Mask with ventilating and filtering functions

Abstract

The utility model discloses a mask with ventilating and filtering functions. The mask comprises a mask body and hanging lugs connected with the two sides of the mask body. The mask body is integrally formed after hot pressing of a composite fabric; the composite fabric comprises at least one composite layer unit, and each composite layer unit comprises an outer-layer fabric, a middle air layer and an inner-layer fabric. The middle air layer is arranged between the outer-layer fabric and the inner-layer fabric, and the middle air layer is arranged in a folding manner through fiber yarns to form a three-dimensional crossed net-shaped structure. According to the mask with the ventilation and filtering functions, through the design of the mask fabric composite layer structure and the integrated overall structure design, the mask has a certain filtering function while having good ventilation performance, and is skin-friendly, light and good in wearing comfort.

Description

Technical Field

[0001] This utility model relates to the field of mask technology, and more specifically to a mask with breathable and filtering functions. Background Technology

[0002] A face mask is a personal protective and hygiene product worn over the mouth and nose to filter the air entering the mouth and nose, blocking harmful gases, odors, droplets, viruses, and other substances. Face masks also offer some filtration of air entering the lungs and provide daily protection such as sun protection during outdoor activities.

[0003] For example, the invention application with application number 202010190658.9 discloses an ear loop type multi-layer composite mask, including a left mask body and a right mask body that are symmetrical to each other. Both the left mask body and the right mask body include an ear loop part and a breathable part that are integrally formed by punching and cutting composite material. The composite material is formed by combining an antibacterial coating, a polyester cotton base layer and an outer layer. The antibacterial coating is formed by spraying an antibacterial agent onto the surface of the polyester cotton base layer away from the outer layer. The antibacterial agent is octadecyl dimethyl (3-methoxysilylpropyl) ammonium chloride. The outer layer is a polyester film with breathable holes. The edges of the breathable parts of the left and right masks body are formed by ultrasonic welding to form an arc-shaped ridge located on the center line of the mask.

[0004] For example, utility model application number 202023340794.6 discloses a breathable non-woven composite fabric for mask production, including a non-woven fabric surface layer, a breathable surface layer provided on one side wall of the non-woven fabric surface layer, and a breathable cavity opened on the breathable surface layer; a breathable hole opened on the non-woven fabric surface layer, the breathable hole penetrating the non-woven fabric surface layer, and the breathable hole connecting the breathable cavity to the outside.

[0005] However, many existing masks are either not breathable and uncomfortable after prolonged wear due to their design and materials, or they lack filtration, limiting their wearing scenarios. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a mask with breathable and filtering functions. Through the design of the composite layer structure of the mask fabric and the overall structural design of the mask, the mask can be made to have good breathability while also having a certain filtering function. It is also skin-friendly, lightweight and comfortable to wear.

[0007] The technical solution adopted by this utility model to solve the technical problem is: a mask with breathable and filtering functions, the mask including a mask body and ear loops connected to both sides of the mask body; the mask body is integrally formed by hot pressing of composite fabric; the composite fabric includes at least one composite layer unit, the composite layer unit including an outer fabric, an intermediate air layer and an inner fabric; the intermediate air layer is disposed between the outer fabric and the inner fabric, and the intermediate air layer is formed by folding fibers to form a three-dimensional cross mesh structure.

[0008] Furthermore, the composite layer unit comprises two or more units, and the composite layer units are bonded together by an adhesive layer.

[0009] Furthermore, an intermediate support layer is formed by sewing polyester or nylon yarn between the outer and inner fabrics; after hot pressing, the polyester or nylon yarn in the intermediate support layer is folded to form the intermediate air layer with a three-dimensional cross-mesh structure. The polyester or nylon yarn has a certain elasticity, wherein polyester or nylon accounts for 70-99% and elastic yarn accounts for 1-30%. After the polyester or nylon yarn is sewn between the outer and inner fabrics by weaving, the composite fabric is placed in a mold for hot pressing, and the polyester or nylon yarn sewn between the outer and inner fabrics folds into a three-dimensional cross-mesh structure under pressure.

[0010] Furthermore, the outer layer fabric is an elastic polyester fabric with several evenly distributed breathable holes; the inner layer fabric is also an elastic polyester fabric. In the elastic polyester fabrics used for both the outer and inner layers, polyester or nylon accounts for 70-99%, and elastic yarn accounts for 1-30%, giving the outer and inner layers a certain degree of elasticity. By controlling the pressure in different areas during the hot-pressing process, the resulting mask body forms a one-piece "cup" shape.

[0011] Furthermore, the thickness of the composite layer unit is 1 to 6 mm.

[0012] Furthermore, the edges of the mask body are sealed by heat pressing; in a single composite layer unit, the thickness of the sealed area is 0.1 to 2 mm.

[0013] Furthermore, the outer fabric is treated with an antibacterial agent.

[0014] Furthermore, a reinforcing piece is provided on the inner side of the mask body near the ear loops, and the reinforcing piece is connected to the mask body by adhesive or heat pressing.

[0015] The beneficial effects of this utility model are as follows: Compared with the prior art, the breathable and filtering mask provided by this utility model uses a three-dimensional cross-mesh structure formed by hot-pressing and folding polyester yarn or nylon yarn as the middle air layer; in the structure of the middle air layer, on the one hand, the three-dimensional cross-mesh has a certain porosity, which makes the mask have good breathability; on the other hand, the three-dimensional cross-mesh structure also has a certain filtering effect, which can filter larger particles. Furthermore, since the outer fabric can be treated with antibacterial agents, the protective effect of the mask is further increased. Thus, the mask of this utility model has excellent breathability while also having a certain filtering and antibacterial performance.

[0016] The mask body of this utility model is integrally formed by hot pressing. Compared with the existing technology of welding or sewing two mask bodies together, the manufacturing process of this utility model is simpler, and the resulting mask has a more three-dimensional feel and better wearing comfort.

[0017] The composite layer units of this invention can be bonded together with an adhesive layer. After the composite layer units are stacked, the filtration and warmth retention performance of the mask can be increased, while ensuring that its breathability is not significantly affected, making the mask suitable for different wearing scenarios. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of a single composite layer unit in this utility model.

[0019] Figure 2 This is a schematic cross-sectional view of the combined structure of the two composite layer units in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the mask body in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the mask body with reinforcing strips in this utility model.

[0022] The mask consists of: 1-outer fabric; 2-middle air layer; 3-inner fabric; 4-breathing holes; 5-adhesive layer; 6-mask body; 7-ear loops; and 8-reinforcing piece. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0024] Example 1

[0025] like Figure 3 As shown, a breathable and filtering face mask includes a mask body 6 and ear loops 7 connected to both sides of the mask body 6; the mask body 6 is integrally formed by hot pressing a composite fabric; the composite fabric includes a composite layer unit. Figure 1 As shown, the composite layer unit includes an outer fabric 1, a middle air layer 2, and an inner fabric 3; the middle air layer 2 is disposed between the outer fabric 1 and the inner fabric 3, and the middle air layer 2 is formed by folded fibers to create a three-dimensional cross-mesh structure. The thickness of the composite layer unit is 1-1.5 mm. The edges of the mask body 6 are sealed by heat pressing, and the thickness of the sealed area is 0.1-0.5 mm.

[0026] In this embodiment, a middle support layer is formed by sewing polyester yarn between the outer fabric 1 and the inner fabric 3; after hot pressing, the polyester yarn in the middle support layer is folded to form the middle air layer 2 with a three-dimensional cross-mesh structure. The polyester yarn has a certain elasticity, wherein polyester accounts for 95% and elastic yarn accounts for 5%.

[0027] The outer fabric 1 is an elastic polyester fabric, and several breathable holes 4 are evenly distributed on the outer fabric 1; the outer fabric 1 is treated with an antibacterial agent. The inner fabric 3 is an elastic polyester fabric.

[0028] The masks prepared in this embodiment were subjected to performance testing.

[0029] 1) Test conditions: Test area 20cm² 2 Pressure drop 100Pa; face down. Test result: air permeability not less than 800mm / s.

[0030] 2) Test conditions: The gas flow rate for the test needs to be adjusted to (8.0±0.2) L / min, the diameter of the sample test area is 25 mm, and the test area is 4.9 cm². 2 The test should be conducted at three non-overlapping test areas in the center of the mask (where the mouth and nose are when worn). Test result: Breathing resistance not greater than 49 Pa / cm². 2 .

[0031] 3) Test conditions: The test airflow rate was set to (32±2) L / min, and the cross-sectional area through which the airflow passed was 50 cm². 2 The median diameter of the count was (0.075±0.020) μm. Test results: The filtration efficiency for non-oily particles is not less than 25%.

[0032] Note: The median diameter (CMD) of 0.075 μm is approximately the aerodynamic mass median diameter (MMAD) of 0.3 μm.

[0033] Example 2

[0034] A breathable and filtering face mask includes a mask body 6 and ear loops 7 connected to both sides of the mask body 6; the mask body 6 is integrally formed by hot pressing of composite fabric; as shown Figure 2 As shown, the composite fabric comprises two composite layer units, which are bonded together by an adhesive layer 5. Each composite layer unit includes an outer fabric 1, an intermediate air layer 2, and an inner fabric 3; the intermediate air layer 2 is disposed between the outer fabric 1 and the inner fabric 3, and the intermediate air layer 2 is formed by folded fibers to create a three-dimensional cross-mesh structure. The thickness of a single composite layer unit is 1–1.5 mm; the thickness of the mask body 6 is 2–4 mm. The edges of the mask body 6 are sealed by heat pressing, and the thickness of the sealed area is 0.2–1.0 mm.

[0035] In each composite layer unit, an intermediate support layer is formed by sewing nylon yarn between the outer fabric 1 and the inner fabric 3; the intermediate support layer is then folded by hot pressing to form the intermediate air layer 2 with a three-dimensional cross-mesh structure. The nylon yarn has a certain elasticity, wherein nylon accounts for 95% and elastic yarn accounts for 5%.

[0036] In each composite layer unit, the outer layer fabric 1 is an elastic nylon fabric, and a plurality of breathable holes 4 are evenly distributed on the outer layer fabric 1. The outer layer fabric 1 is treated with an antibacterial agent; the inner layer fabric 3 is an elastic nylon fabric.

[0037] The masks prepared in this embodiment were subjected to performance testing.

[0038] 1) Test conditions: Test area 20cm² 2 Pressure drop 100Pa; face down. Test result: air permeability not less than 800mm / s.

[0039] 2) Test conditions: The gas flow rate for the test needs to be adjusted to (8.0±0.2) L / min, the diameter of the sample test area is 25 mm, and the test area is 4.9 cm². 2 The test should be conducted at three non-overlapping test areas in the center of the mask (where the mouth and nose are when worn). Test result: Breathing resistance not greater than 49 Pa / cm². 2 .

[0040] 3) Test conditions: The test airflow rate was set to (32±2) L / min, and the cross-sectional area through which the airflow passed was 50 cm². 2 The median diameter of the count was (0.075±0.020) μm. Test results: The filtration efficiency for non-oily particles is not less than 25%.

[0041] Note: The median diameter (CMD) of 0.075 μm is approximately the aerodynamic mass median diameter (MMAD) of 0.3 μm.

[0042] Example 3

[0043] This embodiment provides a breathable and filtering mask, with the remaining structure being the same as in Embodiment 1. Figure 4 As shown, a reinforcing piece 8 is provided on the inner side of the mask body 6 near the ear loops 7. The reinforcing piece 8 is connected to the mask body 6 by adhesive or heat pressing. The reinforcing piece 8 can strengthen the connection between the ear loops 7 and the mask body 6. When the reinforcing piece 8 is made of skin-friendly fabric, it can also increase the comfort of the face when wearing the mask.

[0044] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A breathable and filtering face mask, the face mask comprising a face mask body and ear loops connected to both sides of the face mask body; characterized in that: The mask body is integrally formed by hot pressing composite fabric; the composite fabric includes at least one composite layer unit, the composite layer unit includes an outer fabric, an intermediate air layer and an inner fabric; the intermediate air layer is disposed between the outer fabric and the inner fabric, and the intermediate air layer is formed by folding fibers to form a three-dimensional cross mesh structure.

2. The mask with air permeability and filtering function according to claim 1, characterized in that: The composite layer unit consists of two or more units, and each composite layer unit is bonded together by an adhesive layer.

3. A mask with breathable and filtering functions as described in claim 1, characterized in that: An intermediate support layer is formed by sewing polyester or nylon yarn between the outer and inner fabrics; the intermediate support layer is then folded by hot pressing to form an intermediate air layer with a three-dimensional cross-mesh structure.

4. A mask with breathable and filtering functions as described in claim 1, characterized in that: The outer layer fabric is elastic polyester fabric, and several breathable holes are evenly distributed on the outer layer fabric; the inner layer fabric is elastic polyester fabric.

5. A mask with breathable and filtering functions as described in claim 1, characterized in that: The thickness of the composite layer unit is 1 to 6 mm.

6. A mask with breathable and filtering functions as described in claim 1, characterized in that: The edges of the mask body are sealed by heat pressing, and the thickness of the sealed area in a single composite layer unit is 0.1 to 2 mm.

7. A mask with breathable and filtering functions as described in claim 1, characterized in that: The outer fabric is treated with an antibacterial agent.

8. A mask with breathable and filtering functions as described in claim 1, characterized in that: The inner side of the mask body near the ear loops is provided with a reinforcing piece, which is connected to the mask body by adhesive or heat pressing.

Images