Mask

Abstract

To provide a mask with good fitting feeling.SOLUTION: A mask 10 comprises a mask body 12 for covering a portion of the face including the mouth, and an ear hooking part 14 disposed so as to be connected to the side edge of the mask body 12. The mask body 12 is formed of a laminate sheet 16 obtained by superposing a foam layer 18 made of a soft polyurethane foam having air-permeability and elasticity and a fabric layer 20 made of a fabric having air-permeability and elasticity. The fabric layer 20 has such an elasticity as makes possible to expand and contract following expansion and contraction of the foam layer 18 which are joined to each other.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a mask.

Background Art

[0002] As a sanitary mask, a mask having a main body portion covering the mouth and nostrils and made of a low-resilience polyurethane foam has been proposed (see, for example, Patent Document 1). By using a polyurethane foam having appropriate elasticity, the main body portion of the mask deforms according to the unevenness of the face, so that the fitting feeling of the mask can be improved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Instead of using a filter on top of the mask as described in Patent Document 1, it is conceivable to join a filter to the main body portion of the mask. However, when a filter is joined to the main body portion, the elasticity peculiar to the polyurethane foam may be inhibited by the filter, and the fitting feeling to the face may decrease.

[0005] In view of the above problems in the prior art, the present invention has been proposed to preferably solve these problems, and an object thereof is to provide a mask having a good fitting feeling to the face.

Means for Solving the Problems

[0006] To overcome the above problems and achieve the intended object, the mask according to the present invention is a mask main body portion covering a part of the face including the mouth, and An ear hook portion provided continuously along the side edge of the mask body portion. The mask body portion is composed of a laminated sheet in which a foam layer made of a soft polyurethane foam having air permeability and elasticity and a fabric layer made of a fabric having air permeability and elasticity overlap each other. The gist is that the fabric layer has elasticity that can expand and contract following the expansion and contraction of the foam layer joined to each other.

Advantages of the Invention

[0007] According to the mask according to the present invention, the feeling of fitting to the face is good.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Modes for Carrying Out the Invention

[0009] Next, with respect to the mask according to the present invention, preferred embodiments will be described below with reference to the accompanying drawings. In the following description, the side of the wearer when wearing the mask may be referred to as the back side, and the side opposite to the wearer may be referred to as the front side.

Embodiment

[0010] As shown in FIGS. 1 to 3, the mask 10 according to the embodiment includes a mask body portion 12 that covers a part of the face including the mouth, and ear hook portions 14 provided along the side edges of the mask body portion 12. In the mask 10 of the embodiment, the mask body portion 12 is set to a size that can cover the central part of the face from the nasal muscles of the wearer through the nostrils and the mouth to the chin, and both left and right cheeks. Further, the mask 10 is provided with ear hook portions 14 having ear hook holes 14a formed therein for hooking on the ears during wearing, along the left and right edges of the mask body portion 12.

[0011] As shown in FIG. 4, the mask 10 is composed of a laminated sheet 16 in which at least the mask body portion 12 overlaps a foam layer 18 made of a soft polyurethane foam having air permeability and elasticity, and a fabric layer 20 made of a fabric having air permeability and elasticity. In the mask 10, the fabric layer 20 has elasticity that can expand and contract following the expansion and contraction of the foam layer 18 that joins with each other. The mask 10 of the embodiment is integrally formed by the laminated sheet 16 composed of the foam layer 18 and the fabric layer 20 for the mask body portion 12 and the ear hook portions 14. The mask 10 of the embodiment is arranged such that the foam layer 18 faces the back side that touches the face of the wearer, and the fabric layer 20 faces the front side.

[0012] As shown in FIG. 5, the mask 10 forms the mask body portion 12 by joining two laminated sheets 16, 16 into a three-dimensional shape. When the two laminated sheets 16, 16 are expanded away from each other around a connecting portion 22 formed in the central portion of the mask body portion 12, the mask body portion 12 has a three-dimensional shape that curves convex toward the front side as it goes toward the central portion in the vertical direction and convex toward the front side as it goes toward the central portion in the horizontal direction (see FIG. 1).

[0013] As shown in FIG. 2, the mask 10 is formed such that each laminated sheet 16 has a symmetric shape that constitutes the left and right halves of the mask 10 in the left-right direction. Specifically, the left and right halves of the mask main body 12 and the ear hook portion 14 connected to one side portion of the mask main body 12 are formed of a single laminated sheet 16 (see FIG. 5(c)). The laminated sheet 16 is formed in a curved shape with the central portion in the vertical direction being convex on the other side opposite to the ear hook portion 14 which is the central portion in the left-right direction of the mask main body 12.

[0014] As the soft polyurethane foam constituting the foam layer 18, either a polyether-based or a polyester-based one may be used. Since the laminated sheet 16 has a laminated structure of the foam layer 18 and the fabric layer 20, the fabric layer 20 can assist the weak parts of the physical properties of the soft polyurethane foam, so the range of selectable soft polyurethane foams is widened. For example, when using a polyether-based soft polyurethane foam that is superior in water resistance (resistance to wet heat aging) compared to a polyester-based one, the mechanical strength will be inferior compared to a polyester-based one, but the presence of the fabric layer 20 reinforces it and ensures the mechanical strength. The soft polyurethane foam can be obtained by slab molding, extraction method, or other molding methods. Also, as the soft polyurethane foam, a defoamed product in which the cell walls (membranes) between adjacent bubbles are removed and only the skeleton remains, or a product having a communicating structure or a semi-communicating structure with holes in each cell wall (membrane) can be used. The defoamed product can be obtained by known defoaming treatments, for example, a method of dissolving the cell walls with a solvent, a method of destroying the cell walls by explosion, etc.

[0015] For the soft polyurethane foam, it is preferable to use one with the number of cells (Reference in Annex 1 of JIS K6400-1:2004) in the range of 30 cells / 25 mm to 150 cells / 25 mm, preferably in the range of 40 cells / 25 mm to 110 cells / 25 mm. When the soft polyurethane foam has the number of cells in the above range, when used as the mask 10, the foam layer 18 will have good frictional resistance with the skin regarding preventing the deviation of the mask 10. And it can reduce the rough feeling against the skin. Furthermore, when the soft polyurethane foam has the number of cells in the above range, when used as the mask 10, appropriate air permeability can be ensured, so that stuffiness and sweating can be reduced, and a good wearing feeling can be obtained. Moreover, when the soft polyurethane foam has the number of cells in the above range, when used as the mask 10, appropriate collection efficiency for pollen etc. can be obtained.

[0016] For the soft polyurethane foam, it is preferable to use one with the elongation rate (Type 2 dumbbell of JIS K6400-5:2004) in the range of 80% to 500%, 150% to 500%, more preferably in the range of 200% to 450%. When the soft polyurethane foam has the elongation rate in the above range, when used as the mask 10, the periphery of the mask main body 12 can be well adhered to the face, and it is difficult to generate a gap between the face. Also, it can moderately elongate following the movement of the mouth etc., and the burden during wearing can be reduced, so it is preferable. When the soft polyurethane foam with the elongation rate in the above range is used to form the ear-hanging part 14, the ear-hanging part 14 is difficult to break, and the burden on the ear can be reduced, making it difficult for the ear to ache.

[0017] For the soft polyurethane foam, its density (JIS K7222:2005) is 3 ~100 kg / m 3 in the range, more preferably 3 ~85 kg / m 3 in the range. It is preferable to use such a soft polyurethane foam. When the density is in the above range and it is used as the mask 10, it can be made lightweight, and the burden during wearing can be reduced.

[0018] For the soft polyurethane foam, it is preferable to use one whose hardness (25% ILD) is in the range of 40 N to 400 N, more preferably in the range of 60 N to 300 N. When the soft polyurethane foam has a hardness within the above range, when used as the mask 10, the periphery of the mask main body 12 can be well adhered to the face, making it difficult to generate a gap between the mask and the face. Also, it can follow the movements such as the opening of the mouth, so it is preferable because the burden during wearing can be reduced. When the ear-hanging part 14 is formed of the soft polyurethane foam having a hardness within the above range, the ear-hanging part 14 is less likely to break, and the burden on the ear can be reduced, making it difficult for the ear to ache. The above-mentioned hardness is determined by the hardness test method at 25% compression (D method) using a flat disk pressure plate with a diameter of 200 mm in accordance with JIS K6400-2:2012 edition.

[0019] For the soft polyurethane foam, it is preferable to use one whose air permeability is in the range of 15 cm 3 / (cm 2 ·sec) or more, and 100 cm 3 / (cm 2 ·sec) or more is more preferable. The air permeability of the soft polyurethane foam is more preferably 150 cm 3 / (cm 2 ·sec) or more, and even more preferably 200 cm 3 / (cm 2 ·sec) or more. The air permeability of the soft polyurethane foam is related to the collection efficiency of foreign matters such as pollen, and is 600 cm 3 / (cm 2·(sec) It is preferably set as follows. When the soft polyurethane foam has air permeability within the above range, when used as the mask 10, appropriate air permeability can be ensured, so that stuffiness and sweating can be reduced, and a good wearing feeling can be obtained. Further, when the soft polyurethane foam has air permeability within the above range, when used as the mask 10, appropriate collection efficiency for pollen and the like can be obtained. Thus, it is preferable that the soft polyurethane foam has air permeability within the above range because it can achieve both ease of breathing and appropriate collection efficiency for foreign matters. The air permeability described above is a value measured for a soft polyurethane foam with a predetermined thickness using the method described in JIS L1096-7:2010 "Textile and Knitted Fabric Test Methods: Method A (Frazee Method)".

[0020] The foam layer 18 preferably has a thickness in the range of 0.8 mm to 3 mm. When the mask body 12 has a thickness within the above range, it is difficult to be damaged during wearing and bulkiness can be suppressed, so it is easy to handle and the cost of the mask 10 can be suppressed.

[0021] It is preferable to use a soft polyurethane foam that has been subjected to a treatment for reducing odors derived from chemical substances such as foaming agents and is excellent in cleanliness (clean-treated product). Examples of the clean treatment include treating the soft polyurethane foam by washing with water or the like, or heat treatment (for example, 70 to 120 °C, 30 to 120 minutes) for deodorization, etc., which are treatments for removing chemical substances remaining in the soft polyurethane foam. Here, it is desirable that the amount of volatile organic compounds (total VOC amount) measured in accordance with VDA-278 of the mask body 12 which is a clean-treated product is 1000 ppm or less. In particular, when the total VOC amount is 400 ppm or less, it is more preferable because there is less odor and it is excellent in cleanliness.

[0022] The fabric constituting the fabric layer 20 can be a sheet-like fiber material such as knitted fabric, woven fabric, non-woven fabric, etc. Among these, knitted fabric is preferably used because it has better stretchability than woven fabric and non-woven fabric. As the fiber constituting the fabric, those made of chemical fibers such as polyethylene, polypropylene, nylon, urethane, rayon, etc., or those made of natural fibers such as cotton and wool can be used. Polyester fiber is preferable from the viewpoint of durability because it has less discoloration due to ultraviolet rays. If the fabric has low hygroscopicity, it is convenient when washing or drying. Also, fabrics made of cotton or rayon have water absorption, so they can be adopted when moisture absorption and moisturizing properties are required for the mask 10.

[0023] As the fabric, so-called stretch fabrics such as those having structural stretchability depending on the weaving or knitting method, or those having stretchability by using elastic fibers having stretchability, etc. are preferably used. When the fabric is a woven fabric, it is preferably a plain weave, twill weave, or jacquard weave having stretchability. When the fabric is a knitted fabric, warp knitting, weft knitting, or others can be used. For warp knitting, for example, tricot, double raschel, etc. can be mentioned, and for weft knitting, round knitting, honeycomb knitting, etc. can be mentioned. In addition, the fabric may be one having antibacterial properties (antibacterial fabric) by antibacterial treatment or the like.

[0024] When the fabric is a non-woven fabric, the web may be formed by any of the dry method, spunbond method, meltblown method, airlaid method, etc. From the viewpoint of the collection efficiency of fine foreign matters such as viruses, non-woven fabrics by the meltblown method (meltblown non-woven fabrics) and non-woven fabrics by the spunbond method (spunbond non-woven fabrics) are preferable. Also, for the non-woven fabric, the fiber bonding method of the web may be any of the chemical bonding method, thermal bonding method, needle punching method, hydroentangling method (spunlace), etc., but for the use of the mask 10, the hydroentangling method and the needle punching method with less VOC are preferable. In addition, the fiber sheet may have the surface fibers raised.

[0025] It is preferable to use a fabric whose elongation rate (JIS K6400-5:2004 dumbbell No. 2 type) is in the range of 50% to 500%. If the fabric is within the above-mentioned elongation rate range, it is possible to suppress the fabric layer 20 from interfering with the elasticity peculiar to the soft polyurethane foam forming the foam layer 18 in the laminated sheet 16. As a result, when the mask 10 is formed, it can appropriately stretch following the deformation of the mask main body 12 and movements such as the mouth, reducing the burden during wearing, which is preferable. Further, when the ear hooking portion 14 is formed by the laminated sheet 16, the ear hooking portion 14 is less likely to break, and the burden on the ears can be reduced, making it difficult for the ears to ache.

[0026] The fabric preferably has an air permeability in the range of 15 cm 3 / (cm 2 ·sec) or more, preferably 30 cm 3 / (cm 2 ·sec) or more, and more preferably 40 cm 3 / (cm 2 ·sec) or more. Note that the air permeability of the fabric is preferably set to 150 cm 3 / (cm 2 ·sec) or less in relation to the collection efficiency of foreign substances such as pollen. If the fabric has an air permeability within the above-mentioned range, when the mask 10 is formed, appropriate air permeability can be ensured, reducing the feeling of breathlessness and providing a good wearing feeling. Also, if the fabric has an air permeability within the above-mentioned range, when the mask 10 is formed, an appropriate collection efficiency for viruses and the like can be obtained. Thus, if the fabric has an air permeability within the above-mentioned range, it is preferable because it can achieve both ease of breathing and an appropriate collection efficiency for foreign substances. Also, if the fabric has an air permeability within the above-mentioned range, when the mask 10 is formed, appropriate air permeability can be ensured, reducing the feeling of breathlessness and preventing stuffiness, providing a good wearing feeling. Note that the above-mentioned air permeability is a value measured using the method described in JIS L1096-7:2010 "Methods for testing fabrics of woven and knitted fabrics: Method A (Fraquil form method)".

[0027] The fabric (fabric layer 20) has the property that as its thickness increases, the collection efficiency of foreign substances improves, but the pressure loss of the air passing through itself increases (the air permeability decreases). Conversely, as the thickness of the fabric decreases, the collection efficiency of foreign substances decreases, but the pressure loss of the air passing through itself decreases (the air permeability increases). Preferably, the thickness of the fabric is in the range of 0.1 mm to 0.4 mm. When the thickness of the fabric is within the above-mentioned range, it is possible to achieve both a suitable collection efficiency of foreign substances and a reduction in pressure loss. A fabric with a thickness within the above range is preferred because it can suppress the bulkiness of the laminated sheet 16.

[0028] The laminated sheet 16 is obtained by overlapping and joining a soft polyurethane foam sheet and a fabric (see Fig. 5(a)). Examples of the joining method include a method of joining the soft polyurethane foam sheet and the fabric using frame lamination or a hot melt adhesive. As a method of joining using a hot melt adhesive, the soft polyurethane foam sheet and the fabric can be bonded by sandwiching an adhesive layer such as a hot melt adhesive or applying an adhesive by roll coater or spray coating. Also, a method (dry lamination) can be used in which a non-woven hot melt sheet is sandwiched between the soft polyurethane foam sheet and the fabric, heated and pressure-bonded to melt and bond the hot melt material. Note that as the above hot melt material, a thermoplastic hot melt material or a moisture-curing type hot melt material can be used. The laminated sheet 16 may be joined as a whole between the soft polyurethane foam sheet and the fabric, or joined partially, for example, at dot-like intervals at predetermined intervals. However, from the perspective of mutual followability, it is better to join them as a whole.

[0029] The laminated sheet 16 can be formed into a shape corresponding to the left-right half of the mask 10 by punching with a Thomson blade or the like (see Fig. 5(b)). Then, the two laminated sheets 16, 16 are connected at their other sides overlapped in a palm-like shape (see Fig. 5(c)). Thereby, the mask 10 can be formed (see Fig. 5(d)). Note that the two laminated sheets 16, 16 may be joined by welding their overlapped other sides with heat or the like.

[0030] The mask 10 is composed of the laminated sheet 16 including the foam layer 18 and the fabric layer 20, so that functions that cannot be obtained with soft polyurethane foam alone and physical properties lacking in soft polyurethane foam can be complemented by the fabric layer 20. The mask 10 can widen the options of soft urethane foam due to the presence of the fabric layer 20. In the embodiment, since the front side of the mask 10 is the fabric layer 20, it is possible to attach colors, pictures, etc. that were impossible with soft polyurethane foam, and the designability of the mask 10 can be improved by the texture peculiar to the fabric. That is, the commercial value of the mask 10 can be improved. The mask 10 can protect the front side with the fabric layer 20 which is more excellent in abrasion resistance and weather resistance than soft polyurethane foam.

[0031] Since the laminated sheet 16 is composed of the fabric layer 20 made of a fabric having an appropriate elongation rate, the presence of the fabric layer 20 can suppress the inhibition of the necessary expansion and contraction of the foam layer 18 made of soft polyurethane foam. For example, if soft polyurethane foam and a fabric having the same elongation rate are used, the mask 10 can preferably exhibit the elasticity peculiar to soft polyurethane foam, and the periphery of the mask main body 12 can be well adhered to the face, making it difficult for a gap to occur between the face and the mask. And, since it can follow the movement of the mouth or the like and reduce the burden when wearing the mask 10, it is preferable. When using a soft polyurethane foam having a large number of cells per unit area to increase breathability, its elongation rate may become larger than required. When such a soft polyurethane foam having a relatively large elongation rate is used as the foam layer 18, if a fabric having an elongation rate smaller than that of the soft polyurethane foam is used, excessive elongation of the laminated sheet 16 can be suppressed, and damage to the mask 10 can be prevented while ensuring breathability. Thus, according to the mask 10, the function of the fabric layer 20 can be exhibited without disturbing the function of the soft polyurethane foam that is the main body of the mask 10.

[0032] The mask 10 is also composed of the laminated sheet 16 not only for the mask main body 12 but also for the ear hook part 14 connected to the side part of the mask main body 12. Even in this case, since the fabric layer 20 is composed of a fabric having an appropriate elongation rate, the presence of the fabric layer 20 can suppress the inhibition of the necessary expansion and contraction of the foam layer 18 made of soft polyurethane foam. Therefore, the mask 10 can easily cause the ear hook part 14 to lack on the ear due to the appropriate expansion and contraction peculiar to soft polyurethane foam, and can reduce the burden on the ear. The ear hook part 14 can be adhered so that no gap is formed between the mask main body 12 and the face by appropriate pulling during wearing.

[0033] By configuring the mask main body 12 with a plurality of laminated sheets 16 as in the mask 10 of the embodiment, it becomes easier to form the main part covering the mouth and nose according to the shape of the face. Therefore, according to the mask 10, the adhesion to the face can be improved. The mask 10 is less likely to form a gap between the face even when the mouth is moved, and it is possible to prevent foreign substances from entering through the gap. In particular, by making the connection part 22 of the laminated sheet 16 at the center in the left-right direction of the mask main body 12 have a curved shape, when the two laminated sheets 16, 16 are unfolded left and right, the central part in the left-right direction of the mask main body 12 has a three-dimensional shape that bulges to the front side of the mask 10, which is preferable. Here, as the joining method of the connection part 22 in the case where the mask main body 12 is configured with a plurality of laminated sheets 16 as in the connection part 22 of the mask 10, a heat seal method by thermo press molding, ultrasonic welding, joining with an adhesive, joining by sewing, etc. can be mentioned.

[0034] (Test) Masks of the test example and the reference example were produced in the combinations shown in Table 1 in the same shape, and their wearing properties were evaluated. · PUR-A: Soft polyurethane foam (manufactured by Inoac Corporation, product name: MF-80, polyester-based polyurethane foam, elongation rate: 400%, number of cells: 80 cells / 25 mm, defoamed foam) · PUR-B: Soft polyurethane foam (manufactured by Inoac Corporation, product name: SP-80, polyester-based polyurethane foam, elongation rate: 350%, number of cells: 80 cells / 25 mm, non-defoamed foam) · Fabric A: Stretch polyester 50D (material: polyester, crimped multifilament yarn, 50 denier, knitting method: circular knitting, basis weight: 50 g / m 2 ) · Fabric B: Nylon mesh (material: nylon, crimped multifilament yarn, 75 denier, knitting method: mesh knitting, 80 g / m 2 ) · Fabric C: Rayon-based spunlace non-woven fabric (material: rayon, spunlace method (water jet entanglement method), basis weight: 50 g / m 2 ) · Adhesive A: Non-woven hot melt sheet (material: polyamide, basis weight: 13 g / m 2 ) · Adhesive B: Moisture-curing hot melt adhesive (material: polyurethane-based hot melt, coating amount: 20 g / m 2 ) · Dry lamination: A non-woven hot melt sheet was sandwiched between a soft polyurethane foam sheet and a fabric, and heat-pressed at 180 °C for 30 seconds to melt and bond the hot melt material. · Spray coating: The moisture-curing hot melt adhesive melted at 120 °C was spray-coated onto the soft polyurethane foam sheet at 20 g / m 2 coated, the fabric was laminated, and they were bonded together by pressure bonding.

[0035] Wearing comfort is judged by the indicators of stuffiness, sweating feeling, and fitting feeling that the wearer feels when wearing the mask, compared with the reference example. When all indicators are better than the reference example, it is rated as "◎". When any one of the indicators is slightly inferior to the reference example, it is rated as "○". When it is slightly inferior to "○", it is rated as "△". When any one of them is significantly inferior to the reference example, it is rated as "×". The results are shown in Table 1.

[0036]

Table 1

[0037] As shown in Table 1, it was found that for the mask composed of a laminated sheet made of an elastic fabric and a soft polyurethane foam, the function of the fabric layer is exhibited while suppressing the interference with the function of the soft polyurethane foam that is the main body of the mask.

[0038] (Modified example) Not limited to the above-mentioned matters, for example, it may be as follows. (1) In the embodiment, a mask is configured by combining two laminated sheets. However, like the mask 30 shown in FIGS. 6 and 7, the mask 40 shown in FIGS. 8 and 9, or the mask 50 shown in FIG. 10, the entire mask body portion 12 and the left and right ear-hanging portions 14, 14 may be configured with a single laminated sheet 16.

[0039] (2) Like the mask 30 shown in FIGS. 6 and 7 or the mask 40 shown in FIGS. 8 and 9, a folded-back portion 32 may be provided along the upper edge portion of the mask body portion 12. The folded-back portion 32 is configured to be able to displace its posture between a deployed posture extending upward from the mask body portion 12 (see FIGS. 7(a) and 9(a)) and a folded-back posture folded so as to overlap the back side of the mask body portion 12 (see FIGS. 7(b) and 9(b)). In the masks 30, 40, when the folded-back portion 32 is in the folded-back posture, a seal portion 34 formed by the folded-back portion of the folded-back portion 32 can be formed on the upper edge portion of the mask body portion 12. The seal portion 34 may be folded toward the back side (wearer side) to form an inner folded portion 35 (see FIG. 9(c)). The masks 30, 40 can prevent a gap from being formed between the face even when the mouth is moved by the seal portion 34 and prevent foreign substances from entering through the gap. Also, by blocking the gap with the seal portion 34, it is possible to prevent the glasses from fogging due to exhalation. (3) In FIGS. 6 to 9, the folded-back portion is provided along the upper edge portion of the main body portion. However, the present invention is not limited to this, and the folded-back portion may be provided along the lower edge portion of the main body portion. When the folded-back portion is provided at the lower edge portion of the main body portion, a seal portion can be formed at the lower edge portion of the main body portion by folding back the folded-back portion, and the gap between the lower edge portion of the main body portion and the chin can be blocked by the seal portion.

[0040] (4) In the embodiment, the mask is configured with two elastic sheets. However, the mask may be configured by joining three or more elastic sheets so as to have a three-dimensional shape. (5) In the embodiment, an example of wearing the connecting portion facing the front side has been described. However, a configuration in which the connecting portion is worn with the back side facing may also be used. In this case, the foam layer faces the front side and the fabric layer faces the back side. In the embodiment, the foam layer is disposed on the back side and the fabric layer is disposed on the front side. However, the foam layer may be disposed on the front side and the fabric layer may be disposed on the back side. By disposing the fabric layer on the back side, the feel on the skin can be improved and stickiness due to exhalation can be suppressed.

Explanation of Signs

[0041] 12 Mask main body part, 14 Ear hanger part, 16 Laminated sheet, 18 Foam layer, 20 Fabric layer

Claims

1. A mask body covering a part of the face including the mouth, and ear loops provided along the side edges of the mask body, comprising: The mask body is composed of a laminated sheet in which a foam layer made of a soft polyurethane foam having air permeability and elasticity and a fabric layer made of a fabric having air permeability and elasticity overlap each other, The fabric is made using elastic fibers having stretchability, The fabric layer has elasticity that can stretch following the stretching and shrinking of the foam layer joined to each other, The elastic fiber is a fiber subjected to crimping processing, The elongation rate of the laminated sheet (JIS K6400-5:2004 dumbbell No. 2 type) is 160% or more A mask characterized by this.

2. A mask body covering a part of the face including the mouth, and ear loops provided along the side edges of the mask body, comprising: The mask body is composed of a laminated sheet in which a foam layer made of a soft polyurethane foam having air permeability and elasticity and a fabric layer made of a fabric having air permeability and elasticity overlap each other, The laminated sheet is obtained by bonding the foam layer and the fabric layer with a moisture-curing hot melt adhesive, The fabric layer has elasticity that can stretch following the stretching and shrinking of the foam layer joined to each other A mask characterized by this.

3. A mask body covering a part of the face including the mouth, and ear loops provided along the side edges of the mask body, comprising: The mask body is composed of a laminated sheet in which a foam layer made of a soft polyurethane foam having air permeability and elasticity and a fabric layer made of a fabric having air permeability and elasticity overlap each other, The fabric layer has elasticity that can stretch following the stretching and shrinking of the foam layer joined to each other, A folding portion is provided along the upper edge portion of the mask body, The folding portion is configured to be capable of changing its posture between an unfolded posture extending upward from the mask body and a folded posture folded so as to overlap the back side of the mask body A mask characterized by this.

4. A mask body covering a part of the face including the mouth, and ear loops provided along the side edges of the mask body, comprising: The mask body is composed of a laminated sheet consisting of only two layers in which a foam layer made of a soft polyurethane foam having air permeability and elasticity and a fabric layer made of a fabric having air permeability and elasticity overlap each other, The fabric layer has elasticity that can stretch and contract following the stretching and contracting of the foam layers joined to each other, and the fabric layer is arranged so as to touch the wearer's face. A mask characterized by this.

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