JP3045995U - Shape-preserving mask - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an inexpensive shape-retaining mask that can maintain a close contact state with no gap between the face and the mask body, can be completely incinerated by incineration after use, and is inexpensive. provide. SOLUTION: A flammable shape holding material 3 is attached to at least a part of a mask body made of a woven fabric, a nonwoven fabric, gauze, air-permeable paper or the like and having a performance of removing fine particles, and the shape holding material 3 is used. Occasionally, the mask body 2 can be brought into close contact with a part of the face 4 by deforming according to the unevenness of the face 4 so that the mask body 2 is brought into close contact with the face 4 to eliminate the gap and to breathe from the gap. This is a mask that does not cause fogging of the glasses due to leakage, or that can effectively prevent invasion of pollen. Since this mask does not use any metal material, it is safe, does not react to magnetic detectors or metal detectors, and can be completely incinerated and reduced by incineration after use.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a shape-retaining type mask, and more specifically, attaches a flammable shape-retaining material to the mask body, deforms it according to the unevenness of the face when necessary, and adheres the mask body to the face. The present invention relates to a shape-maintaining mask that can be made to work.

[0002]

[Prior art]

 In a conventional mask, a strap made of rubber material attached to both ends of the mask body is hung on both ears, and the mask body is brought into close contact with the face only by the elasticity of the strap. However, since the shape of the face, especially the nose and mouth area covered by the mask body, is rich in irregularities, only the strap on the mask body causes the elasticity of the strap between the mask body and the nose and mouth area covered by it. A gap is created, and outside air can enter through the gap, resulting in sneezing not stopping in people with hay fever. Conversely, the breathing out leaks through the gap, and the person wearing megane makes the lens cloudy, and bacteria enter and leave the gap in the hospital operating room, reducing its role as a mask.

[0003] For example, a mask used in a hospital is immediately incinerated together with other waste immediately after use, particularly in surgery and the like. In some cases, a thin bar made of aluminum or stainless steel is attached to the mask body, deformed according to the unevenness of the face, and the mask body is used in close contact with the face. In this case, it is also known that, as a shape-retaining material, a wire, which is known as a trade name “Vinitai”, is used as a core material, and is sandwiched between two thermoplastic resin films from above. ing.

[0004]

[Problems to be solved by the invention]

 However, a mask in which the mask main body is brought into close contact with the face only by the elasticity of the strap is not suitable for a strictly required role of the mask because a gap is formed between the face and the mask main body. In addition, a mask with a thin bar made of aluminum or stainless steel attached to the mask body not only causes a high cost, but also does not burn even after incineration, so that it remains in the incinerator and must be cleaned up.

Accordingly, an object of the present invention is to provide an inexpensive shape-retaining mask that can maintain a close contact state without a gap between the face and the mask body, and can be completely incinerated by incineration after use. To provide.

[0006]

[Means for Solving the Problems]

 The present invention has been proposed to achieve the above object, and has the following structure. That is, according to the present invention, at least a part of a mask body made of woven fabric, nonwoven fabric, gauze or breathable paper is provided with a flammable shape retaining material, deformed according to the unevenness of the face, and A shape-maintaining mask characterized in that the shape can be maintained is provided.

Further, according to the present invention, there is provided a shape-maintaining mask having a basic configuration in which the shape-maintaining material is made of a plastically deformable olefin-based resin in a linear shape, a flat shape, or a combination thereof. You.

According to the present invention, the shape-retaining material has a core made of a polyolefin-based first component and a sheath made of a second component made of a polymer the same as or different from the first component. The shape-maintaining mask is provided which is a structural composite stretched product, wherein the plastic stretchability of the composite stretched product is 180 ° or 90 ° and the return angle by bending is 20 ° or less.

Further, according to the present invention, there is provided the above-mentioned shape-maintaining mask, wherein the core and / or the sheath of the core-sheath structure composite stretched material is colored in one color or two or more colors.

Further, according to the present invention, there is provided the above-described shape-maintaining type mask, wherein the shape-maintaining material is one in which a plurality of linear materials are arranged in parallel and integrated.

[0011]

[Embodiment of the invention]

 According to the invention of claim 1, a flammable shape-retaining material is attached to at least a part of a mask main body made of woven or non-woven fabric and capable of removing fine particles according to a purpose of use, and the shape-retaining material is attached. Another object of the present invention is to provide a shape-maintaining mask characterized in that the mask main body can be brought into close contact with the face by deforming according to the unevenness of the face when necessary. Therefore, the face is covered with the mask body, the shape-retaining material is deformed according to the unevenness of the face, the mask body is brought into close contact with the face to eliminate gaps, and the role of the mask body is exerted. It does not react to not only the detector but also the metal detector. The used mask can be completely incinerated and reduced by incineration.

According to a second aspect of the present invention, there is provided a shape-retaining mask in which the shape-retaining material is made of a plastically deformable resin, and the cross-sectional shape of the shape-retaining material is linear and / or flat. Things. Therefore, since the resin is plastically deformable, it has the same effect as the above-mentioned invention, and almost no ash is generated.

[0013] The invention according to claim 3 is that the shape-retaining material is a core-sheath type structural composite stretched product, in which the core and the sheath are made of the same olefin polymer, and the core is made of an olefin polymer. However, it does not specify that the sheath may be formed of another polymer. Regarding the plastic deformability of the composite stretched product, a shape retention type mask having a good shape retention function is provided by the fact that the composite stretched product has a return angle of 20 degrees or less when bent by 180 and 90 degrees.

[0014] The invention of claim 4 defines a state where the core and / or the sheath of the core-sheath type structural composite stretched product is colored. For coloring, either the core or the sheath may be performed, or both may be colored. If both are colored, various combinations of colors can be enjoyed depending on the combination.

[0015] The invention of claim 5 defines the sectional shape of the shape holding material. As the cross-sectional shape of the shape maintaining material of the present invention, a single linear material or a single flat plate or a combination thereof can be used as defined in claim 2, but a plurality of linear materials are arranged in parallel and integrated. This is preferable in that the effect can be exhibited well.

[0016]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a shape-retaining mask showing an embodiment of the present invention, FIG. 2 is a top view of the same, and FIG. 3 is a perspective view showing a use state of the shape-retaining mask. Reference numeral 1 denotes a shape preserving mask. The shape preserving mask 1 has a flammable shape preserving material 3 attached to a mask body 2 having a fine particle removing performance according to a purpose of use. The mask body 2 can be brought into close contact with the face 4 by deforming the face 3 according to the unevenness of the face 4 when necessary.

The mask main body 2 obviously has a performance of removing fine particles such as dust, dust, fungi and the like in the air in accordance with the purpose of use, but it is necessary that the mask main body 2 is not suffocating when breathing. Hanging cords 6 are attached to both ends of a generally rectangular gauze ground 5, and a supplementary gauze ground 7 is further provided at a portion corresponding to a mouth. Since the mask body 2 is mainly made of gauze ground, it has high flexibility, and therefore has good adhesion to the face 4 due to the elasticity of the strap 6. However, the portion of the face 4 covered by the mask body 2 is an uneven nose and mouth, and conversely, a gap is formed between the mask body 2 and the face 4 due to the flexibility of the gauze ground 5 and the elasticity of the strap 6. Easier to do. Therefore, in the present invention, the shape holding material 3 is provided on at least a part of the mask body so that the shape corresponding to the uneven shape of the face can be held, and an auxiliary gauze ground 7 is added as necessary. You may.

The mask body 2 may be made of woven fabric, non-woven fabric, or paper other than the illustrated gauze fabric 5 and supplementary gauze fabric 7. Masks to be worn during hospital operations are usually disposable and have a simple structure in which a strap is fused to a nonwoven fabric. The material may be a natural material, a synthetic resin material, an inorganic material, or the like, as long as it can remove fine particles such as dust, dust, fungi, etc. from the air when the mask body 2 is formed, and has a breathability that is not breathless. The shape of the mask body 2 is not limited to the molds shown in FIGS.

The shape-maintaining mask 1 of the present invention can be manufactured, for example, according to the procedure shown in FIGS. First, one end 11 of the gauze ground 5 is bent longer, and the other end 12 is bent shorter, and one shape holding material 3 is placed on the gauze ground 5 between both bent parts 11a and 12a. Stick. This fixing method may be appropriately selected from bonding, sewing, sewing, and the like, depending on the mask material. When the mask material is a synthetic resin nonwoven fabric or the like, ultrasonic sealing is suitable. Next, the hanging string 6 is inserted into both the bent portions 11a and 12a. The strap may be ultrasonically fused at the ends to the upper and lower ends of the mask. The supplementary gauze ground 7 is placed on the shape retaining material 3 between the bent portions 11a and 12a, one end 11 is folded first, and the other end 12 is folded thereon. In this state, both ends 11 and 12 are sewn with a sewing machine, and the hanging string 6 and the supplementary gauze base 7 are held by the stitches 11b and 12b to form the shape-retaining mask 1. The replenishing gauze base 7 may be provided with a material for removing a special gas, odor, ultrafine particles and the like.

Although only one shape holding material 3 is shown in FIGS. 1 to 6, a plurality of shape holding materials 3 may be used as shown in FIGS. The shape-retaining material 3 is not particularly limited as long as it is a flammable material having a shape-retaining property, but usually a resin is used. At present, polyethylene, other polyolefins, polyesters, polyacetals, and the like are used as the resin. Further, as shown in FIG. 9, the shape retaining material 3 is composed of a plurality of materials 13 each having the above-described flammable and shape retaining properties even if the sectional shape is circular, oval, elliptical, rectangular, or circular. They may be arranged side by side, or may be a shape retaining material 3a made of a composite plastically deformed product obtained by heat-sealing another sheet-like resin 14 to the material 13 as shown in FIG. The shape of the shape-retaining material can be arbitrarily changed according to the purpose of use, but from the viewpoint of shape-retaining property, it may be any one shown in FIG. 10 in which a plurality of linear materials are arranged in parallel and integrated. preferable.

In the composite plastically deformed product, the core material and the sheath material may be composed of the same polyolefin, and the sheath material may be composed of another polymer, but preferably, the core material is polyethylene. Alternatively, the first component is a mixture of the polyethylene and another polyolefin, and the sheath material is a second component having a thermoplastic resin other than the first component as a substantially main component. It is preferable to be constituted by a composite stretched product composed of a combination with components.

The first component polyethylene constituting the core material has an intrinsic viscosity (η) of less than 3.5 dl / g, preferably 1.0 dl / g to less than 3.5 dl / g. Particularly, high-density polyethylene is preferable. With polyethylene having an intrinsic viscosity (η) of 3.5 dl / g or more, the extrusion method is limited, and only one stretched product can be obtained per extruder, or the number of production steps increases and productivity decreases. I can not use it. As the other polyolefin of the first component, a homopolymer of an olefin such as polypropylene, polybutene, and poly-4-methylpentene-1, or an olefin copolymer obtained by copolymerizing another α-olefin with the olefin is used. .

When the polyethylene is stretched, it is elastically deformed in proportion to the tensile stress, and the elongation increases accordingly to reach the yield point. Once the yield point is exceeded, the polyethylene begins to develop plastic deformability after the tensile stress has once decreased. After the yield point, the elongation decreases once, reaches the limit of internal strain, and the polyethylene gradually elongates, eventually whitening and breaking.

[0024] The whitening of polyethylene is induced by the addition of various inorganic fillers, thereby inducing shear fracture and facilitating plastic deformation. Various inorganic fillers include glass fiber, talc, mica, calcium carbonate, magnesium hydroxide, alumina, zinc oxide, magnesium oxide, aluminum hydroxide, silica alumina, titanium oxide, calcium oxide, calcium silicate, and basic carbonic acid. Examples include magnesium, carbon fiber, carbon black, and the like.

The second component is preferably a polymer which is heat-fused with the polyethylene of the first component during coextrusion, so as to increase the adhesion to other polymers or to prevent the polymer from being formed by polyethylene. EEA resins, ethylene vinyl alcohol copolymers, vinyl acrylate polymers, EAA resins, low-density or medium-density polyethylenes, EPTs, etc. are exemplified in that they can impart coloring properties.

In the case where a polymer having no heat-fusing property with polyethylene as the first component is used as the second component, the second component is interposed with a polymer having melting properties located at a middle position between the two. Fusion of the first component and the second component can also be achieved. Examples of such a polymer include acrylic resin and nylon.

The composite plastic deformation product used for the shape-maintaining material 3 is basically formed by using a die having an orifice for extruding the first component and an orifice for extruding the second component. It is obtained by extruding the two components and stretching them in a core-sheath state to impart plastic deformation. The cross-sectional shape of the composite stretched article is not particularly limited, as described above, such as a circle, a rectangle, and a combination of a circle and a rectangle. In addition, the first component and the second component of the composite stretched product only need to be at least combined with each other, and the entire component does not necessarily need to have a core-sheath configuration. When the cross-sectional shape of the composite stretched product has a core-sheath structure, the second component may cover at least 50% or more of the surface of the first component as the core material, and the ratio is appropriately determined according to the purpose of use. .

As shown in FIGS. 11 and 12, the plastic deformability of the composite stretched product is evaluated by the bending return angle θ after 10 minutes when the composite stretched product is bent at 180 degrees and 90 degrees. I do. The composite plastically deformed product is provided on condition that the bending return angle θ of the composite stretched product is 20 degrees or less. Therefore, a composite stretched product having a bending return angle θ of more than 20 degrees does not have sufficient plastic deformability, in other words, sufficient free shape retention, so that it does not become a composite plastic deformable product, and a shape maintaining material is not obtained. Cannot be used as 3.

Next, the method for producing a composite plastically deformed product is as follows: a first component, which is polyethylene or a mixture of the polyethylene and another polyolefin, is melted and extruded from one of the orifices; A second component having a thermoplastic resin substantially as a main component is melted and extruded from the other orifice, and the first component and the second component are combined to form a composite unstretched product. The composite stretched article is stretched 16 times or more to impart plastic deformability to give a composite stretched article, and the plastic deformability of the composite stretched article is reduced to 20 degrees or less by 180 ° and 90 ° bending of the composite stretched article. ,Given.

That is, the composite plastically deformed product is manufactured by, for example, a manufacturing apparatus as shown in FIG. The manufacturing apparatus includes an extruder 21 for extruding a first component and a second component, and a stretching device for stretching a composite unstretched product 22 composed of the extruded and combined first component and second component to impart plastic deformability. The apparatus comprises an apparatus 23, an annealing apparatus 24 for performing an annealing treatment on the composite stretched product, and a winding machine 26 for winding the produced composite plastically deformed product 25.

The extruder 21 is provided with a cooling tank 27 for cooling a plurality of unstretched molten resins to obtain a composite unstretched material 22 in parallel with two screw-type extruders 28. A die 29 connected to an extruder 28 via an adapter includes an orifice for extruding the first component and forming a core, and an orifice for extruding the second component and forming a sheath. A conjugate die having a second component that can continuously coat the first component to obtain a composite unstretched product 22 is used. The stretching device 23 has a first heating tank 31 for heating the composite unstretched product 22 and a stretching machine 32 for stretching after a take-up device 30 for taking the composite unstretched product 22. The annealing device 24 has a second heating tank 33 for further heating the composite stretched product, and an annealing machine 34 for annealing.

Then, the composite plastically deformed product 25 is manufactured by the above-described manufacturing apparatus as follows. One extruder 28 extrudes the heated and molten first component from one orifice of the conjugate die 29, and the other extruder 28 extrudes the heated and molten second component from the other orifice of the die 29. Then, both components are made into a sheath-core type, and cooled in a cooling tank 27 to obtain a composite unstretched product 22. The composite unstretched material 22 is taken by a take-off machine 30 of a stretching device 23 and sent to a first heating tank 31, where the composite unstretched material 22 is heated to 60 to 120 ° C., and the speed of a stretching machine 32 is adjusted. It is stretched 7 to 16 times to obtain a composite stretched product. Further, the composite stretched product is sent to the second heating tank 33 of the annealing device 24, the composite stretched product is heated to 60 to 120 ° C., and an annealing process is performed by adjusting the speed of the annealing machine 34 to perform the composite plastic deformation 25 Get. The stretching of the composite unstretched material 22 may be divided into two stages. At this time, the ratio between the first-stage stretching ratio and the second-stage stretching ratio is preferably set to 75:25 to 95: 5 for the first stage: the second stage.

[0033]

[Effect of the invention]

 As described above in detail, according to the present invention, when a part of the face is covered with the mask body, the shape retaining material attached to at least a part of the mask has irregularities on the face, particularly concave parts of the nose and mouth. Deforms according to the convexity, closes the mask body and closes the gap, allowing the mask to perform its original role, the mask body itself does not react to magnetic detectors and metal detectors, and the used mask is incinerated If you do this, you can completely reduce incineration. Also, since no metal is used, there is no accidental damage to the face, no gaps appear between the face and the mask body, and the face can be kept in close contact with the mask. Possible masks can be provided. In addition, the mask of the present invention does not cloud the glasses due to the breath leaking from between the mask and the nose, such as when used at a medical institution during surgery, so that the work can be continued smoothly. On the other hand, a person who is allergic to pollen can have excellent effects such as being able to appropriately suppress the invasion of pollen.

[Brief description of the drawings]

FIG. 1 is a plan view of a shape-maintaining mask showing an embodiment of the present invention.

FIG. 2 is a top view of the shape preserving mask showing the embodiment of the present invention.

FIG. 3 is a perspective view showing a mounted state of the shape preserving mask according to the embodiment of the present invention;

FIG. 4 is a perspective view illustrating a state in which the shape-maintaining mask according to the embodiment of the present invention is manufactured.

FIG. 5 is a perspective view illustrating a state in which the shape-maintaining mask according to the embodiment of the present invention is manufactured.

FIG. 6 is a perspective view showing a state in which the shape-maintaining mask according to the embodiment of the present invention is manufactured.

FIG. 7 is a plan view of a shape-maintaining mask showing another embodiment of the present invention.

FIG. 8 is a plan view of a shape-maintaining mask showing another embodiment of the present invention.

FIG. 9 is a diagram illustrating an example of a cross-sectional shape of a shape holding material.

FIG. 10 is a diagram showing another cross-sectional shape of the shape holding material.

FIG. 11 is a view showing a 180-degree bending return angle of the composite plastic deformation product of the present invention.

FIG. 12 is a view showing a 90-degree bending return angle of the composite plastic deformation product of the present invention.

FIG. 13 is a flow chart showing an apparatus for producing a composite plastic deformation product of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shape preservation type mask 2 Mask main body 3, 3a Shape preservation material 4 Face 5 Gauze ground 6 Hanging string 7 Auxiliary gauze ground 11 One end 11a, 12a Bend 11b, 12b Seam 13 Material 14 Resin 21 Extruder 22 Composite unstretched Object 23 Stretching device 24 Annealing device 25 Composite plastic deformation product 26 Winding machine 27 Cooling tank 28 Extruder 29 Die 30 Pulling machine 31 First heating tank 32 Stretching machine 33 Second heating tank 34 Annealing machine

Claims (5)

[Utility model registration claims] 1. A mask body made of woven fabric, nonwoven fabric, gauze or air-permeable paper is provided with a flammable shape-retaining material on at least a part thereof. A shape-maintaining mask characterized in that it can be held. 2. The shape-maintaining mask according to claim 1, wherein the shape-maintaining material has a basic configuration of a linear shape, a flat shape, or a combination thereof made of an olefin-based resin having plastic deformability. 3. The stretched core / sheath composite comprising a core material comprising a polyolefin-based first component and a second component comprising a polymer identical to or different from the first component as a sheath material. 3. The shape-maintaining mask according to claim 2, wherein said composite stretched product has a plastic deformation of 180 degrees or 90 degrees and a return angle of 20 degrees or less. 4. The shape-maintaining mask according to claim 3, wherein the core and / or sheath of the core-sheath structure composite stretched material is colored in one color or two or more colors. 5. The shape preserving mask according to claim 1, wherein the shape preserving material is formed by integrating a plurality of linear materials in parallel.