WO2019216285A1 - Light-transmitting decorative sheet, illumination tool in which same is used, and method for manufacturing light-transmitting decorative sheet - Google Patents

Light-transmitting decorative sheet, illumination tool in which same is used, and method for manufacturing light-transmitting decorative sheet Download PDF

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Publication number
WO2019216285A1
WO2019216285A1 PCT/JP2019/018066 JP2019018066W WO2019216285A1 WO 2019216285 A1 WO2019216285 A1 WO 2019216285A1 JP 2019018066 W JP2019018066 W JP 2019018066W WO 2019216285 A1 WO2019216285 A1 WO 2019216285A1
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Prior art keywords
light
silicone rubber
decorative sheet
paper
transmitting
Prior art date
Application number
PCT/JP2019/018066
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French (fr)
Japanese (ja)
Inventor
小川　理
大 小川
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株式会社 コテック
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Publication of WO2019216285A1 publication Critical patent/WO2019216285A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/06—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings

Definitions

  • the present invention relates to a light-transmitting decorative sheet, a lighting apparatus using the same, and a method for manufacturing the light-transmitting decorative sheet. More specifically, a colored sheet is provided on the base paper, and a light-transmitting decorative sheet that can transmit light by providing a light-transmitting layer on the front and back of the paper, a lighting apparatus using the same, and light transmission
  • the present invention relates to a method for manufacturing a decorative sheet.
  • the light-transmitting decorative sheet as described above can be attached to a lighting fixture, or used for interior decoration or display, for example, by allowing light to pass through a paper provided with a colored portion by printing and exhibiting an excellent design feeling. .
  • durability can be imparted to the paper by providing light-transmitting layers on the front and back of the paper.
  • a light-transmitting layer is provided, static electricity is charged at that portion, and dust is adsorbed, which impairs the design feeling.
  • an antistatic pressure-sensitive adhesive laminate as described in Patent Document 1 As an electrostatic removal sheet for preventing charging, for example, an antistatic pressure-sensitive adhesive laminate as described in Patent Document 1 is known. According to this document, a pressure-sensitive adhesive layer obtained by adding a polyether-based antistatic agent to a polyolefin-based substrate layer is provided. However, according to this document, it is pointed out that the adhesiveness of the adhesive layer is adjusted by the content of the ethylene- ⁇ -olefin copolymer, and in some cases, the effect of the antistatic agent cannot be obtained. .
  • the present invention is a light-transmitting decorative sheet that can remove static electricity and exhibit an excellent design feeling based on a principle different from the above-described conventional one, a lighting fixture using the same, and a light-transmitting decorative sheet It aims at providing the manufacturing method of.
  • the light-transmitting decorative sheet according to the present invention is characterized by a colored portion comprising an ink layer that can be continuously conducted on paper as a base material using an ink made of a conductive material. And a flexible and light-transmitting silicone rubber layer located on both sides of the conductive paper, and the silicone rubber of the silicone rubber layer impregnates the gaps between the fibers of the conductive paper. An impregnation part solidified in a state where the silicone rubber layer is communicated is provided, and the conductive paper is cut at least at one end part together with the two silicone rubber layers, and the ink layer is exposed at the end face.
  • a pattern as a colored portion by the ink is provided on the light transmission side of the paper as the base material, and the silicone rubber layer on the light transmission side is transparent.
  • the ink may contain fine particles of metal, a metal compound, or carbon.
  • the electric charge of the entire sheet be ⁇ 300V or less.
  • Japanese paper can be used as the base paper.
  • the sheet of the present invention has a light transmitting body made of a flat surface or a curved surface in front of the light source, and is preferably used by being attached to the light transmitting body.
  • the silicone rubber layer on the light source side has a lower hardness than the silicone rubber layer on the light transmission side, and may be stickable in a cured state. In this case, it is good also as a lighting fixture by having the light transmissive body which consists of a plane or a curved surface in front of a light source, and sticking the light transmissive decorative sheet in any one of the said to the transmission side of this light transmissive body.
  • the silicone rubber layer on the transmission side has a lower hardness than the silicone rubber layer on the light source side, and may be adhesive in a cured state.
  • a light transmissive body having a flat surface or a curved surface may be provided in front of the light source, and the light transmissive decorative sheet described above may be attached to the light source side of the light transmissive body to form a lighting fixture.
  • the method of manufacturing a flexible light-transmitting decorative sheet according to the present invention is characterized in that a base material is used between the first and second press plates using an ink made of a conductive material.
  • Conductive paper provided with a colored portion consisting of a continuous conductive ink layer on the paper and liquid silicone rubber on both sides of the conductive paper are arranged, and the space between the first and second press plates is added. Press the upper and lower liquid silicone rubber into the gap between the fibers of the conductive paper, and cure the entire liquid silicone rubber to solidify the pair of flexible silicone rubber layers and the impregnation part that communicates between the fibers. Then, it is preferable that the conductive paper is cut at least partially along with the pair of silicone rubber layers so that the ink layer of the conductive paper is exposed at the end face.
  • a liquid silicone rubber is applied to the surface of the first press plate, the conductive paper is disposed on the liquid silicone rubber, and the liquid silicone rubber is further applied on the conductive paper.
  • a second press plate may be disposed on the second liquid silicone rubber, and the space between the first and second press plates may be pressurized.
  • the lighting apparatus using the same, and the method of manufacturing the light-transmitting decorative sheet dust is prevented from adsorbing by removing static electricity using conductive paper, and an excellent design It became possible to present a feeling.
  • the light-transmitting decorative sheet 1 according to the present invention is used together with a luminaire main body 100, for example, as shown in FIG. As shown in FIG. 3, the light-transmitting decorative sheet 1 covers both sides of the Japanese paper 5 with the silicone rubber layers 2 and 3, and a pattern 31 by the ink layer 30 provided on the surface of the Japanese paper 5 appears on the outside.
  • the luminaire main body 100 houses a light source 102 inside a light transmitting body 101 formed of a translucent synthetic resin tube.
  • the first silicone rubber layer 2 has adhesiveness and is detachably attached to the outer surface 101a of the light transmitting body 101, and can be replaced with a light transmitting decorative sheet 1 (1A) having a different pattern 31 depending on taste.
  • the light-transmitting decorative sheet 1 as a whole is prevented from rolling up from the end face 8.
  • the second silicone rubber layer 3 is higher in transparency and hardness than the adhesive first silicone rubber layer 2. As a result, the color of the pattern 31 by the permeation of the Japanese paper 5 is improved, and dust adhesion is prevented.
  • the lighting fixture 110 is comprised by the lighting fixture main body 100 and the light transmission decoration sheet 1 (outside sticking light transmission decoration sheet 1A).
  • FIG. 2 (a) is an enlarged photograph of the longitudinal section of the sheet according to the present invention by an electron microscope
  • FIG. 2 (b) is a cross-section obtained by further enlarging a part of (a).
  • FIG. 3 is an enlarged longitudinal sectional view of the sheet according to the present invention schematically showing the photograph of FIG. 2 and 3, the range indicated by reference numerals 2 and 3 is a silicone rubber layer, and the range indicated by reference numeral 4 is a conductive paper portion.
  • the light-transmitting decorative sheet 1 includes conductive paper 4 and flexible silicone rubber layers 2 and 3 located on both sides of the conductive paper 4.
  • the silicone rubber of the silicone rubber layers 2 and 3 is impregnated in a gap 5b formed by intertwining a plurality of fibers 5a of a paper (Japanese paper 5) serving as a base of the conductive paper 4, and the silicone rubber layers 2 and 3 are in communication with each other.
  • a solidified impregnation portion 6 is provided.
  • the conductive paper 4 is a Japanese paper 5 made of plant fibers, and a pattern 31 as a colored portion by the ink layer 30 is provided on the surface of the Japanese paper 5 by printing.
  • the ink layer 30 is electrically conductive.
  • the Japanese paper 5 uses a fiber containing polysaccharides such as vegetable fiber or glucose such as cellulose mainly composed of cocoon, mitsumata, ganpi, etc. This polysaccharide-containing fiber has a long fiber length of 3 mm to 7 mm or more and has high self-adhesion and hydrophilicity between the fiber molecules. Therefore, the fibers are hydrogen-bonded and tightly entangled by drying after soaking in water. There are many gaps between tied fibers, and air permeability is excellent.
  • the silicone rubber layers 2 and 3 are obtained by curing a liquid silicone material, and once cured, the silicone rubber layers 2 and 3 are inactive to other substances.
  • the liquid silicone is impregnated into the gap 5b between the fibers 5a of the Japanese paper 5 which is the conductive paper 4, and is integrated between the pair of silicone rubber layers 2 and 3. Therefore, a pair of silicone rubber layers 2 and 3 that are inert and are difficult to be laminated and bonded together are integrated with the conductive paper 4 to form a laminate that is extremely unlikely to peel off.
  • an ink containing a metal, a metal compound or carbon fine particles as a pigment can be used, and a conductive colored portion is obtained.
  • the printing method can be appropriately selected from offset, gravure, silk screen printing, and the like. If the ink layer 30 is thick, the gap 5b between the fibers 5a is closed, but the gap 5b remains where the ink tone is low. Therefore, as shown in FIG. 3B, the impregnated portion 6 exists in communication with the non-printed portion indicated by reference numeral 6a and also on the printed portion indicated by reference numeral 6b, and conducts conductivity described later.
  • FIGS. 4 and 6 also show examples of printing using carbon fine particles as shown in FIG. 5 as pigments.
  • the fibers 5a of the Japanese paper 5 are very long and continuous, and the carbon fine particles 9 are adhered in a dense state. Therefore, the Japanese paper 5 provided with the ink layer 30 containing the carbon fine particles has high conductivity through the long continuous fibers 5a and the carbon fine particles 9 on the surface thereof.
  • the paper used as the base material of the conductive paper 4 is a paper (nonwoven fabric) using chemical fibers in addition to the Japanese paper 5 as long as the ink pigment adheres in a dense state and can give tear resistance as a whole sheet. But you can.
  • chemical fibers regenerated fibers such as rayon and cupra, semi-synthetic fibers such as acetate, and synthetic fibers such as polyester and nylon can be used.
  • the silicone rubber layers 2 and 3 have high surface resistance and excellent insulation, short-circuiting is unlikely to occur even in a minute range of electronic components. Moreover, the collected static electricity is dissipated to the conductive paper 4 through the impregnated portion 6 that has entered and solidified in the gap 5b of the fiber 5a in the vicinity thereof, and a charge is caused to flow along the ink layer 30 of the conductive paper 4.
  • the end face 8 of the light transmitting decorative sheet 1 is cut together with the pair of silicone rubber layers 2 and 3, the ink layer 30 and the conductive paper 4, and the end face of the conductive paper 4 is exposed to the outside. Static electricity is dissipated into the air from the ink layer 30 of the conductive paper 4 exposed in the air at the end face 8, and the charge of the light-transmitting decorative sheet 1 is lowered and the static electricity is removed.
  • the silicone rubber layers 2 and 3 can be given appropriate flexibility by selecting the viscosity of the liquid silicone that is a raw material, and can prevent the occurrence of slippage with parts and the like.
  • the light-transmitting decorative sheet 1 can be adhered and held on a synthetic resin, glass, metal surface or the like by imparting appropriate adhesiveness. Even if it has adhesiveness, it is inactive and integrated as described above, and therefore, delamination does not easily occur.
  • One layer 2 of the two silicone rubber layers 2 and 3 may be made of a material having higher adhesiveness than that of the other layer 3.
  • the lower silicone rubber layer 2 that adheres (adsorbs) to the table or the like is made of a highly adhesive (adsorbent) material
  • the silicone rubber layer 3 on the upper surface is made of a low-adhesive material to transmit light to the table.
  • the decorative sheet 1 can be pasted and work can be performed on it.
  • the silicone rubber layers 2 and 3 are base materials having a high degree of inertness to other substances, they can be peeled cleanly even if they are adhered.
  • the pigment of the ink layer 30 of the conductive paper 4 is desirably not separated from the fiber 5a as much as possible, and is firmly adhered to the Japanese paper 5 using a synthetic resin medium (binder) such as acrylic or PVA. Further, the fibers 5a of the Japanese paper 5 form a strong network by hydrogen bonding, and therefore, the fibers 5a are unlikely to be separated from each other and continue to maintain conductivity through contact between the pigments of the ink layer 30. Further, since the silicone rubber layers 2 and 3 and the impregnated portion 6 enter the gap 5b of the Japanese paper 5, the pigment of the ink layer 30 and the fibers 5a to which the ink layer 30 is attached are not separated.
  • the light-transmitting decorative sheet is a liquid silicone disposed on both surfaces of the conductive paper 4 between the first and second press plates 21 and 22 having a mirror-like inner surface using a press machine 20.
  • the rubber is cured under pressure and heat.
  • liquid silicone rubber a two-component curable silicone rubber using platinum as a catalyst and a silane compound as a curing agent can be used.
  • the viscosity of the liquid silicone rubber is desirably 700 Pa ⁇ s or less. More preferably, the viscosity of the liquid silicone rubber is 10 Pa ⁇ s or more and 250 Pa ⁇ s or less. This is because if the viscosity of the liquid silicone rubber exceeds 250 Pa ⁇ s, a problem may occur in the silicone impregnation depending on the conductive paper.
  • a liquid silicone rubber 2 ′ is applied to the surface of the first press plate 21, and as shown in FIG. 7B, a conductive paper is placed on the liquid silicone rubber 2 ′. 4 is arranged. As shown in FIG. 7 (c), a liquid silicone rubber 3 ′ is further applied on the conductive paper 4, and as shown in FIG. 7 (d), a second liquid silicone rubber 3 ′ is applied on the second liquid silicone rubber 3 ′.
  • a press plate 22 is arranged.
  • the press heads 23 and 23 are brought close to each other, and the first and second press plates 21 and 22 are pressurized under heating.
  • the pressure of the press is set to 5 kg / cm 2 or more and 100 kg / cm 2 or less.
  • the liquid silicone rubber of the silicone rubber layers 2 and 3 is impregnated in the gap 5b of the fibers 5a of the conductive paper 4 and the two silicone rubber layers 2 and 3 are used.
  • the pressure of the press is preferably 5 kg / cm 2 or more and 30 kg / cm 2 or less. This is because if the press pressure is too low, a smooth sheet cannot be formed, and if the press pressure is too high, the conductive paper 4 may tear without being able to withstand the pressure. Heating can promote the reaction of the two liquid silicone rubbers.
  • a sheet 10 for producing the light-transmitting decorative sheet 1 having the insulating edge 11 around is manufactured as shown in FIG.
  • the conductive paper 4 is not exposed to the end face, and insulation is ensured.
  • the insulating edge 11 is cut and removed together with the conductive paper 4 as shown in FIG. 8B in a part of the preparation sheet 10, so that the above-described charge is released into the air. Therefore, a part of the insulating edge 11 may be selected and cut according to the use environment.
  • FIG. 9 is an embodiment different from FIG. In the previous embodiment, it is detachably attached to the outer surface 101a of the light transmissive body 101. In the embodiment of FIG. 9, it is detachably attached to the inner surface 101b of the light transmissive body 101. In this case, the light transmitting body 101 is desirably colorless or colored transparent or milky white.
  • the second silicone rubber layer 3 uses a silicone having a higher adhesiveness than the adhesive first silicone rubber layer 2.
  • the first silicone rubber layer 2 is made of silicone having a higher hardness than the second silicone rubber layer 3. Thereby, adhesion of dust is prevented.
  • the shape of the light transmitting body 101 may be a flat surface, an assembly of flat surfaces, or a curved surface other than a cylinder, and the pasting surface may be an outer surface or an inner surface.
  • the cut shape in plan view of the end surface portion of the light-transmitting decorative sheet 1 is linear in each of the above-described embodiments, but has a saw-like shape, a curved shape, etc. as shown in FIGS. 10 (a) to 10 (c).
  • the tip shown by reference numeral 8c in FIG. The area of the end face 8 per unit length can be increased, and the charge dissipation efficiency is improved.
  • the ink layer 30 is layered on the surface of the Japanese paper 5, but the colored paper 31 may be formed by impregnating the Japanese paper 5 with the ink and integrating the ink layer 30 and the Japanese paper 5. Absent.
  • the above embodiments and examples of use can be implemented in combination with modifications and each other without departing from the spirit of the present invention.
  • the light-transmitting decorative sheet 1 can be changed as appropriate depending on whether the surface to be attached is different depending on the inner or outer surface or the location, the size, the insulating edge 11 is cut or removed on all sides, or part thereof. Further, the light transmission decorative sheet 1 may be used by being punched into an arbitrary shape such as a round shape or a star shape.
  • the light-transmitting decorative sheet according to the present invention can be attached to a lighting fixture or used for interior decoration or a display, for example, to transmit light to a paper provided with a colored portion by printing, thereby exhibiting an excellent design feeling. it can.
  • 1 light-transmitting decorative sheet
  • 1A outer-applied light-transmitting decorative sheet
  • 1B inner-applied light-transmitting decorative sheet
  • 2 first silicone rubber layer
  • 3 second silicone rubber layer
  • 2 ′ liquid Silicone rubber
  • 4 conductive paper
  • 5 Japanese paper
  • 5a fiber
  • 5b gap
  • 6 impregnated part
  • 8 end face
  • 8a to c cut shape in plan view of the end face part
  • 9 fine particles of carbon
  • 10 , 10 ' preparation sheet
  • 11 insulating edge
  • 20 press machine
  • 21 first press plate
  • 22 second press plate
  • 23 press head
  • 30 ink layer
  • 31 colored portion (pattern)
  • 100 luminaire main body
  • 101 light transmitting body
  • 101a outer surface
  • 101b inner surface
  • 102 light source
  • 110 luminaire

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Provided is a light-transmitting decorative sheet, etc., with which it is possible to eliminate static electricity under a different principle than in the past and to achieve exceptional design sense. The present invention is provided with: an electroconductive paper (4) in which a colored part formed from an ink layer (30) capable of conducting electricity is provided in a continuous manner on a paper (5) that serves as a substrate, through use of an ink formed from an electroconductive substance; and flexible, light-transmitting silicone rubber layers (2), (3) provided to both surfaces of the electroconductive paper (4). The present invention is also provided with an impregnation part (6) in which gaps (5b) between fibers (5a) in the electroconductive paper (4) are impregnated with the silicone rubber of the silicone rubber layers (2), (3), and in which the two silicone rubber layers (2), (3) are secured in a communicated state. The electroconductive paper (4) is cut, together with the two silicone rubber layers (2), (3), at least at part of an end portion thereof, and the ink layer (30) is exposed at an end surface (8).

Description

光透過装飾シート、これを用いた照明器具及び光透過装飾シートの製造方法Light transmissive decorative sheet, lighting fixture using the same, and method of manufacturing light transmissive decorative sheet
　本発明は、光透過装飾シート、これを用いた照明器具及び光透過装飾シートの製造方法に関する。さらに詳しくは、基材となる紙に着色部を設け、この紙の表裏に光透過性の層を設けて光を透過させることの可能な光透過装飾シート、これを用いた照明器具及び光透過装飾シートの製造方法に関する。 The present invention relates to a light-transmitting decorative sheet, a lighting apparatus using the same, and a method for manufacturing the light-transmitting decorative sheet. More specifically, a colored sheet is provided on the base paper, and a light-transmitting decorative sheet that can transmit light by providing a light-transmitting layer on the front and back of the paper, a lighting apparatus using the same, and light transmission The present invention relates to a method for manufacturing a decorative sheet.
　上述のごとき光透過装飾シートは、照明器具に貼付したり、室内装飾やディスプレイに用いることで、例えば印刷により着色部を設けた紙に光を透過させて、優れた意匠感を呈することができる。この場合、光透過性の層を紙の表裏に設けることで、紙に耐久性を付与することができる。
　しかし、光透過性の層を設けると、その部分に静電気が帯電して埃が吸着し、意匠感を損ねることとなる。 The light-transmitting decorative sheet as described above can be attached to a lighting fixture, or used for interior decoration or display, for example, by allowing light to pass through a paper provided with a colored portion by printing and exhibiting an excellent design feeling. . In this case, durability can be imparted to the paper by providing light-transmitting layers on the front and back of the paper.
However, when a light-transmitting layer is provided, static electricity is charged at that portion, and dust is adsorbed, which impairs the design feeling.
　一方、帯電を防止する静電除去シートとしては、例えば、特許文献１に記載のごとき静電気防止粘着積層体が知られている。同文献によれば、ポリオレフィン系の基材層にポリエーテル系帯電防止剤を添加した粘着剤層を設けている。
　しかし、同文献によれば、粘着剤層の粘着度はエチレン－α－オレフィン共重合体の含有率で調整されており、場合によっては帯電防止剤の効果も得られなくなることが指摘されている。 On the other hand, as an electrostatic removal sheet for preventing charging, for example, an antistatic pressure-sensitive adhesive laminate as described in Patent Document 1 is known. According to this document, a pressure-sensitive adhesive layer obtained by adding a polyether-based antistatic agent to a polyolefin-based substrate layer is provided.
However, according to this document, it is pointed out that the adhesiveness of the adhesive layer is adjusted by the content of the ethylene-α-olefin copolymer, and in some cases, the effect of the antistatic agent cannot be obtained. .
特開２０１１－７９２６４号公報JP 2011-79264 A
　かかる従来の実情に鑑みて、本発明は、上述の従来とは異なる原理で静電気を除去し、優れた意匠感を呈することのできる光透過装飾シート、これを用いた照明器具及び光透過装飾シートの製造方法を提供することを目的とする。 In view of such a conventional situation, the present invention is a light-transmitting decorative sheet that can remove static electricity and exhibit an excellent design feeling based on a principle different from the above-described conventional one, a lighting fixture using the same, and a light-transmitting decorative sheet It aims at providing the manufacturing method of.
　上記目的を達成するため、本発明に係る光透過装飾シートの特徴は、導電性を有する物質よりなるインキを用いて基材となる紙の上に連続して導電可能なインキ層よりなる着色部を設けた導電紙と、前記導電紙の両面に位置する可撓性且つ光透過性のシリコーンゴム層とを備え、前記シリコーンゴム層のシリコーンゴムは前記導電紙の繊維の隙間に含浸すると共に両シリコーンゴム層を連通した状態で固化した含浸部を備え、前記導電紙が前記両シリコーンゴム層と共に少なくとも一部端部において切断されて前記インキ層が端面に露出していることにある。 In order to achieve the above object, the light-transmitting decorative sheet according to the present invention is characterized by a colored portion comprising an ink layer that can be continuously conducted on paper as a base material using an ink made of a conductive material. And a flexible and light-transmitting silicone rubber layer located on both sides of the conductive paper, and the silicone rubber of the silicone rubber layer impregnates the gaps between the fibers of the conductive paper. An impregnation part solidified in a state where the silicone rubber layer is communicated is provided, and the conductive paper is cut at least at one end part together with the two silicone rubber layers, and the ink layer is exposed at the end face.
　上記構成において、前記基材となる紙の光透過側に前記インキによる着色部としての絵柄を設けてあり、同光透過側の前記シリコーンゴム層を透明とするとよい。前記インキは、金属、金属の化合物またはカーボンの微粒子を含んでいるとよい。 In the above configuration, it is preferable that a pattern as a colored portion by the ink is provided on the light transmission side of the paper as the base material, and the silicone rubber layer on the light transmission side is transparent. The ink may contain fine particles of metal, a metal compound, or carbon.
　シート全体の電荷が±３００Ｖ以下とすることが望ましい。基材となる紙には和紙を用いることができる。 It is desirable that the electric charge of the entire sheet be ± 300V or less. Japanese paper can be used as the base paper.
　本発明のシートは、光源の前に平面または曲面よりなる光透過体を有し、この光透過体に貼り付けて用いるとよい。 The sheet of the present invention has a light transmitting body made of a flat surface or a curved surface in front of the light source, and is preferably used by being attached to the light transmitting body.
　光源側の前記シリコーンゴム層は、光透過側の前記シリコーンゴム層よりも硬度が低く、硬化状態で粘着可能としてもよい。この場合、光源の前に平面または曲面よりなる光透過体を有し、この光透過体の透過側に上記いずれかに記載の光透過装飾シートを貼り付けて照明器具としてもよい。 The silicone rubber layer on the light source side has a lower hardness than the silicone rubber layer on the light transmission side, and may be stickable in a cured state. In this case, it is good also as a lighting fixture by having the light transmissive body which consists of a plane or a curved surface in front of a light source, and sticking the light transmissive decorative sheet in any one of the said to the transmission side of this light transmissive body.
　一方、透過側の前記シリコーンゴム層は、光源側の前記シリコーンゴム層よりも硬度が低く、硬化状態で粘着可能としてもよい。この場合、光源の前に平面または曲面よりなる光透過体を有し、この光透過体の光源側に上記いずれかに記載の光透過装飾シートを貼り付けて照明器具としてもよい。 On the other hand, the silicone rubber layer on the transmission side has a lower hardness than the silicone rubber layer on the light source side, and may be adhesive in a cured state. In this case, a light transmissive body having a flat surface or a curved surface may be provided in front of the light source, and the light transmissive decorative sheet described above may be attached to the light source side of the light transmissive body to form a lighting fixture.
　上記目的を達成するため、本発明に係る可撓性を有する光透過装飾シートの製造方法の特徴は、第一、第二プレス板の間に、導電性を有する物質よりなるインキを用いて基材となる紙の上に連続して導電可能なインキ層よりなる着色部を設けた導電紙と、前記導電紙の両面に液状のシリコーンゴムとを配置し、前記第一、第二プレス板間を加圧して上下の液状シリコーンゴムを前記導電紙の繊維の隙間に含浸させ、液状シリコーンゴム全体を硬化させて一対の可撓性のシリコーンゴム層及び前記繊維間を連通する含浸部を固化させて形成し、前記導電紙を前記一対のシリコーンゴム層と共に少なくとも一部端部において切断し、前記導電紙の前記インキ層を端面に露出させるとよい。 In order to achieve the above object, the method of manufacturing a flexible light-transmitting decorative sheet according to the present invention is characterized in that a base material is used between the first and second press plates using an ink made of a conductive material. Conductive paper provided with a colored portion consisting of a continuous conductive ink layer on the paper and liquid silicone rubber on both sides of the conductive paper are arranged, and the space between the first and second press plates is added. Press the upper and lower liquid silicone rubber into the gap between the fibers of the conductive paper, and cure the entire liquid silicone rubber to solidify the pair of flexible silicone rubber layers and the impregnation part that communicates between the fibers. Then, it is preferable that the conductive paper is cut at least partially along with the pair of silicone rubber layers so that the ink layer of the conductive paper is exposed at the end face.
　同製造方法の特徴において、前記第一プレス板の表面に液状のシリコーンゴムを塗布し、その液状シリコーンゴムの上に前記導電紙を配置し、その導電紙の上に液状シリコーンゴムをさらに塗布し、二番目の液状シリコーンゴムの上に第二プレス板を配置し、前記第一、第二プレス板間を加圧してもよい。 In the manufacturing method, a liquid silicone rubber is applied to the surface of the first press plate, the conductive paper is disposed on the liquid silicone rubber, and the liquid silicone rubber is further applied on the conductive paper. A second press plate may be disposed on the second liquid silicone rubber, and the space between the first and second press plates may be pressurized.
　上記本発明に係る光透過装飾シート、これを用いた照明器具及び光透過装飾シートの製造方法の特徴によれば、導電紙を用いて静電気を除去することで埃の吸着を防ぎ、優れた意匠感を呈することが可能となった。 According to the characteristics of the light-transmitting decorative sheet according to the present invention, the lighting apparatus using the same, and the method of manufacturing the light-transmitting decorative sheet, dust is prevented from adsorbing by removing static electricity using conductive paper, and an excellent design It became possible to present a feeling.
　本発明の他の目的、構成及び効果については、以下の発明の実施の形態の項から明らかになるであろう。 Other objects, configurations, and effects of the present invention will be apparent from the following embodiments of the present invention.
本発明に係るシートを使用した照明器具を示す斜視図である。It is a perspective view which shows the lighting fixture using the sheet | seat which concerns on this invention. 本発明に係るシートの縦断面の電子顕微鏡による拡大写真であり、（ａ）は拡大倍率１００倍、（ｂ）は（ａ）の一部をさらに拡大した拡大倍率５００倍のものである。It is an enlarged photograph with the electron microscope of the longitudinal cross-section of the sheet | seat which concerns on this invention, (a) is 100 times of magnification, (b) is a thing of 500 times of magnification that further expanded a part of (a). 本発明に係るシートの拡大縦断面図である。It is an expansion longitudinal cross-sectional view of the sheet | seat which concerns on this invention. 本発明に係るシートに用いられる和紙の顕微鏡写真（倍率５００倍）であり、（ａ）は縦断面、（ｂ）は平面である。It is a microscope picture (500 times magnification) of Japanese paper used for the sheet concerning the present invention, (a) is a longitudinal section and (b) is a plane. カーボン粒子の状態を示す電子顕微鏡写真（倍率１００，０００倍）である。It is an electron micrograph (magnification 100,000 times) showing the state of carbon particles. 和紙の繊維とカーボン粒子の関係を示す概念図である。It is a conceptual diagram which shows the relationship between a Japanese paper fiber and carbon particles. プレス機による製造工程を示し、（ａ）は第一のシリコーンゴム層の材料を設けたところ、（ｂ）は導電紙を設けたところ、（ｃ）第二のシリコーンゴム層の材料を設けたところ、（ｄ）は加熱下で加圧を行うところである。The manufacturing process by a press machine is shown, (a) is provided with the material of the first silicone rubber layer, (b) is provided with the conductive paper, (c) is provided with the material of the second silicone rubber layer. However, (d) is where pressure is applied under heating. （ａ）は図７による生産物（作成用シート）の平面図、（ｂ）はその一辺をカットする状態を示す図である。(A) is a top view of the product (sheet for preparation) by FIG. 7, (b) is a figure which shows the state which cuts the one side. 本発明に係るシートを使用した照明器具の他の実施形態を示す斜視図である。It is a perspective view which shows other embodiment of the lighting fixture using the sheet | seat which concerns on this invention. 本発明に係るシートの端面部分の切断形状を示す平面図であって、（ａ）はのこぎり状、（ｂ）は他ののこぎり状、（ｃ）は先端を丸めたのこぎり状の例をそれぞれ示すものである。It is a top view which shows the cutting shape of the end surface part of the sheet | seat which concerns on this invention, Comprising: (a) is a saw shape, (b) is another saw shape, (c) shows the saw-shaped example which rounded the front-end | tip. Is.
　次に、適宜添付図面を参照しながら、本発明をさらに詳しく説明する。
　本発明に係る光透過装飾シート１は、例えば図１に示すように、照明器具本体１００とともに用いられる。光透過装飾シート１は、図３に示すように、和紙５の両面をシリコーンゴム層２，３で覆い、和紙５の表面に印刷で設けられたインキ層３０による絵柄３１が外側に現れる。 Next, the present invention will be described in more detail with reference to the accompanying drawings as appropriate.
The light-transmitting decorative sheet 1 according to the present invention is used together with a luminaire main body 100, for example, as shown in FIG. As shown in FIG. 3, the light-transmitting decorative sheet 1 covers both sides of the Japanese paper 5 with the silicone rubber layers 2 and 3, and a pattern 31 by the ink layer 30 provided on the surface of the Japanese paper 5 appears on the outside.
　 照明器具本体１００は、半透明の合成樹脂製の筒で構成される光透過体１０１の内部に光源１０２を収納している。第一のシリコーンゴム層２は粘着性を有し、光透過体１０１の外面１０１ａに着脱自在に貼り付けられ、嗜好によって先の絵柄３１の異なる光透過装飾シート１（１Ａ）に交換が可能となり、さらに、光透過装飾シート１全体の端面８からのまくれ上がりを防止している。 The luminaire main body 100 houses a light source 102 inside a light transmitting body 101 formed of a translucent synthetic resin tube. The first silicone rubber layer 2 has adhesiveness and is detachably attached to the outer surface 101a of the light transmitting body 101, and can be replaced with a light transmitting decorative sheet 1 (1A) having a different pattern 31 depending on taste. In addition, the light-transmitting decorative sheet 1 as a whole is prevented from rolling up from the end face 8.
　第二のシリコーンゴム層３は粘着性の第一のシリコーンゴム層２よりも透明度及び硬度の高いものを用いている。これにより、和紙５の透過による絵柄３１の発色をより優れたものとすると共に、埃の粘着を防ぐ。照明器具本体１００と光透過装飾シート１（外貼光透過装飾シート１Ａ）とで照明器具１１０を構成している。 The second silicone rubber layer 3 is higher in transparency and hardness than the adhesive first silicone rubber layer 2. As a result, the color of the pattern 31 by the permeation of the Japanese paper 5 is improved, and dust adhesion is prevented. The lighting fixture 110 is comprised by the lighting fixture main body 100 and the light transmission decoration sheet 1 (outside sticking light transmission decoration sheet 1A).
　図２（ａ）は本発明に係るシートの縦断面の電子顕微鏡による拡大写真、同図（ｂ）は（ａ）の一部をさらに拡大した断面である。また、図３は図２の写真を模式的に表示した本発明に係るシートの拡大縦断面図である。図２，３において、符号２，３で示す範囲はシリコーンゴム層、符号４で示す範囲は導電紙の部分である。 2 (a) is an enlarged photograph of the longitudinal section of the sheet according to the present invention by an electron microscope, and FIG. 2 (b) is a cross-section obtained by further enlarging a part of (a). FIG. 3 is an enlarged longitudinal sectional view of the sheet according to the present invention schematically showing the photograph of FIG. 2 and 3, the range indicated by reference numerals 2 and 3 is a silicone rubber layer, and the range indicated by reference numeral 4 is a conductive paper portion.
　光透過装飾シート１は、導電紙４と、この導電紙４の両面に位置する可撓性のシリコーンゴム層２，３とを備える。シリコーンゴム層２，３のシリコーンゴムは導電紙４の基材となる紙（和紙５）の複数の繊維５ａが絡み合ってできる隙間５ｂに含浸すると共に両シリコーンゴム層２，３を連通した状態で固化した含浸部６を備える。 The light-transmitting decorative sheet 1 includes conductive paper 4 and flexible silicone rubber layers 2 and 3 located on both sides of the conductive paper 4. The silicone rubber of the silicone rubber layers 2 and 3 is impregnated in a gap 5b formed by intertwining a plurality of fibers 5a of a paper (Japanese paper 5) serving as a base of the conductive paper 4, and the silicone rubber layers 2 and 3 are in communication with each other. A solidified impregnation portion 6 is provided.
　図１，３、４～６に示すように、導電紙４は、植物繊維を抄いた和紙５に、インキ層３０による着色部としての絵柄３１を印刷で和紙５の表面に設けたものであり、このインキ層３０を通じて導電性を有する。和紙５は、楮（こうぞ）、三椏（みつまた）、雁皮（がんぴ）などを主成分とする植物繊維もしくはセルロースなどのブドウ糖などの多糖類を含む繊維を使用する。この多糖類を含む繊維は繊維長が３ｍｍ～７ｍｍ以上と長く、繊維分子同士の自己接着性や親水性が高いため、水に浸し漉いた後に乾燥する事で繊維同士が水素結合し強固に絡み合い結びつき繊維間の隙間が多く、通気性に優れる。 As shown in FIGS. 1, 3, 4 to 6, the conductive paper 4 is a Japanese paper 5 made of plant fibers, and a pattern 31 as a colored portion by the ink layer 30 is provided on the surface of the Japanese paper 5 by printing. The ink layer 30 is electrically conductive. The Japanese paper 5 uses a fiber containing polysaccharides such as vegetable fiber or glucose such as cellulose mainly composed of cocoon, mitsumata, ganpi, etc. This polysaccharide-containing fiber has a long fiber length of 3 mm to 7 mm or more and has high self-adhesion and hydrophilicity between the fiber molecules. Therefore, the fibers are hydrogen-bonded and tightly entangled by drying after soaking in water. There are many gaps between tied fibers, and air permeability is excellent.
　シリコーンゴム層２，３は、液状のシリコーン材料を硬化させたものであり、いったん硬化すると、他の物質に対して不活性を呈する。しかし、液状のシリコーンは導電紙４である和紙５の繊維５ａの隙間５ｂに含浸して、一対のシリコーンゴム層２，３間にまたがって一体化する。したがって、不活性で本来は積層接着しにくい一対のシリコーンゴム層２，３を、導電紙４とともに一体化させて剥離をきわめて起こしにくい積層体としている。 The silicone rubber layers 2 and 3 are obtained by curing a liquid silicone material, and once cured, the silicone rubber layers 2 and 3 are inactive to other substances. However, the liquid silicone is impregnated into the gap 5b between the fibers 5a of the Japanese paper 5 which is the conductive paper 4, and is integrated between the pair of silicone rubber layers 2 and 3. Therefore, a pair of silicone rubber layers 2 and 3 that are inert and are difficult to be laminated and bonded together are integrated with the conductive paper 4 to form a laminate that is extremely unlikely to peel off.
　ここに用いるインキは、金属、金属の化合物またはカーボンの微粒子を顔料として含んだものを用いることができ、導電可能な着色部となる。印刷の方式は、オフセット、グラビア、シルクスクリーン印刷等適宜選択することができる。インキ層３０が厚ければ繊維５ａの隙間５ｂは塞がるが、インキの諧調が低いところでは隙間５ｂが残存する。したがって、図３（ｂ）に示すように、含侵部６は符号６ａに示す非印刷部でも、符号６ｂに示す印刷部上でも連通して存在し、後述の導電を行う。 As the ink used here, an ink containing a metal, a metal compound or carbon fine particles as a pigment can be used, and a conductive colored portion is obtained. The printing method can be appropriately selected from offset, gravure, silk screen printing, and the like. If the ink layer 30 is thick, the gap 5b between the fibers 5a is closed, but the gap 5b remains where the ink tone is low. Therefore, as shown in FIG. 3B, the impregnated portion 6 exists in communication with the non-printed portion indicated by reference numeral 6a and also on the printed portion indicated by reference numeral 6b, and conducts conductivity described later.
　図５に示すようなカーボンの微粒子を顔料に用いて印刷を行った場合の例を図４、６にも示す。和紙５の繊維５ａは非常に長く連続しており、カーボンの微粒子９が密集状態で付着している。したがって、カーボンの微粒子を含むインキ層３０を設けた和紙５は、長く連続する繊維５ａとその表面のカーボンの微粒子９を通じ、その全体において導電性が高い。 FIGS. 4 and 6 also show examples of printing using carbon fine particles as shown in FIG. 5 as pigments. The fibers 5a of the Japanese paper 5 are very long and continuous, and the carbon fine particles 9 are adhered in a dense state. Therefore, the Japanese paper 5 provided with the ink layer 30 containing the carbon fine particles has high conductivity through the long continuous fibers 5a and the carbon fine particles 9 on the surface thereof.
　導電紙４の基材となる紙は、インキの顔料が密集状態で付着するとともに、シート全体としての引き裂き耐久性を付与できるのであれば、和紙５以外に、化学繊維を用いた紙（不織布）でもよい。化学繊維としては、レーヨンやキュプラなどの再生繊維、アセテートなどの半合成繊維、ポリエステルやナイロンなど合成繊維を用いることができる。 The paper used as the base material of the conductive paper 4 is a paper (nonwoven fabric) using chemical fibers in addition to the Japanese paper 5 as long as the ink pigment adheres in a dense state and can give tear resistance as a whole sheet. But you can. As chemical fibers, regenerated fibers such as rayon and cupra, semi-synthetic fibers such as acetate, and synthetic fibers such as polyester and nylon can be used.
　シリコーンゴム層２，３は、表面抵抗が高く絶縁性に優れているため、電子部品の微小範囲間でも短絡を起こしにくい。しかも、集めた静電気を、その近傍で繊維５ａの隙間５ｂに入り込んで固化している含浸部６を通じて導電紙４に放散させ、導電紙４のインキ層３０に沿って電荷を流す。光透過装飾シート１の端面８は、一対のシリコーンゴム層２，３、インキ層３０及び導電紙４とともに切断され、導電紙４の端面が外部に露出している。この端面８で空気中に露出した導電紙４のインキ層３０から静電気が空気中に放散され、その繰り返しで、光透過装飾シート１の電荷が下がり、静電気が除去されることとなる。 Since the silicone rubber layers 2 and 3 have high surface resistance and excellent insulation, short-circuiting is unlikely to occur even in a minute range of electronic components. Moreover, the collected static electricity is dissipated to the conductive paper 4 through the impregnated portion 6 that has entered and solidified in the gap 5b of the fiber 5a in the vicinity thereof, and a charge is caused to flow along the ink layer 30 of the conductive paper 4. The end face 8 of the light transmitting decorative sheet 1 is cut together with the pair of silicone rubber layers 2 and 3, the ink layer 30 and the conductive paper 4, and the end face of the conductive paper 4 is exposed to the outside. Static electricity is dissipated into the air from the ink layer 30 of the conductive paper 4 exposed in the air at the end face 8, and the charge of the light-transmitting decorative sheet 1 is lowered and the static electricity is removed.
　なお、インキ層３０の顔料の導電性能や絵柄３１の連続度による静電除去効果を確認するには、あらかじめ同絵柄の光透過装飾シート１全体の電荷が±３００Ｖ以下となっているかどうかを確認するとより確実であり、これを出荷検査とすることもできる。 In addition, in order to confirm the electroconductive performance of the pigment of the ink layer 30 and the electrostatic removal effect due to the continuity of the pattern 31, it is confirmed beforehand whether the charge of the entire light-transmitting decorative sheet 1 of the pattern is ± 300 V or less. This is more reliable, and this can be used as a shipping inspection.
　シリコーンゴム層２，３は、原料である液状シリコーンの粘度を選択することにより、適度な柔軟性を付与し、部品等との滑りの発生を防止することが可能である。また、適度な粘着性を付与することにより、合成樹脂、ガラス、金属面等にこの光透過装飾シート１を粘着保持させることも可能である。粘着性を有していても不活性で上述のごとく一体化しているため、層間の剥離も発生しにくい。 The silicone rubber layers 2 and 3 can be given appropriate flexibility by selecting the viscosity of the liquid silicone that is a raw material, and can prevent the occurrence of slippage with parts and the like. In addition, the light-transmitting decorative sheet 1 can be adhered and held on a synthetic resin, glass, metal surface or the like by imparting appropriate adhesiveness. Even if it has adhesiveness, it is inactive and integrated as described above, and therefore, delamination does not easily occur.
　両シリコーンゴム層２，３のうち一方の層２は他層３のものよりも粘着性の高い材料により構成してもよい。例えば、テーブル等に粘着（吸着）させる下層のシリコーンゴム層２を粘着性（吸着性）の高い材料とし、上面に来るシリコーンゴム層３を粘着性の低い材料とすることで、テーブルに光透過装飾シート１を貼り付け、その上で作業を行う等のことができる。なお、シリコーンゴム層２，３は他の物質に対する不活性の程度が高い基材であるため、粘着してもきれいに剥離させることができる。 One layer 2 of the two silicone rubber layers 2 and 3 may be made of a material having higher adhesiveness than that of the other layer 3. For example, the lower silicone rubber layer 2 that adheres (adsorbs) to the table or the like is made of a highly adhesive (adsorbent) material, and the silicone rubber layer 3 on the upper surface is made of a low-adhesive material to transmit light to the table. The decorative sheet 1 can be pasted and work can be performed on it. In addition, since the silicone rubber layers 2 and 3 are base materials having a high degree of inertness to other substances, they can be peeled cleanly even if they are adhered.
　導電紙４のインキ層３０の顔料は、できるだけ繊維５ａから離脱しないことが望ましく、アクリルやＰＶＡなどの合成樹脂のメジウム（バインダー）を利用して、和紙５に強固に密着させている。また、和紙５の繊維５ａ同士は水素結合により強固なネットワークを形成しており、そのため、互いに離脱しにくく、インキ層３０の顔料同士の接触を通じて導電性を維持しつづける。また、シリコーンゴム層２，３及び含浸部６が和紙５の隙間５ｂに入り込んでいるため、インキ層３０の顔料やこれの付着した繊維５ａも離脱しない。 The pigment of the ink layer 30 of the conductive paper 4 is desirably not separated from the fiber 5a as much as possible, and is firmly adhered to the Japanese paper 5 using a synthetic resin medium (binder) such as acrylic or PVA. Further, the fibers 5a of the Japanese paper 5 form a strong network by hydrogen bonding, and therefore, the fibers 5a are unlikely to be separated from each other and continue to maintain conductivity through contact between the pigments of the ink layer 30. Further, since the silicone rubber layers 2 and 3 and the impregnated portion 6 enter the gap 5b of the Japanese paper 5, the pigment of the ink layer 30 and the fibers 5a to which the ink layer 30 is attached are not separated.
　次に、光透過装飾シート１の製造工程について説明する。光透過装飾シートは、図７に示すように、プレス機２０を用い、内面が鏡面状である第一、第二プレス板２１，２２の間で、導電紙４の両面に配置位置した液状シリコーンゴムを加圧・加熱下で硬化させる。 Next, the manufacturing process of the light transmission decorative sheet 1 will be described. As shown in FIG. 7, the light-transmitting decorative sheet is a liquid silicone disposed on both surfaces of the conductive paper 4 between the first and second press plates 21 and 22 having a mirror-like inner surface using a press machine 20. The rubber is cured under pressure and heat.
　この液状シリコーンゴムは、白金を触媒、シラン系化合物を硬化剤とする２液硬化型のシリコーンゴムを用いることができる。また、液状シリコーンゴムの粘度は７００Ｐａ・ｓ以下が望ましい。さらに、好ましくは、液状シリコーンゴムの粘度は１０Ｐａ・ｓ以上２５０Ｐａ・ｓ以下であるとよい。液状シリコーンゴムの粘度が２５０Ｐａ・ｓを超えると、導電紙によってはシリコーンの含浸に問題の生じることがあるためである。 As this liquid silicone rubber, a two-component curable silicone rubber using platinum as a catalyst and a silane compound as a curing agent can be used. The viscosity of the liquid silicone rubber is desirably 700 Pa · s or less. More preferably, the viscosity of the liquid silicone rubber is 10 Pa · s or more and 250 Pa · s or less. This is because if the viscosity of the liquid silicone rubber exceeds 250 Pa · s, a problem may occur in the silicone impregnation depending on the conductive paper.
　まず、図７（ａ）に示すように、第一プレス板２１の表面に液状シリコーンゴム２’を塗布し、図７（ｂ）に示すように、その液状シリコーンゴム２’の上に導電紙４を配置する。図７（ｃ）に示すように、その導電紙４の上に液状シリコーンゴム３’をさらに塗布し、図７（ｄ）に示すように、二番目の液状シリコーンゴム３’の上に第二プレス板２２を配置する。 First, as shown in FIG. 7A, a liquid silicone rubber 2 ′ is applied to the surface of the first press plate 21, and as shown in FIG. 7B, a conductive paper is placed on the liquid silicone rubber 2 ′. 4 is arranged. As shown in FIG. 7 (c), a liquid silicone rubber 3 ′ is further applied on the conductive paper 4, and as shown in FIG. 7 (d), a second liquid silicone rubber 3 ′ is applied on the second liquid silicone rubber 3 ′. A press plate 22 is arranged.
　その後、プレスヘッド２３，２３を近接させて、第一、第二プレス板２１，２２間を加熱下で加圧する。プレスの圧力は５ｋｇ／ｃｍ2以上１００ｋｇ／ｃｍ2以下とすることで、シリコーンゴム層２，３の液状シリコーンゴムを導電紙４の繊維５ａの隙間５ｂに含浸すると共に両シリコーンゴム層２，３を連通した状態で固化させ、含浸部６を形成することができる。なお、好ましくは、プレスの圧力は５ｋｇ／ｃｍ2以上３０ｋｇ／ｃｍ2以下であるとよい。プレスの圧力が低すぎると平滑なシートが形成できず、プレスの圧力が高すぎると圧力に耐えきれずに導電紙４が裂けることがあるためである。
　加熱は上記２液の液状シリコーンゴムの反応を促進させることができる。 Then, the press heads 23 and 23 are brought close to each other, and the first and second press plates 21 and 22 are pressurized under heating. By setting the pressure of the press to 5 kg / cm 2 or more and 100 kg / cm 2 or less, the liquid silicone rubber of the silicone rubber layers 2 and 3 is impregnated in the gap 5b of the fibers 5a of the conductive paper 4 and the two silicone rubber layers 2 and 3 are used. Can be solidified in a communicating state to form the impregnated portion 6. The pressure of the press is preferably 5 kg / cm 2 or more and 30 kg / cm 2 or less. This is because if the press pressure is too low, a smooth sheet cannot be formed, and if the press pressure is too high, the conductive paper 4 may tear without being able to withstand the pressure.
Heating can promote the reaction of the two liquid silicone rubbers.
　上記工程により液状シリコーンゴムの固化が完了すると、図８の如く、絶縁縁部１１を周囲に有する、光透過装飾シート１の作成用シート１０が製造される。この絶縁縁部１１は、端面に導電紙４が露出しておらず、絶縁性が確保されている。しかも、作成用シート１０の一部において絶縁縁部１１を図８（ｂ）の如く導電紙４と共に切断除去することで、上述の空気中への電荷の放散はなされる。したがって、使用環境に応じて、絶縁縁部１１の一部を選択して切断するとよい。 When the solidification of the liquid silicone rubber is completed by the above process, a sheet 10 for producing the light-transmitting decorative sheet 1 having the insulating edge 11 around is manufactured as shown in FIG. As for this insulating edge part 11, the conductive paper 4 is not exposed to the end face, and insulation is ensured. In addition, the insulating edge 11 is cut and removed together with the conductive paper 4 as shown in FIG. 8B in a part of the preparation sheet 10, so that the above-described charge is released into the air. Therefore, a part of the insulating edge 11 may be selected and cut according to the use environment.
　図９は図１とは別の実施形態である。先の実施形態では、光透過体１０１の外面１０１ａに着脱自在に貼り付けられが、図９の実施形態では、光透過体１０１の内面１０１ｂに着脱自在に貼り付けられる。この場合、光透過体１０１は無色若しくは有色の透明または乳白色等であることが望ましい。また、光透過装飾シート１（１Ｂ）は、第二のシリコーンゴム層３は粘着性の第一のシリコーンゴム層２よりも粘着性の高いシリコーンを用いている。また、第一のシリコーンゴム層２は、第二のシリコーンゴム層３よりも硬度の高いシリコーンを用いている。これにより、埃の粘着を防いでいる。光透過体１０１の形状は、平面、平面の集合体、円筒以外の曲面であってもよく、貼り付け面は外面、内面を問わない。 FIG. 9 is an embodiment different from FIG. In the previous embodiment, it is detachably attached to the outer surface 101a of the light transmissive body 101. In the embodiment of FIG. 9, it is detachably attached to the inner surface 101b of the light transmissive body 101. In this case, the light transmitting body 101 is desirably colorless or colored transparent or milky white. In the light-transmitting decorative sheet 1 (1B), the second silicone rubber layer 3 uses a silicone having a higher adhesiveness than the adhesive first silicone rubber layer 2. The first silicone rubber layer 2 is made of silicone having a higher hardness than the second silicone rubber layer 3. Thereby, adhesion of dust is prevented. The shape of the light transmitting body 101 may be a flat surface, an assembly of flat surfaces, or a curved surface other than a cylinder, and the pasting surface may be an outer surface or an inner surface.
　光透過装飾シート１の端面部分の平面視での切断形状は、上記各実施形態では、直線状であったが、のこぎり状、曲線状等、図１０（ａ）～（ｃ）に示すように様々な形状を取り得る。例えば、同図（ａ）（ｂ）の符号８ａ，８ｂに示すのこぎり状の切断形状のほか、同図（ｃ）の符号８ｃに示す先端を丸めたのこぎり状（曲線状）とすることで、単位長さあたりの端面８の面積を増大させることができ、電荷の放散効率が向上する。 The cut shape in plan view of the end surface portion of the light-transmitting decorative sheet 1 is linear in each of the above-described embodiments, but has a saw-like shape, a curved shape, etc. as shown in FIGS. 10 (a) to 10 (c). Can take various shapes. For example, in addition to the saw-shaped cutting shape indicated by reference numerals 8a and 8b in FIGS. 8A and 8B, the tip shown by reference numeral 8c in FIG. The area of the end face 8 per unit length can be increased, and the charge dissipation efficiency is improved.
　上記実施形態では、インキ層３０は和紙５の表面で層をなしたが、インキを和紙５に含浸させて、インキ層３０と和紙５とを一体化させて着色部３１を構成してもかまわない。 In the above embodiment, the ink layer 30 is layered on the surface of the Japanese paper 5, but the colored paper 31 may be formed by impregnating the Japanese paper 5 with the ink and integrating the ink layer 30 and the Japanese paper 5. Absent.
　上記各実施形態及び使用例は、本発明の趣旨を逸脱しない限り改変及び相互を組み合わせて実施することが可能である。光透過装飾シート１は貼り付ける面を内外面や場所で異ならせたり、寸法、絶縁縁部１１を全辺で切断除去するか一部にするか等も適宜変更が可能である。また、光透過装飾シート１は、丸形、星形等、任意の形状に打ち抜いて使用してもよい。 The above embodiments and examples of use can be implemented in combination with modifications and each other without departing from the spirit of the present invention. The light-transmitting decorative sheet 1 can be changed as appropriate depending on whether the surface to be attached is different depending on the inner or outer surface or the location, the size, the insulating edge 11 is cut or removed on all sides, or part thereof. Further, the light transmission decorative sheet 1 may be used by being punched into an arbitrary shape such as a round shape or a star shape.
　本発明にかかる光透過装飾シートは、照明器具に貼付したり、室内装飾やディスプレイに用いることで、例えば印刷により着色部を設けた紙に光を透過させて、優れた意匠感を呈することができる。 The light-transmitting decorative sheet according to the present invention can be attached to a lighting fixture or used for interior decoration or a display, for example, to transmit light to a paper provided with a colored portion by printing, thereby exhibiting an excellent design feeling. it can.
１：光透過装飾シート、１Ａ：外貼光透過装飾シート、１Ｂ：内貼光透過装飾シート、２：第一のシリコーンゴム層、３：第二のシリコーンゴム層、２’，３’：液状シリコーンゴム、４：導電紙、５：和紙、５ａ：繊維、５ｂ：隙間、６：含浸部、８：端面、８ａ～ｃ：端面部分の平面視での切断形状、９：カーボンの微粒子、１０，１０’：作成用シート、１１：絶縁縁部、２０：プレス機、２１：第一プレス板、２２：第二プレス板、２３：プレスヘッド、３０：インキ層、３１：着色部（絵柄）、１００：照明器具本体、１０１：光透過体、１０１ａ：外面、１０１ｂ：内面、１０２：光源、１１０：照明器具 1: light-transmitting decorative sheet, 1A: outer-applied light-transmitting decorative sheet, 1B: inner-applied light-transmitting decorative sheet, 2: first silicone rubber layer, 3: second silicone rubber layer, 2 ′, 3 ′: liquid Silicone rubber, 4: conductive paper, 5: Japanese paper, 5a: fiber, 5b: gap, 6: impregnated part, 8: end face, 8a to c: cut shape in plan view of the end face part, 9: fine particles of carbon, 10 , 10 ': preparation sheet, 11: insulating edge, 20: press machine, 21: first press plate, 22: second press plate, 23: press head, 30: ink layer, 31: colored portion (pattern) , 100: luminaire main body, 101: light transmitting body, 101a: outer surface, 101b: inner surface, 102: light source, 110: luminaire

Claims (12)

  1. 導電性を有する物質よりなるインキを用いて基材となる紙の上に連続して導電可能なインキ層よりなる着色部を設けた導電紙と、前記導電紙の両面に位置する可撓性且つ光透過性のシリコーンゴム層とを備え、前記シリコーンゴム層のシリコーンゴムは前記導電紙の繊維の隙間に含浸すると共に両シリコーンゴム層を連通した状態で固化した含浸部を備え、前記導電紙が前記両シリコーンゴム層と共に少なくとも一部端部において切断されて前記インキ層が端面に露出している光透過装飾シート。 Conductive paper provided with a colored portion consisting of a continuous conductive ink layer on paper as a base material using ink made of a conductive material, flexible on both sides of the conductive paper, and A silicone rubber layer that is light transmissive, and the silicone rubber of the silicone rubber layer is impregnated in the gaps of the fibers of the conductive paper and has an impregnated portion that is solidified in a state where the two silicone rubber layers are in communication with each other. A light-transmitting decorative sheet, which is cut at least at a part of the end together with the silicone rubber layers and the ink layer is exposed at the end face.
  2. 前記基材となる紙の光透過側に前記インキによる着色部としての絵柄を設けてあり、同光透過側の前記シリコーンゴム層が透明である請求項１記載の光透過装飾シート。 The light-transmitting decorative sheet according to claim 1, wherein a pattern as a colored portion by the ink is provided on a light transmitting side of the paper as the base material, and the silicone rubber layer on the light transmitting side is transparent.
  3. 前記インキは、金属、金属の化合物またはカーボンの微粒子を含んでいる請求項１または２記載の光透過装飾シート。 The light-transmitting decorative sheet according to claim 1, wherein the ink contains metal, a metal compound, or carbon fine particles.
  4. シート全体の電荷が±３００Ｖ以下である請求項１～３のいずれかに記載の光透過装飾シート。 The light-transmitting decorative sheet according to any one of claims 1 to 3, wherein the entire sheet has a charge of ± 300 V or less.
  5. 前記基材となる紙が和紙である請求項１～４のいずれかに記載の光透過装飾シート。 The light-transmitting decorative sheet according to any one of claims 1 to 4, wherein the paper used as the substrate is Japanese paper.
  6. 光源の前に平面または曲面よりなる光透過体を有し、この光透過体に貼り付けて用いる請求項１～５のいずれかに記載の光透過装飾シート。 The light-transmitting decorative sheet according to any one of claims 1 to 5, wherein the light-transmitting decorative sheet has a light-transmitting body having a flat surface or a curved surface in front of the light source, and is used by being attached to the light-transmitting body.
  7. 光源側の前記シリコーンゴム層は、光透過側の前記シリコーンゴム層よりも硬度が低く、硬化状態で粘着可能である請求項６記載の光透過装飾シート。 The light transmission decorative sheet according to claim 6, wherein the silicone rubber layer on the light source side has a lower hardness than the silicone rubber layer on the light transmission side and can be adhered in a cured state.
  8. 透過側の前記シリコーンゴム層は、光源側の前記シリコーンゴム層よりも硬度が低く、硬化状態で粘着可能である請求項６記載の光透過装飾シート。 The light-transmitting decorative sheet according to claim 6, wherein the silicone rubber layer on the transmission side has a lower hardness than the silicone rubber layer on the light source side and can be adhered in a cured state.
  9. 光源の前に平面または曲面よりなる光透過体を有し、この光透過体の透過側に請求項１～７のいずれかに記載の光透過装飾シートを貼り付けてある照明器具。 A lighting fixture having a light transmissive body made of a flat surface or a curved surface in front of a light source, and the light transmissive decorative sheet according to any one of claims 1 to 7 attached to a transmissive side of the light transmissive body.
  10. 光源の前に平面または曲面よりなる光透過体を有し、この光透過体の光源側に請求項１～６、８のいずれかに記載の光透過装飾シートを貼り付けてある照明器具。 9. A lighting fixture comprising a light transmissive body made of a flat surface or a curved surface in front of a light source, and the light transmissive decorative sheet according to claim 1 attached to the light source side of the light transmissive body.
  11. 可撓性を有する光透過装飾シートの製造方法であって、
    第一、第二プレス板の間に、導電性を有する物質よりなるインキを用いて基材となる紙の上に連続して導電可能なインキ層よりなる着色部を設けた導電紙と、前記導電紙の両面に液状のシリコーンゴムとを配置し、前記第一、第二プレス板間を加圧して上下の液状シリコーンゴムを前記導電紙の繊維の隙間に含浸させ、液状シリコーンゴム全体を硬化させて一対の可撓性のシリコーンゴム層及び前記繊維間を連通する含浸部を固化させて形成し、前記導電紙を前記一対のシリコーンゴム層と共に少なくとも一部端部において切断し、前記導電紙の前記インキ層を端面に露出させる光透過装飾シートの製造方法。     A method of manufacturing a light-transmitting decorative sheet having flexibility,
    Conductive paper provided with a colored portion consisting of an ink layer that can be continuously conductive on paper as a base material using ink made of a conductive material between the first and second press plates, and the conductive paper A liquid silicone rubber is disposed on both sides of the sheet, and a pressure is applied between the first and second press plates so that the upper and lower liquid silicone rubbers are impregnated in the gaps between the fibers of the conductive paper, and the entire liquid silicone rubber is cured. A pair of flexible silicone rubber layers and an impregnation portion communicating between the fibers are solidified to form, and the conductive paper is cut at least partially along with the pair of silicone rubber layers, and the conductive paper A method for producing a light-transmitting decorative sheet in which an ink layer is exposed on an end surface.
  12. 前記第一プレス板の表面に液状のシリコーンゴムを塗布し、その液状シリコーンゴムの上に前記導電紙を配置し、その導電紙の上に液状シリコーンゴムをさらに塗布し、二番目の液状シリコーンゴムの上に第二プレス板を配置し、前記第一、第二プレス板間を加圧する請求項１１記載の光透過装飾シートの製造方法。 A liquid silicone rubber is applied to the surface of the first press plate, the conductive paper is disposed on the liquid silicone rubber, and the liquid silicone rubber is further applied on the conductive paper. The method for producing a light-transmitting decorative sheet according to claim 11, wherein a second press plate is disposed above the first and second press plates.
PCT/JP2019/018066 2018-05-10 2019-04-26 Light-transmitting decorative sheet, illumination tool in which same is used, and method for manufacturing light-transmitting decorative sheet WO2019216285A1 (en)

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JPH0489251A (en) * 1990-07-31 1992-03-23 Dainippon Ink & Chem Inc Manufacture of anti-static decorative sheet
JPH11188814A (en) * 1997-12-25 1999-07-13 Tokai Rubber Ind Ltd Antistatic heat-dissipating film and series production method thereof
JP2003048280A (en) * 2001-08-08 2003-02-18 Hiraoka & Co Ltd Stainproof printing sheet and manufacturing method therefor
JP2003053905A (en) * 2001-08-10 2003-02-26 Hiraoka & Co Ltd Aesthetic appearance keeping laminated film material
JP2010143202A (en) * 2008-12-22 2010-07-01 Toyobo Co Ltd Laminated polyester film for facing material, and composite molding improved in touch using the same
JP2015141359A (en) * 2014-01-30 2015-08-03 平岡織染株式会社 Flexible film material for light source cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489251A (en) * 1990-07-31 1992-03-23 Dainippon Ink & Chem Inc Manufacture of anti-static decorative sheet
JPH11188814A (en) * 1997-12-25 1999-07-13 Tokai Rubber Ind Ltd Antistatic heat-dissipating film and series production method thereof
JP2003048280A (en) * 2001-08-08 2003-02-18 Hiraoka & Co Ltd Stainproof printing sheet and manufacturing method therefor
JP2003053905A (en) * 2001-08-10 2003-02-26 Hiraoka & Co Ltd Aesthetic appearance keeping laminated film material
JP2010143202A (en) * 2008-12-22 2010-07-01 Toyobo Co Ltd Laminated polyester film for facing material, and composite molding improved in touch using the same
JP2015141359A (en) * 2014-01-30 2015-08-03 平岡織染株式会社 Flexible film material for light source cover

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