Melt blowing is a conventional fabrication method of micro- and nanofibers where a polymer melt is extruded through small nozzles surrounded by high speed blowing gas. The randomly deposited fibers form a nonwoven sheet product applicable for filtration, sorbents, apparels and drug delivery systems. The substantial benefits of melt blowing are simplicity, high specific productivity and solvent-free operation. Choosing an appropriate combination of polymers with optimized rheological and surface properties, scientists have been able to produce melt-blown fibers with an average diameter of down to 36 nm.
The meltblown process is, in many ways, a phenomenon. The variables of the meltblown process are complex because of the many parameters and interrelationships between variables. The quality of the equipment, the selection of the polymer, and the parameter settings all contribute to the quality of the end product. This paper discusses a general trending of these variables. The trends were found to be nonlinear with the exception of two, Bresee and Qureshi (2004) and Lee and Wadsworth (1990). Bresee and Qureshi stated the effect of DCD on pore structure was linear and Lee and Wadsworth stated the effect of DCD on air permeability was also linear. While there has been considerable research conducted on the meltblown process, there are several variables which should be studied further.
PP Spun Bond Nonwoven Fabric
PP Spun bond non-woven fabrics is one of types of spunbond polypropylene fabric. They are mainly used for outer and inner materials of surgical and hyginene face mask. Because of its softness, environmental protection and practicability. It is often used to make surgical masks, medical cloth, round caps, and various protective face masks, household face masks. It is also used in other medical and health industry and back fabric of other non-woven fabrics.
The non-woven face masks are used to prevent the spread of influenza in spring and seasonal pollen allergies. It brings great convenience to family life and increases people’s comfort in life.