How to distinguish spunbond, melt blown, and SMS non-woven fabrics by nonwoven fabric machine in Mexico?

The medical mask is composed of three layers of nonwoven fabric.  The middle layer is meltblown nonwoven fabric. The top and rear layers are spunbond non-woven fabrics. They have different functions in resisting viruses. What is the difference between spunbond non-woven fabric and melt blown non-woven fabric?

I.What is spunbond nonwoven fabric?

Spunbond non-woven fabric by nonwoven fabric machine is made by continuously spinning fibers. Polymer extrusion and stretching form filaments. These filaments are laid in a net. Then, during thermal, chemical, or mechanical treatment, the mesh itself will bond. Through reinforcement, the net becomes non-woven. The applications of spunbonded non-woven fabrics include non-woven bags, lining fabrics, health work clothes, masks, and filters. It is becoming increasingly popular in the healthcare and healthcare industries.

The raw materials for producing anti stick non-woven fabrics include PP (polypropylene), Pet (polyester), nylon, and PE (polyethylene). The most commonly used is PP, which has stability, heat resistance, aging resistance, and breathability.

II.What is melt blown nonwoven fabric?

The process of melt blowing is to convert polymer fragments into mesh fabrics. Commonly used raw materials are PP and PE. After being squeezed, filtered, and pumped, hot air blows the fibers from the melt blown mold to form a finer, tangled fiber network. This simple processing method gives it a significant cost advantage over other systems.

III.What is SMS nonwoven fabric?

SMS non-woven fabric produced by SMS nonwoven machineis a three-layer structure composed of spunbond, melt blown, and spunbond. Its structure is the same as a sandwich. The top layer is spunbonded non-woven fabric. The middle layer is melt blown. Then the bottom layer is spunbonded again.

Ⅳ.The difference between spunbond, melt blown, and SMS non-woven fabrics

①.Production process:

The production process of spunbond non-woven fabric from non woven machine is very simple. All programs are completed on the non-woven fabric production line. Form a net of filaments. Then they produce the net into non-woven fabric through their own methods (bonding, thermal bonding, chemical bonding, or mechanical reinforcement).

The manufacturing process of melt blown is shorter than that of spunbonded. In the spinning box, the spinning mold ejects the fibers. The hot high-pressure air blows the fibers into thin and long fibers. Melt blown non-woven fabric is formed by rolling and hot rolling.

SMS nonwoven fabric by SMS nonwoven machine can be produced in both spunbond and melt blown methods. The spunbond method and melt blown method work independently in front of the rolling mill. Then, they are integrated into a three-layer fiber, namely SMS non-woven fabric.

②.Characteristic

Spunbond nonwoven fabric has the characteristics of moisture resistance, breathability, flexibility, light weight, and non combustion. At the same time, they are non-toxic, non irritating, environmentally friendly, and recyclable. And it has rich colors and low prices.
The weight of melt blown nonwoven fabric is very light, three-fifths that of cotton. Its touch is soft and comfortable. Melt blown fabrics have the characteristics of being waterproof, breathable, and non absorbent. Melt blown cloth has good filtration performance, which is required for medical masks.

SMS nonwoven fabric from SMS nonwoven machine has great advantages in water repellency. Spunbond non-woven fabrics have durability and strength characteristics under wet or dry conditions, such as wear resistance, rupture resistance, and almost no absorption of any moisture. The inner layer of meltblown fabric gives a soft touch and is also waterproof.

③.Application

Spunbond nonwoven fabrics are mainly used for medical materials, agricultural covers, household textiles, packaging materials, shopping bags, etc. It usually depends on the weight of the nonwoven fabric.

Melt blown nonwoven fabric is the core material for masks and filter materials. Materials with good liquid filtration, insulation, absorption, insulation, oil absorption, and wiping properties

SMS nonwoven fabrics produced by SMS nonwoven machine have a huge market. The final product usually varies depending on its thickness.
Thin SMMS products perform well in terms of waterproofing and breathability. They are particularly suitable for the hygiene product market, such as sanitary napkins, sanitary pads, baby diapers, etc.

Medium thickness SMS products from SMS nonwoven machine are suitable for use in medical products. They include surgical gowns, surgical bags, surgical cloths, and sterile bandages. After alcohol, anti blood, anti oil, and anti static treatment, this non-woven fabric becomes an ideal material for high-quality medical protective equipment. This type of cloth can also be used for work clothes and protective clothing.

Thick SMS products are widely used as efficient filtration materials for various gases and liquids. At the same time, they are also efficient oil absorbing materials. They are used for industrial wastewater degreasing, offshore oil cleaning, and industrial cleaning.