KR102317793B1 - Protective clothing with enhanced antistatic function - Google Patents

Abstract

The present invention relates to protective clothing which comprises laminated fabric of a triple structure to block introduction of external materials, facilitate emission of inside moisture such as sweat, and have an improved deodorizing function at the same time; and a method for manufacturing the same.

Description

PROTECTIVE CLOTHING WITH ENHANCED ANTISTATIC FUNCTION

The present invention relates to a protective clothing with improved deodorization function while blocking the inflow of external substances, including a laminated fabric having a triple structure, while facilitating the release of moisture such as sweat from the inside, and a method for manufacturing the same.

Protective clothing includes various types of fine dust and chemicals generated in industrial sites such as laboratories, laboratories, chemical plants, waste treatment plants, and pharmaceutical manufacturing facilities, medical facilities such as hospitals, government and local government infectious disease response and quarantine stations, scientific investigation teams and firefighting workshops, etc. It is used to protect the wearer from harmful substances such as water, chemicals, microorganisms, bacteria, and viruses.

In laboratories, laboratories, factories, etc., hazardous substances generated from the outside must not flow into the protective clothing, and at the same time, it is essential to create a comfortable working environment for moisture generated from the wearer's body to be released to the outside. It is essential for the convenience of the wearer to prevent odors caused by various organic substances.

In factories accommodating many workers or farmhouses accommodating a large amount of livestock, sweat may be secreted a lot due to hard work, and odors may be generated in work clothes. If this is not the case, an environment in which odor-generating microorganisms can more easily reproduce may be created, and there is a problem that may be transformed into a more severe odor.

Therefore, in order to create a comfortable working environment for the wearer, as a function of the protective clothing itself, the inflow of external substances is prevented to protect the wearer, while the internal moisture is smoothly discharged, and the internal odor-causing substances are decomposed or released to deodorize. There is a need for protective clothing with a function.

In addition, when the wearer puts on and takes off the protective suit, there is a risk of coming into contact with external hazards or contaminants. It is important to prevent the generation of static electricity on the surface of the hazmat suit, since fine dust adhering to the hazmat suit may contaminate the clean room.

Moreover, depending on the environment, there is a possibility that various dangerous accidents may occur due to static electricity, so it is necessary to prevent the generation of static electricity.

Therefore, as a basic function of the protective suit, it is necessary to develop a protective suit having an excellent deodorizing function and an antistatic function while efficiently blocking the inflow of external substances.

Republic of Korea Patent No. 2146779 (2020.08.24) Republic of Korea Registered Utility Model No. 0412582 (2006.03.29)

An object of the present invention is to provide a protective suit having a deodorizing function while maintaining the performance of preventing penetration of external substances such as chemicals and viruses.

Another object of the present invention is to provide a protective suit with an improved deodorizing function capable of decomposing odor-causing particles generated inside while preventing liquid and gaseous chemicals from penetrating into the interior.

Another object of the present invention is to provide a protective suit suitable for use in an environment exposed to dust, a clean room, etc. having antistatic properties.

The protective clothing according to the present invention for solving the above problems includes a porous film, a compressed cotton, and a nonwoven fabric, and the compressed cotton includes a kenaf fiber.

In the present invention, the porous film may be a polyethylene and calcium carbonate composite film, and the nonwoven fabric may include polypropylene, titanium dioxide and zinc stearic acid.

In the present invention, the kenaf fiber may be immersed in a mixture containing sodium alginate, pectin and menthol.

More specifically, the mixture comprises 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and the balance of distilled water, based on the total weight of the solution, and the kenaf fiber comprises the After being immersed in the mixture for 10 to 20 minutes, it may be dried for 12 to 20 hours.

In the present invention, the porous film may contain 1 to 5 parts by weight of calcium carbonate based on 100 parts by weight of polyethylene.

In the present invention, the porous film may include pores having an average diameter of 0.1 to 100 μm (micrometer).

The manufacturing method of the protective clothing according to the present invention comprises the steps of producing a melt blown polypropylene nonwoven fabric by spinning, laminating a compressed cotton on the top of the nonwoven fabric, laminating a porous film on the compressed cotton, and then thermocompressing the laminated fabric and manufacturing a protective suit by cutting the thermocompression-bonded laminated fabric.

More specifically, the compressed cotton includes kenaf fibers, and the kenaf fibers include 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and After being immersed in a mixture containing the remaining amount of distilled water for 10 to 20 minutes, it may be dried for 12 to 20 hours.

The protective rod according to the present invention has a deodorizing function while blocking the inflow of substances of various external properties, and can discharge internal moisture such as sweat in the form of water vapor, thereby providing a protective clothing that can be worn comfortably while protecting the wearer safely. .

The present invention also has the effect that, as static electricity is effectively prevented, contaminants are not easily attached to the surface of the protective clothing after use, and various safety accidents that may occur during use can be effectively prevented.

1 is a vertical cross-sectional view of a laminated fabric of a protective suit according to the present invention;
2 is a graph showing the deodorizing effect (ammonia concentration change rate) of the protective clothing according to the present invention.
Figure 3 is a graph showing the moisture discharge effect (chamber humidity change rate) of the protective clothing according to the present invention.

Hereinafter, each configuration of the present invention will be described in more detail so that those of ordinary skill in the art to which the present invention pertains can easily carry out, but this is only an example, and the scope of the present invention is defined by the following contents not limited.

The protective clothing according to the present invention includes a laminated fabric including a porous film, a compressed cotton, and a nonwoven fabric.

Since the protective suit is basically for the purpose of protecting the wearer from external substances, it includes a film of a polymer material on the surface to block external substances, and has a function of facilitating the discharge of internal moisture including micropores. something is needed

In particular, when moisture such as sweat generated from the wearer's body is maintained in an enclosed space, it may react with organic substances and secretions generated from the wearer's body to generate a bad odor. In particular, microorganisms present on the body surface, There is a problem in that the odor is formed by mold.

The present invention provides a protective suit with an improved deodorizing function while preventing the blocking of external substances as a basic function of the protective suit.

Specifically, the protective clothing according to the present invention is characterized in that the compressed cotton contains kenaf fibers impregnated with a mixed solution to improve the deodorizing function.

The mixed solution is a mixture obtained by dissolving sodium alginate, pectin and menthol in water, and is prepared as a solution having a low viscosity.

Kenaf fiber is an annual plant of the genus Hibiscus cannabinus belonging to the Malvaceae family, and is a tropical plant native to India or Africa.

When it grows for about 4-6 months, it grows to 3-4m at a fast growth rate. The stem is about 10cm thick and the flowers are similar to hollyhocks. The cross section of the stem is round, and the fibers of the stem are used to make nets, paper, and cloth. Because the fiber is similar to jute, it is also called bombay hemp or sheep hemp.

More specifically, the mixture comprises 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and the balance of distilled water, based on the total weight of the solution, and the kenaf fiber comprises the After being immersed in the mixture for 10 to 20 minutes, it can be prepared by drying for 12 to 20 hours.

More preferably, the sodium alginate may include 11 to 14% by weight. When the content of sodium alginate is excessive than the above content, the viscosity of the mixture increases, and the impregnation rate into the kenaf fiber is greatly reduced, and accordingly, there is a problem that the deodorizing effect is insignificant, and the content of sodium alginate is higher than the content In the case of a small amount, there is a problem in that the adhesion between each layer of the laminated film is lowered, and thus the wearing comfort is reduced.

In the case of the pectin, preferably, it may contain 5 to 7 parts by weight, and when it is added in excess of the above content, the viscosity of the mixture increases and the impregnation rate of the kenaf fiber is not high, because of this. There is a problem that the deodorization effect is insignificant. When it is added in a smaller amount than the above content, the amount of moisture or odor-causing organic substances, secretions, etc., absorbed by the compressed cotton increases, so that there is a problem in that the protective clothing has a bad smell and the deodorization effect is lowered.

The menthol component is intended to further improve the deodorizing effect, and when menthol is added in an appropriate amount in a state where water discharge is smooth, there is an advantage in that the deodorizing effect is further improved.

The menthol is preferably included in an amount of 2 to 4 wt%, based on the total weight of the mixture.

When the content of menthol is excessive, when the external amount of moisture is small, there is a problem of reacting with organic substances and microorganisms to aggravate the odor, and when the content is smaller than the above content, there is a slight problem of improving the deodorizing effect.

On the other hand, the upper portion of the compressed cotton, that is, the upper portion exposed to the outside includes a porous film. The porous film is composed of a polyethylene and calcium carbonate composite film.

More specifically, based on 100 parts by weight of polyethylene, 80 to 120 parts by weight of calcium carbonate may be included. More preferably, 90 to 110 parts by weight of calcium carbonate is added.

When added in an excess of the above content, when forming a porous film, there is a problem in that the flexibility of the film is deteriorated, and pores of the porous film are difficult to be uniformly formed.

The porous film includes pores having an average diameter of 0.1 to 100 μm (micrometer). Preferably, it may include pores of 10 to 80 μm (micrometer), and in order to prevent the inflow of external droplets or fine powder while smoothing the discharge of water molecules and fine organic substances, the size of the above range is set. It is preferable to have pores with

The present invention also provides a method for manufacturing the above-described protective clothing.

Specifically, the manufacturing method of the protective clothing according to the present invention comprises the steps of producing a melt-blown polypropylene nonwoven fabric by spinning, laminating a compressed cotton on top of the nonwoven fabric, laminating a porous film on top of the compressed cotton, and then thermocompression bonding To prepare a laminated fabric and cutting the thermocompression-bonded laminated fabric to manufacture a protective suit.

More specifically, as described above, the compressed cotton comprises kenaf fibers,

The kenaf fiber is immersed in a mixture containing 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and the remaining amount of distilled water based on the total weight of the solution for 10 to 20 minutes, It may be dried for 12 to 20 hours.

In particular, the step of producing a laminated fabric by thermocompression bonding is manufactured by applying a temperature of 80 to 120° C. and thermocompression bonding with a press. The prepared laminated film is dried to room temperature, cut and then sewn to make a protective suit.

Hereinafter, the present invention will be described in more detail based on examples, but this is only for understanding the present invention, and the content of the present invention is not limited thereto.

[Production Example]

A protective clothing fabric was prepared as follows.

Titanium dioxide (CAS No. 13463-67-7) and zinc stearic acid (CAS No. 557-05-1) were mixed in a volume ratio of 1:1 in 100 parts by weight of polypropylene (CAS No. 9003-07-0) 2 parts by weight of one powder was dispersed, and a nonwoven fabric was prepared using a melt blown spinning device.

Compressed cotton is immersed in a mixture containing sodium alginate, pectin, menthol and the remaining amount of distilled water according to Table 1 for 15 minutes, then taken out and dried for 18 hours for visible or palpable moisture. dried without.

A hybrid composite film comprising 100 parts by weight of polyethylene and 100 parts by weight of calcium carbonate was prepared. It was confirmed that the composite film contained pores having an average diameter of 35 μm (micrometer).

A nonwoven fabric, a compressed cotton, and a composite film were sequentially laminated, followed by thermocompression bonding to prepare a triple laminated fabric.

(Unit: % by weight) Example comparative example One 2 3 One 2 3 4 5 6 Sodium Alginate 12 13 12 16 8 12 12 13 13 pectin 6 6 7 6 6 9 4 6 6 menthol 3 3 3 3 3 3 3 6 - water remaining amount

[Experimental example]

1. Deodorization performance evaluation

Prepare an Erlenmeyer flask (500 ml) filled with ammonia gas, cover the inlet with each fabric specimen, and put it in a chamber with a size of ^{50*50*50 cm 3} time was left. The change in the concentration of ammonia gas in the flask before and after the experiment was measured and shown in Table 2 and FIG. 2 .

At this time, each specimen was configured such that the outer surface, that is, the composite film layer, was located on the outside of the flask, and the nonwoven surface was in contact with the inlet of the flask.

2. Water release evaluation

범위의 온도를 유지하며 12시간을 방치한 전과 후의 습도 변화를 측정하여 표 2 및 도 3에 나타냈다.Under the same conditions as in 1. above, after filling the Erlenmeyer flask with about 1/4 of distilled water instead of the ammonia gas, 30~50

The humidity change before and after leaving the temperature for 12 hours while maintaining the temperature range was measured and shown in Table 2 and FIG. 3 .

3. Fit evaluation

After manufacturing two sets of protective clothing using the laminated fabric according to the above Examples and Comparative Examples, protective clothing was arbitrarily provided to 90 males in their 30s and 40s.

The experiment was conducted according to a double-blind method, and it was recommended that each wearer wear a protective suit for 10 hours and wear two sets of protective clothing on different random days. After wearing it, work was carried out in the chemical laboratory.

After wearing, i) fit and ii) deodorization evaluation was performed for each wearer. The score for each item was evaluated on a scale of 1 (bad) to 10 (good), and the test was conducted, and the results are shown in Table 2.

4. Assessment of protective function of hazmat suit

After manufacturing a protective suit using the laminated fabric according to Example 1, the antiviral protection function (EN-14126), liquid penetration resistance (EN 14605), and anti-static test (EN-1149-1) were conducted at the Korea Institute of Clothing. proceeded.

As a result, the functionality was demonstrated in all evaluations, and it was evaluated as suitable.

division Example comparative example One 2 3 One 2 3 4 5 6 Change rate of ammonia concentration inside flask (%) -67 -59 -65 -34 -30 -28 -40 -39 -26 Change rate of ammonia concentration inside the chamber (%) +2 +4 +3 +15 +12 +13 +9 +11 +10 Chamber Humidity Change (%) +35 +30 +32 +5 +9 +5 +8 +8 +9 fit 9 8 7 7 5 6 5 5 8 Deodorization evaluation 8 7 8 3 4 4 2 4 3

Referring to Table 2, in the case of Example 1, the ammonia concentration in the flask assumed as the internal environment of the protective suit was significantly reduced, and it can be seen that the deodorization performance is excellent.

In particular, it can be seen that most of the reduced ammonia gas is decomposed or removed as the ammonia concentration in the chamber is very slightly increased. This is due to the fact that the odor-causing component was removed and collected by the triple laminated fabric in the protective suit, considering that it received an excellent score in the deodorization evaluation through the blind test and that the protective suit itself did not emit a particularly unpleasant odor as other opinions. predictable.

Similarly, in the case of Examples 2 and 3, it can be confirmed that the wearing comfort is excellent, and the deodorization effect and the water discharge effect are excellent.

On the other hand, in the case of the comparative example, it was confirmed that the change in the concentration of ammonia gas inside the flask was not large compared to the example, and it can be seen that the deodorizing effect was insignificant.

In Comparative Examples 1 and 3, the viscosity of the mixture was rather high in Examples and other Comparative Examples, so there was a problem that the impregnation rate of the kenaf fiber was not high.

The rather high ammonia concentration in the chamber is estimated to be due to the insignificant decomposition and collection of ammonia gas by the laminated fabric.

In the case of Comparative Example 4, while the ammonia concentration inside the flask was greatly reduced, the increase rate of the ammonia concentration inside the chamber was not large, which was predicted to be due to the large increase in the amount absorbed by the laminated fabric of the protective suit.

This is a result that matches the result of receiving the lowest score in the wearer's deodorization evaluation, and as another opinion of the wearer, there was an opinion that it was evaluated as having little deodorizing effect due to the odor of the protective suit itself after wearing, and it is easy to discharge moisture to the outside There was an opinion that the wearing comfort was significantly lowered.

In the case of Comparative Example 5, as menthol, which can improve the effect, was added in an excessive amount compared to the case of using it together with a paper fabric having deodorizing performance, it was rather mixed with the malodorous component, and it was confirmed that the deodorizing effect was significantly reduced.

This is a result with no significant difference in terms of the effect even when compared with Comparative Example 6 in which menthol was not added at all.

On the other hand, it was confirmed that the protective suit of Example 1 was excellent in the above-described deodorizing effect and water discharge performance, and excellent in antiviral function, liquid penetration prevention function, and antistatic function.

Claims (8)

As a protective clothing in which a nonwoven fabric, a compressed cotton, and a porous film are sequentially laminated,
The compressed cotton contains kenaf fibers,
The kenaf fibers are immersed in a mixture containing sodium alginate, pectin and menthol for 10 to 20 minutes, and then dried for 12 to 20 hours,
The mixture, based on the total weight of the solution, 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and the remaining amount of distilled water, protective clothing.
According to claim 1,
The porous film is a polyethylene and calcium carbonate composite film,
The nonwoven fabric is protective clothing comprising polypropylene, titanium dioxide and zinc stearic acid.
delete delete According to claim 1,
The porous film is protective clothing comprising 80 to 120 parts by weight of calcium carbonate based on 100 parts by weight of polyethylene.
According to claim 1,
The porous film is protective clothing comprising pores having an average diameter of 0.1 to 100 μm (micrometer).
spinning to prepare a melt-blown polypropylene nonwoven fabric;
Laminating a compressed cotton on the top of the nonwoven fabric, laminating a porous film on top of the compressed cotton, and then thermocompression bonding to prepare a laminated fabric; and
manufacturing a protective suit by cutting the thermocompression-bonded laminated fabric;
A method of manufacturing a protective clothing comprising:
The compressed cotton contains kenaf fibers,
The kenaf fiber is immersed in a mixture containing 10 to 15% by weight of sodium alginate, 5 to 8% by weight of pectin, 0.5 to 5% by weight of menthol, and the remaining amount of distilled water based on the total weight of the solution for 10 to 20 minutes, A method of manufacturing a protective clothing that is dried for 12 to 20 hours.
delete

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