KR20200137785A - Three dimensional shape folding type mask improved in structure of string adjustment - Google Patents

Abstract

The present invention discloses a three-dimensional folding type mask, comprising: a mask body having a face receiving portion; wear straps attached to both sides of the mask body to form a loop that can be hung on a wearer′s ears; and a length-adjusting hole formed in the mask body to insert a part of the wear strap so as to adjust the length of the wear strap.

Description

THREE DIMENSIONAL SHAPE FOLDING TYPE MASK IMPROVED IN STRUCTURE OF STRING ADJUSTMENT}

The present invention relates to a three-dimensional foldable mask, and more particularly, to a three-dimensional foldable face mask capable of adjusting the wearing length to suit the size of the wearer's face by improving the structure of the earring part that is caught on the wearer's ear.

A face mask is a respiratory protection device worn so as not to inhale fine dust or dust floating in the air in places such as outdoors or workplaces with high dust concentration, and is generally made of air-permeable fiber material.

In general, the face mask is configured in the form of a foldable mask that can be unfolded and worn on the face when worn for convenience during carrying or handling, and can be folded flat when not worn.

The technology related to the folding mask is disclosed in Patent Document 1 and Patent Document 2.

Patent Document 1 proposes a breathing mask, characterized in that a component such as an exhaust valve is fixed to the respirator body by a printed adhesive patch. In addition, Patent Document 1 discloses a process of manufacturing a breathing mask by continuously supplying a filter material, a cover web material, a foam material, and the like, respectively, and bonding them to each other to form a web assembly, and then cutting them one by one in individual mask units.

Patent Document 2 discloses a mask including a base panel, an upper panel, and a lower panel, and having a shape in which the base portion is curved outward in an unfolded state. The mask is divided into an upper surface and a lower surface so that the base portion has a shape curved outward, and a structure in which the width of the upper surface and the lower surface is reduced from the center to both ends is proposed.

On the other hand, since the mask must be worn in close contact with the face part, the length of the strap of the mask must be freely adjustable to suit the shape and size of the wearer's head and face part. A technique related to a mechanism for adjusting the length of a mask string is published in Patent Document 3. Patent Document 3 discloses that one side of the mask strap is freely attached to the rear end of the horizontally long elastic thin plate piece, and the other side of the mask strap is freely attached to the multi-stage hanging portion installed on the elastic thin plate piece. Disclosed is a length adjusting member of a string for tying a mask, characterized in that attached thereto.

However, the conventional mask strap strap length adjustment method is not only inconvenient to use as a method in which a member for adjusting the strap length when worn is attached to one strap of the mask and combined with the other strap is adopted, as well as the occipital part of the human body There is a vulnerability that the fit is not good, such as being pressed by.

Patent Document 1: Korean Patent Publication No. 10-0531054 Patent Document 2: Korean Patent Application Publication No. 10-2008-0102881 Patent Document 3: Korean Patent Application Publication No. 1998-070405

The present invention is invented in consideration of the above problems, and provides a three-dimensional foldable mask that maintains a flat shape in a folded state so that it is convenient to carry or handle, and when worn, the wearing length can be easily adjusted to suit the size of the wearer's face. Having that purpose.

Another object of the present invention is to provide a three-dimensional folding mask having a structure capable of closely contacting the mask body to the face portion without pressure or stimulation to the skin when worn.

In order to achieve the above object, the present invention includes a mask body having a face receiving portion; Wearing straps attached to both sides of the mask body to form a loop that can be caught by the wearer's ears; And a length-adjusting hole formed in the mask body so that a part of the wearing strap can be inserted so that the length of the wearing strap can be adjusted.

The mask body includes: a base portion providing a front portion of the mask; A first side portion that can be folded in a direction of an inner surface of the base portion and is connected adjacent to an upper edge of the inner surface of the base portion; A second side portion that can be folded in a direction of an inner surface of the base portion and is connected adjacent to a lower edge of the inner surface of the base portion; And a close contact flap provided at each of the four corners of the base part to enhance adhesion to the face part when worn, wherein the wearing strap is preferably attached to both sides of the base part to form a loop.

The present invention may further include a flap fold line formed to extend in a direction transverse to the base portion so that the contact flap can be folded or bent in the inner surface direction when worn.

The base portion and the contact flap may be integrally formed of a non-woven material, and both ends of the wearing strap may be ultrasonically fused to the base portion from the inside of the fold line of the flap to be bonded.

The length adjustment hole is formed in the close contact flap, both ends of the wearing strap are bonded to the outer surface of the base part, and a part of the wearing strap is fitted in the form of a loop in the length adjusting hole so that the inner side of the close contact flap It is desirable to be located.

It is preferable that the shape of the rim end between the close contact flaps adjacent to each other is semicircular or arc-shaped.

It is preferable that contact flaps adjacent to each other on the outer side of the flap fold line and rim ends between the contact flaps adjacent to each other are positioned on the outside.

Both ends of the first side in the longitudinal direction and both ends of the second side in the longitudinal direction may be located inside the flap fold line.

It may further include a flap isolator formed by ultrasonic fusion at the midpoint of the flap fold line so as to independently fold or bend adjacent flaps.

The three-dimensional folding mask with improved string control structure according to the present invention has the following effects.

First, when adjusting the length, it is possible to quickly and easily adjust the wearing length of the mask by inserting a part of the length of the wearing strap into the length adjusting hole in the form of a loop.

Second, in the wearing state, the edge portions of both ends of the mask are closely adhered to the face by the close contact flaps, thereby blocking the inflow of foreign substances and preventing leakage.

Third, since the close contact flap is naturally pressed by the wearing strap, which has both ends located on the inside of the flap fold line, it comes in close contact with the face, so that adhesion can be increased and pain in the ear can be reduced when worn.

Fourth, the close contact flaps adjacent to each other at both ends of the mask are independently folded or bent with each other by the flap isolator so that they are in close contact with each other in accordance with the size, shape, and difference of the face, so that adhesion can be further improved.

Fifth, by designing the lengths and angles of the close contact flaps adjacent to each other at both ends of the mask to be symmetrical or asymmetrical, pain to the face and ears can be effectively relieved.

Sixth, as the close contact flap is pulled by the wearing strap and is in close contact with the face part, it is possible to further increase the adhesion by pressing the first side and the second side.

Seventh, since the mask has a flat shape in a folded state, there is an advantage of being convenient to carry or handle.

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, which will be described later. It is limited only to and should not be interpreted.
1 is a perspective view showing a folded state of a three-dimensional folding mask according to a preferred embodiment of the present invention.
FIG. 2 is a perspective view illustrating an unfolded state of the first side and the second side in FIG. 1.
3 is a partial plan view of a three-dimensional folding mask according to a preferred embodiment of the present invention.
4 is a side view showing an example of wearing a three-dimensional folding mask according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

1 is a perspective view showing the appearance of a three-dimensional folding mask according to a preferred embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which the first side and the second side are unfolded in FIG. 1.

1 and 2, a three-dimensional folding mask according to a preferred embodiment of the present invention includes a mask body having a predetermined shape, a wearing strap 40 attached to both sides of the mask body, and a wearing strap 40. It includes a length adjustment hole 70 formed on both sides of the mask body so that a part of the mask can be inserted.

The mask body has air permeability and is formed of a soft nonwoven fabric material to enable folding. On the inner surface of the mask body, there is provided a face receiving portion capable of accommodating at least the nose and mouth of the human body when worn. The mask body may be formed of one or more layers of fabric. Preferably, the mask body provides a front portion of the mask, and a base portion 10 having a close contact flap 11 at each of the four corners, and a first side portion 20 connected adjacent to the upper edge of the inner surface of the base portion 10. ), and a second side portion 30 connected adjacent to the lower edge of the inner surface of the base portion 10.

The base portion 10 is a filter that provides a front portion of the mask. As shown in Fig. 1, the base portion 10 maintains a flat shape in the folded state of the mask. When wearing the mask, the base portion 10 serves to protect the body by covering the mouth and the tip of the nose.

In order to secure a space for covering the nose, mouth, and chin portions of the human body when wearing the mask, the base portion 10 is configured to gradually narrow in width from the center of the mask to both ends.

The close contact flap 11 is provided with a pair of upper and lower sides at one end and the other end in the length direction of the base unit 10 to enhance adhesion to the face when worn. Preferably, the close contact flap 11 is formed integrally with the base portion 10 and protrudes to extend in the longitudinal direction of the base portion 10 and is positioned at each of the four corners of the base portion 10. According to a modified example of the present invention, the contact flap 11 may be formed of a separate member and may be provided attached to the four corners of the base portion 10.

It is preferable that a concave empty space (refer to 60 in FIG. 3) is formed between the pair of close contact flaps 11 adjacent to the base portion 10 in the vertical direction. The rim end between the pair of close contact flaps 11 is adjacent to the concave empty space 60, and the contour shape of the rim end and the end contour shape of the close contact flaps 11 are irritated upon contact with the facial skin. It is desirable to have a rounded shape such as a semicircle or arc in order to minimize

When the close contact flaps 11 are pulled by the wearing strap 40, the base part 10 presses the first side part 20 and the second side part 30 toward the skin of the face part while being in close contact with the face part, thereby further enhancing the adhesion. have. In addition, the close contact flap 11 is pressed by the wearing strap 40 and is in close contact with the face part.

As shown in FIG. 3, of the contact flaps 11, the contact flap 11 connected to the lower edge of the base portion 10 is relatively more than the contact flap 11 connected to the upper edge of the base part 10. It is formed to be bent at a large angle to extend. In other words, the angle of the boundary between the lower rim of the base 10 and the rim of the close contact flap 11 connected thereto (see'A') is the upper rim of the base 10 and the close contact flap 11 connected thereto. It is formed to be bent at a relatively large angle compared to the angle of the boundary between the edges (see'B'). Here, the boundary portions'A' and'B' coincide with points corresponding to the flap fold line 12. That is, the boundary portions'A' and'B' are located on the extension line of the flap fold line 12.

The configuration in which the extension angles of the pair of close contact flaps 11 adjacent to each other are formed differently as described above naturally conform to the shape of the ear of the human body so that the wearing strap 40 is good when worn on the ear, and the base portion 10 The second side part 30 is connected to the lower edge of the ergonomically designed to further strengthen the adhesion when the inner surface of the second side part 30 contacts the user's chin area and its surroundings when wearing the mask. Structure.

On both sides of the base portion 10, flap fold lines 12 are formed to extend in a direction crossing the base portion 10 so that the pair of close contact flaps 11 can be folded or bent in the direction of the inner surface when worn. have. An edge between the pair of close contact flaps 11 and the pair of close contact flaps 11 is positioned on the outside based on the flap fold line 12. In addition, both ends in the longitudinal direction of the first side portion 20 and both ends in the length direction of the second side portion 30 are located inside the flap fold line 12.

At the midpoint of the flap fold line 12, a flap isolator 13 having a predetermined shape that can be folded or bent independently without affecting each other is formed by ultrasonic fusion between the pair of close contact flaps 11 adjacent to each other. have. The flap isolator 13 is preferably formed in a circular or concentric fusion pattern in order to effectively block external forces such as tension, bending, and torsion generated when the close contact flap 11 is folded or bent. The flap isolator 13 also serves as a central point or an axis when the close contact flap 11 is folded or bent in conformity with the shape of the face part.

When wearing the mask, when the wearing straps 40 connected to the contact flaps 11 are pulled, the contact flaps 11 are folded or bent in accordance with the shape of the face part, so that they are in close contact with the skin and are in close contact with each other by the flap isolator 13. Since they are substantially separated, each folding or bending operation can be performed independently.

It is preferable that an edge fusion line 14 is formed around the edges of the base portion 10 and the close contact flaps 11 to increase rigidity and improve the aesthetics.

In the folded state of the mask, the first side part 20 and the second side part 30 are folded on the inner surface of the base part 10 to maintain a state of overlapping each other, and in the unfolded state, each protects the user's nose and chin area. Will play a role.

One end of the first side portion 20 is connected to be adjacent to an upper edge of the inner surface of the base portion 10 so as to be folded in the direction of the inner surface of the base portion 10. When wearing the mask, the inner surface of the first side part 20 comes into contact with the user's nose and its surroundings.

One end of the second side portion 30 is connected to be adjacent to a lower edge of the inner surface of the base portion 10 so as to be folded in the direction of the inner surface of the base portion 10. When wearing the mask, the inner surface of the second side portion 30 comes into contact with the user's chin area and its periphery.

Additionally, a strip-shaped nose wire 50 is attached to the first side part 20 to maintain and adhere to the shape when worn, and to improve fit and flow down the mask outside the nose wire 50 To prevent the like, for example, a fitting foam (not shown) made of a sponge material may be attached.

Both ends (a, b) of the wearing strap 40 made of an elastic material such as a rubber band are attached to the base portion 10. The wearing strap 40 forms a loop that can be caught by the ears when both ends (a, b) are attached to both sides of the base unit 10 by ultrasonic fusion or the like. In order to adjust the length of the wearing strap 40, both ends (a, b) of the wearing strap 40 are ultrasonically fused to the base portion 10 in the inner region of the flap fold line 12 and then bonded. In order to prevent skin pain, both ends (a, b) of the wearing strap 40 are preferably bound to the outer surface of the base portion 10.

The length adjustment hole 70 is formed in at least one close contact flap 11 so that a part of the wearing strap 40 can be inserted so that the length of the wearing strap 40 can be adjusted. Although not shown in the drawings, the length adjustment holes 70 may be formed one by one in the contact flaps 11 at both ends of the mask adjacent to the upper edge of the base portion 10.

The wearing strap 40 is positioned inside the close contact flap 11 by being fitted in the form of a loop in the length adjustment hole 70 for some length sections. The degree of length adjustment of the wearing strap 40 may be controlled according to the length of the loop fitted in the length adjustment hole 70.

It is preferable that the length adjustment hole 70 is formed by a hole having a small diameter compared to the diameter of the wearing strap 40 so that the wearing strap 40 can be tightly fitted. Alternatively, the length adjustment hole 70 may be formed in a slit shape by sheathing or the like. In order to achieve an effective length adjustment action, the length adjustment hole 70 is preferably formed in a section between the end of the flap fold line 12 and the close contact flap 11. More preferably, the length adjustment hole 70 is formed at an intermediate point between the end of the flap fold line 12 and the close contact flap 11.

Although not shown in the drawings, a predetermined exhaust valve may be added to a part of the base unit 10 if necessary.

Hereinafter, a method of manufacturing a three-dimensional folding mask according to a preferred embodiment of the present invention will be described.

First, a filter fabric made in the form of a sheet is prepared, and the filter fabric is folded so that one and the other are overlapped with each other so that the filter fabric is overlapped so as to form three layers as a whole. According to a modification of the present invention, the filter fabric may be manufactured in a form in which several pieces are stacked through various folding operations in which at least two or more layers are overlapped.

Thereafter, the filter fabric is placed on an ultrasonic welding jig and fused according to a predetermined frame fusion line 14 pattern and a flap fold line 12 pattern to bond different layers in an overlapping state to each other. Here, the edge fusion line 14 pattern is a shape corresponding to the outline of the base portion 10 and the close contact flap 11, and the flap fold line 12 pattern is the base portion 10 on both sides of the base portion 10 Is a straight line crossing in the width direction. In addition, fusion line patterns having a predetermined shape may be further added in consideration of reinforcement or aesthetics of the base portion 10.

The ultrasonic welding process may be performed sequentially by rolling an ultrasonic tool in the form of a roll on the filter fabric and going from one end of the filter fabric to the other end.

After the ultrasonic fusion is completed, the blade mechanism is pressed from the top to the bottom and cut to produce a mask body in which the base portion 10, the first side portion 20, and the second side portion 30 are assembled. The base portion 10, the first side portion 20, and the second side portion 30 are fused to each other while the edge portions are fused to each other by the above-described fusion bonding process to have a bonding relationship.

The first side portion 20 can be folded in the direction of the inner surface of the base portion 10 by the above-described fusing process and is connected adjacent to the upper edge of the inner surface of the base portion 10. In addition, the second side portion 30 can be folded in the direction of the inner surface of the base portion 10 and is connected adjacent to the lower edge of the inner surface of the base portion 10.

In addition, the press-cutting process is performed so that a pair of close contact flaps 11 are protruded at both ends of the base part 10 in the longitudinal direction, and a concave empty space 60 is formed between the pair of close contact flaps 11. Perform.

After the cutting process is completed, a hole 70 for length adjustment is formed in the close contact flaps 11 at both ends of the mask adjacent to the upper edge of the base 10 using a predetermined punch, awl, or a blade. At this time, the length adjustment hole 70 is preferably located at an intermediate point between the end of the flap fold line 12 and the close contact flap (11).

Thereafter, the nose wire 50 and the fitting form are attached to the inner surface of the first side portion 20, and both ends of the mask body, that is, in the inner region of the flap fold line 12, are attached to both sides of the base portion 10. Attach both ends (a, b) of the wearing strap 40 by ultrasonic fusion.

The three-dimensional folding mask provided according to a preferred embodiment of the present invention maintains a flat shape in a folded state, and is used in an unfolded state as shown in FIG. 4 when worn. In the unfolded state of the mask, the base portion 10 is curved in the direction of the inner surface, and the first side portion 20 and the second side portion 30 are spread in the vertical direction, respectively, and converted into a three-dimensional shape.

The length of the wearing strap 40 can be easily adjusted by folding a part of the length section in a loop shape and inserting it into the length adjustment hole 70 formed in the close contact flap 11. In the wearing state, the wearing strap 40 presses the contact flap 11 in the direction of the face, so the length section in the shape of a loop inserted into the length adjustment hole 70 does not easily deviate from the length adjustment hole 70.

In the wearing state, the edge portions of both ends of the mask are in close contact with the face portion by the close contact flaps 11 located at the four corners of both ends of the mask to block the inflow of foreign substances and prevent leakage.

A pair of close contact flaps 11 facing each other in the vertical direction of the mask are independently folded or bent with each other by the flap isolator 13 so as to be in close contact with each other according to the size or shape of the face, so that adhesion can be further improved.

In addition, as the close contact flap 11 is pulled by the wearing strap 40, the close contact flap 11 comes into close contact with the face and the base 10 presses the first side 20 and the second side 30 The adhesion can be further increased.

The three-dimensional folding mask according to the present invention having the configuration as described above can be usefully used as a face mask for fine dust to prevent inhalation of fine dust. As an alternative, it can also be used as an industrial dust mask to prevent inhalation of dust floating in the air in places such as a workplace.

In the above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and within the scope of the technical idea of the present invention by those of ordinary skill in the art to which the present invention pertains. Of course, various modifications and variations are possible.

10: base portion 11: close contact flap
12: Flap fold line 13: Flap isolator
20: first side 30: second side
40: wearing strap 70: length adjustment hole

Claims (9)

A mask body having a face receiving portion;
Wearing straps attached to both sides of the mask body to form a loop that can be caught by the wearer's ears; And
A three-dimensional folding mask comprising a; a length adjustment hole formed in the mask body to insert a part of the wearing strap so as to adjust the length of the wearing strap. The method of claim 1,
The mask body,
A base portion providing a front portion of the mask;
A first side portion that can be folded in a direction of an inner surface of the base portion and is connected adjacent to an upper edge of the inner surface of the base portion;
A second side portion that can be folded in a direction of an inner surface of the base portion and is connected adjacent to a lower edge of the inner surface of the base portion; And
Including; a close contact flap provided at each of the four corners of the base portion to enhance adhesion to the face portion when worn,
The wearing strap is a three-dimensional folding mask, characterized in that attached to both sides of the base portion to form a loop. The method of claim 2,
A three-dimensional folding mask further comprising a; flap fold line formed to extend in a direction transverse to the base portion so that the contact flap can be folded or bent in the inner surface direction when worn. The method of claim 3,
The base portion and the close contact flap are integrally formed of a nonwoven material,
A three-dimensional folding mask, characterized in that both ends of the wearing strap are ultrasonically fused to the base part from the inside of the flap fold line. The method of claim 4,
The length adjustment hole is formed on at least one or more close contact flaps,
Both ends of the wearing strap are attached to the outer surface of the base portion,
A three-dimensional folding mask, characterized in that a part of the wearing strap is inserted into the length adjustment hole in the form of a loop and is located inside the close contact flap. The method of claim 3,
Three-dimensional folding mask, characterized in that the shape of the edge between the adjacent adjacent flaps are semicircular or arc shape. The method of claim 5,
A three-dimensional folding mask, characterized in that contact flaps adjacent to each other on an outer side of the flap fold line and edge ends between the contact flaps adjacent to each other are positioned. The method of claim 7,
A three-dimensional folding mask, characterized in that both ends in the longitudinal direction of the first side and both ends in the longitudinal direction of the second side are located inside the flap fold line. The method of claim 3,
A three-dimensional folding mask further comprising a; flap isolator formed by ultrasonic fusion at the midpoint of the fold line of the flap to allow the close contact flaps adjacent to each other to be independently folded or bent.

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