TWI666039B - Multilayer high breathable mask - Google Patents

Abstract

The present invention is a multi-layer high-breathable mask, which makes multi-layer masks have better breathability and filtering effect. Mainly: the outer layer and the inner surface of the filter material layer are respectively provided with a middle non-woven layer and an outer layer cloth, an inner layer cloth and an outer layer cloth An airflow layer is arranged between the middle layer and the non-woven fabric layer. The airflow layer is formed by the first layer line and the second layer line of the chemical fiber arranged in an interval between the upper layer and the lower layer, so as to form a vertical ventilation gap and a lateral ventilation which are connected to each other. The gap, and the filter material layer is made of a single material or a plurality of polytetrafluoroethylene, polypropylene, polyethylene, polyester, polyamide, polyacrylonitrile, etc., with an ultra-fine fiber diameter of about 20 to 50 nanometers. It is composed of composite materials composed of individual materials. Therefore, by using the airflow layer and the filter material layer, excellent filtering and ventilation effects are obtained.

Description

Multilayer high breathable mask

The invention relates to a multi-layer high-breathable mask, which makes the multi-layer mask have better filtering effect, and has a high breathability effect, which makes the use of the mask more comfortable.

Check, the conventional multi-layer mask structure is generally shown in the first, second, third, and fourth figures, and is arranged as an inner layer cloth 10, an outer layer cloth 11 with two middle layers of non-woven cloth 2, 3, and a filter material layer 1. The inner and outer layer fabrics 10 and 11 are woven fabrics. The structure of the woven fabric is shown in the second figure, and the first layer thread 12 and the second layer thread 13 of the yarn are interlaced and knitted upward and downward. The structure of the two-layer middle-layer non-woven fabrics 2 and 3 is shown in the third figure. The short fibers are irregularly laid out to a thickness, and the yarn is stapled and combined to form the shape. The conventional structure described above actually has the following disadvantages. :

(1) As shown in the second figure, although the woven fabrics of the inner and outer fabrics 10 and 11 can be ventilated, the first layer line 12 and the second layer line 13 abut against each other and form a gap, forming a gap with the middle layer. When the non-woven fabrics 2 and 3 are attached, there is no gap, so the air circulation is not smooth. When used, as shown in the fourth figure, it is applied to the cheeks 4 and the mouth. The appearance of cheek 4 will be the appearance of swelling in the mouth when exhaling. This is the phenomenon of unsmooth ventilation, causing breathing discomfort and even insufficient breathing.

(2) In particular, the air exhaled from the mouth of the human body must contain water vapor. At this time, the inner layer, outer fabric 10, 11 and filter material layer 1 etc., if cotton material is used, it will absorb water vapor and increase breathing When the ventilation is not smooth, and the chemical fiber material is used for the inner layer, it does not absorb water, which causes a sweltering feeling.

(3) Therefore, with the "N95" type masks currently on the market, the filtering effect is greater than 95% for a particle size of 0.3 μm, the inhalation resistance is 34 ~ 50mmH2O, and the exhalation resistance is 25 ~ 34mmH2O. There is room for improvement in efficiency, inspiratory and expiratory impedance, which are all worse than the present invention.

(4) The inner layer material lacks functions such as moisture absorption, perspiration, coolness, bacteriostatic function, and far infrared rays.

The present invention is to improve the shortcomings of the conventional knowledge. The main technology and purpose are:

First, it is composed of an inner cloth, an outer cloth, a two-layer non-woven cloth, a filter material layer, and an airflow layer. The airflow layer is provided between the outer cloth and the middle non-woven cloth. The filter material layer is set to be composed of a single material or a plurality of materials such as polytetrafluoroethylene, polypropylene, polyethylene, polyester, polyamide, polyacrylonitrile, and the like with an ultrafine fiber diameter of about 20 to 50 nanometers. It is made of composite materials, so it can get excellent filtration efficiency.

Secondly, the airflow layer is configured by the first layer line arranged at intervals, and the second layer line is composed of upper and lower layers, instead of interlacing the upper and lower layers to form a horizontal air gap and a vertical air gap, so that the air layer It has the effect of air flow, so it can reduce the resistance of inhalation and exhalation, and make breathing more smooth and comfortable during use. In addition, because the middle layer of non-woven fabric has good bulkiness and air permeability, it can also provide good ventilation properties.

Thirdly, the inner fabric is made of composite functional fabric, which will provide better hygiene quality and comfort for the wearer of the mask.

[Learning]

1‧‧‧Filter material layer

2,3‧‧‧Mid-layer non-woven fabric

4‧‧‧ cheek

10‧‧‧Inner cloth

11‧‧‧ Outer fabric

12‧‧‧First line

13‧‧‧Second layer line

【this invention】

1‧‧‧Filter material layer

2,3‧‧‧Mid-layer non-woven fabric

4‧‧‧ cheek

20‧‧‧ air layer

21‧‧‧First line

22‧‧‧Second layer line

23‧‧‧ Lateral ventilation gap

24‧‧‧ Longitudinal ventilation gap

The first figure is a three-dimensional sectional view and a partially enlarged view of a conventional structure

Second picture: Enlarged view of conventional inner and outer cloth and middle layer structure

The third picture

The fourth figure is a front sectional view of the state of use

Fifth Figure: Three-dimensional sectional view and a partially enlarged view of the structure of the present invention

Figure 6 Enlarged view of the airflow layer structure of the present invention

The seventh figure is a front sectional view of the use state of the present invention

The eighth figure of the embodiment of the airflow layer of the present invention

Please refer to the fifth, sixth, and seventh pictures. The inner layer of the sewn unit is a nylon cloth with cool, bacteriostatic and moisture-wicking composite functions. 10, the outer layer is cotton 11, the second layer is non-woven, 2, and 3. The filter material layer 1 is composed of two layers of non-woven fabrics in the middle layer, the inner layer of cloth 10 is attached to the middle layer of non-woven fabrics 2, and the outer layer of cloth 11 is provided on the surface of the other middle layer of non-woven fabrics 3; It is characterized in that the filter material layer 1 is made of ultra-thin fiber, and the fiber diameter is 20 nanometers to 50 nanometers, which is made of polytetrafluoroethylene; Between the outer layer cloth 11 and the middle layer non-woven cloth 3, an airflow layer 20 is provided; the airflow layer 20 is configured by a plurality of chemical fibers, the first layer line 21 and the second layer line 22 are bonded together, and the first layer line 21 is provided as The second layer line 22 is arranged horizontally and spaced apart. The second layer line 22 is longitudinally laid on the first layer line 21 to form an airflow layer 20 having a communicating upper and lower horizontal ventilation gap 23 and a vertical ventilation gap 24. The middle layer non-woven fabric of this embodiment is a polyethylene / polyester hot air non-woven fabric of 30 grams per square meter (gsm). Since the fiber density is low and the thickness is 2 millimeters (mm), it has good bulkiness and air permeability.

According to the above structure, the following effects and advantages can be obtained:

(1) Good filtration efficiency:

Because the present invention is provided with the airflow layer 20, it can obtain excellent breathability effect (details will be described later), so ultrafine fibers can be used, and the fiber diameter is 20 nanometers to 50 nanometers, which can effectively block small particles. After actual experimental testing, Please refer to the attached test report for particle sizes below 1.0μm to 0.2μm, which can reach 99.9% ~ 94.4%. As for the general "N95" type mask, the filtering efficiency is tested for the 0.3μm particle size. The filtering efficiency of the "N95" type mask must be greater than 95%. In contrast, the filtering efficiency of the present invention for the 0.3μm particle size is 96.7%. Better filtering efficiency than "N95" type.

(2) Good ventilation (small exhalation and inhalation resistance):

As shown in the seventh figure, when covering the cheek 4 and the mouth, an airflow layer 20 is provided between the outer cloth 11 and the filter material layer 1, and the airflow layer 20 has horizontal and vertical ventilation gaps 23, 24, A large gap space is formed between the outer layer cloth 11 and the filter material layer 1. In addition, the contact area between the airflow layer and its immediate upper and lower layers is small, so air can flow quickly in the horizontal and vertical ventilation gaps 23 and 24 of the airflow layer 20, Inhale and exhale more smoothly. In addition, because the ventilation is smoother, the effect of quickly taking away water and gas can be obtained, and the effect of "air drying" can be obtained, and the effect that the filter layer 1 is not wet can be obtained, and the effect of extending the service life can be obtained; the above are subject to actual testing Please refer to the test report in Annex I. According to the "CNS14755 standard at 85L / min flow rate" test, the average inhalation impedance of the present invention is 17.95mmH ₂ O, the average exhalation impedance is 17.19mmH ₂ O, and the commercially available " The inhalation resistance standard of N95 ″ is 34 ~ 50mmH ₂ O, and the exhalation resistance is 25 ~ 34mmH ₂ O. Therefore, the inhalation resistance and the exhalation resistance of the present invention are low, so that a smooth and comfortable breathing effect can be obtained.

In addition, according to the above-mentioned technology and creativity, the airflow layer 20 of the present invention may also be provided between the inner layer fabric 10 and the middle layer non-woven fabric 2. The airflow layer 20 of the present invention may also be implemented as shown in the eighth figure, and the first layer line 21 and the second layer line 22 may be provided in three layers or more.

In summary, the present invention does have excellent practicability and enhanced efficacy, which is in line with the gist of the invention patent.

【annex】

1. "Filtration efficiency" and "inspiratory and expiratory impedance" test report forms of the finished product of the present invention.

Claims (7)

A multi-layer high-breathable mask is composed of an inner layer fabric, an outer layer fabric, two middle layers of non-woven fabrics, and a filter material layer. The filter material layer is disposed between the two middle layer non-woven fabrics, and the inner layer fabric is adhered to one middle layer. Non-woven fabric, the outer fabric is set on the surface of another middle-layer non-woven fabric; its main feature is that the filter material layer is made of ultrafine fibers with a fiber diameter of 20 nanometers to 50 nanometers; the outer fabric and the middle layer Between the non-woven fabrics, an airflow layer is provided; the airflow layer is configured by a plurality of chemical fibers with a first layer line and a second layer line bonded together, the first layer line is arranged in a horizontally spaced arrangement, and the second layer line is set into The spaced arrays are longitudinally laid on the first layer line to form an airflow layer with communicating upper and lower horizontal ventilation gaps and vertical ventilation gaps. A multi-layer highly breathable respirator according to claim 1, wherein the outer layer fabric and the middle layer non-woven fabric are not provided with an airflow layer, and the airflow layer is provided between the inner layer fabric and the middle layer non-woven fabric. The multi-layer highly breathable mask according to claim 1 or 2, wherein the filter material layer is made of a single material or a plurality of materials such as polytetrafluoroethylene, polypropylene, polyethylene, polyester, polyamide, polyacrylonitrile, and the like. Made of composite materials. The multi-layer high-breathable mask according to claim 1 or 2, wherein the first layer line and the second layer line of the airflow layer may be provided in two or more layers. The multi-layer high-breathable respirator according to claim 1 or 2, wherein the inner cloth is a polyester or polyamide cloth with a composite function of cooling, bacteriostasis and moisture wicking. The multi-layer highly breathable respirator according to claim 1 or 2, wherein the inner fabric is a fabric having a function of absorbing moisture and wicking sweat. The multi-layer highly breathable respirator according to claim 1 or 2, wherein the inner cloth is a cloth with antibacterial function.