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 have good filterability, 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 process of melt-blown non-woven fabric: polymer feeding --- melt extrusion --- fiber formation --- fiber cooling --- netting --- reinforcement into cloth.

Application range

(1) Medical and sanitary cloths: surgical gowns, protective clothing, sterilization wraps, masks, diapers, sanitary napkins, etc.;

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

(3) Cloth for clothing: lining, adhesive lining, flakes, shaped cotton, various synthetic leather backings, etc.;

(4) Industrial fabrics: filter materials, insulating materials, cement 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 filter, tea bags, etc.

Meltblown cloth is the "heart" of medical surgical masks and N95 masks.

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

Flat face masks are generally PP spunbond + meltblown + PP spunbond. You can also use a layer of short fiber to improve skin feel. Three-dimensional cup-shaped 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 a waterproof treatment, which is mainly used to isolate the droplets sprayed by the patient; the middle melt-blown layer is a specially processed melt-blown non-woven fabric, which has good filtering and shielding properties , Thermal 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 non-woven fabrics, the raw materials are polypropylene, but the manufacturing process is not the same.

Among them, the fiber diameter of the spunbond layer on both sides is thicker, about 20 microns; the fiber diameter of the middle meltblown layer is only 2 microns, made of a polypropylene material called high-melt fat fiber.