Spunbond-Meltblown-Spunbond(SMS) nonwoven fabrics are made form Polypropylene, There are tri-layer, spunbond + meltblown + spunbond nonwoven.
The technique itself includes fibers being spun and then directly being dispersed into a web by air streams.
There is not any chemical in this process. They are bonded by thermal pressures. This technique is preferred as it is cost-effective for manufacturers.
Spunbond material is often used for filters for air, surgical and medical gown, patient gown, protective clothes, operation cover, shoe cover, disposable hospital sheet and so on.
The technique includes hot air being blown onto molten thermoplastic resin that is extruded through a linear die containing hundreds of small holes, to form a fine fibered self-bonded nonwoven web.
Its key feature is that it is an extremely thin fiber.
This material is often used for filters for wipes, female hygiene, apparel, medical products, patient gown, surgical masks.
When Spunbound and meltblown are layered to form the SMS material the features can be combined together and the range of applications increases.
Additionally, the combination of spunbond and meltblown materials means that the features of each can make up for the weaknesses of the other. For example, meltblowns have limited strength so can be combined with a spunbond to become a strong material, and likewise spunbonds can be elevated with the addition of meltblowns.
These can even be combined to make a material which has a textile feeling to it. SMS has excellent physical properties as well as barrier qualities.
Features include high tensile strength, softness, comfort, breathability, wearability, and is also lightweight. It also acts as a water-repellent, and a barrier against bacteria, blood and other liquids as well as gas/steam perspiration.
Finally, it is also fine enough to serve as a disposable fabric.
Medical SMS Fabric is therefore suitable for medical and hygiene products such as diapers, protective wear, face masks, hospital gowns, wound care, caps, filtration fabrics, and much more.
Although SMS is more expensive than other materials such as non-layered materials, its unique features and specific design make it widely applicable for use. It can not only mimic the appearance, texture and strength of a woven fabric and can be as bulky as the thickest padding, but in combination with other materials also provides a spectrum of products with diverse properties.
With the development of SMS it is thought that it will grow rapidly in the market of nonwovens and become more and more popular for various segments including apparel, geotextiles, furnishings, roofing as well as many others.
Oya Textile Medical Clothing’s range includes hospital gowns, patient gowns, isolation gowns, medical masks which are manufactured using spunbond and meltblown techniques, as well SMS material where extra protection is appropriate, to suit all needs and preferences.
- Thin (Gram <25gsm): sanitary napkins, sanitary pads, baby diapers, preventing side leakage and backing for adult incontinence pants.
- Medium (Gram 25~55gsm):medical-surgical cloth and mask, cover cloth, industrial work clothes, protective clothing.
- Thick (Gram >55gsm): liquid and gas filter materials, industrial wastewater filtering, marine oil pollution clean-up, industrial cloth, high oil absorption materials
Sources: AdvaCare Pharma SMS material manufacturing company. Dongguan hendar cloth co.,LTD