Teach you to interpret the production fabrics of masks, especially the protection of viruses-MeltblownTeach you to interpret the production fabrics of masks, especially the protection of viruses-Meltblown
During the epidemic prevention period, the most important thing is masks. I expect that in the past six months, the demand for masks will be very large.
Now I teach you the professional knowledge of fabrics for masks:
Three layers of fabrics are required for masks: The outermost layer is PP non-woven fabric (spunbond), the specification is 30gsm, the width is 178MM, and the number of masks that can be produced per kilogram is 1306.
The diameter of the material roll is less than 700MM, the middle layer fabric is MB non-woven fabric is melt-blown cloth, the weight is 25GSM, the width is 180MM, the number of masks produced per kilogram is 1269, and the diameter of the material roll is less than
700MM, GB2626-kn95 standard / BFE99%, the innermost fabric is PP non-woven fabric (spunbond), 25GSM, wide width 200MM, the number of masks produced per kilogram is 1465, and the diameter of the roll is less than 700,
Next, focus on meltblown cloth
Meltblown cloth mainly uses polypropylene as the main raw material, and the fiber diameter can reach 1 to 5 microns. With many voids, fluffy structure and good fold resistance, these ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, thus making the melt-blown cloth with good filtering, shielding, heat insulation and oil absorption . It can be used in the fields of air, liquid filtration materials, insulation materials, absorption materials, mask materials, thermal insulation materials, oil-absorbing materials and wipers.
The Chinese name is melt-blown cloth, and the foreign name is melt-blown nonwovens. The raw material is mainly polypropylene, in addition to polyurethane, and the diameter of polylactic acid fiber is 1 to 5 microns. It has a unique capillary structure. The alias is melt-blown non-woven fabric, melt Spraying non-woven fabrics, etc .;
The main applications of meltblown fabrics are:
(1) Medical and sanitary cloths: masks, surgical gowns, protective clothing, sterilization wraps, diapers, sanitary napkins, etc .;
(2) Fabrics for home decoration: wall coverings, tablecloths, bed sheets, bed covers, etc .;
(3) Follow-up cloth: lining, adhesive lining, flakes, shaped cotton, various synthetic leather base cloth, etc .;
(4) Industrial fabrics: filter materials, insulation materials, cement bags, geotextiles, covering fabrics, etc .;
(5) Agricultural cloth: crop protection cloth, nursery cloth, irrigation cloth, thermal insulation curtain, etc .;
(6) Others: space cotton, thermal insulation and sound insulation materials, linoleum, cigarette filter, tea bags, etc.
The melt-blown filter material is composed of polypropylene microfibers randomly distributed and bound together. The appearance is white, smooth and soft. The fiber fineness of the material is 0.5-1.0 μm. The random distribution of fibers provides more thermal bonding between fibers Chance, so that the melt-blown gas filter material has a larger specific surface area and higher porosity (≥75%). After high-pressure electret filtering efficiency, the product has the characteristics of low resistance, high efficiency and high dust capacity.
The main specifications are:
Width: generally 160cm and 180mm (general factories can also be determined according to customer needs)
Melt-blown cloth is a high-speed hot air flow to draw a thin stream of polymer melt extruded from the die orifice, thereby forming ultra-fine fibers and collecting them on the condensed screen or roller, and at the same time bonding themselves to become Meltblown nonwoven fabric.
The production process of melt-blown cloth is mainly as follows:
1. Melt preparation
4. Melt is extruded from the spinneret
5. Melt flow drafting and cooling
Product uses are:
Meltblown cloth uses polypropylene as the main raw material, and the fiber diameter can reach 0.5-10 microns. These ultrafine fibers with unique capillary structure increase the number and surface area of fibers per unit area, thereby making the meltblown cloth have good air filtration properties It is a good mask material. In large, medium and small medical institutions, in earthquake- and flood-affected areas, and in the high incidence season of new coronary pneumonia, SARS, avian influenza and H1N1 virus, the melt-blown filter paper is playing a role Irreplaceable role.
The main use of melt-blown non-woven fabrics is:
1. Filter material
2. Medical and health materials
3. Environmental protection materials
4. Clothing materials
5. Battery separator material
6. Wipe the material
Among them, filter materials are the most widely used, followed by medical and health materials, environmental protection materials, clothing materials, battery separator materials and wipe materials.
If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.