? The raw materials of medical non-woven fabrics are polyester and viscose fibers, which belong to chemical fibers. Polyester is a synthetic fiber in chemical fiber, which is polymerized from monomers extracted from petroleum, while viscose fiber is an artificial fiber in chemical fiber and belongs to regenerated cellulose fiber. It is made of natural wood, reed, cotton linter and other cellulose by chemical processing, which can be divided into filament and short fiber. Filament is also called rayon or viscose fiber; Short fibers include cotton (also called artificial cotton), wool (also called artificial wool) and medium-long fibers.
? Medical nonwovens are different from ordinary nonwovens and composite nonwovens. Ordinary non-woven fabrics have no antibacterial properties; Composite non-woven fabrics have good waterproof effect but poor air permeability, and are generally used in surgical gowns and sheets. Medical nonwovens are made by spunbonding, meltblowing and spunbonding (SMS) processes. They are antibacterial, hydrophobic, breathable and lint-free. They are used in the final packaging of sterile goods and can be used once without cleaning.
Although medical non-woven fabric does not belong to medical devices, its existence is related to the sterilization quality of medical devices. As a packaging material, the quality and packaging method of medical non-woven fabrics are very important to ensure the sterility level. The purpose of packaging sterile articles is to keep medical devices in a sterile state during the storage period before use, so sterile packaging materials are required to have good sterilization effect and bacteria isolation function.