Mask sheets and masks

Abstract

A mask sheet (20) is joined to a nonwoven fabric (10) containing heat-fusible fibers to form a mask (1), characterized in that the mask sheet (20) includes: a gauze (40) which is arranged at a position closer to the skin side than the nonwoven fabric (10); and a heat-fusible fiber layer (50) which is at least provided between the gauze (40) and the nonwoven fabric (10), and a part of the fibers (51) of the heat-fusible fiber layer (50) are interwoven with the gauze (40).

Description

Technical Field

[0001] The present invention relates to a mask sheet and a mask. Background Art

[0002] As a mask, there is a known structure in which a nonwoven fabric and a gauze made of cellulose fibers such as cotton are joined to form a mask body. For example, Patent Document 1 discloses a mask in which a nonwoven fabric containing heat-fusible fibers is integrated with a gauze by heat fusion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Utility Model Application Laid-Open No. 3-41459 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, in the above-mentioned mask, only the molten fiber (thermal fusion fiber) of the nonwoven fabric enters the gauze cloth to form a whole, and there is a problem that the bonding strength between the nonwoven fabric and the gauze is weak and easy to peel off. If the nonwoven fabric and the gauze are peeled off, the gauze on the skin side may stick to the corner of the wearer's mouth, making it difficult to breathe.

[0008] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it difficult for nonwoven fabric and gauze to be peeled off.

[0009] Solutions for solving problems

[0010] The main invention for achieving the above-mentioned purpose is a mask sheet, which is joined to a non-woven fabric containing heat-fusible fibers to form a mask, and is characterized in that the mask sheet includes: gauze, which is arranged at a position closer to the skin side than the non-woven fabric; and a heat-fusible fiber layer, which is at least arranged between the gauze and the non-woven fabric, and a part of the fibers of the heat-fusible fiber layer are interwoven with the gauze.

[0011] Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0012] Effects of the Invention

[0013] According to the present invention, it is possible to make the nonwoven fabric and the gauze less likely to be peeled off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a plan view of the mask 1 as viewed from the non-skin side.

[0015] Figure 2This is a plan view of the mask 1 as viewed from the skin side.

[0016] Figure 3 It is along Figure 1 The X-X line cross-sectional view.

[0017] Figure 4 This is a partially enlarged view of the mask sheet 20 when viewed from the skin side.

[0018] Figure 5 The figure shows a state where the mask sheet 20 is separated into the gauze 40 and the thermally fusible fiber web 50 .

[0019] Figure 6 It is along Figure 4 Cross-sectional view along the Y-Y line. DETAILED DESCRIPTION

[0020] At least the following matters are clarified from the description of this specification and the drawings.

[0021] A mask sheet, which is joined to a nonwoven fabric containing heat-fusible fibers to form a mask, characterized in that the mask sheet includes: gauze, which is arranged at a position closer to the skin side than the nonwoven fabric; and a heat-fusible fiber layer, which is at least provided between the gauze and the nonwoven fabric, and a part of the fibers of the heat-fusible fiber layer are interwoven with the gauze.

[0022] According to such a mask sheet, the nonwoven fabric and the heat-fusible fiber layer can be reliably joined (heat-fused) by heating, and in addition, since the fibers of the heat-fusible fiber layer are interwoven with the gauze, the gauze is not easy to peel off from the heat-fusible fiber layer. Therefore, the nonwoven fabric and the gauze can be made not easy to peel off.

[0023] In the mask sheet, preferably, at least a portion of fibers of the thermally fusible fiber layer interwoven with the gauze protrudes from a skin-side surface of the gauze.

[0024] According to such a mask sheet, it is also easy to join components (comprising components of fusible fibers) on the skin side of gauze. In addition, the joining portion joined with the ear hooks etc. of the side can be made firm.

[0025] In the mask sheet, preferably, among the fibers interwoven with the gauze in the thermally fusible fiber layer, the number of fibers protruding from the skin side of the gauze is smaller than the number of fibers not protruding from the skin side.

[0026] According to such a mask sheet, the irritation when wearing the mask can be reduced and the skin feel is better.

[0027] In the mask sheet, preferably, in the thermally fusible fiber layer, the fiber amount per unit area on the non-skin side of the gauze is larger than the fiber amount per unit area on the skin side.

[0028] According to such a mask sheet, it is possible to improve the bonding strength with the nonwoven fabric while maintaining a good feel against the skin.

[0029] The mask sheet is preferably configured such that the heat-fusible fiber layer includes a skin-side extending portion provided at a position closer to the skin side than the gauze and a non-skin-side extending portion provided at a position closer to the non-skin side than the gauze, and the maximum thickness of the non-skin-side extending portion is greater than the maximum thickness of the skin-side extending portion.

[0030] According to such a mask sheet, it is possible to improve the bonding strength with the nonwoven fabric while maintaining a good feel against the skin.

[0031] In the mask sheet, the mask is preferably of a pleated type, and the skin-side surfaces of the gauze are folded so as to overlap each other and joined at ends in the width direction.

[0032] According to such a mask sheet, the mask utilizing the pleated structure can suppress the separation of the nonwoven fabric and the gauze, and is more effective.

[0033] In the mask sheet, the thermally fusible fiber layer preferably includes hydrophilic fibers and hydrophobic fibers.

[0034] According to such mask sheet, by comprising hydrophilic fiber, thereby can absorb moisture (wearer's breath, sweat etc.), can keep the environment in the mask as comfortable.In addition, by comprising hydrophobic fiber, thereby water is dispersed, air permeability is better.

[0035] In the mask sheet, preferably, the nonwoven fabric further includes non-thermally fusible fibers.

[0036] According to such a mask sheet, the degree of welding can be appropriately controlled.

[0037] In addition, a mask is characterized in that the mask includes: gauze, which is arranged at a position closer to the skin side than the non-woven fabric; and a thermally fusible fiber layer, which is at least arranged between the gauze and the non-woven fabric and joined to the non-woven fabric, and a portion of the fibers of the thermally fusible fiber layer are interwoven with the gauze.

[0038] According to such a mask, the nonwoven fabric and gauze can be prevented from being easily peeled off.

[0039] ===Implementation Method===

[0040] <Structure of mask 1>

[0041] Figure 1 This is a plan view of the mask 1 as viewed from the non-skin side. Figure 2 This is a plan view of the mask 1 as viewed from the skin side. Figure 3 It is along Figure 1 The mask 1 has an up-down direction, a left-right direction, and a thickness direction that are orthogonal to each other. The side opposite to the wearer's skin in the thickness direction (the side relatively close to the wearer's skin when the mask 1 is worn) is set as the skin side, and the opposite side is set as the non-skin side. The side (nose side) located vertically above when the mask 1 is worn in the up-down direction is set as the upper side, and the opposite side (chin side) is set as the lower side. In addition, the side on the right side of the wearer when the mask 1 is worn in the left-right direction (the right side when viewed from the skin side) is set as the right side, and the opposite side is set as the left side. In addition, the left-right direction is equivalent to the width direction.

[0042] like Figure 1 , Figure 2 As shown, the mask 1 of this embodiment includes a mask body 3 for covering the wearer's face (corners of the mouth, nose) and ear hooks 5 extending from the mask body 3.

[0043] The ear hooks 5 are parts that are hung on the ears of the wearer, and a pair of ear hooks 5 are provided at both ends (right end 3c, left end 3d) in the left and right directions of the mask body 3 in a manner corresponding to the two ears of the wearer. In addition, the ear hooks 5 are joined to the non-skin side surface of the mask body 3. The ear hooks 5 are preferably elastically stretchable, and can be formed of, for example, a known material such as a rubber band, a nonwoven fabric, a woven fabric, or a plastic film.

[0044] like Figure 1 and Figure 2 As shown, the mask body 3 is a rectangular shape that is long in the left-right direction when viewed from above before being worn (unused). In addition, the mask body 3 of this embodiment is a folded shape that is folded into a folded shape and bulges toward the non-skin side when worn. The mask body 3 is folded in a stepwise manner in the up-down direction using a plurality of folds (the folded back portion 35 described later) formed between the right end 3c and the left end 3d, thereby forming a plurality of folds 30. The above-mentioned plurality of folds are unfolded when the mask 1 is worn except for the two ends in the left-right direction.

[0045] The mask body 3 of the present embodiment is mainly composed of a nonwoven fabric 10 and a mask sheet 20 .

[0046] The nonwoven fabric 10 can be formed by appropriately selecting a material with good air permeability from various known synthetic fiber nonwoven fabrics such as meltblown nonwoven fabrics, spunbonded nonwoven fabrics, SMS nonwoven fabrics, and hot air nonwoven fabrics. The nonwoven fabric 10 of the present embodiment is configured to include heat-fusible fibers (thermoplastic fibers). As heat-fusible fibers, polyolefin fibers such as polyethylene (PE) fibers and polypropylene (PP) fibers, polyester fibers, polyamide fibers such as nylon, etc. can be cited. In addition, the nonwoven fabric 10 can also include fibers other than heat-fusible fibers (i.e., non-heat-fusible fibers). Thus, the degree of fusion can be appropriately controlled when forming a fusion bond 36 (described later) by adjusting the amount of non-heat-fusible fibers.

[0047] The mask sheet 20 is a sheet member disposed on the skin side relative to the nonwoven fabric 10, and is composed of a gauze 40 and a thermally fusible fiber web 50 (corresponding to a thermally fusible fiber layer). The mask sheet 20 will be described in detail later.

[0048] Furthermore, the mask body 3 of the present embodiment is provided with a holding member 31 , a side panel 32 , a notch portion 33 , a nose mask portion 34 , a folded portion 35 , and a welded portion 36 .

[0049] The holding member 31 is a thin rectangular member provided on the upper end 3a side of the mask body 3, and is a member for maintaining the upper edge portion in a predetermined shape. The holding member 31 is disposed between the folded back portions of the mask body 3 (the portion folded by the mountain-shaped folded portion 35a described later), and is fixed so as not to be misaligned by a plurality of welded portions 36 formed around it.

[0050] The holding member 31 is preferably formed of a flexible thermoplastic resin (such as plastic) or the like. Such a holding member 31 can be easily bent by the wearer, and once deformed into a predetermined shape, the predetermined shape is maintained as long as no external force is applied again. Therefore, if the wearer deforms the holding member 31 to match the shape of the nose after wearing the mask 1, the holding member 31 keeps the vicinity of the upper end of the mask body 3 in a state that matches the shape of the wearer's nose. As a result, it is possible to suppress the generation of a gap between the upper edge of the mask body 3 and the wearer's face.

[0051] The side piece 32 is provided to cover the skin side and the non-skin side of the right end 3c and the left end 3d of the mask body 3. That is, the side piece 32 is fixed (joined) in a state of sandwiching the ends of the nonwoven fabric 10 and the mask sheet 20 in the left and right directions in the thickness direction. By providing such a side piece 32, it is possible to suppress the yarn (the structural yarn 41 described later) at the end of the gauze 40 from scattering, and in addition, it is possible to improve the joining strength with the ear hook 5 and the like.

[0052] The side panels 32 can be formed by appropriately selecting a material with good air permeability from various known synthetic fiber nonwoven fabrics such as meltblown nonwoven fabrics, spunbonded nonwoven fabrics, SMS nonwoven fabrics, and hot air nonwoven fabrics, similarly to the nonwoven fabric 10. In addition, materials formed from woven fabrics and knitted fabrics can also be used as the side panels 32. However, since it is preferably not easy to irritate the wearer's skin (face), nonwoven fabrics are preferred.

[0053] The notch 33 is respectively provided (a pair is provided) at both ends (right end 3c, left end 3d) in the left-right direction of the nonwoven fabric 10 and the mask sheet 20 constituting the mask body 3, and is covered by the side sheet 32. In addition, the notch 33 is formed into a shape that is concave toward the central part of the left-right direction of the mask body 3, and more specifically, it is a roughly letter V shape whose length in the vertical direction gradually shortens as it goes from the left-right end toward the center. However, it is not limited to this shape, and it can also be a single or multiple linear, curved, and other well-known shapes. By providing the notch 33, the notch 33 is easy to become the starting point of deformation and deform when the mask 1 is used, so that the closeness with the wearer's face can be improved (improving the fit of the mask body 3 to the face).

[0054] The nose mask portion 34 extends downward from the upper end 3a on the skin side of the mask body 3, with the upper end being a fixed end and the lower end being a free end. More specifically, the nose mask portion 34 is joined to the mask body 3 (here, the nonwoven fabric 10) folded back toward the skin side at the upper end 3a by welding or using a hot melt adhesive. The nose mask portion 34 is made of the same nonwoven fabric as the nonwoven fabric 10. The nose mask portion 34 can further prevent the gauze 40 of the mask sheet 20 from touching the wearer's face (nose part), and can suppress the discomfort caused by wearing the mask 1. In addition, the nose mask portion 34 may be absent.

[0055] The folded portion 35 is a portion where the nonwoven fabric 10 and the mask sheet 20 constituting the mask body 3 are folded back. Figure 3 As shown, a plurality of mountain-shaped folded portions 35a are formed by folding the skin-side of the mask sheet 20 to overlap each other, and a valley-shaped folded portion 35b is formed by folding the non-skin-side of the nonwoven fabric 10 to overlap each other. Thus, a plurality of pleated portions 30 are formed in the mask body 3.

[0056] In addition, in the mountain-shaped folded portion 35a of the lower end 3b, only the nonwoven fabric 10 is folded back, and the folded back nonwoven fabric 10 is joined to the skin side of the mask sheet 20 (see Figure 2 , Figure 3). In addition, in the mountain-shaped folded portion 35a of the upper end 3a, the folded mask body 3 is joined with the holding member 31 sandwiched therebetween, and the nose mask portion 34 is joined on the skin side thereof as described above. In the mask sheet 20 of the present embodiment, as described later, there are layers of heat-fusible fibers on both sides of the gauze 40, so that it can be reliably joined at the folded portion as described above.

[0057] In addition, at the ends in the left-right direction (right end 3c, left end 3d), the nonwoven fabric 10 and the mask sheet 20 are folded into a pleated state and sandwiched in the thickness direction by the side sheet 32. Here, too, by using the mask sheet 20, the bonding strength between the folded portions can be improved. Therefore, the bonding strength of this portion is improved, so the side sheet 32 ​​can also be omitted.

[0058] The welding part 36 is a part where each component is joined by heat welding, and a plurality of them are provided in the mask body 3. In addition, a pattern 36a formed by a pattern in which a plurality of tiny welding parts 36 are arranged is provided in the lower left part of the mask body 3 of the present embodiment. In the mask 1 of the present embodiment, as the pattern 36a, letters (abc) are formed. By providing such a pattern 36a, it is easy to identify the front and back (skin side, non-skin side) of the mask 1, and it is possible to prevent the error of the wearing direction of the mask 1. In particular, in the present embodiment, by using the mask sheet 20, it is possible to easily make the pattern 36a conspicuous. In addition, the pattern 36a is not limited to the illustrated form, as long as it is a form (asymmetric form) that can identify the front and back (skin side, non-skin side) of the mask 1. For example, it can also be text, marks, graphics, arrows, etc. other than letters.

[0059] <Structure of mask sheet 20>

[0060] As described above, the mask body 3 of the present embodiment is mainly composed of two sheet members, namely the nonwoven fabric 10 containing thermally fusible fibers and the mask sheet 20. The mask sheet 20 has the gauze 40 formed of cotton yarn or the like.

[0061] Assuming that the nonwoven fabric 10 and the gauze 40 are directly joined by heat fusion, since the gauze 40 does not contain heat-fusible fibers, the molten fibers of the nonwoven fabric 10 will enter the state of the fabric of the gauze 40 and be integrated. In this case, the bonding strength between the nonwoven fabric 10 and the gauze 40 is weak and easy to peel off. If the nonwoven fabric 10 and the gauze 40 are peeled off, it is possible that the gauze 40 will stick to the corner of the wearer's mouth, making it difficult for the wearer to breathe. Therefore, in this embodiment, the nonwoven fabric 10 and the gauze 40 are not easy to peel off by using the mask sheet 20.

[0062] Figure 4This is a partial enlarged view of the mask sheet 20 when viewed from the skin side. Figure 5 2 is a diagram showing a state where the mask sheet 20 is separated into the gauze 40 and the heat-fusible fiber web 50. Figure 4 and Figure 5 As shown, the mask sheet 20 is a sheet member formed by intertwining the gauze 40 and the fibers 51 (thermal fusible fibers) of the thermal fusible fiber web 50 (the gauze 40 and the thermal fusible fiber web 50 are interwoven) and integrated. The manufacturing method of the mask sheet 20 formed by interweaving the gauze 40 and the thermal fusible fiber web 50 will be described later.

[0063] like Figure 4 As shown, the gauze 40 is composed of a structural yarn 41 woven into a grid shape. The structural yarn 41 has a plurality of warp yarns 42 and a plurality of weft yarns 43 intersecting the warp yarns 42, forming a plurality of woven meshes 45 (through areas surrounded by the warp yarns 42 and the weft yarns 43) formed by intersecting each other in the thickness direction. The structural yarn 41 of the gauze 40 is a twisted yarn formed by twisting the original yarn formed by cotton yarn (cotton fiber). In addition to cotton fiber, the material of the original yarn can also appropriately use cellulose fibers such as natural cellulose fibers such as hemp and pulp fibers, regenerated cellulose fibers such as rayon, and semi-synthetic cellulose fibers such as acetate fibers. As the cotton yarn used for the original yarn, a material with a cotton count of 10 to 100 is preferably used. In addition, the weaving method of the gauze 40 is not limited to a plain weave woven into a grid shape, and known weaving methods such as twill weave, satin weave, and gauze weave can be appropriately used.

[0064] The heat-fusible fiber web 50 (heat-fusible fiber layer) is a fiber aggregate formed by a known manufacturing method such as a spunbond method using long fibers, a dry method in which short fibers are combed in a constant direction using a carding machine to arrange the fibers to form a fiber web, and is a state before being formed into a nonwoven fabric. As the fibers 51 of the heat-fusible fiber web 50, the heat-fusible fibers mentioned in the description of the nonwoven fabric 10 can be used. In addition, the heat-fusible fiber web 50 is not limited to being formed by a carding method using a carding machine, and a material formed by a method such as an air-laid method, a wet method, a spunbond method, and a melt-blown method can also be used.

[0065] The heat-fusible fiber web 50 of this embodiment is provided at least between the gauze 40 and the nonwoven fabric 10 (see Figure 6 ), a part of the fiber 51 is interwoven with the gauze 40. Thus, the nonwoven fabric 10 containing the heat-fusible fiber and the heat-fusible fiber web 50 can be reliably joined (fused) by heating, and further, since the fiber 51 of the heat-fusible fiber web 50 is interwoven with the gauze 40, the gauze 40 is not easily peeled off from the heat-fusible fiber web 50. Therefore, the nonwoven fabric 10 and the gauze 40 can be made not easily peeled off.

[0066] The fiber density of the heat-bonding fiber web 50 is, for example, 2.8×10 -3 g / cm 3 ~3.5×10 -3 g / cm 3 , the unit area weight (weight per unit area) is, for example, 20 g / m 2 ~70g / m 2 The thickness of the heat-bonding fiber web 50 is, for example, 7 mm to 20 mm, and the length of the fibers of the heat-bonding fiber web 50 is, for example, 1 mm to 100 mm. The fineness of the heat-bonding fiber web 50 is, for example, 0.1 dtex to 6 dtex.

[0067] In addition, in the heat-fusible fiber web 50 of the present embodiment, hydrophilic fibers and hydrophobic fibers are included as fibers 51. As hydrophobic fibers, polyester-based fibers including polyethylene terephthalate (PET), polyolefin-based fibers including polypropylene (PP) and polyethylene (PE), composite fibers with a core-skin structure formed by PP and PE, and parallel composite fibers can be used. As hydrophilic fibers, for example, rayon, heat-fusible fibers that have been subjected to a hydrophilic treatment, and composite fibers can be cited. In addition, the hydrophilic treatment refers to a treatment that reduces the contact angle of the fiber surface by applying a surfactant on the surface, thereby modifying the fiber to be hydrophilic. At this time, as preferred surfactants used, nonionic surfactants such as hydrophilic silicone oil, anionic surfactants, cationic surfactants, amphoteric surfactants, etc. can be cited.

[0068] By making the heat-fusible fiber web 50 contain hydrophilic fibers, it is possible to absorb moisture (exhalation, sweat, etc. of the wearer), and the environment inside the mask (between the mask 1 and the wearer's face) can be kept comfortable. In addition, by making the heat-fusible fiber web 50 contain hydrophobic fibers, moisture is dispersed, and air permeability is better.

[0069] In addition, when the heat-fusible fiber web 50 includes hydrophilic fibers and hydrophobic fibers, the mixing ratio of the hydrophilic fibers and the hydrophobic fibers is preferably such that the weight of the hydrophobic fibers contained per unit volume is greater than the weight of the hydrophilic fibers contained per unit volume. This makes it easier to disperse water and improves air permeability.

[0070] As a method for interweaving the gauze 40 and the heat-fusible fiber web 50 into one (a method for manufacturing the mask sheet 20), for example, a well-known water flow interweaving method can be used. In the manufacturing process of the liquid-permeable sheet using the water flow interweaving method, a high-pressure water flow is sprayed from a plurality of nozzles arranged at intervals in a direction intersecting the conveying direction of the continuous laminate, which is a raw material of the gauze 40, that is, a continuous grid-shaped textile fabric, and a collection of continuous fibers that are stacked on the upper surface (here, the non-skin side 40a) of the raw material of the heat-fusible fiber web 50. That is, like Figure 5 In this way, the heat-fusible fiber web 50 is overlapped on the gauze 40, and a high-pressure water flow is sprayed from the upper side (non-skin side) toward the lower side. As a result, the structural fibers (fibers 51) of the heat-fusible fiber web 50 and the structural yarns 41 of the gauze 40 can be entangled and integrated. In addition, the pressure of the water can also be used to give a pattern to the integrated sheet.

[0071] When water interweaving is performed, the continuous laminated body formed by laminating the continuous gauze 40 and the continuous heat-fusible fiber web 50 is transported by a conveying member composed of a metal mesh belt, and when a high-pressure water flow is sprayed from a nozzle to the upper surface of the continuous laminated body, the fibers 51 of the heat-fusible fiber web 50 and the structural yarns 41 of the gauze 40 are interwoven on the upper surface side, and the water flow splashed back by hitting the conveying member is also used to interweave on the lower surface side opposite to the conveying member. In addition, according to the water interweaving method, it is possible to obtain a mask sheet 20 having desired sheet characteristics in terms of thickness, mass, absorption speed, sheet strength, etc. by appropriately changing the structure of the mesh belt of the conveying member.

[0072] Figure 6 It is along Figure 4 The cross-sectional view along the line YY in FIG. 1 shows the nonwoven fabric 10 on the non-skin side of the mask sheet 20 by an imaginary line. Figure 6 In the mask sheet 20, the fibers 51 of the heat-fusible fiber web 50 are interwoven with the gauze 40, and a portion of the fibers 51 interwoven with the gauze 40 protrudes (extends) from the skin side 40b of the gauze 40. As a result, it is easy to join components (components including heat-fusible fibers, etc.) to the skin side 40b of the gauze 40. For example, it is easy to join the folded nonwoven fabric 10 to the skin side of the mask sheet 20 (the skin side 40b of the gauze 40) at the lower end 3b of the mask body 3. In addition, the joined portion joined to the ear hook 5, etc. can be made firm.

[0073] Thus, the heat-fusible fiber web 50 includes a skin-side extension portion 52 provided at a position closer to the skin side than the skin-side side 40b of the gauze 40, and a non-skin-side extension portion 53 provided at a position closer to the non-skin side than the non-skin-side side 40a of the gauze 40. The non-skin-side extension portion 53 is a portion formed by directly spraying a high-pressure water jet when forming by the water jet interlacing method. On the other hand, the skin-side extension portion 52 is a portion that penetrates between the lattice-shaped structural yarns 41 and the structural yarns 41 of the gauze 40 located below when the high-pressure water jet is sprayed and extends to the mesh belt side as a conveying member.

[0074] In the mask sheet 20 of the present embodiment manufactured in this way, the number of fibers 51 protruding from the skin side 40b of the gauze 40 among the fibers 51 interwoven with the gauze 40 of the heat-fusible fiber web 50 is smaller than the number of fibers 51 not protruding from the skin side 40b. By reducing the number of fibers 51 protruding from the skin side 40b of the gauze 40 in this way, the irritation when wearing the mask 1 can be reduced, and the skin touch becomes better.

[0075] In addition, for example, a manufacturing method other than the water jet interlacing method may be used to make the number of fibers 51 protruding from the skin side 40b of the gauze 40 among the fibers 51 interlaced with the gauze 40 of the heat-fusible fiber web 50 greater than the number of fibers 51 not protruding from the skin side 40b. In this case, by making the number of fibers 51 protruding from the skin side 40b of the gauze 40 greater, the entanglement on the skin side 40b side becomes stronger, and the gauze 40 becomes less likely to be peeled off from the heat-fusible fiber web 50. Therefore, the nonwoven fabric 10 and the gauze 40 become less likely to be peeled off.

[0076] In addition, if Figure 6 As shown, the heat-fusible fiber web 50 preferably has a fiber amount per unit area on the non-skin side 40a side (non-skin side extension 53) of the gauze 40 greater than the fiber amount per unit area on the skin side 40b side (skin side extension 52). Thus, the bonding strength with the nonwoven fabric 10 can be improved while maintaining a good skin touch.

[0077] In addition, Figure 6In the embodiment, it is preferable that when the thickness from the skin side 40b of the gauze 40 to the point 51a where the skin side extension part 52 extends to the position closest to the skin side is set as the maximum thickness D1 of the skin side extension part 52, and the thickness from the non-skin side 40a of the gauze 40 to the point 51b where the non-skin side extension part 53 extends to the position closest to the non-skin side is set as the maximum thickness D2 of the non-skin side extension part 53, the maximum thickness D2 of the non-skin side extension part 53 is greater than the maximum thickness D1 of the skin side extension part 52. By making the maximum thickness D2 of the non-skin side extension part 53 of the heat-fusible fiber web 50 larger in this way, the bonding strength with the nonwoven fabric 10 can be improved while maintaining a good skin touch.

[0078] In addition, the maximum thickness D1 and the maximum thickness D2 are apparent thicknesses. For the measurement of the thickness dimensions, for example, the mask sheet 20 is first preferably cut along the thickness direction of the heat-fusible fiber web 50, and an enlarged photograph of the cut surface is taken using a digital microscope VHX-1000 manufactured by Keyence Corporation. Based on the enlarged photograph, the separation dimension (D1) from the skin side 40b of the gauze 40 to the point 51a of the skin side extension portion 52 extending to the position closest to the skin side is measured, and the separation dimension (D2) from the non-skin side 40a of the gauze 40 to the point 51b of the non-skin side extension portion 53 extending to the position closest to the non-skin side is measured. In this way, the thickness dimensions (maximum thickness D1 and maximum thickness D2) can be measured.

[0079] [Table 1]

[0080]

[0081] Table 1 shows the measurement results of the peel strength between the gauze 40 and the nonwoven fabric 10. The peel strength between the gauze 40 and the nonwoven fabric 10 was measured for the gauze 40 alone and for the gauze 40 interwoven with the thermally fusible fiber web 50 (two types with different amounts of thermally fusible fibers).

[0082] The peel strength was measured by clamping the sample (sample width: 25 mm) between the chucks of Autograph manufactured by SHIMADZU Co., Ltd. at a test speed of 100 mm / min. Each value in Table 1 shows the maximum point test force in the measurement.

[0083] In Table 1, the peel strength of the method in which the heat-fusible fiber web 50 is interwoven with the gauze 40 is higher than the peel strength of the method in which the gauze 40 is alone. In addition, the greater the amount of heat-fusible fibers, the higher the peel strength. Thus, it is confirmed that the gauze 40 and the nonwoven fabric 10 can be made difficult to peel off by interweaving the heat-fusible fiber web 50 with the gauze 40 (formed into the mask sheet 20).

[0084] As described above, the mask 1 of the present embodiment includes the nonwoven fabric 10 containing thermally fusible fibers and the mask sheet 20 joined to the nonwoven fabric 10. The mask sheet 20 includes the gauze 40 disposed on the skin side of the nonwoven fabric 10 and the thermally fusible fiber web 50 provided at least between the gauze 40 and the nonwoven fabric 10, and a portion of the fibers 51 (thermal fusible fibers) of the thermally fusible fiber web 50 are interwoven with the gauze 40.

[0085] Thus, the nonwoven fabric 10 and the heat-fusible fibers of the heat-fusible fiber web 50 can be reliably joined (heat-fused) by heating, and since the fibers 51 of the heat-fusible fiber web 50 are interwoven with the gauze 40, it is not easy to peel off the gauze 40 from the heat-fusible fiber web 50. Therefore, the nonwoven fabric 10 and the gauze 40 can be made not easy to peel off.

[0086] ===Other Implementation Methods===

[0087] The above describes the embodiments of the present invention, but the above embodiments are intended to make the present invention easy to understand and are not intended to limit the present invention. In addition, it is self-evident that the present invention can be changed and improved without departing from its main purpose, and equivalent inventions are included in the present invention. For example, the following deformations can be performed.

[0088] In the above-mentioned embodiment, the mask 1 (mask body 3) is a pleated type, but it is not limited to this. For example, it can also be a flat type, a three-dimensional type, a cup type, etc. However, as described above, by having a layer of a heat-fusible fiber mesh 50 on the skin side 40b side and the non-skin side 40a side of the gauze 40, it is easy to join the surfaces of the mask sheet 20 in a folded state (the skin side 40b of the gauze 40). Therefore, it is more effective in the case of a pleated type.

[0089] In the above-mentioned embodiment, the mask body 3 is formed by laminating the nonwoven fabric 10 and the mask sheet 20, but the present invention is not limited thereto. For example, other sheet members (nonwoven fabric, etc.) may be further laminated.

[0090] Description of Reference Numerals

[0091] 1. Mask; 3. Mask body; 3a. Upper end; 3b. Lower end; 3c. Right end; 3d. Left end; 5. Ear hook; 10. Non-woven fabric; 20. Mask sheet; 30. Pleated portion; 31. Retaining member; 32. Side piece; 33. Notch portion; 34. Nose mask portion; 35. Folded portion; 35a. Mountain-shaped folded portion; 35b. Valley-shaped folded portion; 36. Welded portion; 36a. Pattern; 40. Gauze; 40a. Non-skin side; 40b. Skin side; 41. Structural yarn; 42. Warp yarn; 43. Weft yarn; 45. Woven mesh; 50. Thermally fusible fiber web (thermal fusible fiber layer); 51. Fiber; D1, D2, maximum thickness.

Claims

1. A mask sheet, which is joined to a nonwoven fabric containing thermally fusible fibers to form a mask, characterized in that: The mask sheet includes: a gauze disposed closer to the skin than the nonwoven fabric; and a heat-fusible fiber layer provided at least between the gauze and the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, Among the fibers interwoven with the gauze in the thermally fusible fiber layer, the number of fibers protruding from the skin side of the gauze is smaller than the number of fibers not protruding from the skin side.

2. A mask sheet, which is joined to a nonwoven fabric containing thermally fusible fibers to form a mask, characterized in that: The mask sheet includes: a gauze disposed closer to the skin than the nonwoven fabric; and a heat-fusible fiber layer provided at least between the gauze and the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, In the thermally fusible fiber layer, the fiber amount per unit area on the non-skin side of the gauze is larger than the fiber amount per unit area on the skin side.

3. A mask sheet, which is joined to a nonwoven fabric containing thermally fusible fibers to form a mask, characterized in that: The mask sheet includes: a gauze disposed closer to the skin than the nonwoven fabric; and a heat-fusible fiber layer provided at least between the gauze and the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, The thermally fusible fiber layer includes a skin-side extending portion located closer to the skin side than the gauze and a non-skin-side extending portion located closer to the non-skin side than the gauze, and the maximum thickness of the non-skin-side extending portion is greater than the maximum thickness of the skin-side extending portion.

4. The mask sheet according to any one of claims 1 to 3, wherein The mask is a pleated type, The skin-side surfaces of the gauze are folded over each other in an overlapping manner and joined at ends in the width direction.

5. The mask sheet according to any one of claims 1 to 3, wherein The thermally fusible fiber layer includes hydrophilic fibers and hydrophobic fibers.

6. The mask sheet according to any one of claims 1 to 3, wherein: The nonwoven fabric further includes non-thermally fusible fibers.

7. A mask, characterized in that: The mask includes: A nonwoven fabric comprising thermally fusible fibers; a gauze disposed closer to the skin than the nonwoven fabric; and a heat-bonding fiber layer, which is provided at least between the gauze and the nonwoven fabric and is bonded to the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, Among the fibers interwoven with the gauze in the thermally fusible fiber layer, the number of fibers protruding from the skin side of the gauze is smaller than the number of fibers not protruding from the skin side.

8. A mask, characterized in that: The mask includes: A nonwoven fabric comprising thermally fusible fibers; a gauze disposed closer to the skin than the nonwoven fabric; and a heat-bonding fiber layer, which is provided at least between the gauze and the nonwoven fabric and is bonded to the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, In the thermally fusible fiber layer, the fiber amount per unit area on the non-skin side of the gauze is larger than the fiber amount per unit area on the skin side.

9. A mask, characterized in that: The mask includes: A nonwoven fabric comprising thermally fusible fibers; a gauze disposed closer to the skin than the nonwoven fabric; and a heat-bonding fiber layer, which is provided at least between the gauze and the nonwoven fabric and is bonded to the nonwoven fabric, A part of the fibers of the heat-fusible fiber layer is interwoven with the gauze, At least a portion of the fibers of the heat-bondable fiber layer interwoven with the gauze protrudes from the skin side of the gauze, The thermally fusible fiber layer includes a skin-side extending portion located closer to the skin side than the gauze and a non-skin-side extending portion located closer to the non-skin side than the gauze, and the maximum thickness of the non-skin-side extending portion is greater than the maximum thickness of the skin-side extending portion.

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