compared with foreign manufacturers, domestic manufacturers still have a big gap in the production of core components such as spinneret plate, spinneret, etc., so these core components are mostly dependent on the supply of foreign manufacturers.
The relatively long equipment supply cycle, relatively high investment threshold and the uncertainty of market duration lead to many people have no confidence in the production of melt blown nonwoven fabric. In addition, melt blown nonwoven fabric has a wide range of applications. In addition to being used in the production of medical and industrial masks, it can also be used in many fields, such as thermal insulation materials, filtration materials, medical and health materials, oil-absorbing materials, wipes, battery separators and even sound insulation materials. Therefore, the melt blown nonwoven fabric market has become the seller’s market, and there is a serious shortage of supply.
In order to get a ton of melt blown nonwoven fabric, many mask factory owners have to rush to find the source of goods every day. After finding the source of goods, they dare not relax their vigilance and keep an eye on their goods at the workshop of the supplier, so as not to lose the source of goods to others.