Views:211 Author:Site Editor Publish Time: 2020-11-08 Origin:Site
In 2020, our lives will be shrouded in masks. Walking on the streets with few people, all kinds of masks are particularly conspicuous, such as medical masks, disposable masks, N95 masks, and those homemade masks.
Because medical surgical masks have stronger protection, they are generally used in high-demand environments such as medical clinics, laboratories, and operating rooms, which are worn by medical staff for their work. The safety factor is relatively high, and the resistance to bacteria and viruses is strong. Medical surgical masks can also be used to prevent flu.
But do you know the characteristics of various mask materials? Do you still stay at the stage of non-woven fabric for the cognition of mask materials. As a surgical mask supplier, understanding the characteristics of mask materials will help you build a professional image among consumers. In this article, I will mainly discuss the characteristics of medical masks.
Surgical masks are designed to keep operating rooms sterile, preventing germs from the mouth and nose of a wearer from contaminating a patient during surgery. Although they have seen a rise in popularity among consumers during outbreaks such as the coronavirus, surgical masks are not designed to filter out viruses, which are smaller than germs.
Surgical face masks are made with needle punched non woven fabric, which has better bacteria filtration and air permeability while remaining less slippery than woven cloth. The material of non woven polypropylene geotextile fabric most commonly used to make them is polypropylene, either 20 or 25 grams per square meter (gsm) in density. Masks can also be made of polystyrene, polycarbonate, polyethylene, or polyester.
20 gsm mask material is made in a spunbond process, which involves extruding the melted plastic onto a conveyor. The material is extruded in a web, in which strands bond with each other as they cool. 25 gsm fabric is made through meltblown technology, which is a similar process where plastic is extruded through a die with hundreds of small nozzles and blown by hot air to become tiny fibers, again cooling and binding on a conveyor. These fibers are less than a micron in diameter.
Surgical masks are made up of a multi-layered structure, generally by covering a layer of textile with non-woven bonded fabric on both sides. Non-wovens, which are cheaper to make and cleaner thanks to their disposable nature, are made with three or four layers. These disposable masks are often made with two filter layers effective at filtering out particles such as bacteria above 1 micron. The filtration level of a mask, however, depends on the fiber, the way it’s manufactured, the web’s structure, and the fiber’s cross-sectional shape. Masks are made on a machine line that assembles the nonwovens from bobbins, ultrasonically welds the layers together, and stamps the masks with nose strips, ear loops, and other pieces.