CN117835861A

CN117835861A - Mask

Info

Publication number: CN117835861A
Application number: CN202280052233.9A
Authority: CN
Inventors: 滨口慎治
Original assignee: Saraya Co Ltd
Current assignee: Saraya Co Ltd
Priority date: 2021-07-30
Filing date: 2022-07-26
Publication date: 2024-04-05
Also published as: WO2023008429A1; JP2023020251A

Abstract

The invention provides a mask capable of enabling left and right longitudinal edge parts of the mask to be closely attached to skin in a wearing state. A mask (1) is provided with: (a) A mask body (2) which is contoured by an upper edge (13) and a lower edge (14) extending in the left-right direction of the face and a left edge (15) and a right edge (16) extending in the up-down direction of the face when the mask is worn on the face; and a string (3) whose end parts are fixed at the upper and lower edges and the upper and lower left and right edge corners where the upper and lower edges intersect with the left and right edges, and (b) the mask body is positioned between the upper and lower edges, and is folded in half along a central line (31) connecting a left intermediate point (32) on the left edge and a right intermediate point (33) on the right edge. (c) In the mask body folded in half, a left welding line (37) is formed by welding a point (34) located on a central line and moving from a left middle point to a right middle point and a left oblique line (36) connected with a point (35) on a left edge which is separated from the left middle point by an equal distance toward an upper edge and a lower edge, and a right welding line (41) is formed by welding a point (38) located on the central line and moving from the right middle point to the left middle point and a right oblique line (40) connected with a point (39) on a right edge which is separated from the right middle point by an equal distance toward the upper edge and the lower edge.

Description

Mask

Technical Field

The invention relates to a mask.

Background

In order to prevent infectious diseases, it is important to attach the periphery of the mask to the face so that no gap is generated in the mask. Accordingly, in many nonwoven masks currently on the market, for example, by embedding nose threads along the upper edge of the mask, the nose threads are deformed along the shape of the nose during wearing, and thus there is an effort to prevent gaps from being formed between the mask and the skin at the right and left sides of the nose and under the right and left eyes. However, when the left and right longitudinal edges of the mask are observed, for example, in a state where the ear-hanging string is hung on the ear, forces in the up-down direction that bring them close to each other act on the upper and lower longitudinal ends of the mask, so that the middle portion of the longitudinal edge floats from the face, and a gap is likely to occur therein. Therefore, in order to make the left and right longitudinal edges of the mask adhere to the skin to eliminate the gap when worn, patent document 1 proposes forming a bending guide portion (for example, a substantially V-shaped slit tapering from the longitudinal edge toward the inside in one embodiment) at a substantially middle portion of the left and right longitudinal edges.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 6499032

Disclosure of Invention

Problems to be solved by the invention

The present invention aims to provide a novel mask which is structured differently from the invention proposed in patent document 1, and which prevents a gap from being formed between the mask and the skin by bringing the left and right longitudinal edges of the mask into close contact with the skin during wearing, in particular.

Means for solving the problems

In order to achieve the object, an embodiment of the mask of the present invention is as follows, (a) includes: a mask body (2) which is contoured by an upper edge (13) and a lower edge (14) extending in the left-right direction of the face and a left edge (15) and a right edge (16) extending in the up-down direction of the face when the mask is worn on the face; and a rope (3) whose ends are fixed at upper and lower left edge corners and lower left and right edge corners where the upper and lower edges (13, 14) intersect the left and right edges (15, 16),

(b) The mask body (2) is positioned between the upper edge (13) and the lower edge (14) and is folded in half along a central line (31) connecting a left middle point (32) on the left edge (15) and a right middle point (33) on the right edge (16),

(c) In the mask body (2) folded in half, a left welding line (37) is formed by welding a left oblique line (36) connected to a point (34) located on the center line (31) and moving from the left intermediate point (32) toward the right intermediate point (33) and a point (35) located on the left edge (15) and separated from the left intermediate point (32) toward the upper edge (13) and the lower edge (14) by an equal distance, and a right welding line (41) is formed by welding a right oblique line (40) connected to a point (38) located on the center line (31) and moving from the right intermediate point (33) toward the left intermediate point (32) and moving from the right intermediate point (33) toward the right edge (16) and separated from the upper edge (13) and the lower edge (14) by an equal distance.

Effects of the invention

According to the mask of the embodiment configured in this way, the mask body (2) has left and right welding lines (37, 41) near the left and right edges (15, 16) folded in half along the central line (31), so that the welding lines function as reinforcing ribs when the mask is worn on the face. Thus, the whole of the mask 1 after being unfolded is formed into a three-dimensional shape protruding forward (in a direction away from the skin), so that not only the space around the mouth and nose can be ensured, but also the left and right edges (15, 16) of the mask body (2) can be brought into close contact with the skin (50), and no gap is formed between the skin (50) and the edge of the mask body (2). Therefore, the size of the mask is not increased as in the conventional mask, and the mask is reliably prevented from being stuffy and uncomfortable when being worn in contact with the mouth and nose, and viruses which are the infectious agents are prevented from entering and diffusing from the gap between the mask and the skin.

Drawings

Fig. 1 is a front view showing a state of wearing a mask according to an embodiment of the present invention.

Fig. 2 is a side view showing a state of wearing the mask shown in fig. 1.

Fig. 3 is a plan view showing a state in which the mask shown in fig. 1 and 2 is folded in half.

Detailed Description

Embodiments of the mask according to the present invention will be described with reference to the accompanying drawings.

In the following description, in a state in which a mask to be worn on a face is viewed from the front (front), the "upper" and "lower" prefixes are used for the description of the positions appearing above and below the mask, and the "left" and "right" prefixes are used for the description of the positions appearing right and left of the mask. In addition, in a state of being worn on the face, a face that contacts the skin is referred to as a "back face", and a face that does not contact the facial skin and is on the opposite side is referred to as a "front face".

[ integral Structure ]

As shown in fig. 1 to 3, a mask 1 according to an embodiment generally includes a mask body 2 and a string 3 for holding the mask body 2 on the face.

[ mask body ]

The mask body 2 has an outer edge and a contour formed by an upper edge 13 and a lower edge 14 which are vertically present and extend in a lateral (left-right) direction and a left edge 15 and a right edge 16 which are horizontally present and extend in a longitudinal (up-down) direction when seen from the front and when worn on the face. For example, the mask body 2 has a transverse length of about 140mm to about 180mm and a longitudinal length of about 80mm to 100mm.

The mask body 2 is formed by, for example, overlapping a plurality of nonwoven fabric sheets. At least one of the nonwoven fabric sheets contains heat-sealable fibers, and a plurality of weld lines (seal lines) are formed by continuous or intermittent heat welding along one or more straight lines or curved lines along the upper edge 13, the lower edge, the left edge, and the right edge 16. In the embodiment, upper welding line 21, lower welding line 22, left welding line 23, and right welding line 24 are formed along upper edge 13, lower edge, left edge, and right edge 16 of mask body 2, respectively.

In the mask body 2 of the embodiment, two upper welding lines 21 are formed along the upper edge 13, and a nose line 25 is accommodated between the nonwoven fabric sheets on the front surface side and the back surface side between the two upper welding lines 21, so that the upper edge 13 of the mask 1 can be bonded to the shape of the nose in a state where the mask 1 is worn on the face.

In the mask body 2 of the embodiment, a plurality of pleats 26 extending in the left-right direction are formed so that the mask 1 can be stretched along the concave-convex shape of the face in a state where the mask 1 is worn on the face. The crimp 26 may be a so-called step crimp or an omega crimp.

[ rope ]

The 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. The cord 3 is preferably a rubber cord that can be stretched and contracted.

In the embodiment, one end and the other end of the left string 3 are heat welded and fixed to the left upper edge corner and the left lower edge corner of the mask body 2, respectively, and one end and the other end of the right string 28 are heat welded and fixed to the right upper edge corner and the right lower edge corner of the mask body, respectively. Thus, as shown in fig. 1 and 2, in the use state, the left string 3 is hung on the right ear of the wearer, and the right string 28 is hung on the left ear of the wearer.

As described above, in the embodiment, one of the two ends of the string is fixed to the left upper end and the left lower end of the mask body 2 at one end and the other end, and the other of the two ends of the string is fixed to the right upper end and the right lower end of the mask body 2 at the other end, but one end and the other end of the string may be fixed to the left upper end and the right upper end of the mask body, and the other end of the string may be fixed to the left lower end and the right lower end of the mask body at the other end. Alternatively, 4 strings may be prepared, one end of each string may be fixed to four corners of the mask body, and each string may be connected to the corresponding string.

[ manufacturing ]

In the manufacturing process, as shown in fig. 3, the mask body 2 having the above-described structure is formed with the folds 26, and after the welding lines 21 to 24 are formed along the upper, lower, left and right edges 13 to 16, respectively, the mask body is folded (folded convexly) along the center line 31 extending in the lateral direction so that the surface which does not contact the skin when worn is exposed to the outside and the back surface which contacts the skin when worn is hidden to the inside. Hereinafter, the center line 31 is referred to as a "crease". Crease 31 joins left intermediate point 32 on left edge 15 and right intermediate point 33 on right edge 16. In an embodiment, the left intermediate point 32 on the left edge 15 is equidistant from the left end of the upper edge 13 and from the left end of the lower edge, and the right intermediate point 33 on the right edge 16 is equidistant from the right end of the upper edge 13 and from the right end of the lower edge. However, the left and right intermediate points 32, 33 need not necessarily be equidistant from the upper edge 13 and the lower edge 14, and may be offset toward the upper edge or the lower edge.

Next, the portions of the mask body 2 folded in half including the left and right ends of the fold 31 are cut away. Specifically, a linear or band-shaped left welding line 37 is formed by welding a left oblique line 36 that is positioned on the fold 31 and that is connected to a point 35 on the left edge 15 that is positioned at the left end (left intermediate point 32) of the fold 31 and that is separated from the left end (left intermediate point 32) of the fold 31 by a predetermined distance d1 toward the right end (right intermediate point 33) of the fold 31 by an equal distance d2 toward the upper edge 13 and the lower edge 14. Similarly, a right welding line 41 in the form of a line or a strip is welded along a right oblique line 40 that is positioned on the fold 31 and is connected to a point 39 on the right edge 16 that is positioned on the right end (right intermediate point 33) of the fold 31 and is separated from the right end (right intermediate point 33) of the fold 31 by a predetermined distance d1 'toward the left end (left intermediate point 32) of the fold 31 by an equal distance d2' toward the upper edge 13 and the lower edge 14.

In the embodiment, a left corner triangular region (triangular region including the left intermediate point 32) 42 on the outer side of the left welding line 37 is cut off along the left welding line 37, and a right corner triangular region (triangular region including the right intermediate point 33) 43 on the outer side of the right welding line 41 is cut off along the right welding line 41.

In an embodiment, the distance d1 is greater than the distance d2 in the left corner triangle area 42. Likewise, the distance d1 'in the right-corner triangular region 43 is greater than the distance d 2'. In addition, the distance d1 and the distance d2 in the left-corner triangular region 42 are equal to the distance d1 'and the distance d2' in the right-corner triangular region 43, respectively. For example, the distance d1 (=d1 ') is about 15mm to 40mm, and the distance d2 (=d2') is about 5mm to 10mm.

In the embodiment, the left and right welding lines 37 and 41 are straight lines, but may be curved in an arch shape protruding toward the left and right intermediate points 32 and 33 or in a concave arch shape.

In the above description, the left and right corner triangular regions 42 and 43 are cut out after the mask body 2 is folded in half, but the mask body before being folded in half may be cut out from the positions corresponding to the left and right corner triangular regions, and then the mask body may be folded in half to form the left and right welding lines 41.

[ use ]

The mask 1 of the embodiment thus manufactured is configured such that the mask body 2 folded in half is unfolded as shown in fig. 1 and 2 when in use. At this time, since welding lines 37 and 41 inclined from the front surface side are formed in the left and right central portions, the mask 1 after being spread has a three-dimensional shape protruding toward the front (in the direction away from the skin) as a whole.

Therefore, when the mask 1 is worn, a sufficient space is formed between the mask body 2 and the skin 50, particularly the lips. This improves the uncomfortable feeling when wearing the mask 1. 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, and no gap is formed between the skin 50 and the mask body 2. Further, by deforming the nose line 25 into the shape of the nose, the mask body upper edge 13 can be brought into close contact with the left and right skin portions of the nose. Thus, 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, as in the conventional mask, invasion and diffusion of viruses that are infectious agents from the gap between the mask and the skin can be reliably prevented.

In the mask 1 according to the embodiment, as shown in fig. 3, the right and left corner triangular regions 42 and 43 are cut away, so that the mask 1 to be worn has a smooth outer shape without protrusions.

The back surface intended to be in contact with the skin and the back surface already in contact with the skin are hidden inside and are not exposed before use (before expansion) and when not in use (in a state where the mask is temporarily removed from the face for eating or the like and folded). Therefore, even if the mask folded in half is temporarily placed on a desk or the like, the back surface that contacts the skin and the nose and mouth does not contact the desk or the like. Therefore, even if there are pathogenic bacteria on a table or the like, the risk of the pathogenic bacteria being inhaled through the mask can be prevented.

In addition, the mask folded in half before use (before expansion) is about half the size of the expanded mask, so that the packaging material used for packaging alone is half, which is economical and convenient to carry.

Description of the reference numerals

1: mask

2: mask main body

3: rope

13: upper edge

14: lower edge

15: left edge

16: right edge

21: upper welding line

22: lower welding line

23: left welding line

24: right welding line

31: central line (crease)

32: left end of crease (left middle point)

33: right end of crease (Right middle point)

37: left welding line

41: right welding line

42: left corner triangle area

43: right corner triangle area.

Claims

1. A mask (1) (a) is provided with:

a mask body (2) which is contoured by an upper edge (13) and a lower edge (14) extending in the left-right direction of the face and a left edge (15) and a right edge (16) extending in the up-down direction of the face when worn on the face; and

a rope (3) whose ends are fixed at upper and lower left edge corners where the upper and lower edges (13, 14) intersect the left and right edges (15, 16),

wherein,

2. Mask (1) according to claim 1, wherein,

a left corner triangular region (42) located outside the left welding line (37) and including the left intermediate point (32) is cut off along the left welding line (37),

a right corner triangular region (43) located outside the right welding line (41) and including the right intermediate point (33) is cut along the right welding line (41).

3. The mask according to claim 1 or 2, wherein,

the left welding line (37) and the right welding line (41) are straight lines respectively.

4. The mask according to claim 1 or 2, wherein,

the left welding line (37) is an arch line protruding toward the left intermediate point (32), and the left welding line (41) is an arch line protruding toward the right intermediate point (33).

5. The mask according to claim 1 or 2, wherein,

the left welding line (37) is an arch line recessed toward the left intermediate point (32), and the left welding line (41) is an arch line recessed toward the right intermediate point (33).