JP2011015276A - Sheet structure for communication - Google Patents
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- JP2011015276A JP2011015276A JP2009158822A JP2009158822A JP2011015276A JP 2011015276 A JP2011015276 A JP 2011015276A JP 2009158822 A JP2009158822 A JP 2009158822A JP 2009158822 A JP2009158822 A JP 2009158822A JP 2011015276 A JP2011015276 A JP 2011015276A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Near-Field Transmission Systems (AREA)
Abstract
Description
本発明は、電磁波を伝播することによって通信を行う通信シートに関するものである。さらに詳しくは、二次元的な広がりを持つ通信用シート構造体であって、情報通信機器がその表面に接触もしくは近接することで、当該通信機器との間で通信を行ったり、複数の情報通信機器がその表面に接触もしくは近接している場合に、これらの間の通信を中継するのに最適な通信用シート構造体に関するものである。 The present invention relates to a communication sheet that performs communication by propagating electromagnetic waves. More specifically, it is a communication sheet structure having a two-dimensional expanse, and when an information communication device is in contact with or close to the surface, communication with the communication device or a plurality of information communication is performed. The present invention relates to a communication sheet structure that is optimal for relaying communication between devices when they are in contact with or close to the surface.
近年、インターネットに代表されるコンピューター通信網や情報ネットワークの利用が一般家庭・企業などを問わずに普及、一般化し増加してきている。最も一般的な利用形態は、パソコンなどにＬＡＮケーブルを直接接続したり、無線を用いて接続したりしてＬＡＮ（Ｌｏｃａｌ Ａｒｅａ Ｎｅｔｗｏｒｋ）を形成し、ＬＡＮ内のコンピューターからインターネットなどのネットワークへのアクセスを可能としている。そのような中にあって、ＬＡＮケーブルを用いる場合は、このケーブルが家屋やオフィス内に引き回され、歩行の妨げになったり、美観上の問題となる。また、無線ＬＡＮを用いる場合、電波の放射を用いて通信を行うため、情報漏洩や不正アクセスなどのセキュリティ上の問題がある。
そこで、通信手段を二次元にし、二次元状の通信媒体を用いることで、これら問題を解決できることが、特許文献１（特開２００４−７４４８号公報）、特許文献２（特開２００６−１９９７９号公報）に示されている。
In recent years, the use of computer communication networks and information networks represented by the Internet has become widespread and generalized regardless of general households and companies. The most common form of use is to connect a LAN cable directly to a personal computer, etc. or connect wirelessly to form a LAN (Local Area Network), and access to a network such as the Internet from a computer in the LAN Is possible. Under such circumstances, when a LAN cable is used, the cable is routed in a house or office, which may hinder walking or cause an aesthetic problem. In addition, when a wireless LAN is used, communication is performed using radio wave radiation, which causes security problems such as information leakage and unauthorized access.
Therefore, it is possible to solve these problems by using two-dimensional communication means and using a two-dimensional communication medium. Patent Document 1 (Japanese Patent Laid-Open No. 2004-7448) and Patent Document 2 (Japanese Patent Laid-Open No. 2006-19979). Gazette).
また、近年、情報ネットワーク社会の発展に伴い、会社内、店舗内、工場内、倉庫内、自宅内、医療現場等に通信ネットワーク網が拡がりつつある。例えば、店舗内において、ＲＦＩＤタグと本通信用シート構造体とを組合せ、商品管理や物流管理を行ったり、工場内において、本通信用シート構造体をセンサーシートとして利用し品質管理を行ったり、自宅内の壁面や床面に本通信用シート構造体を設置し、簡単にホームネットワークの設定を行ったりすることなどが考えられる。そのような中で、上記場所の壁面及び床面、各作業台や棚の上などに通信用シート構造体を設置することは情報ネットワークの構築に大きく役立つものである。上記用途において、通信用シート構造体は、施工者及び使用者の利便性を考慮し、持ち運びや設置に便利であることが望ましい。これまでにも、持ち運びや設置に便利な、ロール状に丸められるフレキシブルなシートについて、特許文献３、特許文献４に提案されている。しかし、従来提案されている織物製の通信用シート構造体は、ロール状に丸められるものの、シート剛性が低いために、シワが発生しやすく、通信性能が低下するといった問題があった。特に、自宅内の壁面や床面に設置する場合、表面硬度が高く、シワの発生しにくいシート構造体である必要がある。 In recent years, with the development of an information network society, communication network networks are spreading in offices, stores, factories, warehouses, homes, medical sites, and the like. For example, in a store, the RFID tag and the communication sheet structure are combined to perform product management and logistics management, or in the factory, the communication sheet structure is used as a sensor sheet to perform quality control. It is conceivable to install the communication sheet structure on the wall or floor surface in the home and easily set the home network. Under such circumstances, installing the communication sheet structure on the wall surface and floor surface of the place, each work table or shelf, etc. is greatly useful for the construction of an information network. In the above application, it is desirable that the communication sheet structure is convenient to carry and install in consideration of the convenience of the installer and the user. Until now, Patent Document 3 and Patent Document 4 have proposed a flexible sheet that can be easily carried and installed and rolled into a roll. However, although the conventionally proposed communication sheet structure made of woven fabric is rolled into a roll shape, there is a problem that wrinkles are easily generated due to low sheet rigidity, and communication performance is deteriorated. In particular, when it is installed on a wall surface or a floor surface in a home, it needs to be a sheet structure that has high surface hardness and is unlikely to cause wrinkles.
本発明は、導電性を有する平面、曲面上に設置して、効率よく情報伝送、電力伝送を行うことができ、ロール状に丸めた場合でもシワが発生しにくく、ロール状に巻取り保管、運搬などをした後使用しても、また曲面といった複雑な形状の面に設置して使用しても、安定した通信性能を発揮する通信用シート構造体を提供することにある。 The present invention can be installed on a conductive plane or curved surface to efficiently transmit information and transmit power, and even when rolled into a roll, is less likely to wrinkle and is wound into a roll. It is an object of the present invention to provide a communication sheet structure that exhibits stable communication performance, whether it is used after transportation or the like, or installed on a complicated surface such as a curved surface.
本発明者らは、上記課題を解決するため検討した結果、次の通信用シート構造体により解決することを見出した。
かくして、本発明によれば、導電性を有する平面または曲面上に設置し、電磁波を伝播することによって通信を行う通信用シート構造体であって、該通信用シート構造体が平面状の基材からなり、該基材の一方の面には導電体が存在する部分と存在しない部分を有しており、該基材が、周波数８００ＭＨｚから１０ＧＨｚにおける比誘電率が１．０〜１５．０であり、かつ曲げ反発率が２０〜９０％である弾性シートからなることを特徴とする通信用シート構造体が提供される。
As a result of studies to solve the above problems, the present inventors have found that the following communication sheet structure can solve the problem.
Thus, according to the present invention, there is provided a communication sheet structure that is installed on a conductive flat surface or curved surface and performs communication by propagating electromagnetic waves, and the communication sheet structure is a planar substrate. One surface of the substrate has a portion where a conductor is present and a portion where the conductor is not present, and the substrate has a relative dielectric constant of 1.0 to 15.0 at a frequency of 800 MHz to 10 GHz. There is provided a communication sheet structure comprising an elastic sheet having a bending repulsion rate of 20 to 90%.
本発明の通信用シート構造体を用いることで、効率よく情報伝送、電力伝送を行うこと
ができ、平面上に限らず、曲面上にも容易に設置することが可能で、机上や商品棚の天板上、床面等設置したい場所に設置しても滑りにくく、使用時の安定性がよいため、オフィスやホームでの使用にとどまらず、生産工場のラインレールや乗り物内、医療現場等、様々な場所での使用が可能となり、各場所での配線の簡略化に役立つ。
By using the communication sheet structure of the present invention, information transmission and power transmission can be performed efficiently, and it can be easily installed not only on a flat surface but also on a curved surface. Even if it is installed on the top plate, floor surface, etc., it is not slippery and has good stability during use, so it is not limited to use in offices and homes. It can be used in various places and helps simplify the wiring in each place.
以下、本発明を詳細に説明する。
本発明の通信用シート構造体は、導電性を有する平面または曲面上に設置し、電磁波を伝播することによって通信を行う通信用シート構造体であり、平面状の基材から構成される。
Hereinafter, the present invention will be described in detail.
The communication sheet structure of the present invention is a communication sheet structure that is installed on a conductive flat surface or curved surface and communicates by propagating electromagnetic waves, and is composed of a planar substrate.
本発明の通信用シート構造体においては、基材の一方の面に導電体が存在する部分と存在しない部分を有していること、基材が、周波数８００ＭＨｚから１０ＧＨｚにおける比誘電率が１．０〜１５．０であり、かつ曲げ反発率が２０〜９０％である弾性シートからなることが肝要である。 In the communication sheet structure of the present invention, the base material has a portion where the conductor is present and a portion where the conductor is not present on one surface of the base material, and the base material has a relative dielectric constant of 1. It is important to be made of an elastic sheet having a bending repulsion rate of 20 to 90% and 0 to 15.0.
上記基材は、二次元で通信を行うため、シート媒体内に電磁波を閉じ込める必要がある。したがって、該基材は、周波数８００ＭＨｚから１０ＧＨｚでの比誘電率が１．０から１５である必要があり、好ましくは１．０から５．０、より好ましくは１．０から３．０である平面状の基材であることが望ましい。上記特性をもつ基材を用いることで、通信用シート構造体は、シート内に伝播する電磁波の減衰を少なくすることができ、きわめて優れた二次元通信性能を発揮する。 Since the base material performs communication in two dimensions, it is necessary to confine electromagnetic waves in the sheet medium. Therefore, the base material needs to have a relative dielectric constant of 1.0 to 15 at a frequency of 800 MHz to 10 GHz, preferably 1.0 to 5.0, more preferably 1.0 to 3.0. A planar substrate is desirable. By using the base material having the above characteristics, the communication sheet structure can reduce the attenuation of the electromagnetic wave propagating in the sheet, and exhibits extremely excellent two-dimensional communication performance.
本発明においては、基材は、平面に限らず曲面でも設置できるようにするため、弾性シートの曲げ反発率が２０〜９０％であることが好ましく、３０〜９０％であることがより好ましい。曲げ反発率が２０％未満の弾性シートを用いた場合、ロール状にすると通信用シート構造体の伸縮に追従できず、内径側にシワが発生する。曲げ反発率が９０％を超えると弾性シートを用いた場合、通信用シート構造体とした時の剛性が得られず、耐荷重性が悪くなる。また、ロール状に巻取り保管、運搬などをした後の使用した場合、また、曲面といった複雑な形状の面に設置して使用した場合、安定した通信性能を得ることが難しくなる。 In the present invention, in order to allow the base material to be installed not only on a flat surface but also on a curved surface, the elastic sheet has a bending repulsion rate of preferably 20 to 90%, more preferably 30 to 90%. When an elastic sheet having a bending repulsion rate of less than 20% is used, if it is formed into a roll, it cannot follow the expansion and contraction of the communication sheet structure, and wrinkles are generated on the inner diameter side. When the bending repulsion rate exceeds 90%, when an elastic sheet is used, the rigidity of the communication sheet structure cannot be obtained, and the load resistance deteriorates. Moreover, when it is used after being wound, stored, transported, etc. in a roll shape, or when installed and used on a complicated surface such as a curved surface, it becomes difficult to obtain stable communication performance.
以上の要件を満たす基材としては、エラスティックな性質を持つ基材であることが好ましい。例えば、合成ゴムシート、エラストマー繊維構造体などが挙げられる。合成ゴムシートとしては、クロロプレンゴム（ＣＲ）、ブチルゴム（ＩＩＲ）、ニトリルゴム（ＮＢＲ）、エチレン・プロピレンゴム（ＥＰＭ・ＥＰＤＭ）、天然ゴム（ＮＲ）、ウレタンゴム、フッ素ゴム、シリコーンゴムを例示することができる。特に、通信性能を考慮すると、シリコーンゴム、フッ素ゴム、クロロプレンゴムが望ましい。 As a base material satisfying the above requirements, a base material having an elastic property is preferable. Examples thereof include a synthetic rubber sheet and an elastomer fiber structure. Examples of the synthetic rubber sheet include chloroprene rubber (CR), butyl rubber (IIR), nitrile rubber (NBR), ethylene / propylene rubber (EPM / EPDM), natural rubber (NR), urethane rubber, fluorine rubber, and silicone rubber. be able to. In consideration of communication performance, silicone rubber, fluorine rubber, and chloroprene rubber are particularly desirable.
また、基材の一方の面には、導電体が存在する部分と存在しない部分がある必要があり、特に該導電体が存在する部分が、導電体が存在しない部分を囲繞していることが好ましい。このような形状を有する導電体が基材の一方の面に存在することにより、導電体が存在しない部分から電磁波がシート外部に漏れ、該通信用シート構造体に近接した外部の通信機器が電磁波を受信させることができる。 In addition, it is necessary that one surface of the substrate has a portion where the conductor is present and a portion where the conductor is not present, and in particular, the portion where the conductor is present surrounds the portion where the conductor is not present. preferable. When a conductor having such a shape is present on one surface of the substrate, electromagnetic waves leak from the portion where the conductor is not present to the outside of the sheet, and an external communication device adjacent to the communication sheet structure Can be received.
導電体の電気抵抗値は、５Ω／□以下であることが好ましく、０．０００１Ω／□から１Ω／□であることがより好ましい。導電体の電気抵抗値を、５Ω／□以下とすることにより、シート内を伝播する電磁波の減衰をより小さく抑えることができ、良好な二次元での通信を行うことができる。このため、導電体としては、金、銀、銅、アルミニウム、ニッケル、ステンレスを含んだ素材を使用することが好ましい。 The electric resistance value of the conductor is preferably 5Ω / □ or less, and more preferably 0.0001Ω / □ to 1Ω / □. By setting the electric resistance value of the conductor to 5Ω / □ or less, attenuation of electromagnetic waves propagating in the sheet can be suppressed to a smaller level, and good two-dimensional communication can be performed. For this reason, as a conductor, it is preferable to use the raw material containing gold | metal | money, silver, copper, aluminum, nickel, and stainless steel.
基材の一方の面に上記のような導電体を形成する手法としては、導電体をプリント、めっき、蒸着、ラミネートすれば良い。特に銅、銀、アルミニウム、ニッケルなどの金属を含んだものをめっきもしくはラミネートすれば、導電体の金属膜を厚く作製することができる。 As a method for forming the conductor as described above on one surface of the substrate, the conductor may be printed, plated, vapor-deposited or laminated. In particular, if a metal containing a metal such as copper, silver, aluminum, or nickel is plated or laminated, the conductive metal film can be made thick.
上記のような導電体が存在する部分と存在しない部分がある形態、特に該導電体が存在する部分が、導電体が存在しない部分を囲繞している形態としては、通信性能や加工性を考えた場合、図１から図７に示す形態を好ましく例示することができ、中でも図１に示すような格子状の形態が好ましい。導電体の形状が、図１、および、図３から図７のような線状である場合、線幅が０．５ｍｍから１．５ｍｍであることが好ましい。また、図１に示すような格子状である場合は、格子線間隔が３ｍｍから１０ｍｍであることが特に好ましい。本発明においては、少なくとも一部に、該導電体が存在する部分が、導電体が存在しない部分を囲繞していればよく、例えば図１に示すようにシートの端部等において、該導電体が存在する部分が、導電体が存在しない部分を囲繞していない部分があってもよい。 Considering communication performance and workability as a form where there is a part where the conductor is present and a part where the conductor is not present, particularly a part where the conductor is present surrounds a part where the conductor is not present 1 to 7 can be preferably exemplified, and a lattice-like form as shown in FIG. 1 is particularly preferable. When the shape of the conductor is linear as shown in FIGS. 1 and 3 to 7, the line width is preferably 0.5 mm to 1.5 mm. Moreover, when it is a grid | lattice form as shown in FIG. 1, it is especially preferable that a grid line space | interval is 3 mm-10 mm. In the present invention, it is sufficient that at least a part where the conductor is present surrounds a part where the conductor is not present. For example, as shown in FIG. There may be a portion in which the portion where is present does not surround the portion where the conductor is not present.
また、導電体の厚みは、通信用シート構造体を伝播する電磁波の周波数に対応する導電体表皮深さよりも厚いことが好ましく、これにより電磁波を通信シート構造体内に閉じ込めやすくなる。導電体の厚みは、好ましくは０．０００１μｍから５０μｍであり、より好ましくは１μｍから２５μｍである。 Further, the thickness of the conductor is preferably thicker than the conductor skin depth corresponding to the frequency of the electromagnetic wave propagating through the communication sheet structure, so that the electromagnetic wave is easily confined in the communication sheet structure. The thickness of the conductor is preferably 0.0001 μm to 50 μm, more preferably 1 μm to 25 μm.
本発明においては、通信用シート構造体の耐久性を向上させるため、一方の面において、導電体及び基材が、保護層によって覆われていることが好ましい。
保護層の素材は、樹脂、シート、フィルム、織物、編物、不織布などが挙げられる。使用時の耐荷重性や平滑性を考慮すると、樹脂やフィルムが好ましい。該樹脂やフィルムの構成する樹脂としては、ポリエチレンテレフタレート（ＰＥＴ）、ポリエチレンナフタレート（ＰＥＮ）、ポリブチレンテレフタレート（ＰＢＴ）、ポリトリメチレンテレフタレート（ＰＴＴ）などのポリエステル、ナイロン６、ナイロン６６、ナイロン１２などの脂肪族ポリアミド、ポリパラフェニレンテレフタルアミド、ポリメタフェニレンテレフタルアミドなどの芳香族ポリアミド、ポリプロピレン（ＰＰ）、ポリエチレン（ＰＥ）、ポリカーボネート（ＰＣ）、ポリイミド（ＰＩ）を例示することができる。この保護層の厚みは、０．０５ｍｍ〜１０ｍｍ、好ましくは０．１〜０．３ｍｍ程度である。
In the present invention, in order to improve the durability of the communication sheet structure, it is preferable that the conductor and the substrate are covered with a protective layer on one surface.
Examples of the material for the protective layer include resins, sheets, films, woven fabrics, knitted fabrics, and nonwoven fabrics. In consideration of load resistance and smoothness during use, resins and films are preferable. Examples of the resin and the resin constituting the film include polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), nylon 6, nylon 66, nylon 12 Examples thereof include aliphatic polyamides such as, aromatic polyamides such as polyparaphenylene terephthalamide and polymetaphenylene terephthalamide, polypropylene (PP), polyethylene (PE), polycarbonate (PC), and polyimide (PI). The thickness of this protective layer is about 0.05 mm to 10 mm, preferably about 0.1 to 0.3 mm.
このように、保護層を設ける場合は、前述したように、基材に直接導電体を、形成し、さらに保護層をその上から被覆してもよいが、基材と接合する面に導電体が形成された保護層と、基材とを接合して成形してもよい。 As described above, when the protective layer is provided, as described above, the conductor may be directly formed on the substrate, and the protective layer may be further coated thereon. You may shape | mold by joining the protective layer in which this was formed, and a base material.
また、かかる接合方法は、接着や融着により行い、点状に接合する方法、ストライプ状に接合する方法、又は、面状に接合する方法を例示できる。接着による接合する場合、接着剤としては、アクリル系接着剤、ウレタン系接着剤、エポキシ系接着剤、シリコーン系接着剤、合成ゴム系接着剤、天然ゴム系接着剤などが利用できる。また、ポリエステル系ホットメルト接着剤やポリアミド系ホットメルト接着剤を用いて、熱ラミネートを行う方法も採用することができる。 Moreover, this joining method can be exemplified by a method of joining in a spot shape, a method of joining in a stripe shape, a method of joining in a stripe shape, or a method of joining in a planar shape by adhesion or fusion. When joining by adhesion, acrylic adhesive, urethane adhesive, epoxy adhesive, silicone adhesive, synthetic rubber adhesive, natural rubber adhesive, or the like can be used as the adhesive. Also, a method of performing thermal lamination using a polyester hot melt adhesive or a polyamide hot melt adhesive can be employed.
本発明の通信シートにおいては、導電体が設けられた基材の一方の面とは反対の面に、導電体を９０％以上に亘り設けてもよい。すなわち、該通信用シート構造体が平面状の基材からなり、該基材の一方の面には導電体が存在する部分と存在しない部分を有しており、他方の面には、導電体が９０％以上に亘り存在している通信用シート構造体ととしてもよい。上記のように、基材の他方の面に導電体が存在する通信用シート構造体とした場合は、これを、導電性を有する平面または曲面上に設置して使用する必要はない。上記通信用シート構造体においては、基材の他方の面に、９５％以上に亘り導電体が存在していることが好ましく、該面が導電体で全面、すなわち１００％覆れていてもよい。 In the communication sheet of this invention, you may provide a conductor over 90% or more in the surface on the opposite side to the one surface of the base material provided with the conductor. That is, the communication sheet structure is made of a planar base material, and one surface of the base material has a portion where a conductor exists and a portion where the conductor does not exist, and the other surface has a conductor. It is good also as a sheet structure for communication in which 90% or more exists. As mentioned above, when it is set as the communication sheet | seat structure body in which a conductor exists in the other surface of a base material, it is not necessary to install and use this on the plane or curved surface which has electroconductivity. In the communication sheet structure, it is preferable that the conductor is present on the other surface of the substrate over 95% or more, and the surface may be entirely covered with the conductor, that is, 100%. .
上記の基材の他方の面に存在する導電体の電気抵抗値としては、好ましくは５Ω／□以下、より好ましくは０．００１Ω／□から３Ω／□であればよい。ここで、電気抵抗値を１Ω／□以下とし、通信用シート構造体製造時の加工性を考えた場合、上記導電体として、金、銀、銅、アルミニウム、ステンレス、ニッケルを含んだ素材を使用することが好ましい。 The electric resistance value of the conductor present on the other surface of the substrate is preferably 5Ω / □ or less, more preferably 0.001Ω / □ to 3Ω / □. Here, when the electrical resistance value is 1Ω / □ or less and the workability at the time of manufacturing the communication sheet structure is considered, a material containing gold, silver, copper, aluminum, stainless steel, nickel is used as the conductor. It is preferable to do.
樹脂層に上記のような導電性能を付与する手法としては、導電性を有する素材をプリント、めっき、蒸着、ラミネートすれば良い。特に銅、銀、アルミニウム、ニッケルなどの金属を含んだものをめっきもしくはラミネートすれば、金属膜を厚く作製することができるため良い。
なお、基材の他方の面に設けた導電体の厚みは、通常、好ましくは０．００００１μｍから５０μｍ、より好ましくは１μｍから２５μｍである。
As a method for imparting the above-mentioned conductive performance to the resin layer, a conductive material may be printed, plated, vapor-deposited or laminated. In particular, plating or laminating a material containing a metal such as copper, silver, aluminum, or nickel is preferable because a thick metal film can be formed.
The thickness of the conductor provided on the other surface of the substrate is usually preferably from 0.00001 μm to 50 μm, more preferably from 1 μm to 25 μm.
本発明において、基材の他方の面に導電体を設けない通信用シート構造体の場合は、該通信用シート構造体を、金属体等の導電性を有する物体の表面に設置して用いてもよいし、導電性を有するシートを別に用意し、その上に積層して用いてもよい。この場合は、通信シート構造体をより薄くすることが可能となり、ロール状に巻取り保管、運搬などをするのが容易となる。一方、基材の他方の面に導電体を設けた通信用シート構造体の場合は、該通信用シート構造体を、金属体等の上に設置するこなく使用することが可能となる。 In the present invention, in the case of a communication sheet structure in which a conductor is not provided on the other surface of the substrate, the communication sheet structure is used by being installed on the surface of a conductive object such as a metal body. Alternatively, a conductive sheet may be prepared separately and stacked on the sheet. In this case, it is possible to make the communication sheet structure thinner, and it is easy to wind up and store and transport the communication sheet structure. On the other hand, in the case of a communication sheet structure in which a conductor is provided on the other surface of the substrate, the communication sheet structure can be used without being placed on a metal body or the like.
以下、実施例より本発明をさらに詳細に説明する。なお、実施例、比較例中の物性は下記の方法で測定した。 Hereinafter, the present invention will be described in more detail with reference to examples. In addition, the physical property in an Example and a comparative example was measured with the following method.
（１）比誘電率：
空洞共振器摂動法により、比誘電率を求めた。具体的には測定試料を１．５ｍｍ×１．５ｍｍ×８０ｍｍサイズにサンプルを準備した。次に、関東電子応用開発社製空洞共振器摂動法複素誘電率評価装置に挿入後、アジレント社製ネットワークアナライザーを用いて、測定試料の共振特性を測定した。挿入前後の共振特性を比較し、比誘電率を求めた。
(1) Relative permittivity:
The relative dielectric constant was obtained by the cavity resonator perturbation method. Specifically, a sample was prepared in a size of 1.5 mm × 1.5 mm × 80 mm as a measurement sample. Next, after inserting into a cavity resonator perturbation method complex dielectric constant evaluation apparatus manufactured by Kanto Electronics Application Development Co., Ltd., the resonance characteristics of the measurement sample were measured using a network analyzer manufactured by Agilent. The relative dielectric constant was calculated by comparing the resonance characteristics before and after insertion.
（２）曲げ反発率：
ＪＩＳＬ１０９６ ８．２０．３ ループ圧縮法に基づき、曲げ反発率を求めた。具体的には、５ｃｍ×２ｃｍの試験片を５枚採取し、ループ反発率を５回測定し、その平均値を曲げ反発率とした。
(2) Bending rebound rate:
Based on JISL1096 8.20.3 loop compression method, the bending repulsion rate was calculated | required. Specifically, 5 test pieces of 5 cm × 2 cm were collected, the loop rebound rate was measured 5 times, and the average value was taken as the bending rebound rate.
（３）空隙率：
空隙率は、樹脂体積に対する気泡体積の割合で、樹脂厚みと面積から体積を求め、重量を測定し、次式を用いて算出した。
空隙率（％）＝［１−（Ｍ／Ｄ）／Ｖ］×１００
Ｍ・・・樹脂重量（ｇ）
Ｄ・・・樹脂密度（ｇ/ｃｍ３）
Ｖ・・・樹脂体積（ｃｍ３）
(3) Porosity:
The porosity was a ratio of the bubble volume to the resin volume, the volume was determined from the resin thickness and area, the weight was measured, and the porosity was calculated using the following formula.
Porosity (%) = [1- (M / D) / V] × 100
M: Resin weight (g)
D: Resin density (g / cm 3 )
V: Resin volume (cm 3 )
（４）通信性能評価判定：
図３に示したように、通信用シート構造体上に置かれた２つの近接コネクターを距離ｒだけ離して配置し、アジレント社製、ネットワークアナライザーを用いて、２．４５ＧＨｚにおける透過係数Ｘを計測する。ここで、近接コネクターの距離は、１ｃｍ間隔とし１０ｃｍから８０ｃｍまで計測を行った。また、使用した近接コネクターは、通信用シート構造体で２．４５ＧＨｚにピークを持つものを使用した。計測した透過係数Ｘの平均値（Ｘａｖ.）を計測した。透過係数Ｘの平均値（Ｘａｖ.）が−３０以上のものを良好、−３０以下のものを不良とした。ロール状に巻く前と巻いた後の通信シート構造体について、測定を行った。
(4) Communication performance evaluation judgment:
As shown in FIG. 3, two proximity connectors placed on the communication sheet structure are arranged apart by a distance r, and a transmission coefficient X at 2.45 GHz is measured using a network analyzer manufactured by Agilent. To do. Here, the distance between the proximity connectors was 1 cm, and measurement was performed from 10 cm to 80 cm. The proximity connector used was a communication sheet structure having a peak at 2.45 GHz. The average value (Xav.) Of the measured transmission coefficient X was measured. The average value (Xav.) Of the transmission coefficient X was −30 or more was good, and the average value −30 or less was bad. Measurement was performed on the communication sheet structure before and after being rolled.
（５）シート構造体曲げ評価判定：
シート構造体を直径１５ｃｍに丸め、内径側に発生したシワの数を観察する。シワが発生していないものを良好、シワが１つ以上発生しているものを不良とした。
(5) Evaluation of sheet structure bending evaluation:
The sheet structure is rolled to a diameter of 15 cm, and the number of wrinkles generated on the inner diameter side is observed. A case where no wrinkle was generated was judged as good, and a case where one or more wrinkles was formed was judged as bad.
［実施例１］
保護層及び導電体として、２５０μｍのＰＥＴフィルムに９μｍのアルミニウム箔をラミネートした後、格子状にエッチング処理したアルミ箔ラミネートフィルムを得た。導電体の格子形状は、縦横方向いずれも、線幅が１ｍｍ、線間隔が７ｍｍとした。基材には、厚さ１．５ｍｍの表１に示すフッ素ゴム（下関パッキング社フッ素ゴム板）を用いた。基材の片面にはアクリル系粘着剤を付着量が各面１０ｇ／ｍ２となるようにテーブルコーターにて塗付した。その後、保護層と導電体を併せた層と基材をカレンダー加工機にて接着させ、通信用シート構造体を作製した。接着させる際は、アルミ面を接着させるようにした。別シートとして、格子状にエッチング処理をしなかった以外は上記と同様にして２５０μｍのＰＥＴフィルムに９μｍのアルミニウム箔をラミネートしたアルミ箔ラミネートＰＥＴフィルムを作成し、この上に得られた通信用シート構造体を積層した。結果を表１に示す。
[Example 1]
After a 9 μm aluminum foil was laminated on a 250 μm PET film as a protective layer and a conductor, an aluminum foil laminated film etched in a lattice shape was obtained. The grid shape of the conductor was 1 mm in line width and 7 mm in line spacing in both the vertical and horizontal directions. As the base material, the fluororubber (Shimonoseki Packing fluororubber plate) shown in Table 1 having a thickness of 1.5 mm was used. An acrylic pressure-sensitive adhesive was applied to one side of the substrate with a table coater so that the adhesion amount was 10 g / m 2 on each side. Then, the layer which combined the protective layer and the conductor, and the base material were adhere | attached with the calendar processing machine, and the sheet structure for communication was produced. When bonding, the aluminum surface was bonded. As another sheet, an aluminum foil laminated PET film obtained by laminating a 9 μm aluminum foil on a 250 μm PET film was prepared in the same manner as above except that the etching process was not performed in a lattice shape, and a communication sheet obtained thereon The structure was laminated. The results are shown in Table 1.
［実施例２］
基材をフッ素ゴムの代えて、表１に示すＣＲゴム（下関パッキング社ＣＲスポンジ）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Example 2]
A communication sheet structure was prepared in the same manner as in Example except that CR rubber shown in Table 1 (CR sponge from Shimonoseki Packing Co., Ltd.) was used instead of fluoro rubber. The results are shown in Table 1.
［実施例３］
基材をフッ素ゴムに代えて、表１に示すシリコーンゴム（下関パッキング社シリコーンスポンジ）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Example 3]
A communication sheet structure was prepared in the same manner as in the example except that the base material was replaced with fluororubber and the silicone rubber shown in Table 1 (silicone sponge from Shimonoseki Packing) was used. The results are shown in Table 1.
［比較例１］
基材をフッ素ゴムに代えて、表１に示すＰＴＦＥ板（下関パッキング社ＰＴＦＥ板）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Comparative Example 1]
A communication sheet structure was produced in the same manner as in the example except that the PTFE plate (Shimonoseki Packing PTFE plate) shown in Table 1 was used instead of the fluororubber. The results are shown in Table 1.
［比較例２］
基材をフッ素ゴムに代えて、表１に示すフッ素ゴム板（下関パッキング社フッ素スポンジ標準ＦＲ−３５０）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Comparative Example 2]
A communication sheet structure was prepared in the same manner as in the example except that the fluororubber plate (Shimonoseki Packing Corp. fluorine sponge standard FR-350) shown in Table 1 was used instead of the fluororubber. The results are shown in Table 1.
［比較例３］
基材をフッ素ゴムに代えて、表１に示すＣＲ板（下関パッキング社ＣＲ板）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Comparative Example 3]
A communication sheet structure was prepared in the same manner as in Example except that the base plate was replaced with fluororubber and a CR plate (Shimonoseki Packing CR plate) shown in Table 1 was used. The results are shown in Table 1.
［比較例４］
基材をフッ素ゴムに代えて、表１に示す発泡ＰＰ板（古河電工株式会社製エフセルＣＰ３０２０）を用いた以外は、実施例と同様に通信用シート構造体を作製した。結果を表１に示す。
[Comparative Example 4]
A communication sheet structure was produced in the same manner as in the example except that the foamed PP plate (Fcel CP3020 manufactured by Furukawa Electric Co., Ltd.) shown in Table 1 was used instead of the fluororubber. The results are shown in Table 1.
本発明の通信用シート構造体は、周波数が８００ＭＨｚから１０ＧＨｚの周波数帯で、二次元での通信が可能であり、オフィス内の会議室や自室における事務机の天板上に設置して使用することがもちろんのこと、商品棚の上に設置し商品管理、物流管理に利用したり、壁面もしくは床面に設置しセンサーシートとして利用したりすることができる。 The communication sheet structure according to the present invention is capable of two-dimensional communication in a frequency band of 800 MHz to 10 GHz, and is used by being installed on a top board of an office desk in a conference room in the office or in its own room. Of course, it can be installed on a product shelf and used for product management and physical distribution management, or installed on a wall surface or floor surface and used as a sensor sheet.
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| JP2014156064A (en) * | 2013-02-15 | 2014-08-28 | Hagihara Industries Inc | Sheet body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160615A (en) * | 2006-12-26 | 2008-07-10 | Teijin Fibers Ltd | Flexible sheet structure for communication |
| JP2008295176A (en) * | 2007-05-23 | 2008-12-04 | Serukurosu:Kk | Power feeding system and power feeding device |
| JP2009134709A (en) * | 2007-10-31 | 2009-06-18 | Nitta Ind Corp | Sheet body for improving wireless communication, ic tag for wireless communication, information transmitting medium and wireless communication system |
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2009
- 2009-07-03 JP JP2009158822A patent/JP5368193B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008160615A (en) * | 2006-12-26 | 2008-07-10 | Teijin Fibers Ltd | Flexible sheet structure for communication |
| JP2008295176A (en) * | 2007-05-23 | 2008-12-04 | Serukurosu:Kk | Power feeding system and power feeding device |
| JP2009134709A (en) * | 2007-10-31 | 2009-06-18 | Nitta Ind Corp | Sheet body for improving wireless communication, ic tag for wireless communication, information transmitting medium and wireless communication system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014156064A (en) * | 2013-02-15 | 2014-08-28 | Hagihara Industries Inc | Sheet body |
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| JP5368193B2 (en) | 2013-12-18 |
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