CN214962788U

CN214962788U - Plane mask

Info

Publication number: CN214962788U
Application number: CN202120820526.XU
Authority: CN
Inventors: 林颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-03
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a plane gauze mask, include: the mask comprises a mask body, ear hanging parts arranged on two sides of the mask body and a plastic nose clip arranged on the upper part of the mask body; the mask body is folded along the width direction to form a plurality of layers of folded parts, and the plurality of layers of folded parts extend to two ends along the length direction of the mask body; the folding part is sequentially provided with a plurality of folding layers along the width direction, and a folding line is respectively formed among the folding layers; welding areas are arranged at two side ends of the mask body, and each welding area comprises a bridge-shaped welding area arranged at two side ends of the mask body along the width direction and a folding layer welding area attached to the bridge-shaped welding area; the bridge-shaped welding area and the folding layer welding area enable each folding layer to be propped open towards the upper side and the lower side of the mask body by taking the intersection point of the bridge-shaped welding area and the folding line as a supporting original point. This application can increase the limited space of breathing zone, increases and the face laminating degree of tightness, wears more comfortablely, elegant appearance, and the protecting effect is good, and the practicality is good, and application scope is wide.

Description

Plane mask

Technical Field

The utility model relates to a health protection articles for use technical field, in particular to plane gauze mask.

Background

With the improvement of protection consciousness of people and the spread of air pollution and respiratory infectious diseases, the mask becomes an indispensable sanitary protective article in daily life of people, and the flat mask is widely used due to low price. Plane gauze mask adopts soft PP material, generally is the fabric preparation such as with two layers above non-woven fabrics, and plane gauze mask has a plurality of Z type fold portions, and the gauze mask is propped open the back, and Z type fold portion is as the holding power of gauze mask top facing, pulls open back Z type fold portion cavity structure with gauze mask to the upper and lower direction of face when wearing to can cladding user's two regions of mouth and nose, make the air that the user breathed through the filtration of gauze mask, and reach the safeguard effect.

The applicant finds that the existing plane mask has the following defects in the using process: as shown in fig. 1, after the mask is unfolded by the Z-shaped pleats in use, the black mark points are the supporting original points when the Z-shaped pleat portions are unfolded, and as the welding end parts with certain widths are arranged between the black mark points and the edges in the length direction, the breathing zone space formed by the mask and the face is small, and the inner surface of the mask is tightly attached to the face after the mask is worn; in addition, gaps with different sizes exist between the two side ends and one of the long side edges and the cheek and the lower jaw of a user respectively, the nose and the mouth of the user can be shielded only by the mouth and the nose parts corresponding to the inner side of the mask, and the sealing effect of the mask is poor after the mask is worn. In order to overcome the defects, the applicant proposes a plane mask, and through the improved design of the welding end parts of the two side ends of the mask body, the fold parts and the ear hanging part welding end parts, the two side ends of the mask body are provided with welding areas, and the welding areas are arranged in bridge-shaped welding areas and/or triangular welding areas of the two side ends. Make Z type fold portion prop when strutting and support between the original point length direction edge distance and reduce, as shown in fig. 2, Z type fold portion struts the gauze mask back during the use, when the triangle welded area that the welded area adopted same slope mode district, with the black mark point that is close to the edge for supporting the original point, struts along arrow direction Z type fold portion in proper order, and the breathing zone that gauze mask and face formed also becomes bigger, breathes more easily. However, the applicant found that, in the production and use process, the distance between the edges in the length direction of the support origin is reduced when the Z-shaped folding part is unfolded, and then the unfolding space can be enlarged, but the unfolding space can be further optimized.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a plane gauze mask, can further make the increase of breathing zone space on keeping the original size basis of gauze mask, wear more comfortablely, elegant appearance, the protecting effect is good, and the practicality is good, and application scope is wide.

In order to solve the technical problem, the technical scheme of the utility model as follows:

a flat mask comprising: the mask comprises a mask body, ear hanging parts arranged on two sides of the mask body and a plastic nose clip arranged on the upper part of the mask body; the mask body is folded along the width direction to form a plurality of layers of folded parts, and the plurality of layers of folded parts extend to two ends along the length direction of the mask body; the folding part is sequentially provided with a plurality of folding layers along the width direction, and a folding line is respectively formed among the folding layers; welding zones are arranged at two side ends of the mask body, and each welding zone comprises a bridge-shaped welding zone arranged at two side ends of the mask body along the width direction and a folding layer welding zone attached to the bridge-shaped welding zone; the bridge-shaped welding area and the folding layer welding area enable each folding layer to be unfolded towards the upper side and the lower side of the mask body by taking the intersection point of the bridge-shaped welding area and the folding line as a supporting original point.

Furthermore, the bridge-shaped welding areas are formed by arranging at least one welding line at two side ends of the mask body along the width direction, the folding layer welding areas are isosceles triangle welding areas, and the bottom edges of the isosceles triangle welding areas are superposed with the welding lines; the welding line and the isosceles triangle welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent isosceles triangle welding area is horizontally symmetrically arranged relative to the fold line.

Furthermore, the bridge-shaped welding areas are formed by arranging at least one welding line at two side ends of the mask body along the width direction, the folding layer welding areas are arc welding areas, and connecting lines of two end points of the arc welding areas are superposed with the welding lines; the welding line and the arc welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent arc welding areas are horizontally symmetrically arranged relative to the fold line.

Further, the bridge-shaped welding area is set to be a sawtooth edge portion, the sawtooth edge portion is attached to the folding layer welding area, the sawtooth edge portion is matched with the folding layer welding area in shape, the sawtooth edge portion and the folding layer welding area enable each folding layer, the bottom of the sawtooth edge portion and intersection points of the fold lines are used as supporting original points, and the upper side and the lower side of the mask body are propped open.

Preferably, the folding layer welding area is an isosceles triangle welding area, the sawtooth edge portion is a triangular sawtooth edge portion, and the waist of the isosceles triangle welding area coincides with one of the tooth shapes of the triangular sawtooth edge portion; the triangular sawtooth edge part and the isosceles triangle welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the isosceles triangle welding area is horizontally symmetrically arranged relative to the fold line.

Preferably, the folding layer welding zone is an arc welding zone, the sawtooth edge part is an arc sawtooth edge part, and an arc area of the arc welding zone coincides with one tooth form of the arc sawtooth edge part; the arc sawtooth edge part and the arc welding zone are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent arc welding zone is horizontally symmetrically arranged relative to the fold line.

Preferably, the welding line is formed by arranging a plurality of rectangular welding points or circular welding points, and the plurality of rectangular welding points or the plurality of circular welding points are uniformly arranged; the contour of the isosceles triangle welding area or the arc welding area is formed by continuous welding lines or formed by arranging a plurality of rectangular welding points or circular welding points.

Preferably, the folding layer welding area is not limited to the isosceles triangle welding area and the arc welding area, but may be an isosceles trapezoid welding area, and the like, and the folding layer welding area is intended to enable the folding layer of the folded part to be fixed at both ends of the mask body in the length direction, and to enable the folding layer to be maximally spread towards the upper and lower sides of the mask body.

Further, ear-hang portion sets up the both sides of gauze mask body, ear-hang portion is ear-hang area or ear-hang rope, the ear-hang area is the bar area body, the ear-hang area is two, two ear-hang area symmetry sets up, the ear-hang area includes two links, two the link respectively with the gauze mask body is fixed through the fixed weld zone butt fusion that sets up, the ear-hang area is the skin-friendly material preparation that has elasticity.

Furthermore, the upper side end and the lower side end of the mask body are respectively provided with a horizontal welding area distributed along the length direction, and the plastic nose clip is fixed on the upper part of the mask body through a group of horizontal welding areas parallel to each other.

Further, one side arc portion is formed on each of two sides of the mask body, and the bridge-shaped welding area is arranged along the arc edge of the side arc portion.

Further, one side arc portion is formed on each of two sides of the mask body, and the sawtooth edge portion is arranged along the arc edge of the side arc portion.

Preferably, the radian of the side arc part is R120-R150mm, and particularly can be R138 mm.

The beneficial effects of the utility model reside in that:

the utility model discloses a plane gauze mask, through setting up bridge shape weld zone and folding weld zone, the horizontal width in bridge shape weld zone reduces and sets up folding weld zone at each folded layer simultaneously and carry out the butt fusion fixed for each folded layer can use the nodical original point of support to of bridge shape weld zone and fold line both sides strut about the gauze mask body. The breathing area formed by the mask and the face is also larger, the breathing is easier, cosmetics are not easy to stick on the inner surface of the mask, the four-corner fixing and welding area is not tilted, the supporting original points are on the same bending line, and the two side ends of the mask body are tightly attached to the face of a user in a sealing way; in addition, through set up side arc portion and/or sawtooth edge portion in gauze mask body both sides, greatly increased gauze mask body both sides and people's face laminating degree to reach better leakproofness and better travelling comfort, can avoid the germ to be inhaled by the user, use safer and more have the aesthetic feeling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a conventional flat mask;

FIG. 2 is a schematic view of a flat mask structure previously proposed by the applicant;

FIG. 3 is a schematic view of a flat mask according to an embodiment of the present invention;

fig. 4 is a second schematic structural view of the planar mask of the present invention:

fig. 5 is a third schematic structural view of the flat mask of the present invention;

FIG. 6 is a fourth schematic view of the flat mask of the present invention;

FIG. 7 is a fifth view of the flat mask according to the present invention;

fig. 8 is a sixth schematic view of the flat mask according to the present invention;

fig. 9 is a seventh schematic view of the flat mask of the present invention;

fig. 10 is an eighth schematic view of the flat mask according to the present invention;

fig. 11 is a ninth view illustrating a structure of a flat mask according to an embodiment of the present invention;

fig. 12 is a tenth view schematically illustrating the structure of the flat mask of the present invention;

FIG. 13 is an eleventh schematic view of the flat mask of the present invention;

fig. 14 is a twelfth schematic view of the flat mask according to the present invention;

in the figure, 1-a mask body, 2-an ear-hanging part, 3-a plastic nose clip, 4-a welding part, 41-a bridge-shaped welding area, 42-an isosceles triangle welding area, 43-an arc welding area, 44-a fixed welding area and 45-a horizontal welding area; 5-fold, 51-first fold line, 52-second fold line, 53-third fold line, 6-side arc, 7-serrated edge.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 3 and 4, an embodiment of the present invention provides a flat mask, including: the mask comprises a mask body 1, ear hanging parts 2 arranged on two sides of the mask body 1 and a plastic nose clip 3 arranged on the upper part of the mask body 1; the mask body 1 is folded along the width direction to form a plurality of layers of folded parts 5, and the plurality of layers of folded parts 5 extend to two ends along the length direction of the mask body 1; the folding part 5 is sequentially provided with a plurality of folding layers along the width direction, and a folding line is respectively formed among the folding layers; welding areas 4 are arranged at two side ends of the mask body 1, and each welding area 4 comprises a bridge-shaped welding area 41 arranged at two side ends of the mask body 1 along the width direction and a folding layer welding area attached to the bridge-shaped welding area 41; the bridge-shaped welding areas 41 and the folding layer welding areas enable each folding layer to be unfolded towards the upper side and the lower side of the mask body 1 by taking the intersection point of the bridge-shaped welding areas and the folding lines as a supporting original point. This bridge shape fused zone 41 has played the banding effect of gauze mask body 1, but fold portion 5 is a plurality of folded sheets, when bridge shape fused zone 41 is only one row or two rows of weld lines, be not enough in making a plurality of folded sheet edge butt fusion of fold portion 5 fixed, as shown in fig. 1, current plane gauze mask generally is with the direct multirow setting of bridge shape fused zone, thereby form the rectangle fused zone at the both ends of folded sheet and make the folded sheet use the crossing point of rectangle fused zone and fold line to strut as supporting the initial point to both sides about the gauze mask body, it is little to strut the scope, in this embodiment, adopt folded sheet fused zone and the cooperation of bridge shape fused zone, make each folded sheet use the crossing point of bridge shape fused zone and fold line to strut as supporting the initial point to both sides about the gauze mask body, it is bigger to strut the scope, the breathing zone that gauze mask and face formed also becomes bigger, breathe more easily. As shown in fig. 3, the bridge-shaped welding areas 41 are formed by providing at least one welding line along the width direction at both side ends of the mask body 1, the folding layer welding areas are isosceles triangle welding areas 42, and the bottom sides of the isosceles triangle welding areas 42 coincide with the welding lines; the welding line and the isosceles triangle welding area 42 are symmetrically arranged relative to the longitudinal central axis of the mask body 1, and the adjacent isosceles triangle welding area 42 is horizontally symmetrically arranged relative to the fold line. The isosceles triangle welding area 42 is preferably an isosceles direct triangle welding area, the intersection point between the welding line and the fold line is a support origin, black mark points are marked in the figure, the folding layer stretching direction is an arrow, the arrow stretches along one of the waist edges of the isosceles triangle welding area symmetrical to the two sides of the fold line, namely stretches along the upper side and the lower side of the mask body, compared with the scheme shown in fig. 2, the stretching range is larger, and the scheme shown in fig. 2 can only stretch along the bottom edge of the triangle.

As shown in fig. 4, the bridge-shaped welded regions 41 are formed by providing at least one welding line along the width direction at both ends of the mask body 1, the folded layer welded regions are arc welded regions 43, and the connecting lines of the two end points of the arc welded regions 43 coincide with the welding lines; the welding line and the arc welding zone 43 are symmetrically arranged relative to the longitudinal central axis of the mask body 1, and the adjacent arc welding zone 43 is horizontally symmetrically arranged relative to the fold line. The arc-shaped welding area 43 is preferably a semicircular welding area, the intersection point between the welding line and the fold line is a support origin, black mark points are marked in the figure, the unfolding direction of the folding layer is an arrow, the arrow is unfolded along a tangent line between the arc-shaped and the support origin which are symmetrical on two sides of the fold line, namely, the upper side and the lower side of the mask body are unfolded, compared with the scheme shown in fig. 2, the unfolding range is larger, and the scheme shown in fig. 2 can only be unfolded along the bottom edge of a triangle.

Specifically, in this embodiment, the plastic nose clip 3 is a flat strip with soft filaments disposed therein.

Specifically, in this embodiment, the mask body 1 includes a top end, a bottom end and two side ends, and the two side ends are a left side end and a right side end.

Preferably, the welding line is formed by arranging a plurality of rectangular welding points or circular welding points, and the plurality of rectangular welding points or the plurality of circular welding points are uniformly arranged; the contour of the isosceles triangle welding zone 42 or the arc welding zone 43 is formed by continuous welding lines, or is formed by arranging a plurality of rectangular welding points or circular welding points.

Specifically, as shown in fig. 7 and 8, the bridge-shaped welding areas 41 are formed by arranging a plurality of uniformly distributed rectangular welding points, the outlines of the isosceles triangle welding areas 42 and the arc welding areas 43 are formed by continuous welding lines, and because the two side edges of the mask body 1 are extruded and stressed to be bent as supports when the folded part 5 is unfolded, the bridge-shaped welding areas 41 are formed by arranging the rectangular welding points, so that the bridge-shaped welding areas 41 have better flexible bending performance, and the influence on the firmness of the mask caused by breakage is avoided.

Specifically, as shown in fig. 13 and 14, the bridge-shaped welding area 41, the isosceles triangle welding area 42, and the arc welding area 43 are all formed by arranging a plurality of uniformly distributed rectangular welding points, and in all embodiments of the present application, all the welding areas can be formed by uniformly arranging rectangular welding points, so that the planar mask keeps good flexible fit to the human face while ensuring the firmness.

As shown in 9 and 10, the bridge-shaped welding zone 41 is set as a sawtooth edge portion 7, the sawtooth edge portion 7 is attached to the folding layer welding zone, the sawtooth edge portion 7 is matched with the folding layer welding zone in shape, and the sawtooth edge portion 7 and the folding layer welding zone make each folding layer use the bottom of the sawtooth edge portion and the intersection point of the fold lines are opened towards the upper side and the lower side of the mask body 1 as the supporting origin. Replace the structure of bridge shape welded zone 41 through sawtooth edge portion 7 for when fold portion 5 was strutted, the profile of tooth in the sawtooth edge portion 7 can extrude the shrink, thereby avoids forming the uplift in gauze mask body 1 both sides, makes gauze mask body 1 poor with the both sides edge leakproofness of people's face, thereby has influenced gauze mask protective effect.

Preferably, the folding layer welding area is an isosceles triangle welding area 42, the sawtooth edge portion 7 is a triangular sawtooth edge portion, and the waist of the isosceles triangle welding area 42 coincides with one tooth form of the triangular sawtooth edge portion; the triangular sawtooth edge part and the isosceles triangle welding area 42 are symmetrically arranged relative to the longitudinal central axis of the mask body 1, and the isosceles triangle welding area 42 is horizontally symmetrically arranged relative to the fold line.

Preferably, the folding layer welding zone is an arc welding zone 43, the sawtooth edge portion 7 is an arc sawtooth edge portion, and an arc area of the arc welding zone 43 coincides with one tooth form of the arc sawtooth edge portion; the arc sawtooth edge part and the arc welding zone 43 are symmetrically arranged relative to the longitudinal central axis of the mask body 1, and the adjacent arc welding zone 43 is horizontally symmetrically arranged relative to the fold line.

Specifically, in this embodiment, ear-hang portion 2 sets up the both sides of gauze mask body 1, ear-hang portion 2 is ear-hang area or ear-hang rope, the ear-hang area is the bar area body, the ear-hang area is two, two ear-hang area symmetry sets up, the ear-hang area includes two links, two the link respectively with the gauze mask body is fixed through the fixed splice zone 44 butt fusion that sets up, the ear-hang area is the skin-friendly material preparation that has elasticity.

Specifically, in this embodiment, the ear strap is made of elastic cloth, and two connecting ends of the ear strap are respectively flush with the top end or the bottom end of the mask body.

Specifically, in this embodiment, the ear hanging rope is the flexible rope of elasticity, and two link settings of ear hanging rope are in the outside of gauze mask body, and two link settings are fixed with the fixed weld zone 44 butt fusion of gauze mask body.

Specifically, in this embodiment, the upper end and the lower end of the mask body 1 are respectively provided with horizontal welding zones 45 distributed along the length direction, and the plastic nose clip 3 is clamped and fixed on the upper portion of the mask body 1 through a set of parallel horizontal welding zones 45.

Preferably, the four corner positions of the mask body 1 are respectively provided with the fixed welding zones 44, the fixed welding zones 44 are connected with the bridge-shaped welding zones 41 in the width direction of the mask body 1, and the fixed welding zones 44 are connected with the horizontal welding zones 45 in the length direction of the mask body 1. Optionally, an arc weld line is formed on the opposite inner side of the fixed weld zone 44 to make the folded layer more conformable to the human face when unfolded.

Preferably, the outlines of the fixed welding zone 44 and the horizontal welding zone 45 are composed of continuous welding lines, or are composed of a plurality of rectangular welding points or circular welding points in an arrangement manner; and a plurality of rectangular welding points or circular welding points are arranged in the outlines of the fixed welding zone 44 and the horizontal welding zone 45.

As shown in fig. 5 and 6, two sides of the mask body 1 are respectively formed with a side arc portion 6, and the bridge-shaped welding region 41 is disposed along an arc edge of the side arc portion 6.

As shown in fig. 11 and 12, a side arc portion 6 is formed on each of both sides of the mask body 1, and the serrated edge portion 7 is disposed along an arc edge of the side arc portion 6.

Preferably, gauze mask body 1 is the lamina body that multilayer structure constitutes, the gauze mask body includes inlayer, intermediate level, skin, the width of inlayer is greater than intermediate level or outer width, the upper end and the lower extreme of inlayer are folding cladding outward on the skin, inlayer, intermediate level, outer upper end, lower extreme pass through horizontal weld zone 45 butt fusion fixed.

Optionally, the side arc portion 6 is formed by directly punching and forming the mask body 1, and then, the side arc portion 6 also includes an inner layer, an intermediate layer, and an outer layer.

Preferably, the multilayer fold portion 5 includes three fold portions, three fold portions are including the first fold layer, the second fold layer, the third fold layer that set gradually, first fold layer, the second fold layer, the third fold layer are respectively including setting up first fold line, second fold line, the third fold line of surface, first fold line 51, second fold line 52, third fold line 53 respectively with top or bottom are parallel, first fold line 51, third fold line 53 are located second fold line 52 both sides, first fold line 51 extremely the distance on gauze mask body 1 top with third fold line 53 the distance of gauze mask body bottom equals.

Specifically, in this embodiment, on the outer surface of the mask body 1, the distance from the first fold line 51 to the top end of the mask body 1 and the distance from the third fold line 53 to the bottom end of the mask body 1 are 25 mm.

In a preferred embodiment of the present invention, the intermediate layer is a filter layer, and the intermediate layer is made of at least one layer of melt-blown cloth, and/or activated carbon material, and/or low-resistance absorbent cotton layer, and/or nano-antibacterial non-woven material.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "row", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for the convenience of describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present patent application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," "secured," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present patent application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Claims

1. A flat mask, comprising: the mask comprises a mask body, ear hanging parts arranged on two sides of the mask body and a plastic nose clip arranged on the upper part of the mask body; the mask body is folded along the width direction to form a plurality of layers of folded parts, and the plurality of layers of folded parts extend to two ends along the length direction of the mask body; the folding part is sequentially provided with a plurality of folding layers along the width direction, and a folding line is respectively formed among the folding layers; welding zones are arranged at two side ends of the mask body, and each welding zone comprises a bridge-shaped welding zone arranged at two side ends of the mask body along the width direction and a folding layer welding zone attached to the bridge-shaped welding zone; the bridge-shaped welding area and the folding layer welding area enable each folding layer to be unfolded towards the upper side and the lower side of the mask body by taking the intersection point of the bridge-shaped welding area and the folding line as a supporting original point.

2. The flat mask according to claim 1, wherein said bridge-shaped welding areas are formed by at least one welding line along the width direction at both side ends of said mask body, said folding layer welding areas are isosceles triangle welding areas, and the bottom side of said isosceles triangle welding areas coincides with said welding line; the welding line and the isosceles triangle welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent isosceles triangle welding area is horizontally symmetrically arranged relative to the fold line.

3. The mask according to claim 2, wherein said bridge-shaped welded regions are formed by at least one welding line along the width direction at the two ends of said mask body, said folded layer welded regions are arc welded regions, and the connecting line of the two ends of said arc welded regions coincides with said welding line; the welding line and the arc welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent arc welding areas are horizontally symmetrically arranged relative to the fold line.

4. The flat mask according to claim 1, wherein the bridge-shaped welding zone is configured as a sawtooth edge portion, the sawtooth edge portion is configured to be attached to the folding layer welding zone, the sawtooth edge portion is configured to match with the folding layer welding zone in shape, and the sawtooth edge portion and the folding layer welding zone are configured to enable each folding layer to be unfolded towards the upper side and the lower side of the mask body by using an intersection point of the bottom of the sawtooth edge portion and the fold line as a support origin.

5. The flat mask according to claim 4, wherein the folding layer welding area is an isosceles triangle welding area, the sawtooth edge portion is a triangular sawtooth edge portion, and the waist of the isosceles triangle welding area coincides with one of the tooth shapes of the triangular sawtooth edge portion; the triangular sawtooth edge part and the isosceles triangle welding area are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent isosceles triangle welding areas are horizontally symmetrically arranged relative to the fold line;

or the folding layer welding area is an arc welding area, the sawtooth edge part is an arc sawtooth edge part, and an arc area of the arc welding area is superposed with one tooth form of the arc sawtooth edge part; the arc sawtooth edge part and the arc welding zone are symmetrically arranged relative to the longitudinal central axis of the mask body, and the adjacent arc welding zone is horizontally symmetrically arranged relative to the fold line.

6. The flat mask according to claim 3, wherein the welding lines are formed by arranging a plurality of rectangular welding points or circular welding points, and the plurality of rectangular welding points or the plurality of circular welding points are uniformly arranged; the contour of the isosceles triangle welding area or the arc welding area is formed by continuous welding lines or formed by arranging a plurality of rectangular welding points or circular welding points.

7. The planar mask according to claim 1, wherein the ear hanging portions are disposed on two sides of the mask body, the ear hanging portions are ear hanging bands or ear hanging ropes, the ear hanging bands are strip-shaped band bodies, the number of the ear hanging bands is two, the two ear hanging bands are symmetrically disposed, the ear hanging bands comprise two connecting ends, and the two connecting ends are respectively welded and fixed with the mask body through the disposed fixing welding zones.

8. The flat mask according to claim 1, wherein the upper side and the lower side of said mask body are respectively provided with horizontal welding zones distributed along the length direction, and said plastic nose clip is fixed on the upper portion of said mask body by a set of said horizontal welding zones parallel to each other.

9. The flat mask according to any one of claims 1 to 6, wherein an arc portion is formed on each of both sides of the mask body, and the bridge-shaped welding region is disposed along an arc edge of the arc portion.

10. The flat mask according to claim 4 or 5, wherein the two sides of the mask body are respectively formed with a side arc portion, and the sawtooth edge portion is disposed along the arc edge of the side arc portion.