JP2600722B2 - Polypropylene film - Google Patents
Polypropylene filmInfo
- Publication number
- JP2600722B2 JP2600722B2 JP28010387A JP28010387A JP2600722B2 JP 2600722 B2 JP2600722 B2 JP 2600722B2 JP 28010387 A JP28010387 A JP 28010387A JP 28010387 A JP28010387 A JP 28010387A JP 2600722 B2 JP2600722 B2 JP 2600722B2
- Authority
- JP
- Japan
- Prior art keywords
- corona discharge
- polypropylene film
- width
- treatment
- present
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ポリプロピレンフィルムに関する。The present invention relates to a polypropylene film.
ポリプロピレンフィルムは、その優れた性質から、コ
ンデンサをはじめ、工業用途に広く用いられている。Polypropylene films are widely used in industrial applications, including capacitors, due to their excellent properties.
その使用量の増大に伴い、最近はあらゆる加工工程に
おいて高速化が進められている。With an increase in the amount of use, recently, speeding up has been promoted in all processing steps.
しかし、一方高速化に伴い、巻取りなどにおける蛇
行、ズレ、しわなどが発生し易くなっており、生産性向
上の阻害要因となっている。However, meanwhile, meandering, misalignment, wrinkles, and the like during winding and the like are more likely to occur with the increase in speed, which is a hindrance to improving productivity.
そこで、ポリプロピレンフィルムにも高速加工性が要
求され、巻取り性、走行性などが重要な品質になってい
る。Therefore, high-speed workability is also required for the polypropylene film, and winding and running properties are important qualities.
従来は、該要求に対して、特開昭58−16415号公報に
開示されている如く、金属蒸着を施す用途において、非
蒸着面に、濡れ張力33dyne/cm以下の表面処理を施し、
高速巻取り性を付与する方法などが知られている。Conventionally, in response to the demand, as disclosed in JP-A-58-16415, in applications where metal deposition is performed, the non-deposited surface is subjected to a surface treatment with a wet tension of 33 dyne / cm or less,
A method of giving high-speed winding property and the like are known.
しかし、該従来技術では、400m/分以上の高速走行、
高速巻取りでは、巻ズレが発生するなど不充分である。However, in the prior art, high-speed traveling of 400 m / min or more,
High-speed winding is insufficient, such as occurrence of winding deviation.
また、これを防ぐあめ、33dyne/cmを越える表面処理
を施すと、特開昭58−16415号公報にもあるように、シ
ワが発生する、ブロッキングを起すなどの限界があっ
た。Further, if a surface treatment of more than 33 dyne / cm is performed to prevent this, there are limits such as generation of wrinkles and blocking as described in JP-A-58-16415.
本発明は、かかる問題点を改善し、400m/分以上の高
速走行下でも、巻ズレ、シワ、ブロッキング共に発生し
ないポリプロピレンフィルムを得るため、鋭意検討の結
果、ある処理強度で且つ縦スジ状の処理、即ち幅方向の
処理強度が不均一なものの方が、400m/分以上の高速走
行でも巻ズレを起さないことを発見した。もちろん400m
/分未満でも、何ら支障はない。The present invention improves such problems, even under high-speed running of 400 m / min or more, to obtain a polypropylene film that does not generate both winding displacement, wrinkles, and blocking.As a result of intensive studies, it has a certain processing strength and a vertical streak shape. It was found that the one having non-uniform treatment, that is, the treatment intensity in the width direction did not cause the winding displacement even at a high speed running of 400 m / min or more. Of course 400m
There is no problem even if it is less than / minute.
本発明はポリプロピレンフィルムの少なくとも片面に
５〜30mm幅のコロナ放電処理部と５〜50mm幅の非処理部
が交互に位置する縦スジ状コロナ放電処理が施され、且
つ金属蒸着後の非蒸着面の静電気の絶対値の最大値が10
〜100Vで、且つ該静電気の最大値と最小値の差が20〜10
0Vであることを特徴とするポリプロピレンフィルムであ
る。In the present invention, at least one side of the polypropylene film is subjected to a vertical stripe-shaped corona discharge treatment in which a corona discharge treatment part having a width of 5 to 30 mm and a non-treatment part having a width of 5 to 50 mm are alternately arranged, and a non-deposition surface after metal deposition. The maximum absolute value of static electricity is 10
~ 100V, and the difference between the maximum value and the minimum value of the static electricity is 20 ~ 10V
It is a polypropylene film characterized by being at 0V.
すなわち、本発明のポリプロピレンフィルムは、特定
のコロナ放電処理を施したポリプロピレンフィルムであ
る。That is, the polypropylene film of the present invention is a polypropylene film subjected to a specific corona discharge treatment.
コロナ放電処理前のポリプロピレンフィルムは、特に
限定するものではないが、例えば、押出機温度18〜290
℃で、IIが95.0％以上のポリプロピレンホモポリマーを
溶融して、幅500mm、間隙1mmのＴダイより、シート状に
押出し、20〜95℃に冷却されたチルロールで冷却固化さ
せた後、100〜155℃の温度で長さ方向に４〜７倍に延伸
し、次いで幅方向に140〜165℃の温度で８〜12倍に延伸
し、その後145〜165℃の温度で熱処理して得られたもの
を使用できる。The polypropylene film before corona discharge treatment is not particularly limited, for example, extruder temperature 18 to 290
At 200C, a polypropylene homopolymer having II of 95.0% or more was melted, extruded into a sheet shape from a T-die having a width of 500 mm and a gap of 1 mm, and cooled and solidified with a chill roll cooled to 20 to 95C. Stretched 4 to 7 times in the length direction at a temperature of 155 ° C, then stretched 8 to 12 times in a width direction at a temperature of 140 to 165 ° C, and then heat-treated at a temperature of 145 to 165 ° C. Anything can be used.
本発明において、縦スジ状コロナ放電処理の縦スジの
幅は、コロナ放電処理部が5mm未満では、巻ズレ防止の
効果がなく、30mmを越えると50mm以下程度の狭幅フィル
ムには、従来技術と同等の効果しか得られない。好まし
くは７〜20mmである。In the present invention, the width of the vertical stripes in the vertical stripe-shaped corona discharge treatment is less than 5 mm in the corona discharge treatment portion, there is no effect of preventing winding deviation, and if it exceeds 30 mm, a narrow film of about 50 mm or less has a conventional technology. Only the same effect can be obtained. Preferably it is 7 to 20 mm.
また、非処理部が5mm未満では、従来技術と差がな
く、50mmを越えると、5mm以下のフィルムでは、全面非
処理と同等になり、効果がなくなる。好ましくは10mm以
上30mm以下である。When the unprocessed portion is less than 5 mm, there is no difference from the conventional technology. When the unprocessed portion exceeds 50 mm, the film having a thickness of 5 mm or less is equivalent to the entire non-processed film, and the effect is lost. Preferably it is 10 mm or more and 30 mm or less.
尚、この縦方向処理スジは幅方向に定位置である必要
はなく、単独にあるいは全体に移動してもさしつかえな
く、結果として交錯しても問題ない。The vertical processing stripes do not need to be at fixed positions in the width direction, and may be moved alone or in their entirety.
また、幅を上述の範囲であれば、変動してもかまわな
い。Further, the width may be varied as long as the width is in the above range.
コロナ放電処理部の処理強度は、反対面に金属蒸着を
施した後、非蒸着面の静電気の絶対値の最大値により判
定する。この絶対値の最大値が10V未満では、全面非処
理と有意差がなく、100Vを越えると、シワやブロッキン
グの発生を招く。好ましくは、15V以上70V以下である。The treatment intensity of the corona discharge treatment unit is determined by the maximum value of the absolute value of static electricity on the non-deposited surface after metal deposition on the opposite surface. If the maximum value of the absolute value is less than 10 V, there is no significant difference from the whole non-treatment, and if it exceeds 100 V, wrinkles and blocking occur. Preferably, it is 15 V or more and 70 V or less.
また、コロナ放電処理部と非処理部の処理強度の差
は、反対側に金属蒸着を施した後、非蒸着面の静電気の
最大値と最小値の差により判定する。この最大値と最小
値の差が20V未満では、全面非処理と同等となって、ズ
レが発生しやすくなり、100Vを越えると、シワが発生し
やすく、ブロッキングにも不利である。好ましくは、30
V以上80V以下である。Further, the difference in the treatment strength between the corona discharge treated portion and the non-treated portion is determined by the difference between the maximum value and the minimum value of the static electricity on the non-deposited surface after metal deposition on the opposite side. If the difference between the maximum value and the minimum value is less than 20 V, it is equivalent to non-processing on the entire surface, and a shift is likely to occur. If it exceeds 100 V, wrinkles are likely to occur, which is disadvantageous for blocking. Preferably, 30
It is V or more and 80 V or less.
なお、金属蒸着を目的とした通常表面処理でも、非処
理面に、本発明に似た縦スジ状の処理がなされる場合が
ある。いわゆる裏漏れであるが、この場合には、処理お
よび非処理の幅、処理強度などをコントロールすること
が困難であり、本発明が、これらをコントロールし得る
点と、全く異なる。但し、該裏漏れを上述の範囲でコン
トロール出来れば、それは、本発明そのものである。な
ぜならば、本発明の目的を果すためには、処理方法の如
何を問わないからである。In addition, even in the normal surface treatment for the purpose of metal deposition, a vertical stripe-like treatment similar to the present invention may be performed on the non-treated surface. Although it is a so-called back leakage, in this case, it is difficult to control the width of processing and non-processing, the processing intensity, and the like, which is completely different from the point that the present invention can control these. However, if the back leakage can be controlled within the above range, it is the present invention itself. This is because the processing method does not matter regardless of the purpose of the present invention.
また、本発明中のコロナ放電処理部、非処理部は、各
々強処理部、弱処理部であってもかまわない。Further, the corona discharge processing section and the non-processing section in the present invention may be a strong processing section and a weak processing section, respectively.
なお、コロナ放電処理の雰囲気ガスは、特に限定する
ものではなく、空気でよく、また一酸化炭素その他のガ
スでもよい。The atmosphere gas for the corona discharge treatment is not particularly limited, and may be air, carbon monoxide, or another gas.
また、本発明を、金属蒸着用ポリプロピレンフィルム
に利用する場合は、金属蒸着を目的とした濡れ張力35〜
46dyne/cmとなる通常のコロナ放電処理を施した面の、
反対面に、本発明の縦スジ状コロナ放電処理を施すのが
よい。Further, when the present invention is applied to a polypropylene film for metal vapor deposition, a wet tension of 35 to
46dyne / cm normal corona discharge treated surface
The opposite surface is preferably subjected to the vertical stripe corona discharge treatment of the present invention.
また、本発明のポリプロピレンフィルムの幅は、少な
くとも10mm以上必要であり、好ましくは300mm以上であ
る。The width of the polypropylene film of the present invention needs to be at least 10 mm or more, and preferably 300 mm or more.
本発明の特性値の測定法および効果の評価法は次の通
りである。The method for measuring characteristic values and the method for evaluating effects according to the present invention are as follows.
（１）静電気 ａ）非スジ状処理面全幅にアルミニウムを10〜50nmの厚
みに蒸着する。(1) Static electricity a) Aluminum is deposited to a thickness of 10 to 50 nm over the entire width of the non-streak-like processed surface.
ｂ）アースされた銅板の上に、ａ）で得た蒸着フィルム
を蒸着面が銅板に接するように置く。b) Place the vapor-deposited film obtained in a) on a grounded copper plate such that the vapor-deposited surface is in contact with the copper plate.
ｃ）フィルム面の垂線上5mmの距離にセンサーが位置す
るように、表面電位計をセットし、横方向にスキャンさ
せ、その表面電位を測定する。なお、表面電位計はKAWA
GUCHI ELECTRIC製 SURFACE POTENTIAL METER SSV
II−40を使用した。c) Set a surface voltmeter so that the sensor is located at a distance of 5 mm above the perpendicular to the film surface, scan in the horizontal direction, and measure the surface potential. The surface potentiometer is KAWA
GUCHI ELECTRIC SURFACE POTENTIAL METER SSV
II-40 was used.
（２）巻ズレ、シワ、ブロッキング 西村製作所製 蒸着フィルムスリッターにてスリット
し、巻ズレ、シワ、巻出し部ブロッキングを観察判定し
た。(2) Winding deviation, wrinkles, blocking Slitting was performed with a vapor deposition film slitter manufactured by Nishimura Seisakusho, and the winding deviation, wrinkles, and unwinding part blocking were observed and determined.
次に、本発明を実施例により説明する。 Next, the present invention will be described with reference to examples.
実施例１〜３、比較例１、２ 片面に金属蒸着を目的とした通常表面処理（濡れ張力
が41dyne/cmとなるようなコロナ放電処理）を施した厚
さ８μｍ、幅525mm、長さ3000mの二軸延伸ポリプロピレ
ンフィルムの非通常処理面に、コロナ放電処理部が15mm
幅、非処理部が20mm幅で、処理強度を変更した５種のフ
ィルムを作成した。Examples 1 to 3 and Comparative Examples 1 and 2 One side was subjected to a normal surface treatment (corona discharge treatment so that the wetting tension becomes 41 dyne / cm) for the purpose of metal deposition. The thickness was 8 μm, the width was 525 mm, and the length was 3000 m. Corona discharge treated part is 15mm on the unusually treated surface of biaxially stretched polypropylene film of
Five types of films having a width and a non-processed portion of 20 mm in width and different processing intensities were prepared.
該フィルムの通常処理面に、真空蒸着機で速度250m/
分、張力5kgにて、アルミニウムを30nm蒸着した。On the normal processing surface of the film, a speed of 250 m /
At a tension of 5 kg for 30 minutes, 30 nm of aluminum was deposited.
さらに、該蒸着フィルムを、スリッターで速度150〜4
50m/分にて、80mm幅６本にスリットした。両端各々22.5
mmは、耳クズ化した。Further, the vapor-deposited film is slitted at a speed of 150 to 4
At 50 m / min, it was slit into six 80 mm widths. 22.5 at each end
mm ears.
結果を第１表に示す。 The results are shown in Table 1.
実施例４ コロナ放電処理部、非処理部共5mm幅とした以外は、
実施例１と同様した。Example 4 Except that the corona discharge treatment part and the non-treatment part were 5 mm wide,
As in Example 1.
実施例５ コロナ放電処理部を30mm幅、非処理部を50mm幅とした
以外は、実施例１と同様とした。Example 5 Example 5 was the same as Example 1 except that the corona discharge treatment portion was 30 mm wide and the non-treatment portion was 50 mm width.
比較例３ コロナ放電処理部を5mm幅、非処理部を70mm幅とした
以外は、実施例１と同様とした。Comparative Example 3 The same operation as in Example 1 was performed except that the corona discharge treated portion was 5 mm wide and the non-treated portion was 70 mm wide.
比較例４ コロナ放電処理部を50mm幅、非処理部を50mm幅とした
以外は、実施例１と同様とした。Comparative Example 4 Example 1 was the same as Example 1 except that the corona discharge treated portion was 50 mm wide and the non-treated portion was 50 mm wide.
比較例５ コロナ放電処理部、非処理部共100mm幅とした以外
は、実施例１と同様とした。Comparative Example 5 The same operation as in Example 1 was performed except that the corona discharge-treated portion and the non-treated portion were 100 mm wide.
比較例６ 非通常処理面を処理しない以外は、実施例１と同様と
した。Comparative Example 6 The same operation as in Example 1 was performed except that the non-normal processing surface was not processed.
比較例７ 非通常処理面を33dyne/cmに全面均一処理した以外
は、実施例１と同様とした。Comparative Example 7 The same operation as in Example 1 was performed except that the non-normal processing surface was uniformly processed to 33 dyne / cm.
〔発明の効果〕 本発明によって、400m/分の高速走行、高速巻取りで
も、 （１）巻ズレを起さない。 [Effects of the Invention] According to the present invention, even at a high speed of 400 m / min and a high speed winding, (1) no displacement occurs.
（２）シワが発生しない。(2) No wrinkles occur.
（３）ブロッキングを起さない。(3) No blocking occurs.
という要件を全て満足するポリプロピレンフィルムを得
ることができた。A polypropylene film satisfying all of the requirements was obtained.
Claims (1)
に、５〜30mm幅のコロナ放電処理部と５〜50mm幅の非処
理部が交互に位置する縦スジ状コロナ放電処理が施さ
れ、且つ金属蒸着後の非蒸着面の静電気の絶対値の最大
値が10〜100Vで、且つ該静電気の最大値と最小値の差が
20〜100Vであることを特徴とするポリプロピレンフィル
ム。At least one surface of a polypropylene film is subjected to a vertical stripe corona discharge treatment in which corona discharge treatment portions having a width of 5 to 30 mm and non-treatment portions having a width of 5 to 50 mm are alternately provided, and after metal deposition. The maximum value of the absolute value of the static electricity on the non-evaporated surface is 10 to 100 V, and the difference between the maximum value and the minimum value of the static electricity is
A polypropylene film having a voltage of 20 to 100 V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28010387A JP2600722B2 (en) | 1987-11-05 | 1987-11-05 | Polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28010387A JP2600722B2 (en) | 1987-11-05 | 1987-11-05 | Polypropylene film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01121332A JPH01121332A (en) | 1989-05-15 |
| JP2600722B2 true JP2600722B2 (en) | 1997-04-16 |
Family
ID=17620360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28010387A Expired - Fee Related JP2600722B2 (en) | 1987-11-05 | 1987-11-05 | Polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2600722B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1060867B1 (en) * | 1999-06-17 | 2003-01-02 | Toray Industries, Inc. | Plastic film |
| JP5241983B2 (en) * | 2000-09-29 | 2013-07-17 | 東レ株式会社 | Film roll body and method for producing film roll body |
| JP5041879B2 (en) * | 2007-05-31 | 2012-10-03 | ユニチカ株式会社 | Polyamide film and method for producing the same |
-
1987
- 1987-11-05 JP JP28010387A patent/JP2600722B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01121332A (en) | 1989-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |