KR20200030332A - mask - Google Patents

Abstract

The present invention can provide a mask having excellent UV blocking effect and/or antibacterial effect which enables washing and long-term use by improving the durability of the mask by using polyurethane, alleviates the feeling of wearing such as difficulty in breathing by forming a hole in an outer layer, and uses a material having an excellent UV blocking or/and antibacterial function as an inner layer.

Description

Mask {mask}

The present invention relates to a mask that is easy to breathe even when worn for a long time, and has improved antibacterial and durable properties.

Masks are objects that cover the nose and mouth to prevent inhalation of germs and dust due to hygiene. Masks have been in use since the 1919 Spanish cold, or influenza, epidemic. Currently, face masks are made of cotton, non-woven fabric, and paper.

In modern society, air pollution is becoming serious due to global warming and soot. Fine dust, yellow dust, and smog mixed with harmful substances such as heavy metals caused by industrialization in China have been recognized as a major cause of deteriorating respiratory and bronchial health.

Therefore, a mask is widely used as a means for protecting the atmosphere. However, conventional masks have a number of non-washable or filter-incorporated masks that cannot be cleaned, and have a disadvantage in that they wear less, such as irritating the skin or having difficulty breathing when worn for a long time. Therefore, a mask made of a material having no skin irritation is harmless to the skin or respiratory system even when worn for a long time, and there is a need to develop a mask that is easy to breathe and washable.

Republic of Korea Patent Publication No. 10-2011-0003358

The problem to be solved of the present invention is to provide a mask having excellent antibacterial properties, excellent durability, and easy breathing even when worn for a long time.

The mask according to an embodiment of the present invention includes an outer skin layer formed of polyurethane including a hole having a diameter of 0.2 to 1.5 mm and an inner skin layer formed on the outer skin layer.

The hole may be formed in the ring portion or the body.

The air permeability of the endothelial layer may be excellent.

The endothelial layer is made of a microporous material, and the density of the microporous material may be 0.10 g / cm 3 to 0.30 g / cm 3.

Based on 100 parts by weight of the entire endothelial layer, polyurethane may contain 98 to 99.9, and a mixed composition of silicon, titanium dioxide, or zinc pyrithione may be included in an amount of 0.1 to 2.

The endothelial layer may have a UV blocking efficiency of 95 to 100%.

The endothelial layer includes a functional fiber having an antibacterial deodorizing function, and short fibers, and the functional fiber may be formed of an antibacterial deodorizing functional spun yarn containing 0.6 to 4% by weight of copper sulfide based on the total weight of the functional fiber. .

The functional spun yarn may include the functional fiber and the short fiber in a ratio of 1: 9 to 5: 5.

It may further include an adhesive layer formed between the outer layer and the inner layer.

Tensile strength of the ring portion of the mask may be 1 to 5㎏f / ㎟.

The outer layer may have an air permeability of 30 to 280 cfm.

The present invention improves the durability of the mask by using polyurethane, enables washing and long-term use, and improves the fit, such as difficulty in breathing by forming a hole in the outer layer, and has excellent UV-blocking and / or antibacterial function as an inner layer. By using a material, it is possible to provide a mask having excellent UV blocking effect and / or antibacterial effect.

1 is a perspective view of a mask according to an embodiment of the present invention. Specifically, a represents the front side of the mask, and b represents the rear side of the mask.
FIG. 2 is a front view of the mask of FIG. 1.
3 is a cross-sectional view taken along line III-III of the mask shown in FIG. 2;
4 is a cross-sectional view of a mask according to another embodiment of the present invention.
5 is a perspective view of a mask according to another embodiment of the present invention.
6 is a photomicrograph of a porous polyurethane foam.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The same reference numerals are used for similar parts throughout the specification.

The mask of the present invention may have a conventional design, and the mask is washable and reusable.

1 is a perspective view of a mask according to an embodiment of the present invention, and FIG. 2 is a front view of a mask according to an embodiment of the present invention.

The mask according to the embodiment of the present invention will be described in detail with reference to these drawings.

1 to 2, the mask 10 according to an embodiment of the present invention is the size of the main body 13 covering the wearer's nose, mouth, most of the chin and part of the cheek, or any desired portion thereof Can have

The mask body 13 is formed by protruding the front surface 11 and recessing the rear surface 12. Therefore, the nose and mouth may not come into contact with the rear face 12 when worn. However, the shape of the mask body 13 is not limited thereto, and may have various shapes suitable for the face, and may be formed in a normal shape.

It extends on both sides of the mask body 13 and can be formed with hooks 14 for hanging on both ears when in use. The hook portion 14 has elasticity and fixes the mask body 13 to the wearer's face.

In addition, a ring portion 14 that is separately coupled to the mask body 13 may be formed.

Ring portion 14 according to an embodiment of the present invention has a tensile strength of 1 to 5㎏f / ㎟.

A hole is formed in the front face 11 of the mask. The hole may be formed in a constant pattern on the front surface 11. The hole may be formed by being distributed over the entire surface 11, and may be formed at regular intervals. Specifically, it may be formed in a dot pattern, but is not limited thereto.

The larger the diameter of the hole, the more the number of holes per unit area increases, the air permeability or elasticity increases, but the strength decreases.

The hole may be formed on the front surface of the body 13 or the hook 14 of the mask.

The diameter of the holes formed in the body 13 or the number of holes per unit area may be the same as the diameter of the holes formed in the ring portion 14 or the number of holes per unit area.

In addition, the diameter of the hole in the main body 13 or the number of holes per unit area may be different from the diameter of the hole formed in the ring 14 or the number of holes per unit area. Specifically, in order to increase the air permeability of the main body 13, the diameter of the hole on the main body 13 or the number of holes per unit area can be increased.

In addition, the diameter of the hole or the number of holes per unit area may be reduced or the hole may be omitted to increase the strength of the hook portion 14. Therefore, the elasticity of the main body 13 is good and the air permeability is excellent, so that breathing is easy, and the strength of the ring portion 14 is increased to provide excellent durability.

3 is a cross-sectional view taken along line III-III of FIG. 2. Referring to FIG. 3, the mask 10 according to an embodiment of the present invention includes an outer layer 100 and an inner layer 200.

The outer layer 100 forms the front face 11 away from the wearer's face when the mask is worn, and the inner layer 200 forms the rear face 12 facing the wearer's face when the mask is worn.

The outer layer 100 is formed of polyurethane. Polyurethane has a tough and chemical-resistant property. It is also excellent in elasticity.

Therefore, it can be worn in close contact with the wearer's face shape, and is excellent in durability for washing and long-term use.

The outer layer 100 is formed with holes 101 having a diameter to a width of 0.2 mm to 1.5 mm. The hole 101 can be formed with an appropriate pattern as described above.

Through the hole, air flows in during inhalation and air sucked in during exhalation. If it is less than 0.2 mm, the intake resistance is high and breathing is uncomfortable, and if it is more than 1.5 mm, airborne dust cannot be blocked.

The outer layer 100 has an air permeability of 30 to 280 cfm. If the air permeability is less than 30cfm, breathing is uncomfortable due to high intake resistance, and if the air permeability exceeds 280cfm, floating dust cannot be blocked. Therefore, the mask of the present invention is excellent in air permeability, and smooth inflow of air upon inhalation as well as smooth discharge of air inhaled during exhalation enables normal breathing activity and excellent wearing comfort even when worn for a long time.

The inner skin layer 200 is formed on the outer skin layer 100, filters air that is transmitted through the outer skin layer 100, and blocks dust and harmful substances in the air sucked by the wearer.

The endothelial layer 200 may be manufactured using a microporous material. In the microporous material, pores having a predetermined diameter are formed. If the pore diameter is less than a certain value, air permeability is low and breathing is difficult. If the pore diameter is more than a certain value, the blocking efficiency of dust is reduced.

The density of the microporous material is 0.10 g / cm 3 to 0.30 g / cm 3.

When the density is less than 0.10 g / cm 3, the number or size of pores increases, and thus the blocking effect of fine dust decreases. When the density exceeds 0.30 g / cm 3, the air permeability may decrease because the number or size of pores decreases.

The microporous material of the present invention is preferably in the form of an open cell, since the closed cell does not communicate with the pores and thus has poor air permeability.

The microporous material is any one or more selected from the group consisting of polyolefin, polyamide, polyester, poly sulfone, polyether, acrylic polymer, methacrylic polymer, polystyrene, polyurethane, polypropylene, polyethylene and cellulose polymer. It includes. The microporous material specifically includes polyurethane, and more specifically, may be a polyurethane foam.

The endothelial layer 200 includes 98 to 99.9 of polyurethane based on 100 parts by weight of the total weight, and may include 0.1 to 2 of a mixed composition of silicon, titanium dioxide, or zinc pyrithione.

Silicone is harmless to the human body, has excellent weather resistance, and has excellent elasticity and wear resistance. Therefore, the endothelial layer 200 containing silicon is excellent in weather resistance and abrasion resistance, and has excellent elasticity. The mask 10 of the present invention has a long service life and can be worn to be in close contact, so that fine dust blocking is excellent.

Titanium dioxide is used as an antibacterial agent, odor removal and sterilizing agent. In addition, it has excellent UV blocking effect. Therefore, the endothelial layer 200 containing titanium dioxide has excellent antibacterial and deodorizing effects, and has a UV blocking effect. The mask of the present invention has excellent antibacterial, deodorizing or UV blocking effects.

Zinc pyrithione is known to have an antibacterial effect. Therefore, since the inner layer 200 containing zinc pyrithione has an antibacterial effect, the mask of the present invention has an excellent antibacterial effect.

In another embodiment of the present invention, the endothelial layer 200 may be manufactured using a fabric or knitted fabric formed of an antibacterial deodorizing functional spun yarn.

The antimicrobial deodorizing functional spun yarn includes functional fibers having an antibacterial deodorizing function, and short fibers.

The short fiber, natural fiber or synthetic fiber may be selected.

The natural fiber may be any one selected from cotton, hemp, wool, silk, and combinations thereof.

The synthetic fiber, polyamide (polyamide, Polyamid), polyester (polyester), polypropylene (polypropylene), rayon (rayon), aramid (aramid fiber), polyethylene (polyethylene), polyvinyl alcohol (polyvinyl alcohol), poly It may be any one selected from the group consisting of urethane (polyurethane) and combinations thereof.

The functional fiber includes a master batch chip including a thermoplastic resin and a functional compound, and a virgin chip made of a thermoplastic resin.

The master batch chip may further include a dispersant in addition to the thermoplastic resin and the functional compound. That is, the master batch chip is prepared by mixing a thermoplastic resin, a functional compound, and a dispersant.

The thermoplastic resin may be at least one selected from nylon, polyethylene terephthalate (PET), polypropylene (PP), and polyethylene (PE). Preferably, the thermoplastic resin may be nylon, which is thinner than spider webs, resistant to friction, and has superior tensile strength to other fibers.

The functional compound is a compound having an antibacterial effect. The functional compound may be copper sulfide (CuS), which is a compound of sulfur and copper. Among the functional compounds, copper sulfide, copper (Cu) has strong antibacterial performance. Thus, Staphylococcus aureus, pneumococcal bacteria, such as general bacteria and methicillin-resistant Staphylococcus aureus (methicillin-resistant Staphylococcus aureus infection; MRSA), Salmonella and other pathogens, as well as fungi and fungi, which are fungi. Bacteria, viruses, and fungi can be removed by using copper's excellent antibacterial performance.

The functional compound composed of copper sulfide has a particle size and particle size distribution modified to an appropriate size. The functional compound modification is pulverized to a target particle size using a wet and dry mill, and the particle size capable of spinning is sorted. Functional compounds with a large particle size are subjected to a grinding process again.

The average particle size of the functional compound through modification may be 0.5 to 1.5 μm. When the size of the fine particles of the functional compound exceeds 2 μm, there is a risk of the filament being shrunk during spinning. If the functional compound fine particle size is less than 0.5 μm, control may occur during the milling process. The average particle size of the functional compound may be 1 μm. The smaller the size of the compound fine particles, the more the spinning efficiency can be improved.

The dispersant may be any one selected from anionic surfactants, cationic surfactants and nonionic surfactants.

The master batch chip may include 5 to 25% by weight of the functional compound based on the total weight of the master batch chip including the thermoplastic resin, the functional compound, and the dispersant. If the functional compound is less than 5% by weight relative to the total weight of the master batch chip, the cost of manufacturing the master batch chip may be borne, and if it exceeds 25% by weight, it is difficult to manufacture the master batch chip due to difficulty in dispersing the functional compound.

The functional fibers and short fibers may be blended in a ratio of 1: 9 to 5: 5. If the blend ratio is less than 1: 9, the performance efficiency of the antibacterial deodorant functional spun yarn may be deteriorated, and if it exceeds 5: 5, the production cost may increase due to the increase in the use of functional fibers.

Since the functional fibers are evenly distributed and distributed in the antibacterial deodorizing functional spun yarn, the antibacterial / deodorizing performance over the entire area can be sufficiently expressed. In addition, since the functional compound is located inside the functional fiber, the antibacterial deodorizing functional fabric woven or knitted with an antibacterial deodorizing functional spun yarn does not lose its function in heat, base, or acid conditions by dyeing or post-processing, and has an antibacterial deodorizing function in the finished mask. Can be maintained.

In another embodiment of the present invention, as shown in Figure 4 further comprises an adhesive layer 300 between the outer layer 100 and the inner layer 200.

The adhesive layer 300 may be applied to the desired region of the outer layer 100 or the inner layer 200 by spraying, napping, roller coating, or other means in the art suitable for adhesive application. The thickness of the adhesive layer 300 is preferably applied to have a thickness that is hardly measured. Typically, the adhesive layer 300 is applied in a suitable pattern, for example, a dot pattern, to avoid completely blocking pores present in the outer layer or the inner layer, and to minimize interference with air flow through the mask.

When applied below a certain value of the adhesive layer, the adhesive effect is poor and the durability is poor, and when applied above a certain value, the air permeability decreases due to clogging of holes or pores present in the outer layer or the inner layer.

4 is a perspective view of a mask 10 according to another embodiment of the present invention. Referring to FIG. 4, the mask 10 further includes a filter 20.

The filter 20 is disposed on the rear surface 12 and blocks fine dust.

The filter 20 can be sized to cover most of the wearer's nose, mouth, chin, and part of the cheek, or any desired portion thereof.

The filter 20 is replaceable and can be specifically disposable.

The filter 20 may be formed of a non-woven fabric. It may also be formed of two or more layers.

The nonwoven fabric may be electrostatic treated.

<Example 1> Preparation of the outer layer

Polyurethane (CAS 9009-54-5) was purchased from Daewon Hwasung under the product name Puff skin to prepare an outer layer.

Example 1-1

The outer layer had a hole diameter of 0.2 mm.

Example 1-2

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 0.5 mm.

Example 1-3

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 0.8 mm.

Example 1-4

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 1.1 mm.

Example 1-5

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 1.5 mm.

Comparative Example 1-1

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 0.1 mm.

Comparative Example 1-2

An outer layer was prepared in the same manner as in Example 1-1, except that the hole diameter in Example 1-1 was 1.8 mm.

<Example 2> Endothelial layer prepared 1

The endothelial layer was made of polyurethane foam, a microporous material. Polyurethane foam (product name: KFM0519 Beige) was purchased from KOMSTSU SEIREN CO., LTD in Japan.

<Example 3> Preparation of endothelial layer 2

Circular Knit was fabricated from a single fiber blend consisting of functional fibers and cotton with antibacterial and deodorizing functions. The functional fiber was prepared by mixing nylon, copper sulfide and dispersant.

The functional fibers were prepared with different contents as shown in Table 1.

Sample number Content ratio Cotton yarn (% by weight) CuS functional fiber (% by weight) Example 3-1 95 5 Example 3-2 90 10 Example 3-3 80 20 Example 3-4 70 30 Comparative Example 3-1 100 0

<Example 4> Preparation of mask

A mask was prepared using the outer layer of Example 1-3, the inner layer of Example 2, and the adhesive.

<Experimental Example 1> Analysis of the outer layer

Air permeability analysis

The air permeability of the outer layer of Example 1 and Comparative Example 1 was analyzed using an air permeability tester under the conditions of KS K IOS 9237. The specimen of 20 cm 2 was evaluated for air permeability and degree of dust filtration under 100 MPa static pressure. Table 2 shows the measurement results.

sample Air permeability Dust filtration degree Example 1-1 good good Example 1-2 good good Example 1-3 good good Example 1-4 good good Comparative Example 1-1 Bad good Comparative Example 1-2 good Dust transmission

As the size of the hole in the measurement result increased, the air permeability increased, confirming that the air permeability was good. In the case of Comparative Example 1-1 in which the diameter of the breathing hole was 0.1 mm, it was confirmed that the air permeability was poor. In the case of Comparative Example 1-2 having a hole diameter of 1.8 mm, air permeability was good, so breathing was easy, but there was a problem of dust permeation.

In Example 1-3, the air permeability was measured to be 145 cfm, and it was confirmed that the air permeability of Examples 1-1 to 1-4 was good. Therefore, the mask according to the embodiment of the present invention includes an outer skin layer having excellent air permeability, and thus can breathe smoothly even for long-time use.

Antibacterial analysis

The antibacterial effect of the outer layer of Example 1 was analyzed. Table 3 is a result of measuring the antibacterial degree of the polyurethane forming the outer layer.

Control Outer layer Staphylococcus aureus Initial bacteria count
(Number of bacteria / ml) 1.9 Х 10 ⁴ 1.9 Х 10 ⁴ 18 hours later
(Number of bacteria / ml) 4.5 Х 10 ⁶ 3.0 Х 10 ⁵ Sterility reduction rate - 93.9% Pneumococcal bacteria Initial bacteria count
(Number of bacteria / ml) 1.9 Х 10 ⁴ 1.9 Х 10 ⁴ 18 hours later
(Number of bacteria / ml) 4.0 Х 10 ⁷ 1.4 Х 10 ⁶ Sterility reduction rate - 96.5%

Staphylococcus aureus ( Staphylococcus aureus ATTC 6538) and pneumococcal pneumococcus (Klebsiella pneumonia ATCC 4352) was measured using. As a result of the analysis, it showed antibacterial performance of Staphylococcus aureus 93.9% against Staphylococcus aureus, and antibacterial performance of 96.5% of bacterium reduction against Pneumococcus.

Since it was confirmed that the outer layer of the mask according to the embodiment of the present invention has excellent antibacterial performance, the mask of the present invention has antibacterial performance, and thus can protect the respiratory system and the skin from bacteria introduced from outside air.

<Experimental Example 2> Analysis of endothelial layer 1

Microscopic analysis

6 is a photomicrograph of the endothelial layer according to Example 2. Polyurethane foam is an ultra-fine porous cell containing pores of various sizes, and the cell has a density of 0.22 g / cm 3 to 0.25 g / cm 3.

Air permeability analysis

The air permeability of the endothelial layer of Example 2 was analyzed using an air permeability tester under the conditions of KS K IOS 9237. The air permeability of the specimen of 20 cm 2 was measured at 100 kPa static pressure condition, and the breathing convenience of the mask was evaluated.

Antibacterial analysis

Table 4 is a result of measuring the antibacterial degree of the endothelial layer of Example 2.

Control Endothelial layer Staphylococcus aureus Initial bacteria count
(Number of bacteria / ml) 1.5 Х 10 ⁵ 1.5 Х 10 ⁵ 18 hours later
(Number of bacteria / ml) 2.0 Х 10 ⁸ 1.1 Х 10 ⁴ Bacterial reduction rate 92.7% Pneumococcal bacteria Initial bacteria count
(Number of bacteria / ml) 1.5 Х 10 ⁵ 1.5 Х 10 ⁵ 18 hours later
(Number of bacteria / ml) 1.6 Х 10 ⁸ <100 Bacterial reduction rate 99.9%

Antibacterial activity was measured using Staphylococcus aureus ATTC 6538 and pneumococcal bacteria ( Klebsiella pneumonia ATCC 4352). As a result of analysis, the endothelial layer of the present invention showed a bacterial reduction rate of 92.7% for Staphylococcus aureus, and a bacterial reduction rate of 99.9% for Pneumococcus.

UV protection effect analysis

The UV blocking effect of the endothelial layer according to Example 2 was analyzed.

The UV blocking rate was measured using a UV-vis-NIR spectrophotometer. The wavelength range was measured with UV-R (290 nm to 400 nm), UV-A (315 nm to 400 nm), and UV-B (290 nm to 315 nm) with a wavelength interval of 5 nm.

As shown in Table 5, the UV-R, UV-A, and UV-B wavelength ranges of 99.9% or more showed excellent UV blocking effect.

Therefore, the mask according to the embodiment of the present invention has an excellent UV blocking rate of 95 to 99.9% at a wavelength of 290 to 400 nm.

wavelength Blocking rate (%) UV-R 99.9 UV-A 99.9 UV-B 99.9

<Experiment 3> Analysis of endothelial layer 2

Antibacterial analysis

The antibacterial effect of the endothelial layer according to Example 3 and the antibacterial property after washing were evaluated.

Table 4 is a result of analyzing the antimicrobial effect of the endothelial layer according to the content of the functional fiber.

Sample number Initial number of bacteria After 18 hours Sterilization reduction rate Example 3-1 1.5 Х 10 ⁵ 4.3 Х 10 ³ 97.1% Example 3-2 2.7 Х 10 ² 99.8% Example 3-3 100 or less 99.9% Example 3-4 100 or less 99.9% Comparative Example 3-1 1.8 Х 10 ⁸ 0.0%

A circular knit was made of a single fiber blend consisting of functional fibers and cotton, and was tested for antimicrobial by the test method AATCC TM100. As a result, in Example 3-1, the antibacterial performance of the sterilization reduction rate of 97.1% was exhibited, and in Examples 3-3 and 3-4, the antibacterial performance of the sterilization reduction rate was 99.9%.

On the other hand, in Comparative Example 3-1 without functional fibers, the sterilization reduction rate was confirmed to be 0%.

Next, after washing, the antibacterial effect was analyzed.

10 times hot water washing was boiled in laundry at 100 ℃ for 40 minutes, and the antibacterial activity against Staphylococcus aureus and Pneumococcus was measured by the KSK 0693 method.

Antibacterial activity against Staphylococcus aureus after 10 hot water washes Antibacterial activity against pneumococcal bacteria after washing 10 times with hot water Antibacterial activity against Staphylococcus aureus after 50 hot water washes Antibacterial activity against pneumococcal bacteria after washing 50 times with hot water Example 99.99 99.99 99.99 99.99 Comparative Example 50.32 42.85 30.38 15.24

Table 7 shows the results of measuring the antibacterial properties after washing. The antimicrobial activity against Staphylococcus aureus and pneumococcal bacteria after 50 washes was measured by the KSK 0430 method, and the antibacterial activity of the sample washed 50 times by the KSK 0693 method was measured. As a result of measuring the antibacterial activity against Staphylococcus aureus and pneumococcal bacteria, the antibacterial activity was 99.99%.

Therefore, the antibacterial deodorizing functional fabric is woven or knitted with a functional spun yarn containing a functional compound, and thus has excellent antibacterial and deodorizing properties. The excellent antibacterial and deodorant properties can effectively protect the human body from bacterial growth.

In addition, since the functional compound having antibacterial and deodorizing properties is located inside the functional fiber, it is not damaged from external requirements such as washing and friction. Accordingly, the antibacterial and deodorizing performance is not deteriorated, so semi-permanent use is possible.

In addition, since the functional compound is not located outside the spinning yarn and is evenly distributed throughout the interior, it can provide a texture similar to that of a cotton fabric. Accordingly, an antibacterial deodorant functional fabric manufactured by weaving or knitting can be applied to a mask using an antibacterial deodorizing functional spun yarn.

Therefore, the antibacterial deodorizing functional fabric is woven or knitted with a functional spun yarn containing a functional compound, and thus has excellent antibacterial and deodorizing properties. The excellent antibacterial and deodorant properties can effectively protect the human body from bacterial growth.

<Experiment 4> Mask analysis

Analysis of tensile strength

The tensile strength of the ring portion of the mask was measured using the grab method of the mask of Example 4. As a result of the measurement, the tensile strength was 3 kgf / mm 2.

10: mask 11: front
12: rear 13: body
14: loop 20: filter
100: outer layer 101: hole
200: inner layer 300: adhesive layer

Claims (11)

A mask comprising an outer skin layer formed of polyurethane comprising a hole having a diameter of 0.2 to 1.5 mm and an inner skin layer formed on the outer skin layer. In claim 1,
Mask, characterized in that the hole is formed in the ring portion or the body. In claim 1,
A mask characterized in that the air permeability of the endothelial layer is excellent. In claim 1,
The endothelial layer is made of a microporous material, and the mask characterized in that the density of the microporous material is 0.10g / cm 3 to 0.30g / cm 3. In claim 1,
A mask characterized in that it contains 98 to 99.9 of polyurethane based on 100 parts by weight of the whole inner layer, and contains 0.1 to 2 of a mixed composition of silicon, titanium dioxide, or zinc pyrithione. In Section 5
The inner layer is a mask characterized in that the UV blocking efficiency is 95 to 100%. In claim 1,
The endothelial layer includes a functional fiber having an antibacterial deodorizing function, and a short fiber, and the functional fiber is formed of an antibacterial deodorizing functional spun yarn containing 0.6 to 4% by weight of copper sulfide relative to the total weight of the functional fiber, Mask. In claim 7,
The functional spun yarn, the functional fibers and short fibers are contained in a ratio of 1: 9 to 5: 5, the mask. In claim 1,
A mask further comprising an adhesive layer formed between the outer layer and the inner layer. In paragraph 1
Mask characterized in that the tensile strength of the ring portion of the mask is 1 to 5㎏f / ㎟ In claim 1,
The outer layer is a mask having an air permeability of 30 to 280 cfm.

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