JP2011194067A - Mask with leak preventing section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively reduce a leakage rate of a mask with a leak preventing section interposed between a mask body and a wearer's face when the ask is worn.SOLUTION: The leak preventing section 14 of the mask 10 includes: a first sheet portion 22 disposed in such a way as can be layered on the mask body 12; a first connection part 24 to connect the first sheet portion to the mask body; a second sheet portion 26 disposed in such a way as can be layered on the first sheet portion; a second connection part 28 different from the first connection part to connect the second sheet portion to the first sheet portion; a third connection part 30 different from the first connection part and second connection part to connect the first sheet portion and second sheet portion to the mask body to form a pocket-shaped folded structure 32 between the mask body and the first and second sheet portions; and a fourth connection part 34 different from the first connection part, second connection part and third connection part, to connect a wearing band 16 to the second sheet portion.

Description

  The present invention relates to a mask provided with a leak prevention portion.

  In medical and safety masks, the gap formed between the mask and the face is reduced as much as possible in order to reduce (that is, improve) the leakage rate, which is an index of protection performance. It is requested. Therefore, conventionally, a mask having a mask body made of a filter material that covers the wearer's mouth and nose, and a leak prevention portion that is provided on the inner surface or the peripheral edge of the mask body and reduces the leakage rate by contacting the face when wearing is proposed. Has been.

  For example, Patent Document 1 discloses a main body that covers the face, ear straps attached to the main body, both sides of the inner surface of the main body, and a breathable sheet that is interposed in the gap between the main body and the face. A mask comprising: is disclosed. Patent Document 1 states that “as shown in FIG. 2A, a plurality of (or one) elastic materials 12 such as rubber threads extending in the vertical direction are sewn on one edge portion 11 b of the material sheet 11. 2 (paragraph [0016]), “Next, as shown in FIG. 2 (B), the material sheet 11 on the opposite side to which the elastic member 12 is attached. The edge portion 11a is sewn together in the same process as the stitching portion 5 of the main body portion 2, and the edge portion 11a of the material sheet 11 is attached to the main body portion 2. The material sheet 11 is sewn to the stitching portion 5. The length of the material sheet 11 is reduced from H0 to H1, and sewing is performed so as to bring the gathers (folds) 13 closer to each other, as shown in FIG. The material sheet 11 The edge portion 11b which is folded and has the elastic material 12 is overlapped with the edge portion 11a on the sewing portion 5a side, and only the upper and lower ends 14, 14 of the edge portion 11b are sewn and fixed to the main body portion 2. The auxiliary piece 10 has a three-dimensional gather shape. When the inner surface sheet 2b side of the main body 2 is deformed into a concave shape, the auxiliary piece 10 rises three-dimensionally from the inner surface of the main body 2 toward the face by the elastic force of the elastic member 12. (See FIG. 2D) ”(paragraph [0017]).

  Patent Document 2 discloses a mask in which a sheet material having air permeability is folded into a mountain and a valley to form a gather, an adhesive band is formed at both ends of the gather, and each ridge of the gather is integrated at both ends. In the mask, a plurality of fusion recesses are formed at predetermined intervals across the upper and lower ends of the adhesive band by thermocompression bonding, and one end and the other end of the ear strap are respectively attached to the upper and lower ends of the adhesive band Is disclosed. In Patent Document 2, “First, hold the center of the upper and lower sides 3 and 3a of the mask, pull it up and down, stretch the collar 2 of the gather 2, and then put the ear straps 7 and 7a on both ears. Cover the nose and chin with the ridges 4 and 4a of the upper and lower sides 3 and 3a so that the upper and lower sides of the mask fit the nose and chin, and the side ends are the fusion recesses 6 and 6a. It bends at the boundary of the bulges 8, 8a, etc. adjacent to it, and as if there is a fine gather, it is gracefully and finely deformed, and it fits comfortably into the shape of the cheek. "(Paragraph [0012] ]).

Patent No. 3681222 JP 2007-167346 A

  The leak prevention part provided in the mask for medical use and safety and hygiene can be manufactured at a low cost with a simple structure, the contact state between the leak prevention part and the face can be stably maintained during wearing, and the appearance of the mask when wearing It is desired to have a design property that does not impair.

  The present invention provides a mask provided with a novel leakage prevention part that is interposed between a mask main body and a face during wearing and can effectively reduce the leakage rate.

  In one aspect, in a mask comprising a mask main body, a leak preventing portion attached to the mask main body, and a dressing band used for mask wearing, the leak preventing portion is arranged to be superposed on the mask main body. A sheet part, a first connection part for connecting the first sheet part to the mask body, a second sheet part arranged to be superposed on the first sheet part, and a second connection part different from the first connection part A second connecting portion for connecting the second sheet portion to the first sheet portion and a third connecting portion different from the first connecting portion and the second connecting portion, wherein the first sheet portion is connected to the mask body. A mask main body and a first sheet part having at least one of a function of connecting the second sheet part to the mask body, and a function of connecting the second sheet part to the first sheet part. And the first sheet A third connection part forming a pocket-like folded structure in at least one of the second and second sheet parts, and a fourth connection different from the first connection part, the second connection part and the third connection part And a fourth connecting portion for connecting the dressing band to the second sheet portion.

  When the mask according to one aspect of the present invention is worn on the face of the wearer, the pocket-shaped folded structure of the leakage prevention portion is connected to each of the first connection portion, the second connection portion, and the third connection portion. The mask body, the first sheet portion, and the second sheet portion are displaced so as to be separated from each other while maintaining the form, so that the pocket is opened as if it were expanded. Thereby, the leak prevention part extends outward from the mask body in the form of an expanded pocket, and is interposed between the mask body and the face of the wearer, and comes into contact with both cheeks of the wearer. During mask wearing, the dressing band connected to the second sheet portion acts to stably maintain the open state of the folded structure and the contact state between the leak preventing portion and the face.

  Therefore, according to the mask according to one aspect of the present invention, leakage through the mask body and the wearer's face is effectively prevented by the leakage prevention unit, and the leakage rate that is an index of the protective performance is effective. Is reduced (that is, improved). In addition, the leakage prevention part has only a shape that extends from the mask body when the mask is worn and substantially closes the space between the mask body and the wearer's face, and modifies the shape and dimensions of the mask body. Since it is not, it has the designability which does not impair the external appearance of a mask. Furthermore, since the leak prevention part has a very simple structure that only arranges the first and second sheet parts so as to be superposed, it can be manufactured with a simple configuration at low cost.

It is a top view (outer surface) which shows the mask by one Embodiment of this invention in a flat folding position. It is a top view (inner surface) which shows the mask of FIG. 1 in a flat folding position. It is a perspective view (inner surface) which shows the mask of FIG. 1 in a flat folding position. It is a top view (outer surface) shown in the extended position which bulges the mask of FIG. FIG. 5 is a perspective view (in the direction of arrow V in FIG. 4) showing the extended position in which the mask of FIG. FIG. 5 is a perspective view (in the direction of arrow VI in FIG. 4) showing the mask of FIG. It is a top view (inner surface) shown in the extended position which bulges the mask of FIG. FIG. 8 is a perspective view (in the direction of arrow VIII in FIG. 7) showing the extended position in which the mask of FIG. It is a perspective view (arrow IX direction of FIG. 7) shown in the extended position which bulges the mask of FIG. FIG. 2 is a diagram schematically showing a leakage prevention portion of the mask of FIG. 1, (a) a sectional view taken along arrow Xa-Xa in FIG. 2, (b) a sectional view taken along arrow Xb-Xb in FIG. 2 is a side view seen in the direction of the arrow Xc. It is a figure explaining the displacement aspect of the leak prevention part of FIG. 10, (a) Folding state of a folding structure, (b) Slight opening state of a folding structure, (c) The further opening state of a folding structure, d) The fully open state of the folded structure is shown respectively. It is a figure explaining the other displacement aspect of the leak prevention part of FIG. 10, (a) Folding state of folding structure, (b) Slightly opening state of folding structure, (c) Further opening state of folding structure , (D) shows the fully open state of the folded structure. It is a figure explaining the other displacement aspect of the leak prevention part of FIG. 10, and is a partial expanded sectional view which shows the complete open state of a folding structure. It is a perspective view which shows the state which mounted | wore the wearer's face with the mask of FIG. 1, (a) The figure seen from diagonally forward, (b) The figure seen from the side, (c) The figure seen from diagonally back. . It is a perspective view which shows the state which mounted | wore the wearer's face with the mask by a modification, (a) The figure seen from diagonally forward, (b) The figure seen from the side, (c) The figure seen from diagonally back. . It is a figure which shows the various modifications of a leak prevention part. It is a figure which shows the various modifications of a leak prevention part. It is a figure which shows the various modifications of a leak prevention part. It is a figure which shows the various modifications of the part with a pleat.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Corresponding components are denoted by common reference symbols throughout the drawings.
1-9 illustrate a mask 10 according to one embodiment of the present invention. The mask 10 can be used for medical applications and safety and health applications, but the application of the mask of the present invention is not limited.

  The mask 10 is attached to the mask body 12 made of a sheet-like filter material (for example, non-woven fabric, gauze, etc.) covering the wearer's mouth and nose (not shown), and is attached to the face of the wearer when wearing the mask. There are provided a leak prevention unit 14 that contacts and reduces (that is, improves) a leak rate that is an index of protection performance, and a dressing band 16 that is used for mask dressing.

  The mask body 12 includes left and right side edges 12a and 12b opposite to each other, upper and lower edges 12c and 12d opposite to each other intersecting the side edges 12a and 12b, an inner surface 12e and an outer surface 12f opposite to each other. Have When the mask 10 is properly used, both side edges 12a and 12b of the mask body 12 are arranged to extend vertically along the wearer's cheeks, and the upper edge 12c is along the wearer's nose and both cheeks. It is arranged to extend laterally, the lower edge 12d is arranged to extend laterally along the lower jaw of the wearer, the inner surface 12e is arranged to face the wearer's nose and mouth, and the outer surface 12f is arranged to be the wearer. It is arranged outward with respect to the face.

  The mask body 12 includes a pleated portion 18 that is displaceable between a flat folding position (FIGS. 1 to 3) and an extended position (FIGS. 4 to 9) that bulges in a bowl shape. The pleated portion 18 is formed with a plurality of pleats 20 having a fold extending between both side edges 12a, 12b of the mask body 12. The pleats 20 are formed by appropriately folding the sheet-like filter material of the mask body 12, and the folded materials are integrally fixed at portions along the side edges 12a and 12b of the mask body 12, A pleated portion 18 is formed. The mask 10 having the pleated portion 18 can fold the mask main body 12 into a rectangular flat shape in plan view when storing and transporting the mask (FIGS. 1 to 3), and the upper edge 12c and the lower edge when wearing the mask. The mask main body 12 can be expanded in a direction in which 12d is separated from each other to form a bowl-like bulge shape (FIGS. 4 to 9). A nose clip (not shown) that deforms along the wearer's nose and cheeks when wearing the mask and improves the adhesion between the upper edge 12c of the mask body 12 and the face can be installed on the upper edge 12c of the mask body 12. .

  The leak preventing portion 14 is provided on both of a pair of side portions (that is, regions adjacent to both side edges 12a and 12b) located on opposite sides of the mask body 12. In addition, according to the use etc. of the mask 10, the leak prevention part 14 can also be provided in any one of a pair of side part located in the mutually opposite side of the mask main body 12. FIG. The leak preventing portions 14 provided on both sides of the mask body 12 have the same configuration. In addition, the leak prevention part 14 provided in the both sides of the mask main body 12 can also be set as a mutually different structure. Hereinafter, the configuration of the leakage preventing portion 14 adjacent to one side edge 12a of the mask body 12 will be described with reference to FIG. FIG. 10 schematically shows the configuration of the leakage preventing portion 14 when the pleated portion 18 is in the folded position. To help understanding, the mask body 12, the first sheet portion 22, and the second portion Although the sheet portions 26 are drawn slightly apart from each other, they may be in contact with each other.

  The leakage prevention unit 14 is overlapped on the first sheet portion 22, the first sheet portion 22 arranged to be superposed on the mask body 12, the first connection portion 24 connecting the first sheet portion 22 to the mask body 12, and the first sheet portion 22. A second sheet portion 26 arranged so as to be able to be aligned, and a second connection portion 28 different from the first connection portion 24, and a second connection portion 28 for connecting the second sheet portion 26 to the first sheet portion 22; The third connecting portion 30 is different from the first connecting portion 24 and the second connecting portion 28, and has a function of connecting the first sheet portion 22 to the mask body 12, and connects the second sheet portion 26 to the mask body 12. It has at least one of the functions and the function of connecting the second sheet portion 26 to the first sheet portion 22, between the mask body 12 and the first sheet portion 22, and the first sheet portion 22. And second sheet part 26, a third connection part 30 that forms a pocket-like folded structure 32 in at least one of them, and a fourth connection different from the first connection part 24, the second connection part 28, and the third connection part 30. And a fourth connecting portion 34 that connects the dressing band 16 to the second seat portion 26.

  In the illustrated configuration, the leakage prevention unit 14 has a form in which a rectangular sheet material is folded in two in plan view. Therefore, the first sheet portion 22 and the second sheet portion 26 are manufactured integrally with each other and are connected to each other by the second connection portion 28. In addition, the 2nd connection part 28 may have a crease | fold and does not need to have it. On the other hand, the mask main body 12 and the first sheet portion 22 are manufactured separately from each other and are fixed to each other by the first connection portion 24. Further, the second seat portion 26 and the dressing band 16 are produced separately from each other and are fixed to each other by the fourth connection portion 34.

  The leak prevention unit 14 can have various forms other than the above. For example, the mask main body 12 and the first sheet portion 22 may be manufactured integrally with each other and connected to each other at the first connection portion 24 that becomes a fold. Further, the first sheet portion 22 and the second sheet portion 26 can be produced separately from each other and fixed to each other by the second connection portion 28. In addition, the second seat portion 26 and the dressing band 16 can be manufactured integrally with each other and connected to each other at the fourth connection portion 34. Various other modifications of the leak prevention unit 14 will be described later.

  The first sheet portion 22 includes a front edge 22a disposed along the side edge 12a of the mask body 12, a rear edge 22b positioned in the middle of the leak preventing portion 14 on the opposite side of the front edge 22a, a front edge 22a, and The upper edge 22c and the lower edge 22d opposite to each other intersecting both the rear edges 22b, and the inner surface 22e and the outer surface 22f opposite to each other. The front edge 22a and the rear edge 22b of the first sheet portion 22 have substantially the same length as the side edge 12a of the mask body 12, and the upper edge 22c and the lower edge 22d of the first sheet portion 22 are respectively the mask body. 12 has a length sufficiently shorter than the upper edge 12c and the lower edge 12d. The first sheet portion 22 has a front edge 22a, an upper edge 22c, and a lower edge 22d, the entire side edge 12a of the mask body 12, a part of the upper edge 12c adjacent to the side edge 12a, and the lower edge adjacent to the side edge 12a. The inner surface 22e is opposed to the inner surface 12e of the mask body 12 in a state of being substantially aligned with a part of the edge 12d, and is superposed on a region along the side edge 12a of the mask body 12.

  The first connecting portion 24 is formed along the side edge 12 a of the mask body 12 and the front edge 22 a of the first sheet portion 22, and fixes the front edge 22 a of the first sheet portion 22 to the side edge 12 a of the mask body 12. To do. In the illustrated configuration, the first connection portion 24 is formed over the entire length of the side edge 12 a of the mask body 12 and the front edge 22 a of the first sheet portion 22, thereby preventing leakage through the first connection portion 24. ing. In addition, on the premise that the deterioration of the leakage rate due to the presence of the first connection portion 24 can be suppressed within an allowable range, a plurality of dispersions arranged along the side edge 12a of the mask body 12 and the front edge 22a of the first sheet portion 22 are arranged. The 1st connection part 24 can also be formed.

  The second sheet portion 26 includes a front edge 26a disposed along the rear edge 22b of the first sheet portion 22, a rear edge 26b positioned at the end of the leak preventing portion 14 on the opposite side of the front edge 26a, and a front edge. The upper edge 26c and the lower edge 26d opposite to each other intersect with both the inner edge 26e and the rear edge 26b, and the inner surface 26e and the outer surface 26f opposite to each other. The front edge 26a and the rear edge 26b of the second sheet portion 26 have substantially the same length as the rear edge 22b of the first sheet portion 22, and the upper edge 26c and the lower edge 26d of the second sheet portion 26 are respectively The first sheet portion 22 has substantially the same length as the upper edge 22c and the lower edge 22d. The second sheet portion 26 has its front edge 26a, upper edge 26c, and lower edge 26d substantially aligned with the entire rear edge 22b, the entire upper edge 22c, and the entire lower edge 22d of the first sheet portion 22, respectively. In this state, the outer surface 26f is opposed to the outer surface 22f of the first sheet portion 22 so as to be superimposed on the entire first sheet portion 22.

  The second connection portion 28 is formed along the rear edge 22 b of the first sheet portion 22 and the front edge 26 a of the second sheet portion 26, and the front edge 26 a of the second sheet portion 26 is connected to the rear of the first sheet portion 22. Connect to edge 22b. In the illustrated configuration, the second connection portion 28 is formed over the entire length of the rear edge 22b of the first seat portion 22 and the front edge 26a of the second seat portion 26, and leakage through the second connection portion 28 is prevented. It is preventing. In addition, it is distributed and arranged along the rear edge 22b of the first sheet portion 22 and the front edge 26a of the second sheet portion 26 on the assumption that the deterioration of the leakage rate due to the presence of the second connection portion 28 can be suppressed to an allowable range. A plurality of second connection portions 28 can also be formed.

  The third connection portion 30 is formed along a part of the upper edge 12 c of the mask body 12, the upper edge 22 c of the first sheet portion 22, and the upper edge 26 c of the second sheet portion 26. Another third connection portion 30 is formed along a part of the lower edge 12 d of the mask body 12, the lower edge 22 d of the first sheet portion 22, and the lower edge 26 d of the second sheet portion 26. The third connection portions 30 connect (fix) a part of the upper edge 12 c of the mask body 12, the upper edge 22 c of the first sheet portion 22, and the upper edge 26 c of the second sheet portion 26, and the mask body 12. A part of the lower edge 12d, the lower edge 22d of the first sheet portion 22, and the lower edge 26d of the second sheet portion 26 are connected (fixed) to each other.

  In the illustrated configuration, one third connection portion 30 is formed over the entire length of a part of the upper edge 12c of the mask body 12, the upper edge 22c of the first sheet portion 22, and the upper edge 26c of the second sheet portion 26. A third connecting portion 30 is formed over the entire length of a part of the lower edge 12d of the mask body 12, the lower edge 22d of the first sheet portion 22, and the lower edge 26d of the second sheet portion 26. The occurrence of leakage through the portion 30 is prevented. Note that, assuming that the deterioration of the leakage rate due to the presence of the third connection portion 30 can be suppressed within an allowable range, a part of the upper edge 12c of the mask body 12, the upper edge 22c of the first sheet portion 22, and the second sheet portion 26 A plurality of third connection portions 30 that are distributed along the upper edge 26c can also be formed. Similarly, a plurality of third connection portions 30 are formed which are distributed along a part of the lower edge 12 d of the mask body 12, the lower edge 22 d of the first sheet portion 22, and the lower edge 26 d of the second sheet portion 26. You can also.

  Instead of the illustrated configuration, the third connecting portion 30 for connecting the upper edge 22c of the first sheet portion 22 to only a part of the upper edge 12 of the mask body 12, and the lower edge 22d of the first sheet portion 22 as the mask body. The third connection portion 30 may be configured to be connected to only a part of the lower edge 12d of the twelve. In this configuration, the pocket-shaped folding structure 32 is formed only between the mask body 12 and the first sheet portion 22, and is not formed between the first sheet portion 22 and the second sheet portion 26.

  Further, the third connecting portion 30 that connects the upper edge 26c of the second sheet portion 26 to only a part of the upper edge 12 of the mask body 12, and the lower edge 26d of the second sheet portion 26 is connected to the lower edge 12d of the mask body 12. It can also be set as the structure provided with the 3rd connection part 30 connected to only one part. In this configuration, the pocket-like folded structure 32 is provided between the mask body 12 and the first sheet portion 22 and between the first sheet portion 22 and the second sheet portion 26, as in the illustrated configuration. It is formed.

  Further, the third connecting portion 30 that connects the upper edge 26c of the second sheet portion 26 only to the upper edge 22c of the first sheet portion 22, and the lower edge 26d of the second sheet portion 26 is the lower edge of the first sheet portion 22. It can also be set as the structure provided with the 3rd connection part 30 connected only to 22d. In this configuration, the pocket-like folded structure 32 is formed only between the first sheet portion 22 and the second sheet portion 26, and is not formed between the mask body 12 and the first sheet portion 22.

  The fourth connecting portion 34 is formed at two locations close to the rear edge 26b of the second sheet portion 26 and close to the upper edge 26c and the lower edge 26d of the second sheet portion 26, so Both ends 16 a of the band 16 are individually fixed to the second sheet portion 26. Each of the fourth connecting portions 34 can stably hold the mask main body 12 on the face of the wearer, and has a tension for displacing the folding structure 32 of the leakage preventing portion 14 as described below. It is suitably formed at a position where it can be added stably.

  Here, in the present invention, “a second connection portion different from the first connection portion”, “a third connection portion different from the first connection portion and the second connection portion”, “a first connection portion, a second connection portion, and The item “fourth connection portion different from the third connection portion” includes differences in physical conditions such as position, size, and structure, but at least a difference in position is an essential requirement. In addition, the “first connection portion, the second connection portion, and the third connection portion” have positions, dimensions, structures, and the like that can form a “pocket-shaped folded structure” by their cooperation.

  When the mask is worn, the leak prevention portion 14 of the mask 10 is displaced from the substantially flat folded state shown in FIG. 10 to an open state where the mask body 12 rises with respect to the inner surface 12e of the mask body 12, and extends to the side of the mask body 12. In this state, by contacting the both cheeks of the wearer, it acts to reduce leakage between the side edges 12a and 12b of the mask body 12 and the cheeks of the wearer. Hereinafter, with reference to FIGS. 11-14, the characteristic displacement aspect of such a leak prevention part 14 is demonstrated.

  The leak prevention unit 14 moves the mask body 12 and the first sheet portion 22 by moving the pleated portion 18 of the mask body 12 from the folded position (FIGS. 1 to 3) to the extended position (FIGS. 4 to 9). The folding structure 32 (FIG. 10) formed between the first sheet portion 22 and the second sheet portion 26 is changed from the substantially flat folded state (FIG. 11A) to the inner surface of the mask body 12. It can be displaced to an open state (FIG. 11 (d)) rising up with respect to 12e.

  More specifically, first, when the pleated portion 18 of the mask body 12 is in the folded position (FIGS. 1 to 3), each fold structure 32 of the leak preventing portion 14 is connected to the mask body 12 as described above. The 1st sheet | seat part 22 and the 2nd sheet | seat part 26 exhibit the substantially flat folding state which overlapped mutually (FIG. 11 (a)). From this state, when the mask body 12 is slightly expanded in a direction in which the upper edge 12c and the lower edge 12d (FIG. 1) of the mask body 12 are separated from each other, the pleated portion 18 has a slightly bowl shape with the inner surface 12e as a recess. Deform. Accordingly, the space between the inner surface 12e of the mask main body 12 and the inner surface 22e of the first sheet portion 22 is slightly widened, and the folding structure 32 between the mask main body 12 and the first sheet portion 22 becomes the first connecting portion. While maintaining the connection form in each of the 24 and the third connection parts 30, the pockets are slightly opened as if they were inflated (FIG. 11B).

  At the same time, following the curvature of the inner surface 12e, the side edge 12a (FIG. 10) of the mask body 12 and the front edge 22a (FIG. 10) of the first sheet portion 22 are slightly curved, and the upper edge of the mask body 12 12c and the lower edge 12d, and the spatial distance between the upper edge 22c (FIG. 10) and the lower edge 22d (FIG. 10) of the first sheet portion 22 is an area adjacent to the side edge 12a and the front edge 22a. Slightly narrows. Accordingly, the spatial distance between the upper edge 26c (FIG. 10) and the lower edge 26d (FIG. 10) of the second sheet portion 26 is slightly narrowed in the region adjacent to the rear edge 26b. As a result, the second sheet portion 26 is automatically curved with the outer surface 26f (FIG. 10) as a concave, and the distance between the outer surface 22f (FIG. 10) of the first sheet portion 22 and the outer surface 26f of the second sheet portion 26 is slight. The folding structure 32 between the first sheet portion 22 and the second sheet portion 26 maintains the connection form in each of the second connection portion 28 and the third connection portion 30, as if the pockets were expanded. It is opened slightly as shown in FIG. 11 (b).

  From this state, when the mask body 12 is further expanded in a direction in which the upper edge 12c and the lower edge 12d are separated from each other, the folding structure 32 between the mask body 12 and the first sheet portion 22 is based on the same principle as described above. The folding structure 32 between the first sheet portion 22 and the second sheet portion 26 maintains the connection form in each of the first connection portion 24, the second connection portion 28, and the third connection portion 30, The pocket is further opened so as to expand (FIG. 11 (c)). From this state, when the mask body 12 is sufficiently expanded until the pleated portion 18 reaches the hook-shaped extended position (FIGS. 4 to 9), the mask body 12 and the first sheet portion 22 are operated in the same principle as described above. And the folding structure 32 between the first sheet portion 22 and the second sheet portion 26 are respectively the first connecting portion 24, the second connecting portion 28, and the third connecting portion 30. While maintaining the connection form in FIG. 5, the pockets are sufficiently opened so that the pockets expand and exhibit an open state in which they stand up against the inner surface 12e of the mask body 12 (FIGS. 11D and 13).

  In addition to or instead of the above-described displacement mode, the leakage preventing portion 14 is provided between the mask body 12 and the first sheet portion 22 and between the first sheet portion 22 and the second sheet portion by the tension applied to the dressing band 16. The folded structure 32 (FIG. 10) formed between the mask body 26 and the inner surface 12e of the mask body 12 rises from a substantially flat folded state (FIG. 12 (a)) (FIG. 12 (d)). Can be displaced.

  More specifically, first, when the pleated portion 18 of the mask body 12 is in the folded position (FIGS. 1 to 3), each fold structure 32 of the leak preventing portion 14 is connected to the mask body 12 as described above. The first sheet portion 22 and the second sheet portion 26 are in a substantially flat folded state in which they overlap each other (FIG. 12A). From this state, when a slight tension F is applied to the dressing band 16 in the direction from the outer surface 12f to the inner surface 12e of the mask body 12, the second sheet portion 26 is pulled by the dressing body 16 and the outer surface of the first sheet portion 22 is applied. The space between 22f (FIG. 10) and the outer surface 26f (FIG. 10) of the second sheet portion 26 is slightly widened, and the folded structure 32 between the first sheet portion 22 and the second sheet portion 26 is the first connection. While maintaining the connection form in each of the part 24 and the third connection part 30, it is slightly opened as if the pockets were inflated (FIG. 12B). At the same time, the first sheet portion 22 is pulled by the second sheet portion 26, and the distance between the inner surface 12e (FIG. 10) of the mask body 12 and the inner surface 22e (FIG. 10) of the first sheet portion 22 is slightly widened. The folding structure 32 between the first and second sheet portions 22 is slightly opened as if the pockets were inflated while maintaining the connection form in each of the second connection portion 28 and the third connection portion 30. (FIG. 12B).

  If tension F is further applied to the dressing band 16 from this state, the folding structure 32 between the first sheet portion 22 and the second sheet portion 26, the mask main body 12 and the first sheet are based on the same principle as described above. The folding structure 32 between the portions 22 is further opened so that the pocket expands while maintaining the connection form in each of the first connection portion 24, the second connection portion 28, and the third connection portion 30 ( FIG. 12 (c)). From this state, when a tension F equal to the tension applied when the wearer wears the mask 10 on the face is applied to the dressing band 16, the first sheet portion 22 and the second sheet portion 26 are based on the same principle as described above. And the folding structure 32 between the mask body 12 and the first sheet portion 22 are connected at the first connecting portion 24, the second connecting portion 28, and the third connecting portion 30, respectively. While maintaining the form, the pockets are sufficiently opened so that the pockets expand and exhibit an open state in which they stand up with respect to the inner surface 12e of the mask body 12 (FIGS. 12D and 13).

  As shown in FIG. 14, when the mask 10 is worn on the wearer's face in an appropriate state of use, the pleated portion 18 of the mask body 12 is placed at an extended position covering the nose and mouth of the wearer (FIG. 14 ( a)) and the tension F (FIG. 14B) applied to the second seat portion 26 from the dressing band 16 hung on the wearer's ear through the fourth connecting portion 34 (FIG. 10), The folded structure 32 (FIG. 10) exhibits the open state described above. The leak prevention portion 14 with the folded structure 32 in the open state extends to the side of the mask body 12 in the form of an expanded pocket, and both side edges 12a and 12b (FIG. 1) of the mask body 12 and the wearer both It is interposed between the cheeks and comes into contact with both cheeks while exhibiting a certain degree of shape retention (FIG. 14C). During wearing of the mask, the tension F of the dressing band 16 connected to the second sheet portion 26 spreads over substantially the entire leakage prevention portion 14, and the folded structure 32 is opened and the leakage prevention portion 14 and the face are in contact with each other. It acts to maintain a stable contact state.

  Therefore, according to the mask 10, the leakage between the both side edges 12a, 12b (FIG. 1) of the mask main body 12 and the cheeks of the wearer is effectively prevented by the leakage prevention unit 14, and the protective performance is improved. The leakage rate as an index is effectively reduced (that is, improved). In addition, the leak preventing portion 14 is extended from both side edges 12a and 12b of the mask body 12 in a proper wearing state of the mask 10 and has a shape that substantially blocks between the side edges 12a and 12b and both cheeks of the wearer. Since it does not change the shape and dimensions of the mask body 12, it has a design that does not impair the appearance of the mask 10. Furthermore, since the leak prevention part 14 has an extremely simple structure that only arranges the first and second sheet portions 22 and 26 so as to be foldable, it can be manufactured at a low cost with a simple configuration.

The mask according to the present invention can have various configurations other than those described above.
For example, the present invention can be applied to a mask (for example, known as a gauze mask) having a mask body with a simple structure that does not have a pleated portion. FIG. 15 shows a usage pattern of this type of mask 10 '. The mask 10 'has substantially the same configuration as the mask 10 described above except that it has a simple structure mask body 12' that does not have the pleated portion 18, and is therefore common to the corresponding components. A description thereof will be omitted.

  When the mask 10 'is worn on the wearer's face in a proper use state, the mask body 12' covers the wearer's nose and mouth (FIG. 15 (a)), and the dressing band hung on the wearer's ear A tension F is generated at 16 (FIG. 15B). Therefore, the folded structure 32 (FIG. 10) of the leak prevention unit 14 exhibits the above-described open state due to the tension F applied to the dressing band 16, and the leak prevention unit 14 extends to the side of the mask body 12 and It contacts both cheeks (FIG. 15 (c)). While the mask is being worn, the tension F of the dressing band 16 connected to the second sheet portion 26 spreads over substantially the entire leak prevention section 14, so that the folded structure 32 is opened and the leak prevention section 14 and the face The contact state is stably maintained. Therefore, the mask 10 'also prevents leakage between the side edges 12a, 12b (FIG. 1) of the mask body 12' and the cheeks of the wearer, and the leakage rate, which is an index of the protective performance, is effective. Is reduced (that is, improved). In addition, the leak preventing portion 14 is extended from the both side edges 12a and 12b of the mask body 12 'in an appropriate wearing state of the mask 10' and substantially between the both side edges 12a and 12b and the wearer's cheeks. Since it has only a closed shape and does not change the shape or dimensions of the mask body 12 ', it has a design that does not impair the appearance of the mask 10'. Furthermore, since the leak prevention part 14 has a very simple structure in which the sheet material is folded, it can be manufactured at a low cost with a simple configuration.

  FIG. 16 shows various forms of the leakage preventing portion 14 that can be employed in the mask of the present invention. For example, as the leakage preventing portion 14, the first sheet portion 22 and the second sheet portion 26 have substantially the same size and shape (FIG. 16A), and the first sheet portion 22 is the second sheet portion 26. A form having a larger size and shape (FIG. 16B) or a form in which the first sheet portion 22 has a smaller size and shape than the second sheet portion 26 (FIG. 16C) can be adopted. Moreover, the form (FIG. 16D) in which the positions of the first connection part 24 and the second connection part 28 are opposite to the above-described configuration (that is, the folding direction of the two folds is opposite) may be employed. Further, as described above, the third connecting portion 30 connects only between the mask body 12 and the first sheet portion 22 (FIG. 16E), or the third connecting portion 30 is the first sheet portion. It is also possible to adopt a form (FIG. 16F) in which only the connection between the second sheet portion 26 and the second sheet portion 26 is connected. Further, the second connection portion 28 is formed in a midway part other than the front edge 22a and the rear edge 22b (FIG. 10) of the first sheet portion 22 (FIG. 16G), A form (FIG. 16 (h)) formed in a midway region other than the front edge 26a and the rear edge 26b (FIG. 10) can also be adopted.

  The leak prevention part 14 can also have the form of multiple folds of three or more folds (FIG. 16 (i)). In this embodiment, the mask body 12 and the first sheet are interposed between at least one of the first connection portion 24 and the first sheet portion 22 and between the second connection portion 28 and the second sheet portion 26. An additional sheet portion 36 is provided that is foldably disposed on the portion 22 and the second sheet portion 26. A plurality of additional sheet portions 36 can be connected to each other through a fold-like connection portion similar to the second connection portion 28. The leakage prevention unit 14 having any one of these forms provides the above-described special effects.

  FIG. 17 shows various forms of the second sheet portion 26 of the leakage preventing portion 14 that can be employed in the mask of the present invention. Since the rear edge 26b of the second sheet portion 26 is located at the end of the leakage preventing portion 14, it is predicted that the shape directly affects the reduction of the leakage rate. For example, a plurality of slits 38 can be formed in the rear edge 26b of the second sheet portion 26 (FIG. 17A). According to this embodiment, since the plurality of strip-shaped pieces of the second sheet portion 26 divided by the slits 38 come in contact with each other along the face of the wearer, the second sheet portion 26 and the face of the wearer It is possible to improve the adhesion. Further, in order to improve the feeling of use and design of the wearer, a notch 40 is provided on the rear edge 26b of the second sheet portion 26 (FIGS. 17B and 17C), or the rear edge 26b is formed in a concave curve shape. (FIGS. 17D and 17E) or convex curves (FIGS. 17F and 17G) can be formed.

  FIG. 18 shows various forms of the third connection portion 30 of the leakage preventing portion 14 that can be employed in the mask of the present invention. Note that FIG. 18 shows the leakage prevention unit 14 in a deployed position where the third connection unit 30 is in a disconnected state. The third connecting portion 30 includes a part of the upper edge 12 c and the lower edge 12 d (FIG. 10) of the mask body 12, an upper edge 22 c and a lower edge 22 d (FIG. 10) of the first sheet portion 22, and the second sheet portion 26. The upper edge 26c and the lower edge 26d (FIG. 10) are not limited to the above-described form (FIG. 18A), and are separated from the upper edges 12c, 22c, 26c and the lower edges 12d, 22d, 26d. It may be formed at a position. For example, in the leakage preventing portion 14 shown in FIG. 16 (e), the third connection portion 30 formed between the mask body 12 and the first sheet portion 22 is separated from the upper edges 12c and 22c and the lower edges 12d and 22d. Thus, it is possible to adopt a form that extends obliquely in a straight line (FIG. 18B) or a form that extends away from the upper edges 12c, 22c and the lower edges 12d, 22d (FIG. 18C). Similarly, in the leakage preventing portion 14 of FIG. 16 (f), the third connection portion 30 formed between the first sheet portion 22 and the second sheet portion 26 includes upper edges 22c, 26c and lower edges 22d, A form (FIG. 18 (d)) that extends diagonally away from 26d and a form (not shown) that extends in a curved line can be employed. 16A, the third connection portion 30 formed between the mask main body 12, the first sheet portion 22, and the second sheet portion 26 has upper edges 12c, 22c, and 26c. Further, it is possible to adopt a form (FIG. 18E) that extends obliquely and linearly away from the lower edges 12d, 22d, and 26d, or a form (not shown) that extends in a curved line. Further, as shown in FIG. 18F, a part of the upper edge 12c and the lower edge 12d of the mask body 12 on which the third connection portion 30 is formed, the first sheet portion 22 within a range not impairing the original function of the mask. The upper edge 22c and the lower edge 22d, and the upper edge 26c and the lower edge 26d of the second sheet portion 26 may be formed obliquely.

  FIG. 19 shows various forms of the pleated portion 18 of the mask body 12 that can be employed in the mask of the present invention. Note that the form of the pleated portion 18 itself does not affect the function of the leak preventing portion 14. As the pleated portion 18, a so-called omega shape (FIGS. 19A and 19B) and a louver shape (FIGS. 19C and 19D) can be adopted.

  The dressing band 16 that can be used in the mask of the present invention is not limited to the illustrated ear hook type, and may be a knot type that is attached to the neck or head of the wearer. The dressing band 16 may or may not have elasticity such as rubber. In any configuration, it is desirable that the dressing band 16 can generate a tensile force that can stably hold the folded structure 32 of the leakage preventing portion 14 in the open position.

The mask according to the present invention can be made from various materials.
For example, the first sheet portion 22 and the second sheet portion 26 of the leak prevention unit 14 can be made from a resin film, a nonwoven fabric, or a combination of both. If the material which laminated | stacked the film and the nonwoven fabric is used, by arranging at least the nonwoven fabric on the inner surfaces 22e and 26e of the first sheet portion 22 and the second sheet portion 26, the feel of the leak preventing portion 14 is improved, Usability is improved. In this case, desired processing can be applied to the non-woven fabric to achieve improvement in touch, prevention of makeup removal, and the like. On the other hand, when a non-woven fabric that can be used as a filter material is used, since the filtration area of the entire mask increases, breathing becomes easier. Polyester, polyethylene, nylon, polypropylene, acrylic, polyurethane, polyvinyl and the like can be used as the material for the resin film and the nonwoven fabric. As a method for producing a resin film, a melt extrusion molding method, a solution casting method, a calender molding method, etc. can be adopted. Chemical bonds, stitch bonds, etc. can be used.

The mask according to the present invention can be manufactured by various methods.
For example, the sheet material integrally having the first sheet portion 22 and the second sheet portion 26 is folded in two, and the upper edges 22c, 26c and the lower edges 22d, 26d are fixed by the third connecting portion 30. Is prepared as a molded product of the leakage preventing portion 14, and the leakage preventing portion 14 (molded product) is provided on the first connection portion 24 and the first edge on the side edge 12 a (12 b) and the upper and lower edges 12 c, 12 d of the mask body 12 separately manufactured. The mask 10 can be manufactured by fixing the three connecting portions 30 and fixing the dressing band 16 to the second sheet portion 26.

  In addition, a long sheet material integrally including the first sheet portion 22 and the second sheet portion 26 is prepared, and an edge of the sheet material (the first sheet portion 22 is formed on the side edge 12a (12b) of the mask body 12 which is separately manufactured. The front edge 22a of the sheet material is fixed by the first connecting portion 24, and the sheet material is folded in half by the second connecting portion 28, and then the upper and lower edges of the sheet material (first and second sheet portions 22, 26). The upper edge 22c, 26c and the lower edge 22d, 26d) are fixed to the upper and lower edges 12c, 12d of the mask body 12 by the third connecting portion 30, and an excessive portion of the long sheet material is cut away. The mask 10 can be produced by fixing the dressing band 16 to the sheet portion 26.

  The fixing method for configuring the first connection part 24, the second connection part 28, the third connection part 30 and the fourth connection part 34 includes adhesion with an adhesive, adhesion with a double-sided tape, sewing with a sewing machine, etc. Sonic welding, heat sealing, etc. can be employed. In addition, the fixing portions constituting the first connection portion 24, the second connection portion 28, the third connection portion 30 and the fourth connection portion 34 can be formed in a linear shape, thereby improving the sealing performance. The flexibility can be improved by forming it in a shape.

DESCRIPTION OF SYMBOLS 10 Mask 12 Mask main body 14 Leak prevention part 16 Dressing band 18 Pleated part 22 1st sheet part 24 1st connection part 26 2nd sheet part 28 2nd connection part 30 3rd connection part 32 Folding structure 34 4th connection part

Claims (6)

In a mask comprising a mask body, a leakage prevention part attached to the mask body, and a dressing band used for mask wearing,
The leakage prevention part is
A first sheet portion arranged to be superposed on the mask body;
A first connecting portion for connecting the first sheet portion to the mask body;
A second sheet portion arranged to be superposed on the first sheet portion;
A second connecting portion different from the first connecting portion, wherein the second connecting portion connects the second sheet portion to the first sheet portion;
A third connecting portion different from the first connecting portion and the second connecting portion, the function of connecting the first sheet portion to the mask body, the function of connecting the second sheet portion to the mask body, And having at least one function of connecting the second sheet part to the first sheet part, between the mask body and the first sheet part, and between the first sheet part and the A third connecting portion that forms a pocket-like folded structure in at least one of the second sheet portions;
A fourth connection portion that is different from the first connection portion, the second connection portion, and the third connection portion, and includes a fourth connection portion that connects the dressing band to the second seat portion;
Mask characterized by.   The mask body has a side edge and an upper edge and a lower edge opposite to each other intersecting the side edge, the first connecting portion is formed along the side edge, and the first sheet portion Has a rear edge located in the middle of the leakage preventing portion, and an upper edge and a lower edge opposite to each other intersecting the rear edge, and the second connecting portion is formed along the rear edge. 2. The mask according to claim 1, wherein the second sheet portion has a rear edge located at an end of the leak preventing portion, and an upper edge and a lower edge opposite to each other intersecting the rear edge.   The third connecting portion connects the upper edge of the first sheet portion to the upper edge of the mask body, and connects the lower edge of the first sheet portion to the lower edge of the mask body. The mask according to claim 2.   The third connection portion connects the upper edge of the second sheet portion to the upper edge of the first sheet portion, and connects the lower edge of the second sheet portion to the lower edge of the first sheet portion. The mask according to claim 2, which is connected to the mask.   The mask body includes a pleated portion that is displaceable between a flat folded position and a bulging extended position, and the leak preventing portion is an operation for displacing the pleated portion from the folded position to the expanded position. Accordingly, the folding structure formed between at least one of the mask main body and the first sheet portion and between the first sheet portion and the second sheet portion is displaced from the folded state to the open state. The mask according to any one of claims 1 to 4.   The leak preventing portion is formed in at least one of the space between the mask main body and the first sheet portion and between the first sheet portion and the second sheet portion by tension applied to the dressing band. The mask according to claim 1, wherein the overlapping structure is displaced from a folded state to an open state.

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