The heart of the mask--meltblown non-woven fabric

The melt-blown non-woven fabric is mainly made of polypropylene as the main raw material, and the fiber diameter can reach 1-5 microns. With many voids, fluffy structure and good wrinkle resistance, these ultra-fine fibers with unique capillary structure increase the number and surface area of u200bu200bfibers per unit area, so that meltblown non-woven fabrics have good filtering, shielding, thermal insulation and Oil absorption. It can be used in air, liquid filter materials, isolation materials, absorbing materials, mask materials, thermal insulation materials, oil absorbing materials and wiping cloths and other fields.

The process of melt-blown non-woven fabrics: polymer feeding---melt extrusion---fiber formation---fiber cooling---web formation---reinforcement into cloth.

Scope of application

(1) Medical and sanitary cloth: surgical gowns, protective clothing, disinfection wraps, masks, diapers, women's sanitary napkins, etc. ; (2) Home decoration fabrics: wall coverings, tablecloths, bed sheets, bedspreads, etc.; (3) Clothing fabrics: linings, adhesive linings, flakes, shaped cotton, various synthetic leather base fabrics, etc.; (4) Industrial fabrics: filter materials, insulating materials, cement packaging bags, geotextiles, covering fabrics, etc.; (5) Agricultural fabrics: crop protection fabrics, seedling raising fabrics, irrigation fabrics, thermal insulation curtains, etc.; (6) Others: space Cotton, thermal insulation and sound insulation materials, linoleum, cigarette filters, tea bags, etc.

Meltblown non-woven fabrics can be called the 'heart' of medical surgical masks and N95 masks.

Medical surgical masks and N95 masks generally adopt a multi-layer structure, referred to as SMS structure: a single-layer spunbond layer (S) on both sides of the inner and outer sides; a melt-blown layer (M) in the middle, generally divided into single or multiple layers.

Flat masks are generally PP spunbond + meltblown + PP spunbond, or one layer of staple fiber can be used to improve skin touch. Three-dimensional cup masks are generally PET polyester needle-punched cotton + meltblown + needle-punched cotton or PP spunbond. Among them, the outer layer is a non-woven fabric with waterproof treatment, which is mainly used to isolate the droplets sprayed by the patient; the middle melt-blown layer is a specially-treated melt-blown non-woven fabric, which has good filtering and shielding properties. , heat insulation and oil absorption, are important raw materials for the production of masks; the inner layer is ordinary non-woven fabrics.

Although the spunbond layer (S) and meltblown layer (M) of the mask are both non-woven fabrics, and the raw materials are polypropylene, the production process is different.

Among them, the fiber diameter of the spunbond layer on the inner and outer sides is relatively thick, about 20 microns; the fiber diameter of the meltblown layer in the middle is only 2 microns, which is made of a polypropylene material called high-melt fat fiber. production.

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