How to distinguish meltblown fabric and non-woven fabric for masks?

1. Introduction

The new crown epidemic, the demand for masks can be said to show an unprecedented substantial growth, many people began to pay attention to the mask, for its material, structure, performance, level, etc. We are more concerned than ever before, so many of the “mask” knowledge we have not been exposed to before are also rapidly popularized,

do not understand do not know, understand the original seemingly simple a “mask” also hidden so many knowledge and details, such as this period was repeatedly mentioned “meltblown cloth” and “non-woven fabric”,

many partners are very headache the difference between the two and the application.How to distinguish meltblown fabric and non-woven fabric for masks?

Meltblown cloth generally refers to the middle layer of the mask, which is also the most core layer of the mask, mainly made of polypropylene high melt finger 1500 meltblown PP as the main raw material,

and the fiber diameter can reach 1 to 5 microns.

With more voids, fluffy structure and good wrinkle resistance, these ultra-fine fibers with unique capillary structure increase the number of fibers per unit area and surface area,

thus making the meltblown cloth have good filtering, shielding, adiabatic and oil absorption properties.

It can be used in the fields of air and liquid filtration materials, isolation materials, absorbent materials, mask materials, warming materials, oil absorbent materials and wiping cloths.

Mouthpiece meltblown fabric uses high speed hot air flow to draw the fine stream of polymer melt extruded from the spinneret hole of the die,

thus forming ultra-fine fibers and collecting them on the condensed mesh curtain or drum, while bonding itself to become meltblown nonwoven fabric. The appearance of meltblown fabric is white, flat and soft,

and the material fiber fineness is 0.5-1.0um.

The random distribution of fibers provides more opportunities for thermal bonding between fibers, thus making the meltblown gas filtration material have a larger specific surface area and higher void ratio (≥75%).

After high pressure electret filtration efficiency, the product has the characteristics of low resistance, high efficiency and high dust capacity.

Nonwoven fabrics are generally applied to the skin-friendly layer on the surface and inner surface of the mask,

and are called cloth because they have the appearance of cloth and certain product properties.

Mostly polypropylene granules are used as raw materials. It is moisture-proof, breathable, flexible, light and non-combustible.

Easy to decompose, non-toxic and non-irritating, colorful and inexpensive. It can be recycled and so on. Non-woven fabric has no warp and weft lines,

so it is very convenient to cut and sew. And it is light and easy to shape, so it is loved by craft lovers.

2. The main differences are the following 3 points.

1、Difference between nonwoven fabric and meltblown fabric raw materials

Nonwoven fabric: mostly use polypropylene granules as raw material.

Meltblown fabric: mainly use polypropylene as raw material.

2、Difference between the advantages and characteristics of nonwoven fabric and meltblown fabric

Non-woven fabric: moisture-proof, breathable, flexible, lightweight, non-combustible. Easy to decompose, non-toxic and non-irritating, rich in color and low price. Can be recycled and so on.

Meltblown fabric: more voids, fluffy structure, good crease resistance. Therefore, it has good filtering property. Therefore has good filtering property.

3、Difference between structure and application of nonwoven fabric and meltblown fabric

Non-woven fabric: no warp and weft lines, very convenient for cutting and sewing, and light and easy to shape, popular among handicraft lovers.

Meltblown fabric: It can be used in the fields of air and liquid filtration materials, isolation materials, absorbent materials, mask materials,

warm materials, as well as oil-absorbent materials and wiping cloths.

Meltblown cloth is the most core material for masks. Medical masks and N95 masks are composed of spunbond layer, meltblown layer and spunbond layer, among which, spunbond layer and meltblown layer are composed of polypropylene PP material.

3., non-woven and meltblown cloth mask which is good

It is recommended to use meltblown fabric masks.

Medical masks generally use a multi-layer structure structure, referred to as SMS structure: a single spunbond layer (S) on both sides,

and a single or multi-layer meltblown layer (M) in the middle, and the best material for the meltblown layer is meltblown cloth.

The main material that brings virus filtration to the mask is the middle M layer – meltblown nonwoven fabric.

The meltblown cloth is made of a polypropylene material called high melt finger fibers,

which is an ultra-fine electrostatic fiber cloth that can effectively use static electricity to absorb virus dust and droplets, which is an important reason why the mask can filter viruses. (

If you do not know whether your mask can prevent viruses, look at the mask whether there is meltblown cloth)

In fact, these three layers are all non-woven fabrics, the raw material is polypropylene, but the production process is not the same. Among them,

the inside and outside of the spunbond layer fiber diameter is thicker, in about 20 microns; the middle of the meltblown layer fiber diameter of only 2 microns,

by a polypropylene material called high melt finger fibers made of meltblown cloth is more fragile,

can not be washed with water, nor alcohol spray, even if it is wet and then dried, it will destroy the fiber, causing loopholes, the virus will also pass through the loopholes, the mask will lose the ability to protect.

4. disposable masks antivirus effect

The effect of disposable masks against viruses is not good, it is not possible to make a generalization, it depends on what kind of disposable masks are available,

not all disposable masks can prevent viruses. Only medical disposable masks purchased through regular channels and in accordance with national standards can play an effective role in blocking viruses, such as disposable medical surgical masks and medical protective masks;

disposable medical surgical masks worn by ordinary people in life can stop the cross transmission of viruses;

and medical protective masks are the highest level of protection, such as N95, N99 masks and other professional masks should be reserved for Front-line medical personnel. In fact,

both disposable medical surgical masks and protective masks need to be replaced regularly and should not be worn for too long,

otherwise it is not only detrimental to anti-virus, but also easy to increase the chances of infection with viruses.