JP4908187B2 - Communication sheet structure - Google Patents
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- JP4908187B2 JP4908187B2 JP2006348852A JP2006348852A JP4908187B2 JP 4908187 B2 JP4908187 B2 JP 4908187B2 JP 2006348852 A JP2006348852 A JP 2006348852A JP 2006348852 A JP2006348852 A JP 2006348852A JP 4908187 B2 JP4908187 B2 JP 4908187B2
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Description
本発明は、2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 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 thereof, it communicates with the communication device or a plurality of information communication devices. 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。
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 usage is to connect a LAN cable directly to a personal computer, etc.
An area network), enabling access to a network such as the Internet from a computer in the LAN. 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.
そこで、通信手段を2次元にし、2次元上の通信媒体を用いることで、これら問題が解決できることが、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。
ここで、通信を行う場合、その通信に使用する周波数を設定し通信を行わなければならないが、いずれの従来技術でも通信する際の周波数が規定されていない。2次元にて通信を行うには、2次元通信用シート媒体内に電磁エネルギーを閉じ込め、そのエネルギーを利用しなければならない。
このような中で、本発明者は、800MHz〜5GHzの周波数において上記通信用シート媒体内にエネルギーを閉じ込め2次元にて通信が可能であることを見出した。
Here, when performing communication, it is necessary to set the frequency used for the communication and perform the communication. However, any conventional technology does not define the frequency for communication. In order to perform communication in two dimensions, it is necessary to confine electromagnetic energy in a two-dimensional communication sheet medium and use the energy.
Under such circumstances, the present inventors have found that energy can be confined in the communication sheet medium at a frequency of 800 MHz to 5 GHz and communication can be performed in two dimensions.
本発明は、周波数が800MHzから5GHzであり、この周波数帯で、2次元での通信が可能となる具体的な通信用フレキシブルシート構造体を提供することにある。 The present invention provides a specific flexible sheet structure for communication that has a frequency of 800 MHz to 5 GHz and enables two-dimensional communication in this frequency band.
本発明は、少なくとも下記の上層、中層および下層の3つの層から構成されるシート構造体からなる通信用シート構造体に関する。
上層:導電性能を有する層であり、該層には導電部と非導電部が存在し、該導電部の割合が8%から45%であり、導電部が完全に途切れることなく連続し、その導電部の電気抵抗値が1m2あたり5Ω以下である層。
中層:周波数800MHzから5GHzでの誘電正接が0.01以下である層。
下層:全面に導電性を有し、1m2あたりの電気抵抗値が1Ω以下である層。
The present invention relates to a communication sheet structure composed of a sheet structure composed of at least the following three layers: upper layer, middle layer and lower layer.
Upper layer: a layer having conductive performance, in which the conductive portion and the non-conductive portion are present, the proportion of the conductive portion is 8% to 45%, and the conductive portion is continuous without any interruption, A layer in which the electric resistance value of the conductive portion is 5Ω or less per 1 m 2 .
Middle layer: a layer having a dielectric loss tangent of 0.01 or less at a frequency of 800 MHz to 5 GHz.
Lower layer: a layer having conductivity on the entire surface and having an electric resistance value of 1Ω or less per 1 m 2 .
本発明の通信用シート構造体を用いることで、ケーブルや無線を使わずに通信することができる。 By using the communication sheet structure of the present invention, communication can be performed without using a cable or radio.
以下、本発明を詳細に説明する。
本発明のシート構造体は、少なくとも上層・中層・下層の3つの層からなる。2次元で通信を行うには、このシート構成にて、シート媒体内に電磁エネルギーを閉じ込め、そのエネルギーを利用しなければならない。シート構成が異なると、シート媒体内に電磁エネルギーを閉じ込めることができず、通信することができなくなってしまう。また、各層についてもそれぞれ適切な要求性能がある。
Hereinafter, the present invention will be described in detail.
The sheet structure of the present invention comprises at least three layers of an upper layer, a middle layer and a lower layer. In order to perform two-dimensional communication, electromagnetic energy must be confined in the sheet medium and utilized using this sheet configuration. If the sheet configuration is different, electromagnetic energy cannot be confined in the sheet medium, and communication cannot be performed. Each layer also has appropriate required performance.
上層:
上層の導電性については、層内に導電部と非導電部が存在し、導電部の面積が8%から45%で導電部が完全に途切れることなく連続していなければならない。層内の導電部の割合が8%未満では電磁エネルギーが消失してしまい良好な通信状態を保つことができ無くなる。一方、導電部の割合が45%を超えると、シート内での電磁エネルギーが相互干渉してしまうため、良好な通信状態を保つことができ無くなる。上記導電部の電気抵抗値も通信性能を大きく左右するものであり、電気抵抗値が低いほうが通信状態を良好に保つことができる。導電部の電気抵抗値が1m2あたり5Ω以下となれば、良好な通信状態を保つことができる。しかしながら、上層導電部の電気抵抗値が1m2あたり5Ωを超える場合、シート内に電磁エネルギーを伝播、内在させることができ無いため、2次元での通信ができなくなってしまう。ここで、導電部の電気抵抗値を1m2あたり5Ω以下にするには、銅、銀、アルミニウム、ステンレスを含んだ素材を使用することが良い。
なお、上記導電部の電気抵抗値は、1m2あたり好ましくは0.001Ωから3Ωである。
Upper layer:
Regarding the conductivity of the upper layer, the conductive portion and the non-conductive portion are present in the layer, and the conductive portion area should be continuous from 8% to 45% without being completely interrupted. If the proportion of the conductive portion in the layer is less than 8%, the electromagnetic energy is lost and a good communication state cannot be maintained. On the other hand, when the proportion of the conductive portion exceeds 45%, electromagnetic energy in the sheet interferes with each other, so that a good communication state cannot be maintained. The electrical resistance value of the conductive part also greatly affects the communication performance, and the lower the electrical resistance value, the better the communication state can be maintained. If the electric resistance value of the conductive portion is 5Ω or less per 1 m 2 , a good communication state can be maintained. However, when the electrical resistance value of the upper conductive portion exceeds 5Ω per 1 m 2 , electromagnetic energy cannot be propagated and contained in the sheet, and two-dimensional communication becomes impossible. Here, in order to set the electric resistance value of the conductive portion to 5Ω or less per 1 m 2, it is preferable to use a material containing copper, silver, aluminum, and stainless steel.
The electrical resistance value of the conductive part is preferably 0.001Ω to 3Ω per 1 m 2 .
上層に導電性能を付与するには、導電性を有する素材を使用すれば良く、銅、銀、アルミニウム、ニッケルなどの金属を含んだもの、カーボンブラックを含んだものなどが特に良い。上層の導電形状も特に限定されないが、シート製造時の加工性を考えた場合、図1に示す格子状や図2に示す蜂の巣状であることが好ましい。その中でも、格子状であり、格子線幅が0.5mmから1.5mm、格子線間隔が5mmから10mmであることが特に好ましい。 In order to impart conductive performance to the upper layer, a conductive material may be used, and those containing metals such as copper, silver, aluminum, nickel, and those containing carbon black are particularly good. The conductive shape of the upper layer is not particularly limited, but when considering the workability at the time of sheet production, it is preferably a lattice shape shown in FIG. 1 or a honeycomb shape shown in FIG. Among them, it is particularly preferable that the lattice shape is 0.5 to 1.5 mm and the interval between the lattice lines is 5 to 10 mm.
なお、上層の厚みは、通常、0.02mmから1.2mm、好ましくは0.05mmから0.6mmである。
また、上層の目付けは、通常、50g/m2から300g/m2、好ましくは100g/m2から250g/m2である。
The thickness of the upper layer is usually 0.02 mm to 1.2 mm, preferably 0.05 mm to 0.6 mm.
The basis weight of the upper layer is usually 50 g / m 2 to 300 g / m 2 , preferably 100 g / m 2 to 250 g / m 2 .
中層:
本発明の中層は、800MHzから5GHzでの誘電正接が0.01以下となる形状、素材であれば良い。形状として、特に好ましくは、樹脂板、適度に空気層を含んだ不織布などの繊維構造体や発泡させた樹脂シートなどである。素材としては、ポリエチレン(PE)、ポリカーボネート(PC)や、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であれば、良好な通信状態を保つことができる。しかしながら、800MHzから5GHzでの誘電正接が0.01を超えると、シート内に電磁エネルギーを内在させることができずエネルギーロスが発生する。そのため、通信性能が大きく低下してしまう。
ここで、上記誘電正接を0.01以下にするには、ポリオレフィン素材を使用するか、空気層を含んだ形状であることが好ましい。
上記誘電正接は、好ましくは0.001から0.01である。
なお、中層の厚みは、通常、0.2mmから50mm、好ましくは0.5mmから30mmである。
また、中層の目付けは、通常、50g/m2から500g/m2、好ましくは80g/m2から300g/m2である。
Middle layer:
The middle layer of the present invention may be any shape or material that has a dielectric loss tangent of 0.01 or less from 800 MHz to 5 GHz. The shape is particularly preferably a resin plate, a fiber structure such as a nonwoven fabric appropriately including an air layer, or a foamed resin sheet. Good material is polyethylene (PE), polycarbonate (PC), polyester such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) Communication state can be maintained. However, if the dielectric loss tangent from 800 MHz to 5 GHz exceeds 0.01, electromagnetic energy cannot be contained in the sheet, resulting in energy loss. For this reason, the communication performance is greatly reduced.
Here, to make the dielectric loss tangent 0.01 or less, it is preferable to use a polyolefin material or a shape including an air layer.
The dielectric loss tangent is preferably 0.001 to 0.01.
The thickness of the middle layer is usually 0.2 mm to 50 mm, preferably 0.5 mm to 30 mm.
The basis weight of the middle layer is usually 50 g / m 2 to 500 g / m 2 , preferably 80 g / m 2 to 300 g / m 2 .
下層:
下層は、全面に電磁波シールド性能を有していれば良好な通信状態を保つことができる。電気抵抗値としては、1m2あたり1Ω以下であればよい。しかしながら、下層が全面に導電性を有していない場合、例えば、一部分に絶縁部が存在する場合、または/あるいは、電気抵抗値が1m2あたり1Ωを超えるような場合、その分部から電磁エネルギーが漏洩してしまう。そのため、シート内に電磁エネルギーを内在させることができずエネルギーロスが発生し、通信性能が大きく低下してしまう。
ここで、電気抵抗値を1m2あたり1Ω以下にするには、シート製造時の加工性を考えた場合、繊維布帛に銅、ニッケルなどをメッキした布帛や、フィルム面に銅、銀、アルミニウムなどを蒸着させたフィルム状のもの、銅箔やアルミ箔などの金属箔などが好ましく、これらを使用することで、良好な通信状態を保つことができる。
上記電気抵抗値は、好ましくは0.001Ωから0.8Ωである。
なお、下層の厚みは、通常、0.05mmから0.5mm、好ましくは0.1mmから0.4mmである。
また、下層の目付けは、通常、50g/m2から250g/m2、好ましくは80g/m2から200g/m2である。
Underlayer:
If the lower layer has electromagnetic shielding performance on the entire surface, a good communication state can be maintained. The electrical resistance value may be 1Ω or less per 1 m 2 . However, if the lower layer does not have conductivity on the entire surface, for example, if there is an insulating part in a part, or / or if the electrical resistance value exceeds 1Ω per 1 m 2 , the electromagnetic energy from that part Leaks. For this reason, electromagnetic energy cannot be contained in the sheet, energy loss occurs, and communication performance is greatly reduced.
Here, in order to set the electric resistance value to 1Ω or less per 1 m 2 , when considering the workability at the time of sheet production, the cloth is plated with copper, nickel, etc., the film surface is copper, silver, aluminum, etc. The film-like thing which vapor-deposited, metal foils, such as copper foil and aluminum foil, etc. are preferable, and a favorable communication state can be maintained by using these.
The electric resistance value is preferably 0.001Ω to 0.8Ω.
The thickness of the lower layer is usually 0.05 mm to 0.5 mm, preferably 0.1 mm to 0.4 mm.
The basis weight of the lower layer is usually 50 g / m 2 to 250 g / m 2 , preferably 80 g / m 2 to 200 g / m 2 .
本発明のシート構造体は、少なくとも上層、中層、下層の3つの層からなるが、これらは一体のものであっても良いし、各層を接着させた構造としても良い。各層を接着させる場合、接着に用いる接着剤や接着の方法に関して特に規定されることは無いが、ホットメルト樹脂による熱接着やアクリル樹脂やウレタン樹脂などによる接着、スチレンブタジエンゴム(SBR)やイソプレンゴム(IR)などによる接着などが好ましい。 The sheet structure of the present invention is composed of at least three layers of an upper layer, a middle layer, and a lower layer, but these may be integrated or may be a structure in which the layers are bonded. When adhering each layer, there are no particular restrictions on the adhesive used for adhesion and the method of adhesion, but thermal adhesion with hot melt resin, adhesion with acrylic resin, urethane resin, etc., styrene butadiene rubber (SBR) and isoprene rubber Adhesion by (IR) or the like is preferable.
本発明のシート構造体が一体となった構造の場合、中層の上面に導電性能を有する上層を形成させる。この場合、特にその方法は限定されていないが、プリントやエッチングにより導電性能を有する層を形成させることが好ましい。そして中層の下面には、全面に導電性能を有する下層を形成させる。下層を形成させる方法についても特に限定されていないが、エッチングや蒸着、スパッタリングなどによって導電性能を有する層を形成させることが好ましい。 In the case of the structure in which the sheet structure of the present invention is integrated, an upper layer having conductive performance is formed on the upper surface of the middle layer. In this case, the method is not particularly limited, but it is preferable to form a layer having conductive performance by printing or etching. A lower layer having conductive performance is formed on the entire lower surface of the middle layer. The method for forming the lower layer is not particularly limited, but it is preferable to form a layer having conductive performance by etching, vapor deposition, sputtering, or the like.
本発明のシートが各層を接着させた構造の場合、上層の形状は特に限定されること無く、繊維を用いた織編物・不織布、フィルム、樹脂やプラスチックなど何を用いても良いが、シート製造時の加工性を考えた場合、織編物やフィルムであることが好ましい。また、素材としても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)などのポリオレフィン、ポリカーボネート(PC)、ポリイミド(PI)など特に限定されることは無い。 When the sheet of the present invention has a structure in which each layer is bonded, the shape of the upper layer is not particularly limited, and any material such as woven / knitted fabric / nonwoven fabric, film, resin or plastic using fibers may be used. When considering the workability at the time, a woven or knitted fabric or a film is preferable. In addition, as materials, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) and other polyesters, nylon 6, nylon 66, nylon 12 and other aliphatic polyamides, There is no particular limitation on aromatic polyamides such as polyparaphenylene terephthalamide and polymetaphenylene terephthalamide, polyolefins such as polypropylene (PP) and polyethylene (PE), polycarbonate (PC) and polyimide (PI).
また、中層は、前述したように、800MHzから5GHzで誘電正接が0.01以下となる形状・素材であれば良い。 Further, as described above, the middle layer may be any shape / material that has a dielectric loss tangent of 0.01 or less from 800 MHz to 5 GHz.
下層は、電気抵抗値が1m2あたり1Ω以下で全面に電磁波シールド性能を有したものであれば特に限定されない。前述のように、シート製造時の加工性を考えた場合、繊維布帛に銅、ニッケルでメッキされた布帛や、フィルム面に銅、銀、アルミニウムなどを蒸着させたフィルム状のもの、銅箔やアルミ箔などの金属箔などが好ましく、これらを使用することで、良好な通信状態を保つことができる。 The lower layer is not particularly limited as long as the electrical resistance value is 1Ω or less per 1 m 2 and the entire surface has electromagnetic shielding performance. As mentioned above, when considering the workability at the time of sheet manufacture, the fabric is a fabric that is plated with copper or nickel on the fiber fabric, the film-like one in which copper, silver, aluminum or the like is evaporated on the film surface, the copper foil, A metal foil such as an aluminum foil is preferable, and a good communication state can be maintained by using these.
以上の本発明の通信用シート構造体におけるシート全体の目付けは、好ましくは200g/m2から800g/m2、さらに好ましくは250g/m2から600g/m2である。200g/m2未満では、通信するための構造体を得ることが出来ない。一方、800g/m2を超えると、非常に重くなるために容易に持ち運ぶことが出来なくなる。 The basis weight of the entire sheet in the communication sheet structure of the present invention is preferably 200 g / m 2 to 800 g / m 2 , more preferably 250 g / m 2 to 600 g / m 2 . If it is less than 200 g / m 2 , a structure for communication cannot be obtained. On the other hand, if it exceeds 800 g / m 2 , it becomes very heavy and cannot be easily carried.
なお、本発明の通信用シート構造体は、その使用環境に合わせて、上層部表面に保護層を持たせる場合がある。その場合の保護層は、使用環境に合わせて適宜設定すれば良い。
保護層としては、PETやPENなどのポリエステルフィルム、PEやPPなどのポリオレフィンフィルム、ポリイミドフィルム、エチレン−ビニルアルコールフィルムなどのフィルムや、アクリル系樹脂、ウレタン系樹脂などの樹脂が挙げられる。
In addition, the communication sheet structure of the present invention may have a protective layer on the surface of the upper layer part according to the use environment. The protective layer in that case may be appropriately set according to the use environment.
Examples of the protective layer include polyester films such as PET and PEN, polyolefin films such as PE and PP, films such as polyimide films and ethylene-vinyl alcohol films, and resins such as acrylic resins and urethane resins.
以下、実施例より本発明をさらに詳細に説明する。通信性能の評価方法、判定は次のとおりである。
1)評価方法
図3に示したように、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、アジデント社製、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、10cm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、シート構造体上で2.45GHzにピークを持つものを使用した。
Hereinafter, the present invention will be described in more detail with reference to examples. The evaluation method and determination of communication performance are as follows.
1) Evaluation method As shown in FIG. 3, two proximity connectors placed on the sheet structure are arranged at a distance r, and a transmission coefficient X at 2.45 GHz is obtained using a network analyzer manufactured by Agilent. measure. Here, the distance between the proximity connectors was 10 cm and measured from 10 cm to 80 cm. The proximity connector used was a connector having a peak at 2.45 GHz on the sheet structure.
2)判定
2−1)計測した透過係数Xの平均値(Xav.)を算出した。Xav.≧−30dBであれば合格とし、それ以外は不合格とする。
2−2)最大透過係数(Xmax)と最小透過係数(Xmin)の差(ΔX)を算出し、ΔX≦10dBであれば合格とし、それ以外は不合格とした。
2) Determination 2-1) The average value (Xav.) Of the measured transmission coefficient X was calculated. Xav. ≧ −30 dB is acceptable, otherwise it is unacceptable.
2-2) The difference (ΔX) between the maximum transmission coefficient (Xmax) and the minimum transmission coefficient (Xmin) was calculated. If ΔX ≦ 10 dB, the result was acceptable, and the others were unacceptable.
3)測定
3−1)電気抵抗値
三菱化学製「ロレスタMP MCP−T350」を用いて、上層および下層の電気抵抗値を測定した。
3−2)誘電正接
2.45GHzでの誘電正接を、円筒空胴共振器法にて測定した。
3) Measurement 3-1) Electrical resistance value The electrical resistance value of the upper layer and the lower layer was measured using "Loresta MP MCP-T350" manufactured by Mitsubishi Chemical Corporation.
3-2) Dielectric loss tangent The dielectric loss tangent at 2.45 GHz was measured by the cylindrical cavity resonator method.
実施例1
上層には銀ペーストを格子状にプリントした100μmのポリエチレンテレフタレート(PET)フィルム(帝人デュポンフィルム社製、テトロンフィルムSL、以下同じ)、中層には厚さ1mm、目付け110g/m2のPET不織布(オーツカ社製、ニードルパンチ不織布、以下同じ)、下層にはPET布帛に銅・ニッケルをメッキした目付85g/m2の電磁波シールド布帛(帝人ファイバー社製「ST2050」、以下同じ)を使用した。上層の格子形状は、線幅が0.6mm、線間隔が10mmであり、導電部比率は11%である。これらを、目付け30g/m2のエステル系ホットメルト樹脂(東レファインケミカル社製ケミットフィルム、以下同じ)を用いて130℃×1分の熱をかけて接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり1Ω、中層の誘電正接は0.01、下層の電気抵抗値は0.03Ωであった。
Example 1
The upper layer is a 100 μm polyethylene terephthalate (PET) film (Tetoron DuPont Films, Tetron film SL, hereinafter the same) printed with a silver paste in a grid pattern, and the middle layer is a PET nonwoven fabric with a thickness of 1 mm and a basis weight of 110 g / m 2 ( Otsuka's needle punched nonwoven fabric, the same applies hereinafter), and the lower layer was an electromagnetic shielding fabric with a basis weight of 85 g / m 2 plated with copper / nickel on a PET fabric (“ST2050” manufactured by Teijin Fibers Limited, the same applies hereinafter). The lattice shape of the upper layer has a line width of 0.6 mm, a line interval of 10 mm, and a conductive part ratio of 11%. These were adhered by applying heat at 130 ° C. for 1 minute using an ester-based hot melt resin having a basis weight of 30 g / m 2 (a chemit film manufactured by Toray Fine Chemical Co., Ltd., the same shall apply hereinafter). The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electrical resistance value of the upper conductive portion was 1Ω per 1 m 2 , the dielectric tangent of the middle layer was 0.01, and the electrical resistance value of the lower layer was 0.03Ω.
実施例2
上層には銀ペーストを格子状にプリントした100μmのPETフィルム、中層には厚さ1mm、目付け110g/m2のPET不織布、下層にはPET布帛に銅・ニッケルをメッキした目付85g/m2の電磁波シールド布帛を使用した。上層の格子形状は、線幅が1.4mm、線間隔が5mmであり、導電部比率は43%である。これらを、目付け30g/m2のエステル系ホットメルト樹脂を用いて130℃×1分の熱をかけて接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.3Ω、中層の誘電正接は0.01、下層の電気抵抗値は0.03Ωであった。
Example 2
The upper layer is a 100 μm PET film in which a silver paste is printed in a grid pattern, the middle layer is a PET nonwoven fabric with a thickness of 1 mm and a basis weight of 110 g / m 2 , and the lower layer is a basis weight of 85 g / m 2 with copper / nickel plated on the PET fabric. An electromagnetic shielding fabric was used. The upper layer lattice shape has a line width of 1.4 mm, a line interval of 5 mm, and a conductive portion ratio of 43%. These were adhered by applying heat at 130 ° C. for 1 minute using an ester hot melt resin having a basis weight of 30 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electrical resistance value of the upper conductive part was 0.3Ω per 1 m 2 , the dielectric tangent of the middle layer was 0.01, and the electrical resistance value of the lower layer was 0.03Ω.
実施例3
上層には銅箔を格子状にエッチングした13μmのポリイミド(PI)フィルム(信越化学工業社製のフレキシブル銅張積層板、以下同じ)、中層には厚さ1mm、目付け110g/m2のPET不織布、下層にはPET布帛に銅・ニッケルをメッキした目付85g/m2の電磁波シールド布帛を使用した。上層の格子形状は、線幅が1mm、線間隔が7mmであり、導電部比率は15%である。これらを、目付け30g/m2のナイロン系ホットメルト樹脂を用いて130℃×1分の熱をかけて接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.03Ω、中層の誘電正接は0.01、下層の電気抵抗値は0.03Ωであった。
Example 3
The upper layer is a 13 μm polyimide (PI) film (a flexible copper clad laminate manufactured by Shin-Etsu Chemical Co., Ltd., the same shall apply hereinafter) obtained by etching copper foil in a lattice shape, and the middle layer is a PET nonwoven fabric with a thickness of 1 mm and a basis weight of 110 g / m 2 . For the lower layer, an electromagnetic shielding fabric having a basis weight of 85 g / m 2 obtained by plating copper / nickel on a PET fabric was used. The upper layer lattice has a line width of 1 mm, a line interval of 7 mm, and a conductive portion ratio of 15%. These were adhered by applying heat at 130 ° C. for 1 minute using a nylon hot melt resin having a basis weight of 30 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electric resistance value of the upper conductive portion was 0.03Ω per 1 m 2 , the dielectric tangent of the middle layer was 0.01, and the electric resistance value of the lower layer was 0.03Ω.
実施例4
上層には銀ペーストを格子状にプリントした100μmのPETフィルム、中層には厚さ1mmの低密度ポリエチレン樹脂(下関パッキング社製の軟質ポリエチレン板)、下層にはアルミニウムを蒸着させた厚さ10μmのエバールフィルム(クラレ社製のVM−XL)を使用した。上層の格子形状は、線幅が1mm、線間隔が7mmであり、導電部比率は15%である。これらを、SBR系接着剤(住友スリーエム社製の3Mスプレーのり77、以下同じ)を塗布量が20g/m2になるようスプレーにて均一に吹き付け接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.3Ω、中層の誘電正接は0.007、下層の電気抵抗値は0.9Ωであった。
Example 4
The upper layer is a 100 μm PET film printed with a silver paste in a grid pattern, the middle layer is a 1 mm thick low-density polyethylene resin (soft polyethylene plate manufactured by Shimonoseki Packing), and the lower layer is a 10 μm thick aluminum vapor-deposited layer. Eval film (VM-XL manufactured by Kuraray Co., Ltd.) was used. The upper layer lattice has a line width of 1 mm, a line interval of 7 mm, and a conductive portion ratio of 15%. These were adhered by spraying a SBR adhesive (3M spray paste 77 manufactured by Sumitomo 3M Co., Ltd., the same hereinafter) by spraying so that the coating amount was 20 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electric resistance value of the upper conductive portion was 0.3Ω per 1 m 2 , the dielectric loss tangent of the middle layer was 0.007, and the electric resistance value of the lower layer was 0.9Ω.
実施例5
上層には銅箔を格子状にエッチングした13μmのPIフィルム、中層には厚さ1mmのポリカーボネート樹脂板(帝人化成社製のパンライト)、下層にはPET布帛に銅・ニッケルをメッキした目付85g/m2の電磁波シールド布帛を使用した。上層の格子形状は、線幅が1mm、線間隔が7mmであり、導電部比率は15%である。これらを、SBR系接着剤を塗布量が20g/m2になるようスプレーにて均一に吹き付け接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.03Ω、中層の誘電正接は0.008、下層の電気抵抗値は0.03Ωであった。
Example 5
The upper layer is a 13 μm PI film obtained by etching copper foil in a lattice shape, the middle layer is a 1 mm thick polycarbonate resin plate (Panlite manufactured by Teijin Chemicals), and the lower layer is a 85 g basis weight with copper / nickel plated PET fabric. An electromagnetic shielding fabric of / m 2 was used. The upper layer lattice has a line width of 1 mm, a line interval of 7 mm, and a conductive portion ratio of 15%. These were adhered by spraying the SBR-based adhesive uniformly with a spray so that the coating amount was 20 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electric resistance value of the upper conductive portion was 0.03Ω per 1 m 2 , the dielectric loss tangent of the middle layer was 0.008, and the electric resistance value of the lower layer was 0.03Ω.
比較例1
上層には銀ペーストを格子状にプリントした100μmのPETフィル、中層には厚さ1mm、目付け110g/m2のPET不織布、下層にはPET布帛に銅・ニッケルをメッキした電磁波シールド布帛を使用した。上層の格子形状は、線幅が0.4mm、線間隔が10mmであり、導電部比率は7%である。これらを、目付け30g/m2のエステル系ホットメルト樹脂を用いて130℃×1分の熱をかけて接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり2Ω、中層の誘電正接は0.01、下層の電気抵抗値は0.03Ωであった。
Comparative Example 1
The upper layer used was a 100 μm PET film in which a silver paste was printed in a lattice pattern, the middle layer was a PET nonwoven fabric with a thickness of 1 mm and a basis weight of 110 g / m 2 , and the lower layer was an electromagnetic shielding fabric in which copper and nickel were plated on the PET fabric. . The lattice shape of the upper layer has a line width of 0.4 mm, a line interval of 10 mm, and a conductive part ratio of 7%. These were adhered by applying heat at 130 ° C. for 1 minute using an ester hot melt resin having a basis weight of 30 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. Electrical resistance of the conductive portion of the upper layer is 2Ω per 1 m 2, the dielectric loss tangent of the middle layer is 0.01, the electrical resistance of the lower layer was 0.03Omu.
比較例2
上層には銀ペーストを格子状にプリントした100μmのPETフィルム、中層には厚さ1mm、目付け110g/m2のPET不織布、下層にはPET布帛に銅・ニッケルをメッキした電磁波シールド布帛を使用した。上層の格子形状は、線幅が2mm、線間隔が5mmであり、導電部比率は50%である。これらを、目付け30g/m2のエステル系ホットメルト樹脂を用いて130℃×1分の熱をかけて接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.2Ω、中層の誘電正接は0.01、下層の電気抵抗値は0.03Ωであった。
Comparative Example 2
The upper layer is a 100 μm PET film printed with a silver paste in a grid pattern, the middle layer is a PET nonwoven fabric with a thickness of 1 mm and a basis weight of 110 g / m 2 , and the lower layer is an electromagnetic shielding fabric in which copper and nickel are plated on the PET fabric. . The upper layer lattice shape has a line width of 2 mm, a line interval of 5 mm, and a conductive portion ratio of 50%. These were adhered by applying heat at 130 ° C. for 1 minute using an ester hot melt resin having a basis weight of 30 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electrical resistance value of the upper conductive part was 0.2Ω per 1 m 2 , the dielectric tangent of the middle layer was 0.01, and the electrical resistance value of the lower layer was 0.03Ω.
比較例3
上層には銀ペーストを格子状にプリントした100μmのPETフィルム、中層には厚さ1mmの塩化ビニル樹脂板(下関パッキング社製の硬質塩化ビニル板)、下層にはPET布帛に銅・ニッケルをメッキした電磁波シールド布帛を使用した。上層の格子形状は、線幅が1mm、線間隔が7mmであり、導電部比率は15%である。これらを、SBR系接着剤を塗布量が20g/m2になるようスプレーにて均一に吹き付け接着させた。下層と中層をまず接着させ、その後、上層を接着する手順で行った。上層の導電部の電気抵抗値は1m2あたり1Ω、中層の誘電正接は0.02、下層の電気抵抗値は0.03Ωであった。
Comparative Example 3
The upper layer is a 100 μm PET film printed with a silver paste in a grid pattern, the middle layer is a 1 mm thick vinyl chloride resin plate (hard vinyl chloride plate manufactured by Shimonoseki Packing), and the lower layer is plated with copper / nickel on a PET fabric The electromagnetic shielding cloth which was made was used. The upper layer lattice has a line width of 1 mm, a line interval of 7 mm, and a conductive portion ratio of 15%. These were adhered by spraying the SBR-based adhesive uniformly with a spray so that the coating amount was 20 g / m 2 . The lower layer and the middle layer were first bonded, and then the upper layer was bonded. The electrical resistance value of the upper conductive portion was 1Ω per 1 m 2 , the dielectric loss tangent of the middle layer was 0.02, and the electrical resistance value of the lower layer was 0.03Ω.
比較例4
上層には銀ペーストを格子状にプリントした100μmのPETフィルム、中層には厚さ1mm、目付け110g/m2のPET不織布とし、下層にはカーボンブラックを配合させたアクリル樹脂(大日本インキ化学工業社製のディックナール)を50μm厚に塗布した。上層の格子形状は、線幅が1mm、線間隔が7mmであり、導電部比率は15%である。これらを、目付け30g/m2のエステル系ホットメルト樹脂を用いて130℃×1分の熱をかけて接着させた。上層と中層をまず接着させ、その後、下層に樹脂を塗布する手順で行った。上層の導電部の電気抵抗値は1m2あたり0.3Ω、中層の誘電正接は0.01、下層の電気抵抗値は5Ωであった。
実施例1〜5、比較例1〜4のシート構成、通信評価結果を表1に記載した。
Comparative Example 4
PET film of 100μm in upper layer was printed silver paste in a grid, 1mm thick in the middle layer, and a PET nonwoven fabric having a basis weight of 110g / m 2, the acrylic resin in the lower layer obtained by blending carbon black (manufactured by Dainippon Ink and Chemicals, Co., Ltd. Dicknal) was applied to a thickness of 50 μm. The upper layer lattice has a line width of 1 mm, a line interval of 7 mm, and a conductive portion ratio of 15%. These were adhered by applying heat at 130 ° C. for 1 minute using an ester hot melt resin having a basis weight of 30 g / m 2 . The upper layer and the middle layer were first bonded, and then the resin was applied to the lower layer. The electrical resistance value of the upper conductive portion was 0.3Ω per 1 m 2 , the dielectric tangent of the middle layer was 0.01, and the electrical resistance value of the lower layer was 5Ω.
Table 1 shows the sheet configurations and communication evaluation results of Examples 1 to 5 and Comparative Examples 1 to 4.
評価結果:
○・・・通信可能
△・・・一部通信不可能
×・・・通信不可能
Evaluation results:
○ ・ ・ ・ Communication △ ・ ・ ・ Partial communication impossible × ・ ・ ・ Communication impossible
本発明の通信用シート構造体は、周波数が800MHzから5GHzの周波数帯で、2次元での通信が可能であり、1次元の有線LANや3次元の無線LANの代替に有用である。 The communication sheet structure according to the present invention is capable of two-dimensional communication in a frequency band of 800 MHz to 5 GHz, and is useful as an alternative to a one-dimensional wired LAN or a three-dimensional wireless LAN.
Claims (5)
上層:導電性能を有する層であり、該層には導電部と非導電部が存在し、該導電部の割合が8%から45%であり、導電部が完全に途切れることなく連続し、その導電部の電気抵抗値が1m2あたり5Ω以下である、フィルムからなる層。
中層:周波数800MHzから5GHzでの誘電正接が0.01以下である、ポリエステルまたはポリオレフィンからなる、繊維構造体もしくは発泡樹脂シートからなる層。
下層:全面に導電性を有し、1m2あたりの電気抵抗値が1Ω以下である、繊維構造体、フィルム、または金属箔からなる層。 A communication sheet structure comprising a sheet structure composed of at least the following three layers of an upper layer, a middle layer, and a lower layer, and capable of two-dimensional communication.
Upper layer: a layer having conductive performance, in which the conductive portion and the non-conductive portion are present, the proportion of the conductive portion is 8% to 45%, and the conductive portion is continuous without any interruption, electrical resistance of the conductive portion is equal to or less than 5Ω per 1 m 2, a layer made of a film.
Middle layer: A layer composed of a fiber structure or a foamed resin sheet, made of polyester or polyolefin, having a dielectric loss tangent of 0.01 or less at a frequency of 800 MHz to 5 GHz.
Lower layer: A layer made of a fiber structure, a film, or a metal foil having conductivity on the entire surface and having an electric resistance value of 1Ω or less per 1 m 2 .
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JP5260089B2 (en) * | 2008-03-07 | 2013-08-14 | 帝人株式会社 | Communication sheet structure and fixture having a top plate using the same |
JP2011097578A (en) * | 2009-09-30 | 2011-05-12 | Nitto Denko Corp | Low dielectric sheet for two-dimensional communication, production method therefor, and sheet structure for communication |
JP5976714B2 (en) * | 2009-09-30 | 2016-08-24 | 日東電工株式会社 | Low-dielectric sheet for two-dimensional communication, manufacturing method thereof, and sheet structure for communication |
KR20210095932A (en) * | 2018-12-28 | 2021-08-03 | 데이진 가부시키가이샤 | Communication sheet and power transmission method |
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JP2002026568A (en) * | 2000-07-10 | 2002-01-25 | Kumagai Gumi Co Ltd | Sheet material |
JP2005322052A (en) * | 2004-05-10 | 2005-11-17 | Hokkaido Technology Licence Office Co Ltd | Ubiquitous system, device connection method, electroconductive cloth, electroconductive clothes and electroconductive wall |
JP2006229641A (en) * | 2005-02-18 | 2006-08-31 | Serukurosu:Kk | Communication apparatus |
JP2006270165A (en) * | 2005-03-22 | 2006-10-05 | Serukurosu:Kk | Communication system, interface device, sheet device |
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