Production method of breathable melt-blown nonwoven fabrics

Abstract

The invention discloses a production method of breathable melt-blown nonwoven fabrics, which is used for producing polymer superfine fibers by means of well-known melt blowing. The method is characterized in that an electrostatic flocking box is arranged between a melt-blowing die head and a receiving device, superfine fibers pass through the electrostatic flocking box to be adhered with short fibers which perpendicularly fly down in the electrostatic flocking box under the action of an electrostatic field, and breathable melt-blown nonwoven fabrics are formed when the superfine fibers and the short fibers reach the receiving device. The polymer is one of polypropylene, polyester, polybutylene terephthalate, polytrimethylene terephthalate or mixture of the above materials. The short fibers are highly moisture absorbable, 2-20 micrometers in diameter and 3-15 micrometers in length, adding amount of the short fibers accounts for 5-30% of the total weight of the breathable melt-blown nonwoven fabric, and the short fibers are provided by a feeding mechanism. The flocking output voltage of the electrostatic flocking box ranges from 20KV to 60KV, the distance between the melt-blowing die head and the electrostatic flocking box ranges from 10cmm to 40cm, and the distance between an upper pole plate and a lower pole plate in the electrostatic flocking box ranges from 30cmm to 50cm.

Description

technical field [0001] The invention relates to nonwoven fabric technology in the field of textiles, in particular to a method for preparing a melt-blown nonwoven fabric with sweat-wicking and moisture-conducting functions. Background technique [0002] Melt-blown nonwovens technology is one of the polymer direct-forming methods. It is the polymer melt extruded by the screw extruder, which is blown with high-speed and high-temperature air to make the melt fine stream extremely stretched to form ultra-fine fibers, and then gathered on the web forming curtain or web forming drum to form fibers. A production technology in which the net is reinforced by self-adhesion to make a non-woven fabric. The melt-blown non-woven fabric prepared by the melt-blown non-woven fabric technology generally has a fiber fineness between 1 μm and 5 μm, and there are a large number of fine voids in the product, so that the system space contains a large amount of still air, which blocks heat dissipa...

AI Technical Summary

Problems solved by technology

On the one hand, this preparation method makes polyester staple fibers consistent with melt-blown fibers, and the thickness and pressure resistance of the non-woven flakes are limited; in addition, the problem of poor sweat and moisture conduction is not solved by doping polyester staple fibers

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