WO2020241685A1 - ナノメッシュ積層体、導電回路の製造方法、及びナノメッシュ貼り付けキット - Google Patents
ナノメッシュ積層体、導電回路の製造方法、及びナノメッシュ貼り付けキット Download PDFInfo
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- WO2020241685A1 WO2020241685A1 PCT/JP2020/020911 JP2020020911W WO2020241685A1 WO 2020241685 A1 WO2020241685 A1 WO 2020241685A1 JP 2020020911 W JP2020020911 W JP 2020020911W WO 2020241685 A1 WO2020241685 A1 WO 2020241685A1
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- nanomesh
- layer
- base material
- pva
- laminate
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- A61B5/683—Means for maintaining contact with the body
- A61B5/6832—Means for maintaining contact with the body using adhesives
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Definitions
- the present invention relates to a nanomesh laminate, preferably a conductive nanomesh laminate.
- the present invention also relates to a method for manufacturing a conductive circuit using the conductive nanomesh laminate, and further relates to a nanomesh attachment kit containing the nanomesh laminate.
- the nanomesh sensor disclosed in Non-Patent Document 1 is a PVA nanofiber mesh produced by an electrospinning method coated on one surface with a conductive metal or the like.
- the nanofiber mesh such as conductive metal adheres to the skin surface, and the adhered nanofiber mesh such as conductive metal follows the deformation of the skin and the joints. It can be applied to various sensors, etc., and can be used for wiring to various sensors.
- gold as the conductive metal and the like, and by having a mesh structure that does not interfere with cutaneous respiration, discomfort and inflammation caused by wearing the nanomesh are extremely reduced.
- a fiber network is formed by an electrospinning method, and a conductive substance is coated on the fiber network by a vapor deposition method, a sputtering method, or the like.
- the present inventors have proposed a conductive nanomesh material having a nanomesh coated with a conductive substance on a release material having a specific tape peeling force (Japanese Patent Application No. 2019-65956). ). After peeling from the release agent, the nanomesh is placed on the skin, and water or the like is sprayed on the nanomesh to dissolve the nanomesh, whereby wiring made of a conductive substance is formed on the skin.
- An object of the present invention is to provide a nanomesh laminate that can be easily attached to a desired place and is less likely to be distorted at the time of attachment.
- the present inventors have made improvements in order to solve the above problems, and nano mesh layers (B) in which a network base material (A) and a nanomesh layer (B) containing a polyvinyl alcohol (PVA) -based resin as a main component are laminated adjacent to each other. It has been found that the mesh laminate can provide a nanomesh laminate that can be easily attached and is less likely to be distorted during attachment.
- a network base material (A) and a nanomesh layer (B) containing a polyvinyl alcohol (PVA) -based resin as a main component are laminated adjacent to each other. It has been found that the mesh laminate can provide a nanomesh laminate that can be easily attached and is less likely to be distorted during attachment.
- the network base material (A) on the surface of the laminate of the nanomesh layer (B) containing PVA-based resin as the main component and the conductive substance layer (C) on the side opposite to the installation surface, It has been found that the nanomesh laminate itself can be easily positioned, and distortion is less likely to occur between the previously bonded portion and the portion that has not yet been bonded.
- the network base material (A) can be formed.
- the nanomesh laminate Since it has a mesh shape, after arranging the nanomesh laminate together with the mesh base material (A) at the desired installation location, use a mist blower, or use a support such as degreased cotton soaked in water to use water or the like.
- the nanomesh layer (B) containing PVA-based resin as the main component is dissolved by the water or steam supplied to the laminate, the condensed water on the surface of the adherend, etc., and the conductive substance layer. (C) can be pasted at a desired position. Further, since the reticulated base material (A) exists as it is at the time of sticking, distortion at the time of sticking is unlikely to occur.
- the present invention includes the following.
- [1] A nanomesh laminate in which a net-like base material (A) and a nanomesh layer (B) containing a polyvinyl alcohol-based resin as a main component are laminated adjacent to each other.
- [3] A nanomesh layer (B) containing a polyvinyl alcohol-based resin as a main component, a conductive substance layer (C), and a protective layer for protecting them are laminated in this order on the network base material (A).
- a network base material (A) having a pore opening ratio of 55 to 80% and a nanomesh layer (B1) containing polyvinyl alcohol as a main component and a cosmetic component or a pharmaceutical component are laminated adjacent to each other.
- a network base material (A) having a pore opening ratio of 10 to 45% and a nanomesh layer (B1) containing polyvinyl alcohol as a main component and a cosmetic component or a pharmaceutical component are laminated adjacent to each other.
- Method of manufacturing a conductive circuit Method of manufacturing a conductive circuit.
- a nanomesh pasting kit comprising the nanomesh laminate according to any one of [1] to [7] and a carrier on which an alcohol aqueous solution or water is supported.
- a nanomesh laminate in which a nanomesh material, preferably a conductive nanomesh material, can be easily attached to a desired place and is less likely to be distorted during attachment. Further, by placing the nanomesh laminate in a desired place and then attaching the nanomesh laminate using water or an aqueous alcohol solution, the time required for attachment is shortened, and a conductive substance layer is desired. It is possible to prevent it from moving from the position. Further, it is possible to provide a nanomesh attachment kit in which a nanomesh laminate and a carrier such as absorbent cotton impregnated with water or an aqueous alcohol solution are combined.
- One embodiment of the present invention is a nanomesh laminate in which a net-like base material (A) and a nanomesh layer (B) containing a polyvinyl alcohol-based resin as a main component are laminated adjacent to each other.
- the network base material (A) is a base material having a network through which liquids and vapors can pass, and its aperture ratio is not particularly limited, but water, an aqueous alcohol solution, water vapor, and alcohol can be applied in a short time.
- the opening ratio is preferably 55% to 80% in order to increase the permeability of steam and the like.
- accuracy is required for the pattern transferred by the nanomesh, for example, when measuring the resistance value, or when the pattern to be transferred has fine parts, for example, a part of the pattern to be transferred has a thickness.
- the pressure applied to the nanomesh laminate, especially the conductive material layer is dispersed at the time of pasting in order to transfer the pattern accurately, and the nanomesh laminate is performed.
- the pore opening ratio of the mesh of the substrate is preferably 10% or more and 45% or less, more preferably 40% or less, still more preferably 35% or less.
- the net-like shape may be a grid shape, and the net-like grid shape may be, for example, 60 ° staggered type, square staggered type, parallel type, oblong hole staggered type, oblong hole parallel type, square hole staggered type. , Square hole parallel type, hexagonal 60 ° staggered type, oblong hole staggered type, oblong hole parallel type and the like.
- the square hole parallel type is preferable from the viewpoint of adhesion to the nanomesh layer (B).
- the aperture ratio may be calculated based on the pattern.
- the pattern of the holes should be binarized as follows. Then, the opening ratio can be obtained. For example, it can be obtained by binarizing the pattern with an optical microscope having a magnification of 10 times and taking it in, and calculating the ratio of the perforated portion to the entire area.
- the size of one grid for binarization may be measured in the range of about 0.1 mm ⁇ 0.1 mm.
- an image is taken in which the range of 1 cm ⁇ 1 cm is set to a magnification of about 10 times, and 0.1 mm ⁇ 0.1 mm is set as one grid of the opening portion.
- the aperture ratio can be obtained by obtaining the ratio.
- the net-like base material is peeled off from the nano-mesh laminate, the nano-mesh layer is removed with a solvent such as water, and then the net-like base material is observed with an optical microscope as described above.
- the aperture ratio can be obtained.
- examples of the material of the reticulated base material (A) include generally used thermoplastic resins, and specific examples thereof include polyethylene, polypropylene, polyamide, polystyrene, and polyester. From the viewpoint of easy peeling of the nanomesh layer, polyethylene and polypolypropylene having high hydrophobicity are preferable. Further, polyethylene is preferable in terms of flexibility. Further, polypropylene is preferable from the viewpoint of strength.
- the thickness of the network base material (A) is usually 10 ⁇ m or more, preferably 50 ⁇ m or more, more preferably 100 ⁇ m or more, and usually 500 ⁇ m or less, preferably 400 ⁇ m or less, more preferably 300 ⁇ m or less.
- the roughness of the mesh of the reticulated substrate (A) is not particularly limited as long as it can permeate the liquid, but the mesh size is usually 50 nm or more, preferably 100 nm or more, and the normal mesh size is 20 mm or less, preferably the mesh size.
- the opening is 10 mm or less.
- the nanomesh layer (B) contains a polyvinyl alcohol (PVA) -based resin as a main component.
- PVA polyvinyl alcohol
- the "main component” means the most abundant component, and the main component may be 50% by weight or more, 70% by weight or more, and 90% by weight or more in the nanomesh layer (B). It may be 100% by weight or more. Therefore, the nanomesh layer (B) may contain fibers other than the PVA-based resin.
- the fibers other than the PVA-based resin are preferably water-soluble resins, for example, synthetic polymers such as polyethylene glycol, polyethylene oxide, polyacrylic acid, polymethacrylic acid, polyvinylpyrrolidone, and polyacrylamide, gelatin, purulan, and the like. Examples thereof include natural polymers such as water-soluble collagen and chemically modified polymers thereof (excluding thickening polysaccharides).
- the fiber diameter of the PVA-based resin constituting the nanomesh layer (B) is preferably 50 nm or more, more preferably 100 nm or more, more preferably 200 nm or more, and particularly preferably 300 nm or more. Further, it is usually 1000 nm or less, preferably 900 nm or less, more preferably 800 nm or less, still more preferably 600 nm or less, and particularly preferably 500 nm or less. Such a fiber diameter is preferable because the durability of the laminate is sufficient and the density of the conductive substance layer is likely to be sufficient. In the electrospinning method, the fiber diameter can be adjusted by, for example, the concentration of the spinning liquid used in the production of the nanomesh layer.
- the fiber diameter increases as the concentration of the PVA-based resin or PVA-based resin and the water-soluble resin in the spinning liquid increases. Further, in the melt blow method, for example, it can be adjusted by the discharge amount of the spinning liquid used at the time of manufacturing the nanomesh layer. The fiber diameter increases as the discharge amount of the spinning liquid composed of PVA-based resin or PVA-based resin and water-soluble resin increases.
- the PVA-based resin examples include unmodified PVA, carboxyl group-containing PVA, sulfo group-containing PVA, acetoacetyl group-containing PVA, and modified PVA having a 1,2-diol structure in the side chain. Of these, non-denatured PVA is preferable in terms of compatibility with living organisms.
- the PVA-based resin is a resin mainly composed of a vinyl alcohol structural unit obtained by saponifying a vinyl ester-based resin obtained by polymerizing a vinyl ester-based monomer, and is saponified with a vinyl alcohol structural unit equivalent to the degree of saponification. It is composed of vinyl ester structural units that remain untreated.
- the unmodified PVA is composed of only a vinyl alcohol structural unit and a vinyl ester structural unit
- the modified PVA is a PVA having a vinyl alcohol structural unit, a vinyl ester structural unit, and other structural units.
- the average degree of polymerization of the PVA-based resin used in the present embodiment is preferably 300 or more, more preferably 300 or more, further preferably 400 or more, and particularly preferably 500 or more. Within this range, the strength of the nanomesh is improved. On the other hand, it is preferably 3500 or less, more preferably 3000 or less, further preferably 2500 or less, and particularly preferably 2300 or less. Within this range, PVA-based resins can be easily produced.
- the average degree of polymerization of the PVA-based resin shall be the average degree of polymerization obtained by a method according to JIS K 6726.
- the degree of saponification of the PVA-based resin is preferably 70 to 100 mol%, more preferably 70 to 95 mol%, further preferably 70 to 92 mol%, and particularly preferably 70 to 90 mol%.
- the degree of saponification of the PVA-based resin may be a completely saponified product (that is, the degree of saponification is 100 mol%), but the nanomesh layer (B) can be easily produced within the above range.
- the degree of saponification of the PVA-based resin is a value obtained by a method conforming to JIS K 6726.
- plasticizers thickeners, and the like can be mentioned as components constituting the nanomesh layer (B).
- a polyhydric alcohol such as glycerin, sorbitol, polyethylene glycol, or an alkylene oxide adduct thereof can be blended.
- Glycerin is particularly preferable as a plasticizer for PVA-based resins.
- the amount of the plasticizer added may be sufficient to obtain the desired flexibility and solubility, and is not particularly limited, but is usually preferably 30 parts by weight or less with respect to 100 parts by weight of the PVA-based resin. More preferably, it is 10 to 15 parts by weight.
- the amount of the plasticizer added is preferably 2 parts by weight or less with respect to 100 parts by weight of the PVA-based resin.
- the thickener include galactomannans such as polysaccharides, guar gum, tara gum and locust bean gum, gellan gum such as kitan sun gum and low acyl gellan gum (hereinafter, also referred to as "LA gellan gum”), welan gum, lambzan gum and die utan.
- Examples include fermented polysaccharides such as gum, glucoses such as starch and dextrin, cellulose derivatives such as sodium carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose, and owlane, but other thickening polysaccharides as long as they have the above-mentioned thickening properties. Can also be used.
- Examples of the method for producing the nanomesh layer (B) include an electrospinning method (electrospinning method), a melt blow method, and a Kaijima melt spinning method.
- the electrospinning method can be performed by well-known means, and generally, a solution in which a polymer material is dissolved (spinning solution) is filled in a syringe, and a high voltage is applied between the nozzle of the syringe and the conductive collector. When applied, the solution is scattered in a jet shape, and the solvent is volatilized in the process of scattering to deposit fibers on the collector.
- the support may be made conductive and used as it is as a collector, or a support may be placed between the nozzle and the collector.
- the melt blow method is a general method for producing a non-woven fabric, but in order to produce a nanomesh, the nozzle diameter is reduced to reduce the amount of resin discharged.
- sea-island melt spinning method sea-island composite fibers having tens to hundreds of islands are produced using a base capable of arranging a large number of island polymers in the sea polymer, and the sea polymer is removed from the sea polymer with a solvent to obtain the island polymer. This is a method for obtaining ultrafine fibers made of.
- the conditions for performing the electrospinning method are not particularly limited, and may be appropriately adjusted according to the type of spinning solution, the use of the obtained fine fibers, and the like.
- the applied voltage can be 5 to 30 kV
- the discharge rate can be 0.01 to 1.00 mL / min
- the vertical distance between the nozzle and the substrate can be 100 to 200 mm
- the nozzle is 15. Those having a diameter of up to 25 G can be used.
- the spinning environment does not have to be strictly controlled, but it is preferable that the relative humidity is 10 to 50 RH% and the temperature is 10 to 25 ° C.
- the solvent used in the spinning solution used in the electrospinning method is preferably a good solvent for PVA-based resin.
- a good solvent for the PVA-based resin and the water-soluble resin it is preferable to use a good solvent for the PVA-based resin and the water-soluble resin, and when a thickening polysaccharide is added, a good solvent for the PVA-based resin and the water-soluble resin is used. It is preferable to use a solvent which is a poor solvent for the thickening polysaccharide. Water or alcohols are preferable as such a solvent.
- a solution of the water-soluble resin in which the thickening polysaccharide is dispersed can be obtained, and the obtained dispersion can be used by an electrospinning method.
- spinning with it is possible to obtain a laminated sheet in which the thickening polysaccharide is present in the form of particles in the fiber of the water-soluble resin.
- water, ethanol or ethylene glycol it is preferable to use water, ethanol or ethylene glycol as a solvent from the viewpoint of safety.
- the concentration of the PVA-based resin or the PVA-based resin and the water-soluble resin in the spinning liquid can be variously changed depending on the solvent used, the type of the water-soluble resin and the average molecular weight, but is usually about 5 to 20% by weight. If the concentration of PVA-based resin or PVA-based resin and water-soluble resin is too low, fibers will not be formed even if droplets are scattered from the tip of the nozzle, and if the concentration is too high, the solution discharged from the nozzle will be the collector. A fiber sheet cannot be obtained because the solution does not scatter in a jet shape and reaches the collector as a solution from the nozzle by the time it reaches, or the solution solidifies at the tip of the nozzle and the solution does not discharge.
- the amount of the thickening polysaccharide added to the spinning solution is preferably 10 to 900 parts by weight, more preferably 20 to 600 parts by weight, and further preferably 50 to 400 parts by weight with respect to 100 parts by weight of the water-soluble resin. Although it depends on the basis weight of the sheet, if the amount added is 10 parts or less, a sufficient thickening effect cannot be obtained even if water is added, and if it is 900 parts by weight or more, there are few fibers that form the skeleton of the sheet, so that the strength is high. Is reduced and handling becomes difficult.
- the spinning liquid may optionally contain a conductive agent or a surfactant.
- the amount of these additions is usually 0.0001 to 5% by weight based on the spinning solution.
- the fibrous formability can be improved by adding a conductive agent or a surfactant.
- a conductive agent a salt soluble in a solvent is preferable, and examples thereof include a lithium salt, a sodium salt, a potassium salt, a magnesium salt, a calcium salt, an aluminum salt, and an ammonium salt.
- examples of the surfactant include anionic, cationic, nonionic and amphoteric ones, but nonionic surfactants are preferable because they have a small effect on spinning.
- the spinning solution includes fatty acids such as paraffin wax, squalane and vaseline, natural waxes such as carnauba wax and honey wax, esters such as octyldodecyl palmitate, isopropyl myristate and glyceryl trioctanoate, stearic acid and behenic acid.
- fatty acids such as paraffin wax, squalane and vaseline
- natural waxes such as carnauba wax and honey wax
- esters such as octyldodecyl palmitate, isopropyl myristate and glyceryl trioctanoate
- stearic acid and behenic acid include stearic acid and behenic acid.
- Fatty acids such as, lanolin derivatives, fats and oils such as amino acid derivatives, dimethylpolysiloxane, methylphenylpolysiloxane, alkyl-modified organopolysiloxane, alkoxy-modified organopolysiloxane, higher fatty acid-modified organopolysiloxane, fluorine-modified organopolysiloxane Silicone compounds such as, perfluoropolyether, perfluorodecane, fluorine-based oils such as perfluorooctane, oil-based gelling agents such as dextrin fatty acid ester, citrus fatty acid ester, starch fatty acid ester, aluminum isostearate, calcium stearate, etc.
- silicone compounds such as, perfluoropolyether, perfluorodecane, fluorine-based oils such as perfluorooctane, oil-based gelling agents such as dextrin fatty acid este
- Benzophenone-based, PABA-based, Pakei-deric acid-based, salicylic acid-based, titanium oxide, cerium oxide and other UV inhibitors, collagen peptide, silk fibroin, sodium hyaluronate, sodium salicylate, arbutine, citric acid, L magnesium phosphate ascorbate , Lactoferrin, ascorbyl tetrahexyldecanoate, arbutin, gamma oryzanol, vitamin A acetate, pantenol, allantin, betaine trimethylglycine and other beauty ingredients, fragrances and the like may be blended within a range that does not interfere with spinning by the electrospinning method.
- a cosmetic active ingredient When used for cosmetic purposes, a cosmetic active ingredient may be blended.
- Cosmetic active ingredients include whitening ingredients, UV protection ingredients, anti-aging ingredients, anti-wrinkle ingredients, anti-inflammatory ingredients, antioxidant ingredients, moisturizing ingredients, astringent ingredients, slimming ingredients, peeling ingredients, skin-beautifying ingredients, blood circulation promoting ingredients, and antibacterial ingredients.
- Ingredients, bactericidal ingredients, refreshing ingredients, etc. can be mentioned.
- anti-inflammatory components, antihistamine components, anti-allergic components, blood circulation promoting components, vasodilator components, anti-inflammatory components, analgesic components, nutritional components, wound healing components, antibacterial components, antiviral components Pharmaceutical active ingredients such as bactericidal ingredients and skin protective ingredients may be blended.
- alcohols such as menthol, camphor and cetyl alcohol, fatty acid esters such as isopropyl palmitate and isopropyl myristate, glycerin monolaurate, glycerin monooleate and the like for promoting transdermal absorption of these active ingredients.
- unsaturated fatty acids such as, and transdermal absorption promoters such as ionic liquid may be blended.
- the content of the active ingredient may be within the range in which the effect is exhibited, and is usually 0.0001% by weight or more and 10% by weight or less.
- the component to be blended in the spinning liquid is not soluble in a good solvent of PVA-based resin or water-soluble resin
- the component to be blended may be dissolved in a solvent other than the good solvent of PVA-based resin or water-soluble resin.
- an emulsion or suspension solution in which a solution in which a compounding component is dissolved in a solution in which a PVA-based resin or a PVA-based resin and a water-soluble resin is dissolved is dispersed using a homogenizer or a stirrer is used as a spinning solution. May be good.
- the nanomesh laminate of the present embodiment preferably has a nanomesh layer (B) containing a PVA-based resin as a main component and a conductive substance layer (C) on a net-like base material (A).
- the nanomesh layer is made of PVA (polyvinyl alcohol) which is a biodegradable resin and the conductive material is made of gold, it can be preferably applied to a living body, but it can also be used for a device that can be applied as a flexible electronic device. Good. When applied to a living body, it can be used as a sensor for measuring the temperature, pressure, myoelectricity, etc. of the living body.
- PVA polyvinyl alcohol
- the conductive material is made of gold
- FIG. 1 is a schematic cross-sectional view of a nanomesh sheet according to a conventional embodiment.
- the nanomesh sheet 100 can be manufactured by forming a nanomesh 11 on a PET film 10 by an electrospinning method or the like, and forming a conductive substance layer 12 on the nanomesh 11 by a vapor deposition method, a sputtering method or the like.
- Such a nanomesh sheet 100 has a problem that the nanomesh is damaged when it is peeled off from the PET film 10.
- the present inventors have proposed adjusting the peeling force on the surface of the release material as a base material (Japanese Patent Application No. 2019-069556).
- a network base material (A) is used in this embodiment.
- FIG. 2 is a schematic cross-sectional view showing an example of the nanomesh laminate according to the present embodiment.
- the PVA nanomesh 21 and the conductive material layer 22 are laminated on the network base material 20.
- the network base material 20 supports a laminated body in which the PVA nanomesh sheet 21 and the conductive material layer 22 are laminated.
- the network base material is not particularly limited as long as it is sparingly soluble and can permeate liquids and vapors from the network.
- the net-like base material 20 may use a commercially available product such as a porous film, or may be manufactured by a known method.
- the PVA nanomesh layer 21 is a nanomesh layer containing a PVA-based resin as a main component, preferably made of a PVA-based resin, and is dissolved in water or alcohol.
- the PVA nanomesh layer 21 is typically made by electrospinning. In the electrospinning method, the above-mentioned network base material is prepared, and a PVA nanomesh layer is formed on the reticulated base material.
- the electrospinning method is also used in Patent Document 1, and the document can be referred to.
- the PVA nanomesh layer 21 may be replaced with a biodegradable resin other than the PVA-based resin.
- a biodegradable resin other than the PVA-based resin.
- PVP polyvinylpyrrolidene
- PGA polyglycolic acid
- PLA polylactic acid
- a conductive substance layer 22 is formed on the PVA nanomesh layer 21.
- the conductive material is not particularly limited as long as it has conductivity, and specifically, metal such as gold, platinum, silver, silver chloride, copper, titanium, palladium, chromium or cobalt, an alloy thereof, carbon (carbon) or the like can be used. It can be used, and ITO (indium tin oxide) may be used when it is desired to make the conductive material transparent. Other conductive metal oxides such as nickel oxide, tin oxide, indium oxide, indium-zirconium oxide (IZO), titanium oxide, and zinc oxide may be used.
- a conductive polymer material obtained by doping PEDOT: PSS in which a polythiophene derivative is doped with polystyrene sulfonic acid, PEDOT: PTS in which a polythiophene derivative is doped with paratoluenesulfonic acid, polypyrrole, polyaniline or the like with iodine or the like may be used.
- PEDOT PSS in which a polythiophene derivative is doped with polystyrene sulfonic acid
- PEDOT: PTS in which a polythiophene derivative is doped with paratoluenesulfonic acid, polypyrrole, polyaniline or the like with iodine or the like
- gold, carbon, titanium, PEDOT: PSS, and PEDOT: PTS are preferable, and gold is particularly preferable, in consideration of application to a living body.
- the method of forming the conductive substance layer is not particularly limited, and it is formed by a dry process or a coating method.
- a dry process vapor deposition, sputtering, CVD and the like are used. Of these, it is easiest to form a conductive material layer by vapor deposition.
- the coating method there are no particular restrictions on the coating method, but specifically, the wire bar coating method, blade coating method, die coating method, slit die coating method, reverse roll coating method, gravure coating method, kiss coating method, roll brushing method, and spray coating method. , Air knife coating method, pipe doctor method, impregnation / coating method, curtain coating method, flexographic printing, screen printing, inkjet and the like.
- the thickness of the PVA nanomesh layer 21 may be appropriately set according to the purpose and is not particularly limited, but is usually 0.1 ⁇ m or more and 1 ⁇ m or more, and usually 100 ⁇ m or less and 80 ⁇ m or less. Good.
- the thickness of the conductive substance layer is not particularly limited, but is usually 5 nm or more, may be 10 nm or more, is usually 2 ⁇ m or less, may be 1 ⁇ m or less, and may be 500 nm or less.
- the nanomesh laminate of the present embodiment is attached to an object such as skin with the reticulated substrate side facing up, and the PVA nanomesh is dissolved by bringing water or alcohol into contact with the PVA nanomesh, and the PVA is released as the liquid dries. It acts as an adhesive and can form a conductive material layer, ie, wiring or conductive circuits on the object.
- water may be used, but it is preferable to use an alcohol aqueous solution instead of water because the drying speed of the liquid is improved, the PVA nanomesh is less likely to be rounded, and the misalignment is suppressed.
- the alcohol is preferably one that can accelerate the evaporation of a liquid containing water, preferably contains ethyl alcohol, methyl alcohol, or isopropyl alcohol, and these may be mixed.
- the mixing ratio with water can be selected in the range of 5: 95-98: 2.
- the proportion of ethanol is preferably 90% to 50%, and alcohol used for disinfection (ethyl alcohol 70% or more, 90% or less) is particularly preferable.
- It can also contain a surfactant or the like.
- a surfactant or the like can also be contained.
- the nanomesh sheet 300 of the present embodiment has a form in which the conductive substance layer 32 is sandwiched between the PVA nanomesh 31 from both sides.
- the area of the conductive material layer 32 is large, there is a possibility that the adhesive force to the object is insufficient only by having the PVA nanomesh 31 on one side.
- the conductive material layer 32 can be reliably adhered to the object.
- the nanomesh sheet 400 of this embodiment has a protective layer 43. Since PVA nanomesh 41 is soluble in water, it is vulnerable to moisture. Therefore, it is preferable to laminate a protective layer 43 that protects the PVA nanomesh 41 from moisture. Further, as shown in FIG. 5, protective layers may be provided from both sides of the PVA nanomesh 51. The protective layer may protect the PVA nanomesh layer and the conductive substance layer from moisture and the like, but those having a gas barrier property are preferable. Specifically, a resin film such as PET, PTFE, or EVA is preferable. The thickness of the protective layer is not particularly limited, and may be 0.5 ⁇ m or more, 1 ⁇ m or more, 2000 ⁇ m or less, and 1000 ⁇ m or less.
- the method of manufacturing a conductive circuit using the nanomesh laminate described above is also included in the embodiment of the present invention. That is, another embodiment of the present invention comprises the step of placing the nanomesh laminate in a desired place and the step of bringing the nanomesh laminate into contact with an alcohol aqueous solution or water. The method.
- the place where the conductive circuit is formed is not particularly limited, but is preferably applied on the skin of the human body.
- nanomesh attachment kit including the nanomesh laminate and a carrier on which an alcohol aqueous solution or water is supported.
- the nanomesh pasting kit it is possible to easily form a conductive circuit on the human body, so that it becomes very easy to attach a sensor for measuring various parameters of a sick patient, for example.
- the same circuit can be stably provided for many patients.
- the variation of the circuit formed for each patient is small, and the circuit formation error can be reduced.
- the carrier that supports the alcohol aqueous solution or water may be any carrier that can support the alcohol aqueous solution or water, and examples thereof include cotton, nylon, polyester woven fabric, and polyester non-woven fabric.
- the alcohol aqueous solution preferably contains ethyl alcohol, methyl alcohol, or isopropyl alcohol, which can accelerate the evaporation of the liquid containing water, and these may be mixed.
- the mixing ratio with water can be selected in the range of 5: 95-98: 2. Of these, the proportion of ethanol is preferably 90% to 50%, and alcohol used for disinfection (around 80% ethyl alcohol) is particularly preferable.
- the alcohol aqueous solution or water may contain a surfactant or the like.
- Example 1 [Preparation of network base material (A)]
- the net-like base material (A) (opening ratio 65.6%, square hole parallel type net, made of polyethylene, thickness 240 ⁇ m) was attached to the nanomesh forming portion (on the drum) of the drum type electrospinning device manufactured by Kato Tech. ..
- the nanomesh layer (B) was produced from the above to obtain a nanomesh laminate 1.
- the settings of the electrospinning device are as follows. In this embodiment, a nanomesh layer (B) having no circuit formation was used instead of the sensor layer in which the circuit made of the conductive substance was formed. The handleability is not affected by the presence or absence of circuit formation. ⁇ Setting conditions> Target speed: 5m / min Traverse speed: 10 cm / min Syringe speed: 0.050 to 0.080 mm / min Voltage: 15 to 20 kV Film formation time: 60 min
- the conductive material side of the nanomesh laminate 1 obtained above was placed so as to be in contact with the skin of a subject having a body temperature of about 36 ° C., and water was sprayed from above the reticulated substrate (A) in an indoor environment of about 23 ° C.
- the reticular base material (A) could be easily removed, and the nanomesh layer (B) was in close contact with the skin without distortion.
- a PVA nanomesh sheet having the conventional configuration shown in FIG. 1 was used.
- the size of the nanomesh sheet was about 3 x 5 cm, and three 0.5 cm x 4 cm gold wires imitating a circuit were provided.
- the base material was peeled off from the nanomesh sheet, placed on the skin of the subject at a body temperature of about 36 ° C, and medical alcohol cotton (cotton wool soaked with 80% ethyl alcohol and 20% water) in an indoor environment at about 23 ° C. was pressed from the nanomesh sheet for 1 minute or more, and the gold wire was transferred to the alcohol cotton side, and the circuit could not be formed well on the skin.
- Example 2 A PVA nanomesh laminate using the reticulated base material (A) (made of polypropylene) shown in FIG. 2 was used.
- the size of the nanomesh laminate is about 3 x 5 cm
- the mesh size of the mesh substrate (A) is 1000 ⁇ m
- the diameter of the fibers constituting the mesh of the mesh substrate (A) with a pore size of 62.3% is Three 0.4 cm ⁇ 3 cm gold wires with a diameter of 0.7 ⁇ m were provided to imitate a circuit.
- Alcohol containing medical alcohol cotton (80% ethyl alcohol, 20% water) was placed on the skin of a subject at a body temperature of about 36 ° C while holding the reticulated base material (A), and in an indoor environment at about 23 ° C.
- cotton wool was pressed from the mesh base material (A) of the nanomesh sheet for 1 minute or longer, the gold wire was transferred onto the skin while maintaining its shape, and a circuit could be formed.
- Example 3 A PVA nanomesh laminated sheet using the net-like base material (A) (made of polypropylene, aperture ratio 26%: square hole parallel type net) shown in FIG. 2 was used.
- the size of the nanomesh laminated sheet was about 3 x 5 cm, and three 0.4 cm x 3 cm gold wires imitating a circuit were provided.
- cotton wool placed on the skin of a subject having a body temperature of about 36 ° C. and soaked only with water in an indoor environment of about 23 ° C. was applied to the reticulated base material (A) of a nanomesh sheet.
- the gold wire was transferred onto the skin while maintaining its shape, and a circuit could be formed.
- Example 4 A PVA nanomesh laminated sheet using the net-like base material (A) (made of polypropylene, aperture ratio 26%: square hole parallel type net) shown in FIG. 2 was used.
- the size of the nanomesh laminated sheet was about 3 x 5 cm, and three 0.4 cm x 3 cm gold wires imitating a circuit were provided.
- Alcohol containing medical alcohol cotton 80% ethyl alcohol, 20% water
- cotton wool was pressed from the top of the reticulated base material (A) of the nanomesh sheet for 1 minute or longer, the gold wire was transferred onto the skin while maintaining its shape, and a circuit could be formed.
- Nanomesh sheet 10 100, 200, 300, 400, 500 Nanomesh sheet 10 PET film 20, 30, 40, 50 Reticulated substrate (A) 11, 21, 31, 41, 51 PVA nanomesh 12, 22, 32, 42, 52 Conductive material 43, 53 Protective film
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Abstract
Description
例えば、高い表面追従性を有し、長期間安定的に使用可能なものとして、開口部を有する基材と、開口部の周囲を外枠として懸架された繊維網を有する電子機能部材が提案されている(特許文献1参照)。
しかしながら、ナノメッシュセンサーを実用化しようとする場合、ナノメッシュ自身が繊細であり、使用前にナノメッシュが損傷してしまう、あるいは基材からナノメッシュを剥離させる際にナノメッシュが破損する、など、その使い勝手に改善の余地があった。
本発明は、ナノメッシュ材料を所望の場所に貼付することが容易で、且つ貼付の際にゆがみが生じにくい、ナノメッシュ積層体を提供することを課題とする。
更に、PVA系樹脂を主成分とするナノメッシュ層(B)と導電性物質層(C)との積層体の、設置面とは反対側の面に網状基材(A)を設けることで、ナノメッシュ積層体自身の位置決めを容易に行うことが可能となり、且つ先に接着した部分と、未だ接着されていない部分との間に歪みが生じにくくなることを見出した。
このようにナノメッシュ層(B)と導電性物質層(C)との積層体の、設置面とは反対側の面に網状基材(A)を設けることで、網状基材(A)が網目状であることから、所望の設置個所に網状基材(A)ごとナノメッシュ積層体を配置した後に霧吹きを用いて、また、水などを含ませた脱脂綿等の担持体を用いて水などを積層体に供給することで、積層体に供給された水や蒸気や被着体表面の結露水等によりPVA系樹脂を主成分とするナノメッシュ層(B)が溶解し、導電性物質層(C)を所望の位置に貼り付けることが可能となる。また、貼付の際に網状基材(A)がそのまま存在することで、貼付の際の歪みが生じにくい。
[1]網状基材(A)とポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)とが隣接して積層されたナノメッシュ積層体。
[2]網状基材(A)上に、ポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)と導電性物質層(C)と、を有する、[1]に記載のナノメッシュ積層体。
[3]網状基材(A)上に、ポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)と、導電性物質層(C)と、これらを保護する保護層と、がこの順に積層された、[1]又は[2]に記載のナノメッシュ積層体。
[4]前記網状基材(A)の開孔率が55~80%である、[1]~[3]のいずれかに記載のナノメッシュ積層体。
[5]開孔率が55~80%である網状基材(A)と、ポリビニルアルコールを主成分とし化粧料成分又は医薬成分を含有するナノメッシュ層(B1)とが隣接して積層された、[1]~[3]のいずれかに記載のナノメッシュ積層体。
[6]前記網状基材(A)の開孔率が10~45%である、[1]~[3]のいずれかに記載のナノメッシュ積層体。
[7]開孔率が10~45%である網状基材(A)と、ポリビニルアルコールを主成分とし化粧料成分又は医薬成分を含有するナノメッシュ層(B1)とが隣接して積層された、[1]~[3]のいずれかに記載のナノメッシュ積層体。
[8][1]~[7]のいずれかに記載のナノメッシュ積層体を所望の場所に載置するステップ、及び前記ナノメッシュ積層体とアルコール水溶液又は水とを接触させるステップ、を含む、導電回路の製造方法。
[9][1]~[7]のいずれかに記載のナノメッシュ積層体と、アルコール水溶液又は水を担持させた担持体と、を含む、ナノメッシュ貼り付けキット。
また、当該ナノメッシュ積層体を所望の場所に載置した後、水またはアルコール水溶液を用いてナノメッシュ積層体を貼り付けることで、貼り付けに要する時間が短縮され、導電性物質層が所望の位置から動いてしまうことを防ぐことができる。
更に、ナノメッシュ積層体と、水またはアルコール水溶液を含浸させた脱脂綿などの担持体と、を組み合わせたナノメッシュ貼り付けキットを提供できる。
一方、ナノメッシュにより転写するパターンに正確さを求められる場合、例えば抵抗値を測定するような場合や、転写されるパターンに細かい部分がある場合、例えば転写されるパターンの一部に太さが2mm以下、特に1mm以下の幅しかないような部分がある場合には、パターンを正確に転写するため、貼り付け時にナノメッシュ積層体、特に導電性物質層にかかる圧力が分散し、ナノメッシュ積層体、特に導電性物質層へのダメージを抑制するため、基体のメッシュの開孔率は10%以上45%以下が好ましく、40%以下がより好ましく、35%以下がさらに好ましい。
開孔率を低くすることで、網状基材を液体の状態で通過するものより、水蒸気やアルコール蒸気のような気体で通過し、貼付面で結露し、貼り付け面側からナノメッシュ層を溶解し貼り付けるものが増えるため、より正確な転写が可能になると考えられる。
開孔率は、その基材の開孔部のパターンが規則的なものの場合には、そのパターンに基づき計算により求めればよい。
また基材が網戸のように開孔部のパターンが規則的な場合や不織布のように開孔部のパターンが不規則な場合でも、以下のように開孔部のパターンを2値化することで、開孔率を求めることができる。例えば、倍率10倍の光学顕微鏡にて、そのパターンを2値化して取り込み、全体の面積に対する開孔部の割合を計算することにより求めることができる。2値化を行うための1グリッドの大きさとしては、0.1mm×0.1mm程度の範囲で測定すればよい。また、特にその開孔部のパターンが不規則なものであれば、1cm×1cmの範囲を倍率10倍程度とした画像を撮り、0.1mm×0.1mmを1グリッドとして、開孔部の割合を求めることで、開孔率を得ることができる。
開孔率の確認方法としては、ナノメッシュ積層体から網状基材を剥がし、水等の溶剤等によりナノメッシュ層を除去した上で、光学顕微鏡を用いて網状基材を観察し、上述のようにして、開孔率を求めることができる。
繊維径は、エレクトロスピニング法においては、例えばナノメッシュ層製造時に用いる紡糸液の濃度によって調整できる。紡糸液中のPVA系樹脂あるいはPVA系樹脂および水溶性樹脂の濃度の増加と共に繊維径は太くなる。また、メルトブロー法においては、例えばナノメッシュ層製造時に用いる紡糸液の吐出量によって調整できる。PVA系樹脂あるいはPVA系樹脂および水溶性樹脂からなる紡糸液の吐出量の増加と共に繊維径は太くなる。
PVA系樹脂は、ビニルエステル系モノマーを重合して得られるビニルエステル系樹脂をケン化して得られる、ビニルアルコール構造単位を主体とする樹脂であり、ケン化度相当のビニルアルコール構造単位とケン化されずに残存したビニルエステル構造単位から構成される。
なお、無変性PVAは、ビニルアルコール構造単位とビニルエステル構造単位のみからなり、変性PVAは、ビニルアルコール構造単位とビニルエステル構造単位とさらにそれ以外の構造単位を有するPVAである。
なお、本実施形態において、PVA系樹脂の平均重合度は、JIS K 6726に準拠する方法で求めた平均重合度を用いるものとする。
PVA系樹脂のケン化度を70モル%以上とすることで柔軟性と粘着性が適正な範囲に保たれ、成形物が使用しやすくなる。一方、PVA系樹脂は完全ケン化物(すなわち、ケン化度100モル%)であってもよいが、前述の範囲とすることでナノメッシュ層(B)の製造が容易となる。
なお、本実施形態において、PVA系樹脂のケン化度は、JIS K 6726に準拠する方法で求められた値とする。
可塑剤としては、例えば、グリセリン、ソルビトール、ポリエチレングリコール等の多価アルコール、あるいはこれらのアルキレンオキサイド付加物を配合することができる。PVA系樹脂に対する可塑剤として特に好ましくは、グリセリンである。可塑剤の添加量は、目的とする柔軟性および溶解性を得るために十分な量を添加すればよく、特に限定されないが、通常PVA系樹脂100重量部に対し、30重量部以下が好ましく、さらに好ましくは10~15重量部である。フィルム変形の許容度が小さい用途においては、可塑剤の添加量は、PVA系樹脂100重量部に対し、2重量部以下とすることが好ましい。
増粘剤としては、例えば、多糖類、グアーガム、タラガム、ローカストビーンガム等のガラクトマンナン類、キタンサンガム、低アシル型ジェランガム(以下「LAジェランガム」ともいう。)等のジェランガム、ウェランガム、ラムザンガム、ダイユータンガム等の発酵多糖類、デンプン、デキストリン等のグルコース類、ナトリウムカルボキシメチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルメチルセルロース等のセルロース誘導体、オウルラン等が挙げられるが、上記増粘性を有する限りこれら以外の増粘性多糖類も使用することができる。
エレクトロスピニング法は、周知の手段によって行うことができ、一般的に、高分子材料を溶解した溶液(紡糸液)をシリンジに充填し、シリンジのノズルと導電性のコレクターとの間に高電圧を印加して、溶液をジェット状に飛散させ、飛散の過程で溶媒が揮発することで繊維をコレクターに堆積させる。
支持体上にナノメッシュ層(B)を形成するために、支持体を導電性にしてそのままコレクターとして用いてもよいが、ノズルとコレクターとの間に支持体を置いてもよい。
海島溶融紡糸法は、海ポリマー中に多数の島ポリマーを配置できる口金を用いて、島数が数十~数百の海島複合繊維を作製し、これから海ポリマーを溶剤で除去することで島ポリマーからなる極細繊維を得る方法である。
化粧用途、医薬用途に用いる場合、有効成分の含有量はその効果を奏する範囲であればよく、通常0.0001重量%以上、10重量%以下である。紡糸液に配合する成分がPVA系樹脂や水溶性樹脂の良溶媒に溶解しない場合には、配合する成分をPVA系樹脂や水溶性樹脂の良溶媒以外の溶媒に溶解させてもよい。この場合、PVA系樹脂あるいはPVA系樹脂および水溶性樹脂を溶解させた溶液に、配合成分を溶解させた溶液を、ホモジナイザーや攪拌機を用いて分散させた、エマルションもしくはサスペンション溶液を紡糸液として用いてもよい。
ナノメッシュシート100は、PETフィルム10の上にエレクトロスピニング法などによりナノメッシュ11を形成し、その上に蒸着法やスパッタリング法などにより導電性物質層12を形成することで、製造され得る。このようなナノメッシュシート100は、PETフィルム10から剥がす際にナノメッシュが破損するなどの問題があった。このような問題に対し本発明者らは基材となる剥離材表面の剥離力を調整することを提案している(特願2019-065956)。
ナノメッシュシート200は、網状基材20上に、PVAナノメッシュ21及び導電性物質層22が積層される。
網状基材20は、PVAナノメッシュシート21及び導電性物質層22が積層された積層体を支持する。網状基材としては、上記説明したとおり、難溶性であり、網目から液体や蒸気を透過できるものであれば特に限定されない。
網状基材20は、多孔質フィルムなどの市販品を用いてもよく、既知の方法で製造してもよい。
導電性物質層の厚みは特段限定されないが、通常5nm以上であり、10nm以上であってよく、また通常2μm以下であり、1μm以下であってよく、500nm以下であってよい。
この時、水を使用してもよいが、水ではなくアルコール水溶液を用いることで、液体の乾燥速度が向上し、PVAナノメッシュの丸まりなどが起こりにくく、位置ずれが抑制されるため、好ましい。
アルコールは、水を含む液体の蒸発を加速し得るものが好ましく、エチルアルコール又はメチルアルコール、イソプロピルアルコールを含むことが好ましく、これらが混合されていてもよい。また水との混合割合は5:95-98:2の範囲で選択することができる。このうち好ましくはエタノールの割合が90%~50%であり、特に消毒用に使用されるアルコール(エチルアルコール70%以上、90%以下)が好ましい。また、界面活性剤等を含有することもできる。
一方、化粧料有効成分又は医薬有効成分を含むナノメッシュ積層体を皮膚に貼付する際には、安全性の面からアルコールを含まない水を使用することが好ましい。このとき、界面活性剤等を含有することもできる。
本実施形態のナノメッシュシート300は、導電性物質層32を、PVAナノメッシュ31で、両側から挟持する形態である。導電性物質層32の面積が大きい場合には、PVAナノメッシュ31が一面側にあるだけでは対象物に対する接着力が不足する可能性もある。本実施形態のように、導電性物質層32の両面にPVAナノメッシュ31を設けることで、導電性物質層32を対象物に確実に接着することができる。
本実施形態のナノメッシュシート400は、保護層43を有する。PVAナノメッシュ41は水に溶解することから、湿気に弱い。そのため、PVAナノメッシュ41を水分から保護する保護層43を積層することが好ましい。また、図5に示すように、PVAナノメッシュ51の両側から保護層を設けてもよい。
保護層は、PVAナノメッシュ層と導電性物質層を、水分等から保護できればよいが、ガスバリア性を有するものが好ましい。具体的にはPET、PTEF、EVA等の樹脂フィルムであることが好ましい。
保護層の厚みは特段限定されず、0.5μm以上であってよく、1μm以上であってよく、2000μm以下であってよく、1000μm以下であってよい。
〔網状基材(A)の準備〕
網状基材(A)(開孔率65.6%、角穴並列型網、ポリエチレン製、厚さ240μm)をカトーテック社製ドラム型エレクトロスピニング装置のナノメッシュ形成部(ドラム上)に装着した。
PVA(未変性、ケン化度88モル%、4重量%水溶液粘度3mPa・s)をエチレングリコールに溶解させ、PVAの4重量%エチレングリコール溶液を作製し、紡糸液とした。
上記で準備した網状基材(A)が設置されたエレクトロスピニング装置に、かかる紡糸液を4ml、シリンジ中に投入し、シリンジ先端のノンベベル針18G(テルモ社製)に電極を取り付けて、エレクトロスピニングによりのナノメッシュ層(B)を製造し、ナノメッシュ積層体1を得た。エレクトロスピニング装置の設定は以下の通りである。
本実施例においては、導電性物質による回路が形成されたセンサー層の代わりに、回路形成がないナノメッシュ層(B)を用いた。なお、取り扱い性については、回路形成の有無の影響を受けない。
<設定条件>
Target speed:5m/min
Traverse speed:10cm/min
シリンジ speed:0.050~0.080mm/min
電圧:15~20kV
成膜時間:60min
上記で得られたナノメッシュ積層体1の導電材側を体温約36℃の被験者の皮膚に接するように置き、約23℃の屋内環境において網状基材(A)の上から水を吹きかけた。網状基材(A)を容易に取り外すことができ、かつゆがみなくナノメッシュ層(B)が皮膚に密着する状態が得られた。
従来の方法として、基材をシリコーン加工耐油紙(クッキングシート0251 30cm×5m 東洋アルミ社製)に変えた以外は、実施例1と同様にナノメッシュ積層体を作成し、取り扱い評価を行なった。得られた積層体は、破損することなく基材から容易に取り外すことができたが、皮膚への貼り付けの際、ナノメッシュがカールし、互着したため、皮膚に皺なく貼りつけることができなかった。
図1に示される従来の構成のPVAナノメッシュシートを用いた。ナノメッシュシートのサイズは約3×5cmで、回路を模した0.5cm×4cmの金線を3本設けた。ナノメッシュシートから基材を剥離し、体温約36℃の被験者の皮膚上に載置し、約23℃の屋内環境において医療用アルコール綿(エチルアルコール80%、水20%を含ませた脱脂綿)をナノメッシュシート上から1分間以上押し付けたところ、アルコール綿側に金線が転写され、皮膚上に回路がうまく形成できなかった。
アルコール綿の代わりに、霧吹きでPVAナノメッシュシートに水を掛けたところ、金線が変形して、メッシュシート状に描かれた所望の回路を再現できなかった。
図2に示される、網状基材(A)(ポリプロピレン製)を用いたPVAナノメッシュ積層体を用いた。ナノメッシュ積層体のサイズは約3×5cmで、網状基材(A)のメッシュの目開きは1000μm、開孔率62.3%の網状基材(A)のメッシュを構成する繊維の径は0.7μmで、回路を模した0.4cm×3cmの金線を3本設けた。網状基材(A)を有したまま、体温約36℃の被験者の皮膚上に載置し、約23℃の屋内環境において医療用アルコール綿(エチルアルコール80%、水20%を含ませたアルコール綿)を、ナノメッシュシートの網状基材(A)の上から1分間以上押し当てたところ、金線が皮膚上にその形状を維持したまま転写し、回路を形成することができた。
図2に示される、網状基材(A)(ポリプロピレン製、開孔率26%:角穴並列型網)を用いたPVAナノメッシュ積層体シートを用いた。ナノメッシュ積層体シートのサイズは約3×5cmで、回路を模した0.4cm×3cmの金線を3本設けた。網状基材(A)を有したまま、体温約36℃の被験者の皮膚上に載置し、約23℃の屋内環境において水のみを含ませた脱脂綿を、ナノメッシュシートの網状基材(A)の上から1分間以上押し当てたところ、金線が皮膚上にその形状を維持したまま転写し、回路を形成することができた 。
図2に示される、網状基材(A)(ポリプロピレン製、開孔率26%:角穴並列型網)を用いたPVAナノメッシュ積層体シートを用いた。ナノメッシュ積層体シートのサイズは約3×5cmで、回路を模した0.4cm×3cmの金線を3本設けた。網状基材(A)を有したまま、体温約36℃の被験者の皮膚上に載置し、約23℃の屋内環境において医療用アルコール綿(エチルアルコール80%、水20%を含ませたアルコール綿)を、ナノメッシュシートの網状基材(A)の上から1分間以上押し当てたところ、金線が皮膚上にその形状を維持したまま転写し、回路を形成することができた 。
10 PETフィルム
20、30、40、50 網状基材(A)
11、21、31、41、51 PVAナノメッシュ
12、22、32、42、52 導電性物質
43、53 保護フィルム
Claims (9)
- 網状基材(A)とポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)とが隣接して積層されたナノメッシュ積層体。
- 網状基材(A)上に、ポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)と導電性物質層(C)と、を有する、請求項1に記載のナノメッシュ積層体。
- 網状基材(A)上に、ポリビニルアルコール系樹脂を主成分とするナノメッシュ層(B)と、導電性物質層(C)と、これらを保護する保護層と、がこの順に積層された、請求項1又は2に記載のナノメッシュ積層体。
- 前記網状基材(A)の開孔率が55~80%である、請求項1~3のいずれか1項に記載のナノメッシュ積層体。
- 開孔率が55~80%である網状基材(A)と、ポリビニルアルコールを主成分とし化粧料成分又は医薬成分を含有するナノメッシュ層(B1)とが隣接して積層された、請求項1~3のいずれか1項に記載のナノメッシュ積層体。
- 前記網状基材(A)の開孔率が10~45%である、請求項1~3のいずれか1項に記載のナノメッシュ積層体。
- 開孔率が10~45%である網状基材(A)と、ポリビニルアルコールを主成分とし化粧料成分又は医薬成分を含有するナノメッシュ層(B1)とが隣接して積層された、請求項1~3のいずれか1項に記載のナノメッシュ積層体。
- 請求項1~7のいずれか1項に記載のナノメッシュ積層体を所望の場所に載置するステップ、及び前記ナノメッシュ積層体とアルコール水溶液又は水とを接触させるステップ、を含む、導電回路の製造方法。
- 請求項1~7のいずれか1項に記載のナノメッシュ積層体と、アルコール水溶液又は水を担持させた担持体と、を含む、ナノメッシュ貼り付けキット。
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CN202080038821.8A CN113874207A (zh) | 2019-05-29 | 2020-05-27 | 纳米网层叠体、导电电路的制造方法、以及纳米网粘贴套件 |
EP23154393.5A EP4190551A1 (en) | 2019-05-29 | 2020-05-27 | Method for using a nanomesh multilayer body |
EP20813137.5A EP3978234A4 (en) | 2019-05-29 | 2020-05-27 | NANOMESH MULTILAYER BODY, METHOD OF MAKING CONDUCTIVE CIRCUIT AND NANOMESH CONNECTION KIT |
KR1020217042623A KR20220016149A (ko) | 2019-05-29 | 2020-05-27 | 나노 메쉬 적층체, 도전 회로의 제조 방법, 및 나노 메쉬 첩부 키트 |
JP2021522812A JP7544041B2 (ja) | 2019-05-29 | 2020-05-27 | ナノメッシュ積層体、導電回路の製造方法、及びナノメッシュ貼り付けキット |
US17/453,661 US20220055340A1 (en) | 2019-05-29 | 2021-11-05 | Nanomesh multilayer body, method for producing conductive circuit and nanomesh bonding kit |
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EP4215356A1 (en) * | 2022-01-21 | 2023-07-26 | Fundación Tecnalia Research & Innovation | Laminated composite structure having printed functionalities |
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KR20220016149A (ko) | 2022-02-08 |
CN113874207A (zh) | 2021-12-31 |
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US20220055340A1 (en) | 2022-02-24 |
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