JPH09188965A - Deodorizing antibacterial nonwoven fabric roll-coated with inorganic ion-adsorption deodorizing agent and production process thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing antibacterial nonwoven fabric having high deodorizing and antibacterial functions, excellent safety free from toxicity to human body and easy handleability. SOLUTION: An organic solvent solution of a polyester, polypropylene, polyethylene, etc., is spun through a spinning nozzle and the produced filaments are carried on an air stream ejected from an air gun, transported through a guide tube with the air stream and dispersed on a moving collection face with a dispersing nozzle. As an alternative, the spun filaments are swung in horizontal direction and deposited on a collection face moving perpendicular to the horizontal swinging direction. A spun-bond nonwoven fabric produced by the heat-embossing or needle-punching of the obtained web or the bonding of the filaments of the web is mixed with a powdery material produced by the double decomposition of fine powder of amorphous silicon dioxide and amorphous zinc oxide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant antibacterial non-woven fabric and a method for producing the same, which has both a so-called deodorant effect and an antibacterial effect, is not toxic to humans and is excellent in safety and easy to handle. We provide deodorant and antibacterial non-woven fabrics with high deodorant and antibacterial functions, such as fences and interior materials for moving vehicles and indoors, various filter materials, materials for deodorant masks, sanitary napkins, bandages, and Pap material base cloth. ,
Medical hygiene materials such as disposable diapers, materials for bedding materials such as bed sheets, pillowcases and duvet covers, deodorant sheets for indoor refrigerators, fishing supplies with a fresh odor, as well as packaging materials such as clothing and food. It is intended to provide a deodorant antibacterial non-woven fabric which can be easily manufactured and which can be effectively used for the above.

[0002]

2. Description of the Related Art Recently, as the health problems caused by cigarettes have become a hot topic, the anti-smoking movement spreads worldwide, and the unpleasant sensation caused by the smell of cigarettes has been openly pointed out. Now that the discomfort of the company has been pointed out, I was enthusiastic about the deodorization of the reception room of the company and the living room of the home, and the development of deodorization technology could be actively promoted. However, the components contained in cigarette smoke include nicotine, acetaldehyde (CH ₃ CHO), acetic acid (CH ₃ COOH), ammonia (NH ₃ ), hydrogen sulfide, etc. The lower fatty acids such as acetic acid and isovaleric acid are known, and the components contained in them are diverse, and the fact that they are surprisingly large causes difficulties in the development of deodorant technology.

Therefore, many fiber products having an antibacterial and deodorant function for making a healthy and comfortable living environment have appeared according to needs.

Conventionally, regarding the non-woven fabric having a deodorizing function,
It is known to use physical adsorption of alumina, activated carbon, zeolite, etc., and to utilize the chemical reaction between chemicals and malodorous components. Fiber made from synthetic resin by kneading deodorant into it. To make a non-woven fabric,
Alternatively, many examples have been known in which the surface of the non-woven fabric is coated with a deodorant to have a deodorant function.

As a physical method utilizing physical adsorption of alumina, activated carbon, zeolite and the like, antibacterial property is imparted by ionic dissociation of antibacterial metal supported on zeolite, and biguanite is added for imparting antibacterial property. Various antibacterial agents such as derivatives and organosilicon quaternary ammonium salts have been coated on fibers and cloths, but there is a concern that they may be re-released by physical adsorption, and when activated carbon is used as a deodorant. Since the material itself is black, the field of application is limited, and in the case of zeolite etc., it preferentially adsorbs water, so there is a problem of storage and performance deterioration in a humid environment. there were.

As a chemical method utilizing a chemical reaction between a drug and a malodorous component, its deodorizing effect is selective, or the deodorant itself and the harmfulness of the substance after the reaction are problems. Handle with care.

Further, a method of converting an odorous component into an odorless component by a photocatalytic reaction of ultraviolet rays has also appeared.

However, such a method does not have a deodorizing effect, may cause a bad odor, or may cause a skin disorder in a newborn having weak skin.

For this reason, there has been introduced a product using chitosan or a chitosan derivative which is not highly toxic to the human body and is extremely safe. However, the antibacterial fiber containing an inorganic acid salt of chitin has a very high acidity, When industrially used, it must be handled with care and the waste liquid treatment cost is high.

[0010]

DISCLOSURE OF THE INVENTION The present invention has been proposed to solve the above-mentioned drawbacks, and as the health problems caused by cigarettes became a hot topic and the discomfort caused by the smell of cigarettes was publicly pointed out, Deodorization of nicotine, acetaldehyde, acetic acid, ammonia, hydrogen sulfide, etc., as components contained in the smoke of people, and also the discomfort of body odor due to westernization of eating habits has come to be pointed out, which is said to be the cause of body odor. In addition to deodorizing lower fatty acids such as acetic acid and isovaleric acid, which eliminates unpleasant odors to improve healthy and comfortable clothing life and living environment, it also serves as a welfare product in response to the super-aging society. Since textile products with antibacterial and deodorant functions that do not smell have also been expected, we propose deodorant and antibacterial nonwoven fabrics that are highly safe and meet a wide range of applications in response to these needs.

It has a so-called deodorant effect and antibacterial effect,
What's more, it provides a deodorant antibacterial non-woven fabric that is not toxic to humans, has excellent safety, and is easy to handle and has a high deodorant and antibacterial function. Amorphous silicon dioxide and amorphous zinc oxide are pulverized and double decomposed. By roll-coating the mixed inorganic ion-adsorbing deodorant, the ions of the odorous component are combined with the deodorant ions to exert the deodorizing effect and antibacterial effect.

As its applications, materials for fences and interior goods for moving vehicles and indoors, various filter materials, materials for deodorizing masks, sanitary napkins and bandages, vap base cloths, medical hygiene materials such as disposable diapers, and bed sheets. ,
Easy to use deodorant antibacterial non-woven fabric that can be effectively used not only for bedding materials such as pillow covers and duvet covers, deodorant sheets for indoor refrigerators, fishing supplies with a raw odor, but also packaging materials such as clothes and food. The present invention provides a deodorant antibacterial nonwoven fabric that can be manufactured according to the present invention.

[0013]

According to the present invention, a filament group obtained by spinning an organic solvent solution of polyester, polypropylene, polyethylene or the like from a spinning nozzle is put on an air stream by an air gun, and is conveyed in a guide tube together with the air stream.
The filaments dispersed or spun on the moving collecting surface by the dispersing nozzle are vibrated in the horizontal direction, and are deposited on the moving collecting surface moving in the direction orthogonal to the horizontal direction to form a web. Inorganic ions obtained by finely pulverizing amorphous silicon dioxide and amorphous zinc oxide into a spun-pond nonwoven fabric made by heat embossing the web, needle punching, or bonding filaments together A method for producing a deodorant antibacterial non-woven fabric, which is characterized in that an adsorption type deodorant is roll-coated, and an inorganic ion adsorption type deodorant is roll-coated on the non-woven fabric formed by the spun pond method produced by the production method. This is a deodorant antibacterial non-woven fabric.

Regarding the deodorizing effect as a result of the present invention,
When the deodorant effect of the commercialized product was tested, effective results were seen. Explaining the test method, for natural materials with a relatively high water content, polyamide (nylon), etc., a sample (560c
m ² ) is attached to the inner wall of the glass, and a preheated watch glass is placed on the bottom of the desiccator, and then ammonia (480 pp ^m ) hydrogen sulfide (30 ppm) as a malodorous component (liquid) is added to the watch glass. It was put on the above, volatilized in a sealed state, left for 1 hour, and the residual concentration of the malodorous component in the desiccator was measured with a detector tube.

Further, polyester having a relatively low water content,
Polypropylene, Acrylic, Polyamide (Nylon)
For the above, the test cloth was sampled so that the width was 7 cm and the weight was 3 g, cut into strips at 1 cm intervals, and the test cloth was wrapped around the pipe connected to the stopper of the 500 ml poly washing bottle. Put the malodorous component into the washing bottle, quickly attach the tube wrapped with the test cloth, close the inlet to make it a sealed state, and remove the malodorous component ammonia at 40 ° C and hydrogen sulfide.
After warming in warm water at ℃ for 1 minute and leaving it at room temperature for 20 minutes, the residual concentration of the malodorous gas in the plastic cleaning bottle was measured with a detector tube.

The amount of the malodorous component added was such that the atmosphere concentration in the poly-cleaning bottle after heating for 1 minute without wearing a cloth and leaving for 3 minutes was 200 ppm for ammonia and 20 ppm for hydrogen sulfide.
It was adjusted to become.

The components of the deodorant used in the present invention have a weakly ionized surface, the silanol groups of amorphous silicon dioxide are ionized into negative ions, and the amorphous zinc oxide is ionized into positive ions. Then, it adsorbs an ionized substance, and since it has both positive and negative ions in the same substance, it can adsorb polar gases of both acid and alkali.

The adsorption capacity continues until the ionization point on the surface is saturated, but even when it is saturated, if it is lightly washed with water,
The consumption performance is recovering again.

As a result of the above experiment, it was revealed that the malodorous components such as ammonia and hydrogen sulfide are greatly reduced.

A specific example will be described in the cigarette smoke deodorization test. 4 g of the processed non-woven fabric and 4 g of the unprocessed non-woven fabric according to the present invention are set inside two desiccators each having a capacity of 2.51 and generated separately. The same amount of the smoked cigarette smoke was introduced into each desiccator, and the change in the concentration of the malodorous component in the desiccator was measured with a gas detector tube manufactured by Gastec.

Taking nicotine as an example, the residual concentration of 20 ppm is reduced to 1 ppm in about 1 minute in the processed non-woven fabric, but is 17 pp in 1 minute in the unprocessed non-woven fabric.
A large difference was observed by recording 14 ppm in 5 minutes, 13 ppm in 10 minutes, 11 ppm in 20 minutes, 9 ppm in 40 minutes, and 7 ppm in 60 minutes.

Taking an example of aldehyde, the residual concentration of 14 ppm is 8 pp in about 1 minute in the processed non-woven fabric.
m, and after 20 minutes, decreased to 5 ppm, 6
It decreased to 3ppm after 0 minutes and 1pp after 120 minutes.
m, and completely disappears after 180 minutes, but in the case of unwoven nonwoven fabric, 12 ppm in 1 minute, 10 ppm in 20 minutes, 9 ppm in 60 minutes, 7 ppm in 120 minutes.
It recorded 6 ppm in 180 minutes and 6 ppm in 240 minutes, and the residue remained after that.

Taking acetic acid as an example, 2. The residual concentration of 8 ppm is 0.5 in about 5 minutes in the processed non-woven fabric.
It decreases to ppm and disappears completely after 20 minutes, but with unwoven nonwoven fabric, 1.8 ppm, 20 minutes after 5 minutes
It recorded 1.3 ppm in minutes and 0.8 ppm in 60 minutes, and the residue remained after that.

Taking hydrogen sulfide as an example, the residual concentration of 2.8 ppm is completed in about 5 minutes in the processed non-woven fabric, but is 1.8 p in 5 minutes in the unprocessed non-woven fabric.
A large difference can be seen by recording 1.3 ppm at pm for 20 minutes and Ippm at 60 minutes.

[0025]

As is apparent from the above examples, the deodorant antibacterial nonwoven fabric of the present invention, unlike the constitution of the conventionally known technology, exhibits not only an excellent deodorizing effect and antibacterial property but also fungus resistance. We can provide a safe deodorant antibacterial non-woven fabric that also prevents generation and has no effect on the human body such as rash when used, various filter materials, deodorant mask materials, medical hygiene materials, bedding material materials, indoor interior It can now be used effectively as a material for materials.

Further, a non-woven fabric formed by the spun pond method can be used only by roll-coating an inorganic ion-adsorption type deodorant obtained by finely pulverizing amorphous silicon dioxide and amorphous zinc oxide and metathesis-mixing them. Therefore, since it can be produced by a simple production process and can be produced at low cost, it can be used as a disposable item.

The deodorant antibacterial non-woven fabric of the present invention uses an inorganic ion-adsorbing deodorant obtained by finely pulverizing amorphous silicon dioxide and amorphous zinc oxide and subjecting them to double decomposition to mix them. It has become possible to provide a safe deodorant antibacterial non-woven fabric that has no effect on the human body such as rash and has no unpleasant odor even after absorbing a bad odor and has a long-lasting effect.

Further, since the inorganic ion adsorption type deodorant is provided with both positive and negative ions in the same substance, it is easy to adsorb polar gases of both acid and alkali, and the temperature is high. It was found that there is a tendency to adsorb ammonia at a low temperature and hydrogen sulfide at a high temperature.

Further, once adsorbed, there is almost no re-emission when the temperature changes or heating up to 120 ° C.
The adsorption ability continues until the ionization point on the surface is saturated, but even when saturated, the deodorant performance is restored again by light washing with water.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D04H 13/00 D06M 11/77

Claims (2)

[Claims] 1. A non-woven fabric formed by the spun pond method is pulverized with amorphous silicon dioxide and amorphous zinc oxide,
A deodorant antibacterial non-woven fabric, which is obtained by roll-coating an inorganic ion-adsorbing deodorant mixed by double decomposition. 2. A filament group obtained by spinning a solution of an organic solvent such as polyester, polypropylene, or polyethylene from a spinning nozzle is put on an air stream by an air gun, conveyed in a guide tube together with the air stream, and then dispersed on a moving collection surface by a dispersion nozzle. The dispersed or spun filaments are vibrated in the horizontal direction and deposited on a moving collection surface that moves in a direction orthogonal to the horizontal direction to form a web, which is heat embossed, or A spun-pond nonwoven fabric made by needle punching or bonding filaments to each other is roll-coated with an inorganic ion-adsorbing deodorant that is a mixture of amorphous silicon dioxide and amorphous zinc oxide, pulverized, and mixed and decomposed. A method for producing a deodorant antibacterial non-woven fabric, comprising: