Use and Applications of Non-woven fabrics in Medicine and Health
Non-woven fabrics widely in the medical field and in protection against biological agents in other sectors. For example, they can be designed to offer critical security properties, such as protection against infection and disease. With multiple drugs, resistant strains, bacteria, and viruses, non-tissues can help fight cross-contamination. The spread of infections in a medical or surgical setting since used only once in incinerated after use needs to manipulate them. The spread of pollutants is minimized.
Design of Nonwoven Fabrics:
Nonwovens are also an important component in the “Smart” design of wound care products. They provide functions such as creating a moist wound healing environment, controlling vapor transmission, absorption, and adherence to the skin. Innovations in non-woven fabrics include designing new scaffolds for 3D biological tissue engineering, implantable fabrics that can reinforce natural tissues, and filter media for non-woven nanofibers offering better particle capture properties. Fabrics with enhancement finishes, including virus, bacteria-proof repellent liquid, and barrier properties, have also been developed for applications such as face masks, gowns, and curtains.
Some examples where surgical nonwovens are used: disposable plugs, gowns, masks, shoe covers, curtain covers, blankets, and packages of sponges, gauze, and linen cloths. In beds, lab clothes, isolation gowns, transdermal drug delivery layers. Also, in fixation tape liners, incubators, sterilization, mattresses (CSR wrapper), hot/cold wound care, drug delivery packages (patches, etc.)
The advantages of using non-woven fabrics are protection against dry or wet contact with airborne particles. These have a strong but optimal design moldable by their weight. It has absorption and, at the same time, promotes air exchange, maintains body heat, and is a barrier against moisture. It has not only excellent breathability properties but also excellent uniformity as well as abrasion resistance.
There is a wide range of different levels of protection, with or without reinforcement, managing a varied platform of raw materials such as:
Non-woven fabric composed of 3 layers joined by a thermal process. Its 2 external layers (Spunbond) give the material mechanical resistance and malleability. Its inner layer (Meltblown), made up of a dense agglomerate of microfibers, is an excellent barrier against polluting agents. The combination of specific properties of its three layers provides an effective bacteriological barrier. The SMS has these principle characters- atoxic, hypoallergenic, and hemorepellant products.
Microfibers create a fibrous layer of interstices that balance through their open weft the required permeability to the entry of sterilizing vapors and their controlled output to achieve levels of filtration efficiency of more than 90% for three macroparticles.
The latest generation in the segment of non-woven fabrics of the SMS type. It is a multilayer combination of spun-bonded polypropylene (SS), melt-blown (MM), and spun-bonded polypropylene (S).
It is a product of the SMS family. That’s with an increase in its filtering capacity in two of its three basic layers. The melt-blown is a layer of wonderful filaments, cut and blown at a high temperature on the spun-bonded, without a certain orientation, and then bonded with the rest of the layers. It can be differentiated from spun-bonded when looking at it with a magnifying glass since it is possible to see the fibers that, in different ways, are inside the fabric.
The double melt-blown barrier in composite fabrics (SSMMS) provides greater capacity for bacterial filtration efficiency (EFB) and, at the same time, provides greater resistance to fluids and abrasion. Considering that to a greater extent, non-woven fabric for medical products has the barrier function as a primary consideration, it is logical to examine this attribute in some detail.
The basic reason is the design and use of operating room fabrics used to be the protection of the patient and the health work from contamination by the environment, as well as the preservation of the sterility of the instruments used in invasive procedures. . With the presence of AIDS and Hepatitis, the need to protect healthcare workers from contamination by blood and body fluids of patients has risen. This obliges employees to provide adequate protection for all potentially exposed workers against contamination by possibly infectious fluids.
It allows the same resistance in any direction. Thanks to this property and the possibility of being able to manufacture in different materials. These are viscose, polyester, cotton, polyamides, and microfiber. The two possible finishes: smooth or perforated and the multitude of the plain. And among others, the spunlace is the indication for single-use medical-sanitary applications.
The spunlace is a non-woven fabric. Its origin is from entangling a loose fiber fabric through multiple rows of jets or high-pressure water jets that pierce the fabric and tangle its fibers. At NV Evolutia, we offer two types: spunlace cross lapper and parallel spunlace. There are several terms to designate spunlace or spunlaced nonwoven, such as tangled jet, hydroentangled, or hydraulic needled. Still, the term spunlace is the most popular in the nonwoven industry.
Interweaving two tissues in different directions give it its isotropic property, allowing it the same resistance in any direction. Specialist indicates the spunlace for industrial, medical-sanitary, hygiene, and beauty uses.
PROPERTIES: Resistance and absorption. Weight min 40 g / m₂, max 180 g / m₂; not allergic or irritating.
FINISHES: There are differences in grammages and compositions: viscose, polyester, cotton, polyamide, and microfiber. It’s possible to manufacture in smooth or perforated and in multiple colors.