WO2018097322A1 - Feuille conductrice pour moulage tridimensionnel - Google Patents

Feuille conductrice pour moulage tridimensionnel Download PDF

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Publication number
WO2018097322A1
WO2018097322A1 PCT/JP2017/042677 JP2017042677W WO2018097322A1 WO 2018097322 A1 WO2018097322 A1 WO 2018097322A1 JP 2017042677 W JP2017042677 W JP 2017042677W WO 2018097322 A1 WO2018097322 A1 WO 2018097322A1
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Prior art keywords
sheet
conductive
linear body
layer
pseudo
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PCT/JP2017/042677
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English (en)
Japanese (ja)
Inventor
伊藤　雅春
閑山 井上
Original Assignee
リンテック オブ アメリカ インコーポレーテッド
リンテック株式会社
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Application filed by リンテック オブ アメリカ インコーポレーテッド, リンテック株式会社 filed Critical リンテック オブ アメリカ インコーポレーテッド
Priority to CN201780073320.1A priority Critical patent/CN110024480A/zh
Priority to JP2018553022A priority patent/JP7080183B2/ja
Publication of WO2018097322A1 publication Critical patent/WO2018097322A1/fr

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater

Definitions

  • This disclosure relates to a conductive sheet for three-dimensional molding.
  • Patent Document 1 states that “a transparent base material, a conductive heating wire provided on at least one surface of the transparent base material, a bus bar electrically connected to the conductive heating wire, and a bus bar connected to the bus bar.
  • a heating element including a power supply unit is disclosed.
  • Patent Document 2 discloses “a heating element in which a wire is disposed on an adhesive”.
  • Patent Document 3 states that “a transparent flexible film in which the width of the thin metal wire portion is 0.4 ⁇ m or more and 50 ⁇ m or less and the ratio of the light transmitting portion / total film area is 70 to 99.9%. "Heater” is disclosed.
  • TOM Three dimension Overlay Method
  • a technique for coating a three-dimensional forming sheet while three-dimensionally forming it using a three-dimensional forming method such as film insert molding or vacuum forming (vacuum forming) is known (for example, see Patent Document 4).
  • Patent Document 1 Japanese Patent Laid-Open No. 2012-134163
  • Patent Document 2 Japanese Patent No. 4776129
  • Patent Document 3 Japanese Patent Laid-Open No. 2008-0778779
  • Patent Document 4 Japanese Patent Laid-Open No. 2015-182438
  • the adhesion between the pseudo sheet structure and an adjacent layer or member may be poor. In that case, peeling easily occurs at the interface between the pseudo sheet structure and the adjacent layer or member.
  • the function of the conductive sheet is deteriorated, for example, the resistance of the pseudo-sheet structure is increased, or, for example, when the conductive sheet is used as a heat generating sheet, the temperature rise distribution is non-uniform.
  • an object of the present disclosure is to provide a conductive sheet for three-dimensional molding that exhibits high functions while suppressing peeling of the sheet with the pseudo sheet structure as a boundary.
  • ⁇ 1> A plurality of conductive linear bodies extending in one direction, with a distance of 0.3 mm to 12.0 mm, and being arranged with a constant distance between adjacent conductive linear bodies, and a pseudo sheet structure, A resin protective layer provided on one surface of the pseudo-sheet structure; An adhesive layer provided between the pseudo sheet structure and the resin protective layer; A conductive sheet for three-dimensional molding having ⁇ 2> The conductive sheet for three-dimensional molding according to ⁇ 1>, wherein the conductive linear body has a diameter of 5 ⁇ m to 75 ⁇ m.
  • ⁇ 3> ⁇ 1> or ⁇ 2 in which the ratio of the thickness of the resin protective layer to the adhesive layer (the thickness of the resin protective layer / the thickness of the adhesive layer) is 1/1 to 100/1 >
  • ⁇ 4> The conductive sheet for three-dimensional molding according to any one of ⁇ 1> to ⁇ 3>, wherein the conductive linear body is a corrugated linear body.
  • ⁇ 5> The conductive sheet for three-dimensional molding according to any one of ⁇ 1> to ⁇ 4>, wherein the conductive linear body is a linear body including a metal wire or a linear body including a conductive yarn.
  • ⁇ 6> The three-dimensionally forming conductive sheet according to any one of ⁇ 1 to ⁇ 4>, wherein the conductive linear body is a linear body including a metal wire coated with a carbon material.
  • the conductive linear body is a linear body including a metal wire coated with a carbon material, ⁇ 1> to ⁇ 4>, wherein the peel strength of the adhesive layer is 30 N minutes after the adhesive layer is pasted on a stainless steel plate, and the peel strength is 12 N / 25 mm or more.
  • the conductive linear body is a linear body including a conductive thread
  • the peel force of the adhesive layer wherein the peel force after 30 minutes is pasted on a stainless steel plate is 11 N / 25 mm or less ⁇ 1> to ⁇ 4>
  • Conductive sheet for three-dimensional molding ⁇ 9> The tertiary according to any one of ⁇ 1> to ⁇ 8>, wherein at least one layer constituting the layer provided on the surface of the pseudo sheet structure on the side having the resin protective layer contains a colorant.
  • ⁇ 10> Any one of ⁇ 1> to ⁇ 9>, wherein at least any one of the layers provided on the surface of the pseudo sheet structure on the side having the resin protective layer includes a thermally conductive inorganic filler.
  • ⁇ 11> The conductive sheet for three-dimensional molding according to any one of ⁇ 1> to ⁇ 10>, having a resin layer provided on a surface of the pseudo sheet structure opposite to the side having the resin protective layer .
  • ⁇ 12> The conductive sheet for three-dimensional molding according to any one of ⁇ 1> to ⁇ 11>, which is a heat generating sheet for three-dimensional molding.
  • a three-dimensionally forming conductive sheet that exhibits high functions while suppressing peeling of the sheet with the pseudo sheet structure as a boundary.
  • a numerical range using “to” means a numerical range in which the numerical values shown before and after “to” are included as the minimum value and the maximum value, respectively.
  • the conductive sheet for three-dimensional molding according to the present embodiment (hereinafter also referred to as “conductive sheet”) has a plurality of conductive linear bodies extending in one direction with an interval of 0.3 mm to 12.0 mm.
  • a pseudo sheet structure arranged with a constant distance between adjacent conductive linear bodies, a resin protective layer provided on one surface of the pseudo sheet structure, and the pseudo sheet structure and the resin protective layer And an adhesive layer provided therebetween.
  • the “surface” means a surface corresponding to the surface when a two-dimensional structure formed by a plurality of conductive linear bodies is regarded as a sheet.
  • the conductive sheet according to the present embodiment has a structure in which a pseudo sheet structure and an adhesive layer are laminated, and the adhesive layer is exposed between the conductive linear bodies of the pseudo sheet structure.
  • the exposed adhesive layer is a layer adjacent to the pseudo sheet structure (for example, a resin layer or the like provided on the surface of the pseudo sheet structure opposite to the side having the resin protective layer) or a member (for example, a conductive layer).
  • a molded article that is a target of covering of the adhesive sheet).
  • the sheet according to the present embodiment can exhibit high functions while suppressing peeling of the sheet with the pseudo sheet structure as a boundary.
  • seat which concerns on this embodiment becomes a structure by which the adhesive bond layer was provided between the pseudo sheet structure and the resin protective layer, the resin protective layer of the pseudo sheet structure (namely, electroconductive linear body) Can be easily fixed.
  • the resin protective layer of the pseudo sheet structure namely, electroconductive linear body
  • seat since a pseudo
  • the three-dimensionally forming conductive sheet 10 (hereinafter also simply referred to as “sheet 10”) according to this embodiment includes, for example, a pseudo sheet structure 20 and a pseudo sheet structure 20 as illustrated in FIGS.
  • the resin protective layer 30 provided on one surface of the adhesive, the adhesive layer 32 provided between the pseudo sheet structure 20 and the resin protective layer 30, and the side opposite to the side having the adhesive layer 32
  • the sheet 10 having this layer configuration is three-dimensionally formed while facing the side having the pseudo sheet structure 20 to the molded product (adhered body). At this time, the sheet 10 covers the surface of the molded product in a state in which the sheet 10 is adhered to the surface of the molded product by the adhesive force of the adhesive layer 32 exposed from between “a plurality of linear bodies” in the pseudo sheet structure 20. .
  • seat 10 of this layer structure is suitable for TOM shaping
  • the pseudo sheet structure 20 is configured by a pseudo sheet structure in which a plurality of conductive linear bodies 22 extending in one direction are arranged with a distance from each other while maintaining a constant distance between adjacent conductive linear bodies 22. ing.
  • the pseudo sheet structure 20 includes, for example, linearly extending conductive linear bodies 22 that are parallel to each other in a direction perpendicular to the length direction (or extending direction) of the conductive linear bodies 22. It is composed of a plurality of structures arranged at regular intervals. That is, the pseudo sheet structure 20 is configured by, for example, a structure in which the conductive linear bodies 22 are arranged in a stripe shape. The intervals between the plurality of conductive linear bodies 22 are preferably equal intervals, but may be unequal intervals.
  • the interval L between the conductive linear bodies 22 is 0.3 mm to 12.0 mm.
  • the adhesive layer 32 exposed from between the conductive linear bodies 22 is formed. It is possible to secure an exposed area and prevent the conductive linear body 22 from hindering the adhesion by the adhesive layer 32 exposed from the pseudo sheet structure 20.
  • the distance L between the conductive linear bodies 22 is preferably 0.5 mm to 10.0 mm, and more preferably 0.8 mm to 7.0 mm.
  • the distance L between the conductive linear bodies 22 is measured by observing the conductive linear bodies 22 of the pseudo-sheet structure 20 using a digital microscope and measuring the distance between two adjacent conductive linear bodies 22.
  • the interval L between two adjacent conductive linear bodies 22 is a length along the direction in which the conductive linear bodies 22 are arranged, and the two conductive linear bodies 22 are opposed to each other. It is the length between the parts to perform (refer FIG. 2).
  • the interval L is an average value of intervals between all adjacent conductive linear bodies 22 when the arrangement of the conductive linear bodies 22 is unequal, but the value of the interval L can be easily controlled. From the viewpoint of ensuring functional uniformity such as light transmittance and heat generation, the conductive linear bodies 22 are preferably arranged in the pseudo sheet structure 20 at substantially equal intervals.
  • the diameter D of the conductive linear body 22 is preferably 5 ⁇ m to 75 ⁇ m, more preferably 8 ⁇ m to 60 ⁇ m, and still more preferably 12 ⁇ m to 40 ⁇ m.
  • the diameter D of the conductive linear body 22 is set to 5 ⁇ m to 75 ⁇ m, an increase in sheet resistance of the pseudo sheet structure 20 can be suppressed.
  • the conductive linear body 22 is a layer adjacent to the resin protective layer 30 side. Even when embedded in (adhesive layer 32, resin protective layer, etc.), it is possible to avoid the surface of the resin protective layer 30 from rising in the portion where the conductive linear body 22 exists.
  • the conductive linear body 22 is a wave-shaped linear body
  • the linearization of the wave-shaped conductive linear body 22 when the sheet 10 is three-dimensionally formed is an adjacent layer ( It becomes difficult to be hindered by the adhesive layer 32 or the like.
  • the diameter D of the conductive linear body 22 is 12 ⁇ m or more
  • the sheet resistance of the pseudo sheet structure 20 is likely to be reduced.
  • the surface of the molded product to which the heat generating sheet for three-dimensional molding is applied as the sheet 10 is touched, the swell of the resin protective layer 30 due to the conductive linear body 22 tends to be easily sensed, According to the heat generating sheet for three-dimensional molding, it is easy to prevent the resin protective layer 30 from rising.
  • the diameter D of the conductive linear body 22 is determined by observing the conductive linear body 22 of the pseudo sheet structure 20 using a digital microscope, and the diameter of the conductive linear body 22 at five randomly selected locations. And measure the average value.
  • the volume resistivity R of the conductive linear body 22 is preferably 1.0 ⁇ 10 ⁇ 9 ⁇ ⁇ m to 1.0 ⁇ 10 ⁇ 3 ⁇ ⁇ m, and 1.0 ⁇ 10 ⁇ 8 ⁇ ⁇ m to 1. 0 ⁇ 10 ⁇ 4 ⁇ ⁇ m is more preferable.
  • the sheet resistance of the pseudo sheet structure 20 is likely to be reduced.
  • the measurement of the volume resistivity R of the conductive linear body 22 is as follows. First, the diameter D of the conductive linear body 22 is obtained according to the method described above. Next, a silver paste is applied to both ends of the conductive linear body 22 and the resistance of a portion having a length of 40 mm is measured to determine the resistance value of the conductive linear body 22. Then, assuming a columnar conductive linear body 22 having a diameter D, the cross-sectional area of the conductive linear body 22 is calculated, and this is multiplied by the measured length to obtain a volume. The obtained resistance value is divided by this volume to calculate the volume resistivity R of the conductive linear body 22.
  • the conductive linear body 22 is not particularly limited as long as it has conductivity, and examples thereof include a linear body including a metal wire and a linear body including a conductive thread.
  • the conductive linear body 22 may be a linear body including a metal wire and a conductive thread (such as a linear body in which a metal wire and a conductive thread are twisted).
  • the conductive linear body 22 is formed into a wave-shaped linear body, and when the sheet 10 is three-dimensionally formed and stretched, the conductive linear body 22 is linearized and the sheet 10 is stretched. In the case where the conductive linear body 22 is also extended following this, if the conductive linear body 22 and the adhesive layer 32 are firmly bonded, extension of the conductive linear body 22 is hindered. On the other hand, when a linear body including a metal wire or a linear body including a conductive thread is applied as the conductive linear body 22, the conductive linear body 22 and the adhesive layer 32 are appropriately bonded. It becomes a state.
  • the conductive linear body 22 easily peels from the adhesive layer 32, The conductive linear body 22 can be easily elongated.
  • the linear body including the metal wire and the linear body including the conductive yarn both have high thermal conductivity and high electrical conductivity, when applied as the conductive linear body 22, the pseudo sheet structure 20 Light transmittance is easily improved while reducing surface resistance. In addition, quick heat generation is easily realized. Furthermore, it is easy to obtain a linear body having a small diameter as described above.
  • Metal wires include copper, aluminum, tungsten, iron, molybdenum, nickel, titanium, silver, gold and other metals, or alloys containing two or more metals (for example, steels such as stainless steel and carbon steel, brass, phosphorus Bronze, zirconium copper alloy, beryllium copper, iron nickel, nichrome, nickel titanium, cantal, hastelloy, rhenium tungsten, etc.).
  • the metal wire may be plated with tin, zinc, silver, nickel, chromium, nickel-chromium alloy, solder, or the like, or may be one whose surface is coated with a carbon material or polymer to be described later. .
  • Metallic wire covered with a carbon material can also be used as the metallic wire.
  • the adhesiveness with the adhesive layer 32 is lowered. Therefore, when a linear body including a metal wire covered with a carbon material is applied as the conductive linear body 22, the corrugated conductive linear body 22 follows the elongation of the sheet 10 by three-dimensional molding. Even in the case of linearization and elongation, the conductive linear body 22 can be easily peeled off from the adhesive layer 32, and the conductive linear body 22 can be easily elongated. Further, when the metal wire is coated with a carbon material, metal corrosion is also suppressed.
  • Examples of the carbon material covering the metal wire include amorphous carbon such as carbon black, activated carbon, hard carbon, soft carbon, mesoporous carbon, and carbon fiber; graphite; fullerene; graphene; carbon nanotube.
  • amorphous carbon such as carbon black, activated carbon, hard carbon, soft carbon, mesoporous carbon, and carbon fiber
  • graphite fullerene
  • graphene carbon nanotube
  • the linear body including the conductive yarn may be a linear body composed of one conductive thread, or may be a linear body obtained by twisting a plurality of conductive threads.
  • Conductive yarns include yarns containing conductive fibers (metal fibers, carbon fibers, ionic conductive polymer fibers, etc.), yarns plated or vapor-deposited with metal (copper, silver, nickel, etc.) on the surface, metal oxides, etc. Examples thereof include impregnated yarn.
  • a linear body including a yarn using carbon nanotubes (hereinafter also referred to as “carbon nanotube linear body”) is particularly preferable.
  • the carbon nanotube linear body is, for example, a carbon nanotube forest (a growth body in which a plurality of carbon nanotubes are grown on a substrate so as to be oriented in a direction perpendicular to the substrate, and is called an “array”.
  • the carbon nanotubes are drawn out in the form of a sheet from the end of the carbon nanotube sheet, the bundled carbon nanotube sheets are bundled, and then the bundle of carbon nanotubes is twisted.
  • a ribbon-like carbon nanotube linear body is obtained when twisting is not applied during twisting, and a thread-like linear body is obtained when twisting is applied.
  • the ribbon-like carbon nanotube linear body is a linear body having no structure in which the carbon nanotubes are twisted.
  • a carbon nanotube linear body can be obtained by spinning from a carbon nanotube dispersion.
  • the production of the carbon nanotube linear body by spinning can be performed by, for example, a method disclosed in US Publication No. 2013/0251619 (Japanese Unexamined Patent Publication No. 2011-253140). From the viewpoint of obtaining a uniform diameter of the carbon nanotube linear body, it is desirable to use a filamentous carbon nanotube linear body.
  • the carbon nanotube linear body may be a linear body in which two or more carbon nanotube linear bodies are knitted together.
  • the carbon nanotube linear body may be a linear body including carbon nanotubes and a metal (hereinafter also referred to as “composite linear body”).
  • composite linear body easily improves the conductivity of the linear body while maintaining the above-described characteristics of the carbon nanotube linear body. That is, it becomes easy to reduce the resistance of the pseudo sheet structure 20.
  • the composite linear body for example, (1) a carbon nanotube linear body in which carbon nanotubes are drawn out from the end of a carbon nanotube forest into a sheet shape, the carbon nanotube sheets pulled out are bundled, and then a bundle of carbon nanotubes is twisted In the process of obtaining the composite linear body in which a single metal or a metal alloy is supported on the surface of a carbon nanotube forest, sheet or bundle, or a twisted linear body by vapor deposition, ion plating, sputtering, wet plating, etc.
  • a metal when twisting a bundle of carbon nanotubes, a metal may be supported on the carbon nanotubes as in the composite linear body of (1).
  • the composite linear body of (3) is a composite linear body when two linear bodies are knitted, but at least one linear body of metal or a linear body of metal alloy or composite If a linear body is included, three or more carbon nanotube linear bodies, a single metal linear body, a metal alloy linear body, or a composite linear body may be knitted.
  • Examples of the metal of the composite linear body include simple metals such as gold, silver, copper, iron, aluminum, nickel, chromium, tin, and zinc, and alloys containing at least one of these metals (copper-nickel-phosphorus alloys, Copper-iron-phosphorus-zinc alloy).
  • the resin protective layer 30 is a layer that constitutes the surface of the sheet 10 after the sheet 10 is three-dimensionally molded and covered with a molded product. That is, the resin protective layer 30 protects the pseudo sheet structure 20 and the functional layers (thermal conductive layer, coloring layer, decoration layer, etc.) provided between the resin protective layer 30 and the pseudo sheet structure 20, and the sheet 10. It is a layer for increasing the strength of the surface and maintaining the function and the like.
  • the resin protective layer 30 preferably contains a thermoplastic resin from the viewpoint of three-dimensional moldability.
  • the thermoplastic resin include polyolefin resin, polyester resin, polyacryl resin, polystyrene resin, polyimide resin, polyimide amide resin, polyamide resin, polyurethane resin, polycarbonate resin, polyarylate resin, melamine resin, epoxy resin, urethane resin, Well-known resins such as silicone resins and fluorine resins, or mixed resins containing two or more of these may be mentioned.
  • the resin protective layer 30 also preferably contains a thermosetting resin from the viewpoint of surface protection.
  • thermosetting resin include well-known compositions such as an epoxy resin composition, a resin composition that cures by a urethane reaction, and a resin composition that cures by a radical polymerization reaction.
  • Epoxy resin compositions include polyfunctional epoxy resins, bisphenol A type epoxy resins, bisphenol F type epoxy resins, biphenyl type epoxy resins, dicyclopentadiene type epoxy resins, amine compounds, phenolic curing agents, etc. And a combination of these curing agents.
  • cured by urethane reaction the resin composition containing a (meth) acryl polyol and a polyisocyanate compound is mentioned, for example.
  • the resin composition cured by radical polymerization reaction include resin compositions capable of radical polymerization reaction such as (meth) acryloyl groups and unsaturated polyesters. For example, (meth) acryl having a radical polymerizable group in the side chain.
  • Resin a polymer of a vinyl monomer having a reactive group (hydroxy (meth) acrylate, glycidyl (meth) acrylate, etc.)) having a group capable of reacting with the reactive group of the copolymer and radically polymerizable Group-containing monomers ((meth) acrylic acid, isocyanate group-containing (meth) acrylate etc.) reacted (meth) acrylic resin, etc.), (meth) acrylic acid etc. were reacted at the end of the epoxy resin Unsaturated polyester obtained by condensing epoxy acrylate having (meth) acrylic group and carboxylic acid (such as fumaric acid) having unsaturated group with diol And the like.
  • Resin protective layer 30 may contain a thermally conductive inorganic filler.
  • the resin protective layer 30 includes a heat conductive inorganic filler, when the sheet 10 is applied as a heat generating sheet for three-dimensional molding, it is possible to more effectively generate surface temperature unevenness (non-uniform temperature increase distribution). Can be prevented.
  • the thermal conductive inorganic filler is not particularly limited as long as the thermal conductivity is an inorganic filler having a thermal conductivity of 10 W / mK or more, and metal particles, metal oxide particles, metal hydroxide particles, metal nitride-based particles. Etc.
  • thermally conductive inorganic filler examples include silver particles, copper particles, aluminum particles, nickel particles, zinc oxide particles, aluminum oxide particles, aluminum nitride particles, silicon oxide particles, magnesium oxide particles, aluminum nitride particles,
  • Well-known inorganic particles such as titanium particles, boron nitride particles, silicon nitride particles, silicon carbide particles, diamond particles, graphite particles, carbon nanotube particles, metal silicon particles, carbon fiber particles, fullerene particles, and glass particles can be used.
  • a heat conductive inorganic filler may be used individually by 1 type, and may be used together 2 or more types.
  • the content of the heat conductive inorganic filler is preferably 1% by mass to 90% by mass, more preferably 2% by mass to 70% by mass with respect to the entire resin protective layer, and 5% by mass to More preferably, it is 50 mass%.
  • the resin protective layer 30 may contain a colorant.
  • the resin protective layer 30 includes a colorant and the resin protective layer 30 is a colored layer, the concealability of the conductive linear body 22 is increased.
  • a coloring agent there is no restriction
  • Resin protective layer 30 may contain other additives.
  • other additives include a curing agent, an anti-aging agent, a light stabilizer, a flame retardant, a conductive agent, an antistatic agent, and a plasticizer.
  • an image for example, an image such as a figure, a character, a pattern, or a pattern
  • an image forming material ink, toner, or the like.
  • an image forming method a known printing method such as gravure printing, offset printing, screen printing, inkjet printing, thermal transfer printing, or the like is applied.
  • the resin protective layer 30 functions as a decoration layer and has a function of protecting decoration by an image.
  • the sheet 10 can be applied as a three-dimensional decoration sheet.
  • the thickness of the resin protective layer 30 is, for example, preferably 8 ⁇ m to 2500 ⁇ m, more preferably 10 ⁇ m to 2300 ⁇ m, and even more preferably 15 ⁇ m to 2000 ⁇ m, from the viewpoint of ensuring the three-dimensional moldability and the protective function of the resin protective layer 30.
  • the adhesive layer 32 is a layer containing an adhesive.
  • the adhesive layer 32 forms the sheet 10. It is easy to coat the surface of the product. Specifically, as described above, in the sheet 10, the adhesion between the sheet 10 and the surface of the molded product is achieved by the adhesive layer 32 exposed from the pseudo sheet structure 20 (the plurality of conductive linear bodies 22). It becomes easy.
  • the adhesive layer 32 may be curable. By hardening the adhesive layer, the adhesive layer 32 is given sufficient hardness to protect the pseudo sheet structure 20. Moreover, the impact resistance of the cured adhesive layer 32 is improved, and deformation of the cured adhesive layer 32 due to impact can be suppressed.
  • the adhesive layer 32 is preferably energy ray curable such as ultraviolet rays, visible energy rays, infrared rays, and electron beams in that it can be easily cured in a short time.
  • the “energy ray curing” includes thermal curing by heating using energy rays.
  • the curing conditions with energy rays vary depending on the energy rays to be used. For example, in the case of curing by ultraviolet irradiation, the irradiation amount of ultraviolet rays is 10 mJ / cm 2 to 3,000 mJ / cm 2 , and the irradiation time is 1 second to 180 seconds. It is preferable that
  • the adhesive of the adhesive layer 32 examples include a so-called heat seal type that adheres by heat, and an adhesive that wets and develops sticking properties.
  • the adhesive layer 32 is adhesive.
  • a pressure-sensitive adhesive layer formed from an agent (pressure-sensitive adhesive) is preferable.
  • the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is not particularly limited.
  • examples of the pressure-sensitive adhesive include acrylic pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, and polyvinyl ether-based pressure-sensitive adhesives.
  • the adhesive is preferably at least one selected from the group consisting of an acrylic adhesive, a urethane adhesive, and a rubber adhesive, and more preferably an acrylic adhesive.
  • acrylic pressure-sensitive adhesive examples include a polymer containing a structural unit derived from an alkyl (meth) acrylate having a linear alkyl group or a branched alkyl group (that is, a polymer obtained by polymerizing at least an alkyl (meth) acrylate) ), An acrylic polymer containing a structural unit derived from a (meth) acrylate having a cyclic structure (that is, a polymer obtained by polymerizing at least a (meth) acrylate having a cyclic structure) and the like.
  • (meth) acrylate” is used as a term indicating both “acrylate” and “methacrylate”, and the same applies to other similar terms.
  • the acrylic polymer is a copolymer
  • the form of copolymerization is not particularly limited.
  • any of a block copolymer, a random copolymer, or a graft copolymer may be sufficient.
  • the acrylic pressure-sensitive adhesive is derived from an alkyl (meth) acrylate (a1 ′) having a chain alkyl group having 1 to 20 carbon atoms (hereinafter also referred to as “monomer component (a1 ′)”).
  • the acrylic copolymer containing the structural unit (a2) derived from the structural unit (a1) and the functional group-containing monomer (a2 ′) (hereinafter also referred to as “monomer component (a2 ′)”) is preferable.
  • the acrylic copolymer further includes a structural unit (a3) derived from the monomer component (a3 ′) other than the monomer component (a1 ′) and the monomer component (a2 ′). You may go out.
  • the number of carbon atoms of the chain alkyl group possessed by the monomer component (a1 ′) is preferably 1 to 12, more preferably 4 to 8, and further preferably 4 to 6, from the viewpoint of improving the adhesive properties.
  • the monomer component (a1 ′) include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) ) Acrylate, tridecyl (meth) acrylate, stearyl (meth) acrylate and the like.
  • butyl (meth) acrylate and 2-ethylhexyl (meth) acrylate are preferable, and butyl (meth) acrylate is more preferable.
  • the content of the structural unit (a1) is preferably 50% by mass to 99.5% by mass, more preferably 55% by mass to 99% by mass with respect to the total structural unit (100% by mass) of the acrylic copolymer. %, More preferably 60% by mass to 97% by mass, and still more preferably 65% by mass to 95% by mass.
  • Examples of the monomer component (a2 ′) include a hydroxy group-containing monomer, a carboxy group-containing monomer, an epoxy group-containing monomer, an amino group-containing monomer, a cyano group-containing monomer, a keto group-containing monomer, and an alkoxysilyl group-containing monomer. Can be mentioned. Among these monomer components (a2 ′), a hydroxy group-containing monomer and a carboxy group-containing monomer are preferable.
  • Examples of the hydroxy group-containing monomer include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl ( (Meth) acrylate and the like, and 2-hydroxyethyl (meth) acrylate is preferable.
  • Examples of the carboxy group-containing monomer include (meth) acrylic acid, maleic acid, fumaric acid, and itaconic acid, and (meth) acrylic acid is preferable.
  • Examples of the epoxy group-containing monomer include glycidyl (meth) acrylate.
  • Examples of the amino group-containing monomer include diaminoethyl (meth) acrylate.
  • Examples of the cyano group-containing monomer include acrylonitrile.
  • the content of the structural unit (a2) is preferably 0.1% by mass to 50% by mass, more preferably 0.5% by mass to the total structural unit (100% by mass) of the acrylic copolymer. It is 40% by mass, more preferably 1.0% by mass to 30% by mass, and still more preferably 1.5% by mass to 20% by mass.
  • Examples of the monomer component (a3 ′) include cyclohexyl (meth) acrylate, benzyl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, and dicyclohexane.
  • Examples thereof include (meth) acrylates having a cyclic structure such as pentenyloxyethyl (meth) acrylate, imide (meth) acrylate, and acryloylmorpholine; vinyl acetate; styrene.
  • the content of the structural unit (a3) is preferably 0% by mass to 40% by mass, more preferably 0% by mass to 30% by mass, with respect to the total structural unit (100% by mass) of the acrylic copolymer. More preferably, it is 0% by mass to 25% by mass, and still more preferably 0% by mass to 20% by mass.
  • the above-mentioned monomer component (a1 ′) may be used alone or in combination of two or more, and the above-mentioned monomer component (a2 ′) is used alone or in combination of two or more.
  • the monomer component (a3 ′) described above may be used alone or in combination of two or more.
  • the acrylic copolymer may be crosslinked with a crosslinking agent.
  • the crosslinking agent include known epoxy crosslinking agents, isocyanate crosslinking agents, aziridine crosslinking agents, metal chelate crosslinking agents, and the like.
  • the functional group derived from the monomer component (a2 ′) can be used as a cross-linking point that reacts with the cross-linking agent.
  • the pressure-sensitive adhesive layer may contain an energy ray-curable component in addition to the pressure-sensitive adhesive.
  • an energy ray-curable component for example, when the energy ray is ultraviolet ray, for example, trimethylolpropane tri (meth) acrylate, ethoxylated isocyanuric acid tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, Tetramethylolmethane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol monohydroxypenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, caprolactone-modified dipentaerythritol hexa (meth) acrylate, 1, 4-butylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, di
  • an acrylic pressure-sensitive adhesive When an acrylic pressure-sensitive adhesive is applied as the pressure-sensitive adhesive, a functional group that reacts with a functional group derived from the monomer component (a2 ′) in the acrylic copolymer as an energy ray-curable component, and an energy ray A compound having a polymerizable functional group in one molecule may be used. Due to the reaction between the functional group of the compound and the functional group derived from the monomer component (a2 ′) in the acrylic copolymer, the side chain of the acrylic copolymer can be polymerized by irradiation with energy rays. Even if the pressure-sensitive adhesive is other than an acrylic pressure-sensitive adhesive, a component having a side chain that is energy ray polymerizable may be used as a copolymer component other than the copolymer that becomes the pressure-sensitive adhesive.
  • the pressure-sensitive adhesive layer When the pressure-sensitive adhesive layer is energy ray curable, the pressure-sensitive adhesive layer preferably contains a photopolymerization initiator.
  • the speed at which the pressure-sensitive adhesive layer is cured by irradiation with energy rays can be increased by the photopolymerization initiator.
  • the photopolymerization initiator include benzophenone, acetophenone, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzoin benzoic acid, methyl benzoin benzoate, benzoin dimethyl ketal, 2,4-diethylthioxanthone.
  • the adhesive layer 32 may contain an inorganic filler.
  • an inorganic filler By containing an inorganic filler, the hardness of the adhesive layer 32 after curing can be further improved. Further, the thermal conductivity of the adhesive layer 32 is improved. Furthermore, when the adherend is mainly composed of glass, the linear expansion coefficient of the sheet 10 and the adherend can be made closer, whereby the sheet 10 is stuck to the adherend and cured as necessary. The reliability of the obtained device is improved.
  • the inorganic filler examples include powders of silica, alumina, talc, calcium carbonate, titanium white, bengara, silicon carbide, boron nitride, and the like; beads formed by spheroidizing these; single crystal fibers; glass fibers, and the like.
  • a silica filler and an alumina filler are preferable.
  • the adhesive layer 32 may contain the heat conductive inorganic filler which the resin protective layer 30 mentioned above can contain as an inorganic filler. In this case, it is possible to obtain the same effect as that in the case where an intermediate resin layer 36 which is a heat conductive layer, which will be described later, is provided.
  • An inorganic filler may be used individually by 1 type, and may use 2 or more types together.
  • the inorganic filler is preferably surface-modified (coupled) with a compound having a curable functional group.
  • the curable functional group include a hydroxyl group, a carboxyl group, an amino group, a glycidyl group, an epoxy group, an ether group, an ester group, and a group having an ethylenically unsaturated bond.
  • the compound having a curable functional group include a silane coupling agent.
  • Inorganic fillers are energy ray-curable functional groups such as groups having an ethylenically unsaturated bond, since the fracture resistance of the adhesive layer 32 after curing (strength of the adhesive layer 32 after curing) is easily maintained. It is more preferable that the surface is modified with a compound having Examples of the group having an ethylenically unsaturated bond include a vinyl group, a (meth) acryloyl group, and a maleimide group, and a (meth) acryloyl group is preferable from the viewpoint of high reactivity and versatility.
  • the adhesive layer 32 cured after the sheet 10 is three-dimensionally molded and coated on the surface of the molded product becomes tough.
  • the adhesive layer 32 contains the inorganic filler by which the surface modification was carried out, it is preferable that the adhesive layer 32 contains the energy-ray-curable component separately.
  • the average particle size of the inorganic filler is preferably 1 ⁇ m or less, and more preferably 0.5 ⁇ m or less. If the average particle size of the inorganic filler is in such a range, the light transmittance of the adhesive layer 32 can be easily improved, and the haze of the sheet 10 (that is, the adhesive layer 32) can be easily reduced. it can. Although the minimum of the average particle diameter of an inorganic filler is not specifically limited, It is preferable that it is 5 nm or more. The average particle diameter of the inorganic filler is determined by observing 20 inorganic fillers with a digital microscope, measuring the average diameter of the maximum diameter and the minimum diameter of the inorganic filler as a diameter, and taking the average value.
  • the content of the inorganic filler is preferably 0% by mass to 95% by mass, more preferably 5% by mass to 90% by mass with respect to the entire adhesive layer 32, and 10% by mass to 80% by mass. % Is more preferable.
  • the pencil hardness of the cured adhesive layer 32 is preferably HB or higher, more preferably F or higher, and even more preferably H or higher. Thereby, the function in which the adhesive layer 32 after hardening further protects the pseudo sheet structure 20 is further improved, and the pseudo sheet structure 20 can be more sufficiently protected.
  • the pencil hardness is a value measured according to JISK5600-5-4.
  • the adhesive layer 32 may contain a colorant. Thereby, the same effect as the case where the intermediate resin layer 36 which is a coloring layer mentioned later is provided can be acquired.
  • the adhesive layer 32 may contain other components.
  • other components include well-known additives such as organic solvents, flame retardants, tackifiers, ultraviolet absorbers, antioxidants, antiseptics, antifungal agents, plasticizers, antifoaming agents, and wettability modifiers. Is mentioned.
  • the thickness of the adhesive layer 32 is, for example, preferably 3 ⁇ m to 150 ⁇ m, more preferably 5 ⁇ m to 100 ⁇ m from the viewpoint of adhesiveness.
  • the release layer 34 has a function of protecting the pseudo-sheet structure 20 and the adhesive layer 32 exposed from the pseudo-sheet structure 20 (the plurality of conductive linear bodies 22) before the sheet 10 is three-dimensionally formed. .
  • the release layer 34 it is possible to suppress damage to the pseudo sheet structure 20 due to handling and a decrease in the adhesive ability of the adhesive layer 32.
  • the release layer 34 is peeled from the sheet 10 when the sheet 10 is three-dimensionally formed.
  • the release layer 34 is not particularly limited.
  • the release layer 34 preferably includes a release substrate and a release agent layer formed by applying a release agent on the release substrate.
  • the release layer 34 may include a release agent layer only on one side of the release substrate, or may include a release agent layer on both sides of the release substrate.
  • the release substrate include a paper substrate, a laminated paper obtained by laminating a thermoplastic resin (polyethylene, etc.) on a paper substrate, a plastic film, and the like.
  • the paper substrate include glassine paper, coated paper, cast coated paper, and the like.
  • plastic film examples include polyester films such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate; polyolefin films such as polypropylene and polyethylene.
  • release agent examples include olefin resins, rubber elastomers (eg, butadiene resins, isoprene resins, etc.), long chain alkyl resins, alkyd resins, fluorine resins, silicone resins, and the like.
  • the thickness of the release layer 34 is not particularly limited. Usually, the thickness of the release layer 34 is preferably 20 ⁇ m to 200 ⁇ m, and more preferably 25 ⁇ m to 150 ⁇ m.
  • the thickness of the release agent layer of the release layer 34 is not particularly limited. When a release agent layer is formed by applying a solution containing a release agent, the thickness of the release agent layer 34 is preferably 0.01 ⁇ m to 2.0 ⁇ m, and more preferably 0.03 ⁇ m to 1.0 ⁇ m. When a plastic film is used as the peeling substrate, the thickness of the plastic film is preferably 3 ⁇ m to 150 ⁇ m, and more preferably 5 ⁇ m to 100 ⁇ m.
  • the total thickness of layers provided on the surface of the pseudo sheet structure 20 on the side having the resin protective layer 30 (hereinafter also referred to as “surface layer of the pseudo sheet structure 20”).
  • the diameter is preferably 1.5 times to 80 times the diameter of the conductive linear body 22, more preferably 3 times to 40 times, and still more preferably 5 times to 20 times.
  • the sheet 10 Since the total thickness of the surface layer of the pseudo sheet structure 20 is 1.5 times or more the diameter of the conductive linear body 22, the sheet 10 is three-dimensionally molded and covered with a molded product, Even if the solid body 22 is embedded in a layer (adhesive layer 32, resin protective layer 30, etc.) adjacent to the resin protective layer 30 side, the surface of the resin protective layer 30 (that is, the conductive linear body 22 exists) It is possible to prevent the sheet surface) from rising. Further, when the sheet 10 is applied as a heat generating sheet, the heat generation efficiency on the surface of the pseudo sheet structure 20 is improved.
  • the total thickness of the surface layer of the pseudo sheet structure 20 is preferably 80 times or less the diameter of the conductive linear body 22.
  • the surface layer of the pseudo sheet structure 20 corresponds to the resin protective layer 30 and other layers (adhesive layer 32, other resin layers, etc.) provided between the resin protective layer 30 and the pseudo sheet structure 20.
  • a layer (such as a release layer) provided on the surface of the pseudo sheet structure 20 on the side opposite to the side having the resin protective layer 30 does not correspond.
  • the thickness of the surface layer of the pseudo sheet 20 is such that the pseudo sheet structure 20 (the conductive linear body 22) is partly or entirely adjacent to the side having the resin protective layer (in this embodiment, an adhesive). In the case of being embedded in the layer 32 or the like, it means a thickness in a region where the pseudo sheet structure 20 (the conductive linear body 22) is not embedded.
  • the thickness of each layer constituting the surface layer of the pseudo sheet 20 is the same.
  • the ratio of the thickness of the resin protective layer 30 to the thickness of the adhesive layer 32 is 1/1 to 100/1. It is preferably 2/1 to 50/1, more preferably 3/1 to 20/1.
  • the conductive linear body 22 is not only the adhesive layer 32 but also a layer (resin protective layer 30 or the like) constituting a surface layer other than the adhesive layer 32. Can also be embedded. Therefore, although it is preferable that the surface layer is thick, the means for increasing the thickness of the surface layer does not depend only on increasing the thickness of the adhesive layer. Therefore, it is not necessary to increase the thickness of the adhesive layer 32 in consideration of the embedding of the conductive linear body 22, and the adhesive layer 32 may not be excessively thick in consideration of the durability of the sheet 10 after three-dimensional molding. preferable. Therefore, the ratio of the thickness of the resin protective layer 30 to the thickness of the adhesive layer 32 is preferably in the above range.
  • the conductive linear body 22 when the conductive linear body 22 is a linear body including a metal wire covered with a carbon material, it is a peeling force of the adhesive layer 32, and the adhesive layer 32 is attached to a stainless steel plate.
  • the peeling force after 30 minutes is preferably 12 N / 25 mm or more.
  • the adhesiveness with the adhesive layer 32 is lowered. Therefore, when the sheet 10 is manufactured, the linear body including the metal wire is easily peeled off from the adhesive layer 32 when the linear body including the metal wire is fed out and fixed onto the surface of the adhesive layer 32. Therefore, it is preferable to apply the adhesive layer 32 having a peeling force of 12 N / 25 mm or more and strong adhesiveness.
  • the peeling force of the adhesive layer 32 is more preferably 13 N / 25 mm or more.
  • the upper limit of the peeling force of the adhesive layer 32 is preferably 35 N / 25 mm or less.
  • the peeling force of the adhesive layer 32 is 30 minutes after the adhesive layer 32 is pasted on the stainless steel plate.
  • the peeling force is preferably 11 N / 25 mm or less. Therefore, by applying an adhesive layer 32 having a weak adhesiveness with a peeling force of 11 N / 25 mm or less, the wavy conductive linear body 22 is linearly following the elongation of the sheet 10 by three-dimensional molding. Even in the case where the conductive linear body 22 is elongated, the conductive linear body 22 can be easily peeled off from the adhesive layer 32 and the conductive linear body 22 can be easily stretched.
  • the peeling force of the adhesive layer 32 is more preferably 10 N / 25 mm or less. However, the lower limit of the peeling force of the adhesive layer 32 is preferably 2 N / 25 mm or less.
  • the peeling force of each adhesive layer 32 is a value measured as follows. A surface layer (25 mm in width) having an adhesive layer 32 is prepared, the adhesive layer 32 is faced, and the surface layer is attached to the surface of the stainless steel plate. In that state, a 180 ° peel test specified in JIS-Z0237 (2000) is carried out after 30 minutes have passed since the load was applied. Specifically, using a tensile tester, the surface layer is pulled in the direction of 180 ° at a speed of 300 mm / min, and the force required for the surface layer to peel from the stainless steel plate is determined by the peeling force of each adhesive layer 32. Measure as The conditions for applying the load are also as described in the above JIS.
  • the sheet surface resistance is measured by the following method. First, in order to improve electrical connection, a silver paste is applied to both ends of the pseudo sheet structure 20. Then, after affixing the sheet
  • seat 10 which concerns on this embodiment is not specifically limited.
  • the sheet 10 is manufactured through the following steps, for example. First, the composition for forming the adhesive layer 32 is applied on the resin protective layer 30 to form a coating film. Next, the coating film is dried to produce the adhesive layer 32. Next, on the laminated body (the adhesive layer 32) of the resin protective layer 30 and the adhesive layer 32, the conductive linear bodies 22 are arranged while being arranged to form the pseudo sheet structure 20. For example, the conductive linear body 22 is spirally wound on the surface of the adhesive layer 32 while rotating the drum member in a state where the laminated body of the resin protective layer 30 and the adhesive layer 32 is disposed on the outer peripheral surface of the drum member. Wrap it in a shape.
  • the bundle of conductive linear bodies 22 wound in a spiral shape is cut along the axial direction of the drum member.
  • the pseudo sheet structure 20 is formed and disposed on the surface of the adhesive layer 32.
  • simulated sheet structure 20 is taken out from a drum member.
  • the release layer 34 is bonded to the surface of the pseudo sheet structure opposite to the side having the adhesive layer 32 in the laminated body taken out.
  • the release layer 34 may be bonded to the surface of the pseudo sheet structure of the laminate in a state where the release layer 34 is disposed on the drum member.
  • the conductive portions adjacent to each other in the pseudo sheet structure 20 are moved by moving the feeding portion of the conductive linear body 22 along the direction parallel to the axis of the drum member. It becomes easy to adjust the space
  • the sheet 10 may be manufactured.
  • the sheet 10 uses a three-dimensional molding method such as TOM molding, film insert molding, vacuum molding, or the like on the surface of a molded product used for home appliance casings, vehicle interior parts, building material interior materials, and the like. Used to coat molded articles. Molded articles formed by using the covering layer formed by the sheet 10 as a surface conductor include, for example, surface conductive articles such as curved touch panels, ice and snow melting heat generating articles (signal lighting portions, etc.), heating exothermic articles (automobile heat generation) It can be used as a surface heating article such as an interior product.
  • the sheet 10 prevents the adhesion by the adhesive layer 32 exposed from the pseudo sheet structure 20 from being obstructed by the conductive linear body, and the conductive linear body to some extent. Can be compacted. For this reason, when a molded article on which a surface conductor is formed is used as a surface heat-generating article, it is possible to prevent occurrence of uneven temperature rise on the surface. For example, in the case where the heat-generating article for melting ice and snow is an outdoor display body, it is possible to suppress the occurrence of a problem such that the ice and snow remain unmelted on the surface corresponding to the region where the conductive linear body 22 does not exist. In addition, for example, when used as a heating exothermic sheet that can be installed on the outermost surface of a molded product, the possibility that the human body senses a relatively low temperature portion between the linear bodies is reduced. Can be used without discomfort.
  • the sheet 10 according to the present embodiment is used by providing a power feeding unit (electrode) that feeds power to the pseudo-sheet structure 20, for example, although not shown, when applied as a three-dimensional forming heat generating sheet.
  • the power feeding unit is made of, for example, a metal material and is electrically connected to the end of the pseudo sheet structure 20.
  • the power feeding unit and the pseudo sheet structure 20 are joined by a known method such as soldering so that power can be supplied to each conductive linear body 22 of the pseudo sheet structure 20.
  • the sheet 10 according to the present embodiment is not limited to the above form, and may be modified or improved.
  • modified examples of the sheet 10 according to the present embodiment will be described.
  • symbol is attached
  • the sheet 10 according to the present embodiment is not limited to the above-described layer configuration, for example, and may have another layer configuration.
  • the sheet 10 is based on the layer configuration illustrated in FIG. 2, and 1) a resin layer 36 (hereinafter “intermediate”) provided between the resin protective layer 30 and the adhesive layer 32. 2) a resin layer 38 (hereinafter also referred to as “lower resin layer 38”) provided on the surface of the pseudo sheet structure 20 on the side opposite to the side having the resin protective layer 30; 3) A sheet 11 having at least one release layer 40 (hereinafter also referred to as “upper release layer 40”) provided on the surface of the resin protective layer 30 opposite to the side having the pseudo sheet structure 20. Also good.
  • FIG 3 shows the sheet 11 that further includes the intermediate resin layer 36, the lower resin layer 38, and the upper release layer 40 in the sheet 10.
  • the intermediate resin layer 36 will be described.
  • the intermediate resin layer 36 is a layer provided as a functional layer such as a heat conductive layer, a colored layer, a decoration layer, a primer layer, or a component migration prevention layer.
  • the intermediate resin layer 36 may be provided with a plurality of layers having different functions.
  • the intermediate resin layer 36 is a single layer and may have a plurality of functions.
  • the intermediate resin layer 36 is a heat conductive layer
  • the intermediate resin layer 36 is composed of, for example, a layer containing a heat conductive inorganic filler and a thermoplastic resin.
  • the intermediate resin layer 36 is a heat conductive layer
  • the intermediate resin layer 36 is comprised by the layer containing a coloring agent and a thermoplastic resin, for example.
  • the intermediate resin layer 36 is a colored layer, the concealability of the conductive linear body 22 is enhanced. In this case, a layer having optical transparency may be applied as the resin protective layer 30.
  • the intermediate resin layer is a decorative layer
  • a resin layer for example, thermoplastic resin
  • an image for example, an image such as a figure, a character, a pattern, or a pattern
  • an image forming material ink, toner, or the like
  • a known printing method such as gravure printing, offset printing, screen printing, inkjet printing, thermal transfer printing, or the like is applied.
  • the intermediate resin layer is a decorative layer
  • the sheet 11 can be applied as a three-dimensional decorative sheet.
  • the resin protective layer 30 is a light-transmitting layer.
  • the same component as the resin protective layer 30 is illustrated as said each component which comprises the intermediate
  • the thickness of the intermediate resin layer 36 is, for example, preferably 5 to 1300 ⁇ m, more preferably 10 to 1000 ⁇ m, and still more preferably 15 to 900 ⁇ m, from the viewpoint of ensuring the three-dimensional moldability and each function of the resin protective layer 30.
  • the layer containing the colorant is not limited to the intermediate resin layer 36, and is at least one layer constituting a layer provided on the surface of the pseudo sheet structure 20 on the side having the resin protective layer 30. Can be applied to.
  • the layer containing the heat conductive inorganic filler is not limited to the intermediate resin layer 36, and constitutes a layer provided on the surface of the pseudo sheet structure 20 on the side having the resin protective layer 30. It can be applied to at least one of the layers.
  • the decorative layer is not limited to the intermediate resin layer 36, and can be applied to at least any one of the layers provided on the surface of the pseudo sheet structure 20 on the side having the resin protective layer 30.
  • the lower resin layer 38 will be described.
  • the lower resin layer 38 is a resin layer for thermally welding the sheet 11 to the surface of the molded product when the sheet 11 is three-dimensionally molded and coated on the surface of the molded product.
  • the sheet 11 having the lower resin layer 38 is suitable for the film insert method among the three-dimensional molding methods.
  • the lower resin layer 38 for example, a layer containing a thermoplastic resin is applied. And as for each said component which comprises the intermediate
  • the lower resin layer 38 is preferably a layer made of polyolefin such as polypropylene, a layer made of acrylonitrile-butadiene-styrene copolymer, or the like, from the viewpoint of improving heat-fusibility to a molded product.
  • the thickness of the lower resin layer 38 is, for example, preferably from 5 to 1300 ⁇ m, more preferably from 10 to 1000 ⁇ m, and even more preferably from 15 to 900 ⁇ m, from the viewpoint of improving heat-fusibility to a molded product.
  • the upper release layer 40 will be described.
  • the upper release layer 40 has a function of protecting the resin protective layer 30 before the three-dimensional molding and during the three-dimensional molding.
  • the upper release layer 40 is released from the sheet 11 after three-dimensional forming.
  • the sheet 11 having the upper release layer 40 is suitable for the film insert method among the three-dimensional forming methods. If necessary, the upper release layer 40 may be released from the sheet 11 before three-dimensional forming.
  • the upper release layer 40 is not particularly limited as long as it has resistance to heating during three-dimensional molding, and the same configuration as the release layer 34 is exemplified.
  • the upper release layer 40 is preferably a layer made of a heat-resistant resin film from the viewpoint of the protective function of the resin protective layer 30 and resistance to heating during three-dimensional molding.
  • the sheet 10 according to the present embodiment has, for example, an aspect in which another adhesive layer is provided on the surface of the pseudo sheet structure 20 on the side opposite to the side having the adhesive layer 32, and a pseudo sheet structure.
  • Another adhesive layer is provided on the surface of the other adhesive layer opposite to the side having the body 20 may be used.
  • the sheet 10 may be a sheet 12 in which the conductive linear body 22 of the pseudo sheet structure 20 is curved or bent periodically or irregularly.
  • the conductive linear body 22 may have a wave shape such as a sine wave, a rectangular wave, a triangular wave, and a sawtooth wave.
  • the pseudo sheet structure 20 has, for example, a structure in which a plurality of wavy conductive linear bodies 22 extending in one direction are arranged at equal intervals in a direction orthogonal to the extending direction of the conductive linear bodies 22. Also good.
  • FIG. 4 shows a pseudo sheet structure 20 in which a plurality of wavy conductive linear bodies 22 extending in one direction are arranged at equal intervals in a direction orthogonal to the direction in which the conductive linear bodies 22 extend.
  • a sheet 12 is shown.
  • the conductive linear body 22 By applying a wave-like linear body as the conductive linear body 22, when the sheet 12 is three-dimensionally formed and coated on the surface of the molded product, the conductive linear body follows the elongation of the sheet 12. In the direction in which the body 22 extends, the wavy conductive linear body 22 can be straightened and easily stretched. Therefore, in the direction in which the conductive linear body 22 extends, the sheet 12 can be easily extended without being limited to the conductive linear body 22.
  • the sheet 12 can be easily stretched without being limited to the conductive linear bodies 22. .
  • the wavelength ⁇ (waveform pitch: see FIG. 4) of the corrugated conductive linear body 22 is 0.3 mm. Is preferably 100 mm, more preferably 0.5 mm to 80 mm. From the same point of view, the amplitude A (see FIG. 4) of the corrugated conductive linear body 22 is preferably 0.3 mm to 200 mm, and more preferably 0.5 mm to 160 mm. The amplitude A means the total amplitude (peak to peak).
  • the sheet 10 according to the present embodiment is different from the wave-shaped first portion having the wavelength ⁇ ⁇ b> 1 and the amplitude A ⁇ b> 1 and at least one of the wavelength ⁇ ⁇ b> 1 and the amplitude A ⁇ b> 1 of the first portion.
  • It may be a sheet 13 having a pseudo sheet structure 20 in which conductive linear bodies having a wave-shaped second portion having a wavelength ⁇ 2 and an amplitude A2 are arranged.
  • the sheet 10 when the sheet 10 is accompanied by a large extension, when a wave-shaped linear body having a small wavelength or a large amplitude is applied as the conductive linear body 22, a wave-shaped conductive linear body is used.
  • the length when the body 22 is linearized can be increased, and the conductive linear body 22 can easily follow the large elongation of the sheet 10.
  • the conductive linear body 22 has a straight line or a part close to a straight line and a part that is not linearized and maintains a wave shape.
  • the sheet 10 having the pseudo sheet structure 20 in which the conductive linear bodies 22 having a portion that is close to a straight line and a portion that is not linearized and maintains a wave shape is mainly composed of conductive wires.
  • the resistance of the pseudo-sheet structure 20 increases due to the portion of the linear body 22 that is not linearized and maintains the wave shape, and the power consumption increases, or the existence ratio per area of the conductive linear body 22 is increased. Due to the presence of a large portion, for example, when the sheet is used as a heat generating sheet, the function of the sheet is deteriorated, for example, the amount of heat generated increases only by that portion.
  • the sheet 10 a wave-shaped first portion having a wavelength ⁇ 1 and an amplitude A1, and a wave-shaped second portion having a wavelength ⁇ 2 and an amplitude A2 different from at least one of the wavelength ⁇ 1 and the amplitude A1 of the first portion,
  • the sheet 13 in which the conductive linear body 22 is configured so as to have the above is applied.
  • the portion of the conductive linear body 22 in the region where the elongation of the sheet 13 during the three-dimensional molding is large has a small wavelength or an amplitude.
  • the first part of the large or both corrugated shape is used, and the part of the conductive linear body 22 in the region where the elongation of the sheet 13 during the three-dimensional molding is small is the first of the corrugated shape having a large wavelength or a small amplitude.
  • the conductive linear body 22 having the first portion and the second portion having different at least one of the wavelength and the amplitude is applied, in the three-dimensional molding, the conductive linear body 22 is formed at a portion where the sheet 13 is greatly elongated. Since the first part is greatly linearized and the second part of the conductive linear body 22 is linearized small at the part where the extension of the sheet 13 is small, the degree of linearization of each part is consequently uniform. .
  • the sheet 13 is used as, for example, a heat generating sheet because the resistance of the pseudo sheet structure 20 is increased and the power consumption is increased or the existence ratio of the conductive linear body 22 per area is large. In this case, it is possible to suppress deterioration of the sheet function such as a partial increase in the amount of heat generated.
  • the conductive linear body 22 includes a wavy first portion 22 ⁇ / b> A, a wavy second portion 22 ⁇ / b> B, and a wavy third portion 22 ⁇ / b> C.
  • the first portion 22A has a wavelength ⁇ 1 and an amplitude A1.
  • the second portion 22B has a wavelength ⁇ 2 smaller than the wavelength ⁇ 1 and an amplitude A2 that is the same as the amplitude A1.
  • the third portion 22C has the same wavelength ⁇ 3 as the wavelength ⁇ 1 and the same amplitude A3 as the amplitude A1 and the amplitude A2.
  • the second part 22B has a longer linearized length of the conductive linear body 22 in the extending direction of the conductive linear body 22 than the first part 22A and the third part 22C.
  • the conductive linear body 22 linearizes to the same extent as 22 A of 1st site
  • part 22B is made into an area
  • the sheet 13 having the pseudo sheet structure 20 in which the conductive linear bodies 22 having the wave-shaped first part 22A to the third part 22C are arranged is three-dimensionally molded to cover the surface of the molded product.
  • the portions of the conductive linear body 22 are linearized at different degrees according to the degree of elongation of the sheet 13, and the three-dimensionally formed conductive linear body 22 has a shape close to a straight line at any portion. Can be adjusted.
  • the sheet 13 having the wavy first part 22A to the third part 22C can suppress the deterioration of the function of the sheet.
  • 13A indicates the region of the sheet 13 having the first portion 22A
  • 13B indicates the region of the sheet 13 having the second portion 22B
  • 13C indicates the region of the sheet 13 having the third portion 22C.
  • the electroconductive linear body 22 is not restricted to the said aspect.
  • the conductive linear body 22 may have a first portion 22AA and a second portion 22BB to a third portion 22CC having different amplitudes.
  • the first portion 22AA has a wavelength ⁇ 1 and an amplitude A2.
  • the second portion 22BB has the same wavelength ⁇ 2 as the wavelength ⁇ 1 and an amplitude A2 that is smaller than the amplitude A1.
  • the third portion 22CC has the same wavelength ⁇ 3 as the wavelengths ⁇ 1 and ⁇ 2, and the same amplitude A3 as the amplitude A1.
  • the second part 22BB has a shorter linearized length of the conductive linear body 22 than the first part 22AA and the third part 22CC.
  • the conductive linear body 22 linearizes to the same extent as 1st site
  • part 22BB is made into a small area
  • the sheet 13 having the pseudo sheet structure 20 in which the conductive linear bodies 22 having the wave-shaped first part 22AA to the third part 22CC are arranged is three-dimensionally molded to cover the surface of the molded product.
  • the portions of the conductive linear body 22 are linearized at different degrees according to the degree of elongation of the sheet 13, and the three-dimensionally formed conductive linear body 22 has a shape close to a straight line at any portion. Can be adjusted.
  • the sheet 13 having the corrugated first part 22AA to the third part 22CC can also suppress the deterioration of the sheet function.
  • 13AA indicates the region of the sheet 13 having the first portion 22AA
  • 13BB indicates the region of the sheet 13 having the second portion 22BB
  • 13CC indicates the region of the sheet 13 having the third portion 22CC.
  • the conductive linear body 22 may have a first portion, a second portion, and a third portion that are different in both wavelength and amplitude.
  • the conductive linear body 22 is not limited to the above embodiment, and has a wave-shaped first portion having a wavelength ⁇ 1 and an amplitude A1, and a wavelength ⁇ 2 and an amplitude A2 different from at least one of the wavelength ⁇ 1 and the amplitude A1 of the first portion. What is necessary is just an aspect which is a linear body having a wavy second portion.
  • the conductive linear body 22 is adjusted in accordance with the shape of the molded product, so that the wavelength and amplitude of each part are different.
  • the conductive linear body may have a linear part.
  • part may differ in steps, and may differ gradually.
  • the sheet 10 according to the present embodiment can have various configurations according to the purpose.
  • the sheet 10 according to the present embodiment may be a sheet in which a plurality of pseudo sheet structures 20 are arranged in the sheet surface direction (direction along the sheet surface).
  • the plurality of pseudo sheet structures may be arranged in parallel in the direction in which the conductive linear bodies 22 extend, or may be arranged so as to intersect each other.
  • a pressure-sensitive adhesive sheet was prepared by providing an acrylic pressure-sensitive adhesive layer (pressure-sensitive adhesive layer) having a thickness of 20 ⁇ m as an adhesive layer on a polypropylene film having a thickness of 100 ⁇ m as a resin protective layer.
  • the peel strength of the adhesive layer measured according to the method described above was 15 N / 25 mm.
  • the pressure-sensitive adhesive layer is wound around a drum member whose outer peripheral surface is made of rubber so that the surface of the pressure-sensitive adhesive layer faces outward, and there are no wrinkles.
  • the wire wound around the bobbin is attached to the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive sheet located near the end of the drum member, and then wound around the drum member while feeding the wire, and the drum member is gradually drummed.
  • the wire was moved in a direction parallel to the axis, and the wire was wound around the drum member while drawing a spiral at equal intervals.
  • a plurality of wires were provided on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive sheet while keeping the distance between adjacent wires constant, thereby forming a pseudo sheet structure made of wires.
  • the drum member was moved while vibrating, so that the wound wire drawn a wave shape.
  • the wires were provided at regular intervals, and the intervals were 1.7 mm. Further, the wavelength ⁇ (waveform pitch) of the corrugated wire was 30 mm, and the amplitude A was 30 mm.
  • a release film (trade name: SP-38130 (Lintec Corporation) is used as a release layer on the surface of the pseudo sheet structure of the pressure-sensitive adhesive sheet provided with the pseudo sheet structure (the surface where the adhesive layer is exposed between the wires). Manufactured)). Thereafter, the adhesive sheet was cut together with the pseudo sheet structure and the release film in parallel with the drum axis to obtain a three-dimensionally forming conductive sheet.
  • Example 2 Instead of the carbon-coated tungsten wire, a carbon nanotube thread (diameter: 14 ⁇ m) obtained by pulling out a sheet from a carbon nanotube forest and adding a twist is used, and instead of the adhesive sheet of Example 1, a thick resin protective layer is used.
  • a pressure-sensitive adhesive sheet in which an acrylic pressure-sensitive adhesive layer (pressure-sensitive adhesive layer) having a thickness of 20 ⁇ m is provided as an adhesive layer on a polypropylene film having a thickness of 100 ⁇ m (peeling force of the adhesive layer measured according to the method described above 10 N / 25 mm) was used in the same manner as in Example 1 to obtain a three-dimensionally forming conductive sheet.
  • Example 3 The thickness of the polypropylene film is 800 ⁇ m, the thickness of the adhesive layer is 70 ⁇ m, and a copper wire (diameter 70 ⁇ m, manufacturer name: Arcor Electronics, product name: Bare Copper Wire) is used instead of the carbon-coated tungsten wire.
  • a three-dimensionally forming conductive sheet was obtained in the same manner as in Example 1 except that the wire interval was 8 mm.
  • Example 1 A conductive sheet for three-dimensional molding was obtained in the same manner as in Example 1 except that the wire interval was 15 mm.
  • Example 2 A conductive sheet for three-dimensional molding was obtained in the same manner as in Example 1 except that the wire interval was 0.1 mm.
  • a test piece having a width of 25 mm was prepared from the conductive sheet for three-dimensional molding obtained in each example.
  • the test piece is adhered to the surface of the propylene plate with the adhesive layer 32 of the test piece facing each other.
  • a load was applied to the entire test piece, and after 30 minutes, a 180 ° peel test defined in JIS-Z0237 (2000) was performed.
  • the test piece was pulled in the direction of 180 ° at a speed of 300 mm / min, and the force (adhesive force) required for the test piece to peel from the propylene plate was measured.
  • the conditions for applying the load were also as described in the above JIS. If the measured adhesive strength was 1 N / 25 mm or more, it was evaluated as good, and if it was less than 1 N / 25 mm, it was evaluated as defective.
  • the three-dimensionally formed conductive sheet obtained in each example was covered with a semi-spherical molded product while being three-dimensionally formed to obtain a sample.
  • the obtained sample was placed in an environment of 25 ° C. for 5 minutes, and then a voltage of 12 V was applied to the pseudo sheet structure of the conductive sheet.
  • the surface temperature of the conductive sheet rose to 50 ° C., the case where the temperature distribution was not felt by placing a hand was evaluated as good, and the case where it was felt was evaluated as poor.
  • the three-dimensionally forming conductive sheet of this example is excellent in both sheet peeling evaluation and warm evaluation. Thereby, it turns out that the electroconductive sheet for three-dimensional shaping

Landscapes

  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Surface Heating Bodies (AREA)

Abstract

L'invention concerne une feuille conductrice pour moulage tridimensionnel, comprenant : une structure de pseudo-feuille pourvue d'une pluralité de corps linéaires conducteurs s'étendant dans une direction et agencés de sorte à maintenir une distance déterminée de 0,3 à 12,0 mm entre les corps linéaires conducteurs adjacents ; une couche de protection en résine disposée sur une surface de la structure de pseudo-feuille ; et une couche adhésive disposée entre la structure de pseudo-feuille et la couche protectrice en résine.
PCT/JP2017/042677 2016-11-28 2017-11-28 Feuille conductrice pour moulage tridimensionnel WO2018097322A1 (fr)

Priority Applications (2)

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CN201780073320.1A CN110024480A (zh) 2016-11-28 2017-11-28 三维成型用导电片
JP2018553022A JP7080183B2 (ja) 2016-11-28 2017-11-28 三次元成形用導電性シート

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Publication number Priority date Publication date Assignee Title
CN112640574A (zh) * 2018-08-29 2021-04-09 琳得科株式会社 带导电片的物品及其制造方法
CN113613895A (zh) * 2019-03-20 2021-11-05 琳得科株式会社 片状导电构件及其制造方法
EP3846583A4 (fr) * 2018-08-29 2022-08-17 Lintec Corporation Élément conducteur de type feuille

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JP5844996B2 (ja) * 2011-05-11 2016-01-20 日東電工株式会社 透明導電性積層体及びタッチパネル
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JPS475591Y1 (fr) * 1966-04-25 1972-02-26
JPH0532954Y2 (fr) * 1986-07-18 1993-08-23
JPH0513157A (ja) * 1991-06-28 1993-01-22 Toyobo Co Ltd 面状発熱体及びその製造方法
JP2004238509A (ja) * 2003-02-06 2004-08-26 Dainippon Ink & Chem Inc 電子機器用粘着フィルム
JP2016022857A (ja) * 2014-07-22 2016-02-08 株式会社デンソー 輻射ヒータ装置
JP2016143538A (ja) * 2015-01-30 2016-08-08 大日本印刷株式会社 網目状導電体、網目状導電体を備えた導電体付シートおよび網目状導電体を備えた発熱板

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Publication number Priority date Publication date Assignee Title
CN112640574A (zh) * 2018-08-29 2021-04-09 琳得科株式会社 带导电片的物品及其制造方法
EP3846584A4 (fr) * 2018-08-29 2022-05-25 Lintec Corporation Article doté d'une feuille conductrice et son procédé de fabrication
EP3846583A4 (fr) * 2018-08-29 2022-08-17 Lintec Corporation Élément conducteur de type feuille
TWI802744B (zh) * 2018-08-29 2023-05-21 日商琳得科股份有限公司 薄片狀導電構件
CN112640574B (zh) * 2018-08-29 2023-12-26 琳得科株式会社 带导电片的物品及其制造方法
CN113613895A (zh) * 2019-03-20 2021-11-05 琳得科株式会社 片状导电构件及其制造方法

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TW201833272A (zh) 2018-09-16
CN110024480A (zh) 2019-07-16
JPWO2018097322A1 (ja) 2019-10-17

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