JPS62178313A - Manufacture of electrically-conductive molded article - Google Patents
Manufacture of electrically-conductive molded articleInfo
- Publication number
- JPS62178313A JPS62178313A JP2042686A JP2042686A JPS62178313A JP S62178313 A JPS62178313 A JP S62178313A JP 2042686 A JP2042686 A JP 2042686A JP 2042686 A JP2042686 A JP 2042686A JP S62178313 A JPS62178313 A JP S62178313A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- resin
- insulating
- electrically
- molded article
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 47
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000011231 conductive filler Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は表面が絶縁処理された導電性成形品の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a conductive molded article whose surface is subjected to insulation treatment.
（従来の技術）
近年、プラスチ、ツタが金属の代替として利用されるよ
うになったことに伴ない、プラスチックにも導電性が付
与されたものが要求されるようになった。そこで各種の
導電性フィラー、添加剤等を樹脂に混ぜた導電性材料を
用いて成形品を’ｌ造することが実用化されている。し
かし、これらの導電性成形品の中には、人間が手で触れ
たりするケースまたはハウジングとして利用されるもの
で、表面の絶縁性が要求されたり、あるいは意匠的観点
から一般プラスチックの持つ表面の平滑性が要求される
場合も多い。(Prior Art) In recent years, as plasti and ivy have come to be used as substitutes for metals, there has been a demand for plastics that are imparted with electrical conductivity. Therefore, it has been put into practical use to manufacture molded products using conductive materials in which various conductive fillers, additives, etc. are mixed with resin. However, some of these conductive molded products are used as cases or housings that are touched by humans, and therefore require surface insulation, or from a design standpoint, the surface characteristics of general plastics are not suitable. Smoothness is often required.
このような場合、従来は導電性成形品の表面にアクリル
系、エポキシ系、ウレタン系樹脂等の塗料を塗布して表
面を絶縁処理したり、あるいは表面の平滑性を要求され
る場合には下塗りしたり、成形品表面にシボをつけて、
ざらに塗装するなどして、導電性フィラーによる成形品
表面の肌荒れを目立たないようにしている。In such cases, conventionally, the surface of the conductive molded product is coated with paint such as acrylic, epoxy, or urethane resin to insulate the surface, or if a smooth surface is required, an undercoat is applied. or add texture to the surface of the molded product.
Rough coating on the surface of the molded product caused by the conductive filler is made less noticeable.
しかし、このような塗装による表面絶縁処理では、人間
が頻繁に手で触れる電話器、リモコンスイッチなどに使
用する場合には塗料がはがれたり、汚れがつきやすいな
ど不都合な点が多かった。However, this type of surface insulation treatment by painting has many disadvantages such as the paint peeling off and staining easily when used for telephones, remote control switches, etc. that are frequently touched by humans.
（発明が解決しようとする問題点）
本発明は以上のような従来の問題点を解決するためにな
されたもので、表面が絶縁性でかつ剥離しにくく、平滑
性に浸れた導電性成形品の製造方法を提供することを目
的とする。(Problems to be Solved by the Invention) The present invention has been made to solve the above-mentioned conventional problems. The purpose is to provide a manufacturing method for.
［発明の構成］
（問題を解決するための手段）
すなわち本発明の導電性成形品の製造方法は、表面が絶
縁処理された導電性成形品の製造方法において、絶縁性
樹脂シートを絶縁面形状に成形し、次いでこの絶縁性成
形品の一方の面に導電性樹脂を射出成形することを特徴
とする。[Structure of the Invention] (Means for Solving the Problems) That is, the method for manufacturing a conductive molded product of the present invention is a method for manufacturing a conductive molded product whose surface is insulated, in which an insulating resin sheet is formed into an insulating surface shape. It is characterized in that a conductive resin is injection molded onto one surface of the insulating molded product.
本発明において絶縁性樹脂シートの成形は例えばこのシ
ートを加熱後、空気の加圧または真空成形のような減圧
によって行なうのが好ましく、また成形は後に行なう導
電性樹脂の射出成形用の金型で絶縁性樹脂を成形し、し
かる後にこの金型を閉じて導電性樹脂を射出成形するこ
とか作業効率の点で好ましい。In the present invention, the insulating resin sheet is preferably formed by, for example, heating the sheet and then applying air pressure or reducing pressure such as vacuum forming, and the forming is performed using a mold for injection molding of the conductive resin that will be performed later. From the viewpoint of work efficiency, it is preferable to mold the insulating resin, then close the mold, and injection mold the conductive resin.
本発明で用いられる絶縁性樹脂および導電性樹脂の基材
は例えば塩化ビニル樹脂、ＡＢＳ樹脂、変性ポリフェニ
レンオキサイド（変性ポリフェニレンエーテル）等のよ
うな熱可塑性樹脂が好ましく、また絶縁性樹脂と導電性
樹脂の基材には同一の樹脂を使用することが両者の密着
性の点で好ましい。導電性樹脂にはこれらの基材となる
樹脂に、導電性フィラーとしてカーボンブラック、炭素
繊維、金属粉、金属繊維等と、必要に応じてその他の添
加物を加えて混練したものが用いられる。The base material of the insulating resin and conductive resin used in the present invention is preferably a thermoplastic resin such as vinyl chloride resin, ABS resin, modified polyphenylene oxide (modified polyphenylene ether), etc. It is preferable to use the same resin as the base material from the viewpoint of adhesion between the two. The conductive resin used is one obtained by kneading these base resins with conductive fillers such as carbon black, carbon fibers, metal powder, metal fibers, and other additives as necessary.
（作 用）
本発明によれば表面が絶縁性でかつ剥離しにくく、平滑
性に優れた導電性成形品を製造することができる。(Function) According to the present invention, it is possible to produce a conductive molded product whose surface is insulative, difficult to peel off, and has excellent smoothness.
（発明の実施例） 次に本発明を実施例によって説明する。(Example of the invention) Next, the present invention will be explained by examples.
第１図ないし第４図は本発明の一実施例を示す図でおる
。1 to 4 are diagrams showing one embodiment of the present invention.
まず第１図に示すように絶縁性の熱可塑性樹脂シート１
を１６０〜２２０’Ｃに加熱し、シート成形用型２で加
圧成形または真空成形をして第２図に示す絶縁性樹脂３
の成形品を得た。次いで第２図に示すようにこの絶縁性
樹脂成形品３を射出成形機４の射出成形金型コア５には
め込んだ後、第３図に示すように射出成形金型キャビ６
をとじ、射出シリンダ７より導電性樹脂８を射出、成形
した。First, as shown in Figure 1, an insulating thermoplastic resin sheet 1
The insulating resin 3 shown in FIG.
A molded product was obtained. Next, as shown in FIG. 2, this insulating resin molded product 3 is fitted into the injection mold core 5 of the injection molding machine 4, and then the injection mold cavity 6 is inserted as shown in FIG.
It was closed, and conductive resin 8 was injected from injection cylinder 7 to mold.
得られた導電性成形品９は第４図に示すように導電性樹
脂８の外側表面が絶縁性樹脂３で被覆されているので表
面が絶縁性でかつ平滑であり、意匠的外観に優れたもの
であった。また導電性樹脂８と絶縁性樹脂３との密着性
も優れていた。As shown in FIG. 4, the obtained conductive molded product 9 has an insulating and smooth surface because the outer surface of the conductive resin 8 is coated with the insulating resin 3, and has an excellent design appearance. It was something. Furthermore, the adhesion between the conductive resin 8 and the insulating resin 3 was also excellent.
第５図ないし６図は本発明の他の一実施例を示す図であ
る。5 and 6 are diagrams showing another embodiment of the present invention.
この方法において、シート成形１２０は第５図に示すよ
うに射出成形機４に装着されている。熱可塑性樹脂シー
ト１はシートロール１０に巻回された状態でセットされ
、この熱可塑性樹脂シート１の他端がかけわたされてい
るシートロール１１の回転により順次繰り出され、まず
加熱ヒータ１２によって加熱された後、射出成形機４の
金型コア５の位置に移動する。そして同時に加圧チャン
バー１３がエアシリンダ１４によって前記金型コア５の
位置に移動し、熱可塑性樹脂シート１は金型形状にシー
ト成形される。次に加圧チャンバー１３が戻り、代わり
に射出成形機４の金型キャビ６が閉じられて導電性樹脂
８が射出し、導電性成形品が得られる。このようにして
得られた成形品は金型を開いてシートロール１１を回転
させることにより取り出され、次の成形加工が開始され
る。In this method, the sheet molding 120 is mounted on an injection molding machine 4 as shown in FIG. The thermoplastic resin sheet 1 is set in a wound state around a sheet roll 10, and is sequentially unwound by the rotation of the sheet roll 11 around which the other end of the thermoplastic resin sheet 1 is wrapped.First, it is heated by a heating heater 12. After that, it is moved to the position of the mold core 5 of the injection molding machine 4. At the same time, the pressurized chamber 13 is moved to the position of the mold core 5 by the air cylinder 14, and the thermoplastic resin sheet 1 is sheet-molded into the shape of the mold. Next, the pressurized chamber 13 is returned, and the mold cavity 6 of the injection molding machine 4 is closed instead, the conductive resin 8 is injected, and a conductive molded product is obtained. The molded product thus obtained is taken out by opening the mold and rotating the sheet roll 11, and the next molding process is started.
［発明の効果］
以上説明したように本発明の導電性成形品の製造方法に
よれば、表面の絶縁被膜が平滑でかつ剥離しにくいもの
を１１ノることかできる。また絶縁性樹脂の成形を導電
性樹脂の射出成形用金型で行なうことにより製造工程が
簡略化され、生産性を高めることが可能である。[Effects of the Invention] As explained above, according to the method for manufacturing a conductive molded product of the present invention, it is possible to produce 11 products whose surface insulation coatings are smooth and difficult to peel off. Furthermore, by molding the insulating resin using a conductive resin injection mold, the manufacturing process can be simplified and productivity can be increased.
第１図ないし第４図は本発明の一実施例を示したもので
、第１図は絶縁性樹脂成形品の製造方法を示す断面図、
第２図はその絶縁性樹脂成形品を射出成形金型にはめ込
んだ状態を示す断面図、第３図は導電性樹脂を射出成形
している状態を示す断面図、第４図は得られた導電性成
形品の断面図であり、第５図および第６図は本発明の他
の一実施例を示したもので、第５図は絶縁性樹脂を射出
成形用金型で行なう場合の導電性成形品製造装置の概略
を示す説明図、第６図はその装置を用いた表面の絶縁性
樹脂の成形を概略的に示す説明図である。
１・・・・・・・・・・・・熱可塑性樹脂シート２・・
・・・・・・・・・・シート成形用型３・・・・・・・
・・・・・絶縁性樹脂４・・・・・・・・・・・・射出
成形機５・・・・・・・・・・・・射出成形金型コア６
・・・・・・・・・・・・射出成形金型キャビア・・・
・・・・・・・・・射出シリンダ８・・・・・・・・・
・・・導電性樹脂９・・・・・・・・・・・・導電性成
形品１０１１１・・・シートロール
１２・・・・・・・・・・・・加熱ヒータ１３・・・・
・・・・・・・・加圧チャンバー１４・・・・・・・・
・・・・エアシリンダ２０・・・・・・・・・・・・シ
ート成形機出願人 東芝ケミカル株式会社代
理人 弁理士 須 山 佐 −
第１図 第３図
第２図
第５図1 to 4 show an embodiment of the present invention, and FIG. 1 is a sectional view showing a method for manufacturing an insulating resin molded product;
Figure 2 is a cross-sectional view showing the insulating resin molded product fitted into the injection mold, Figure 3 is a cross-sectional view showing the conductive resin being injection molded, and Figure 4 is the result. FIGS. 5 and 6 are cross-sectional views of conductive molded products, and FIGS. 5 and 6 show other embodiments of the present invention. FIG. FIG. 6 is an explanatory diagram schematically showing the apparatus for manufacturing a plastic molded product, and FIG. 6 is an explanatory diagram schematically showing the molding of the insulating resin on the surface using the apparatus. 1......Thermoplastic resin sheet 2...
・・・・・・・・・Sheet molding mold 3・・・・・・・・・
...Insulating resin 4 ... Injection molding machine 5 ... Injection mold core 6
・・・・・・・・・・・・Injection mold caviar...
・・・・・・・・・Injection cylinder 8・・・・・・・・・
Conductive resin 9 Conductive molded product 10111 Sheet roll 12 Heater 13
...... Pressurized chamber 14...
... Air cylinder 20 ... Sheet forming machine Applicant Toshiba Chemical Co., Ltd. Agent Patent attorney Sasu Suyama - Figure 1 Figure 3 Figure 2 Figure 5
Claims (4)
おいて、絶縁性樹脂シートを絶縁面形状に成形し、次い
でこの絶縁性成形品の一方の面に導電性樹脂を射出成形
することを特徴とする導電性成形品の製造方法。(1) In a method for manufacturing a conductive molded product whose surface is insulated, an insulating resin sheet is molded into an insulating surface shape, and then a conductive resin is injection molded onto one surface of the insulating molded product. A method for producing a characteristic conductive molded product.
で行なわれる特許請求の範囲第１項記載の導電性成形品
の製造方法。(2) The method for manufacturing a conductive molded article according to claim 1, wherein the molding of the insulating resin is carried out using a conductive resin injection mold.
る特許請求の範囲第１項または第２項記載の導電性成形
品の製造方法。(3) The method for manufacturing a conductive molded article according to claim 1 or 2, wherein the insulating resin and the conductive resin are thermoplastic resins.
するものである特許請求の範囲第１項または第２項記載
の導電性成形品の製造方法。(4) The method for manufacturing a conductive molded article according to claim 1 or 2, wherein the insulating resin and the conductive resin are based on the same resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2042686A JPS62178313A (en) | 1986-01-31 | 1986-01-31 | Manufacture of electrically-conductive molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2042686A JPS62178313A (en) | 1986-01-31 | 1986-01-31 | Manufacture of electrically-conductive molded article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62178313A true JPS62178313A (en) | 1987-08-05 |
Family
ID=12026709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2042686A Pending JPS62178313A (en) | 1986-01-31 | 1986-01-31 | Manufacture of electrically-conductive molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62178313A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998600A (en) * | 1982-11-27 | 1984-06-06 | 大日本印刷株式会社 | Electromagnetic wave shielding cabinet |
| JPS59124824A (en) * | 1983-01-05 | 1984-07-19 | Toshiba Chem Corp | Manufacture of electromagnetic wave-shielding synthetic resin injection molding |
| JPS6013516A (en) * | 1983-07-04 | 1985-01-24 | Denki Kagaku Kogyo Kk | Manufacture of multilayer injection molded product with electromagnetic shielding property |
| JPS6114922A (en) * | 1984-06-30 | 1986-01-23 | Toyoda Gosei Co Ltd | Manufacture of mollded parts with skin and molding die thereof |
-
1986
- 1986-01-31 JP JP2042686A patent/JPS62178313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998600A (en) * | 1982-11-27 | 1984-06-06 | 大日本印刷株式会社 | Electromagnetic wave shielding cabinet |
| JPS59124824A (en) * | 1983-01-05 | 1984-07-19 | Toshiba Chem Corp | Manufacture of electromagnetic wave-shielding synthetic resin injection molding |
| JPS6013516A (en) * | 1983-07-04 | 1985-01-24 | Denki Kagaku Kogyo Kk | Manufacture of multilayer injection molded product with electromagnetic shielding property |
| JPS6114922A (en) * | 1984-06-30 | 1986-01-23 | Toyoda Gosei Co Ltd | Manufacture of mollded parts with skin and molding die thereof |
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