CN114845592A - Mask sheet and mask - Google Patents
Mask sheet and mask Download PDFInfo
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- CN114845592A CN114845592A CN202080089242.6A CN202080089242A CN114845592A CN 114845592 A CN114845592 A CN 114845592A CN 202080089242 A CN202080089242 A CN 202080089242A CN 114845592 A CN114845592 A CN 114845592A
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- mask
- gauze
- fibers
- skin
- heat
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A mask sheet (20) joined to a nonwoven fabric (10) containing heat-fusible fibers to form a mask (1), the mask sheet (20) comprising: a gauze (40) disposed on the skin side of the nonwoven fabric (10); and a heat-fusible fiber layer (50) provided at least between the gauze (40) and the nonwoven fabric (10), wherein a part of the fibers (51) of the heat-fusible fiber layer (50) is interlaced with the gauze (40).
Description
Technical Field
The present invention relates to a mask sheet and a mask.
Background
As a mask, a structure in which a nonwoven fabric and a gauze made of cellulose fibers such as cotton are joined to form a mask body is known. For example, patent document 1 discloses a mask in which a nonwoven fabric containing heat-fusible fibers is used and integrated with gauze by heat-fusing.
Documents of the prior art
Patent document
Patent document 1: japanese Kokai publication Hei-3-41459
Disclosure of Invention
Problems to be solved by the invention
However, in the mask as described above, only the molten fibers (heat-fusible fibers) of the nonwoven fabric are integrated with the gauze fabric, and there is a problem that the nonwoven fabric and the gauze are weak in bonding strength and easily peeled off. If the nonwoven fabric and the gauze are peeled off, the gauze on the skin side may stick to the corners of the mouth of the wearer, and breathing may be difficult.
The present invention has been made in view of the above-mentioned problems, and an object thereof is to make it difficult to peel a nonwoven fabric and a scrim.
Means for solving the problems
A main aspect of the present invention for achieving the above object is a mask sheet joined to a nonwoven fabric including heat-fusible fibers to form a mask, the mask sheet including: a gauze disposed on the skin side of the nonwoven fabric; and a heat-fusible fiber layer at least provided between the gauze and the nonwoven fabric, a part of the fibers of the heat-fusible fiber layer being interlaced with the gauze.
Other features of the present invention will be apparent from the description of the specification and drawings.
Invention of the inventionEffect of (1)
According to the invention, the non-woven fabric and the gauze can be not easily peeled.
Drawings
Fig. 1 is a plan view of the mask 1 viewed from the non-skin side.
Fig. 2 is a plan view of the mask 1 viewed from the skin side.
Fig. 3 is a sectional view taken along line X-X in fig. 1.
Fig. 4 is a partially enlarged view of the mask sheet 20 when viewed from the skin side.
Fig. 5 is a view showing a state in which the mask sheet 20 is separated into the gauze 40 and the heat-fusible web 50.
Fig. 6 is a sectional view taken along the line Y-Y in fig. 4.
Detailed Description
At least the following matters will be made clear from the description of the present specification and the drawings.
A mask sheet formed by joining a nonwoven fabric containing heat-fusible fibers to a mask, comprising: a gauze disposed on the skin side of the nonwoven fabric; and a heat-fusible fiber layer at least provided between the gauze and the nonwoven fabric, a part of the fibers of the heat-fusible fiber layer being interlaced with the gauze.
According to such a mask sheet, the nonwoven fabric and the heat-fusible fiber layer can be reliably joined (heat-fused) by heating, and since the fibers of the heat-fusible fiber layer are entangled with the gauze, the gauze is less likely to be peeled off from the heat-fusible fiber layer. Therefore, the nonwoven fabric and the scrim can be made less likely to peel off.
In the mask sheet, at least a part of the fibers of the heat-fusible fiber layer, which are entangled with the gauze, preferably protrude from the skin side surface of the gauze.
According to such a mask sheet, the member (member including the fusible fiber) can be easily joined to the skin side surface of the gauze. Further, the engaging portion with the ear portion of the side portion or the like can be made firm.
In the mask sheet, the number of fibers protruding from the skin side surface of the gauze among the fibers interlaced with the gauze in the heat-fusible fiber layer is preferably smaller than the number of fibers not protruding from the skin side surface.
According to the mask sheet, the sense of sting when wearing the mask can be reduced, and the skin touch feeling is good.
In the mask sheet, the amount of fibers per unit area on the non-skin side surface of the gauze is preferably larger than the amount of fibers per unit area on the skin side surface of the gauze in the heat-fusible fiber layer.
According to such a mask sheet, the bonding strength with the nonwoven fabric can be improved while maintaining a good skin feel.
In the mask sheet, preferably, the heat-fusible fibrous 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 larger than the maximum thickness of the skin-side extending portion.
According to such a mask sheet, the bonding strength with the nonwoven fabric can be improved while maintaining a good skin feel.
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 are joined at the ends in the width direction.
According to such a mask sheet, the mask having a pleated structure can suppress the separation between the nonwoven fabric and the gauze, and is more effective.
In the mask sheet, the heat-fusible fiber layer preferably contains hydrophilic fibers and hydrophobic fibers.
According to such a mask sheet, by including the hydrophilic fiber, moisture (breath, sweat, and the like of the wearer) can be absorbed, and the environment inside the mask can be kept comfortable. In addition, by including hydrophobic fibers, moisture is dispersed, and air permeability is improved.
In the mask sheet, the nonwoven fabric preferably further contains a non-heat-fusible fiber.
According to such a mask sheet, the degree of fusion bonding can be appropriately controlled.
Further, a mask, characterized in that the mask comprises: a gauze disposed on the skin side of the nonwoven fabric; and a heat-fusible fiber layer which is provided at least between the gauze and the nonwoven fabric and is bonded to the nonwoven fabric, wherein a part of fibers of the heat-fusible fiber layer is entangled with the gauze.
According to such a mask, the nonwoven fabric and the gauze can be made less likely to peel off.
Embodiments of the present invention are described in detail below with reference to the accompanying drawings
< Structure of mask 1 >
Fig. 1 is a plan view of the mask 1 viewed from the non-skin side. Fig. 2 is a plan view of the mask 1 viewed from the skin side. Fig. 3 is a sectional view taken along line X-X in fig. 1. The mask 1 has a vertical direction, a horizontal direction and a thickness direction orthogonal to each other. The side facing the skin of the wearer (the side relatively close to the skin of the wearer when the mask 1 is worn) in the thickness direction is referred to as the skin side, and the opposite side is referred to as the non-skin side. The side (nose side) located vertically above the mask 1 in the vertical direction is set as the upper side, and the opposite side (chin side) is set as the lower side. The side of the mask 1 that is positioned on the right side of the wearer when the mask is worn (the right side when viewed from the skin side) in the left-right direction is referred to as the right side, and the opposite side is referred to as the left side. The left-right direction corresponds to the width direction.
As shown in fig. 1 and 2, the mask 1 of the present embodiment includes a mask body 3 for covering the face (corners of the mouth and nose) of the wearer, and ear hanging portions 5 extending from the mask body 3.
The ear loops 5 are portions to be hooked on the ears of the wearer, and a pair of the ear loops is provided at both ends (right end 3c and left end 3d) of the mask body 3 in the left-right direction so as to correspond to both ears of the wearer. The ear straps 5 are joined to the non-skin side surface of the mask body 3. The ear portion 5 is preferably elastically stretchable and contractible, and may be formed of a known material such as a rubber band, a nonwoven fabric, a woven fabric, or a plastic film.
As shown in fig. 1 and 2, the mask body 3 has a rectangular shape that is long in the left-right direction in a plan view in a state before being worn (not used). The mask body 3 of the present embodiment is of a fold type (fold type) that folds into a fold and bulges to the non-skin side when worn. The mask body 3 is folded in a stepwise manner in the vertical direction by a plurality of folds (folded portions 35 described later) formed between the right end 3c and the left end 3d, thereby forming a plurality of fold portions 30. The plurality of folds are unfolded when the mask 1 is worn, except for both ends in the left-right direction.
The mask body 3 of the present embodiment mainly includes a nonwoven fabric 10 and a mask sheet 20.
The nonwoven fabric 10 can be formed by appropriately selecting a material having good air permeability from various known synthetic fiber nonwoven fabrics such as a meltblown nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, and a through-air nonwoven fabric. The nonwoven fabric 10 of the present embodiment is configured to include heat-fusible fibers (thermoplastic fibers). Examples of the heat-fusible fibers include polyolefin fibers such as Polyethylene (PE) fibers and polypropylene (PP) fibers, polyester fibers, and polyamide fibers such as nylon. The nonwoven fabric 10 may contain fibers other than the heat-fusible fibers (i.e., non-heat-fusible fibers). Thus, the amount of the non-heat-fusible fibers can be adjusted to appropriately control the degree of fusion at the time of forming the fusion-bonded part 36 (described later).
The mask sheet 20 is a sheet member disposed on the skin side of the nonwoven fabric 10, and includes a gauze 40 and a heat-fusible fiber web 50 (corresponding to a heat-fusible fiber layer). Details of the mask sheet 20 will be described later.
The mask body 3 of the present embodiment is provided with a holding member 31, side pieces 32, a notch 33, a nose piece 34, a folded-back portion 35, and a welded portion 36.
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 holding the upper end edge portion in a predetermined shape. The holding member 31 is disposed between the folded portions of the mask body 3 (the portions folded by the chevron folded portions 35a described later), and is fixed so as not to be displaced by a plurality of fusion-bonded portions 36 formed around the holding member.
The holding member 31 is preferably formed of a flexible thermoplastic resin (e.g., plastic) or the like. Such a holding member 31 can be easily bent by the wearer and, once deformed into a predetermined shape, holds the predetermined shape as long as external force is not applied again. Therefore, when the holding member 31 is deformed to conform to the shape of the nose after the mask 1 is worn by the wearer, the holding member 31 holds the vicinity of the upper end of the mask body 3 in a state of conforming to the shape of the nose of the wearer. This can prevent a gap from being formed between the upper end edge of the mask body 3 and the face of the wearer.
The side sheet 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, respectively. That is, the side sheet 32 is fixed (joined) in a state of sandwiching the end portions of the nonwoven fabric 10 and the mask sheet 20 in the lateral direction in the thickness direction. By providing such side sheets 32, it is possible to suppress scattering of the yarn (structural yarn 41 described later) at the end of the scrim 40, and to improve the bonding strength with the ear portions 5 and the like.
As with the nonwoven fabric 10, the side sheet 32 can be formed by appropriately selecting a material having good air permeability from various known synthetic fiber nonwoven fabric sheets such as a meltblown nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, and a through-air nonwoven fabric. Further, as the side sheet 32, a material formed of a woven fabric or a knitted fabric may be used. However, since it is preferable that the skin (face) of the wearer is not easily irritated, the nonwoven fabric is preferable.
The notches 33 are provided (provided in a pair) at both ends (right end 3c and left end 3d) in the left-right direction of the nonwoven fabric 10 and the mask sheet 20 constituting the mask body 3, and are covered with the side sheet 32. The notch 33 is formed in a shape recessed toward the center of the mask body 3 in the lateral direction, more specifically, in a substantially V-letter shape in which the vertical length gradually decreases from the lateral end toward the center. However, the shape is not limited to this, and various known shapes such as a single or a plurality of linear shapes and curved shapes may be used. By providing the notch 33, the notch 33 is easily deformed as a starting point of deformation when the mask 1 is used, and thus, the adhesiveness to the face of the wearer can be improved (the adhesiveness of the mask body 3 to the face can be improved).
The mask portion 34 extends downward from the upper end 3a on the skin side of the mask body 3, and has a fixed end at the upper end and a free end at the lower end. More specifically, the nose mask portion 34 is joined at the upper end 3a to the mask body 3 (here, the nonwoven fabric 10) folded back toward the skin side by welding or by a hot-melt adhesive. The 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 face (nose portion) of the wearer, and can prevent the wearer from feeling uncomfortable with wearing the mask 1. Alternatively, the mask portion 34 may be absent.
The folded portion 35 is a portion where the nonwoven fabric 10 and the mask sheet 20 constituting the mask body 3 are folded. As shown in fig. 3, the folded-back portions 35 are formed with a plurality of mountain-shaped folded portions 35a that are folded so that the skin-side surfaces of the mask sheet 20 are overlapped with each other, and valley-shaped folded portions 35b that are folded so that the non-skin-side surfaces of the nonwoven fabric 10 are overlapped with each other. Thereby, a plurality of fold portions 30 are formed in the mask body 3.
In the chevron 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 surface of the mask sheet 20 (see fig. 2 and 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 interposed therebetween, and the nose mask portion 34 is joined to the skin side thereof as described above. In the mask sheet 20 of the present embodiment, since the layers of the heat-fusible fibers are present on both sides of the gauze 40 as described later, the above-described folded portions can be reliably joined.
At the ends in the left-right direction (right end 3c, left end 3d), the nonwoven fabric 10 and the mask sheet 20 are sandwiched and joined by the side sheets 32 in the thickness direction in a folded state. Here, the use of the mask sheet 20 can improve the bonding strength between the portions folded into folds. Therefore, the joining strength of this portion is improved, and therefore the side sheet 32 can be omitted.
The fusion-bonded portion 36 is a portion where the respective members are fused by heat fusion, and a plurality of portions are provided in the mask body 3. Further, a pattern 36a formed of a pattern in which a plurality of minute fusion portions 36 are arranged is provided on the lower left portion of the mask body 3 of the present embodiment. In the mask 1 of the present embodiment, letters (abc) of letters are formed as the pattern 36 a. By providing such a pattern 36a, the front and back sides (skin side, non-skin side) of the mask 1 can be easily recognized, and an error in the wearing direction of the mask 1 can be prevented. In particular, in the present embodiment, the pattern 36a can be easily made conspicuous by using the mask sheet 20. The pattern 36a is not limited to the illustrated form, and may be in a form (left-right asymmetrical form) in which the front and back sides (skin side, non-skin side) of the mask 1 can be recognized. For example, characters other than letters, symbols, figures, arrows, and the like may be used.
< Structure of mask sheet 20 >
As described above, the mask body 3 of the present embodiment is mainly composed of two sheet members, i.e., the nonwoven fabric 10 containing the heat-fusible fibers and the mask sheet 20. The mask sheet 20 also has a gauze 40 made of cotton yarn or the like.
If the nonwoven fabric 10 and the scrim 40 are directly bonded by thermal fusion, since the scrim 40 does not contain thermal fusion fibers, the fused fibers of the nonwoven fabric 10 are integrated into the fabric of the scrim 40. In this case, the nonwoven fabric 10 and the scrim 40 are weak in bonding strength and are easily peeled. If the nonwoven fabric 10 and the gauze 40 are peeled off, the gauze 40 may stick to the corners of the wearer's mouth, and the wearer may have difficulty breathing. Therefore, in the present embodiment, the nonwoven fabric 10 and the gauze 40 are not easily peeled off by using the mask sheet 20.
Fig. 4 is a partially enlarged view of the mask sheet 20 when viewed from the skin side, and fig. 5 is a view showing a state in which the mask sheet 20 is separated into the gauze 40 and the heat-fusible web 50. As shown in fig. 4 and 5, the mask sheet 20 is a sheet member in which the gauze 40 and the fibers 51 (heat-fusible fibers) of the heat-fusible fiber web 50 are entangled with each other (the gauze 40 is interlaced with the heat-fusible fiber web 50) and integrated. The method for producing the mask sheet 20 in which the gauze 40 and the heat-fusible fiber web 50 are interlaced will be described later.
As shown in fig. 4, the gauze 40 is formed of structural yarns 41 woven into a lattice shape. The structural yarn 41 has a plurality of warp yarns 42 and a plurality of weft yarns 43 intersecting with the warp yarns 42, and a plurality of knitting meshes 45 (through areas surrounded by the warp yarns 42 and the weft yarns 43) formed by intersecting with each other in the thickness direction are formed. The structural yarn 41 of the gauze 40 is a twisted yarn formed by twisting a raw yarn made of cotton yarn (cotton fiber). As the material of the raw yarn, 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 can be suitably used in addition to cotton fibers. The cotton yarn used as the raw yarn is preferably 10 to 100 cotton counts thick. The knitting method of the gauze 40 is not limited to the plain knitting in which a lattice shape is knitted, and a known knitting method such as twill knitting, satin knitting, and leno knitting can be appropriately used.
The heat-fusible fiber web 50 (heat-fusible fiber layer) is a fiber aggregate formed by a known production method such as a spunbond method using long fibers, a dry method in which fibers are aligned by carding short fibers in a constant direction with a carding machine to form a web, and the like, and is in 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. The heat-fusible web 50 is not limited to being formed by a carding method using a carding machine, and may be formed by a method such as an air-laid method, a wet method, a spunbond method, or a melt-blown method.
The heat-fusible web 50 of the present embodiment is provided at least between the scrim 40 and the nonwoven fabric 10 (see fig. 6), and a part of the fibers 51 is entangled with the scrim 40. Thus, the nonwoven fabric 10 including the heat-fusible fibers and the heat-fusible web 50 can be reliably joined (fused) by heating, and the fibers 51 of the heat-fusible web 50 are entangled with the gauze 40, so that the gauze 40 is not easily peeled off from the heat-fusible web 50. Therefore, the nonwoven fabric 10 and the scrim 40 can be made less likely to peel off.
The thermal adhesive web 50 has a fiber density of, for example, 2.8X 10 -3 g/cm 3 ～3.5×10 -3 g/cm 3 The weight per unit area (weight per unit area) is, for example, 20g/m 2 ～70g/m 2 . The thickness of the heat-fusible web 50 is, for example, 7mm to 20mm, and the length of the fibers of the heat-fusible web 50 is, for example, 1mm to 100 mm. The fineness of the heat-fusible web 50 is, for example, 0.1dtex to 6 dtex.
In the heat-fusible web 50 of the present embodiment, hydrophilic fibers and hydrophobic fibers are included as the fibers 51. As the hydrophobic fibers, composite fibers such as polyester fibers including polyethylene terephthalate (PET), polyolefin fibers including polypropylene (PP) and Polyethylene (PE), sheath-core composite fibers including PP and PE, and side-by-side composite fibers can be used. Examples of the hydrophilic fiber include rayon, a heat-fusible fiber subjected to hydrophilization treatment, and a conjugate fiber. The hydrophilization treatment is a treatment of coating the surface with a surfactant to reduce the contact angle of the fiber surface and thereby modify the fiber surface to be hydrophilic. In this case, preferable examples of the surfactant to be used include nonionic surfactants such as hydrophilic silicone oil, anionic surfactants, cationic surfactants, amphoteric surfactants, and the like.
By including the hydrophilic fibers in the heat-fusible web 50, moisture (breath, sweat, and the like of the wearer) can be absorbed, and the environment inside the mask (between the mask 1 and the face of the wearer) can be kept comfortable. Further, by including hydrophobic fibers in the heat-fusible web 50, moisture is dispersed and air permeability is improved.
In the case where the heat-fusible web 50 contains 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 possible to disperse water more easily and improve air permeability.
As a method of interlacing and integrating the gauze 40 and the heat-fusible web 50 (a method of manufacturing the mask sheet 20), for example, a known water interlacing method can be used. In the step of producing a liquid-permeable sheet by hydroentanglement, a high-pressure water stream is ejected from a plurality of nozzles disposed at intervals in a direction intersecting the direction of conveyance of a continuous laminate in which an aggregate of continuous fibers as a material of a heat-fusible web 50 is laminated on the upper surface (here, the non-skin side 40a) of a continuous lattice-shaped woven fabric as a material of a gauze 40. That is, as shown in fig. 5, the thermal adhesive fiber web 50 is superposed on the gauze 40, and a high-pressure water jet is jetted from the upper side (non-skin side) toward the lower side. Thereby, the structural fibers (fibers 51) of the heat-fusible web 50 and the structural yarns 41 of the scrim 40 can be integrated by being entangled. Further, the integrated sheet can be provided with a pattern by the pressure of water.
When water interlacing is performed, the continuous laminate described above in which the continuous gauze 40 and the continuous heat-fusible fiber web 50 are laminated is conveyed by a conveying member composed of a metal mesh belt, and when a high-pressure water flow is ejected from a nozzle onto the upper surface of the continuous laminate, the fibers 51 of the upper-surface-side heat-fusible fiber web 50 are interlaced with the structural yarns 41 of the gauze 40, and are also interlaced by a water flow that hits the conveying member and is splashed back on the lower surface side facing the conveying member. Further, according to the water-interlacing method, the mask sheet 20 having desired sheet characteristics with respect to thickness, mass, absorption rate, sheet strength, and the like can be obtained by appropriately changing the structure of the mesh belt of the transport member.
Fig. 6 is a cross-sectional view taken along the line Y-Y in fig. 4, and shows the nonwoven fabric 10 on the non-skin side of the mask sheet 20 by a phantom line. Referring to fig. 6, in the mask sheet 20, the fibers 51 of the heat-fusible web 50 are entangled with the gauze 40, and a part of the fibers 51 entangled with the gauze 40 protrudes (protrudes) from the skin-side surface 40b of the gauze 40. This makes it easy to join members (members including heat-fusible fibers, etc.) to the skin-side surface 40b of the gauze 40. For example, the folded nonwoven fabric 10 is easily joined to the skin side of the mask sheet 20 (the skin side surface 40b of the gauze 40) at the lower end 3b of the mask body 3. Further, the engaging portion with the lug portion 5 and the like can be made firm.
In this way, the heat-fusible web 50 includes the skin-side extending portion 52 provided at a position closer to the skin side than the skin-side surface 40b of the gauze 40 and the non-skin-side extending portion 53 provided at a position closer to the non-skin side than the non-skin-side surface 40a of the gauze 40. The non-skin-side projecting portion 53 is formed by directly jetting a high-pressure water flow when formed by the water flow interlacing method. On the other hand, the skin-side projecting portion 52 is a portion which penetrates between the lattice-shaped structural yarn 41 of the gauze 40 positioned therebelow and the structural yarn 41 when the high-pressure water jet is jetted, and projects to the mesh belt side as the transport means.
In the mask sheet 20 of the present embodiment thus manufactured, the number of fibers 51 protruding from the skin-side surface 40b of the gauze 40 among the fibers 51 interlaced with the gauze 40 in the heat-fusible web 50 is smaller than the number of fibers 51 not protruding from the skin-side surface 40 b. By thus reducing the number of fibers 51 protruding from the skin-side surface 40b of the gauze 40, the sensation of stinging when wearing the mask 1 can be reduced, and the skin feel becomes better.
For example, the number of fibers 51 protruding from the skin-side surface 40b of the gauze 40 among the fibers 51 interlaced with the gauze 40 of the heat-fusible web 50 may be larger than the number of fibers 51 not protruding from the skin-side surface 40b by a manufacturing method other than the hydroentangling method. In this case, since the amount of the fibers 51 protruding from the skin-side surface 40b of the gauze 40 is large, the entanglement on the skin-side surface 40b side is enhanced, and the gauze 40 is less likely to be peeled off from the heat-fusible web 50. Therefore, the nonwoven fabric 10 and the scrim 40 are less likely to peel off.
As shown in fig. 6, the heat-fusible web 50 preferably has a larger amount of fibers per unit area on the non-skin side surface 40a side (non-skin-side extending portion 53) of the scrim 40 than on the skin side surface 40b side (skin-side extending portion 52). This can improve the bonding strength with the nonwoven fabric 10 while maintaining a good tactile sensation.
In fig. 6, it is preferable that the maximum thickness D2 of the non-skin-side projecting portion 53 is larger than the maximum thickness D1 of the skin-side projecting portion 52 when the thickness of the point 51a projecting from the skin-side surface 40b of the gauze 40 to the skin-side projecting portion 52 to the most skin-side is set to the maximum thickness D1 of the skin-side projecting portion 52 and the thickness of the point 51b projecting from the non-skin-side surface 40a of the gauze 40 to the non-skin-side projecting portion 53 to the most non-skin side is set to the maximum thickness D2 of the non-skin-side projecting portion 53. By increasing the maximum thickness D2 of the non-skin-side projecting portion 53 of the heat-fusible web 50 in this manner, the bonding strength with the nonwoven fabric 10 can be improved while maintaining a good tactile sensation.
The maximum thicknesses D1 and D2 are apparent thicknesses, and for measurement of the thickness dimension, for example, the mask sheet 20 is first cut preferably in the thickness direction of the heat-fusible web 50, and an enlarged photograph of the cut surface is taken using a digital microscope VHX-1000 manufactured by keyence corporation, or the like. Based on the enlarged photograph, the separation dimension of the point 51a protruding to the most skin-side position from the skin-side surface 40b of the gauze 40 to the skin-side protruding portion 52 is measured (D1), and the separation dimension of the point 51b protruding to the most non-skin-side position from the non-skin-side surface 40a of the gauze 40 to the non-skin-side protruding portion 53 is measured (D2). In this way, the thickness dimensions (maximum thickness D1 and maximum thickness D2) can be measured.
[ Table 1]
Table 1 shows the results of measuring the peel strength of the scrim 40 and the nonwoven fabric 10. Here, the peel strength between the scrim 40 and the nonwoven fabric 10 was measured for the case where the scrim 40 was a single body and the case where the heat-fusible fiber web 50 was entangled with the scrim 40 (two types of heat-fusible fibers having different amounts).
Further, the peel strength was measured by clamping a sample (sample width 25mm) on a chuck of Autograph manufactured by Shimadzu corporation and measuring at a test speed of 100 mm/min. Each value in table 1 shows the maximum point test force in the measurement.
In table 1, the peel strength of the form in which the heat-fusible web 50 is entangled with the scrim 40 is higher than that of the form in which the scrim 40 is solely woven. Further, the more the amount of the heat-fusible fiber, the higher the peel strength. It was thus confirmed that the gauze 40 and the nonwoven fabric 10 were not easily peeled off by interweaving the heat-fusible web 50 with the gauze 40 (as the mask sheet 20).
As described above, the mask 1 of the present embodiment includes the nonwoven fabric 10 including the heat-fusible fiber, and the mask sheet 20 joined to the nonwoven fabric 10. The mask sheet 20 includes a gauze 40 disposed on the skin side of the nonwoven fabric 10 and a heat-fusible fiber web 50 provided at least between the gauze 40 and the nonwoven fabric 10, and a part of fibers 51 (heat-fusible fibers) of the heat-fusible fiber web 50 is entangled with the gauze 40.
Accordingly, the nonwoven fabric 10 and the heat-fusible fibers of the heat-fusible web 50 can be reliably bonded (heat-fused) by heating, and the fibers 51 of the heat-fusible web 50 are entangled with the gauze, so that the gauze 40 is not easily peeled off from the heat-fusible web 50. Therefore, the nonwoven fabric 10 and the scrim 40 can be made less likely to peel off.
Other embodiments are also possible
While the embodiments of the present invention have been described above, the above embodiments are intended to facilitate understanding of the present invention and are not intended to limit the present invention. It is to be understood that the present invention may be modified or improved without departing from the gist thereof, and the present invention includes equivalent inventions. For example, the following modifications can be made.
In the above-described embodiment, the mask 1 (mask body 3) is of a pleated type, but is not limited thereto. For example, the shape may be a flat shape, a three-dimensional shape, a cup shape, or the like. However, by providing the layers of the heat-fusible web 50 on the skin-side surface 40b side and the non-skin-side surface 40a side of the gauze 40 as described above, the surfaces of the mask sheet 20 (the skin-side surface 40b of the gauze 40) in the folded state can be easily joined to each other. Therefore, it is more effective in the case of the wrinkle type.
In the above-described embodiment, the mask body 3 is configured by laminating the nonwoven fabric 10 and the mask sheet 20, but the present invention is not limited thereto. For example, another sheet member (nonwoven fabric or the like) may be further laminated.
Description of the reference numerals
1. A mask; 3. a mask body; 3a, upper end; 3b, lower end; 3c, the right end; 3d, the left end; 5. hanging ear parts; 10. non-woven fabrics; 20. a mask sheet; 30. the plica portion; 31. a holding member; 32. a side panel; 33. a notch portion; 34. a nose mask portion; 35. a fold-back portion; 35a, a mountain fold; 35b, valley fold; 36. a fusion part; 36a, a pattern; 40. gauze; 40a, non-skin side; 40b, the side of the skin; 41. a structural yarn; 42. warp yarns; 43. weft yarns; 45. weaving meshes; 50. a heat-fusible fiber web (heat-fusible fiber layer); 51. fibers; d1, D2, maximum thickness.
Claims (9)
1. A mask sheet comprising a mask body formed by bonding a nonwoven fabric containing heat-fusible fibers,
the mask sheet comprises:
a gauze disposed on the skin side of the nonwoven fabric; and
a heat-fusible fiber layer provided at least between the gauze and the nonwoven fabric,
a portion of the fibers of the thermally fusible fiber layer are interwoven with the scrim.
2. The mask sheet according to claim 1, wherein the mask sheet is a sheet having a thickness,
at least a part of the fibers of the thermal fusion fiber layer interwoven with the gauze protrudes from the skin side of the gauze.
3. The mask sheet according to claim 2, wherein the mask sheet is a sheet having a thickness,
the number of fibers protruding from the skin side surface of the gauze among the fibers interlaced with the gauze of the heat-fusible fiber layer is smaller than the number of fibers not protruding from the skin side surface.
4. The mask sheet according to claim 2 or 3, wherein the mask sheet is a sheet having a thickness,
in the heat-fusible fibrous layer, the amount of fibers per unit area on the non-skin-side surface of the gauze is larger than the amount of fibers per unit area on the skin-side surface.
5. The mask sheet according to any one of claims 2 to 4, wherein the mask sheet is a sheet having a thickness,
the heat-fusible fibrous 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 larger than the maximum thickness of the skin-side extending portion.
6. The mask sheet according to any one of claims 2 to 5, wherein the mask sheet is a sheet having a thickness,
the mask is of a fold 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.
7. The mask sheet according to any one of claims 1 to 6, wherein the mask sheet is a sheet having a thickness,
the heat-fusible fiber layer includes hydrophilic fibers and hydrophobic fibers.
8. The mask sheet according to any one of claims 1 to 7, wherein the mask sheet is a sheet having a thickness,
the nonwoven fabric further comprises non-heat-fusible fibers.
9. A mask is characterized in that a mask body is provided,
this gauze mask includes:
a nonwoven fabric comprising heat-fusible fibers;
a gauze disposed on the skin side of the nonwoven fabric; and
a heat-fusible fiber layer provided at least between the gauze and the nonwoven fabric and bonded to the nonwoven fabric,
a portion of the fibers of the thermally fusible fiber layer are interwoven with the scrim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019232767A JP7301731B2 (en) | 2019-12-24 | 2019-12-24 | Mask sheets and masks |
| JP2019-232767 | 2019-12-24 | ||
| PCT/JP2020/046311 WO2021131800A1 (en) | 2019-12-24 | 2020-12-11 | Mask sheet and mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114845592A true CN114845592A (en) | 2022-08-02 |
Family
ID=76574102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080089242.6A Pending CN114845592A (en) | 2019-12-24 | 2020-12-11 | Mask sheet and mask |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7301731B2 (en) |
| CN (1) | CN114845592A (en) |
| TW (1) | TW202126347A (en) |
| WO (1) | WO2021131800A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2602794Y2 (en) * | 1993-07-02 | 2000-01-24 | 日本バイリーン株式会社 | Protruding composite mask |
| JPH077657A (en) * | 1993-12-09 | 1995-01-10 | Sony Corp | Video camera |
| JPH11200212A (en) * | 1998-01-19 | 1999-07-27 | Unitika Ltd | Composite nonwoven fabric for bedclothes |
| WO2018221381A1 (en) | 2017-06-02 | 2018-12-06 | クラレクラフレックス株式会社 | Mask |
-
2019
- 2019-12-24 JP JP2019232767A patent/JP7301731B2/en active Active
-
2020
- 2020-11-17 TW TW109140015A patent/TW202126347A/en unknown
- 2020-12-11 CN CN202080089242.6A patent/CN114845592A/en active Pending
- 2020-12-11 WO PCT/JP2020/046311 patent/WO2021131800A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| TW202126347A (en) | 2021-07-16 |
| WO2021131800A1 (en) | 2021-07-01 |
| JP2021101048A (en) | 2021-07-08 |
| JP7301731B2 (en) | 2023-07-03 |
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