WO2023008429A1

WO2023008429A1 - Mask

Info

Publication number: WO2023008429A1
Application number: PCT/JP2022/028784
Authority: WO
Inventors: 慎治濱口
Original assignee: サラヤ株式会社
Priority date: 2021-07-30
Filing date: 2022-07-26
Publication date: 2023-02-02
Also published as: JP2023020251A; CN117835861A

Abstract

Provided is a mask whereby the left and right longitudinal edges of the mask can be kept in close contact with the skin when worn. (a) The mask 1 comprises: a mask main body 2 having a contour line formed by an upper edge 13 and a lower edge 14 that extend in the left/right direction of the face and a left edge 15 and a right edge 16 that extend in the vertical direction of the face when the mask is worn on the face; and a strap 3 that has the ends thereof fixed to the left and right upper corners and the left and right lower corners, where the upper and lower edges and the left and right edges intersect. (b) The mask main body is folded in half along a center line 31 that is between the upper and lower edges and connects a left midpoint 32 that is on the left edge and a right midpoint 33 that is on the right edge. (c) The mask main body, folded in half, is: welded to form a left weld line 37, along a left diagonal line 36 that connects a point 34, on the center line, moved towards the right midpoint from the left midpoint and a point 35 on the left edge separated by the same distance from the left midpoint, towards the upper edge and lower edge; and welded to form a right welded line 41 along a right diagonal line 41 that connects a point 38, on the center line, moved from the right midpoint towards the left midpoint and a point 39 that is on the right edge and moved from the right midpoint by the same distance, towards the upper edge and lower edge.

Description

mask

The present invention relates to masks.

In order to prevent infectious diseases, it is important to fit the mask around the face so that there are no gaps. For this reason, many of the non-woven fabric masks on the market today have a nose wire embedded along the upper edge of the mask, and deformed to conform to the shape of the nose when worn. It is devised so that there is no gap between it and the skin. However, when looking at the left and right longitudinal edges of the mask, for example, when the ear straps are hung on the ears, a vertical force acts on the upper and lower ends of the mask in the vertical direction to bring them closer together. The middle portion of the vertical edge is lifted from the face, and a gap is likely to occur there. Therefore, in order to eliminate the gap by bringing the left and right vertical edges of the mask into close contact with the skin when the mask is worn, Patent Document 1 describes bending guide portions (for example, in one embodiment, the vertical edges are It has been proposed to form a substantially V-shaped notch that tapers inward from the edge.

Japanese Patent No. 6499032

The present invention provides a new mask that prevents gaps from forming between the mask and the skin by bringing the left and right vertical edges of the mask into close contact with the skin when worn, by a structure different from the invention proposed in Patent Document 1. intended to

To that end, an embodiment of the mask according to the invention comprises:
(a) By the upper edge (13) and lower edge (14) extending in the horizontal direction of the face and the left edge (15) and right edge (16) extending in the vertical direction of the face when worn on the face a contoured mask body (2);
A string (3) whose ends are fixed at the left and right upper edge corners and the left and right lower edge corners where the upper edge (13) and the lower edge (14) and the left edge (15) and the right edge (16) intersect ) and a mask (1) comprising
(b) said mask body (2) is between said upper edge (13) and said lower edge (14), and has a left midpoint (32) on said left edge (15) and said right edge (16); It is folded in half along the center line (31) connecting the upper right middle point (33),
(c) the mask body (2) folded in half,
a point (34) on said center line (31) and moved from said left midpoint (32) toward said right midpoint (33) and from said left midpoint (32) to said upper edge (13); A left weld line (37) is formed by welding along a left diagonal line (36) connecting points (35) on said left edge (15) equidistant towards said lower edge (14). A point (37) on the center line (31) and moved from the right intermediate point (33) toward the left intermediate point (32) and from the right intermediate point (33) to the upper edge (37). 13) and a point (38) on said right edge (16) equidistant towards said lower edge (14) and welded along a right diagonal line (40) to form a right weld line (41). is formed.

According to the mask of the embodiment configured in this way, the mask body (2) has left and right welding lines (37, 41), the welding line portion functions like a reinforcing rib when worn on the face. As a result, the unfolded mask 1 has a three-dimensional shape that is convex forward (in the direction away from the skin) as a whole, thereby not only securing a space around the mouth and nose, but also (15, 16) are in close contact with the skin (50) without forming a gap between the skin (50) and the edge of the mask body (2). Therefore, unlike conventional masks, there is no need to increase the size, and when wearing the mask, it does not feel stuffy or uncomfortable due to contact with the mouth and nose, and the invasion and spread of viruses that are the source of infection from the gap between the mask and the skin. definitely prevented.

The front view which shows the wearing state of the mask which concerns on embodiment of this invention. The side view which shows the wearing state of the mask shown in FIG. The top view which shows the state which folded the mask shown in FIG.1, 2 into two.

An embodiment of a mask according to the present invention will be described with reference to the accompanying drawings.

In the following explanation, the prefixes "top" and "bottom" are used to describe the parts that appear on the top and bottom of the mask, and the parts that appear on the left and right of the mask are used when the mask is worn on the face from the front (front). Use ``left'' and ``right'' prefixes in descriptions of places. In addition, the side that comes into contact with the skin when worn on the face is called the "back side", and the opposite side that does not come into contact with the skin is called the "front side".

[overall structure]
As shown in FIGS. 1-3, the mask 1 according to the embodiment generally has a mask body 2 and straps 3 for holding the mask body 2 on the face.

[mask body]
When viewed from the front, the mask body 2 has an upper edge 13 and a lower edge 14 that appear vertically and extend in the horizontal (left and right) direction, and an edge that appears vertically (up and down). A left edge 15 and a right edge 16 extending in the direction form the outer edge and outline. For example, the mask body 2 has a horizontal length of about 140 mm to about 180 mm and a vertical length of about 80 mm to 100 mm.

The mask body 2 is configured by stacking a plurality of nonwoven fabric sheets, for example. At least one nonwoven sheet of the plurality of nonwoven sheets includes heat-sealable fibers and is oriented in one or more straight or curved lines along top edge 13, bottom edge, left edge and right edge 16. A plurality of welding lines (seal lines) are formed by heating and welding continuously or intermittently along. In the embodiment, an upper weld line 21, a lower weld line 22, a left weld line 23 and a right weld line 24 are formed along the upper edge 13, lower edge, left edge and right edge 16 of the mask body 2, respectively.

In the mask body 2 of the embodiment, two upper welding lines 21 are formed along the upper edge 13. Between these two upper welding lines 21, a nose wire is formed between the nonwoven fabric sheets on the front side and the back side. 25 is accommodated, and is configured so that the upper edge 13 of the mask 1 can be fitted to the shape of the nose while the mask 1 is worn on the face.

In the mask body 2 of the embodiment, a plurality of pleats (folds) 26 extending in the left-right direction are formed so that the mask 1 can be expanded along the uneven shape of the face when the mask 1 is worn on the face. ing. Pleats 26 may be either so-called stepped pleats or omega pleats.

[string]
A string 3 for holding the mask 1 on the face has a left string 3 attached to the left side of the mask body 2 and a right string 28 attached to the right side of the mask body 2. - 特許庁It is preferable to use a stretchable rubber cord for the cord 3 .

In the embodiment, one end and the other end of the string 3 on the left side are heat-welded to the upper and lower corners on the left side of the mask body 2, respectively, and the one end and the other end of the string 28 on the right side are fixed. They are fixed by heat welding to the right upper edge corner and lower edge corner of the mask body. Therefore, as shown in FIGS. 1 and 2, in use, the left strap 3 is hung over the wearer's right ear and the right strap 28 is hung over the wearer's left ear.

As described above, in the embodiment, one string has one end and the other end fixed to the left upper end and the left lower end of the mask body 2 , and the other string has one end and the other end fixed to the right upper end and the right right end of the mask body 2 . One end and the other end of the string are fixed to the left upper end and the right upper end of the mask body, and the other string has one end and the other end fixed to the left lower end and the right lower end of the mask body. May be fixed. Alternatively, four strings may be prepared, one end of each string may be fixed to the four corners of the mask body, and each string may be tied to the corresponding string.

[Manufacturing]
At the time of manufacture, as shown in FIG. 3, the mask body 2 having the configuration described above is formed with pleats 26, and welding lines 21 to 24 are formed along the upper, lower, left, and right edges 13 to 16, respectively. It is folded in two (mountain fold) along a center line 31 extending in the left-right direction so that the surface that does not come into contact with the garment appears outside and the back surface that comes in contact with the skin when worn is hidden inside. Hereinafter, the center line 31 will be referred to as a "fold". A crease 31 connects a left midpoint 32 on the left edge 15 and a right midpoint 33 on the right edge 16 . In the embodiment, the left midpoint 32 on the left edge 15 is equidistant from the left edge of the top edge 13 and the left edge of the bottom edge, and the right midpoint 33 on the right edge 16 is equidistant from the right edge of the top edge 13 and the right edge of the bottom edge. equidistant from However, the left and right

intermediate points

32, 33 do not necessarily have to be equidistant from the upper edge 13 and the lower edge 14, and may be biased toward the upper edge or the lower edge.

Next, the mask body 2 folded in two is cut off at portions including the left and right ends of the folds 31 . Specifically, a point 34 on the fold line 31 and a predetermined distance d1 from the left end (left middle point 32) of the fold line 31 toward the right end (right middle point 33) of the fold line 31, and the left end of the fold line 31 ( A linear or band-like left weld line welded along a left oblique line 36 connecting the left midpoint 32) with a point 35 on the left edge 15 at an equal distance d2 toward the upper edge 13 and the lower edge 14; 37 is formed. Similarly, a point 38 located on the fold line 31 and separated from the right end (right intermediate point 33) of the fold line 31 toward the left end (left intermediate point 32) of the fold line 31 by a predetermined distance d1′ and the right end (right intermediate point 32) of the fold line 31 A straight or strip-like right weld line is welded along a right oblique line 40 connecting the midpoint 33) to a point 39 on the right edge 16 at an equal distance d2' toward the upper edge 13 and towards the lower edge 14. 41 is formed.

In an embodiment, along left weld line 37 a left corner triangular area (triangular area including left midpoint 32) 42 outside left weld line 37 is excised, and along right weld line 41 the right weld line is cut. A right corner triangular region 43 outside of 41 (a triangular region including the right midpoint 33) has been cut away.

In the embodiment, the distance d1 in the left triangular region 42 is greater than the distance d2. Similarly, the distance d1' in the right corner triangular region 43 is greater than the distance d2'. Also, the distances d1 and d2 in the left corner triangular region 42 are equal to the distances d1' and d2' in the right corner triangular region 43, respectively. For example, the distance d1 (=d1') is approximately 15 mm to 40 mm, and the distance d2 (=d2') is approximately 5 mm to 10 mm.

In the embodiment, the left and

right welding lines

37, 41 are straight lines, but they may be convex arch-shaped or concave arch-shaped curves toward the left and

right midpoints

32, 33.

In the above description, the left and right corner triangular regions 42 and 43 were cut after the mask body 2 was folded in half, but the portions corresponding to the left and right corner triangular regions were cut out from the mask body before being folded in half. After that, the left and right welding lines 41 may be formed after folding the mask body in two.

[use]
When the mask 1 of the embodiment manufactured in this manner is used, the folded mask body 2 is unfolded as shown in FIGS. At this time, since

oblique welding lines

37 and 41 are formed from the surface side in the left and right central portions, the unfolded mask 1 has a three-dimensional shape that is convex forward (in the direction away from the skin) as a whole. .

Therefore, when the unfolded mask 1 is worn, a sufficiently large space is formed between the mask body 2 and the skin 50, especially the lips. Thereby, discomfort when wearing the mask 1 is improved. Further, as shown in FIG. 2, the left and

right edges

15 and 16 of the mask body 2 are in close contact with the skin 50, so that no gap is formed between the skin 50 and the mask body 2. As shown in FIG. Furthermore, by deforming the nose wire 25 into the shape of the nose, the upper edge 13 of the mask body can be brought into close contact with the left and right skin portions of the nose. As a result, the four sides (upper edge 13 , lower edge 14 , left edge 15 and right edge 16 ) of the mask body 2 are in close contact with the skin 50 . Therefore, unlike a conventional mask, it is possible to reliably prevent the invasion and spread of the virus that is the source of infection through the gap between the mask and the skin.

In addition, in the mask 1 of the embodiment, as shown in FIG. 3, the left and right corner triangular regions 42 and 43 are cut off, so the attached mask 1 has a smooth external shape without projections.

In addition, before use (before deployment) and when not in use (when the mask is temporarily removed from the face and folded for eating, drinking, etc.), the back side that is scheduled to come into contact with the skin and the back side that has already come into contact with the skin , hidden inside and not exposed. Therefore, even if the mask folded in half is temporarily placed on a table or the like, the back surface, which is in contact with the skin or the nose and mouth, does not come into contact with the table or the like. Therefore, even if there are pathogens on the table or the like, the risk of the pathogens being sucked through the mask is prevented.

Furthermore, the mask folded in half before use (before deployment) is about half the size of the unfolded mask, so it is economical because the packaging material used for individual packaging is half. Yes, and it's portable.

1: Mask 2: Mask body 3: String 13: Upper edge 14: Lower edge 15: Left edge 16: Right edge 21: Upper weld line 22: Lower weld line 23: Left weld line 24: Right weld line 31: Center line (fold)
32: Left edge of crease (left middle point)
33: right edge of fold (right middle point)
37: Left weld line 41: Right weld line 42: Left corner triangular area 43: Right corner triangular area

Claims

(a) By the upper edge (13) and lower edge (14) extending in the horizontal direction of the face and the left edge (15) and right edge (16) extending in the vertical direction of the face when worn on the face a contoured mask body (2);
A string (3) whose ends are fixed at the left and right upper edge corners and the left and right lower edge corners where the upper edge (13) and the lower edge (14) and the left edge (15) and the right edge (16) intersect ) and a mask (1) comprising
(b) said mask body (2) is between said upper edge (13) and said lower edge (14), and has a left midpoint (32) on said left edge (15) and said right edge (16); It is folded in half along the center line (31) connecting the upper right middle point (33),
(c) the mask body (2) folded in half,
a point (34) on said center line (31) and moved from said left midpoint (32) toward said right midpoint (33) and from said left midpoint (32) to said upper edge (13); A left weld line (37) is formed by welding along a left diagonal line (36) connecting points (35) on said left edge (15) equidistant towards said lower edge (14). A point (37) on the center line (31) and moved from the right intermediate point (33) toward the left intermediate point (32) and from the right intermediate point (33) to the upper edge (37). 13) and a point (38) on said right edge (16) equidistant towards said lower edge (14) and welded along a right diagonal line (40) to form a right weld line (41). A mask (1) on which is formed.
a left corner triangular region (42) located outside said left weld line (37) and including said left midpoint (32) along said left weld line (37) is cut away;
2. A right corner triangular region (43) located along said right weld line (41) outside said right weld line (41) and including said right midpoint (33) is cut away. mask (1).
The mask according to claim 1 or 2, wherein the left weld line (37) and the right weld line (41) are each straight lines.
Said left welding line (37) is an arcuate line convex towards said left intermediate point (32) and said left welding line (41) is an arcuate line convex towards said right intermediate point (33). A mask according to claim 1 or 2.
Said left weld line (37) is an arcuate line concave towards said left midpoint (32) and said left weld line (41) is an arcuate line concave towards said right midpoint (33). A mask according to claim 1 or 2.