An olive anti-attenuation high-strength pp spunbonded nonwoven fabric

Abstract

The invention provides an olive anti-attenuation high-strength PP spunbonded nonwoven fabric, the PP spunbonded nonwoven fabric has an MD strength of 41.74-42.45 (N / 5cm); a CD strength of 18.25-19.44 (N / 5cm); a PP spunbonded nonwoven fabric The fabric preparation process includes: melting and extruding the polypropylene polymer through a large screw extruder, filtering, spinning, and air-drawn stretching to lay the filaments into a web, and the fiber web is passed through upper and lower pressure rolls, and hot-rolled by a rolling mill. Bonding to form a spunbond non-woven fabric, and finally winding, slitting, and making. The mouthpiece made of the prepared spunbonded nonwoven fabric can have good strong attenuation ability and electrostatic adsorption ability, which can significantly improve the anti-heat attenuation ability of the medical mask, accumulate the amount of charge, and prolong the electrostatic adsorption time of the medical mask.

Description

technical field [0001] The invention relates to a spun-bonded non-woven fabric, in particular to an olive anti-attenuation high-strength PP spun-bonded non-woven fabric. Background technique [0002] The main materials of spunbond nonwovens are polyester and polypropylene. The main products of spunbond non-woven fabrics are polypropylene and polyester (long fiber, short fiber) non-woven fabrics. The most common and commonly used applications are non-woven bags and non-woven packaging. Of course, spunbonded non-woven fabrics are also used in disposable masks, and are bonded together with meltblown fabrics up and down to filter impurities; generally speaking, the sterilization principle of meltblown fabrics for masks mainly adopts the method of electrostatic adsorption , Adsorb small particles such as bacteria to the surface of the cloth, prevent them from entering the mouth, and play a role in killing bacteria. However, during the use of melt-blown cloth, with the continuou...

AI Technical Summary

Problems solved by technology

However, during the use of melt-blown cloth, with the continuous release of static electricity, its electrostatic adsorption capacity continues to decline, and the release will be completed within a few days at the earliest. The main reason is that there are more impurities and the frequency of electrostatic discharge is higher; the second is because The filter capacity of the outer spunbonded non-woven fabric is weak and cannot play its due role

[0003] The spunbonded nonwoven fabric as the outer layer is a barrier for bacteria to enter and meet the inner electrostatic adsorption meltblown fabric. Therefore, if bacteria are blocked on the outer layer of the spunbonded nonwoven fabric as much as possible, it will be beneficial to increase the number of middle layer meltblown nonwoven fabrics. The density and depth of the charge trap in the cloth, the effective release of negative ions and the storage of charges to improve the comprehensive filtration efficiency and thermal attenuation ability of the melt-blown non-woven fabric are of great significance; at the same time, since the mask is a daily consumable , is also a necessity during the epidemic period, and the length of its storage time is also of great significance, but because the spunbonded non-woven fabric of polypropylene material is weak in oxidation resistance, resulting in long-term storage or under the condition of light, the strength attenuation is relatively large, based on Therefore, an olive anti-attenuation high-strength PP spunbonded nonwoven fabric that can maintain electrostatic adsorption capacity for a long time is urgently needed to be invented.

Images