JPH0691340B2 - Substrate for filter - Google Patents
Substrate for filterInfo
- Publication number
- JPH0691340B2 JPH0691340B2 JP60198889A JP19888985A JPH0691340B2 JP H0691340 B2 JPH0691340 B2 JP H0691340B2 JP 60198889 A JP60198889 A JP 60198889A JP 19888985 A JP19888985 A JP 19888985A JP H0691340 B2 JPH0691340 B2 JP H0691340B2
- Authority
- JP
- Japan
- Prior art keywords
- transparent thermoplastic
- resin plate
- thermoplastic resin
- mesh
- filament surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【発明の詳細な説明】 本発明は電磁波シールド性を有する陰極線管（CRT）フ
ィルターの製造に好適な基板に関するものである。The present invention relates to a substrate suitable for manufacturing a cathode ray tube (CRT) filter having an electromagnetic wave shielding property.
近年、オフィス・オートメーション、ファクトリー・オ
ートメーションが進みビジュアル・ディスプレイ・ター
ミナル作業が急増する中で、陰極線管（以下CRTと称
す）の前面より漏洩する電磁波による作業者の眼の障害
が懸念されている。そのため、漏洩電磁波に対しシール
ド性能を有するCRTフィルターの需要が高まって来てい
る。この目的のため、これまでにも透明樹脂板などの透
明基材の表面に透明導電性塗料を塗布する方法や、銅網
などの金網を透明熱可塑性樹脂板と、加熱、加圧して積
層一体化させる方法などが提案されている。しかしなが
らこれらの方法のうち、前者は、塗料の導電性が十分で
はなく、電磁波シールド性能が低いという欠点を有し、
かつ、塗料と基材の密着性が小さいため、はく離の問題
を生じ易い。また後者については金網の線膨張係数と透
明熱可塑性樹脂板の線膨張係数が大きく異なるためソ
リ、クラックなどの問題を生じ易いという欠点を有す
る。In recent years, as office automation and factory automation have advanced and the work of visual display terminals has been rapidly increasing, there is a concern that the electromagnetic waves leaking from the front of a cathode ray tube (hereinafter referred to as CRT) may damage the eyes of workers. Therefore, the demand for a CRT filter having a shielding performance against leaked electromagnetic waves is increasing. For this purpose, a method of applying a transparent conductive paint to the surface of a transparent substrate such as a transparent resin plate or a wire mesh such as a copper mesh is laminated with a transparent thermoplastic resin plate by heating and pressurizing. The method of making it real is proposed. However, of these methods, the former has the drawback that the conductivity of the paint is not sufficient and the electromagnetic wave shielding performance is low,
Moreover, since the adhesiveness between the coating material and the substrate is small, the problem of peeling is likely to occur. In the latter case, the linear expansion coefficient of the wire mesh and the linear expansion coefficient of the transparent thermoplastic resin plate are greatly different, so that problems such as warpage and cracks are likely to occur.
本発明者はこうした状況に鑑み、鋭意検討した結果、本
発明に到達した。The present inventor has arrived at the present invention as a result of extensive studies in view of such circumstances.
本発明は、２枚の透明熱可塑性樹脂板の間にフィラメン
ト表面が金属化された合成繊維網状体を位置せしめると
ともに少なくともいずれか一方の透明熱可塑性樹脂板と
フィラメント表面が金属化された合成繊維網状体との間
に透明熱可塑性樹脂板より低い軟化点を有する軟質透明
熱可塑性フィルムを位置せしめ、この状態のまま、これ
らを加熱、加圧して積層一体化させることを特徴とする
CRTフィルター用基板である。According to the present invention, a synthetic fiber network in which a filament surface is metallized is positioned between two transparent thermoplastic resin plates, and at least one of the transparent thermoplastic resin plate and the synthetic fiber network in which a filament surface is metalized. Characterized in that a soft transparent thermoplastic film having a softening point lower than that of the transparent thermoplastic resin plate is positioned between and, and in this state, they are heated and pressed to be laminated and integrated.
Substrate for CRT filter.
本発明の方法はこれまでの金網を透明熱可塑性樹脂板と
加熱、加圧して積層一体化させる方法にくらべ、金網の
代りにフィラメント表面が金属化された合成繊維網状体
を使用するため安価であり、かつ、金網にくらべフィラ
メント表面が金属化された合成繊維網状体の線膨張係数
と、透明熱可塑性樹脂板の線膨張係数が近いためソリ、
クラックなどの問題が生じ難いという長所を有する。The method of the present invention is less expensive than the conventional method of heating and pressing a wire mesh with a transparent thermoplastic resin plate to laminate and integrate, and uses a synthetic fiber mesh in which the filament surface is metallized instead of the wire mesh. Yes, and since the linear expansion coefficient of the synthetic fiber network in which the filament surface is metallized is closer to the linear expansion coefficient of the transparent thermoplastic resin plate than the wire mesh,
It has an advantage that problems such as cracks hardly occur.
さらに透明熱可塑性樹脂板より低い軟化点を有する軟質
透明熱可塑性フィルムを使用することにより、軟質透明
熱可塑性フィルムを使用しない場合と比較して、加熱、
加圧による積層一体化が低温、低圧で可能となる。その
結果、電磁波シールド性能の低下の原因となる網状体の
劣化や網目の拡がり等の変形を防止することが出来る。
また、透明熱可塑性樹脂板の軟化点以下での積層一体化
が出来るので基板表面の鏡面状態を損なうことも少なく
なり更には基板の耐はく離性も向上する。Furthermore, by using a soft transparent thermoplastic film having a softening point lower than that of the transparent thermoplastic resin plate, compared with the case of not using a soft transparent thermoplastic film, heating,
Stacking and integration by pressurization is possible at low temperature and low pressure. As a result, it is possible to prevent the deterioration of the mesh-like body and the deformation such as the expansion of the mesh, which causes the deterioration of the electromagnetic wave shielding performance.
Further, since the laminated layers can be integrated below the softening point of the transparent thermoplastic resin plate, the mirror surface state of the substrate surface is less damaged, and the peeling resistance of the substrate is also improved.
また、積層一体化された基板の表面に防眩処理や反射防
止処理を施して電磁波シールド性とともに防眩効果や反
射防止効果を付与することが出来る。In addition, the surface of the laminated and integrated substrates can be subjected to an antiglare treatment or an antireflection treatment to impart an electromagnetic wave shielding property and an antiglare effect or an antireflection effect.
防眩処理方法としては特開昭57-204002号公報、反射防
止処理方法としては特公昭45-6193号公報に記載の方法
などで実施可能である。The antiglare treatment method can be carried out by the method described in JP-A-57-204002, and the antireflection treatment method can be carried out by the method described in JP-B-45-6193.
なお一方透明熱可塑性樹脂板との積層構造をとらず、フ
ィラメント表面が金属化された合成樹脂網状体を単体で
使用することも考えられるがこの場合にはフィラメント
表面が金属化された合成樹脂網状体が大気雰囲気中に曝
されるため、酸化による電磁波シールド性能の経時低下
の恐れを有するとともに透明熱可塑性板との積層構造の
場合とくらべ機械的強度の点で問題がある。On the other hand, it is conceivable to use a synthetic resin mesh with the filament surface metallized as a single body without taking the laminated structure with the transparent thermoplastic resin plate, but in this case the filament surface is metallized synthetic resin mesh Since the body is exposed to the air atmosphere, there is a risk of deterioration of electromagnetic wave shielding performance due to oxidation over time, and there is a problem in mechanical strength as compared with a laminated structure with a transparent thermoplastic plate.
本発明に用いられる透明熱可塑性樹脂板はとくに限定さ
れないが例えば透明メタアクリル樹脂板、透明ポリカー
ボネート樹脂板などがあげられる。樹脂板の厚さとして
は0.05〜5mmの範囲のものが用いられ、特に好ましくは
１〜3mmで用いられる。The transparent thermoplastic resin plate used in the present invention is not particularly limited, but examples thereof include a transparent methacrylic resin plate and a transparent polycarbonate resin plate. The resin plate has a thickness in the range of 0.05 to 5 mm, particularly preferably 1 to 3 mm.
フィラメント表面が金属化された合成繊維網状体として
はフィラメント表面を銅あるいはニッケルなどをメッキ
したポリエステル沙織物などがあげられる。合成繊維の
種類としては各種考えられるが強度、耐久性およびメッ
キの前処理であるエッチッングのし易さなどからポリエ
ステルが好ましい。フィラメント表面を金属化した上に
さらに染料や顔料で艶あるいは暗色に着色したものはCR
T画像のちらつきや眩しさを抑制する上で有効である。
また織り目が粗くなると電磁波シールド性能が低下し、
一方織り目が細かくなるとCRTの画像が見え難くなるた
め、織り目の密度としては50〜300メッシュ／インチ、
特に好ましくは100〜200メッシュ／インチである。網状
体の厚さとしては20〜200μｍ、特に好ましくは50〜100
μｍである。Examples of the synthetic fiber reticulate body in which the filament surface is metallized include a polyester fiber woven fabric in which the filament surface is plated with copper or nickel. Although various kinds of synthetic fibers can be considered, polyester is preferable in terms of strength, durability, and ease of etching as a pretreatment for plating. CR is used when the filament surface is metallized and then dyed or pigmented to give a glossy or dark color.
T Effective in suppressing flickering and glare of images.
Also, when the texture becomes coarse, the electromagnetic wave shielding performance deteriorates,
On the other hand, when the texture becomes finer, the CRT image becomes difficult to see, so the density of the texture is 50 to 300 mesh / inch,
Particularly preferably, it is 100 to 200 mesh / inch. The thickness of the mesh is 20 to 200 μm, particularly preferably 50 to 100
μm.
軟質透明熱可塑性フィルムとしては高透明低軟化点樹脂
フィルムが用いられアクリルフィルム、塩化ビニルフィ
ルムなどが具体的に例示される。フィルムの軟化点とし
てはJISK7206により測定したビカット軟化点が40〜100
℃、特に好ましくは50〜80℃のものである。A highly transparent low softening point resin film is used as the soft transparent thermoplastic film, and acrylic films, vinyl chloride films and the like are specifically exemplified. As the softening point of the film, the Vicat softening point measured by JIS K7206 is 40 to 100.
C., particularly preferably 50 to 80.degree.
フィルムの厚さとしては10〜200μｍ特に好ましくは20
〜100μｍである。The thickness of the film is 10 to 200 μm, particularly preferably 20.
~ 100 μm.
また加熱、加圧により積層一体化する方法はとくに限定
されないが、例えば加圧による場合には通常の加圧プレ
ス法で実施することができる。プレス温度としては110
〜180℃、プレス圧力としては10〜50Kg/cm2の条件を用
いることができる。Further, the method of laminating and integrating by heating and pressing is not particularly limited, but for example, in the case of applying pressure, it can be carried out by an ordinary pressing method. Press temperature is 110
The conditions of ˜180 ° C. and the pressing pressure of 10˜50 Kg / cm 2 can be used.
また、加熱による場合には通常の加熱ロールによる圧着
貼合法で実施することができる。When heating is used, it can be carried out by an ordinary pressure bonding method using a heating roll.
この場合のロール表面加熱温度は通常上記プレス法で示
した温度範囲と同様である。The roll surface heating temperature in this case is usually the same as the temperature range shown in the above pressing method.
以下、本発明を実施例によりさらに詳しく説明する。Hereinafter, the present invention will be described in more detail with reference to Examples.
実施例１ たて27cm、よこ37cm、厚さ60μｍ、織り目の密度が150
メッシュ／インチのフィラメント表面が銅メッキされた
ポリエステル沙織物（（株）セーレン製）と、たて25c
m、よこ35cm、厚さ1.5mmの透明アクリル樹脂キヤスト板
（住友化学工業（株）製スミペックス ）と、たて25c
m、よこ35cm、厚さ20μｍの軟質アクリルフィルム（鐘
淵化学工業（株）サンジュレン SD003）とを第１図の
様に位置せしめ、更にこれらの上下にたて40cm、よこ40
cm、厚さ3mmの、アクリル樹脂板と接する側が鏡面仕上
げされたステンレス製当て板を当て、この状態のまま、
これらを50トン油圧プレス機に装填し、プレス温度150
℃、プレス圧力40Kg/cm2で10分間加熱、加圧して積層一
体化を行なった。冷却後ステンレス製当て板をはずし、
ソリやクラックのない透明性の優れたCRTフィルター用
基板を得た。このものの電磁波シールド性を測定したと
ころ、100〜1000MHzの周波数帯域で電界60〜80dB、磁界
40〜55dBのシールド効果が得られた。Example 1 Warp 27 cm, width 37 cm, thickness 60 μm, weave density 150
Mesh / inch filament surface is copper plated
Polyester fabric (made by Seiren Co., Ltd.) and 25c
m, width 35 cm, thickness 1.5 mm transparent acrylic resin cast board
(Sumipex manufactured by Sumitomo Chemical Co., Ltd. ) And 25c
m, width 35 cm, thickness 20 μm soft acrylic film (bell
Fuchi Chemical Industry Co., Ltd. Sanjuren SD003) and of Fig. 1
And position them vertically, and vertically 40 cm above and below them, horizontal 40
cm, thickness 3 mm, the side that contacts the acrylic resin plate has a mirror finish
Apply the stripped stainless steel patch, in this state,
These were loaded into a 50-ton hydraulic press and the press temperature was set to 150.
℃, press pressure 40Kg / cm2Heat for 10 minutes, pressurize to stack
It was embodied. After cooling, remove the stainless steel plate,
For CRT filters with excellent transparency without warping or cracks
A substrate was obtained. When the electromagnetic wave shielding property of this thing was measured
60 to 80 dB electric field and magnetic field in the frequency band of 100 to 1000 MHz
A shield effect of 40 to 55 dB was obtained.
実施例２ フィラメント表面が金属化された合成繊維網状体とし
て、たて27cm、よこ37cm、厚さ90μｍ、織り目の密度15
0メッシュ／インチのフィラメント表面がニッケルメッ
キされたポリエステル沙織物（（株）セーレン製）を使
用した以外は実施例１と同様にして積層一体化を行ない
ソリ、クラックもなく透明性の優れたCRTフィルター用
基板を得た。このものの電磁波シールド性を測定したと
ころ、100〜1000MHzの周波数帯域で電界40〜55dB、磁界
30〜50dBのシールド効果が得られた。Example 2 As a synthetic fiber network in which the filament surface was metallized, the length was 27 cm, the width was 37 cm, the thickness was 90 μm, and the texture density was 15
A CRT having excellent transparency without warping and cracking was carried out in the same manner as in Example 1 except that a polyester mesh fabric (made by Seiren Co., Ltd.) having a 0 mesh / inch filament surface nickel-plated was used. A filter substrate was obtained. When the electromagnetic wave shielding property of this thing was measured, the electric field 40-55dB, magnetic field in the frequency band of 100-1000MHz
A shield effect of 30 to 50 dB was obtained.
第１図は本発明の実施例を示すもので、CRTフィルター
用基板の断面図である。 1,2,……透明熱可塑性樹脂板、３……フィラメント表面
が金属化された合成繊維網状体、4,5,……軟質透明熱可
塑性フィルム。FIG. 1 shows an embodiment of the present invention and is a cross-sectional view of a CRT filter substrate. 1,2, ... Transparent thermoplastic resin plate, 3 ... Synthetic fiber mesh with metalized filament surface, 4,5, ... Soft transparent thermoplastic film.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−154898（ＪＰ，Ａ) 特開 昭60−34099（ＪＰ，Ａ) 実開 昭59−106176（ＪＰ，Ｕ) 実開 昭60−96897（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-154898 (JP, A) JP-A-60-34099 (JP, A) Actual opening 59-106176 (JP, U) Actual opening Sho- 60- 96897 (JP, U)
Claims (1)
ント表面が金属化された合成繊維網状体を位置せしめる
とともに、少なくともいずれか一方の透明熱可塑性樹脂
板とフィラメント表面が金属化された合成繊維網状体と
の間に透明熱可塑性樹脂板より低い軟化点を有する軟質
透明熱可塑性フィルムを位置せしめ、この状態のままこ
れらを加熱、加圧して積層一体化させることを特徴とす
るCRTフィルター用基板1. A synthetic fiber network in which a filament surface is metallized is located between two transparent thermoplastic resin plates, and at least one of the transparent thermoplastic resin plate and the filament surface is a synthetic fiber. A CRT filter substrate characterized in that a soft transparent thermoplastic film having a softening point lower than that of a transparent thermoplastic resin plate is positioned between the reticulated body, and these are heated and pressed in this state to be laminated and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60198889A JPH0691340B2 (en) | 1985-09-09 | 1985-09-09 | Substrate for filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60198889A JPH0691340B2 (en) | 1985-09-09 | 1985-09-09 | Substrate for filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6258699A JPS6258699A (en) | 1987-03-14 |
| JPH0691340B2 true JPH0691340B2 (en) | 1994-11-14 |
Family
ID=16398621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60198889A Expired - Lifetime JPH0691340B2 (en) | 1985-09-09 | 1985-09-09 | Substrate for filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0691340B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417619B1 (en) | 1997-04-10 | 2002-07-09 | Sumitomo Chemical Company, Limited | Front panel board for plasma display |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62178598U (en) * | 1986-04-30 | 1987-11-12 | ||
| JPH0272600U (en) * | 1988-11-18 | 1990-06-01 | ||
| JPH05100553A (en) * | 1991-10-11 | 1993-04-23 | Sharp Corp | Screen device for electrophotographic device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412255A (en) * | 1981-02-23 | 1983-10-25 | Optical Coating Laboratory, Inc. | Transparent electromagnetic shield and method of manufacturing |
| JPS59106176U (en) * | 1983-01-06 | 1984-07-17 | 森電機株式会社 | Screen filter with conductivity |
| JPS6034099A (en) * | 1983-08-04 | 1985-02-21 | 三菱レイヨン株式会社 | Electromagnetic shield with excellent transparency |
| JPS6096897U (en) * | 1983-12-07 | 1985-07-02 | 日東商事株式会社 | Electromagnetic shielding composite material |
-
1985
- 1985-09-09 JP JP60198889A patent/JPH0691340B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417619B1 (en) | 1997-04-10 | 2002-07-09 | Sumitomo Chemical Company, Limited | Front panel board for plasma display |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6258699A (en) | 1987-03-14 |
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