JPH0468035A - Method of surface treatment of biaxially oriented polypropylene film - Google Patents
Method of surface treatment of biaxially oriented polypropylene filmInfo
- Publication number
- JPH0468035A JPH0468035A JP18182890A JP18182890A JPH0468035A JP H0468035 A JPH0468035 A JP H0468035A JP 18182890 A JP18182890 A JP 18182890A JP 18182890 A JP18182890 A JP 18182890A JP H0468035 A JPH0468035 A JP H0468035A
- Authority
- JP
- Japan
- Prior art keywords
- film
- biaxially oriented
- corona discharge
- polypropylene film
- oriented polypropylene
- 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
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 17
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 17
- 238000004381 surface treatment Methods 0.000 title claims description 6
- -1 polypropylene Polymers 0.000 claims abstract description 32
- 239000004743 Polypropylene Substances 0.000 claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 claims abstract description 29
- 238000003851 corona treatment Methods 0.000 claims abstract description 18
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000005001 laminate film Substances 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 13
- 229920000298 Cellophane Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- AYKYXWQEBUNJCN-UHFFFAOYSA-N 3-methylfuran-2,5-dione Chemical compound CC1=CC(=O)OC1=O AYKYXWQEBUNJCN-UHFFFAOYSA-N 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Chemical group 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 1
- 229940018557 citraconic acid Drugs 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、二軸延伸ポリプロピレンフィルムの表面処理
方法に関し、さらに詳しくは、二軸延伸ポリプロピレン
フィルムの効果的なコロナ放電処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a method for surface treatment of biaxially oriented polypropylene films, and more particularly to an effective method for corona discharge treatment of biaxially oriented polypropylene films.
（ＩＩ）従来の技術
二軸延伸ポリプロピレンフィルムは、その優れた機械的
特性、化学的特性、透明性、水蒸気遮断性等を生かして
、包装用材料等として多く使用されている。そして、こ
のポリプロピレンフィルムの持つ印刷インキの付着性、
アルミニウム等金属の蒸着性等表面接着性の不良という
欠点に対しては、フィルム表面をコロナ放電処理するこ
とが広く行なわれている。(II) Prior Art Biaxially oriented polypropylene films are widely used as packaging materials due to their excellent mechanical properties, chemical properties, transparency, water vapor barrier properties, and the like. And, the adhesion of printing ink that this polypropylene film has,
To solve the problem of poor surface adhesion such as vapor deposition properties of metals such as aluminum, corona discharge treatment of the film surface is widely practiced.
しかしながら、二軸延伸ポリプロピレンフィルム表面へ
の単なるコロナ放電処理では市場の要求を充分に満足し
得る接着強度には到らず、特に、接着強度をより強固に
要求される場合であるとか、セロファン用インキ、水性
インキ等の汎用の印刷インキを使用する場合においては
、二軸延伸ポリプロピレンフィルムの表面に不飽和カル
ボン酸またはその無水物で変性された変性ポリプロピレ
ンからなる層を積層し、その変性ポリプロピレン層をコ
ロナ放電処理することによる接着性改良方法が提案され
（例えば、特開昭５３−３０６７８号、同５７〜１４７
５２８号、同５８−１５２３号、同５Ｂ−１７１２３号
各公報等）、一部実用化されているものの、接着性に関
して依然として実用上の問題を残しており、さらには、
透明性の不良化、フィルム同士のブロンキングの発生等
の問題を引き起こしているのが現状である。However, mere corona discharge treatment on the surface of a biaxially oriented polypropylene film does not achieve adhesive strength that fully satisfies market demands. When using a general-purpose printing ink such as ink or water-based ink, a layer made of modified polypropylene modified with an unsaturated carboxylic acid or its anhydride is laminated on the surface of a biaxially oriented polypropylene film, and the modified polypropylene layer is A method of improving adhesion by corona discharge treatment has been proposed (for example, Japanese Patent Application Laid-Open Nos. 53-30678 and 57-147).
No. 528, No. 58-1523, No. 5B-17123, etc.), although some of them have been put into practical use, there still remain practical problems regarding adhesion.
The current situation is that it causes problems such as poor transparency and the occurrence of bronzing between films.
また、コロナ放電処理を窒素ガス等の不活性ガス雰囲気
下で行なうことによる接着性改良方法も数多く紹介され
ているが、これとて接着性不良という問題を解決しきっ
ているものではない。Furthermore, many methods for improving adhesion by performing corona discharge treatment in an inert gas atmosphere such as nitrogen gas have been introduced, but these methods do not completely solve the problem of poor adhesion.
（ハ）発明が解決しようとする課題
本発明は、二軸延伸ポリプロピレンフィルムにおける前
述の現状に鑑みてなされたものであり、印刷インキ、特
にセロファン用インキ、水性インキ等、の付着性、アル
ミニウム等金属の蒸着性等の表面接着性の優れた二軸延
伸ポリプロピレンフィルムの表面処理方法を提供するこ
とを目的とする。(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned current situation regarding biaxially oriented polypropylene films, and it addresses problems such as the adhesion of printing inks, particularly cellophane inks, water-based inks, etc., aluminum etc. The object of the present invention is to provide a method for surface treatment of a biaxially oriented polypropylene film having excellent surface adhesion properties such as metal vapor deposition properties.
（ニ）課題を解決するための手段
本発明の二軸延伸ポリプロピレンフィルムの表面処理方
法は、以下詳述すれば、二軸延伸ポリプロピレンフィル
ムの表面をコロナ放電処理するにおいて、前記二軸延伸
ポリプロピレンフィルムの表面に不飽和カルボン酸また
はその無水物で変性された変性ポリプロピレンフィルム
からなり、少なくとも一軸方向に延伸され、かつ平均厚
みが０．２μ以上２．０μ未満の変性ポリプロピレン層
を設けた積層フィルムの該変性ポリプロピレン層表面を
、積層フィルムの温度を９５゛Ｃ以上とすると共に処理
雰囲気温度を６０″Ｃ未満として、コロナ放電処理する
ことを特徴とする。(d) Means for Solving the Problems The method for surface treatment of a biaxially oriented polypropylene film of the present invention will be described in detail below. A laminated film comprising a modified polypropylene layer modified with an unsaturated carboxylic acid or its anhydride, stretched in at least one axis, and having an average thickness of 0.2μ or more and less than 2.0μ on the surface of the laminated film. The surface of the modified polypropylene layer is characterized by corona discharge treatment at a temperature of the laminated film of 95°C or higher and a treatment atmosphere temperature of less than 60°C.
本発明における二軸延伸ポリプロピレンフィルムとは、
プロピレンの単独重合体、プロピレンとエチレン、ブテ
ン−１、ヘキセン−１，４−メチルペンテン−１等のα
−オレフィンとの共重合体、およびこれらの混合物等を
、公知の方法により、押出成形し、逐次または同時に二
軸延伸して製造したフィルムであって、その厚みは、通
常１０〜１００μ程度のものである。The biaxially stretched polypropylene film in the present invention is
α of propylene homopolymer, propylene and ethylene, butene-1, hexene-1,4-methylpentene-1, etc.
- A film produced by extrusion molding a copolymer with olefin, a mixture thereof, etc. by a known method and biaxially stretching the film sequentially or simultaneously, and the thickness thereof is usually about 10 to 100 μm. It is.
また、本発明で用いる変性ポリプロピレンとは、前述の
二軸延伸ポリプロピレンフィルムにおけると同様のポリ
プロピレンに、アクリル酸、メタクリル酸、マレイン酸
、無水マレイン酸、シトラコン酸、無水シトラコン酸、
イタコン酸、無水イタコン酸等、好ましくは無水マレイ
ン酸等の不飽和カルボン酸またはその無水物をグラフト
反応する等して変性することによって得られ、不飽和カ
ルボン酸またはその無水物単位の含有量が好ましくは０
．０１〜３重量％、特に好ましくは０．０３〜１重量％
のものである。In addition, the modified polypropylene used in the present invention refers to the same polypropylene as in the biaxially oriented polypropylene film described above, acrylic acid, methacrylic acid, maleic acid, maleic anhydride, citraconic acid, citraconic anhydride,
It is obtained by modifying an unsaturated carboxylic acid such as itaconic acid, itaconic anhydride, preferably maleic anhydride, or its anhydride through a graft reaction, and the content of unsaturated carboxylic acid or its anhydride units is Preferably 0
．． 01-3% by weight, particularly preferably 0.03-1% by weight
belongs to.
また、前記二軸延伸ポリプロピレンフィルムの表面に少
なくとも一軸方向に延伸された前記変性ポリプロピレン
層を設けた積層フィルムを製造するには、前記ポリプロ
ピレンと前記変性ポリプロピレンとを共押出成形して積
層シートとした後、逐次または同時二軸延伸する方法、
前記ポリプロピレンを押出成形してシートとし、その表
面に前記変性ポリプロピレンを押出ラミネートして積層
した後、逐次または同時二軸延伸する方法、前記ポリプ
ロピレンを押出成形してシートとし、−軸方向に延伸し
た後、その表面に前記変性ポリプロピレンを押出ラミネ
ートして積層し、次いで前の延伸方向と直角の方向に延
伸する方法等、公知の方法を採ることができる。In order to produce a laminated film in which the modified polypropylene layer stretched in at least one direction is provided on the surface of the biaxially stretched polypropylene film, the polypropylene and the modified polypropylene are coextruded to form a laminated sheet. After that, sequential or simultaneous biaxial stretching method;
A method of extrusion molding the polypropylene to form a sheet, extrusion laminating the modified polypropylene on the surface thereof, and then sequentially or simultaneous biaxial stretching; Thereafter, a known method can be used, such as extrusion laminating the modified polypropylene on the surface and then stretching in a direction perpendicular to the previous stretching direction.
本発明においては、前記積層フィルムにおける変性ポリ
プロピレン層の平均厚みを０．２μ以上２．０μ未満と
することが必須であり、０．３μ以上１、８μ以下とす
ることが好ましい。ここで、平均厚みが０．２μ未満、
および２．０μ以上では、後述するコロナ放電処理によ
り得られる二軸延伸ポリプロピレンフィルムの表面接着
性における充分な改良効果が得られないこととなり、さ
らに、２．０μ以上の場合は、フィルム同士のブロッキ
ングの問題が発生する。In the present invention, it is essential that the average thickness of the modified polypropylene layer in the laminated film is 0.2 μm or more and less than 2.0 μm, and preferably 0.3 μm or more and 1.8 μm or less. Here, the average thickness is less than 0.2μ,
If it is 2.0μ or more, sufficient improvement effect on the surface adhesion of biaxially oriented polypropylene film obtained by the corona discharge treatment described below will not be obtained.Furthermore, if it is 2.0μ or more, blocking between the films will occur. problem occurs.
さらに、本発明においては、前記積層フィルムの変性ポ
リプロピレン層表面をコロナ放電処理するにおいて、積
層フィルムの温度を９５℃以上、好ましくは１００〜１
３０℃とすると共に、処理雰囲気温度を６０℃未満、好
ましくは３０〜５５℃とすることが必須である。ここで
、積層フィルムの温度が９５℃未満、および、処理雰囲
気温度が６０℃以上では、得られる二軸延伸フィルムの
表面接着性における充分な改良効果が得られないことと
なる。Furthermore, in the present invention, when the surface of the modified polypropylene layer of the laminated film is subjected to corona discharge treatment, the temperature of the laminated film is set to 95°C or higher, preferably 100°C to 100°C.
It is essential that the temperature is 30°C and the treatment atmosphere temperature is less than 60°C, preferably 30 to 55°C. Here, if the temperature of the laminated film is less than 95°C and the processing atmosphere temperature is 60°C or more, a sufficient improvement effect on the surface adhesion of the resulting biaxially stretched film will not be obtained.
コロナ放電処理は、真空管方式、サイリスター方式等の
公知のコロナ放電処理装置を用い、通常用いられている
処理条件、例えば、放電電極と被処理フィルムとの間隔
０．５〜１０鵬、処理量３０〜３００Ｗ・分／ボの範囲
にて実施する。The corona discharge treatment is carried out using a known corona discharge treatment apparatus such as a vacuum tube method or a thyristor method, under commonly used treatment conditions, such as a distance of 0.5 to 10 mm between the discharge electrode and the film to be treated, and a throughput of 30 mm. It is carried out in the range of ~300W・min/bo.
なお、本発明におけるコロナ放電処理のガス雰囲気とし
ては、空気でもよく、窒素ガス、炭酸ガス、その地下活
性ガス等で置換したものとしてもよいが、中で窒素ガス
雰囲気下とすることが最も良好な結果を与える。Note that the gas atmosphere for the corona discharge treatment in the present invention may be air, or may be replaced with nitrogen gas, carbon dioxide gas, underground active gas thereof, etc., but a nitrogen gas atmosphere is most preferable. gives a good result.
また、本発明において、処理雰囲気の温度を６０℃未満
に保つためには、放電処理バーから被処理フィルムが通
る処理ロールまでをフード等で被うことが効率的である
。また、被処理フィルムに同伴される高温の空気の処理
雰囲気への流入を避けて処理雰囲気の安定化を計るため
に、雰囲気ガスを連続的に処理雰囲気に導入することが
好ましい。さらに、処理雰囲気を低湿度として、例えば
、露点がＯ″ＣＣ以下る湿度とするのが好ましい。Further, in the present invention, in order to maintain the temperature of the processing atmosphere at less than 60° C., it is efficient to cover the area from the discharge processing bar to the processing roll through which the film to be processed passes with a hood or the like. Furthermore, in order to stabilize the processing atmosphere by avoiding high-temperature air accompanying the film to be processed from flowing into the processing atmosphere, it is preferable to continuously introduce atmospheric gas into the processing atmosphere. Further, it is preferable to set the processing atmosphere at a low humidity, for example, at a humidity such that the dew point is O''CC or less.
（本）発明の効果
本発明の二軸延伸ポリプロピレンフィルムの表面処理方
法は、セロファン用インキ、水性インキ等印刷インキの
付着性、アルミニウム等金属の蒸着性等の表面接着性の
優れた二軸延伸ポリプロピレンフィルムが得られるとい
う工業的に極めて意義の大きい効果を奏するものである
。(Present) Effects of the Invention The surface treatment method of the biaxially stretched polypropylene film of the present invention is a method for biaxially stretched polypropylene film that has excellent surface adhesion properties such as adhesion of printing inks such as cellophane inks and water-based inks, and vapor deposition properties of metals such as aluminum. This produces an industrially extremely significant effect in that a polypropylene film can be obtained.
（へ）実施例
実施例１
ポリプロピレン（三菱油化社製、三菱ノーブレンＦＬ６
ＣＫ、メルトインデックス２．３ｇ／１０分）と、無水
マレイン酸で変性した変性ポリプロピレン（無水マレイ
ン酸単位含有量０．１重量％、メルトインデックス４．
０ｇ／１０分）とを用いて、常法に従って、共押出成形
して積層シートとした後、縮方向に５倍延伸し、次いで
横方向に１０倍延伸して、前者厚み２０μ、後者厚み１
．５μの二軸延伸ポリプロピレン積層フィルムを製造し
た。(f) Examples Example 1 Polypropylene (manufactured by Mitsubishi Yuka Co., Ltd., Mitsubishi Noblen FL6
CK, melt index 2.3 g/10 min) and modified polypropylene modified with maleic anhydride (maleic anhydride unit content 0.1% by weight, melt index 4.
0 g/10 minutes) according to a conventional method to form a laminated sheet, which was then stretched 5 times in the contraction direction, and then 10 times in the transverse direction, so that the former had a thickness of 20μ and the latter had a thickness of 1.
．． A 5μ biaxially oriented polypropylene laminate film was produced.
このフィルムを加熱ロールにて１１０℃に予熱した後、
変性ポリプロピレン層表面を、５０℃の雰囲気温度、露
点５℃の雰囲気湿度下にて、５０Ｗ・分／ボの処理量で
コロナ放電処理した。なお、処理装置は、処理雰囲気を
フードで被い、該フード内へ空気を２００ ｆ／分の量
で連続的に供給できるものを用いた。After preheating this film to 110°C with a heating roll,
The surface of the modified polypropylene layer was subjected to corona discharge treatment at an ambient temperature of 50° C. and an atmospheric humidity with a dew point of 5° C. at a treatment rate of 50 W·min/bo. The processing apparatus used was one that could cover the processing atmosphere with a hood and continuously supply air into the hood at a rate of 200 f/min.
コロナ放電処理したフィルムに、市販のセロファン用イ
ンキ（東洋インキ製造社製、セロカラーＣＣ３Ｔ６２
）を塗布し、乾燥後のインキの接着状態を、市販のセロ
ファンテープを貼着面に気泡が入らないように貼り付け
、これを急激に剥離した時のインキの剥離面積比（％）
で評価し、結果を表１に示した。A commercially available cellophane ink (Cellocolor CC3T62 manufactured by Toyo Ink Mfg. Co., Ltd.) was applied to the corona discharge-treated film.
) was applied, and the adhesion state of the ink after drying was measured by applying a commercially available cellophane tape to the adhesive surface to avoid air bubbles, and then rapidly peeling it off.The ratio of the ink peeling area (%)
The results are shown in Table 1.
実施例２〜４、比較例１〜４
変性ポリプロピレン層厚み、並びに、コロナ放電処理時
のフィルム温度、雰囲気温度、および雰囲気湿度を表１
に示す通りに変更した他は、実施例１と同様にして、積
層フィルムを製造し、コロナ放電処理し、評価した。Examples 2 to 4, Comparative Examples 1 to 4 Modified polypropylene layer thickness, film temperature, ambient temperature, and ambient humidity during corona discharge treatment are shown in Table 1.
A laminated film was manufactured in the same manner as in Example 1, except for the changes shown in , and was subjected to corona discharge treatment and evaluated.
Claims (1)
処理するにおいて、前記二軸延伸ポリプロピレンフィル
ムの表面に不飽和カルボン酸またはその無水物で変性さ
れた変性ポリプロピレンからなり、少なくとも一軸方向
に延伸され、かつ平均厚みが０．２μ以上２．０μ未満
の変性ポリプロピレン層を設けた積層フィルムの該変性
ポリプロピレン層表面を、積層フィルムの温度を９５℃
以上とすると共に処理雰囲気温度を６０℃未満として、
コロナ放電処理することを特徴とする二軸延伸ポリプロ
ピレンフィルムの表面処理方法。In subjecting the surface of a biaxially oriented polypropylene film to a corona discharge treatment, the surface of the biaxially oriented polypropylene film is made of modified polypropylene modified with an unsaturated carboxylic acid or its anhydride, stretched in at least one direction, and having an average thickness of The surface of the modified polypropylene layer of a laminated film provided with a modified polypropylene layer having a diameter of 0.2μ or more and less than 2.0μ is heated to 95°C.
or more, and the processing atmosphere temperature is less than 60°C,
A method for surface treatment of biaxially oriented polypropylene film, characterized by subjecting it to corona discharge treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18182890A JPH0468035A (en) | 1990-07-10 | 1990-07-10 | Method of surface treatment of biaxially oriented polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18182890A JPH0468035A (en) | 1990-07-10 | 1990-07-10 | Method of surface treatment of biaxially oriented polypropylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0468035A true JPH0468035A (en) | 1992-03-03 |
Family
ID=16107530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18182890A Pending JPH0468035A (en) | 1990-07-10 | 1990-07-10 | Method of surface treatment of biaxially oriented polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0468035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008505245A (en) * | 2004-07-01 | 2008-02-21 | スリーエム イノベイティブ プロパティズ カンパニー | Atmospheric pressure nitrogen dielectric-methods, systems, and polymeric materials related to consideration of H2O levels present in barrier discharge |
-
1990
- 1990-07-10 JP JP18182890A patent/JPH0468035A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008505245A (en) * | 2004-07-01 | 2008-02-21 | スリーエム イノベイティブ プロパティズ カンパニー | Atmospheric pressure nitrogen dielectric-methods, systems, and polymeric materials related to consideration of H2O levels present in barrier discharge |
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