Sheet mask and method for producing same

Abstract

To provide a sheet-like mask excellent in manufacture stability and wearability.SOLUTION: A panel joint part 23 in which edges extending in a vertical direction X from a fold line 20L of a first panel 21 and a second panel 22 are joined is formed in a mask body 2 constituting a sheet-like mask 1. A three-dimensional shape part 25 in which a center part in a lateral direction Y of the mask body 2 including the panel joint part 23 projects toward a non-skin facing face 2b side is formed in a state in which both panels 21 and 22 are expanded. The sheet-like mask 1 includes a connection part 35 in which ends opposite to a joint side with the mask body 2 in a pair of ear hook members 3 and 3 are joined in a non-use state, and the connection part 35 is cut to be used.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a sheet-type mask having ear hooks and a manufacturing method thereof. [Background technology]

[0002] Conventionally, sheet-like masks that cover the mouth and nose of a wearer include a mask body made of a sheet-like material such as a nonwoven fabric and ear hooks attached thereto. A typical manufacturing method for this type of sheet-like mask includes the steps of manufacturing and transporting a continuous mask body body in which multiple mask bodies are connected in a transport direction, and intermittently arranging multiple ear hooks, which are manufactured on a manufacturing line separate from the continuous mask body body, in the transport direction and attaching them to the continuous mask body body during transport.

[0003] Patent Document 1 describes a mask structure that is designed to facilitate handling during continuous production of sheet masks, and describes a mask structure in which a pair of ear hook members are fitted within the outer shape of the mask body in a plan view of the mask, and both ear hook members are connected to each other at a connection portion. The connection between the ear hook members can be easily released by pulling the ear hook members with the fingers. When the pair of ear hook members are connected to each other and integrated at the connection portion in this way, it is said that the ear hook members can be easily handled during production. Such a sheet-like mask in which ear loop members are connected in a cuttable manner is also described, for example, in Patent Document 2. The mask described in Patent Document 2 is intended to cover the entire face of the wearer, and does not cover a portion of the face of the wearer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-217650 A [Patent Document 2] JP 2010-259654 A Summary of the Invention [Problem to be solved by the invention]

[0005] Generally, before use, a sheet mask is stored with the ear hooks overlapping the inner surface (skin-facing surface) of the mask body. When wearing the mask, the ear hooks are picked up with the fingers and separated from the mask body. However, the ear hooks are often made of soft materials such as nonwoven fabrics and do not have stiffness, so this operation can be surprisingly time-consuming. In particular, the substantially flat sheet masks that do not have a three-dimensional shape, as described in Patent Documents 1 and 2, have room for improvement in terms of the handling of the ear hooks when worn. A sheet mask that is easy to handle and has excellent manufacturing stability during manufacturing, and that is easy to handle and has excellent wearability during wearing has not yet been provided.

[0006] An object of the present invention is to provide a sheet-like mask that is excellent in production stability and wearability. [Means for solving the problem]

[0007] The present invention is a sheet-like mask comprising a mask body having a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular thereto, covering at least a part of the wearer's face, and a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. One embodiment of the sheet-like mask of the present invention comprises a mask body having a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular to the vertical direction, covering at least a portion of the wearer's face, and a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. In one embodiment of the sheet-like mask of the present invention, the mask body has a skin-facing surface that faces the wearer's skin when worn and a non-skin-facing surface located on the opposite side, and is provided with a first panel and a second panel arranged on both the left and right sides of a fold line that extends in the vertical direction through the lateral center of the mask body. One embodiment of the sheet-type mask of the present invention is a sheet-type mask that can be folded in such a manner that the mask body is folded at the fold line with the skin-facing surface on the inside, the first panel and the second panel are overlapped, and the pair of earhook members are interposed between the two panels. In one embodiment of the sheet-like mask of the present invention, a panel joint is formed in the mask body in which edges extending in the vertical direction from the fold lines of the first panel and the second panel are joined to each other, and when both panels are unfolded, a three-dimensional shape is formed in which the horizontal center of the mask body including the panel joint protrudes toward the non-skin-facing surface side. One embodiment of the sheet-like mask of the present invention has, when unused, a connection portion at which the ends of a pair of earhook members opposite the side where they are joined to the mask body are joined together, and the connection portion is cut off before use.

[0008] The present invention also provides a method for producing a sheet mask having the following configurations A to D. Configuration A: The mask comprises a mask body having a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular thereto, covering at least a part of the wearer's face, and a pair of ear hook members connected to both ends of the mask body in the horizontal direction and adapted to engage with the left and right ears of the wearer. Configuration B. The mask body has a skin-facing surface that faces the wearer's skin when worn and a non-skin-facing surface located on the opposite side, and is provided with a first panel and a second panel arranged on both the left and right sides of a fold line that passes through the lateral center of the mask body and extends in the vertical direction. Configuration C. The mask body can be folded at the fold line with the skin-facing surface on the inside, so that the first panel and the second panel are overlapped and the pair of earhook members are interposed between the two panels. Configuration D: At least in the folded state, the pair of earhook members have a connection portion where the ends opposite to the side where they are joined to the mask body are joined together, and the connection portion is cut for use. One embodiment of the manufacturing method of the sheet mask of the present invention includes an earhook member connection manufacturing step of cutting out an earhook member connection body in which a pair of the earhook members are connected to each other via the connection portion from a strip-shaped sheet material. One embodiment of the manufacturing method of the sheet-type mask of the present invention includes an ear-hook member joining step of joining the ear-hook member connector to a continuous mask body including a plurality of the mask bodies to manufacture the continuous mask body. One embodiment of a manufacturing method for a sheet-type mask of the present invention includes a folding step of folding the continuous mask strip in a direction perpendicular to the transport direction, which is perpendicular to the transport direction, to overlap the first panel and the second panel included in the continuous mask strip. One embodiment of the method for producing a sheet-like mask of the present invention includes a panel joining step of partially joining the first panel and the second panel overlapped in the folding step. Other features, advantages and embodiments of the present invention are described below. Effect of the Invention

[0009] According to the sheet-like mask of the present invention, the ear hook members are easy to handle during production, so that the mask can be stably produced with a high yield rate, and the ear hook members are easy to handle during wearing, so that the wearing operation can be performed smoothly. In addition, since the sheet-like mask of the present invention has a three-dimensional shape, it is excellent in adhesion to the wearer's face, wearing comfort, etc. Furthermore, according to the method for producing a sheet-type mask of the present invention, a sheet-type mask having ear hook members and excellent wearability can be produced efficiently and stably. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic perspective view of one embodiment of a sheet mask of the present invention. [Diagram 2] FIG. 2 is a plan view that illustrates a folded form of the mask illustrated in FIG. [Diagram 3]FIG. 3 is a schematic perspective view of the mask shown in FIG. 1 when unfolded without cutting the connections between the ear hook members, as viewed from the skin-facing surface of the mask body. [Figure 4] FIG. 4 is a schematic cross-sectional view taken along the thickness direction of the mask body of the mask shown in FIG. [Diagram 5] FIG. 5 is a schematic plan view of the mask shown in FIG. 1 when unfolded without cutting the connections between the earhook members and breaking the panel joints, as viewed from the skin-facing side of the mask body. [Figure 6] FIG. 6 is a schematic plan view of the earhook member connection body of the mask shown in FIG. [Figure 7] Figure 7(a) is a schematic cross-sectional view of the ear-hook member connection body shown in Figure 5 along the straight line indicated by the symbol L1, and Figure 7(b) is a schematic cross-sectional view of the ear-hook member connection body of Figure 7(a) when the connection portion is cut. [Figure 8] FIG. 8 is an explanatory diagram of one embodiment of the method for producing a sheet mask of the present invention, and is a schematic perspective view of a main part of the mask producing apparatus shown in FIG. [Figure 9] FIG. 9 is a schematic side view of the main part of the manufacturing apparatus shown in FIG. 8, showing the configuration for forming an ear-hanging member connection body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention will be described below based on preferred embodiments with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. The drawings are basically schematic, and the ratio of each dimension may differ from the actual one.

[0012] The sheet mask of the present invention is typically intended to cover a portion of the wearer's face, and is different from one that covers the entire face. The mask 1 of the present invention has a vertical direction X corresponding to the up-down direction of the wearer and a horizontal direction Y perpendicular thereto, and typically includes a mask body 2 that covers at least a part of the wearer's face, and a pair of ear hook members 3, 3 connected to both ends of the mask body 2 in the horizontal direction Y and engaged with the left and right ears of the wearer. An example of this is shown in Figures 1 to 4. The mask 1 shown in Figures 1 to 4 is a sheet-like mask in which the mask body 2 covers the nasal cavity and mouth of the wearer when worn.

[0013] The mask body 2 has a skin-facing surface 2a that faces the skin of the wearer when worn and a non-skin-facing surface 2b located on the opposite side thereof, and typically includes a first panel 21 and a second panel 22 arranged on both the left and right sides of a fold line 20L that passes through the center of the mask body 2 in the horizontal direction Y and extends in the vertical direction X. The "center of the mask body 2 in the horizontal direction Y" referred to here is typically the center of the mask body 2 in the horizontal direction Y. That is, the fold line 20L typically extends in the vertical direction X, dividing the mask body 2 in half in the horizontal direction Y. However, in the present invention, the fold line 20L is not limited to passing through the exact center of the mask body 2 in the horizontal direction Y, and may be shifted from the exact center as long as the first panel 21 and the second panel 22 are folded over. In this embodiment, the mask 1 is typically formed symmetrically with respect to the fold line 20L. In the illustrated embodiment, the fold line 20L extends in the vertical direction so as to follow the bridge of the wearer's nose when worn.

[0014] The mask 1 can be folded. The mask 1 is preferably folded in such a manner that the mask body 2 is folded at the fold line 20L with the skin-facing surface 2a facing inward, the first panel 21 and the second panel 22 are overlapped, and a pair of ear hook members 3, 3 are interposed between the panels 21, 22. This example is shown in Fig. 2. In this embodiment, in the mask 1 in the folded form, the mask body 2 is folded in half at a folding line 20L.

[0015] The mask body 2 preferably has a panel joint 23 formed by joining edges of the first panel 21 and the second panel 22, which extend in the vertical direction X from the folding line 20L of each panel. When both panels 21, 22 are unfolded as shown in Figures 1 and 3, a central portion of the mask body 2 in the horizontal direction Y, including the panel joint 23, protrudes toward the non-skin facing surface 2b to form a three-dimensional shape portion 25. At the panel joint 23, the panels 21, 22 are preferably joined to each other by a known joining means such as fusion, adhesive, etc. Typically, the panel joint 23 is a fused portion in which the forming members of the panels 21, 22 are joined to each other by fusion.

[0016] The panel joint 23 preferably includes a nose side joint 231 that corresponds to the wearer's nose and is located on the upper side of the mask body 2, and a chin side joint 232 that corresponds to the wearer's chin and is located on the lower side of the mask body 2. Typically, the nose side joint 231 and the chin side joint 232 are spaced apart in the vertical direction X. As a result, the first panel 21 and the second panel 22 are not joined to each other between the nose side joint 231 and the chin side joint 232. The panel joint 23 is formed in this manner, thereby forming a three-dimensional shape portion 25. An example of this is shown in Figs. 1 and 2.

[0017] It is preferable that the panel joints 23 (nose side joint 231, chin side joint 232) are located inside the contour lines of the first panel 21 and the second panel 22, and that a predetermined gap G exists between the panel joints 23 and the contour lines. In other words, the first panel 21 and the second panel 22 are not joined to include their contour lines extending from the fold line 20L in the vertical direction X, and the components forming the contour lines and their vicinity (edges) of both panels 21, 22 are not joined to each other. Since the panel joint 23 is positioned inside the contour lines of the first panel 21 and the second panel 22, even if stress acts on the panel joint 23, for example, during the operation of unfolding the mask 1 in its folded form, it is possible to prevent the mask body 2 from breaking starting from the panel joint 23. Furthermore, it is more preferable that the panel joint 23 is aligned along the contours of the panels 21, 22. This stabilizes the shapes of the multiple forming members in the portions (edges) of the panels 21, 22 that are positioned outside the panel joint 23, and allows the mask 1 to be manufactured stably. From the viewpoint of preventing the panel joints 23 consisting of fused parts or the like from being positioned on the outer edge (contour line) of the product by arranging the panel joints 23 as described above, ensuring the strength of the product to facilitate maintaining the three-dimensional shape when the mask is worn, and facilitating the floating effect of the ear loop member connectors 36 when the mask body 2 is unfolded as described below, the gap G is preferably 0.1 mm or more, more preferably 0.3 mm or more, and even more preferably 0.5 mm or more. In addition, in the process of forming the panel joint 23 during the manufacture of the mask 1 (the panel joining process described below), in order to prevent the ear hook member 3 (ear hook member connector 36) arranged between the two overlapping panels 21, 22 from being joined together with the panels 21, 22, the gap G is preferably 10 mm or less, more preferably 5 mm or less, and even more preferably 3 mm or less.

[0018] Typically, the ear hook member 3 has a shape that is long in one direction, and is joined to the mask body 2 at an ear hook member joining portion 24 at one end in the longitudinal direction. The ear hook member 3 is preferably provided with a planar line-of-sight slit 31 that is formed by cutting the ear hook member 3 and into which the wearer's ear is inserted when the mask is worn. The slit 31 functions as an ear hook into which the wearer's ear is inserted when the mask 1 is worn, and the ear hook member 3 can be hooked around the wearer's ear by inserting the wearer's ear into the slit 31. In plan view, the cutout 31 preferably has a portion that extends in one direction (horizontal direction Y) from the mask body 2 side (earhook member joint 24 side) toward the tip side of the earhook member 3, which is the opposite side. In addition to or instead of this, it is preferable that the cutout portion 31 has a portion extending in the vertical direction X in a plan view. That is, it is preferable that the cutout portion 31 has a portion extending in a direction intersecting the portion extending in the one direction. It is preferable that the portion of the notch 31 extending in the vertical direction X has a convex portion that is convex toward the tip side of the ear hook member 3. The notch 31 in the illustrated example has both this and the portion extending in one direction, and as a whole has a "J" shape in a plan view. In the present invention, the planar shape of the cutout portion 31 is not particularly limited and can be any shape provided that it functions as an ear hook, and for example, it may be a shape without curves, such as the letter "T."

[0019] In the present invention, the mask body 2 optionally contains a heating element 4. The mask body 2 typically includes the heating element 4, a breathable front sheet 5 that is disposed closer to the wearer's skin than the heating element 4 and forms the inner surface of the mask 1 (the surface facing the wearer's skin), and a breathable back sheet 6 that is disposed farther from the wearer's skin than the heating element 4 and forms the outer surface of the mask 1. The heating element 4 is interposed between the two sheets 5, 6. The two sheets 5, 6 have a larger area than the heating element 4, and each extends outward from the periphery of the heating element 4. An example of this is shown in FIG. 4. The heating element 4 includes a heat generating composition 43, a non-breathable sheet 41 arranged on the side farther from the wearer's skin than the heat generating composition 43 (the back sheet 6 side), and a breathable sheet 42 arranged on the side closer to the wearer's skin than the heat generating composition 43 (the top sheet 5 side). The heat generating composition 43 is interposed between the two sheets 41 and 42. The heat generating composition 43 contains an oxidizable metal powder, an electrolyte, water, etc., and generates heat by utilizing an oxidation reaction of the oxidizable metal powder when it comes into contact with air. The water vapor generated inside the heat generating element 4 by the heat generating reaction of the heat generating composition 43 passes through the breathable sheet 42 and the top sheet 5 and is released to the outside of the mask body 2, as shown by multiple upward arrows in FIG. 4.

[0020] The mask body 2 may contain volatile functional materials such as fragrances in some or all of its constituent parts, such as the heating element 4. In this case, the volatile components of the functional materials may migrate to the skin side of the wearer of the mask 1 together with the water vapor.

[0021] Any material that can be used for this type of sheet mask can be used without any particular restrictions as the material for each part of the mask 1. The sheet material constituting the mask 1, specifically, for example, the ear loop member 3, the sheets 41 and 42 constituting the heating element 4, the top sheet 5 and the back sheet 6, can be a fiber sheet mainly made of fibers such as nonwoven fabric, a resin film, etc., and a laminate of two or more types of sheet materials can also be used.

[0022] The mask 1 is typically stored in a folded form, and when unused, such as during the distribution process of the mask 1 as a product, it is in a folded form as shown in FIG. 2. When using the mask 1 in a folded form, as shown in FIG. 3, the first panel 21 and the second panel 22 in a superposed state are opened, and the pair of ear hook members 3, 3 arranged between the panels 21, 22 are folded outward. The mask 1 in a worn state has a three-dimensional shape portion 25 in a state in which the panels 21, 22 are unfolded, as shown in FIG. 1. In this way, the mask 1 is folded and has a flat shape when not in use, so it is relatively compact, easy to carry, and does not take up space when stored, but when worn, the mask body 2 has a three-dimensional shape, and an appropriate space is formed between the mask body 2 and the wearer's mouth, so that the breathlessness and discomfort caused by wearing the mask are reduced, and the mask has excellent wearing comfort and adhesion.

[0023] As described above, when the first panel 21 and the second panel 22 are deployed, the mask 1 is configured so that the central portion of the mask body 2 in the lateral direction Y forms a three-dimensional shape portion 25 that protrudes toward the non-skin facing surface 2b. In the mask 1 that forms a three-dimensional shape when worn in this manner, it is preferable that the mask 1 has an ear loop member connector 36 in which a pair of ear loop members 3, 3 are joined to each other via a connection portion 35. That is, when the mask 1 is unused, it is preferable that the pair of ear hook members 3, 3 have a connection portion 35 at which the ends opposite to the side where the mask body 2 is joined to each other. When the mask 1 is to be used, the connection portion 35 is cut to separate one of the pair of ear hook members 3, 3 from the other. This example is shown in Figs. 5 and 6.

[0024] The connection part 35 is typically located at the boundary between one and the other of the pair of ear hook members 3, 3 in the ear hook member connector 36. It is preferable that the connection part 35 can be easily cut by a simple operation such as gently pulling the ear hook member connector 36 with the fingers without using a cutting tool such as scissors. The connection portion 35 is typically a non-break portion of a break-inducing line provided at a boundary extending in the vertical direction X between one and the other of a pair of ear-hanging members 3, 3 in the ear-hanging member connection body 36. It is preferable that two or more connection portions 35 are intermittently arranged at intervals D1 in the vertical direction X.

[0025] When the mask 1 having such a characteristic configuration is worn in the folded form as shown in Fig. 2, the first panel 21 and the second panel 22 are unfolded as shown in Fig. 3. During this process, the ear-hook member connection body 36, which is formed by connecting the pair of ear-hook members 3, 3 via the connection part 35, moves so as to rise up from the skin-facing surface 2a of the mask body 2. Then, a gap into which fingers can be inserted is formed between the connection part 35 of the ear-hook member connection body 36 and the part of the mask body 2 along the fold line 20L, such as the three-dimensional shape part 25. The ear-hook member connection body 36 can be grasped by inserting fingers into the gap, and the mask 1 can be smoothly put on after that. A mask that is substantially flat and does not have a three-dimensional shape as described in Patent Document 1 is unlikely to have the above-mentioned problem of "the earhook member connector floating up when the folded mask is unfolded" even if it has an earhook member connector. Even if the earhook member connector floats up when the mask is unfolded, it is difficult to form a sufficient gap between the raised earhook member connector and the mask body to allow insertion of fingers, making the mask inferior to Mask 1 in terms of ease of operation of the earhook member when worn. Furthermore, when manufacturing the mask 1 of the present invention, the ear hook member connection body 36, which is formed by a pair of ear hook members 3, 3, is handled. This improves transport stability compared to when the ear hook members 3 are handled individually, and effectively prevents inconveniences such as the ear hook members 3 unintentionally turning over or shifting during transport, thereby enabling the mask 1 to be stably manufactured with a high yield rate. Thus, the sheet mask of the present invention, typified by Mask 1, is excellent both during production and use.

[0026] In particular, in this embodiment, as described above, the panel joint 23 that enables the formation of the three-dimensional shape portion 25 is configured to include the nose side joint 231 and the chin side joint 232 that are spaced apart in the vertical direction X. Therefore, when the mask body 2 is deployed, the earhook member connector 36 is likely to float up, and the desired effects of the present invention can be achieved more reliably.

[0027] The length L1 in the horizontal direction Y of the ear-hook member connector 36 in the unfolded state (see Fig. 5 and Fig. 7(a)) is preferably longer than the sum L2 of the lengths L2a, L2b (see Fig. 7(b)) in the horizontal direction Y at the measurement position of the length L1 and at the same position in the vertical direction X of each of the pair of ear-hook members 3, 3 when the connection portion 35 constituting the ear-hook member connector 36 is cut. In short, the above-mentioned "total length L2" is the sum of the total lengths L2a, L2b in the horizontal direction Y measured at the measurement position of the length L1 and at the same position in the vertical direction X (for example, the position overlapping with the double-headed arrow indicated by the symbol "L1" in Fig. 5 in plan view) for each of the pair of ear-hook members 3, 3 after the connection portion 35 is cut, and these measurements are summed, and L2 = L2a + L2b. When the above-mentioned relationship "length L1>total length L2" is satisfied, the earhook member connector 36 is more likely to float up when the mask body 2 is unfolded, so that the desired effect of the present invention can be more reliably achieved. The above-mentioned relationship can be satisfied, for example, when the pair of earhook members 3, 3 constituting the earhook member connector 36 are stretchable in the lateral direction Y. From the viewpoint of making the mask 1 comfortable to wear on the ears when worn due to the establishment of the above-mentioned magnitude relationship, the ratio of the length L1 to the total length L2, as L1 / L2, is preferably 0.7 or more, and more preferably 0.8 or more. From the viewpoint of making it easier for the earhook member connector 36 to float when the mask body 2 is deployed, L1 / L2 is preferably 0.99 or less, and more preferably 0.95 or less.

[0028] In order to make it easier for the earhook member connector 36 to float up when the mask body 2 is unfolded and to more reliably achieve the specified effects of the present invention, it is preferable that the earhook member 3 has elasticity in the lateral direction Y. The ear hook member 3, which is stretchable in the horizontal direction Y, may be made of a stretchable sheet material, or may be made of a non-stretchable sheet material to which a stretchable material such as an elastic member is joined, thereby enabling the entire piece to exhibit stretchability.

[0029] Examples of sheet materials for forming the ear-hook member 3 having elasticity in the lateral direction Y include (1) elastic nonwoven fabrics in which a stretchable fiber layer is integrated on both sides or one side of an elastic fiber layer, (2) elastic nonwoven fabrics in which a stretchable fiber layer is integrated on both sides or one side of a net-like elastic sheet, (3) elastic nonwoven fabrics in which a stretchable fiber layer is integrated on both sides or one side of an elastic sheet made of an elastic film, (4) elastic nonwoven fabrics in which a large number of elastic filaments arranged to extend in one direction without crossing each other are integrated into an extensible fiber layer, and (5) composite elastic members in which an elastic member extending in one direction is fixed in a non-stretched or stretched state between two sheet materials made of nonwoven fabrics or the like having an uneven shape. The "stretchable fiber layer" referred to here includes i) a fiber layer that is stretchable before being integrated with an elastic material, and ii) a fiber layer that is made stretchable by mechanical processing or the like after being integrated with an elastic material. Examples of a method for integrating the elastic fiber layer and the extensible fiber layer include a method of laminating them and entangling the fibers by water flow entangling or air through, and a method of bonding them by heat embossing, adhesive, ultrasonic waves, etc. As the composite elastic member of (5), for example, those described in International Publication No. 2018 / 189781 can be used.

[0030] Examples of the sheet material forming the ear hook members 3 include a fiber sheet and a resin film, and can be appropriately selected depending on the required quality of the mask 1, etc. The fiber sheet may be a nonwoven fabric, a woven fabric, a knitted fabric, or the like. The resin film may be an elastomer film. Examples of the nonwoven fabric include air-through nonwoven fabric, heat-rolled nonwoven fabric, spunlace nonwoven fabric, spunbonded nonwoven fabric, and meltblown nonwoven fabric. The sheet material forming the ear hook member 3 may have a single layer structure or a laminated structure of two or more layers. The laminated structure may be a laminated structure of the same type of sheet material or a laminated structure of different types of sheet materials, and an example of the latter laminated structure is a laminated structure of a nonwoven fabric and a resin film.

[0031] From the viewpoint of making it easier for the earhook member connector 36 to float up when the mask body 2 is unfolded and thus more reliably achieving the specified effects of the present invention, it is preferable that the earhook member 3 contains an elastomer film. As the elastomer film, a film made of a thermoplastic elastomer or an elastic resin can be used. Examples of the thermoplastic elastomer include polyethylene-based elastomers, styrene-based elastomers, polyolefin-based elastomers, polyester-based elastomers, and polyurethane-based elastomers. The elastic resin may be rubber or the like. The elastomer film may contain one of these alone or two or more of them. A preferred example of a sheet material for forming the ear hook member 3 having elasticity in the lateral direction Y is a three-layer composite sheet having an elastomer film interposed between two opposing layers of nonwoven fabric.

[0032] As described above, the ear hook member 3 is preferably provided with a planar line-of-sight cut 31 formed by cutting the ear hook member 3 and into which the wearer's ear is inserted when worn. The cut 31 preferably has a non-cut portion 32 of the ear hook member 3 at the middle position in the extension direction of the cut 31 when unused. That is, the cut 31 of this embodiment is preferably not continuous over the entire length of its extension direction, but is discontinuous at the formation position of the non-cut portion 32. Since the cut 31 is discontinuous in this way, the ear hook member connection body 36 is given elasticity in the lateral direction Y, so that the ear hook member connection body 36 is more likely to float up when the mask body 2 is unfolded, as described above. In addition, if the cut 31 is discontinuous, the positional deviation of the ear hook member connection body 36 during transportation during the manufacture of the mask 1 is effectively prevented, so that the yield rate of the mask 1 can be further improved. In this way, making the cut 31 discontinuous is useful both during the manufacture and use of the mask 1. Since it is preferable that the ear hook member 3 has elasticity in the horizontal direction Y, it is particularly preferable that the cut portion 31 has a portion extending in the vertical direction X and has a non-cut portion in the portion extending in the vertical direction X.

[0033] In order to ensure that the ear hook member connector 36 exerts its desired effect, it is preferable to set the dimensions of each part of the ear hook member connector 36 (see FIG. 6) as follows. The dimensions of each part are for the ear hook member connector 36 in its unfolded and extended state. The "unfolded and extended state" refers to the ear hook member connector 36 being unfolded in a flat plane and then maximally extended to the designed dimensions. Length 35L of connecting portion 35 in the longitudinal direction X is preferably 0.1 mm or more, more preferably 0.3 mm or more, even more preferably 0.5 mm or more, and preferably 20 mm or less, more preferably 10 mm or less, even more preferably 5 mm or less. By having length 35L within the above range, ease of cutting of connecting portion 35 can be ensured, while the inconvenience of connecting portion 35 being unintentionally cut during the manufacture of mask 1 can be effectively prevented. The distance D1 between the multiple connection parts 35, 35 arranged at intervals in the vertical direction X is preferably 0.1 mm or more, more preferably 0.3 mm or more, and even more preferably 0.5 mm or more, from the viewpoint of facilitating the floating of the earhook member connection body 36 when the mask body 2 is unfolded. From the viewpoint of making it easier to cut the connection portion 35 when the mask 1 is worn, the distance D1 is preferably 30 mm or less, more preferably 20 mm or less, and further preferably 10 mm or less. The distance D2 between the upper edge of the earhook member connector 36 and the connection portion 35 closest to the upper edge is preferably 0.1 mm or more, more preferably 1.5 mm or more, and even more preferably 3 mm or more, from the viewpoint of making it easier to cut the connection portion 35 when putting on the mask 1. From the viewpoint of facilitating the floating of the earhook member connector 36 when the mask body 2 is deployed, the distance D2 is preferably 70 mm or less, more preferably 50 mm or less, and further preferably 30 mm or less. The distance D3 between one and the other of a pair of cut portions 31 in the earhook member connector 36 is preferably 10 mm or more, more preferably 20 mm or more, and even more preferably 30 mm or more, from the viewpoint of facilitating the floating of the earhook member connector 36 when the mask body 2 is unfolded. From the viewpoint of facilitating the floating of the earhook member connector 36 when the mask body 2 is deployed, the distance D3 is preferably 100 mm or less, more preferably 80 mm or less, and further preferably 60 mm or less. The length 31L of the cut portion 31 in the horizontal direction Y is preferably 5 mm or more, more preferably 20 mm or more, and even more preferably 35 mm or more, from the viewpoint of providing the ear hook member 3 with the necessary and sufficient functionality for hanging on the wearer's ear. Moreover, the length 31L is adjusted so that the total length in the horizontal direction Y when the mask 1 is worn is equal to or less than the distance from the center of the wearer's ear to the nose, and from the viewpoint of making the mask 1 comfortable to wear, the length 31L is preferably equal to or less than 90 mm, more preferably equal to or less than 75 mm, and even more preferably equal to or less than 60 mm.

[0034] Next, a method for producing a sheet mask of the present invention will be described. An example of a production apparatus 100 used to carry out the method for producing the mask 1 is shown in FIG. The manufacturing apparatus 100 typically includes a first manufacturing section 110 for manufacturing the continuous mask body 10, and a second manufacturing section 120 for manufacturing the ear hook members 3 which are components of the continuous mask body 10. The continuous mask body 10 is a strip-shaped sheet in which multiple product units 11 of the mask 1 are connected in one direction, and is cut into individual product units 11 to obtain individual masks 1. The continuous mask body 10 preferably includes a strip-shaped continuous mask body 20 that optionally includes a continuous heating element 40, and multiple ear-hanging member connectors 36 joined to the continuous mask body 20. In the figure, the symbol MD indicates the machine direction of intermediate products such as the mask web 10 and the sheet material 30, which are the final products of the mask 1, and the symbol CD indicates the cross machine direction perpendicular to the conveying direction MD.

[0035] In the first production section 110, first, a band-shaped non-breathable sheet 41 continuing in one direction is transported in a transport direction MD parallel to the continuous direction, and a heat generating composition 43 is arranged by applying or spraying it on a portion of one side of the sheet 41 corresponding to the product unit 11. When one product unit 11 includes two heat generating compositions 43 corresponding to the panels 21, 22 of the mask body 2, typically, a pair of heat generating compositions 43, 43 juxtaposed in the transport perpendicular direction CD is arranged on the portion of the non-breathable sheet 41 corresponding to the product unit 11. Next, it is preferable to join a belt-shaped breathable sheet 42 that is continuous in one direction to the surface of the non-breathable sheet 41 on which the heat generating composition 43 is placed, and to cover the entire surface of the sheet 41 on which the heat generating composition 43 is placed with the sheet 42. In this way, a belt-shaped heat generating body 40 is produced. Typically, the heat generating element continuous body 40 has a configuration in which a plurality of heat generating elements 4, each of which has a heat generating composition 43 interposed between two sheets 41, 42, are connected in one direction (the conveying direction MD).

[0036] In the first manufacturing section 110, the belt-shaped heating element continuous body 40 being conveyed in the conveying direction MD is then cut into portions (pairs of heating elements 4, 4 arranged side by side in the conveying perpendicular direction CD) corresponding to the product units 11, and the cut portions are preferably sequentially supplied between the belt-shaped top sheet 5 and the belt-shaped back sheet 6 being conveyed in the same direction MD. In this way, a belt-shaped mask body continuous body 20 is manufactured. Typically, the mask body continuous body 20 has a configuration in which a plurality of mask bodies 2, each having a configuration in which a pair of heating elements 4, 4 is interposed between the two sheets 5, 6, are arranged in one direction (conveying direction MD). A joining means such as a hot melt adhesive may be arranged in advance at the intended position of the heating element 4 on the top sheet 5 and / or the back sheet 6. In addition, from the viewpoint of increasing the unity between the components of the mask body continuous body 20, the mask body continuous body 20 may be pressed in the thickness direction using a press roll or the like.

[0037] In the first manufacturing section 110, it is preferable to place the ear hook member connector 36 manufactured in the second manufacturing section 120 at a portion corresponding to the product unit 11 on one side (the side on the top sheet 5 side) of the band-shaped mask body continuous body 20 being transported in the transport direction MD. Furthermore, it is preferable to join the mask body continuous body 20 and the ear hook member connector 36 by a joining means to form the ear hook member joint 24 (ear hook member joining process). As the joining means, known joining means such as heat embossing, fusion processing using ultrasonic processing, hot melt adhesive, etc. can be used. The mask continuous body 10 manufactured in this way has a configuration in which a plurality of intermediate masks 1 are connected in one direction (transport direction MD) in which "ear hook member connectors 36 in which a pair of ear hook members 3, 3 are connected to each other via joints 35" are fixed to one side (the side on the top sheet 5 side) of the mask body 2 in an unfolded state in which the fold line 20L is not formed.

[0038] In the first manufacturing section 110, it is preferable to next carry out, in this order, a process of folding the strip-shaped continuous mask web 10 being transported in the transport direction MD in half in the perpendicular transport direction CD (folding process), and a process of partially forming a panel joint portion 23 in the folded continuous mask web 10 (panel joining process). In the folding process, it is preferable to fold the continuous mask web 10 in half in the perpendicular direction CD with the earhook member connector 36 and the top sheet 5 on the inside (and the back sheet 6 on the outside) by transporting the continuous mask web 10 in the transport direction MD along a folding guide provided on the transport path. The fold line formed in the continuous mask web 10 by this folding and extending in the transport direction MD is the fold line 20L of the mask body 2. In the panel joining step, it is preferable to perform a fusion process such as thermal embossing or ultrasonic processing on a part of each of the multiple product units 11 in the continuous mask web 10 folded in half in the folding step to form panel joints 23 (nose side joint 231, chin side joint 232). As a result, each product unit 11 of the continuous mask web 10 has substantially the same configuration as the mask 1, which is the product to be manufactured.

[0039] In the first manufacturing section 110, it is preferable to cut away unnecessary portions 10T from the continuous band-shaped mask body 10 thus manufactured, and cut the continuous mask body 10 into product units 11. In this way, a plurality of masks 1 folded in half as shown in FIG. 2 are continuously manufactured.

[0040] The manufactured masks 1 are then optionally individually packed in a packaging material (not shown) (packaging process). The manufacturing method of the sheet-type mask of the present invention may include the packaging process. By individually packaging the masks 1 in this way, the masks 1 are less susceptible to external influences such as friction and moisture during transportation, and the ear hook connectors 36 are more easily lifted when the mask body 2 is unfolded. When using the mask 1 (packaged sheet mask) manufactured through the packaging process, the packaging material is unsealed and the mask 1 is removed from the packaging material. This brings the exothermic composition 43 into contact with oxygen in the air, and the heating element 4 starts to generate heat. In addition, if a volatile functional material such as a fragrance is added to the mask body 2, the effect of the functional material is exerted.

[0041] The ear-hook member connection body 36 used to manufacture the continuous mask web 10 in the first manufacturing section 110 is preferably manufactured in the second manufacturing section 120. Typically, in the second manufacturing section 120, the sheet material 30 constituting the main part of the ear-hook member connection body 36 (ear-hook member 3) is conveyed in a conveying direction MD parallel to the longitudinal direction of the sheet material 30, and various processes are performed on the sheet material 30 to continuously manufacture a plurality of single-piece ear-hook member connection bodies 36. An example of this is shown in FIG.

[0042] The processing applied to the sheet material 30 in the second production section 120 includes the processing of forming the cutouts 31, the cutting processing for cutting out the individual ear hook member connection bodies 36 from the strip-shaped sheet material 30, and the like. The ear hook member connection body 36 (ear hook member 3) is preferably stretchable in the longitudinal direction, and is preferably stretchable with the ear hook member joint 24 as a fixed end in the mask 1. Therefore, the processing applied to the sheet material 30 in the second production section 120 typically includes a stretching processing for imparting stretchability to the sheet material 30. The stretching processing is typically performed prior to the processing involving cutting of the sheet material 30, such as the processing of forming the cutouts 31 and the processing of cutting out the individual ear hook member connection bodies 36 from the sheet material 30.

[0043] The second manufacturing section 120 typically includes an expansion processing section 121 that performs expansion processing on the sheet material 30. In the expansion processing section 121, it is preferable to carry out a process (stretching process) in which the belt-shaped sheet material 30, which is continuous in one direction, is conveyed through an interlocking portion of a pair of processing members 121A, 121B that interlock with each other, with the one direction being the conveying direction MD. It is preferable that the processing members 121A and 121B are cylindrical toothed rolls, each having axially extending convex teeth (not shown) and grooves (not shown) alternately on the peripheral surface along the circumferential direction of the roll. It is preferable that the processing members 121A and 121B are arranged so that their axial directions are parallel and the toothed grooves provided on the peripheral surfaces of the rolls mesh with each other, and that they rotate in opposite directions around their axes. In the stretching process, the sheet material 30 introduced between the pair of processing members 121A, 121B has the bonds between the constituent fibers partially broken by the meshing of one tooth and the tooth bottom of the other of the processing members 121A, 121B, which provides the sheet material 30 with an extension margin, and the sheet material 30 becomes stretchable in the conveying direction MD. The stretching process may be performed over the entire area of ​​the belt-shaped sheet material 30 in the cross-machine direction CD, or may be performed only in a part of the cross-machine direction CD. For example, the latter method is used when it is desired to impart stretchability to only desired portions of the ear hook member 3.

[0044] In the second manufacturing section 120, the strip-shaped sheet material 30 thus stretched is preferably conveyed in the conveying direction MD, while being cut by a cutting means (not shown) to form the cut portions 31. Then, the strip-shaped sheet material 30 is cut into portions corresponding to the product units 11 in the cutting section 122, and a plurality of individual ear hook member connected bodies 36 are continuously manufactured (ear hook member connected body manufacturing process). In the ear hook member connected body manufacturing process, in addition to the cutting of the strip-shaped sheet material 30 into individual sheets, it is also preferable to cut off unnecessary portions 30T (see FIG. 8) from the sheet material 30. The cutting section 122 typically includes a cutter roll 122A having a plurality of cutter blades (not shown) on its circumferential surface, and an anvil roll 122B arranged opposite to the circumferential surface of the cutter roll 122A. The anvil roll 122B is capable of rotating while sucking the sheet material 30.

[0045] In the second manufacturing section 120, it is preferable to intermittently supply the plurality of individual sheets of the ear-hook member connected bodies 36 obtained in the ear-hook member connected body manufacturing process to the band-shaped mask body continuous body 20 being transported along the transport path of the first manufacturing section 110 for each product unit. That is, in the ear-hook member joining process, it is preferable to intermittently join the plurality of individual sheets of the ear-hook member connected bodies 36 produced in the ear-hook member connected body manufacturing process to the mask body continuous body 20 for each product unit. In this way, by supplying the ear-hook member connected bodies 36 intermittently, the ear-hook member connected bodies 36 are less susceptible to the effect of static electricity before and after joining the ear-hook member connected bodies 36 to the mask body continuous body 20, and the ear-hook member connected bodies 36 are prevented from turning over during transportation due to the static electricity. The second manufacturing unit 120 typically includes a transfer unit 123 and a joining unit 124 in this order downstream of the cutting unit 122 in the transport direction MD. The ear hook member connectors 36 manufactured in the cutting unit 122 are intermittently supplied in units to the joining unit 124 by the transfer unit 123, and are joined to predetermined positions of the continuous mask body 20 being transported through the first manufacturing unit 110 by the joining unit 124, thereby forming ear hook member connectors 24 (ear hook member joining process). The ear hook member connectors 36 manufactured in this way in the second manufacturing unit 120 are supplied to the first manufacturing unit 110 and joined to the continuous mask body 20 to become part of the continuous mask body 10.

[0046] The joining processing section 124 which performs the ear hook member joining process is a device for joining a plurality of workpieces together by fusion, and includes a fusion processing section 125 and a receiving tool 126 arranged opposite the fusion processing section 125. The configuration of the joining processing section 124 is not particularly limited, and for example, the fusion processing section 125 may be a section which performs ultrasonic processing on the workpieces to melt and soften them, or a section which performs heat processing instead of ultrasonic processing. In the illustrated embodiment, the fusion processing section 125 is an ultrasonic processing machine equipped with an ultrasonic horn which vibrates ultrasonically, and the receiving tool 126 is an anvil roll arranged at a position opposite the vibration application surface of the tip of the ultrasonic horn.

[0047] As described above, the manufacturing method of the mask 1 preferably includes an earhook member connection manufacturing process (single-sheet process) in which the earhook member connection bodies 36 are cut out from a strip-shaped sheet material 30, an earhook member joining process in which the earhook member connection bodies 36 are joined to the continuous mask body 20 to manufacture the continuous mask body 10, a folding process in which the continuous mask body 10 is folded in the perpendicular direction CD to overlap the first panel 21 and the second panel 22 included in the continuous mask body 10, and a panel joining process in which the first panel 21 and the second panel 22 overlapped in the folding process are partially joined.

[0048] According to the manufacturing method of the mask 1 having the above steps, the ear hook members 3, which are particularly prone to defects such as curling up and misalignment during manufacturing, are treated as ear hook member connection body 36, which is configured in such a way that a pair of ear hook members 3, 3 included in one product unit of the mask 1 are connected via connection part 35. Therefore, defects caused by such ear hook members 3 are unlikely to occur, and high-quality masks 1 with excellent wearability can be stably manufactured with a high yield rate.

[0049] In particular, in the folding process, it is preferable to fold the continuous mask body 10 so that the ear-hook member connector 36 is disposed between the overlapping first panel 21 and second panel 22. This more effectively prevents the ear-hook member connector 36 from shifting position during transportation of the continuous mask body 10 or the mask 1 after the folding process.

[0050] In the panel joining step, it is preferable to join the first panel 21 and the second panel 22 at a portion of the continuous mask body 10 that does not overlap with the ear-hook member connector 36 in a plan view. This more effectively prevents the ear-hook member connector 36 from shifting during transportation of the continuous mask body 10 or the mask 1 after the panel joining step.

[0051] While the present invention has been described above based on its preferred embodiments, the present invention is not limited to the above-described embodiments and can be modified as appropriate without departing from the spirit of the present invention. For example, the mask 1 in the above embodiment was a sheet-type mask that covers the wearer's nasal cavity and mouth, but the sheet-type mask of the present invention may be any mask that covers at least a part of the wearer's face, for example, an eye mask that covers the wearer's eyes. In addition, in the above embodiment, the ear hook portion (the portion into which the wearer's ear is inserted) of the ear hook member 3 was the cut portion 31 formed by a cut in the ear hook member 3, but in the sheet-like mask of the present invention, the configuration of the ear hook portion is not particularly limited, and for example, the ear hook portion may be formed from a through hole that penetrates the ear hook member 3 in the thickness direction. In the above embodiment, the mask 1 is provided with a heating element 4, but the sheet mask of the present invention does not have to be provided with a heating element. A cooling element may be provided instead of a heating element.

[0052] <1> The mask has a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular to the vertical direction, and covers at least a part of the wearer's face. The mask has a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. The mask body has a skin-facing surface that faces the skin of a wearer when worn and a non-skin-facing surface located on the opposite side, and includes a first panel and a second panel arranged on both left and right sides of a fold line that passes through a central portion in the lateral direction of the mask body and extends in the vertical direction, The mask body can be folded at the fold line with the skin-facing surface on the inside, so that the first panel and the second panel are overlapped, and the pair of earhook members are interposed between the two panels, A method for manufacturing a sheet-like mask, in which at least in the folded state, a pair of the ear hook members have a connection portion where end portions opposite to a side where the ear hook members are joined to the mask body are joined to each other, and the connection portion is cut for use, a manufacturing process of cutting out an ear hanging member connection body from a belt-shaped sheet material, in which a pair of the ear hanging members are connected to each other via the connection portion; an ear-hanging member joining step of joining the ear-hanging member connector to a continuous mask body including a plurality of the mask bodies to manufacture a continuous mask body; a folding process of folding the continuous mask web in a direction perpendicular to a transport direction perpendicular to the transport direction of the continuous mask web, so as to overlap the first panel and the second panel included in the continuous mask web; and a panel joining step of partially joining the first panel and the second panel that have been overlapped in the folding step. <2> In the folding step, the mask series is folded so that the ear-hook member connection body is disposed between the overlapped first panel and the overlapped second panel. <1> A method for producing the sheet mask according to claim 1. <3> In the panel joining step, the first panel and the second panel are joined at a portion of the mask continuum that does not overlap with the ear-hanging member connection body in a plan view. <1> or <2> A method for producing the sheet mask according to claim 1. <4> In the panel joining step, a joint portion (panel joint portion) of both panels is formed inside the contour lines of the first panel and the second panel. <1> ~ <3> 13. A method for producing the sheet mask according to claim 12. <5> The joint portion of the two panels extends along the contour lines of the first panel and the second panel and inwardly of the contour lines of the first panel and the second panel. <4> A method for producing the sheet mask according to claim 1. <6> The belt-shaped sheet material is provided with elasticity by stretching processing, The stretching process includes a step of conveying the strip-shaped sheet material through an interlocking portion of a pair of processing members that interlock with each other. <1> ~ <5> 13. A method for producing the sheet mask according to claim 12. <7> The method further comprises a packaging step of individually packaging the sheet-like masks manufactured through the panel joining step in a packaging material. <1> ~ <6> 13. A method for producing the sheet mask according to claim 12. <8> In the ear-hook member joining step, the plurality of sheets of the ear-hook member connection body manufactured in the ear-hook member connection body manufacturing step are intermittently joined to the mask body continuous body for each product unit. <1> ~ <7> 13. A method for producing the sheet mask according to claim 12.

[0053] <9> The ear hook member is provided with a planar line-of-sight cut portion formed by cutting the ear hook member and into which a wearer's ear is inserted when the ear hook member is worn, The cut portion has a non-cut portion of the ear hook member at a middle position in an extending direction of the cut portion before use. <1> ~ <8> 13. A method for producing the sheet mask according to claim 12. <10> The cut portion has a portion extending in the vertical direction in a plan view. <9> A method for producing the sheet mask according to claim 1. <11> The cut portion has a portion extending in one direction from the mask body side to the tip side of the ear hook member on the opposite side in a plan view. <9> or <10> A method for producing the sheet mask according to claim 1. <12> The ear hook member includes an elastomeric film. <1> ~ <11> 13. A method for producing the sheet mask according to claim 12. <13> The ear hook member connector has elasticity in its longitudinal direction. <1> ~ <12> 13. A method for producing the sheet mask according to claim 12. <14> The sheet mask is for covering the nasal cavity and mouth of a wearer. <1> ~ <13> 13. A method for producing the sheet mask according to claim 12.

[0054] <15> The mask has a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular to the vertical direction, and covers at least a part of the wearer's face. The mask has a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. The mask body has a skin-facing surface that faces the skin of a wearer when worn and a non-skin-facing surface located on the opposite side, and includes a first panel and a second panel arranged on both left and right sides of a fold line that passes through a central portion in the lateral direction of the mask body and extends in the vertical direction, The mask body is folded at the fold line with the skin-facing surface on the inside, so that the first panel and the second panel are overlapped, and the pair of earhook members are interposed between the two panels. a panel joint portion is formed in the mask body, in which edges extending in the vertical direction from the folding lines of the first panel and the second panel are joined to each other, and in a state in which both panels are unfolded, a three-dimensional shape portion is formed in which a central portion in the horizontal direction of the mask body including the panel joint portion protrudes toward the non-skin facing surface side; When unused, the sheet-like mask has a connection portion where the ends of the pair of earhook members opposite to the joint with the mask body are joined together, and the mask is used by cutting the connection portion. <16> The panel joints include a nose-side joint corresponding to the wearer's nose and a chin-side joint corresponding to the wearer's chin, and the nose-side joint and the chin-side joint are spaced apart in the vertical direction. <15> The sheet mask according to claim 1. <17> The panel joint portion is formed on the inside of the contour lines of the first panel and the second panel. <15> or <16> The sheet mask according to claim 1. <18> The panel joint portion extends along and inwardly of the contour lines of the first panel and the second panel. <15> ~ <17> 13. The sheet mask according to claim 12. <19> The distance (G) between the panel joint and the contour lines of the first panel and the second panel in the vicinity thereof is 0.1 mm or more and 10 mm or less, preferably 0.3 mm or more, more preferably 0.5 mm or more, and preferably 5 mm or less, more preferably 3 mm or less. <18> The sheet mask according to claim 1.

[0055] <20> The connection portion is a non-break portion of a break guide line provided at a boundary between one and the other of a pair of ear hook members in the ear hook member connection body, the boundary extending in the vertical direction. <15> ~ <19> 13. The sheet mask according to claim 12. <21> The horizontal length L1 in the expanded state of the ear-hanging member connection body in which the pair of ear-hanging members are connected to each other via the connection portion is longer than the sum L2 of the horizontal lengths of the pair of ear-hanging members at the measurement position of the length L1 and the same position in the vertical direction when the connection portion is cut. <15> ~ <20> 13. The sheet mask according to claim 12. <22> The ratio of the length L1 to the total length L2 is 0.7 or more and 0.99 or less, preferably 0.8 or more and preferably 0.95 or less, as expressed as L1 / L2. <21> The sheet mask according to claim 1. <23> The length (35L) of the connection portion in the vertical direction is 0.1 mm or more and 20 mm or less, preferably 0.3 mm or more, more preferably 0.5 mm or more, and preferably 10 mm or less, more preferably 5 mm or less. <15> ~ <22> 13. The sheet mask according to claim 12. <24> The connecting portions are arranged at intervals in the vertical direction, and the interval (D1) between the connecting portions is 0.1 mm or more and 30 mm or less, preferably 0.3 mm or more, more preferably 0.5 mm or more, and preferably 20 mm or less, more preferably 10 mm or less. <15> ~ <23> 13. The sheet mask according to claim 12.

[0056] <25> The ear hook member has elasticity in the lateral direction. <15> ~ <24> 13. The sheet mask according to claim 12. <26> The ear hook member includes an elastomeric film. <15> ~ <25> 13. The sheet mask according to claim 12. <27> The ear hook member is provided with a planar line-of-sight cut portion formed by cutting the ear hook member and into which a wearer's ear is inserted when the ear hook member is worn, The cut portion has a non-cut portion of the ear hook member at a middle position in an extending direction of the cut portion before use. <15> ~ <26> 13. The sheet mask according to claim 12. <28> The cut portion has a portion extending in the vertical direction in a plan view. <27> The sheet mask according to claim 1. <29> The cut portion has a portion extending in one direction from the mask body side to the tip side of the ear hook member on the opposite side in a plan view. <27> or <28> The sheet mask according to claim 1. <30> The mask is for covering the wearer's nasal passages and mouth. <15> ~ <29> 13. The sheet mask according to claim 12. [Explanation of symbols]

[0057] 1. Mask 2 Mask body 20L Fold line 21 Panel 1 22 Second Panel 23 Panel joint 24 Ear hook component joint 25 Three-dimensional shape part 3 Ear hook parts 35 Connection 36 Ear hook member connector 4 Heating element 10 Mask Continuum 20 Mask body continuum 30 Sheet material for forming ear hook member 100 Manufacturing equipment 124 Joint processing section

Claims

1. The mask has a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular to the vertical direction, and covers at least a part of the wearer's face. The mask has a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. The mask body has a skin-facing surface that faces the skin of a wearer when worn and a non-skin-facing surface located on the opposite side, and includes a first panel and a second panel arranged on both left and right sides of a fold line that passes through a central portion of the mask body in the horizontal direction and extends in the vertical direction, The mask body is folded at the fold line with the skin-facing surface on the inside, so that the first panel and the second panel are overlapped, and the pair of ear hook members are interposed between the two panels. a panel joint portion is formed in the mask body, in which edges extending in the vertical direction from the folding lines of the first panel and the second panel are joined to each other, and when both panels are unfolded, a three-dimensional shape portion is formed in which a central portion in the horizontal direction of the mask body including the panel joint portion protrudes toward the non-skin facing surface side; a connection portion at which the ends of the pair of earhook members opposite to the joint side with the mask body are joined together when the pair of earhook members are not used; the lateral length L1 in the expanded state of the ear-hook member connection body in which the pair of ear-hook members are connected to each other via the connection portion is longer than a sum L2 of the lateral lengths of the pair of ear-hook members at the measurement position of the length L1 and at the same position in the longitudinal direction when the connection portion is cut off, The sheet-like mask is used by cutting the connection portion.

2. 2. The sheet-type mask according to claim 1, wherein the panel joint includes a nose-side joint corresponding to the wearer's nose and a chin-side joint corresponding to the wearer's chin, and the nose-side joint and the chin-side joint are spaced apart in the vertical direction.

3. The sheet-type mask according to claim 1 or 2, wherein the ear hook members are stretchable in the lateral direction.

4. The sheet-like mask according to any one of claims 1 to 3, wherein the ear-hanging member includes an elastomer film.

5. The ear hook member is provided with a planar line-of-sight cut portion formed by cutting the ear hook member and into which a wearer's ear is inserted when the ear hook member is worn, The sheet-type mask according to any one of claims 1 to 4, wherein the cut portion has an uncut portion of the ear hook member at a middle position in an extension direction of the cut portion before use.

6. The mask has a vertical direction corresponding to the up-down direction of the wearer and a horizontal direction perpendicular to the vertical direction, and covers at least a part of the wearer's face. The mask has a pair of ear hook members connected to both ends of the mask body in the horizontal direction and engaged with the left and right ears of the wearer. The mask body has a skin-facing surface that faces the skin of a wearer when worn and a non-skin-facing surface located on the opposite side, and includes a first panel and a second panel arranged on both left and right sides of a fold line that passes through a central portion of the mask body in the horizontal direction and extends in the vertical direction, The mask body can be folded at the fold line with the skin-facing surface on the inside, so that the first panel and the second panel are overlapped, and the pair of earhook members are interposed between the two panels, into a folded form. At least in the folded state, the pair of earhook members have a connection portion at which end portions opposite to the joint side with the mask body are joined to each other, and the connection portion is cut for use; a lateral length L1 in an expanded state of an ear-hanging member connection body in which a pair of ear-hanging members are connected to each other via the connection portion is longer than a sum L2 of the lateral lengths of the pair of ear-hanging members at a measurement position of the length L1 and at the same position in the longitudinal direction when the connection portion is cut, a manufacturing process of cutting out an ear hanging member connection body from a belt-shaped sheet material, in which a pair of the ear hanging members are connected to each other via the connection portion; an ear-hanging member joining step of joining the ear-hanging member connector to a continuous mask body including a plurality of the mask bodies to manufacture a continuous mask body; a folding step of folding the continuous mask web in a direction perpendicular to a transport direction perpendicular to the transport direction of the continuous mask web, so as to overlap the first panel and the second panel included in the continuous mask web; a panel joining step of partially joining the first panel and the second panel that have been overlapped in the folding step, The belt-shaped sheet material is provided with elasticity by stretching processing, The method for manufacturing a sheet mask includes a step of transporting the strip-shaped sheet material so that the strip-shaped sheet material passes through an interlocking portion of a pair of processing members that interlock with each other, the stretching processing comprising:

7. 7. The method for manufacturing a sheet-type mask according to claim 6, wherein in the folding step, the mask continuous body is folded so that the ear-hanging member connection body is interposed between the overlapping first panel and the second panel.

8. The method for manufacturing a sheet-type mask according to claim 6 or 7, wherein in the panel joining step, the first panel and the second panel are joined at a portion of the mask continuous body that does not overlap with the earhook member connector in a planar view.

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