The difference between non-woven fabric and ordinary cotton in medical packaging materials

The common medical packaging materials at this stage are medical non-woven fabrics and ordinary cotton fabrics, but there are certain differences between the two materials. Non-woven fabrics and ordinary cotton cotton fabrics are woven fabrics made of cotton yarns. The pore size is about 40-50 µm. After repeated washing, the yarn spacing is easy to increase, resulting in sparse cloth holes, and even small holes that are not easily detectable by the naked eye. Holes, and the size of bacteria or microorganisms is generally 0.5-5μm, it is easier to pass through the cotton cloth and cause the failure of bacteria blocking. The medical non-woven fabric is a non-woven fabric with an equivalent pore diameter of less than 50 µm through the countless short fibers of the microbial barrier layer (melt blown layer) interlaced randomly. The curved channels formed in this way can effectively hinder the passage of microorganisms. Form an effective microbial barrier. From the characteristics point of view: the characteristics of cotton cloth are 1) good moisture absorption and air permeability, comfortable to wear; (2) soft hand, soft luster, and rustic; (3) good warmth retention and excellent wearing performance; (4) dyeability Good, bright color, complete chromatogram, but the color fastness is not good enough; (5) Alkali and acid resistance, the concentrated alkali treatment can make the fiber section of the fabric round, thereby improving the luster of the fabric, that is, mercerizing effect (6) Light resistance Good, but long-term exposure will cause fading and strength reduction; (7) The elasticity is poor, it is easy to produce wrinkles and the creases are not easy to recover. Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips and short fibers Or filaments make the fibers into a net through airflow or machinery, and then undergo hydroentangling, needle punching, or hot rolling reinforcement, and finally after finishing to form a non-woven fabric. A new type of fiber product with soft, breathable and flat structure. The advantage is that it does not produce fiber debris, is strong, durable, and silky soft. It is also a kind of reinforcing material, and it has a cotton feel. Compared with cotton, non-woven The cloth bag is easy to form and cheap to manufacture.