JP2022041792A - mask - Google Patents

Abstract

To provide a mask excellent in a warmth retaining property.SOLUTION: A mask that laminates an outer layer sheet having thermal plasticity, a skin surface sheet having thermal plasticity, and at least one layer of a filter sheet roughly in a rectangular shape includes a pleat disposed in parallel to a long side and a cover part consisting of a sheet having thermal plasticity covering at least its one side. The outer layer sheet and the cover part, and the skin surface sheet and the cover part are mutually fused.SELECTED DRAWING: Figure 4

Description

The present invention relates to a mask.

In recent years, a disposable mask in which an ear strap or the like is attached to a mask body in which a non-woven fabric or the like is laminated is known (see, for example, Patent Document 1).

Demand for masks will increase in winter as infectious disease epidemics are more likely to occur. The mask is said to prevent infectious diseases, and since it can obtain a certain moisturizing and heat-retaining effect by wearing it, it can protect the mucous membrane of the throat from the low temperature and low humidity environment in winter.

Japanese Unexamined Patent Publication No. 2020-2483

By the way, the mask needs to be breathable, and the higher the breathability, the smoother the breathing becomes. However, as the air permeability of the mask increases, the moisturizing / heat-retaining effect of the worn portion decreases.

In order to solve the above problems, the present application provides a mask having a sufficient air layer inside and having a high heat insulating effect.

Specifically, the present invention is a mask in which an outer layer sheet having thermoplasticity, a skin surface sheet having thermoplasticity, and at least one layer of a filter sheet are laminated in a substantially rectangular shape, and arranged in parallel with the long side. A cover portion comprising a pleats and a sheet having a thermoplasticity covering at least one side thereof is provided, and a mask in which the outer layer sheet and the cover portion and the skin surface sheet and the cover portion are fused to each other is provided. ..

The cover portion may be arranged at both ends on the long side of the cover portion, and the cover portion is arranged so as to partially overlap the outer surface of the outer layer sheet and partially extend to the outside of the laminated body, and melt with the outer layer sheet. A second cover sheet that was worn and a second cover sheet that was partially overlapped with the skin side surface of the skin surface sheet, and a part of the cover sheet was arranged so as to extend outside the laminate, and fused with the skin surface sheet. The cover sheet is composed of the above, and may be configured by fusing the extending portions of the first sheet and the second sheet to each other. Further, the cover portion may be provided on a side located in the extending direction of the pleats. The cover portion may be made of the same material as the outer layer sheet or the skin surface sheet, and the material constituting the cover portion may be a part of the original fabric of the outer layer sheet or the skin surface sheet.

Further, the length of the short side of the filter sheet may be shorter than that of the outer layer sheet and the skin surface sheet, and a nose fitter having plasticity may be provided in the portion where the wearer's nose touches, and the central portion of the mask may be provided. The outer layer sheet, the skin surface sheet, and the filter sheet may be any one layer of long fibers, and the skin surface sheet and the outer layer sheet are long. It may be a fiber, and the fiber orientation of the sheet to be a long fiber may not match the extending direction of the pleats.

Further, at least one layer of the filter sheet can be a sheet made of pulp fiber as a main raw material, and the sheet made of pulp fiber as a main raw material can also be made of tissue paper. At least one layer of the filter sheet may be a sheet containing a biodegradable resin as a main raw material.

According to the present invention, since the filter sheet is not completely fixed, it is possible to realize a mask having a sufficient air layer inside and having a high heat insulating effect.

FIG. 1 is an external perspective view of the mask according to the embodiment. FIG. 2 is a diagram showing a sheet structure of a mask according to an embodiment. FIG. 3 is a diagram showing an example of a cover sheet manufacturing method. FIG. 4 is a diagram showing an example of a sheet fixing method using a cover sheet. FIG. 5 is a diagram showing an example of a perforation for sorting processing added to the mask. FIG. 6 is a diagram showing an example of a mask provided with a beam.

Hereinafter, the mask according to the embodiment of the present invention will be described with reference to the drawings. The configurations of the following embodiments are examples, and the present invention is not limited to the configurations of these embodiments.

FIG. 1 is an external perspective view of the mask according to the embodiment. As shown in FIG. 1, the mask 1 has a mask body 2, ear straps 3, 4, side portions 5, 6, and a nose fitter 7. The mask body 2 is made of a sheet-like breathable material and has a size capable of covering the wearer's mouth and nose. The ear straps 3 and 4 are made of a string-shaped elastic material, and the ends are joined to the side portions 5 and 6 located on both sides of the mask body 2 so that the ear straps 3 and 4 are joined to the left and right sides of the mask body 2. Each ring is formed.

The mask main body 2 is composed of various sheets such as a breathable non-woven fabric, and is a laminated body of a plurality of sheets. The plurality of sheets are appropriately joined to each other at the upper, lower, left, and right edges and the like. The mask body 2 has creases that can form a pleated three-dimensional shape. In such a crease, the side portions 5 and 6 are joined to the left and right end portions in a state where the mask main body 2 is folded in a fold shape, and the shape thereof is held by the side portions 5 and 6. That is, the folds are prevented from unfolding at the side portions 5 and 6 of the left and right end portions, and the creases are unfolded when the mask 1 is attached in the region near the center of the mask body 2, thereby causing the pleats of the mask body 2. Is expanded to form a three-dimensional shape. By closing the pleats when not attached, the mask body 2 can be made into a flat surface without being bulky.

The string-shaped elastic material constituting the ear strings 3 and 4 is formed of, for example, a rubber thread and cotton mixed woven band, a resin filament mixed knitted net, an elastic non-woven fabric, or the like. By joining both ends of such a string-shaped material to the side portions 5 and 6 of the left and right sides of the mask body 2, one end of the material becomes the starting point and the other end of the material ends. The loop-shaped ear straps 3 and 4 are formed on both the left and right sides of the mask body 2.

The nose fitter 7 is a member fixed to the mask main body 2 in a state in which the longitudinal direction extends in the left-right direction of the mask main body 2 in the upper part of the mask main body 2. The nose fitter 7 may be fixed to the inside of the laminated body in a state of being sandwiched between the sheet-shaped breathable materials constituting the mask main body 2, or may be fixed to the surface of the mask main body 2. May be good. The nose fitter 7 is a plastically deformable material having strength enough to be deformed into an appropriate shape by being pressed by the wearer with a finger and maintaining the shape even when released from the pressing. By providing such a nose fitter 7 on the upper part of the mask body 2, the wearer can close the gap formed between the nose and the mask body 2.

The above-mentioned materials constituting the mask 1 are preferably bonded by ultrasonic welding, but for example, stitching with a sewing thread or the like, bonding with a hot melt adhesive or the like, heat sealing, or various other bonding techniques can be applied. ..

FIG. 2 is a diagram showing a sheet structure of a mask according to an embodiment. The mask main body 2 according to the embodiment is configured by laminating each sheet of the outer layer sheet 10, the filter sheet 11, and the skin surface sheet 12. A non-woven fabric made of a thermoplastic polymer is used for the skin surface sheet 10 and the surface sheet 12. The number of filter sheets 11 is one in this embodiment, but the number of sheets may be further increased.

Since the skin surface layer 12 comes into direct contact with the skin, a non-woven fabric that is particularly soft to the touch is used. The surface layer 10 may be made of the same material as the skin layer 12, or may be a sheet of another standard having excellent resistance to the external environment. In order to prevent erroneous mounting, the color of the material can be changed between the surface layer 10 and the skin layer 12. A thermoplastic resin made from a biological resource (biomass), which is a renewable resource, may be used for the surface layer 10 and the skin layer 12. The filter sheet 11 is composed of a sheet having a filter effect.

The filter sheet 11 uses a material different from that of the skin surface sheet 10 and the outer layer sheet 12. For example, a thermoplastic polymer material having a melting point higher than that of the skin surface sheet and the outer layer sheet, such as polyethylene (PE) and polyethylene terephthalate (PET), may be used. If the filter sheet 11 is heat-sealed at an intermediate temperature of the melting point of the skin surface sheet 10 and the outer layer sheet 12 made of polyester, polypropylene, etc., the filter sheet 11 does not melt, but the skin surface sheet 10 and the outer layer sheet 12 do not melt. 12 melts and fuses to the filter sheet 11. Therefore, although the filter sheet 11 and the skin surface sheet 10 / outer layer sheet 12 are welded for the time being, they can be easily peeled off, and an air layer can be easily formed between the filter sheet 11 and the other sheets.

The filter sheet 11 may be made of a biodegradable plastic that is decomposed by microorganisms and finally becomes water and carbon dioxide. Biodegradable plastics include polyhydroxyalkanoate (PHA), polylactic acid (PLA), biopolybutylene succinate, polybutylene adipate teflate (PBAT) / polylactic acid compound, starch polyester resin, cellulose acetate, polyvinyl alcohol ( PVA), polyglycolic acid (PGA), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polybutylene adipate teflate (PBAT), polyethylene teftalate succinate (PETS) and the like. It is easy to process as a non-woven fabric, and it is preferable to use a material having the above-mentioned melting point characteristics. Two or more kinds of resin alloys among these may be used for the filter sheet 11. Further, regenerated cellulose such as rayon or cupra may be used. Since the filter sheet 11 using biodegradable plastic decomposes in the environment, a mask having a low environmental load can be realized.

Further, pulp fiber, tissue paper, or the like may be used for the filter sheet 11. These materials do not melt with heat. Therefore, since it is more difficult to fuse with other sheets, it is more desirable in terms of creating an air layer between the sheets without adhering to the other sheets. In addition, since these materials are finally decomposed into water and carbon dioxide in the environment like biodegradable plastics, a mask with a low environmental load can be realized.

The length of the filter sheet 11 in the short side direction is shorter than that of the other layers. As a result, the filter sheet 11 is not fixed to the other sheet at any end in the short side direction. Since all four sides are not fixed, the filter sheet 11 can change its shape more flexibly, and there is a high possibility that an air layer will be created between the filter sheet 11 and the other sheets.

FIG. 3 is a diagram showing an example of a cover sheet manufacturing method. The cover sheet 13 is arranged at both ends of the long side portion of the mask main body 2, and the cover portion is formed on the side portions 5 and 6. The skin surface sheet 10 and the outer layer sheet 12 are fixed by the cover portion, and the mask main body 2 in which the sheets do not disperse even if the filter sheet 11 moves relatively freely can be realized. Further, the ear straps 3 and 4 may also be fixed by the cover sheet 13. It is preferable that the cover sheet 13 is made of the same material as either or both of the skin surface sheet 10 and the outer layer sheet 12. If these sheets are made of the same material, they are welded more firmly to each sheet in the heat welding process, so that it is possible to form a mask in which the sheets are less likely to disperse and the ear straps are less likely to come off.

The cover sheet 13 made of the above-mentioned material can be obtained during the mask manufacturing process by a method as shown in FIG. 3, for example. In the mask manufacturing process, each sheet constituting the mask body is unwound from the roll sheet, laminated by the roller 22, folded, and heat-welded to form the mask body. In the example of FIG. 3, the skin surface sheet 10 is made wider by the cover sheet 13 than the width in the lateral direction of the mask body at the stage of the roll sheet. The skin surface sheet 10 is pulled out from the roll sheet, cut out by the cutter 20 to have a width corresponding to the width of the cover sheet 13 before being laminated with other sheets by the roller 22, and the short length of the mask body 2 by the cutter 21. It is cut out to the width in the hand direction.

The cover sheet 13 cut out in this way is arranged on the side portions 5 and 6 so as to wrap the ear straps 3 and 4 at the end of the manufacturing process of the mask main body 2, and is fixed by heat welding. In this way, the cover sheet 13 made of the same material as the skin surface sheet 10 and the outer layer sheet 12 can be incorporated into the mask. The sheet for cutting out the cover sheet 13 may be the outer layer sheet 12. Further, the cover sheet 13 can be formed by separately incorporating a cover material of the same material as either the skin surface sheet 10 or the outer layer sheet 12 without taking such a step.

FIG. 4 is a diagram showing an example of a sheet fixing method using a cover sheet. FIG. 4 is a cross section of the mask body 2 viewed from above in the lateral direction. The mask main body 2 according to the embodiment is configured by laminating each sheet of the outer layer sheet 10, the filter sheet 11, and the skin surface sheet 12, and the cover sheet 13 is used for fixing the sheets.

There are several fixing methods using the cover sheet 13. For example, as shown in FIG. 4A, the cover sheet 13 is arranged so as to wrap the outer layer sheet 10 and the skin surface sheet 12, and the outer layer sheet 10 and the skin surface sheet 12 are ultrasonically welded and heat welded, respectively. The sheet can be fixed by welding by a method such as.

Further, as shown in FIG. 4B, the cover sheet 13a is welded to the outer layer sheet 10 at the portion where the sheets are laminated, the cover sheet 13b is welded to the skin surface sheet 12, and finally the sheet is formed. The sheet may be fixed by welding the cover sheet 13a and the cover sheet 13b at the non-laminated portion. The mask is manufactured on a flat line, but the process of wrapping the mask with another sheet is special because it requires a cover sheet to be covered from the side surface of the mask. In the process as shown in FIG. 4B, it is only necessary to perform welding from the front surface and the back surface of the mask on the line, so that the formation of the mask can be completed on the same line.

By adopting such a fixing method, the filter sheet 11 is sandwiched between the bag-shaped outer layer sheet 10, the skin surface sheet 12, and the cover sheet 13. Therefore, a material such as pulp fiber that cannot be heat welded can be incorporated as the filter sheet 11. Further, since the filter sheet 11 is not completely fixed, the shape can be changed to some extent in the mask body 2, and an air layer can be created in the mask body 2. Further, since the filter sheet 11 is not welded, it is not necessary to use a material having thermoplasticity for the filter sheet 11. As the filter layer 11, a non-woven fabric made of a thermoplastic polymer, a non-woven fabric made of a biodegradable plastic, a pulp fiber sheet, tissue paper, or the like can be used.

Further, the cover sheet 13 is provided on a side located in the extending direction of the pleats. Even if the cover sheet 13 is provided on the side parallel to the pleats and the filter sheet 11 is not fixed, only a space can be created between the folds of the pleats and an air layer cannot be created in the entire mask. If the filter sheet 11 on the side located in the extending direction of the pleats is not fixed, an air layer can be created over the pleats and over the entire mask.

As shown in FIG. 1, the mask body 2 is provided with a nose fitter 7 at a portion corresponding to the wearer's nose. Since the upper edge of the mask body 2 is fixed to the skin surface of the nose and cheeks by the nose fitter 7, the pleats easily spread along the shape of the face, and it becomes easy to maintain the state. By opening the pleats, a gap is created between the filter sheet 11, the outer layer sheet 10, and the skin surface sheet 12, and an air layer is easily formed, so that the heat retention performance of the mask can be improved.

FIG. 5 is a diagram showing an example of a perforation for sorting processing added to the mask. A perforation 14 for sorting processing can be added to either the outer layer sheet 10 or the skin surface sheet 12 of the mask. For example, in FIG. 5A, a perforation 14a is provided at the longitudinal end of the mask. In FIG. 5B, the perforation 14b is provided at the lateral end of the mask, directly below the nose fitter portion. Of course, the perforation 14 may be placed at the end on the side of the jaw in the lateral direction. Further, it may be added to both the outer layer sheet 10 and the skin surface sheet 12 instead of either one.

After using the mask, the user breaks the perforation 14 and takes out the filter sheet 11 from the inside to perform a sorting process. As described above, since the filter sheet 11 is fused inside the mask with a strength that can be easily separated from other layers or is not fused in the first place, the user can easily take out the filter sheet 11 from the mask. .. When the filter sheet 11 is made of biodegradable resin, pulp fiber or the like, it can be recycled by compost or the like, and the remaining sheet can be recycled. Of course, the perforation 14 is not essential, and the user may take out the filter sheet 11 by breaking an arbitrary sheet.

Although it is difficult to make all the elements of the mask from naturally derived materials, according to the present invention, many of the components are made from natural organic materials, and at least the filter sheet 11 uses biodegradable materials. It is possible to realize a mask with a low environmental load.

In order to distinguish between the members using the biodegradable material and the other members, the members using the biodegradable material may be printed with a description or a mark for classification. In addition, the biodegradable material and other materials may be color-coded. This can assist the user in performing the sorting process accurately.

FIG. 6 is a diagram showing an example of a mask provided with a beam. In the example of this figure, the mask 1 includes the beam 8 in the substantially central longitudinal direction of the main body 2. The beam 8 is made of a plastically deformable material, and may be made of the same material as the nose fitter 7. It may also be a thinner material such as a covered wire. As shown in FIG. 4, the beam 8 may be adhered to the front surface of the surface layer sheet 10 of the mask, or may be incorporated in the back surface of the surface layer sheet 10. By adjusting the shape of the beam 8, the user can apply tension to the mask body 2 to create an air layer between the sheets, so that a mask with higher heat retention performance can be realized. In addition, a beam is also provided in the center of the short side.
The three-dimensional shape may be maintained more stably.

One or more of the outer layer sheets 10, the filter sheet 11, and the skin surface sheet 12 on which the mask main body 2 is laminated, particularly the outer layer sheet 10 and the skin surface sheet 12, a long fiber non-woven fabric such as a spunbonded non-woven fabric is used. Can be used. At this time, it is desirable that the fiber orientation (MD direction) of the long fibers does not match the extending direction of the pleats.

When the long-fiber non-woven fabric is distorted so as to be substantially orthogonal to the fiber orientation, the restoring force works more strongly and tries to return to the original flat state. Therefore, if the non-woven fabric is bent so as to be substantially orthogonal to the fiber orientation to form the pleats, the pleats can be easily opened and the air layer can be more easily secured at the time of wearing. In addition, the restoring force acts on a specific or a plurality of sheets, which makes it difficult for the sheets to come into close contact with each other. Therefore, an air layer is easily formed between the sheets, and a mask having more excellent heat retention can be realized.

Although the embodiment of the mask in the present invention has been described above, the content of the present invention is not limited to the embodiment. For example, three filter sheets can be used, and a non-woven fabric made of long fibers can be used in the center thereof and bent so as to be orthogonal to the fiber orientation to form pleats. By doing so, the restoring force of the long fiber nonwoven fabric in the center allows the filter sheets to be sufficiently separated from each other, and an air layer can be formed between them. Further, this air layer decelerates the fine particles between the filters and increases the possibility of being captured by the filter, so that a mask having excellent heat retention and hygiene can be realized.

The embodiments and application examples disclosed above can be combined.

1 ・ ・ Mask 2 ・ ・ Mask body 3,4 ・ ・ Ear straps 5,6 ・ ・ Side 7 ・ ・ Nose fitter 8 ・ ・ Beam 10 ・ ・ Skin sheet 11 ・ ・ Filter sheet 12 ・ ・ Outer layer sheet 13 ・・ Cover sheet 14 ・ ・ Perforation 20 ・ ・ Cutter 21 ・ ・ Cutter 22 ・ ・ Roller

Claims (15)

A mask in which an outer layer sheet having thermoplasticity, a skin surface sheet having thermoplasticity, and at least one layer of a filter sheet are laminated in a substantially rectangular shape to form a laminated body.
Pleats arranged in parallel with the long side,
A cover portion made of a thermoplastic sheet covering at least one side thereof,
Equipped with
The outer layer sheet and the cover portion, and the skin surface sheet and the cover portion were fused to each other.
mask. The cover portions are arranged at both ends on the long side.
The mask according to claim 1. The cover portion is
A first cover sheet fused with the outer layer sheet by stacking a part on the outer surface of the outer layer sheet and arranging a part so as to extend to the outside of the laminated body.
A second cover sheet fused with the skin surface sheet by stacking a part on the skin side surface of the skin surface sheet and arranging the part so as to extend outside the laminate,
Consists of
It is formed by fusing the extending portions of the first sheet and the second sheet to each other.
The mask according to claim 1 or 2. The cover portion is made of the same material as the outer layer sheet or the skin surface sheet.
The mask according to any one of claims 1 to 3. The material constituting the cover portion is a part of the original fabric of the outer layer sheet or the skin surface sheet.
The mask according to claim 4. The cover portion is provided on a side located in the extending direction of the pleats.
The mask according to any one of claims 1 to 5. Equipped with a plastic nose fitter where the wearer's nose touches,
The mask according to any one of claims 1 to 6. The length of the short side of the filter sheet is shorter than that of the outer layer sheet and the skin surface sheet.
The mask according to any one of claims 1 to 7. With a plastic beam in the center of the mask,
The mask according to any one of claims 1 to 8. One of the outer layer sheet, the skin surface sheet, and the filter sheet is a long fiber.
The mask according to any one of claims 1 to 9. The skin surface sheet and the outer layer sheet are long fibers.
The mask according to any one of claims 1 to 10. The fiber orientation of the sheet, which is a long fiber, does not match the extending direction of the pleats.
The mask according to claim 10 or 11. At least one layer of the filter sheet is a sheet whose main raw material is pulp fiber.
The mask according to any one of claims 1 to 12. The sheet using the pulp fiber as a main raw material is tissue paper.
The mask according to claim 13. At least one layer of the filter sheet is a sheet whose main raw material is a biodegradable resin.
The mask according to any one of claims 1 to 12.

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