JP2015089465A - Ammonia deodorant mask - Google Patents

Abstract

[PROBLEMS] To provide a mask having a high deodorizing effect against ammonia, which is considered to be highly safe and that is considered to have a great influence on the obstruction of pregnant women. A deodorant fiber structure comprising a mask main body covering a mouth and a nose and a string to be hooked to an ear, wherein a hydroxy acid and / or a hydroxy acid derivative is fixed to a polyester fiber structure on the mask main body. Is used. It is an ammonia deodorizing mask that is highly safe, exhibits excellent deodorizing properties against ammonia, and can reduce the obstruction of pregnant women. [Selection figure] None

Description

  The present invention relates to an ammonia deodorizing mask that is excellent in ammonia deodorizing property, prevents ammonia odor when worn, and has high safety.

  In recent years, interest in deodorization has increased from the hygiene and health aspects, and many textile products having a deodorizing function have been put to practical use in the field of clothing, food and living. In general, although there is a high need for deodorizing sweat odors caused by sweating and exercise in summer, and bad odors in the nursing and medical fields, as a problem from the past, meals, rice cooking and There is a strong need for deodorizing odors such as toilet odors, and in particular, ammonia odor is currently attracting attention as one of the odors that induces evil evacuation. Masks with excellent ammonia deodorization for pregnant women Development of was desired.

  As a mask with deodorizing properties, a filter member in which titanium oxide is applied to a cloth having a filter function emits a specific wavelength from an LED illumination member from a predetermined position, thereby taking in harmful bacteria and toxic gases into the human body. An antibacterial deodorizing mask using a photocatalyst that can be prevented has been proposed (see Patent Document 1).

  Further, a ceramic having a water-repellent layer made of a nonwoven fabric having a water-repellent function, an absorption-decomposing layer made of a ceramic-containing nonwoven fabric having a deodorizing function, a collection layer having an adsorption function, and a moisture-retaining protective layer having a moisture-retaining function A mask using a containing nonwoven fabric has been proposed (see Patent Document 2).

  Furthermore, a filter for a mask using an activated carbon sheet is proposed in which an activated carbon sheet in which activated carbon is supported on a breathable sheet base material and an impregnated sheet in which a breathable sheet base material is impregnated with a moisturizing liquid are stacked. (See Patent Document 3).

Japanese Patent Publication No. 2010-017496 Japanese Patent Publication No. 2007-159796 Japanese Patent Publication No. 2011-125596

  Although the proposal of said patent document 1 decomposes | disassembles an odor component with a photocatalyst, it is difficult to decompose | disassemble most of the odor components which pass a mask with respiration instantly, and said patent document The proposals of No. 2 and Patent Document 3 adsorb the odorous components of the microporous material of ceramic and charcoal, but these proposals are also difficult to instantly adsorb the majority of the odorous components that pass through the mask. Met. Furthermore, since the mask touches the mouth and nose and directly inhales the air that has passed through the mask, a high level of safety is required. However, conventional methods use an adhesive resin to fix the deodorant component. Therefore, there are problems such as odor and peeling of the resin, and it is not suitable for a mask in terms of safety.

  Therefore, an object of the present invention is to provide an ammonia deodorizing mask that is excellent in ammonia deodorizing property, prevents ammonia odor when worn, and has high safety.

  The present invention is to solve the above problems, and the ammonia deodorizing mask of the present invention is a deodorant fiber structure in which a hydroxy acid and / or a hydroxy acid derivative is fixed to a polyester fiber structure. It is a mask formed using.

  According to a preferred aspect of the ammonia deodorizing mask of the present invention, a sheet base material having air permeability is laminated on the deodorizing fiber structure.

  According to the preferable aspect of the ammonia deodorizing mask of this invention, it is that the said sheet | seat base material which has air permeability is an electret melt blown nonwoven fabric.

  According to a preferred aspect of the ammonia deodorizing mask of the present invention, the electret meltblown nonwoven fabric is laminated on the outermost layers of the front and back, and the deodorant fiber structure is laminated on the inner layer.

  According to a preferred aspect of the ammonia deodorizing mask of the present invention, the hydroxy acid and / or hydroxy acid derivative is citric acid or a citric acid derivative.

  In recent years, it has been considered that the influence of ammonia odor contained in foods and meals is significant as an odorous component that induces obstruction in pregnant women. ADVANTAGE OF THE INVENTION According to this invention, the ammonia deodorizing mask which becomes possible to do housework or a meal comfortably by capturing ammonia odor is obtained. In addition, according to the present invention, ammonia depletion that exhibits high deodorizing properties against ammonia, which is highly safe and particularly has a great influence on the prevention of pregnant women, can be reduced. An odor mask is obtained.

  In the present invention, safety is intended for product safety. That is, since the mask directly touches the mouth, safety is required to prevent toxicity and irritation, and higher safety is particularly required when used by pregnant women.

  For example, in resin processing using an adhesive resin, there is a possibility that the resin peels off and enters the mouth, but according to the present invention, the hydroxy acid reacts with the polyester and adheres to the fabric. High safety can be obtained. Hydroxy acid is also a substance that is often found in the body. Particularly, citric acid, which is also used in food additives and supplements, has an effect of further improving safety.

  The present invention is a mask using a deodorant fiber structure in which a substance comprising a hydroxy acid and / or a hydroxy acid derivative is fixed to a polyester fiber structure, and is a highly safe and excellent ammonia deodorant. It is characterized by having performance.

  The fixing of the hydroxy acid and / or hydroxy acid derivative to the polyester fiber structure is carried out by immersing the polyester fiber structure in a hydroxy acid aqueous solution and / or a hydroxy acid salt aqueous solution, followed by heat treatment. It is considered that the hydroxy acid and / or hydroxy acid salt adhering to the substance is chemically reacted to produce a hydroxy acid derivative, thereby fixing.

  Although it is not certain with respect to the form of the chemical reaction of the hydroxy acid, the hydroxy group and the carboxyl group of the hydroxy acid react and polymerize by heating to make it hydrophobic, so that it adheres firmly to the surface of the polyester fiber with high affinity. Adhering to the polyester fiber due to reaction with either hydroxyl group, carboxyl group, or transesterification, which is partly at the end of the polyester fiber, and extremely durable It is considered a thing.

  In the fixation referred to in the present invention, when the hydrophobic polymer as described above is fixed to the surface of a polyester fiber having a high affinity, the hydroxy acid is fixed due to a reaction between a hydroxyl group and a carboxyl group present at the fiber end. In addition, the case where the hydroxy acid adheres to the fiber surface and the case where the hydroxy acid penetrates into the inside of the fiber are also included. The adhesion includes a state in which the hydroxy acid and the fiber surface are physically adhered or chemically bonded. This type of adhesion enables strong adhesion and does not use extra resin or chemicals that act as an adhesive, so there is no odor of the resin or dropping out of the resin from the textile product, and it is highly safe, so it can be used as a mask. Suitable for Moreover, durability is very high by such fixation, and the repeated use by washing is also possible.

  Examples of the hydroxy acid used in the present invention include glycolic acid, lactic acid, tartronic acid, glyceric acid, hydroxybutyric acid, malic acid, citric acid, tartaric acid, citramalic acid, isocitric acid, leucine acid, mevalonic acid, pantoic acid, ricinoleic acid, Ricinelaidic acid, cerebronic acid, quinic acid, shikimic acid, salicylic acid, creosote acid, vanillic acid, syringic acid, pyrocatechuic acid, resorcylic acid, protocatechuic acid, gentisic acid, orceric acid, gallic acid, mandelic acid, benzylic acid, atrolactin Acid, merirotic acid, furoretic acid, coumaric acid, umberic acid, caffeic acid, ferulic acid, and sinapinic acid, among others, highly safe citric acid, malic acid, and edible additives and supplements Tartaric acid is preferably used. Furthermore, citric acid is particularly preferably used because of the large number of carboxyl groups per molecule.

  The amount of the hydroxy acid derivative attached to 100 parts by mass of the polyester fiber structure is preferably 0.01 to 100 parts by mass, more preferably 0.1 to 10 parts by mass. If the adhesion amount is less than 0.01 parts by mass, sufficient deodorizing performance may not be obtained. On the other hand, if the adhesion amount exceeds 100 parts by mass, the hydroxy acid that does not adhere increases, which is undesirable in terms of cost.

  Examples of the method for immersing the polyester fiber structure in the hydroxy acid and / or hydroxy acid salt aqueous solution include general methods such as pad treatment, treatment in bath, and coating treatment. In the case of pad treatment, the polyester fiber structure is immersed in an aqueous solution of hydroxy acid and / or hydroxy acid salt, squeezed with mangle, dried, and preferably dried at a temperature of 70 to 200 ° C. for 0.1 to 30 minutes. Although heat treatment or wet heat treatment is performed, dry heat treatment is a preferable embodiment because of better adhesion.

  The dry heat treatment temperature is more preferably 100 to 190 ° C. It is preferable to perform water washing after the dry heat treatment or the wet heat treatment.

  In the case of treatment in the bath, the polyester-based fiber structure can be immersed in the aqueous solution of the hydroxy acid after dyeing with the hydroxy acid and / or hydroxy acid salt or after dyeing. It is preferable to immerse the polyester fiber structure in a hydroxy acid and / or hydroxide salt aqueous solution, and heat-treat at a temperature of preferably 100 to 140 ° C. for 5 to 60 minutes.

  In addition, after the heat treatment, it is preferable to remove excess hydroxy acid and / or hydroxy acid salt and perform washing with water in order to remove foreign matters such as dust adhering during processing. The concentration of the hydroxy acid and / or hydroxy acid salt aqueous solution may be appropriately adjusted so that the amount of the hydroxy acid derivative attached to the finally obtained fiber structure is within a preferable range. For example, the concentration is 5 g / L to 200 g. A range of about / L is preferable.

  In this way, the hydroxy acid and / or hydroxy acid derivative is fixed to the polyester fiber structure, so that a number of carboxyl groups are formed in the polyester fiber structure, and neutralized when ammonia contacts. Thus, a large amount of ammonia odor can be quickly deodorized.

  The deodorization property of ammonia is preferably a deodorization rate of 70% or more, more preferably 75% or more, as measured by a residual ammonia concentration measurement method using a gas detector tube. If the deodorization rate is less than 70%, sufficient deodorization performance cannot be obtained.

The polyester fiber structure used in the present invention only needs to be made of polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and the form of the structure includes woven fabrics, knitted fabrics and nonwoven fabrics. Can be mentioned. However, if the amount of the hydroxy acid and / or hydroxy acid derivative fixed is insufficient, the ammonia deodorizing performance is lowered. Therefore, the basis weight of the polyester fiber structure is preferably 40 g / m ² or more, more preferably 50 g. / M ² or more. Moreover, since a feeling of wear will be impaired when it is set as a mask when a fabric weight is too heavy, it is preferable that a fabric weight is 200 g / m < ² > or less, More preferably, it is 190 g / m < ² > or less. In addition, with regard to the structure of woven fabrics and knitted fabrics, it is difficult to breathe if the structure is too dense, and conversely, if the structure is too rough, ammonia passes through the mask without being deodorized, so it becomes moderately rough. It is necessary to adjust the organization. For example, a coarse double woven structure is suitable for a woven fabric, and a smooth structure of a double circular knitted structure is suitable for a circular knitting.

  In addition, for non-woven fabrics, non-woven fabrics manufactured by a wet method made from short fibers have high density and low breathability, and breathing problems and fiber dust may enter the body. From the viewpoint of safety, a non-woven fabric obtained by a spunlace method that is produced from long fibers or a melt blow method that is produced from raw material chips through a spinning process is preferred.

  The thickness of these polyester fiber structures is preferably 0.2 mm or more and 2.0 mm or less. If the thickness is less than 0.2 mm, the fabric is too thin, so there is a high possibility that the ammonia will pass through the mask without being deodorized. If the thickness exceeds 2.0 mm, the thickness is too thick and the feeling of wear is high. May cause inferiority. The thickness is more preferably 0.3 mm or more and 1.5 mm or less.

  The configuration of the ammonia deodorizing mask of the present invention comprises a mask main body part covering the nose or nose from the mouth, and a string hung on the ear. The mask main body portion needs to include at least a deodorant fiber structure in which a hydroxy acid and / or a hydroxy acid derivative is fixed to a polyester fiber structure. For example, the deodorant fiber structure It can be used by laminating using an electret melt blown nonwoven fabric of polypropylene generally used for a mask on the front side or back side or front and back of an object. Specifically, the electret melt blown nonwoven fabric can be laminated on the outermost layers of the front and back, and the deodorant fiber structure can be laminated on the inner layer to form a three-layer structure.

  Although it is difficult to define the thickness of the mask, it may be 0.2 mm or more, which is the minimum thickness of the polyester fiber structure used in the present invention, and the thickness is determined by the total with the structure such as the nonwoven fabric to be laminated. However, if it is too thick, it may cause a poor feeling of wearing or make it difficult to breathe. Therefore, it is preferably substantially 5.0 mm or less. The thickness is more preferably 0.3 mm or greater and 4.0 mm or less.

  Moreover, in the ammonia deodorizing mask of this invention, the special ultrafine fiber nonwoven fabric made from a polypropylene etc. which is excellent in the collection performance of bacteria, microparticles | fine-particles, etc. can also be laminated | stacked and / or inserted.

In the ammonia deodorizing mask of the present invention, there is no particular restriction on the string to be hooked on the ear and how to attach the string, and a rubber string or the like that can provide a good fit with less gaps as in a normal mask can be used. "
In addition to ammonia deodorization processing, post-processing such as dyeing, antibacterial processing and antifouling processing can be used in combination with the polyester fiber structure used in the present invention. However, it is necessary to pay sufficient attention to the safety of the resin by preventing carboxyl groups and inhibiting the deodorizing effect or by removing the resin.

  The ammonia deodorizing mask of the present invention is highly safe and exhibits excellent deodorizing properties especially for ammonia which is considered to have a great influence on the prevention of pregnant women.

  Next, although an Example demonstrates the detail about the ammonia deodorizing mask of this invention, this invention is not limited to these Examples. The quality evaluation in the examples is carried out by the following method.

(1) Ammonia deodorant:
A 500 ml container containing a sample cut to 10 cm × 5 cm was sealed with ammonia gas so that the initial concentration would be 300 ppm, and after standing for 20 minutes, the residual ammonia concentration was measured with a gas detector tube. At this time, the same operation was carried out without putting a sample, and the residual ammonia concentration measured was taken as the blank test concentration, and the deodorization rate (%) was determined according to the following formula. A similar test was performed on three test cloths, the average value was calculated, and one decimal place was rounded off.
Deodorization rate (%) = (1- (gas detector tube measured concentration) / (blank test concentration)) × 100
It shows that deodorizing property is so favorable that the numerical value of a deodorizing rate is large.

(2) Sensory evaluation of ammonia deodorant:
For 10 female testers, a sample cut to 10 cm × 15 cm was fixed with a paper tape so as to completely cover the nose and mouth so that no gap was left. Then, 10 ml of 2% aqueous ammonia solution was put into a petri dish with a diameter of 10 cm. Immediately after that, the smell was smelled at a position 15 cm away from the center of the petri dish at an angle of 45 ° C., and scored in the following three steps. Points were calculated.
5 points ... No smell at all.
3 points ... It smells slightly.
0 points.

  Based on this result, it was judged that 40 points or more were particularly excellent, 25 points or more and less than 40 points were good, and less than 25 points were inferior.

Example 1
As a method for manufacturing a polyester fiber structure, 84 dtex 36 filament polyethylene terephthalate fiber yarn is knitted with a smooth structure using a 28 gauge single circular knitting machine, and this is refined, dried and preset according to conventional methods. Then, it is boiled at a temperature of 130 ° C. using a liquid dyeing machine, the obtained dough is shrunk and stabilized, heat-set at a temperature of 170 ° C. again, and a circular knitted fabric with a basis weight of 125 g / m ² (polyester fiber Structure). This circular knitted fabric is dipped in a hydroxy acid aqueous solution (citric acid (anhydrous) (Nacalai Tesque Co., Ltd., Nacalai Standard Grade 1) 50 g / L), squeezed with a mangle so that the squeezing rate is 91%, and 130 ° C. After drying at a temperature of 170 ° C., the temperature was set at 170 ° C. for 1 minute, and then excess citric acid and deposits were removed by a soaping process to obtain a deodorant fiber structure having a thickness of 0.5 mm.

  As a result of conducting an ammonia deodorization test using the obtained deodorant fiber structure (mask main body), the deodorization rate was 84%, and an excellent result of 46 points in sensory evaluation was obtained.

(Example 2)
The deodorant fiber structure having a thickness of 0.5 mm obtained in Example 1 was used as an inner layer, and an outer layer of the deodorant fiber structure having a thickness of 0.5 mm in polypropylene electret meltblown nonwoven fabric (20 g / m ² ) were laminated, and a mask main body (deodorant fiber structure) composed of a total of three layers was prepared and subjected to sensory evaluation of ammonia deodorant. As a result, 46 points were excellent as in Example 1. The result was obtained, and the touch feeling on the surface in contact with the skin was evaluated to be the same as a normal mask.

(Example 3)
In the three-layer mask body obtained in Example 2, “Tremmicron” (registered trademark) having a thickness of 0.3 mm between the nonwoven fabric on the back surface and the deodorant fiber structure (Denishi nonwoven fabric: manufactured by Toray Fine Chemical Co., Ltd.) (20 g / m ² ) was inserted to create a mask body consisting of a total of 4 layers. As a result, the sensory evaluation result was 50 points, and the touch feeling on the surface was the same as a normal mask. .

Example 4
In Example 1, processing was carried out in the same manner as in Example 1 except that malic acid (Nacalai Tesque Co., Ltd., Nacalai Standard Grade 1) 100 g / L was used as the hydroxy acid instead of citric acid. An odorous fiber structure was obtained. As a result of conducting an ammonia deodorization test using the obtained deodorant fiber structure (mask main body), the deodorization rate was 78%, and an excellent result of 40 points was obtained in sensory evaluation.

(Comparative Example 1)
The circular knitted fabric (polyester fiber structure) with a basis weight of 125 g / m ² prepared in Example 1 was subjected to an ammonia deodorizing test without performing a deodorizing process using a hydroxy acid aqueous solution. As a result, the deodorization rate was 26%, and the sensory evaluation was inferior to 6 points.

(Comparative Example 2)
Instead of the hydroxy acid aqueous solution, a porous silicate (“Lionite” manufactured by Lion Corporation) (registered trademark) was used instead of the hydroxy acid aqueous solution in the circular knitted fabric (polyester fiber structure) having a basis weight of 125 g / m ² prepared in Example 1. SF, 10 g / L) and acrylic resin (“Light Epoch” (registered trademark) T-23M, 30 g / L, manufactured by Hokko Chemical Co., Ltd.) was used except that an aqueous solution was used. Carried out. The adhesion amount of the porous ceramics was 5 g / m ² , the deodorization rate was 65%, and the sensory evaluation was inferior at 12 points.

Claims (5)

  An ammonia deodorizing mask comprising a deodorant fiber structure in which a hydroxy acid and / or a hydroxy acid derivative is fixed to a polyester fiber structure.   The ammonia deodorizing mask according to claim 1, wherein a sheet base material having air permeability is laminated on the deodorizing fiber structure.   The ammonia deodorizing mask according to claim 2, wherein the sheet base material having air permeability is an electret melt blown nonwoven fabric.   The ammonia deodorizing mask according to any one of claims 1 to 3, wherein the electret meltblown nonwoven fabric is laminated on the outermost layers of the front and back surfaces and the deodorizing fiber structure is laminated on the inner layer.   The ammonia deodorizing mask according to any one of claims 1 to 4, wherein the hydroxy acid and / or the hydroxy acid derivative is citric acid or a citric acid derivative.