Bacteriostatic non-woven fabric and preparation method thereof

Abstract

The invention discloses a bacteriostatic non-woven fabric and a preparation method thereof. The bacteriostatic non-woven fabric is composed of bacteriostatic ES fiber; the bacteriostatic ES fiber comprises a core layer and a surface layer; the volume ratio of the core layer to the surface layer is 1: (0.5-1); the core layer is prepared from polypropylene; and the surface layer is prepared from the following raw materials in percentage by mass of 90-97% of polyethylene, 0.3-3% of zinc oxide, 0.2-1% of silicon dioxide, 1-3% of a dispersing agent, 1-2% of an antioxidant and 0.5-1% of a cross-linking agent. The zinc oxide bacteriostatic agent is dispersed into the fiber surface layer of the PE / PP fiber, and the bacteriostatic non-woven fabric which is high in cost performance, non-toxic and harmless to the human body and capable of being stably produced in mass is manufactured.

Description

Technical field [0001] The present invention relates to a technical field masks nonwovens, more particularly, it relates to a method of preparing a nonwoven fabric and bacteriostatic. Background technique [0002] Currently, more mature commercial antibacterial nonwoven fabric prepared There are three main methods: [0003] 1, fiber nonwoven fabric impregnated padding process: non-woven fabric impregnated, coated or padding processing aids contain bacteriostatic agents, and then evaporated by high temperature baking or other methods, such non-woven fibers the precipitation of a layer of an insoluble or sparingly soluble bacteriostatic agent, thereby obtaining the nonwoven fabric antibacterial properties; by the presence of chemical constituents adhesive aids, and the like, prone fabric odor when used as a disposable mask material or cause allergic . Moreover most existing antibacterial product uses a copper oxide or silver oxide heavy metal ions antibacterial ingredients, when th...

AI Technical Summary

Problems solved by technology

In addition, most of the existing antibacterial products use heavy metal ion antibacterial components such as silver oxide or copper oxide. When used in masks, there is a risk of heavy metal ions separating out and passing through the skin barrier.

[0004] 2. Microcapsule method of viscose fiber non-woven fabric: Microencapsulate organic antibacterial agents such as chitin or artemisinin to make microcapsule antibacterial agents, and then mix them with spinning stock solution for spinning treatment. To distribute microcapsule antibacterial agents in viscose fibers, the applicable process temperature range is much narrower than that of high polymer materials. In addition, it cannot be spunbonded or hot-rolled, making it difficult to make the surface of masks, especially In the application of disposable masks, it is not easy to be fixed by ultrasonic welding process and other non-woven fabrics

[0005] 3. Doping co-melting of chemical fiber non-woven fabrics: In the chemical fiber spinning process, the antibacterial agent powder or masterbatch and polyester masterbatch are co-melted and then spun, so that the antibacterial agent is dispersed in the fiber and embedded on the surface of the fiber , but in the prior art, the bacteriostatic agent is mainly composed of silver ions or copper ions, the cost is high, and it also belongs to heavy metal ions, and there is a risk of heavy metal precipitation when used in face masks, while non-heavy metal bacteriostatic agents with cost advantages are now available. The dispersion of antibacterial components cannot be solved in the existing technology, which affects production efficiency and cost

[0006] In addition, the price of antibacterial raw materials is relatively high. If it is mixed in the fiber, the antibacterial material in the fiber core cannot function well, and there is a waste of materials.

[0007] In the application of antibacterial masks, the fabric on the face-facing side of commercial masks at this stage will fluff after being worn for a long time, which will affect the wearing comfort and even cause allergies to sensitive skin. Effectively solve the problem of fluffing, but it is hard, and it is easy to slip between the adjacent fabric after being made into a mask, and the skin touch is poor when worn