JPH05159627A - Conductive thermoplastic resin sheet for molding - Google Patents

Conductive thermoplastic resin sheet for molding

Info

Publication number
JPH05159627A
JPH05159627A JP3350248A JP35024891A JPH05159627A JP H05159627 A JPH05159627 A JP H05159627A JP 3350248 A JP3350248 A JP 3350248A JP 35024891 A JP35024891 A JP 35024891A JP H05159627 A JPH05159627 A JP H05159627A
Authority
JP
Japan
Prior art keywords
conductive
molding
resin sheet
thermoplastic resin
coating 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.)
Pending
Application number
JP3350248A
Other languages
Japanese (ja)
Inventor
Shigenobu Hiraiwa
重信 平岩
Kiyobumi Niijima
清文 新島
Ryuhei Tanaka
隆平 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Polymer Co Ltd
Priority to JP3350248A priority Critical patent/JPH05159627A/en
Publication of JPH05159627A publication Critical patent/JPH05159627A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To maintain the transparency excellent even at the time of molding, and obtain desired conductivity by providing a continued conductive coating surface and a non-coating surface evenly, and specifying a surface natural resistance value. CONSTITUTION:Screen printing is performed on a transparent hard vinyl chloride resin sheet with the conductive filling agent made of carbon black at 3.5weight%, the urethane resin as a binder at 14.5weight% and the conductive coating material having the nonvolatile component at 18weight% to form a conductive coating surface having the printed part showed with oblique lines. At this stage, multiple parts, where coating is not performed, shown with parts without oblique lines in the Figure are provided in the coating surface with intervals, and a surface natural resistance value as the whole is set within a range of 10<4>-10<7>OMEGA/square. Even in the case where the sheet is extended by the molding, since a degree of extension of the non-coating surface is larger than that of the coating surface, transparency is improved to restrict the lowering of the conductivity.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は成形用導電性熱可塑性樹
脂シート、特には成型を目的とする半透明で導電性能の
低下を抑えた成形用熱導電性熱可塑性樹脂シートに関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive thermoplastic resin sheet for molding, and more particularly to a semi-transparent thermoplastic resin sheet for molding which is intended for molding and suppresses deterioration of conductive performance.

【0002】[0002]

【従来の技術】塩化ビニル、ポリスチレン、ポリカーボ
ネートなどの熱可塑性樹脂シートを導電性にするために
は、このシートの全面にカーボン、ニッケル、銅、すず
−アンチモン系などの導電性塗料をコーティングするこ
とが一般的とされている。また、このものを透明性のも
のとするためには、ここに使用される導電性のフィラー
を可視光線の波長より小さい粒子にする必要がある。
2. Description of the Related Art In order to make a thermoplastic resin sheet such as vinyl chloride, polystyrene or polycarbonate conductive, it is necessary to coat the entire surface of the sheet with a conductive paint such as carbon, nickel, copper or tin-antimony. Is common. Further, in order to make this transparent, it is necessary that the conductive filler used here be particles smaller than the wavelength of visible light.

【0003】また、この透明性を得るためには不規則な
印刷パターンを数回印刷するという方法もあるが、これ
には全面コーティングした場合と同様に、成形後に均一
に伸びるために導電性が低下するという不利がある。な
お、この導電性付与については導電性カーボンや金属微
粉末などを熱可塑性樹脂に練り込むこともあり、この場
合には成形後に導電性の低下することは少ないけれど
も、これには成形物が不透明となり、内容物を判別する
ことができなくなるという不利がある。
In order to obtain this transparency, there is also a method of printing an irregular printing pattern several times. However, as in the case where the entire surface is coated, since it uniformly extends after molding, the conductivity is reduced. It has the disadvantage of decreasing. To impart conductivity, conductive carbon or fine metal powder may be kneaded into a thermoplastic resin. In this case, the conductivity is less likely to decrease after molding, but the molded product is opaque. Therefore, there is a disadvantage that the contents cannot be discriminated.

【0004】[0004]

【発明が解決しようとする課題】しかし、全面に均一に
導電性コーティングをした成形用熱可塑性樹脂シートは
成形時にほぼ均一に伸びるけれども、それが一定以上の
展開率を越えて成形されると成形前の表面抵抗の数値が
大きく低下するので、この低下を小さくするためには導
電性コート層を厚くする必要があるのであるが、これを
厚くすると透明性が低下するという不利が生ずる。ま
た、この透明性を上げるために使用する導電性フィラー
の粒子を小さくすると、成形によってシートが延伸され
たときに粒子同志の接触が切れる可能性が高いことから
導電性が低下するので、透明性と導電性を同時に満足す
るシートを得ることは難しいという問題点がある。
However, although a thermoplastic resin sheet for molding having a uniform conductive coating on its entire surface is stretched substantially uniformly during molding, it is molded when it exceeds a certain expansion rate. Since the numerical value of the surface resistance is greatly reduced, it is necessary to increase the thickness of the conductive coat layer in order to reduce the decrease. However, increasing the thickness of the conductive coat layer has a disadvantage of decreasing transparency. In addition, if the particles of the conductive filler used to increase the transparency are made small, the conductivity of the particles is likely to be cut off when the sheet is stretched by molding, and thus the conductivity is reduced. However, there is a problem that it is difficult to obtain a sheet that simultaneously satisfies the requirements for electrical conductivity.

【0005】[0005]

【課題を解決するための手段】本発明はこのような不利
を解決した成形用導電性熱可塑性樹脂シートに関するも
ので、これは連続した導電性コーティング面と非コーテ
ィング面とからなる熱可塑性樹脂シートからなり、表面
固有抵抗が 104〜107 Ω/口の範囲であることを特徴と
するものである。
SUMMARY OF THE INVENTION The present invention relates to a conductive thermoplastic resin sheet for molding which has solved such disadvantages, and it is a thermoplastic resin sheet having a continuous conductive coated surface and a non-coated surface. And has a surface resistivity in the range of 10 4 to 10 7 Ω / mouth.

【0006】すなわち、本発明者らは成形後に導電性、
透明性の低下するのを抑えることのできる導電性熱可塑
性樹脂シートを開発すべく種々検討した結果、これにつ
いては連続している導電性コーティング面と非コーティ
ング面とよりなるものとすると、これを成形したときの
印刷面と非印刷面とでその延伸率に差があるために導電
性コーティング面と非コーティング面との間に延伸率に
差が生じ、導電性コーティング面では延伸率が比較的小
さいので導電性の低下が小さくなり、非コーティング面
では比較的延伸率が大きいので透明性がむしろよくなる
ということを見出して本発明を完成させた。以下にこれ
をさらに詳述する。
That is, the present inventors have found that after molding, the conductivity,
As a result of various studies to develop a conductive thermoplastic resin sheet capable of suppressing a decrease in transparency, it is assumed that it is composed of a continuous conductive coated surface and a non-coated surface. Since there is a difference in the stretch ratio between the printed surface and the non-printed surface when molded, a difference in the stretch ratio occurs between the conductive coated surface and the non-coated surface, and the stretch ratio is relatively high on the conductive coated surface. The present invention has been completed by discovering that the reduction in conductivity is small because it is small, and that the transparency is rather good because the stretching ratio is relatively large on the non-coated surface. This will be described in more detail below.

【0007】[0007]

【作用】本発明は成形用導電性熱可塑性樹脂シートに関
するものであり、これは連続した導電性コーティング面
と非コーティング面とを均等に有する熱可塑性樹脂シー
トからなり、表面固有抵抗値が 104〜107 Ω/口の範囲
であることを特徴とするものであるが、これによれば成
形時における導電性の低下が少なく、透明性がより向上
した成形用導電性熱可塑性樹脂シートが得られる。
The present invention relates to a conductive thermoplastic resin sheet for molding, which comprises a thermoplastic resin sheet having a continuous conductive coated surface and a non-coated conductive surface uniformly, and has a surface specific resistance value of 10 4 It is characterized in that it is in the range of up to 10 7 Ω / port, which makes it possible to obtain a conductive thermoplastic resin sheet for molding with less deterioration in conductivity during molding and improved transparency. Be done.

【0008】本発明の成形用導電性熱可塑性樹脂シート
は熱可塑性樹脂シートに導電性コーティング面を施した
面と非コーティング面とよりなるものとされる。この熱
可塑性樹脂シートは塩化ビニル、ポリスチレン、ポリカ
ーボネート樹脂などのような透明性のよい樹脂に部分的
にカーボンブラック、ニッケル、銅、すず−アンチモン
などの導電性金属などの導電性物質を含有する塗料をオ
フセット印刷法、グラビア印刷法、シルクスクリーン印
刷法などで印刷した導電性コーティング面と非コーティ
ング面とからなるものとされる。
The conductive thermoplastic resin sheet for molding of the present invention comprises a thermoplastic resin sheet having a conductive coated surface and a non-coated surface. This thermoplastic resin sheet is a paint that partially contains a conductive material such as carbon black, nickel, copper, or tin-antimony in a highly transparent resin such as vinyl chloride, polystyrene, or polycarbonate resin. Is printed by an offset printing method, a gravure printing method, a silk screen printing method, or the like, and has a conductive coated surface and a non-coated surface.

【0009】この導電性コーティング面は導電性を確保
するためにすべて連結されたものとされ、非コーティン
グ面は一定の間隔で、あるいは不規則に点在させたもの
とすればよいが、この非コーティング面における開口率
は10%未満では光線透過率が10%未満となるし、全面コ
ーティングに限りなく近づいて成形時の延伸率の差が出
なくなるし、90%より大きいと印刷面が限りなく細い線
となって連続した線として印刷することが困難となり、
安定した導電性が得られない場合があるので、10〜90%
の範囲のものとすることがよい。
The conductive coated surfaces are all connected in order to ensure conductivity, and the non-coated surfaces may be scattered at regular intervals or irregularly. If the aperture ratio on the coated surface is less than 10%, the light transmittance will be less than 10%, and the stretch ratio during molding will not appear as close as possible to the full surface coating, and if it is greater than 90%, the printed surface will be infinite. It becomes a thin line and it becomes difficult to print as a continuous line,
10 to 90% because stable conductivity may not be obtained.
It is preferable that it is within the range.

【0010】また、この導電性コーティング面の印刷膜
厚は 0.5μm未満では導電性が低くなるし、厚みが少な
すぎて成形時の延伸率の差が現われ難しくなり、10.0μ
m より厚くすると印刷方法が限定されるばかりでなく、
コスト面でも高くなるので、0.5〜10.0μm の範囲とす
る必要がある。なお、この導電性コーティング層の成形
時の延伸率はここに使用するバインダーの種類によって
変えることができ、これをTgの高い熱可塑性樹脂とすれ
ば延伸率の小さいものとすることができるし、これを架
橋度合の高い熱硬化性樹脂とする場合も延伸率の小さい
ものとすることができる。
Further, if the printed film thickness of the conductive coating surface is less than 0.5 μm, the conductivity becomes low, and the thickness is too small, and it becomes difficult to show the difference in the stretching ratio at the time of molding.
If it is thicker than m, not only the printing method will be limited, but
The cost is also high, so it is necessary to set it in the range of 0.5 to 10.0 μm. Incidentally, the stretch ratio at the time of molding of this conductive coating layer can be changed by the kind of the binder used here, and if this is a thermoplastic resin having a high Tg, the stretch ratio can be made small, Even when this is a thermosetting resin having a high degree of cross-linking, the stretch ratio can be small.

【0011】本発明の成形用導電性熱可塑性樹脂シート
は前記したように導電性コーティング面と非コーティン
グ面とからなるものとされるが、このものは成形時に延
伸するとこの導電性コーティング面も非コーティング面
も延伸されるけれども、導電性コーティング面は透明シ
ートに導電性塗料が被覆されているので延伸率は小さ
く、非コーティング面はこの塗膜がないので延伸率はこ
の導電性コーティング面にくらべて大きいものとなり、
両者間で延伸率が相違したものとなる。
The conductive thermoplastic resin sheet for molding of the present invention is composed of a conductive coating surface and a non-coating surface as described above, but when this is stretched during molding, the conductive coating surface also becomes non-conductive. Although the coated surface is also stretched, the conductive coating surface has a small stretch ratio because the transparent sheet is coated with conductive paint, and the non-coated surface does not have this coating film, so the stretch ratio is higher than that of the conductive coated surface. Become big,
The stretching rate is different between the two.

【0012】したがって、これによれば延伸率の小さい
導電性コーティング面ではその導電性低下率が小さいも
のとなり、非コーティング面では延伸率が大きいのでそ
の透明性がむしろ大きくなるという有利性が与えられ
る。また、この導電性コーティング面と非コーティング
面との面積比は目的に応じて任意とすればよいが、これ
は一般的には略々均等なものとすることがよい。
Therefore, according to this, there is an advantage that the conductive coating surface having a small stretching rate has a small reduction rate of the conductivity, and the non-coating surface has a large stretching rate, so that the transparency is rather large. .. Further, the area ratio between the conductive coated surface and the non-coated surface may be arbitrarily set according to the purpose, but it is generally preferable that the area ratio is substantially equal.

【0013】なお、本発明の成形用導電性熱可塑性樹脂
シートは導電を目的とするものであることから、導電性
をもつものとされるが、この導電性は表面固有抵抗が 1
04Ω/口未満ではコーティングに限界があり、 107Ω/
口より大きいものは帯電防止性で透明なコーティングが
可能となるので 104〜107 Ω/口の範囲のものとするこ
とが必要とされる。
Since the conductive thermoplastic resin sheet for molding of the present invention is intended for conductivity, it is considered to have conductivity, but this conductivity has a surface resistivity of 1
Below 0 4 Ω / port, there is a limit to the coating, and 10 7 Ω /
Those larger than the mouth are required to have a range of 10 4 to 10 7 Ω / mouth because an antistatic property and a transparent coating are possible.

【0014】[0014]

【実施例】つぎに本発明の実施例をあげる。 実施例1、比較例1 厚さ 0.5mmの透明な硬質塩化ビニル樹脂シートに、導電
性充填剤としてのカーボンブラック 3.5重量%、バイン
ダーとしてのウレタン樹脂14.5重量%からなり、不揮発
分(N.V.)が18重量%である導電性塗料を用いてスクリ
ーン印刷して図1に示したような印刷を厚さ約4μm で
施し(図中の斜線部は印刷部分を示す)、80℃で30秒間
乾燥すると共に、比較のために上記の硬質塩化ビニル樹
脂シートの全面に上記した導電性塗料を厚さ約4μm に
塗装し、同一条件で乾燥した。
EXAMPLES Next, examples of the present invention will be given. Example 1 and Comparative Example 1 A transparent hard vinyl chloride resin sheet having a thickness of 0.5 mm was composed of 3.5% by weight of carbon black as a conductive filler and 14.5% by weight of a urethane resin as a binder, and had a nonvolatile content (NV). Screen print using 18 wt% conductive paint and print as shown in Fig. 1 to a thickness of about 4 μm (the shaded area in the figure indicates the printed part) and dry at 80 ° C for 30 seconds. At the same time, for comparison, the above-mentioned conductive paint was applied to the entire surface of the above-mentioned hard vinyl chloride resin sheet to a thickness of about 4 μm and dried under the same conditions.

【0015】ついで、この塗工膜の表面固有抵抗値を20
℃、65%RHの条件下で測定したところ、これは格子状の
印刷のものが4×104 Ω/口で、全面印刷のものが 3.5
×104 Ω/口であったので、これを真空成形で延伸して
図2のa)に示したような 205mm×140mm の容器状のもの
を作り、このものの図2のb)においてA、Bの位置にお
ける表面固有抵抗値を測定したところ、表1に示した結
果が得られ、さらに印刷面と非印刷面の延伸度合を確認
するためにシートの厚みおよび印刷面と非印刷面の伸び
を測定したところ、表2、表3に示したとおりの結果が
得られ、これより印刷面と非印刷面の成形による伸びの
差が導電性の低下を抑えることが確認された。
Next, the surface resistivity of this coating film was set to 20.
When measured under conditions of ℃ and 65% RH, this is 4 × 10 4 Ω / port for grid printing and 3.5 for full-screen printing.
Since it was × 10 4 Ω / mouth, this was stretched by vacuum forming to make a 205 mm × 140 mm container-like one as shown in a) of FIG. 2, and in A) of FIG. When the surface resistivity at the position B was measured, the results shown in Table 1 were obtained. Further, in order to confirm the stretching degree of the printed surface and the non-printed surface, the thickness of the sheet and the elongation of the printed surface and the non-printed surface were confirmed. As a result, the results shown in Tables 2 and 3 were obtained, and it was confirmed that the difference in elongation between the printed surface and the non-printed surface due to molding suppresses the decrease in conductivity.

【0016】[0016]

【表1】 [Table 1]

【表2】 [Table 2]

【表3】 [Table 3]

【0017】実施例2 実施例1で使用した硬質塩化ビニル樹脂シートに実施例
1で使用した導電性塗料を用いて図3に示したような印
刷を同じ印刷条件で印刷し(図中の斜線部分は印刷部分
を示す)、同条件で乾燥してこの塗工膜の表面固有抵抗
を測定したところ、これは4×104 Ω/口であり、この
ものを真空成形で延伸してこのもののA、Bの位置にお
ける表面固有抵抗を測定したところ、表4に示したとお
りの結果が得られたので、これによれば非印刷の形状が
4角形であっても、円形であっても同様な効果の得られ
ることが確認された。
Example 2 The hard vinyl chloride resin sheet used in Example 1 was printed with the conductive paint used in Example 1 under the same printing conditions as shown in FIG. 3 (shaded lines in the figure). The part is the printed part), and the surface resistivity of this coating film was measured after drying under the same conditions, and it was 4 × 10 4 Ω / port. The surface resistivity at the positions A and B was measured, and the results shown in Table 4 were obtained. Therefore, it is the same whether the non-printed shape is a square or a circle. It was confirmed that various effects can be obtained.

【0018】[0018]

【表4】 [Table 4]

【0019】[0019]

【発明の効果】本発明は成形用導電性熱可塑性樹脂シー
トに関するものであり、これは前記したように連続した
導電性コーティング面と非コーティング面とよりなる熱
可塑性樹脂シートからなる、表面固有抵抗が 104〜107
Ω/口の範囲であることを特徴とするものであるが、こ
れによれば成形によって延伸された場合でも延伸度が非
コーティング面の方が導電性コーティング面よりも大き
いために透明性がさらに向上するし、導電性も全面に塗
布した場合にくらべてその低下が低く抑えられるという
有利性が与えられる。
The present invention relates to a conductive thermoplastic resin sheet for molding, which comprises a thermoplastic resin sheet having a continuous conductive coated surface and a non-coated surface as described above. Is 10 4 to 10 7
It is characterized in that it is in the range of Ω / neck. According to this, even when stretched by molding, the degree of stretching is larger on the non-coated surface than on the electrically conductive coated surface, and therefore transparency is further improved. Further, the conductivity is improved, and the decrease in the conductivity is suppressed as compared with the case where the conductivity is applied to the entire surface.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例1における導電性熱可塑性樹脂
シートの印刷図の平面図を示したものである。
FIG. 1 shows a plan view of a printed diagram of a conductive thermoplastic resin sheet in Example 1 of the present invention.

【図2】a)は本発明の実施例1における導電性熱可塑性
樹脂シートの真空成形による延伸後の平面図、b)はその
縦断面図を示したものである。
2A is a plan view of a conductive thermoplastic resin sheet in Example 1 of the present invention after being stretched by vacuum forming, and FIG. 2B is a longitudinal sectional view thereof.

【図3】本発明の実施例2における導電性熱可塑性樹脂
シートの印刷面の平面図を示したものである。
FIG. 3 is a plan view of a printed surface of a conductive thermoplastic resin sheet according to Example 2 of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】連続した導電性コーティング面と非コーテ
ィング面とよりなる熱可塑性樹脂シートからなる、表面
固有抵抗値が 104〜107 Ω/口の範囲であることを特徴
とする成形用導電性熱可塑性樹脂シート。
1. A molding conductive material comprising a thermoplastic resin sheet having a continuous conductive coated surface and a non-coated surface and having a surface specific resistance value in the range of 10 4 to 10 7 Ω / port. Thermoplastic resin sheet.
JP3350248A 1991-12-09 1991-12-09 Conductive thermoplastic resin sheet for molding Pending JPH05159627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3350248A JPH05159627A (en) 1991-12-09 1991-12-09 Conductive thermoplastic resin sheet for molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3350248A JPH05159627A (en) 1991-12-09 1991-12-09 Conductive thermoplastic resin sheet for molding

Publications (1)

Publication Number Publication Date
JPH05159627A true JPH05159627A (en) 1993-06-25

Family

ID=18409222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3350248A Pending JPH05159627A (en) 1991-12-09 1991-12-09 Conductive thermoplastic resin sheet for molding

Country Status (1)

Country Link
JP (1) JPH05159627A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001332130A (en) * 2000-05-19 2001-11-30 Tdk Corp Functional film
SG87047A1 (en) * 1998-08-31 2002-03-19 Dainippon Ink & Chemicals Conductive sheet, process for producing the same, and molded article
JP2004511886A (en) * 2000-10-06 2004-04-15 ダイムラークライスラー・アクチェンゲゼルシャフト Device to protect the battery from electrostatic charging

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG87047A1 (en) * 1998-08-31 2002-03-19 Dainippon Ink & Chemicals Conductive sheet, process for producing the same, and molded article
JP2001332130A (en) * 2000-05-19 2001-11-30 Tdk Corp Functional film
JP2004511886A (en) * 2000-10-06 2004-04-15 ダイムラークライスラー・アクチェンゲゼルシャフト Device to protect the battery from electrostatic charging

Similar Documents

Publication Publication Date Title
CA1190735A (en) Flexible screen-printable conductive composition
EP0082477B1 (en) Flexible screen-printable conductive composition
US3215574A (en) Method of making thin flexible plasticsealed printed circuits
JP6598692B2 (en) Composition comprising silver nanowires
JPH05159627A (en) Conductive thermoplastic resin sheet for molding
JPH0195170A (en) Conductive paint
JP2002046393A (en) Polyester film for transferring
JP6958557B2 (en) Substrate with functional fine wire and method of forming functional fine wire
JP2016168809A (en) Conductive laminate
JP2595224Y2 (en) Carrier tape for storing electronic components
JPH0717197A (en) Antistatic transfer foil
JPH11353947A (en) Antistatic resin molding and secondary molding thereof
JPH0473809A (en) Transparent conductiv film
US5209962A (en) Thermal image transfer process using image receiving sheet
JPH0227799A (en) Conductive sheet
JP2889639B2 (en) Electrically insulating metal deposited film
CN207904178U (en) A kind of protection membrane structure avoiding bubble
JPS62114686A (en) Method for forming transparent conductive film
JPH0812785A (en) Conductive thermoplastic resin sheet
JPS595709B2 (en) Conductive flooring and its manufacturing method
CN209797834U (en) Scratch-proof touch film
JP3526743B2 (en) Conductive sheet
JPH08132567A (en) Electrically conductive multilayer sheet
JPH04345632A (en) Carrier tape, conductive coating material, and production of carrier tape
JP2001018592A (en) Transfer polyester film