JPS6331373B2 - - Google Patents
Info
- Publication number
- JPS6331373B2 JPS6331373B2 JP58038176A JP3817683A JPS6331373B2 JP S6331373 B2 JPS6331373 B2 JP S6331373B2 JP 58038176 A JP58038176 A JP 58038176A JP 3817683 A JP3817683 A JP 3817683A JP S6331373 B2 JPS6331373 B2 JP S6331373B2
- Authority
- JP
- Japan
- Prior art keywords
- paste
- mesh
- sheet member
- unfoamed
- silicone rubber
- 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
Links
- 239000003094 microcapsule Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims 1
- 229920002379 silicone rubber Polymers 0.000 description 10
- 239000004945 silicone rubber Substances 0.000 description 10
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000005187 foaming Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は、例えば、キーボードスイツチのスイ
ツチング素子などに用いられるシート部材に係
り、特にこのシート部材の製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet member used, for example, as a switching element of a keyboard switch, and particularly to a method of manufacturing this sheet member.
以下、本発明のシート部材の製造方法について
説明する。 Hereinafter, a method for manufacturing a sheet member of the present invention will be explained.
第１図ないし第３図は本発明のシート部材の製
造方法を説明するための図で、第４図はペースト
内に混入される低温発泡の熱膨張性マイクロカプ
セルの拡大図である。 1 to 3 are diagrams for explaining the method of manufacturing a sheet member of the present invention, and FIG. 4 is an enlarged view of low-temperature foaming thermally expandable microcapsules mixed into the paste.
１は凹凸を有する導電体多孔体で、具体的には
150メツシユから250メツシユ程度の網体からな
る。この網体１は銅と亜鉛の合金やリン青銅、リ
ン青銅に金メツキを施したもの、あるいはステン
レススチールなどで構成され、その線径は約
40μ、上、下の凸部１ａ間の高さ（厚さ）は100μ
である。なお、本発明の実施例においては網体１
は200〜325メツシユのステンレス製の金属網体を
用いた。 1 is a conductive porous body having unevenness, specifically:
It consists of a web of about 150 to 250 meshes. The net 1 is made of a copper-zinc alloy, phosphor bronze, gold-plated phosphor bronze, or stainless steel, and its wire diameter is approximately
40μ, height (thickness) between upper and lower protrusions 1a is 100μ
It is. In addition, in the embodiment of the present invention, the mesh body 1
A stainless steel metal net with a mesh size of 200 to 325 was used.
そしてこのステンレス製の金属網体１の上、下
両面には、第１図に示すように、各凸部１ａを覆
う程度に第４図に示す熱膨張性マイクロカプセル
６を低温発泡剤として混入した未発泡のペースト
２を塗布する。なお、熱膨張性マイクロカプセル
６は外殻６ａには塩化ビニデン重合体、内側６ｂ
には低沸点炭化水素系ガスが封入されたもので、
未発泡時の粒子径は約10〜20μm、比重は約1.13
である。ペースト２の材料としては信越化学社製
シリコンゴム（付加反応型、製品KE1300RTV）
を用いた。 As shown in FIG. 1, thermally expandable microcapsules 6 shown in FIG. 4 are mixed as a low-temperature foaming agent into the upper and lower surfaces of the stainless steel metal net 1 to the extent that they cover each convex portion 1a. Apply unfoamed paste 2. The thermally expandable microcapsule 6 has an outer shell 6a made of vinylidene chloride polymer and an inner shell 6b made of vinylidene chloride polymer.
is filled with low boiling point hydrocarbon gas,
Unfoamed particle size is approximately 10-20μm, specific gravity is approximately 1.13
It is. The material for paste 2 is silicone rubber manufactured by Shin-Etsu Chemical (addition reaction type, product KE1300RTV).
was used.
次に前記ステンレス製の金属網体１の高さとほ
ぼ同一高さの開口３ａを有するナイフ３の前記開
口３ａに、未発泡のシリコンゴム（ペースト）２
を塗布したステンレス製の金属網体１を通過させ
ると、第２図に示すようにナイフ３によつて余分
なシリコンゴム（ペースト）２が削られ、ステン
レス製の金属網体１の各凸部１ａはシリコンゴム
（ペースト）２の表面から露出する。 Next, unfoamed silicone rubber (paste 2) is applied to the opening 3a of the knife 3, which has an opening 3a at approximately the same height as the stainless steel metal net 1.
When passing through the stainless steel metal mesh body 1 coated with , excess silicone rubber (paste) 2 is scraped off by a knife 3 as shown in FIG. 1a is exposed from the surface of silicone rubber (paste) 2.
その後に未発泡のシリコンゴム（ペースト）２
を100℃、２分間加熱させて熱膨張性マイクロカ
プセル６を膨張させ、第３図に示すように未発泡
のシリコンゴム（ペースト）２は各凸部１ａより
突出するまで独立発泡させる。発泡後のマイクロ
カプセル６の粒子径は約50〜60μm、比重は約
0.04〜0.05殻壁の厚さは約0.2μmである。発泡後
に、シリコンゴム（ペースト）２を80℃、２時間
で硬化させて絶縁性薄層４となり、シート部材５
を製造するのである。 Then unfoamed silicone rubber (paste) 2
is heated at 100° C. for 2 minutes to expand the thermally expandable microcapsules 6, and as shown in FIG. 3, the unfoamed silicone rubber (paste) 2 is foamed independently until it protrudes from each convex portion 1a. The particle size of the microcapsules 6 after foaming is approximately 50 to 60 μm, and the specific gravity is approximately
The thickness of the 0.04-0.05 shell wall is about 0.2 μm. After foaming, the silicone rubber (paste) 2 is cured at 80°C for 2 hours to form an insulating thin layer 4, and a sheet member 5 is formed.
is manufactured.
従来のシート部材の製造方法に用いられる未発
泡のペーストは、高温域で発泡するシリコン樹脂
用発泡剤が混入されたペーストが用いられていた
ために、この未発泡のペーストを発泡させるため
には高温域で加熱しなければならず、このために
網体は専ら金属製のものに限られ、表面金属の選
択にも制限を受ける欠点があつた。 The unfoamed paste used in conventional sheet member manufacturing methods is a paste mixed with a foaming agent for silicone resin that foams at high temperatures. This has the disadvantage that the mesh must be exclusively made of metal, and the choice of surface metal is also limited.
また、網体自身の精度（均一さ）は高分子材料
の網体にニツケルメツキを施したものの方が、金
属製網体よりも優れているが、高温域での発泡で
あるために網体の精度（均一さ）の悪い金属製網
体にたよらざるを得ない。 In addition, in terms of precision (uniformity) of the mesh itself, a polymer mesh with nickel plating is better than a metal mesh, but since the mesh is foamed in a high temperature range, We have no choice but to rely on metal nets with poor precision (uniformity).
しかしながら、本発明のシート部材の製造方法
においては、第４図に示すような外殻６ａには塩
化ビニリデン重合体、内側には低沸点炭化水素系
ガスが封入された熱膨張性マイクロカプセル６の
ように低温域（80〜150℃）で発泡する低温発泡
剤が混入されているので、高分子材ペーストを低
温域で独立発泡させることができ、80〜150℃の
温度範囲で発泡温度、発泡時間を変化させること
によつても発泡率がコントロールできる。 However, in the method for manufacturing a sheet member of the present invention, thermally expandable microcapsules 6 are used, as shown in FIG. As it contains a low-temperature foaming agent that foams in the low temperature range (80 to 150℃), the polymer paste can be foamed independently in the low temperature range, and the foaming temperature and foaming can be controlled within the temperature range of 80 to 150℃. The foaming rate can also be controlled by changing the time.
また、熱膨張性マイクロカプセル６が低温域
（80〜150℃）で発泡することから、網体の精度
（均一さ）の悪い金属製網体に代えて、網体の精
度（均一さ）の優れた網体にニツケルメツキを施
した高分子材料製の網体を用いることができ、網
体の選択範囲が拡張される。 In addition, since the thermally expandable microcapsules 6 foam in a low temperature range (80 to 150°C), it can be used instead of a metal mesh with poor mesh precision (uniformity). It is possible to use a mesh made of a high-quality polymeric material with nickel plating, which expands the range of mesh selection.
さらに、未発泡のマイクロカプセルを発泡させ
る前に、網体に充填したペーストをスキージング
してペースト内に網目の凸部を露出させてなるも
のであるから、発泡シリコンゴム等からなる絶縁
性薄層４に導電性の網体１が一部を露出して埋設
されたシート部材５を簡単な工程にて製造でき
る。従つて、このようにして製造されたシート部
材５をキーボードスイツチ等の感圧スイツチング
素子として用いた場合、長期にわたつて安定した
スイツチング動作が得られる。 Furthermore, before foaming the unfoamed microcapsules, the paste filled in the mesh is squeegeeed to expose the convex portions of the mesh within the paste, so the insulating thin film made of foamed silicone rubber, etc. The sheet member 5 in which the conductive net 1 is partially exposed and buried in the layer 4 can be manufactured by a simple process. Therefore, when the sheet member 5 manufactured in this manner is used as a pressure-sensitive switching element such as a keyboard switch, stable switching operation can be obtained over a long period of time.
以上詳述したように、本発明によれば、導電性
網体に網目の一部が露出するように絶縁性薄層を
膨出させたシート部材を生産することができるた
め、特にこのシート部材を感圧スイツチング素子
として用いた場合、長期にわたつて安定したスイ
ツチング動作が得られ、また、、前記絶縁性薄層
を低温域で発泡させることができるため、網体の
材質や構造等の選択範囲が拡張され、その産業的
価値は高い。 As described in detail above, according to the present invention, it is possible to produce a sheet member in which the insulating thin layer is bulged out so that a part of the mesh is exposed in the conductive network, so this sheet member is particularly advantageous. When used as a pressure-sensitive switching element, stable switching operation can be obtained over a long period of time, and the insulating thin layer can be foamed at low temperatures, so the selection of the material and structure of the net body, etc. Its range has been expanded and its industrial value is high.
第１図から第３図は本発明のシート部材の製造
方法を説明する図、第４図は本発明のシート部材
の製造方法に用いられるシリコンゴム（ペース
ト）内に混入される熱膨張性マイクロカプセルの
拡大断面図である。
１……網体、２……シリコンゴム（ペースト）、
４……絶縁性薄層、５……シート部材、６……熱
膨張性マイクロカプセル、６ａ……外殻、６ｂ…
…内側。
Figures 1 to 3 are diagrams explaining the method for manufacturing the sheet member of the present invention, and Figure 4 is a diagram showing thermally expandable microorganisms mixed into the silicone rubber (paste) used in the method for manufacturing the sheet member of the present invention. FIG. 3 is an enlarged cross-sectional view of the capsule. 1...Network, 2...Silicone rubber (paste),
4... Insulating thin layer, 5... Sheet member, 6... Thermally expandable microcapsule, 6a... Outer shell, 6b...
...Inside.
Claims (1)
間に、低温熱膨張性の未発泡マイクロカプセルを
混入した高分子材料のペーストを充填した後、こ
のペーストの余剰分を除去して前記網目の凸部の
みをペースト内に露出せしめ、次いで未発泡のマ
イクロカプセルを加熱により発泡させ、しかる後
に高分子材料のペーストを熱硬化させたことを特
徴とするシート部材の製造方法。1 A paste of a polymeric material mixed with low-temperature thermally expandable unfoamed microcapsules is filled between the meshes of the mesh having at least an electrically conductive surface, and then the surplus of this paste is removed to form convexities in the meshes. 1. A method for producing a sheet member, characterized in that only a portion of the microcapsule is exposed in a paste, then unfoamed microcapsules are foamed by heating, and then a paste of a polymeric material is thermally cured.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58038176A JPS59164132A (en) | 1983-03-10 | 1983-03-10 | Manufacture of sheet member |
| US06/588,143 US4518648A (en) | 1983-03-10 | 1984-03-09 | Sheet material and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58038176A JPS59164132A (en) | 1983-03-10 | 1983-03-10 | Manufacture of sheet member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59164132A JPS59164132A (en) | 1984-09-17 |
| JPS6331373B2 true JPS6331373B2 (en) | 1988-06-23 |
Family
ID=12518075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58038176A Granted JPS59164132A (en) | 1983-03-10 | 1983-03-10 | Manufacture of sheet member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164132A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148133A (en) * | 1979-05-07 | 1980-11-18 | Otsuka Chem Co Ltd | Molded and foamed inorganic fibrous piece and manufacture thereof |
| JPS5631079A (en) * | 1979-08-22 | 1981-03-28 | Teijin Ltd | Leather like sturcture |
-
1983
- 1983-03-10 JP JP58038176A patent/JPS59164132A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148133A (en) * | 1979-05-07 | 1980-11-18 | Otsuka Chem Co Ltd | Molded and foamed inorganic fibrous piece and manufacture thereof |
| JPS5631079A (en) * | 1979-08-22 | 1981-03-28 | Teijin Ltd | Leather like sturcture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59164132A (en) | 1984-09-17 |
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