Non-woven fabrics, melt-blown fabrics... What are the differences between these materials?

Non-woven fabrics, melt-blown fabrics... What are the differences between these materials?

Melt blown fabric

Melt blown fabric and mask

Melt-blown fabric is the core fabric of medical masks, commonly known as the "heart" of the mask. It is the filter layer in the middle of the mask, which can filter bacteria and prevent the spread of germs. Melt blown fabric mainly uses polypropylene as the main raw material, and the fiber diameter can reach 1-5 microns. With many voids, fluffy structure and good anti-wrinkle ability, these ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, so that the melt-blown fabric has good filtration, shielding, heat insulation and oil absorption. . It can be used in air and liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wiping fabrics and other fields.

Application range

(1) Medical and sanitary cloths: surgical gowns, protective fabricing, disinfection wraps, masks, diapers, women's sanitary napkins, etc.;

(2) Fabric for home decoration: wall coverings, tablecloths, bed sheets, bedspreads, etc.;

(3) Fabric for clothing: lining, fusible interlining, flakes, shaped cotton, various synthetic leather base fabrics, etc.;

(4) Industrial fabric: filter material, insulating material, cement packaging bag, geotextile, covering fabric, etc.;

(5) Agricultural fabric: crop protection fabric, seedling raising fabric, irrigation fabric, thermal insulation curtain, etc.;

(6) Others: space cotton, thermal insulation and sound insulation materials, linoleum, cigarette filters, tea bags, etc.

Main feature

The melt-blown fabric filter material is made of polypropylene superfine fibers randomly distributed and bonded together. The appearance is white, flat and soft. The material fiber fineness is 0.5-1.0 μm. The random distribution of fibers provides more thermal bonding between fibers. Opportunities, so that the melt-blown gas filter material has a larger specific surface area and a higher porosity (≥75%). After high-pressure electret filtration efficiency, the product has the characteristics of low resistance, high efficiency, and high dust holding capacity.

Non-woven fabric

Non-woven fabrics and masks

Non-woven fabrics, also known as non-woven fabrics, are composed of oriented or random fibers. It is called fabric because of its appearance and certain properties.

The mask is a multi-layer composite structure. The N95/KN95 mask is composed of the innermost and outermost non-woven layers, the middle electrostatic layer and the melt-blown non-woven layer. The medical surgical mask is composed of a non-woven layer and a melt-blown non-woven layer. Fabric layer. In addition to supporting the mask, the non-woven fabric layer also acts as a part of the sieve, and particles with large particle sizes will be blocked by them.

Non-woven fabrics have the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. For example, polypropylene (pp material) pellets are mostly used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling.

Non-woven characteristics

Non-woven fabrics have no warp and weft threads, are very convenient for cutting and sewing, and are light in weight and easy to shape, so they are deeply loved by handicraft lovers. Because it is a fabric that does not need spinning and weaving, it is just oriented or random arrangement of short textile fibers or filaments to form a web structure, and then reinforced by mechanical, thermal bonding or chemical methods.

It is not interwoven and braided by one yarn, but the fibers are directly bonded together through physical methods, so when you get the sticky scale in your clothes, you will find that, It is impossible to pull out a single thread. Nonwovens have broken through the traditional textile principles, and have the characteristics of short process flow, fast production rate, high output, low cost, wide application, and multiple sources of raw materials.

The relationship between non-woven fabrics and spunbonded fabrics

Spunbond fabrics and non-woven fabrics are subordinate. There are many production processes for the manufacture of non-woven fabrics, among which spunbond method is one of the non-woven fabric production processes (including spunbond method, melt blown method, hot rolling method, spunlace method, most of which are currently on the market Non-woven fabric produced by spunbond method).

According to the composition of non-woven fabrics, there are polyester, polypropylene, nylon, spandex, acrylic, etc.; different compositions will have completely different styles of non-woven fabrics. The spunbond fabric usually refers to polyester spunbond and polypropylene spunbond; and the styles of these two fabrics are very similar, and can only be identified through high temperature testing.

It is not interwoven and braided by one yarn, but the fibers are directly bonded together through physical methods, so when you get the sticky scale in your clothes, you will find that, It is impossible to pull out a single thread. Nonwovens have broken through the traditional textile principles, and have the characteristics of short process flow, fast production rate, high output, low cost, wide application, and multiple sources of raw materials.

Advantages of graphene non-woven fabrics

1. Antibacterial and antibacterial function

The unique two-dimensional structure of the mineral graphene enables it to have a strong dispersion interaction with the phospholipid molecules on the bacterial cell membrane. When graphene contacts the bacterial cell membrane, it can induce the phospholipid molecules on the cell membrane to leave the cell and climb up the growth The surface of the material graphene, so as to realize the large-scale direct extraction of the phospholipid molecules on the cell membrane by graphene, and then destroy the cell membrane of the bacteria, and kill the bacteria through physical action.

2. Far infrared function

The far-infrared function of graphene can absorb more than 88% of far-red light with a wavelength of 6-14 microns at a low temperature of 20-35 degrees, which helps to accelerate the surface temperature of the skin, dilate capillaries, and improve the microcirculation of the body . It can be used for medical protective equipment - protective clothing, surgical clothing, masks, hats, etc.