WO2017131210A1 - Masque et son procédé de fabrication - Google Patents

Masque et son procédé de fabrication Download PDF

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Publication number
WO2017131210A1
WO2017131210A1 PCT/JP2017/003061 JP2017003061W WO2017131210A1 WO 2017131210 A1 WO2017131210 A1 WO 2017131210A1 JP 2017003061 W JP2017003061 W JP 2017003061W WO 2017131210 A1 WO2017131210 A1 WO 2017131210A1
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Prior art keywords
mask
hot melt
melt material
face
vicinity
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PCT/JP2017/003061
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English (en)
Japanese (ja)
Inventor
高尾　幸博
博士 矢部
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株式会社日本化学研究所
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Application filed by 株式会社日本化学研究所 filed Critical 株式会社日本化学研究所
Priority to JP2017563880A priority Critical patent/JP6905940B2/ja
Priority to CN201780008943.0A priority patent/CN108601413A/zh
Publication of WO2017131210A1 publication Critical patent/WO2017131210A1/fr

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres

Definitions

  • the present invention relates to a mask and a manufacturing method thereof.
  • disposable masks are provided with a piece of resin such as polyethylene or a metal piece at the upper end of the mask body at the upper end of the mask main body so that the upper end is pressed against the nose (Patent Document 1). .
  • resin pieces and metal pieces are also called nose fitters, and disposable masks provided with these pieces are used as commercial products.
  • foamed plastic is attached to a mask nonwoven fabric with an adhesive at the contact portion with the nose as a measure to prevent fogging of glasses.
  • This foamed plastic is also referred to as a nose cushion, and a cushion material that prevents exhalation of breath is pasted and adhered to the mask nonwoven fabric, and exhaled air from the nose and mouth comes out upward from the mask body. Prevents the lens from fogging.
  • the conventional nose fitter alone has insufficient sealing properties on both sides of the nose, sealing properties on both sides of the mask, and cannot be shut off from the outside air.
  • it cannot sufficiently suppress the suction of viruses such as colds, pollen, dust, dust, etc., and even if a person with a cold wears a mask, the scattering of viruses cannot be sufficiently suppressed.
  • exhalation leaked from both sides of the nose since exhalation leaked from both sides of the nose, the effect of anti-fogging on the glasses was also poor.
  • the nose cushion has a problem that the manufacturing process is complicated and the cost is high because a foamed plastic sheet is punched out and attached to the mask body with an adhesive.
  • there was a feeling of pressure on both sides of the nose and a sense of incongruity (foreign object sensation) had to be felt.
  • the conventional mask has a problem that the mask itself is easily displaced up and down because it is difficult to fit the face and the adhesion is not sufficient.
  • Patent Document 6 a highly water-containing gel such as acrylic oxide or gelatin as an adhesive
  • Patent Document 7 double-sided adhesive tape
  • Disposable masks generally include so-called “pleat type” and “three-dimensional type”.
  • pleat type and “three-dimensional type”.
  • Patent Document 8 in a saddle-shaped three-dimensional mask that uses a folded left and right mask body, each left and right mask body is independently spaced apart from a portion corresponding to the center of the nose. It has been proposed to provide two hot melt pressure sensitive adhesives.
  • Patent Document 8 does not disclose details of the hot melt pressure sensitive adhesive.
  • Hot melt pressure sensitive adhesives are only described as thermoplastic polymer based solvent and water free adhesive mixtures, but thermoplastic melt based hot melt pressure sensitive adhesives are generally elastic. Since it is lacking or hard, if an additive is used for imparting adhesiveness, the adhesiveness is too strong, and when the mask is removed, an uncomfortable feeling such as pain may be felt. Further, in the embodiment of Patent Document 8, each of the two hot melt pressure sensitive adhesives provided on each of the left and right mask bodies independently at a distance corresponding to the central portion of the nose is provided with each of them.
  • release paper to cover is affixed, if the adhesive is strong like this, each hot-melt pressure-sensitive adhesive that faces when the mask body on the left and right sides is folded will stick, so the product will be packaged and sold When doing so, release paper is essential.
  • the hot melt material provided linearly in the vicinity of the upper end of the peripheral edge of the mask is independent of the nose as in Patent Document 8.
  • the wire is provided in a single line so as to fit continuously on both sides of the nose.
  • the hot-melt material is required to have bending workability. Similar to the bending of the nose fitter part in which the resin piece and the metal piece are plastically deformed, when the hot melt part made of a hot melt material is folded and the workability is evaluated, it is not always possible to process the same as with the nose fitter part. If the hot-melt material is hard, there is resistance at the time of bending, and even if it can be in close contact with the face, it is difficult to be plastically deformed.
  • the three-dimensional mask is folded and marketed, but the hot melt material is not provided separately at intervals corresponding to the central part of the nose as in Patent Document 8, but is continuously provided on both sides of the nose. If the hot melt material is hard when it is provided in a single line over the left and right mask bodies so as to fit, there is a resistance at the time of folding, and there is a concern about the workability of folding.
  • the nose fitter part of a resin piece or metal piece and a hot melt part are used in combination, the nose fitter part is plastically deformed, but the force to return to it works, and gaps are likely to be generated on both sides of the nose bridge. It is necessary to increase the adhesion between the hot melt part and the skin because it will be damaged. However, when the adhesive force is increased by applying adhesiveness with an additive or the like, the skin feels ugly when the mask itself is removed.
  • the release paper is essential as described above.
  • the release sheet is attached to the outer surface side of the adhesive portion because the hot melt pressure sensitive adhesives stick to each other.
  • a release paper is used, the material cost of the release paper and a process of attaching the release paper are required, which increases the cost.
  • Pleat masks are packaged and sold on top of each other, but when the hot-melt material is highly sticky, the stacked masks are hot-melted just like when a three-dimensional mask is folded. There is concern that the material sticks to it. In this way, disposable masks are folded and stacked and packaged and sold, but after applying a hot melt material and cooling, it can be folded and stacked as it is, and there is no process of pasting release paper and manufacturing process It is desired that it can be simplified.
  • ⁇ Hot melt guns are used to apply hot melt materials.
  • stringing tends to occur in the final application process.
  • the occurrence of stringing impairs workability, and the appearance of the product is impaired when the stringing part remains.
  • the melt viscosity at the temperature of the hot melt material at the time of application is low.
  • the hot melt material must have a melting temperature of 190 ° C. or lower.
  • the present invention has been made in view of the circumstances as described above, and has high sealing performance with the face, glasses are not fogged, adhesion with the face is good, and the mask itself is not easily displaced up and down, and is adhesive. It is an object of the present invention to provide an inexpensive mask with good bending workability and a method for manufacturing the mask, which is not too strong and can hardly feel discomfort such as pain when removing the mask and can omit the release paper.
  • Another object of the present invention is to provide a mask that can suppress suction of viruses such as colds, pollen, dust, dust, etc., and that people who have colds do not scatter viruses, and a method for manufacturing the same.
  • Another object of the present invention is to provide a mask that can suppress stringing during application of a hot melt material, and that can prevent deterioration in workability and product appearance, and a method for manufacturing the same.
  • Another object of the present invention is to provide a mask that has good resin workability and excellent workability even when stringing occurs during application of a hot melt material, and a method for manufacturing the same.
  • the A hardness specified in JIS K6301-1975 is a standard for measuring the hardness of general rubber.
  • the indenter is pushed into the surface of a non-measured object and deformed, and the amount of deformation (indentation depth) is measured and digitized.
  • a durometer spring type rubber hardness tester
  • Fits to the face and has good adhesion does not feel skin pain when removing the mask, bends during use, especially in the range where it touches both sides of the nose Regarding the bending workability of the obtained hot melt material and the fact that the resistance to bending is small and the adhesiveness to the skin does not deteriorate due to the restoring force, attention was paid to the A hardness rather than the adhesiveness studied in Patent Documents 6-8.
  • a hardness within a specified range and moderate softness it is easy to deform along the face shape due to the softness, the fit to the face is improved, and even if the shear shear strength, which is an index of adhesiveness, is reduced, the face It fits well and has good adhesion, so it feels good and adheres well to the face without feeling uncomfortable, especially painful, due to the tackiness of the tackifier, etc. Become.
  • a release paper may be required to prevent adhesion caused by the hot melt material. Absent.
  • the mask of the present invention is provided with a hot melt material that is bonded to a nonwoven fabric in the vicinity of the periphery of the inner surface of the mask and that comes into contact with the face when the mask is attached to the face.
  • the hardness is less than 50.
  • the melt viscosity at 190 ° C. is 180,000 mPa ⁇ s or less, and the hot melt material is characterized by containing a thermoplastic elastomer.
  • the mask manufacturing method of the present invention is the above-described mask manufacturing method, characterized in that a hot melt material is applied to the inner surface of the mask with a hot melt gun.
  • the mask manufacturing method of the present invention is the above-described mask manufacturing method, wherein when the hot melt material is applied to the inner surface of the mask with a hot melt gun, the hot melt material of the hot melt gun is used in the last step of application. After the switch for discharging the liquid is turned off, the discharge nozzle tip of the hot melt gun is instantaneously brought into contact with the inner surface of the mask near the application end of the hot melt material.
  • the wearing sealability with the face is high, the spectacles are hardly fogged, the adhesion with the face is good, the mask itself is not easily displaced up and down, and the adhesiveness is low.
  • the mask without being too strong it is difficult to feel discomfort such as pain, and the release paper can be omitted, and a mask with particularly good folding workability can be obtained at low cost.
  • Use of a thermoplastic elastomer as the hot melt material is suitable for the expression of these effects.
  • the sealing property around the mouth and nostril is further increased, and viruses such as colds and the like Suction of pollen, dust, dust, etc. can be suppressed, and people with colds are less likely to scatter viruses.
  • the melt viscosity at 190 ° C. by setting the melt viscosity at 190 ° C. to a specific range, stringing can be suppressed during application of the hot melt material, and workability and deterioration of the product appearance can be suppressed.
  • the switch for discharging the hot melt material of the hot melt gun is turned off in the last step of the application.
  • the tip of the hot melt gun discharge nozzle is in contact with the inner surface of the mask in the vicinity of the hot melt material application end, so that even if stringing occurs during the application of the hot melt material, deterioration of the appearance can be suppressed and the resin cuts better. Excellent workability.
  • FIGS. 1 to 3 show an embodiment of the mask of the present invention.
  • the mask 1 of the present embodiment shown in FIGS. 1 to 3 includes a mask body 2 for covering a face 21 (for example, around the mouth and nostrils) of the user's face 20 as shown in FIG. 3, and the mask body. 2 and the ear straps 3 and 3 attached in the vicinity of both side ends 4c and 4d.
  • the mask 1 is a so-called “pleated type” which is disposable, and a pleat portion 7 is provided near the center of the inner surface 6 of the mask 1 as shown in FIG.
  • the pleat portion 7 is formed with a plurality of pleat crease portions 7a to 7d that are folded with a predetermined width in the vertical direction of the mask body 2 in the lateral direction.
  • the pleat crease portions 7a to 7d are formed by folding back the mask body 2, and when the pleat portion 7 is expanded by expanding the mask body 2 in the vertical direction, the mask body 2 bulges outward toward the outside. It is comprised so that.
  • the mask body 2 is a laminated body in which the planar shape is a quadrangle and a plurality of nonwoven fabric sheets are overlapped, and the periphery of the overlapped nonwoven fabric sheets is fixed by welding or the like.
  • the inner surface 6 of the mask main body 2 is provided with fixing portions 5a, 5b, 5c, 5d in which the nonwoven fabric sheets that are overlapped are fixed linearly along the upper end 4a, the lower end 4b, and the side ends 4c, 4d. Yes.
  • a resin piece such as polyethylene or a metal piece (nose fitter) that fits the nose 22 may be accommodated inside the nonwoven fabric on the inner surface 6 and the nonwoven fabric on the outer surface.
  • the mask main body 2 includes an outer layer nonwoven fabric sheet disposed on the outside air side and a mouth side inner layer nonwoven fabric sheet in contact with the skin, and has at least one intermediate layer between the outer layer and the inner layer. It is the laminated body which consists of a multilayer nonwoven fabric sheet. A material having air permeability is selected for the outer layer and the inner layer, and a material that functions as a filter is selected for the intermediate layer.
  • the non-woven material constituting the mask body 2 generally known materials can be used as the material of the mask 1.
  • the nonwoven fabric etc. of the synthetic fiber comprised by polyolefin fiber and polyester fiber are mentioned.
  • the core / sheath is made of polypropylene / polyethylene, polyethylene terephthalate / polyethylene, polyethylene terephthalate / low melting point polyethylene terephthalate, polypropylene / polypropylene or other core-sheath composite fiber, polypropylene alone or polyethylene terephthalate alone.
  • the regular fiber comprised by these is used.
  • other nonwoven materials include rayon fibers, nylon fibers, acetate fibers, wool fibers, cotton fibers, urethane fibers, and the like.
  • nonwoven fabric sheet a spunbond nonwoven fabric, a thermal bond nonwoven fabric, a spunlace nonwoven fabric, an air-through nonwoven fabric, a melt blown nonwoven fabric, a needle punched nonwoven fabric, or the like can be used.
  • a spunbond nonwoven fabric a thermal bond nonwoven fabric, a spunlace nonwoven fabric, an air-through nonwoven fabric, a melt blown nonwoven fabric, a needle punched nonwoven fabric, or the like
  • gauze, paper, a moisture-permeable resin sheet, or the like may be used.
  • ear straps 3 and 3 are attached by welding or the like. As shown in FIG. 3, the ear straps 3, 3 can be attached to the face 21 by being hooked on the ears 23, 23 from the left and right sides of the mask body 2.
  • the material of the ear straps 3 and 3 is preferably a stretchable material such as rubber.
  • a hot melt material 10 is provided on the inner surface 6.
  • the hot melt material 10 is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 on the inner surface 6 of the mask body 2.
  • the vicinity of the peripheral edge 4 refers to the periphery of the portion facing the mouth when the mask 1 is mounted on the face 21, particularly the pleat portion 7, the peripheral edge 4 including the upper end 4a, the lower end 4b, and the side ends 4c and 4d.
  • the hot melt material 10 has essential components such as resin, rubber, and elastomer, and can be applied as a coating material to the nonwoven fabric used in the mask body 2.
  • the main component becomes a coating material having appropriate fluidity and viscosity by heating and melting, and after application, the fluid loses fluidity by cooling and becomes a soft elastic body, which is bonded to the nonwoven fabric itself. .
  • the preferable conditions of the hot melt material 10 are that it can be applied with a hot melt gun, can be thickened with an appropriate viscosity, etc., does not penetrate into the nonwoven fabric of the mask body 2 or does not melt the nonwoven fabric, and is safe and hygienic in terms of skin.
  • various materials can be used as the hot melt material 10 as long as they do not contain allergens and the surface easily fits the skin, and satisfy these conditions.
  • the main component of the hot melt material 10 is not particularly limited, and any of resin, rubber, elastomer and the like may be used.
  • the main component of the hot melt material 10 include thermoplastic elastomers, polyolefins, synthetic rubbers, polyamides, polyesters, acrylics, and polyurethanes. These may be used alone or in combination of two or more.
  • Polyolefin-based ethylene / vinyl acetate copolymer (EVA), ethylene / propylene copolymer, ionomer (by making metal ions such as sodium and zinc act on the ethylene / acrylic acid copolymer to form an ion bridge structure) Can also be used.
  • the comonomer is copolymerized and softened by a method of reducing the degree of crystallinity.
  • the VA concentration is 45 to 60% by mass and the crystallinity is lost.
  • Such EVA can also be used, and preferably has a VA concentration of 9 to 46% by mass, more preferably a VA concentration of 19 to 46% by mass.
  • the hot-melt material 10 is characterized by ensuring adhesion even if the shear shear strength is reduced by its lower hardness than adhesiveness. From this point, pay attention to adhesion by flexibility and elasticity. It is important to use a thermoplastic elastomer having rubber elasticity and good workability when melted due to thermoplasticity.
  • tackifier resin for example, lubricant, deodorant, foaming agent, pigment, antioxidant, fragrance, water absorbent resin, A heat stabilizer, light stabilizer, weathering agent, ultraviolet absorber, light stabilizer, reinforcing agent, antistatic agent, antibacterial agent, antifungal agent, dispersant and the like can be blended.
  • examples of the lubricant include silicone oils; hydrocarbon lubricants such as paraffin wax, microwax and polyethylene wax; butyl stearate, monoglyceride stearate, pentaerythritol tetrastearate, stearyl stearate and the like. These may be used alone or in combination of two or more.
  • the deodorant can be used zeolite, generally a generic name of aluminosilicate having a three-dimensional skeleton structure, as a general formula, expressed in xM 2 / n O ⁇ Al 2 O 3 ⁇ ySiO 2 ⁇ zH 2 O
  • M represents an ion capable of ion exchange, and is usually a monovalent or polyvalent metal ion.
  • n is the valence of an ion-exchangeable ion (metal ion).
  • x and y are the metal oxide and silica molar coefficients, respectively, and z is the number of moles of crystal water.
  • natural zeolite and synthetic zeolite can be used regardless of, for example, natural zeolite includes mordenite (mordenite), erionite (molybdenite), clinobutyrolite, chabazite (orthorbite) and the like. Can be mentioned.
  • synthetic zeolite include A-type zeolite, X-type zeolite, Y-type zeolite, L-type zeolite, and omega-type zeolite. These may be used alone or in combination of two or more.
  • thermoplastic elastomer As the thermoplastic elastomer as the main component of the hot melt material 10, a styrene-based elastomer is preferable in consideration of heat resistance and sealing properties due to the elasticity of the elastomer.
  • the styrene elastomer is composed of a styrene polymer block and an elastomer block.
  • the surface hardness is hard, and when it is low, the surface hardness is soft and can be selected from 10 to 50% by mass, preferably 20 to 40% by mass, and more preferably 28 to 33% by mass.
  • Specific examples of styrene block copolymers include styrene-butadiene block copolymers, styrene-butadiene-styrene block copolymers, styrene-isoprene block copolymers, styrene-isoprene-styrene block copolymers, and styrene.
  • thermoplastic elastomer may be used in combination of two or more kinds of triblock copolymer or a mixture with a diblock copolymer.
  • styrene monomer used in the styrene polymer block examples include styrene, t-butylstyrene, ⁇ -methylstyrene, p-methylstyrene, divinylbenzene, 1,1-diphenylstyrene, N, N-diethyl-p-amino. Examples thereof include ethylstyrene and N, N-vinylpyridine. Of these, styrene and ⁇ -methylstyrene are preferable.
  • the elastomer block contains isoprene (I), butadiene (B), ethylene-butylene (EB), ethylene-propylene (EP) or ethylene-ethylene-propylene (EEP).
  • A styrene polymer block
  • B elastomer block
  • ABA type can be used, and one type can be used alone or two or more types can be used as a blend.
  • SEBS type and SEPS type can be preferably used.
  • the styrenic elastomer preferably has a melt flow rate (MFR: [g / 10 min], 200 ° C./5 kg load, (JIS K7210) of 1 to 70, a specific gravity of 0.86 to 0.98, and a solution viscosity (10
  • the mass% toluene solution) is preferably 5 to 2000 mPa ⁇ s (25 ° C.).
  • the main component of the hot melt material 10 is a thermoplastic elastomer
  • the softening agent softens the hot melt material 10 and can impart plasticity and coating processability.
  • softener examples include paraffinic, naphthenic and aromatic process oils; phthalic acid derivatives such as dioctyl phthalate and dibutyl phthalate; white oil; mineral oil; liquid co-oligomer of ethylene and ⁇ -olefin; liquid paraffin Polybutene; low molecular weight (peak top molecular weight of about 400-90000) polyisobutylene; liquid polybutadiene, liquid polyisoprene, liquid poly (isoprene-butadiene) copolymer, liquid poly (styrene-butadiene) copolymer, liquid poly (styrene) -Isoprene) liquid polydienes such as copolymers and hydrogenated products thereof. These may be used alone or in combination of two or more.
  • paraffinic process oil liquid co-oligomer of ethylene and ⁇ -olefin
  • liquid paraffin liquid paraffin
  • liquid polydiene liquid polydiene And hydrogenated products thereof.
  • the content of the softener is preferably 20 to 300 parts by weight, more preferably 50 to 300 parts by weight, and still more preferably 50 to 250 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer. If the softener content is too small, the viscosity is too high to cause lining, and if too much, the softener tends to bleed on the surface of the hot melt material 10.
  • the main component of the hot melt material 10 is a thermoplastic elastomer, an antioxidant, a tackifying resin, an inorganic filler, an amorphous polyalphaolefin, a wax, or the like may be added as an additive other than the main component. it can.
  • the antioxidant can prevent the aging of the hot melt material 10 and improve the tasteless and odorless safety and hygiene.
  • examples of the antioxidant include a phenolic antioxidant, a phosphite antioxidant, a sulfur antioxidant, and an antioxidant of a hydroquinone derivative. These may be used alone or in combination of two or more.
  • the content of the antioxidant is preferably 0.01 to 5 parts by mass, and more preferably 0.1 to 3 parts by mass. If the content of the antioxidant is too small, the deterioration due to heating at the time of manufacturing the hot melt material 10 is severe, and the problem of discoloration or off-flavor tends to occur. Even if the content of the antioxidant exceeds 3 parts by mass, there is almost no effect accompanying an increase in the amount added, and if it exceeds 5 parts by mass, bleeding may occur and the appearance may deteriorate.
  • tackifying resin examples include rosin resins such as gum rosin, tall oil rosin, wood rosin, hydrogenated rosin, disproportionated rosin, polymerized rosin, glycerin esters thereof, and rosin esters such as pentaerythritol ester; ⁇ -pinene Terpene resins such as terpene resins, aromatic terpene resins, hydrogenated terpene resins, terpene phenol resins, etc.
  • rosin resins such as gum rosin, tall oil rosin, wood rosin, hydrogenated rosin, disproportionated rosin, polymerized rosin, glycerin esters thereof, and rosin esters such as pentaerythritol ester
  • ⁇ -pinene Terpene resins such as terpene resins, aromatic terpene resins, hydrogenated terpene resins, terpene phenol resins, etc.
  • hydrogenated aliphatic (C5) petroleum resins (hydrogenated) ) Hydrogen such as aromatic (C9) petroleum resin, (hydrogenated) copolymerized (C5-C9 copolymerized) petroleum resin, (hydrogenated) dicyclopentadiene petroleum resin, alicyclic saturated hydrocarbon resin, etc.
  • Hydrogen such as aromatic (C9) petroleum resin, (hydrogenated) copolymerized (C5-C9 copolymerized) petroleum resin, (hydrogenated) dicyclopentadiene petroleum resin, alicyclic saturated hydrocarbon resin, etc.
  • Petroleum resin which may be added; poly ⁇ -methylstyrene, ⁇ -methylstyrene-styrene copolymer, styrene monomer-aliphatic Styrenic resins such as nomer copolymers, styrene monomers- ⁇ -methylstyrene-aliphatic monomer copolymers, styrene monomers-aromatic monomers (excluding styrene monomers) copolymers; phenolic resins Xylene resin; synthetic resin such as coumarone-indene resin. These may be used alone or in combination of two or more.
  • thermoplastic elastomer composition hydrogenated terpene resins, alicyclic saturated hydrocarbon resins, and (hydrogenated) aliphatic (C5) petroleum resins are preferable.
  • the content is preferably 160 parts by mass or less from the viewpoint of preventing pain when the mask is removed from the face because the adhesive force is too strong, and 110 parts by mass. Part or less is more preferable.
  • the inorganic filler can suppress stringing from the nozzle when the hot melt material 10 is applied, and can further improve the deodorizing effect and the like.
  • the inorganic filler include zeolite, calcium carbonate, talc, carbon black, titanium oxide, silica, clay, barium sulfate, magnesium carbonate, glass fiber, and carbon fiber.
  • the content is preferably 100 parts by mass or less, more preferably 50 parts by mass or less from the viewpoint of preventing the viscosity from being too high and hindering the application of the hot melt material 10. preferable.
  • Amorphous polyalphaolefin improves the adhesion between the hot melt material 10 and the non-woven fabric that is the mask substrate.
  • the content is preferably 100 parts by mass or less, more preferably 80 parts by mass or less from the viewpoint of preventing the compatibility from being deteriorated.
  • wax examples include natural waxes derived from petroleum such as paraffin wax and microcrystalline wax, and synthetic waxes such as Fischer-Tropsch wax and polyethylene wax. These may be used alone or in combination of two or more.
  • the A hardness of the hot melt material 10 is less than 50, preferably 48 or less, and more preferably 30 or less. Although the minimum of A hardness is not specifically limited, One or more are preferable. Here, the A hardness can be measured according to the description of JIS K6301-1975. The A hardness is obtained by using a durometer (spring type rubber hardness tester) that measures the amount of deformation (indentation depth) by pressing an indenter into the surface of a non-measurement object, and measures the amount of deformation (indentation depth).
  • the wearing sealability with the face is high, the glasses are not easily fogged, the adhesion with the face is good, the mask itself is difficult to shift up and down, and the adhesive is not too strong when removing the mask. It is difficult to feel discomfort such as pain, and release paper can be omitted, and a mask with particularly good folding workability can be obtained at low cost.
  • the mask 1 is brought into close contact with the face, the nose fitter portion is bent along the nose 22, but if the hot melt material 10 is too hard, it is difficult to bend, and if the A hardness is less than 50, the hot melt material 10 is also Can be folded easily.
  • a hardness of less than 50 and moderate softness makes it easy to deform along the face shape due to the softness, improving the fit to the face, and even if the shear shear strength, which is an index of adhesiveness, is reduced, the face Fits well and has good adhesion, so it can be attached to the face without feeling a sense of discomfort, especially pain, with the adhesiveness of the tackifier, etc. It becomes.
  • a release paper is not required to prevent adhesion caused by the hot melt material 10.
  • the hot melt material 10 preferably has a shear shear strength measured by pressing a polypropylene (PP) sheet of 450 g / 5 mm or less, more preferably 10 g / 5 mm or more and 300 g / 5 mm or less, and even more preferably less than 100 g / 5 mm. It is.
  • PP polypropylene
  • the shear shear strength was obtained by coating the hot melt material 10 with a width of 5 mm and a length of 150 mm, and after 1 day at room temperature, a polypropylene sheet was pressure-bonded thereon and sheared in the longitudinal direction. Measure shear strength.
  • the polypropylene sheet is not particularly limited as long as it has a flat surface. Among them, a hard sheet can be used.
  • Sekisui Material Solutions Co., Ltd., trade name: Polyceme P8134 Natural can be used as a commercial product.
  • the thickness of the hot melt material 10 is, for example, 1 to 3 mm.
  • a low A hardness improves the nose part bendability, and even with the above shear shear strength, the adhesion is good and the ease of removal (reducing skin pain) is improved. Adhesiveness can be made favorable. Further, even if the masks are stacked after application and cooling, they are not adhered to such an extent that they are not peeled off, and the hot melt materials are not easily stuck together, so that it is not necessary to attach release paper.
  • the melt viscosity of the hot melt material 10 is a value measured with a Brookfield viscometer and is 180,000 mPa ⁇ s or less at 190 ° C., preferably 150,000 mPa ⁇ s or less.
  • the melt viscosity is less than 180,000 mPa ⁇ s
  • the switch that discharges the hot melt material 10 from the hot melt gun in the last step of application After turning OFF, the sharpness at the tip of the discharge nozzle of the hot melt gun is good and it is easy to suppress the occurrence of stringing from the tip of the discharge nozzle.
  • the melting temperature of the hot melt material 10 or the temperature of the discharge nozzle is increased, the base material of the mask 1 is likely to be melted. Therefore, it is necessary to select the melting temperature depending on the material of the mask 1, but for example, made of polypropylene (PP) In the case of the mask 1, it is preferable to apply the hot melt material 10 at a discharge temperature of 190 ° C. or lower.
  • PP polypropylene
  • the hot melt material 10 can form an elastic body without using a drying oven in the normal manufacturing process of the mask 1, the application process of the hot melt material 10 is performed without changing the manufacturing process. Can be easily incorporated into the manufacturing process.
  • the foaming ratio of the hot melt material 10 is preferably 4 times or less, more preferably 1 to 4 times, and even more preferably 2 to 4 times.
  • a foaming agent is used as an additive, or the hot-melt material 10 is heated and melted, and inactive in air, carbon dioxide, nitrogen or the like while being pressurized in a tank.
  • the hot melt-gas mixed melt in a pressurized state may be applied under atmospheric pressure with a hot melt gun or the like by mixing a gas.
  • nitrogen is used as an inert gas. It is preferable to mix gas.
  • the mask 1 of the present embodiment is provided with such a hot melt material 10, when the mask 1 is mounted on the face 21, the hot melt material 10 comes into contact with the face 21 and the mask 1 and the face 21.
  • the gap can be filled.
  • the hot melt material 10 is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 on the inner surface 6 of the mask 1.
  • the hot melt material 10 is linearly provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1.
  • the hot melt material 10 linearly provided in the vicinity of the upper end 4a of the peripheral edge 4 is provided with two upper end thick portions 11 and 11 that fit on both sides of the nose 22 and a constricted portion 12 between them.
  • upper thin portions 14 and 14 are linearly provided toward the side ends 4c and 4d, respectively.
  • the upper-end-side thick portions 11, 11 are provided in the vicinity of the central portion in the vicinity of the upper-end 4 a of the inner surface 6 of the mask body 2, have a thick and bulging shape, and are arranged on the outer side of the pleat portion 7 with the two upper-end-side thick portions 11. , 11 are provided symmetrically.
  • the two upper end thick portions 11 and 11 are formed on the sides of the nose 22 as shown in FIG. Hold it. Thereby, the hot-melt material 10 fits and closely adheres to the vicinity of the nasal column and cheeks.
  • the upper end side thick portions 11, 11 can fill the gap between the mask body 2 and the face 21 generated on both sides of the nose 22 with a thick and bulging shape. . Therefore, the sealing performance with the face 21 is high, and it is possible to prevent the exhalation from leaking from both sides of the nose 22 and fogging of the glasses.
  • constricted portion 12 and the upper-side thin portions 14 and 14 are also fitted in contact with the face 21 on the upper side of the mask 1, and are formed into a linear shape having a smaller thickness than the upper-end thick portions 11 and 11. A gap between the main body 2 and the face 21 can be filled.
  • the thickness of the hot melt material 10 changes according to the size of the gap generated between the mask 1 and the face 21. That is, depending on the size of the gap, the thickness (application amount) when the hot melt material 10 is applied as a coating material can be partially changed. Thereby, mounting
  • a general hot melt gun can be used for applying the hot melt material 10 as a coating material. For example, by moving the hot melt gun for coating to an arbitrary position on the mask 1 with the X-axis, Y-axis, and Z-axis by a three-axis movable robot, or arbitrarily changing the moving speed of the hot-melt gun depending on the position
  • the coating amount can be changed for each position relative to the inner surface 6 of the mask body 2. Thereby, it can apply
  • FIG. 4 is a flowchart showing an example of a process for manufacturing the mask 1 of the present embodiment.
  • the flowchart in FIG. 4 is based on the manufacturing process of a general pleated disposable mask.
  • a plurality of non-woven fabrics used for the mask body 2 are continuously unwound from a long sheet-like non-woven fabric, and are laminated and bonded together (S1).
  • a resin piece such as polyethylene that fits the nose 22 or a metal piece (nose fitter) is joined to the laminated nonwoven fabric, and the nonwoven fabric is turned over so that the resin piece or metal piece contacts the nose 22 of the mask 1. Is folded to the upper end 4a side (S2).
  • pleats are formed in the lateral direction using a pleating machine (S3).
  • the grooves forming the pleats are folded by the metal fittings of the pleating machine, and further pressed and strongly folded.
  • edge covering (S4) and cut cutting (S5) of the upper end 4a and the lower end 4b of the mask body 2, edge covering (S6), cut cutting (S7), edge processing (S7) on both sides 4c and 4d of the mask body 2 Through each step of S8,.
  • the periphery of the mask body 2 made of a laminated body in which a plurality of nonwoven fabric sheets are superimposed is fixed and reinforced, and the nonwoven fabric laminated body is cut into the shape of the mask body 2.
  • the hot melt material 10 is applied to the mask body 2 while cutting the ear straps 3 and 3 (S10).
  • Application of the hot melt material 10 to the inner surface 6 of the mask body 2 (S9) can be performed, for example, immediately before or immediately after the step S10 of attaching the ear straps 3 and 3.
  • the hot melt material 10 is applied by applying the hot melt material 10 as a coating material to the inner surface 6 of the mask body 2 with a hot melt gun.
  • the application step S9 of the hot melt material 10 can be applied to the inner surface 6 after the ear straps 3 and 3 are welded and a normal mask is once manufactured (R2), but the ear straps 3 and 3 are welded.
  • Application in the immediately preceding process (R1) is desirable from the standpoint that coating on the production line of the mask 1 is easy and that the coating apparatus can be easily incorporated.
  • the manufactured mask 1 is shipped as a product after inspection (S11) and boxing (S12) such as dirt, distortion, and ear strap welding failure.
  • the mask 1 of the present embodiment described above by setting the A hardness of the hot melt material 10 to less than 50, the wearing sealability with the face is high, the glasses are not easily fogged, and the adhesion with the face is good.
  • the mask itself is difficult to shift up and down, and the adhesiveness is not too strong, and it is difficult to feel discomfort such as pain when removing the mask, so that the release paper can be omitted, and a mask with particularly good folding workability can be obtained at low cost.
  • Use of a thermoplastic elastomer as the hot-melt material 10 is suitable for manifesting these effects.
  • the hot melt material 10 is provided which is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 and comes into contact with the face 21 when the mask 1 is attached to the face 21.
  • the hot melt material 10 is linearly provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1. In particular, it is continuously provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 in a range where it contacts both sides of the nose 22.
  • the wearing and sealing performance with the face 21 is high, and the breathing that leaks from a place close to both sides of the nose 22 does not cause fogging of the glasses in winter, and the troublesomeness caused by fogging of the glasses is eliminated. Furthermore, the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • the edge surface is hard, and if it is rubbed at a portion that contacts the face 21, it may be irritated or painful for a person sensitive to the skin, but the hot melt material 10 applied to the inner surface 6 Since the surface touches the skin directly, it is difficult to rub the surface of the skin with the surface or edge of the nonwoven fabric.
  • FIGS. 5A to 5D are views for explaining an embodiment of the mask manufacturing method of the present invention.
  • the switch for discharging the hot melt material 10 of the hot melt gun 30 is turned off in the last step of application. Thereafter, the discharge nozzle tip 30 a of the hot melt gun 30 is brought into contact with the inner surface 6 of the mask 1 in the vicinity of the application end of the hot melt material 10.
  • the hot-melt material 10 heated and melted is applied to the inner surface 6 of the mask body 2 and applied at the last step of application with the hot-melt gun 30.
  • the switch for discharging the hot melt material 10 of the hot melt gun 30 is turned off.
  • the stringing 10a of the hot-melt material 10 may occur at the discharge nozzle tip 30a.
  • the hot melt gun 30 is not shown
  • the application end of the hot melt material 10 in FIG. 5A to FIG. 5D, the switch
  • the discharge nozzle tip 30a is instantaneously brought into contact with the non-woven fabric on the inner surface 6 of the mask body 2 at a position B in the vicinity of the position A.
  • the vicinity of the application end of the hot melt material 10 is, for example, a range in which the distance from the application end (position A) to the position B is within 7 mm.
  • the hot melt gun 30 is not limited to being discharged and applied to the mask body 2 downward, but may be applied upward by being discharged upward to the mask body 2.
  • the inner surface of the mask main body 2 is located at the position B near the application end of the hot melt material 10 even if the stringing 10a occurs at the discharge nozzle tip 30a.
  • the stringing 10a can be made to adhere by contacting the specific location of the nonwoven fabric 6, and the appearance of the mask 1 can be improved. Furthermore, by bringing the discharge nozzle tip 30a into contact with the nonwoven fabric of the inner surface 6 of the mask body 2, the stringing 10a is removed from the discharge nozzle tip 30a, so that the discharge nozzle tip 30a can always be cleaned and the nozzle tip can be cleaned. Build-up (hot melt deposition) can be prevented.
  • (Third embodiment) 6 to 8 show another embodiment of the mask of the present invention.
  • symbol is attached
  • two upper end thick portions 11 and 11 that fit on both sides of the nose 22 and a constricted portion 12 between them are provided in the vicinity of the upper end 4 a of the peripheral edge 4.
  • upper thin portions 14, 14 are linearly provided toward the side ends 4 c, 4 d, respectively.
  • the upper end thick portions 11 and 11, the constricted portion 12, the upper end thin portions 14 and 14 are centered on the constricted portion 12, and the upper end thick portion 11 and the upper end thin portion 14 are slightly inclined from both sides. It has a mountain shape when viewed from above.
  • the lower end side thin portion 15 that fits the jaw side of the face 21 is continuous from the lower ends of the side end side thick portions 13 and 13 and is inclined slightly downward. It is provided in the shape.
  • the upper-end-side thick portions 11 and 11 are provided in the vicinity of the central portion in the vicinity of the upper end 4a of the inner surface 6 of the mask body 2, and have a swelled shape with a thickness so as to be slightly inclined toward the side ends 4c and 4d.
  • Two upper-end-side thick portions 11, 11 are provided on the outer side of 7 so as to be symmetric.
  • the upper end side thick portions 11, 11 can fill the gap between the mask body 2 and the face 21 generated on both sides of the nose 22 with a thick and bulging shape. . Therefore, the sealing performance with the face 21 is high, and it is possible to prevent the exhalation from leaking from both sides of the nose 22 and fogging of the glasses. Moreover, the suction
  • constricted portion 12 and the upper-side thin portions 14 and 14 are also fitted in contact with the face 21 on the upper side of the mask 1, and are formed into a linear shape having a smaller thickness than the upper-end thick portions 11 and 11. A gap between the main body 2 and the face 21 can be closed.
  • the side end side thick portions 13 and 13 are fitted to both cheek sides of the face 21 when the mask 1 is attached to the face 21, as shown in FIG. And the face 21 can be filled. Therefore, the sealing performance with the face 21 is high, and suction of viruses such as colds, pollen, dust, dust and the like from the side as well as the upper side of the mask 1 can be suppressed.
  • the lower end side thin portion 15 also fits in contact with the jaw side of the face 21 on the lower side of the mask 1, and is a line having a smaller thickness than the upper end side thick portions 11, 11 and the side end side thick portions 13, 13. By forming the shape, the gap between the mask body 2 and the face 21 can be filled.
  • the thickness of the hot melt material 10 changes according to the size of the gap generated between the mask 1 and the face 21. That is, depending on the size of the gap, the thickness (application amount) when the hot melt material 10 is applied as a coating material can be partially changed. Thereby, mounting
  • the mask 1 of the present embodiment is a pleated mask 1, and the hot melt material 10 (side end side thick portions 13 and 13) provided linearly in the vicinity of the side ends 4c and 4d is a pleat fold portion 7a. It is provided not to cross ⁇ 7d.
  • “do not cross” means that the pleat crease portions 7a to 7d are formed by folding back the mask body 2, and when the mask body 2 is expanded in the vertical direction and the pleat portion 7 is expanded, the mask body 2 Is formed so as not to cross the pleat folds 7a to 7d as long as the mask main body 2 does not hinder the outward expansion.
  • the hot melt material 10 is allowed to overlap the side ends 4c and 4d of the pleat folds 7a to 7d as long as the mask body 2 does not hinder the outward expansion of the mask body 2.
  • the hot melt material 10 when applied as a coating material, it is coated with an application pattern that avoids application across the adjacent pleat crease portions 7a to 7d. Thereby, when the pleat part 7 is expanded, it is possible to prevent the pleat part 7 from spreading.
  • the hot melt material 10 can be applied to the mask 1 of the present embodiment using a hot melt gun, as in the first embodiment.
  • a hot melt gun for example, by moving the hot melt gun for coating to an arbitrary position on the mask 1 with the X-axis, Y-axis, and Z-axis by a three-axis movable robot, or arbitrarily changing the moving speed of the hot-melt gun depending on the position
  • the coating amount can be changed for each position relative to the inner surface 6 of the mask body 2.
  • thickness and shape are changed according to each position of upper end side thick parts 11, 11, constricted part 12, side end side thick parts 13, 13, upper end side thin parts 14, 14, and lower end side thin part 15. Can be applied three-dimensionally.
  • the mask 1 of the present embodiment described above by setting the A hardness of the hot melt material 10 to less than 50, the wearing sealability with the face is high, the glasses are not easily fogged, and the adhesion with the face is good.
  • the mask itself is difficult to shift up and down, and the adhesiveness is not too strong, and it is difficult to feel discomfort such as pain when removing the mask, so that the release paper can be omitted, and a mask with particularly good folding workability can be obtained at low cost.
  • Use of a thermoplastic elastomer as the hot-melt material 10 is suitable for manifesting these effects.
  • the hot melt material 10 is provided which is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 and comes into contact with the face 21 when the mask 1 is attached to the face 21. .
  • it is continuously provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 in a range where it contacts both sides of the nose 22.
  • the hot melt material 10 is provided in a linear form at least near the upper end 4a and near the side edges 4c and 4d in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1. Therefore, the gap between the mounting portion and the face 21 can be made as small as possible.
  • the sealing performance with the face 21 is high, and the breathing that leaks out from both sides of the nose 22 prevents the glasses from being fogged, especially in winter, so that the troublesomeness caused by the fogging of the glasses is eliminated.
  • the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • the edge surface is hard, and if it is rubbed at a portion that contacts the face 21, it may be irritated or painful for a person sensitive to the skin, but the hot melt material 10 applied to the inner surface 6 Since the surface touches the skin directly, it is difficult to rub the surface of the skin with the surface or edge of the nonwoven fabric.
  • FIG. 9 shows another embodiment of the mask of the present invention.
  • symbol is attached
  • the hot melt material 10 is linearly provided in the vicinity of the upper end 4a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1.
  • the upper end thick portions 11 and 11, the constricted portion 12, the upper end thin portions 14 and 14 are centered on the constricted portion 12, and the upper end thick portion 11 and the upper end thin portion 14 are slightly inclined from both sides. It has a mountain shape when viewed from above.
  • the upper-end-side thick portions 11 and 11 are provided in the vicinity of the central portion in the vicinity of the upper end 4a of the inner surface 6 of the mask body 2, and have a swelled shape with a thickness so as to be slightly inclined toward the side ends 4c and 4d.
  • Two upper-end-side thick portions 11, 11 are provided on the outer side of 7 so as to be symmetric.
  • the mask 1 of the present embodiment described above by setting the A hardness of the hot melt material 10 to less than 50, the wearing sealability with the face is high, the glasses are not easily fogged, and the adhesion with the face is good.
  • the mask itself is difficult to shift up and down, and the adhesiveness is not too strong, and it is difficult to feel discomfort such as pain when removing the mask, so that the release paper can be omitted, and a mask with particularly good folding workability can be obtained at low cost.
  • Use of a thermoplastic elastomer as the hot-melt material 10 is suitable for manifesting these effects.
  • the hot melt material 10 is provided which is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 and comes into contact with the face 21 when the mask 1 is attached to the face 21.
  • the hot melt material 10 is linearly provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1. In particular, it is continuously provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 in a range where it contacts both sides of the nose 22.
  • the wearing and sealing performance with the face 21 is high, and the breathing that leaks from a place close to both sides of the nose 22 does not cause fogging of the glasses in winter, and the troublesomeness caused by fogging of the glasses is eliminated. Furthermore, the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • the edge surface is hard, and if it is rubbed at a portion that contacts the face 21, it may be irritated or painful for a person sensitive to the skin, but the hot melt material 10 applied to the inner surface 6 Since the surface touches the skin directly, it is difficult to rub the surface of the skin with the surface or edge of the nonwoven fabric.
  • FIG. 10 shows another embodiment of the mask of the present invention.
  • symbol is attached
  • the hot melt material 10 is linearly provided in the vicinity of the upper end 4a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1.
  • the hot melt material 10 forms a straight line having a uniform width and a uniform thickness as a whole in parallel with the vicinity of the upper end 4a of the mask 1.
  • the hot melt material 10 is provided in substantially the entire range along the upper end 4a from the vicinity of the side end 4c of the inner surface 6 to the vicinity of the side end 4d, that is, from the vicinity of the fixing portion 5c to the vicinity of the fixing portion 5d.
  • the hot melt material 10 sandwiches both sides of the nose 22 as in the first embodiment.
  • the hot-melt material 10 fits and closely adheres to the vicinity of the nasal column and cheeks.
  • the mask 1 can be brought into close contact with the face 21 with a slight adhesive force, so that the gap between the face 21 and the mask body 2 is reduced.
  • the space between the face 21 can be filled.
  • the thickness is partially changed so that the mask 1 is attached to the face 20. If the thickness of the hot melt material 10 is changed according to the size of the gap generated between the face 21 and the face 21, it is possible to further improve the wearing sealing performance with the face 21 as in the present embodiment. Even if the hot-melt material 10 has a linear shape with a uniform width and a uniform thickness, it is possible to ensure a tight seal with the face 21 and to prevent the exhalation from leaking from both sides of the nose 22 and clouding of the glasses. Furthermore, the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down. Further, in this case, since it is a simple linear shape, the production speed can be increased as compared with the first, third, and fourth embodiments.
  • FIG. 11 is a modification of the present embodiment.
  • This mask 1 is similar to FIG. 10 in that the hot melt material 10 is linearly provided in the vicinity of the upper end 4a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1, and in the entire range along the upper end 4a.
  • the hot melt material 10 is provided only in the range including the central portion that contacts the nose 22.
  • the hot-melt material 10 provided in the central portion in contact with the nose 22 can secure the sealing with the face 21, and the exhalation leaks from both sides of the nose 22 and the glasses become cloudy. Can be prevented.
  • the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • FIG. 12 shows another embodiment of the mask of the present invention.
  • symbol is attached
  • two hot melt materials 10 are linearly provided in the vicinity of the upper end 4a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 and parallel to each other.
  • the two hot melt materials 10 form a straight line having a uniform width and a uniform thickness as a whole in parallel with the vicinity of the upper end 4a of the mask 1.
  • the two hot melt materials 10 sandwich both sides of the nose 22 as in the first embodiment.
  • the two hot-melt materials 10 fit and closely adhere to the vicinity of the nasal column and cheeks.
  • the mask 1 can be brought into close contact with the face 21 with a slight adhesive force, so the gap between the face 21 and the mask body 2 is reduced.
  • the space between the mask 1 and the face 21 can be filled.
  • the thickness is partially changed so that the mask 1 is attached to the face 20. If the thickness of the hot melt material 10 is changed according to the size of the gap generated between the face 21 and the face 21, it is possible to further improve the wearing sealing performance with the face 21 as in the present embodiment. Even if the hot-melt material 10 has a linear shape with a uniform width and a uniform thickness, it is possible to ensure a tight seal with the face 21 and to prevent the exhalation from leaking from both sides of the nose 22 and clouding of the glasses. Furthermore, the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • FIG. 13 shows another embodiment of the mask of the present invention.
  • symbol is attached
  • the mask 1 of this embodiment is a so-called disposable “three-dimensional”, and has mask main bodies 2a and 2b on the left and right sides from the central portion, and the mask main bodies 2a and 2b can be folded using the central portion as a fold. It is said that.
  • the left and right mask bodies 2a and 2b in a folded state are spread as shown in FIG. 13, a bowl-shaped three-dimensional shape is obtained.
  • the mask 1 includes a mask body 2 composed of left and right mask bodies 2a and 2b, and ear hooks 30 and 30 attached in the vicinity of both side ends 4c and 4d of the mask body 2.
  • the inner surface 6 of the mask body 2 is provided with a hot melt material 10 linearly along the vicinity of the upper end 4a, the lower end 4b, and the side ends 4c and 4d.
  • the mask 1 of the present embodiment by setting the A hardness of the hot melt material 10 to less than 50, the wearing sealability with the face is high, the glasses are not easily fogged, the adhesion with the face is good, and the mask itself is good. It is difficult to shift up and down, and the adhesiveness is not too strong. When removing the mask, it is difficult to feel discomfort such as pain, and the release paper can be omitted, and a mask with particularly good folding workability can be obtained at a low cost.
  • Use of a thermoplastic elastomer as the hot-melt material 10 is suitable for manifesting these effects.
  • the hot melt material 10 is provided in a single linear shape across the left and right mask bodies 2a, 2b so as to continuously fit on both sides of the nose 22, the A hardness of the hot melt material 10 is less than 50. Therefore, there is little resistance at the time of bending and the processability of folding is favorable.
  • the three-dimensional mask 1 is usually packaged and sold with the mask bodies 2a and 2b of the mask 1 folded at the center, but if the A hardness is less than 50, the hot melt material 10 can be easily obtained. Can be folded.
  • the softness easily deforms along the face shape, thereby improving the fit to the face and reducing the shear shear strength, which is also a stickiness index.
  • the hot melt material 10 is provided which is bonded to the nonwoven fabric in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 and comes into contact with the face 21 when the mask 1 is attached to the face 21. .
  • it is continuously provided in the vicinity of the upper end 4 a in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1 in a range where it contacts both sides of the nose 22.
  • the hot melt material 10 is linearly provided over the entire circumference at least near the upper edge 4a, near the lower end 4b, and near the side edges 4c and 4d in the vicinity of the peripheral edge 4 of the inner surface 6 of the mask 1.
  • the gap between the mounting portion and the face 21 can be made as small as possible. Therefore, it is possible to significantly reduce the risk of sucking a cold virus, pollen, dust, dust, etc. from the gap, and the risk of a person having a cold scattering the virus.
  • the sealing performance with the face 21 is high, and the breathing that leaks out from both sides of the nose 22 prevents the glasses from being fogged, especially in winter, so that the troublesomeness caused by the fogging of the glasses is eliminated.
  • the adhesiveness with the face 21 is good and the mask 1 itself is not easily displaced up and down.
  • the pleated and three-dimensional disposable mask 1 is shown as an example, but the present invention can be applied to other masks.
  • the shape and thickness of the hot melt material 10 in each part of the inner surface 6 of the mask main body 2 can be appropriately determined in consideration of the sealing performance of the gap between the mask 1 and the face 21, for example, sealing It is possible to increase the thickness of the weak part.
  • Example 1 As a hot melt material, synthetic rubber hot melt adhesive “Imelt PA-14B (melt viscosity at 170 ° C .: 1600 mPa ⁇ s)” marketed by Daihyo Co., Ltd. is melted at 170 ° C. to form a hot melt gun. Then, it was applied to the inner surface of a commercially available pleated mask to produce a mask as shown in FIG.
  • Example 2 As a hot melt material, a synthetic rubber hot melt adhesive “Imelt PA-41 (melt viscosity at 170 ° C .: 1700 mPa ⁇ s)” commercially available from Daihyo Co., Ltd. is melted at 170 ° C. to form a hot melt gun. Then, it was applied to the inner surface of a commercially available pleated mask to produce a mask as shown in FIG.
  • Thermoplastic elastomer A SEBS, styrene content 30%, MFR (g / 10 min) (230 ° C./5 kg): 5, specific gravity 0.91, 10% toluene solution viscosity (mPa ⁇ s, 25 ° C.): 30
  • Thermoplastic elastomer B SEBS, styrene content 31%, MFR (g / 10 min) (230 ° C./2.16 kg): ⁇ 0.1, specific gravity 0.91, 10% viscosity in toluene solution (mPa ⁇ s, 30 ° C): 40
  • Thermoplastic elastomer C SEPS, styrene content 30%, MFR (g / 10 minutes) (230 ° C./2.16 kg): 70, specific gravity 0.91, 15% toluene solution viscosity (mPa ⁇ s, 30 ° C.): 25 Therm
  • the hot melt part was folded in the same manner as the bending of the nose fitter part, which is commonly used for the mask coated product, and the workability was evaluated.
  • ⁇ can be processed without problems, ⁇ is resistant when folded but easy to process, ⁇ is hard and difficult to bend, and ⁇ is too hard to bend very difficult Things were evaluated as x.
  • good is evaluated as ⁇
  • the fit is inferior from the beginning of contact with the face, or it is not sustained even after being in close contact and evaluated as ⁇ . did. The results are shown in Table 1.
  • the mask nose fitter bends easily and fits to the face.
  • the A hardness is 50 or more, there is resistance at the time of bending, and it can be in close contact with the face once.
  • the adhesiveness to the skin is reduced by the restoring force.
  • the A hardness of the hot melt material when it is less than 50, both the bending workability and the fit with the face can be satisfied, and when it is 30 or less, the adhesion to the skin is good.
  • the adhesion strength is generally measured as peel strength such as T peel, but when measured as peel strength, the measured value is small and difficult to measure. Therefore, the shear strength was measured as the adhesion strength.
  • the adhesive strength is 5 mm wide and 150 mm long coated with hot melt material, and after 1 day at room temperature, a polypropylene (PP) sheet (manufactured by Sekisui Material Solutions Co., Ltd., trade name: Polyceme P8134 Natural, (Dimensions 950 ⁇ 1000 ⁇ thickness 0.2 mm and cut into a 10 mm-wide strip) were pressure-bonded, and the shear shear strength in the length direction was measured to obtain the adhesion strength.
  • PP polypropylene
  • Table 2 shows the evaluation results of shear shear strength (adhesion strength) and ease of mask removal (skin pain).
  • the ease of removal of the mask attached to the face is as shown in Table 2, and if it is larger than 450 g / 5 mm, the skin will be pulled during removal and the skin will feel painful. Therefore, the adhesion strength is less than 450 g / 5 mm. preferable. Whether or not the skin feels tension and pain is different depending on whether it is male or female, and the feeling varies depending on the person. Therefore, it is more preferably less than 100 g / 5 mm in that the skin is difficult to feel tension and pain. [Bleed] The hot melt material was discharged onto the paper surface and left for 30 days in a room temperature atmosphere, and the surface of the molded product was visually observed to check for bleed out.
  • the bleed out is a phenomenon in which a part of the blend in the hot melt material oozes out on the surface of the molded product and was evaluated according to the following criteria.
  • ⁇ There is no change in the appearance of the surface of the molded product, and there is no oily bleeding.
  • ⁇ Although there is no change in the appearance of the surface of the molded product, oily oozing is slightly felt.
  • X An oil-like thing oozes out on the surface of the molded product and becomes sticky.
  • Example 11 to 16 The evaluation results for Examples 11 to 16 are shown in Table 2.
  • the softening agent exceeds 300 parts by mass with respect to 100 parts by mass of the thermoplastic elastomer, the softening agent tends to bleed on the surface of the hot melt material.
  • Table 1 and Table 2 As hot melt materials, the same manufacturing method as in Example 1 was applied to the inner surface of a pleated mask that was melted at 190 ° C. and marketed with a hot melt gun. Then, a mask as shown in FIG. 6 was manufactured.
  • the viscosity at a speed of 20 rpm at 190 ° C. was measured with a Brookfield viscometer, and the relationship with the ease of sharpening of the hot melt material at the tip of the discharge nozzle (hardness of stringing) was evaluated.
  • the evaluation was evaluated as ⁇ , where the sharpness of the hot-melt material at the nozzle tip was particularly good, ⁇ , where it was good, ⁇ , where slight stringing occurred, and x, where stringing occurred significantly.
  • the results are shown in Tables 1 and 2.
  • melt viscosity exceeds 180,000 mPa ⁇ s, the sharpness at the tip of the discharge nozzle is reduced, and stringing tends to occur from the tip of the discharge nozzle. Therefore, the melt viscosity is preferably 180,000 mPa ⁇ s or less. It was.
  • the hot melt material 10 is preferably applied at a discharge temperature of 190 ° C. or lower. Therefore, if the melt viscosity at 190 ° C. is 180,000 mPa ⁇ s or less, the nozzle breakage can be improved by appropriately adjusting the discharge temperature of the hot melt material 10.
  • Example 28 Using a hot melt material having a melt viscosity at 190 ° C. of 182000 mPa ⁇ s, the same manufacturing method as in Example 1 was applied to the inner surface of a pleated mask that was melted at 190 ° C. and marketed with a hot melt gun. A mask as shown in FIG. 6 was manufactured.
  • the switch for discharging the hot melt material from the hot melt gun was turned off, and then the tip of the discharge nozzle was brought into contact with the mask nonwoven fabric near the application end of the hot melt material. Even if stringing occurs at the tip of the discharge nozzle, the threaded part can be attached by contacting a specific part of the mask nonwoven fabric near the application end of the hot melt material, and at the same time the tip of the discharge nozzle is clean. I was able to.
  • the application pattern of the hot melt material is the application pattern shown in FIG. 6, but the present invention is not limited to this application pattern and does not necessarily cover the entire periphery in the vicinity of the peripheral edge of the mask inner surface. There is no need, for example, when emphasizing only the prevention of fogging of the glasses and the prevention of displacement of the mask, as shown in FIG. 1 and FIGS. Needless to say, it may be applied only.
  • Example 29> The same hot melt material as in Example 12 was used, and the melt was melted at 160 ° C., and a commercially available nitrogen gas mixed melting applicator was used to mix the nitrogen gas into a uniform state.
  • a mask as shown in FIG. 11 was manufactured by applying with a gun.
  • Coating was performed with foaming ratios of 2 times, 3 times, 4 times, and 5 times, respectively, and masks with four different magnifications were manufactured.
  • Table 4 shows the results of the fit with the face when the mask is worn and the restoring property of the hot melt material. The evaluation was good as ⁇ , and the one slightly lower than that was evaluated as ⁇ .
  • the contact portion with the face is more easily deformed along the shape and the fit is improved.However, if the foaming ratio is too high, the unevenness of the hot melt surface becomes significant. Since it has low regenerative properties, it tends to break when discharged from a hot melt gun, and defects such as intermittent application are likely to occur.
  • the preferred magnification is 2 to 4 times from the viewpoint of the property and the appearance.
  • Example 30 A patch test of the hot-melt material used for the mask was performed by the following method, and the safety when the hot-melt material contacted the skin was confirmed. 1. Test method 1) After bathing, wipe off the water well and dry it, and the rounded convex side of the hot-melt material molded into a sealant material (16mm ⁇ circle) inside the upper arm (soft part of the skin) is predetermined on the skin surface Secure with band-aid tape. 2) Leave it until 24 hours have passed and check whether itching or redness has occurred.
  • composition of the subjects is as follows. Subjects: 36 male / female ratio: 15 males and 21 females Age structure of subjects 60 years or older 4 people 55-59 years 3 people 45-49 years 6 people 35-39 years 4 people 25-29 years 4 people 20 to 24 years old 3 people 15 to 19 years old 4 people 10 years old or younger 2 people Materials used 1)
  • Example 5 Size: 16 mm ⁇ ⁇ 2.7 mm thickness Test results No abnormalities such as itching and redness of the skin were observed in all 36 subjects.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un masque peu coûteux et son procédé de fabrication, le masque lui-même ayant un bon ajustement et une bonne étanchéité sur le visage, étant peu enclin à créer de la buée sur des lunettes, et ayant une bonne adhérence au visage, étant peu enclin à être déplacé verticalement, une adhérence n'étant pas suffisamment forte pour qu'une douleur ou une autre gêne soit subie lorsque le masque est retiré, l'élimination de papier antiadhésif étant également possible, etc., en particulier le masque ayant une bonne maniabilité de pliage ; et un masque et son procédé de fabrication dans lequel le caractère filandreux peut être réduit au minimum lorsqu'un matériau thermofusible est appliqué, et la réduction d'aptitude au traitement et d'apparence de produit peuvent être réduites au minimum. Ce masque (1) est caractérisé en ce qu'il comprend un matériau thermofusible (10) qui est amené à adhérer à un non-tissé autour du bord périphérique (4) de la surface interne de masque (6), le matériau thermofusible (10) étant en contact avec le visage (21) lorsque le masque (1) est monté sur le visage (21), et la dureté A du matériau thermofusible (10) étant inférieure à 50. En outre, le matériau thermofusible (10) est caractérisé en ce qu'il contient un élastomère thermoplastique, et en ce qu'il a une viscosité à l'état fondu de 180 000 mPa∙s ou moins à 190 °C.
PCT/JP2017/003061 2016-01-28 2017-01-27 Masque et son procédé de fabrication WO2017131210A1 (fr)

Priority Applications (2)

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JP2017563880A JP6905940B2 (ja) 2016-01-28 2017-01-27 マスクとその製造方法
CN201780008943.0A CN108601413A (zh) 2016-01-28 2017-01-27 口罩及其制造方法

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JP2016014695 2016-01-28
JP2016-014695 2016-01-28

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Cited By (6)

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JP2019002081A (ja) * 2017-06-13 2019-01-10 サンエムパッケージ 株式会社 マスク及びマスクの製造方法
WO2019033515A1 (fr) * 2017-08-15 2019-02-21 深中海医疗用品（深圳）有限公司 Masque de protection jetable
WO2020090011A1 (fr) * 2018-10-30 2020-05-07 エスパック株式会社 Accessoire d'humidification de cavité buccale et de zone périorale
EP3824955A1 (fr) * 2019-11-18 2021-05-26 Yung Shun Chiu Masque
WO2021234976A1 (fr) * 2020-05-21 2021-11-25 知子 大塚 Joint de fixation pour un masque et masque comprenant un joint de fixation pour un masque
JP7329283B1 (ja) * 2022-11-07 2023-08-18 武彦 國枝 マスク

Families Citing this family (2)

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CN209202201U (zh) * 2018-11-20 2019-08-06 华新医材股份有限公司 一种新气密防护口罩
CN112538765A (zh) * 2020-11-24 2021-03-23 佛山市顺德区中辐环保科技有限公司 杀菌、除病毒功能的无纺布及制作方法

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CN201658763U (zh) * 2010-01-27 2010-12-01 闫嘉明 一种过滤式口罩
CN203555199U (zh) * 2013-07-12 2014-04-23 邓美生 一种口罩
JP3188156U (ja) * 2013-10-21 2014-01-09 牧野 長生 衛生マスク

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JPH0924323A (ja) * 1995-07-10 1997-01-28 Sanyo Electric Co Ltd 塗布方法及び塗布装置
JP2004313397A (ja) * 2003-04-15 2004-11-11 Meisei Sansho Kk 衛生マスク
JP2008220528A (ja) * 2007-03-09 2008-09-25 Uni Charm Corp マスク、マスク用被着部材
WO2014077258A1 (fr) * 2012-11-15 2014-05-22 出光興産株式会社 Polymère à base de propylène et adhésif thermofusible
JP2015009151A (ja) * 2013-07-02 2015-01-19 メイ−シェン テン 医療用フェースマスク

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019002081A (ja) * 2017-06-13 2019-01-10 サンエムパッケージ 株式会社 マスク及びマスクの製造方法
WO2019033515A1 (fr) * 2017-08-15 2019-02-21 深中海医疗用品（深圳）有限公司 Masque de protection jetable
WO2020090011A1 (fr) * 2018-10-30 2020-05-07 エスパック株式会社 Accessoire d'humidification de cavité buccale et de zone périorale
JPWO2020090011A1 (ja) * 2018-10-30 2021-10-21 エスパック株式会社 口腔・口周り保湿具
EP3824955A1 (fr) * 2019-11-18 2021-05-26 Yung Shun Chiu Masque
WO2021234976A1 (fr) * 2020-05-21 2021-11-25 知子 大塚 Joint de fixation pour un masque et masque comprenant un joint de fixation pour un masque
JP7329283B1 (ja) * 2022-11-07 2023-08-18 武彦 國枝 マスク

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CN108601413A (zh) 2018-09-28
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