阅读说明：本技术 复合层无纺布制备方法 (Preparation method of composite layer non-woven fabric ) 是由 李晓娇 李彪 于 2017-05-15 设计创作，主要内容包括：本发明提供一种复合层无纺布制备方法、无纺布制品,制备复合层无纺布时,先制备无纺布基层,然后在无纺布基层的至少一面上镀氢氧化钙颗粒镀层。氢氧化钙颗粒具有极强的杀菌、抗菌作用,氢氧化钙颗粒可以强烈地破坏细菌体中蛋白酶,使蛋白酶丧失活性,导致细菌死亡。当细菌被氢氧化钙颗粒杀后,再与其它菌落接触,周而复始地进行上述过程,达到持续性的杀菌抗菌。因此,本发明在无纺布基层的一面或两面镀有氢氧化钙颗粒镀层,可将聚集在该面上的细菌和病毒杀死,具有优异的杀菌、抗菌功效。同时使得利用该复合层无纺布制得的产品也都具备持续的杀菌抗菌能力。且氢氧化钙颗粒相比银离子成本也大大降低,降低了无纺布抗菌杀菌的应用成本。(The invention provides a preparation method of a composite layer non-woven fabric and a non-woven fabric product. The calcium hydroxide particles have strong bactericidal and antibacterial effects, and can strongly destroy proteases in bacteria, so that the proteases lose activity and the bacteria die. After the bacteria are killed by the calcium hydroxide particles, the bacteria are contacted with other bacterial colonies, and the processes are repeatedly carried out to achieve continuous sterilization and antibiosis. Therefore, the calcium hydroxide particle coating is plated on one surface or two surfaces of the non-woven fabric base layer, so that bacteria and viruses gathered on the surface can be killed, and the non-woven fabric base layer has excellent sterilization and antibacterial effects. Meanwhile, the product prepared by the composite layer non-woven fabric has continuous sterilization and antibiosis capability. And compared with silver ions, the cost of the calcium hydroxide particles is greatly reduced, and the application cost of the non-woven fabric for antibiosis and sterilization is reduced.)

1. A preparation method of composite layer non-woven fabric is characterized by comprising the following steps:

preparing a non-woven fabric base layer;

plating a calcium hydroxide particle plating layer on at least one surface of the non-woven fabric base layer;

forming a calcium hydroxide particle coating on at least one surface of the non-woven fabric base layer by adopting a vacuum evaporation, sputtering or ion plating mode;

when a calcium hydroxide particle coating is formed on at least one surface of the non-woven fabric base layer by adopting a sputtering plating mode, the process conditions of the sputtering plating are as follows:

the adopted sputtering target material is calcium hydroxide particles, and the sputtering gas is pure hydrogen; in the sputtering process, the temperature of the dressing base material is room temperature, the temperature of the target material is less than or equal to 80 ℃, and the background vacuum degree is less than (2-6) × 10^-4Pa; the working pressure during sputtering is 0.1^-5Pa, sputtering power of 30-50W, and sputtering time not less than l minutes; keeping the distance between the substrate and the target material at 30-170 mm during sputtering;

after the non-woven fabric base layer is prepared, before the calcium hydroxide particle coating layer is coated on at least one surface of the non-woven fabric base layer, the method further comprises the following steps: and carrying out corona treatment on the surface of the non-woven fabric base layer on which the calcium hydroxide particle coating is to be formed.

2. The method for preparing a composite-layer nonwoven fabric as claimed in claim 1, wherein the calcium hydroxide particle plating layer is composed of natural nanoscale calcium hydroxide particles, and the thickness of the calcium hydroxide particle plating layer is from 10 nm to 100 nm.

3. The method of claim 1, wherein the calcium hydroxide particles are derived from at least one of the following animal calcium sources:

scallop shells, abalone shells, conch shells, surf clam shells, sea urchin shells, coral shells, and egg shells.

Technical Field

The invention relates to the field of non-woven fabrics, in particular to a preparation method of a composite layer non-woven fabric and a non-woven fabric product.

Background

Non-woven fabrics (non woven), also known as non-woven fabrics, are formed by oriented or random fibers, are a new generation of environment-friendly materials, have the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich colors, low price, recyclability and the like, and are widely applied in production and life. For example, the adhesive has wide application in products such as paper diapers, sanitary towels, protective pads, wet tissues, band-aids, masks, food packaging bags and the like; the application scenes all need that the non-woven fabric has the antibacterial and bactericidal capability, and the silver ions are added into the non-woven fabric to realize the antibacterial and bactericidal function at present.

The silver particles can act as a catalyst for oxidation reactions, breaking the-SH bonds in the zymogen, and preventing the bacteria from effectively synthesizing the proteins or nutrients required for their survival. The silver particles can also be used as a catalyst for generating atomic oxygen in water or air to achieve the sterilizing effect like hydrogen peroxide. The research shows that although nano silver is a good air bactericide, the sterilization mechanism of the nano silver may be different according to different strains, and the research finds that the antibacterial effect of the silver-containing clothes in the air is better than that of the common silver nitrate solution and the like.

Silver also has excellent antibiotic and sterilizing effects. The general antibiotic can only act on 6 germs on average, but the silver can kill 650 germs. Silver ions can weaken the enzymes acting in the body of the pathogenic bacteria, thereby preventing side effects and strengthening the tolerance of the pathogenic bacteria and fundamentally controlling the propagation of the pathogenic bacteria. The nano silver is obtained by nano-converting "silver" in noble metals and then applying the nano silver to various consumer products. However, the existing nano technology focuses on the technical research on how to prepare nanoparticles, and the nanoparticles are attached to application products in other ways, so that the preparation cost of the nano silver is very high, which causes high application cost of the nano silver on non-woven fabrics, and limits the popularization and application of the nano silver.

Disclosure of Invention

The invention provides a preparation method of a composite layer non-woven fabric and a non-woven fabric product, and aims to solve the problem of high application cost caused by antibacterial sterilization of the existing non-woven fabric by using silver ions.

In order to solve the technical problem, the invention provides a preparation method of a composite layer non-woven fabric, which comprises the following steps:

preparing a non-woven fabric base layer;

and plating a calcium hydroxide particle plating layer on at least one surface of the non-woven fabric base layer.

In one embodiment of the present invention, the calcium hydroxide particle coating layer is formed with natural nanometer level calcium hydroxide particles in the thickness of 10-100 nm.

In one embodiment of the invention, the calcium hydroxide particles are derived from at least one of the following animal calcium sources:

scallop shells, abalone shells, conch shells, surf clam shells, sea urchin shells, coral shells, and egg shells.

In one embodiment of the present invention, the plating of the calcium hydroxide particle on at least one side of the nonwoven fabric substrate comprises:

and plating a calcium hydroxide particle plating layer on the front surface or the back surface of the non-woven fabric base layer.

In one embodiment of the present invention, a calcium hydroxide particle coating layer is formed on at least one surface of the nonwoven fabric substrate by vacuum evaporation, sputtering or ion plating.

In one embodiment of the present invention, when the calcium hydroxide particle coating layer is formed on at least one side of the nonwoven fabric substrate by a sputtering plating method, the process conditions of the sputtering plating are as follows:

the adopted sputtering target material is calcium hydroxide particles, and the sputtering gas is pure hydrogen; in the sputtering process, the temperature of the dressing base material is room temperature, the temperature of the target material is less than or equal to 80 ℃, and the background vacuum degree is less than (2-6) × 10-4 Pa; the working pressure during sputtering is 0.1-5Pa, the sputtering power is 30-50W, and the sputtering time is not less than l minute; during sputtering, the distance between the substrate and the target material is maintained within 30-170 mm.

In one embodiment of the present invention, after preparing the non-woven fabric substrate, before plating the calcium hydroxide particle plating layer on at least one side of the non-woven fabric substrate, the method further comprises:

and carrying out corona treatment on the surface of the non-woven fabric base layer on which the calcium hydroxide particle coating is to be formed.

In one embodiment of the present invention, the preparing the non-woven fabric substrate comprises mixing calcium alginate fibers with cellulose fibers to prepare the non-woven fabric substrate;

the non-woven fabric base layer is prepared in any one of the following modes:

mixing calcium alginate loose fibers and cellulose loose fibers, carding and needling to prepare the calcium alginate fiber composite material;

the calcium alginate loose fibers are combed into a net and then are subjected to composite needling with cellulose spunlace non-woven fabrics to prepare the calcium alginate spunlace non-woven fabric;

the calcium alginate loose fibers are combed into a net and then are subjected to composite needling with cellulose woven fabric to prepare the calcium alginate fiber composite material.

In one embodiment of the invention, the cellulosic fibers are selected from at least one of cotton fibers, hemp fibers, and viscose fibers.

In order to solve the problems, the invention also provides a non-woven fabric product, which comprises the composite layer non-woven fabric prepared by the preparation method of the composite layer non-woven fabric; the non-woven fabric product is a paper diaper, a sanitary towel, a protection pad, a wet tissue, a band-aid, a mask or a food packaging bag.

In order to solve the problems, the invention also provides a non-woven fabric product which is prepared by the composite layer non-woven fabric; the non-woven fabric product is a paper diaper, a sanitary towel, a protection pad, a wet tissue, a band-aid, a mask or a food packaging bag.

The invention has the beneficial effects that:

according to the preparation method of the composite layer non-woven fabric and the non-woven fabric product, when the composite layer non-woven fabric is prepared, the non-woven fabric base layer is prepared, and then the calcium hydroxide particle coating is plated on at least one surface of the non-woven fabric base layer. The calcium hydroxide particles have strong bactericidal and antibacterial effects, and can strongly destroy proteases in bacteria, so that the proteases lose activity and the bacteria die. After the bacteria are killed by the calcium hydroxide particles, the bacteria are contacted with other bacterial colonies, and the processes are repeatedly carried out to achieve continuous sterilization and antibiosis. Therefore, the calcium hydroxide particle coating is plated on one surface or two surfaces of the non-woven fabric base layer, so that bacteria and viruses gathered on the surface can be killed, and the non-woven fabric base layer has excellent sterilization and antibacterial effects. Meanwhile, products such as paper diapers, sanitary towels, protection pads, wet tissues, band-aids, masks, food packaging bags and the like made of the composite layer non-woven fabric also have continuous sterilization and antibiosis capabilities. And compared with silver ions, the cost of the calcium hydroxide particles is greatly reduced, and the application cost of the non-woven fabric for antibiosis and sterilization is reduced.

Drawings

FIG. 1 is a schematic view of a composite nonwoven fabric structure according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a composite nonwoven fabric according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a composite nonwoven fabric according to a first embodiment of the present invention;

FIG. 4 is a schematic flow chart of a calcium hydroxide particle extraction method provided in the second embodiment of the present invention;

FIG. 5 is a schematic flow chart of a method for preparing a composite layer nonwoven fabric according to a third embodiment of the present invention;

FIG. 6 is a schematic view of a sanitary napkin according to a fourth embodiment of the present invention;

FIG. 7 is a cross-sectional view taken in the direction of A-A of the sanitary napkin in FIG. 6;

FIG. 8 is a first schematic structural diagram of a band-aid according to a fourth embodiment of the present invention;

fig. 9 is a schematic view of a second woundplast structure provided by the fourth embodiment of the invention.

Detailed Description

Some specific embodiments of the present invention will be described below in detail; it is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, the use of the terms "a" and "an" and "the" and similar referents in the specification (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein.