JP2713338B2 - Syndiotactic polystyrene film - Google Patents
Syndiotactic polystyrene filmInfo
- Publication number
- JP2713338B2 JP2713338B2 JP4212702A JP21270292A JP2713338B2 JP 2713338 B2 JP2713338 B2 JP 2713338B2 JP 4212702 A JP4212702 A JP 4212702A JP 21270292 A JP21270292 A JP 21270292A JP 2713338 B2 JP2713338 B2 JP 2713338B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- poly
- roll
- less
- syndiotactic polystyrene
- 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 - Lifetime
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はシンジオタクチックポリ
スチレン系二軸延伸フィルム、さらに詳しく言えばフィ
ルム表面の平滑性に極めて優れ、且つフィルムの厚みに
関係なくハンドリング特性が良好であり、更にフィルム
表面の耐削れ特性が良好なシンジオタクチックポリスチ
レン系二軸延伸フィルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxially stretched syndiotactic polystyrene film, and more particularly, to an extremely excellent smoothness of the film surface and good handling characteristics irrespective of the film thickness. The present invention relates to a syndiotactic polystyrene-based biaxially stretched film having excellent abrasion resistance.
【０００２】[0002]
【従来の技術】シンジオタクチックポリスチレン系二軸
延伸フィルムは耐熱性、電気特性、透明性などに優れ、
磁気テープ用、写真・製版用、コンデンサー用、包装用
等、各種のフィルム用途に展開が期待されてる。これら
のフィルム用として用いられる場合、そのすべり性及び
耐摩耗性はフィルムの加工工程の作業性の良否、更には
その製品品質の良否を左右する大きな要因になってい
る。また、特に磁気テープ用途やコンデンサー用途に於
ては、高級化、小型化、薄膜化、高信頼化のために、フ
ィルム表面の超平滑化や超薄手化が要求されている。し
かしながら、シンジオタクチックポリスチレン系二軸延
伸フィルムにおいては、特に、単に表面を平滑にし、更
に薄手化したのでは、フィルムの製造時及び加工時のハ
ンドリング特性が不良になり、更にフィルムの走行時に
ガイドロールとの接触等による擦り傷や削れによるロー
ルへの白紛付着等の耐削れ性不良の問題が生じる。2. Description of the Related Art Syndiotactic polystyrene biaxially stretched films have excellent heat resistance, electrical properties, transparency, etc.
It is expected to be used in various film applications such as magnetic tapes, photographic / plate making, capacitors, and packaging. When used for these films, their slipperiness and abrasion resistance are major factors that affect the workability of the film processing step and the quality of the product. In particular, in magnetic tape applications and capacitor applications, ultra-smoothness and ultra-thin film surfaces are required for higher quality, smaller size, thinner film and higher reliability. However, in the case of a syndiotactic polystyrene-based biaxially stretched film, in particular, if the surface is simply smoothed and made thinner, the handling characteristics during the production and processing of the film become poor, and furthermore, the film is guided during running. There is a problem of poor abrasion resistance such as abrasion due to contact with the roll or white powder adhered to the roll due to abrasion.
【０００３】すべり性の良好なフィルムとして、無機粒
子を添加し、表面粗さRaが特定の範囲にあり、静摩擦係
数が限定されたものが知られている（特開平3-74437
号）。[0003] As a film having good slip properties, there is known a film in which inorganic particles are added, the surface roughness Ra is in a specific range, and the coefficient of static friction is limited (JP-A-3-74437).
issue).
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記従来のす
べり性良好なフィルムでは、低速作業時には良好なハン
ドリング特性が得られるが、作業が高速になるとハンド
リング特性が急激に悪化するという問題を発生すること
があった。またシンジオタクチックポリスチレン系二軸
延伸フィルムにおいては、特にフィルムの厚みが薄くな
るとハンドリング特性が悪化する傾向が大きく、上記の
無機粒子を添加し、表面粗さRaと静摩擦係数の範囲を規
定したフィルムにおいても同様の傾向を備えており、そ
のために良好なハンドリング特性が得られたとしても、
厚みが変わると所望のハンドリング特性が得られなくな
っていた。更に、シンジオタクチックポリスチレン系二
軸延伸フィルムは室温では脆いため、フィルムの製造時
及び加工時にロール等との摩擦によりフィルム表面に擦
り傷やロール上への白紛付着等の問題が発生しやすかっ
た。However, in the above-mentioned conventional film having good slipperiness, good handling characteristics can be obtained at a low speed operation, but there is a problem that the handling characteristics are rapidly deteriorated at a high speed operation. There was something. In the case of a syndiotactic polystyrene-based biaxially stretched film, the handling characteristics tend to deteriorate, especially when the thickness of the film is reduced, and the above-mentioned inorganic particles are added, and the surface roughness Ra and the range of the static friction coefficient are defined. Has the same tendency, and even if good handling characteristics are obtained,
If the thickness changes, desired handling characteristics cannot be obtained. Furthermore, since the syndiotactic polystyrene-based biaxially stretched film is brittle at room temperature, problems such as abrasion on the film surface and adhesion of white powder on the roll due to friction with the roll during production and processing of the film were likely to occur. .
【０００５】本発明は、フィルム表面の平滑性に極めて
優れ、且つフィルムの厚みに関係なくハンドリング特性
に優れ、更に走行時にロール等との摩擦に伴う擦り傷の
発生やロールへの白粉が生じないフィルム表面の耐削れ
特性の良好なシンジオタクチックポリスチレン系二軸延
伸フィルムを提供することを目的とする。[0005] The present invention provides a film which is extremely excellent in the smoothness of the film surface, excellent in handling properties irrespective of the thickness of the film, and which does not cause abrasion due to friction with a roll or the like during running and does not generate white powder on the roll. An object of the present invention is to provide a syndiotactic polystyrene-based biaxially stretched film having good surface abrasion resistance.
【０００６】[0006]
【課題を解決するための手段】本発明は、少なくとも片
面に１μ以上の突起が実質的になく、0.54μｍ未満0.27
μ以上の突起が 100個/mm2以上であり、三次元表面粗さ
SΔa が0.004 以上0.04以下、且つ空気抜け速さが 700
秒以下であることを特徴とする、フィルム表面の平滑性
に極めて優れ、且つフィルムの厚みに関係なくハンドリ
ング特性に優れ、更にフィルム表面の耐削れ特性が良好
なシンジオタクチックポリスチレン系二軸延伸フィルム
を提供するものである。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for manufacturing a semiconductor device, comprising:
100 μm / mm 2 or more protrusions with μ or more, 3D surface roughness
SΔa is 0.004 or more and 0.04 or less, and air bleed speed is 700
The film is extremely excellent in smoothness on the surface of the film, and has excellent handling characteristics irrespective of the thickness of the film, and has excellent abrasion resistance on the surface of the film. Is provided.
【０００７】本発明に用いられる立体規則性がシンジオ
タクチック構造であるポリスチレン系重合体は、側鎖で
あるフェニル基又は置換フェニル基が核磁気共鳴法によ
り定量されるタクテイシテイがダイアッド（構成単位が
二個）で85％以上、ペンタッド（構成単位が５個）で50
％以上のシンジオタクチック構造であることが望まし
い。In the polystyrene polymer having a stereoregular syndiotactic structure used in the present invention, the phenyl group or the substituted phenyl group, which is a side chain, is quantified by nuclear magnetic resonance. 85% or more for 2) and 50 for pentad (5 constituent units)
% Or more of the syndiotactic structure.
【０００８】該ポリスチレン系重合体としては、ポリス
チレン、ポリ（p-、m-又はo-メチルスチレン）、ポリ
（2,4-、2,5-、3,4-又は3,5-ジメチルスチレン）、ポリ
（p-ターシャリーブチルスチレン）などのポリ（アルキ
ルスチレン）、ポリ（p-、m-又はo-クロロスチレン）、
ポリ（p-、m-又はo-ブロモスチレン）、ポリ（p-、m-又
はo-フルオロスチレン）、ポリ（o-メチル-p- フルオロ
スチレン）などのポリ（ハロゲン化スチレン）、ポリ
（p-、m-又はo-クロロメチルスチレン）などのポリ（ハ
ロゲン置換アルキルスチレン）、ポリ（p-、m-又はo-メ
トキシスチレン）、ポリ（p-、m-又はo-エトキシスチレ
ン）などのポリ（アルコキシスチレン）、ポリ（p-、m-
又はo-カルボキシメチルスチレン）などのポリ（カルボ
キシアルキルスチレン）ポリ（p-ビニルベンジルプロピ
ル）などのポリ（アルキルエーテルスチレン）、ポリ
（p-トリメチルシリルスチレン）などのポリ（アルキル
シリルスチレン）、さらにはポリ（ビニルベンジルジメ
トキシホスファイド）などが挙げられる。As the polystyrene polymer, polystyrene, poly (p-, m- or o-methylstyrene), poly (2,4-, 2,5-, 3,4- or 3,5-dimethylstyrene) ), Poly (alkylstyrene) such as poly (p-tert-butylstyrene), poly (p-, m- or o-chlorostyrene),
Poly (halogenated styrene) such as poly (p-, m- or o-bromostyrene), poly (p-, m- or o-fluorostyrene), poly (o-methyl-p-fluorostyrene), poly ( Poly (halogen-substituted alkylstyrene) such as p-, m- or o-chloromethylstyrene, poly (p-, m- or o-methoxystyrene), poly (p-, m- or o-ethoxystyrene) Poly (alkoxystyrene), poly (p-, m-
Or o-carboxymethylstyrene) such as poly (carboxyalkylstyrene) poly (alkyletherstyrene) such as poly (p-vinylbenzylpropyl), poly (alkylsilylstyrene) such as poly (p-trimethylsilylstyrene), and furthermore Poly (vinylbenzyldimethoxyphosphide) and the like.
【０００９】本発明においては、前記ポリスチレン系重
合体のなかで、特にポリスチレンが好適である。また、
本発明で用いるシンジオタクチック構造を有するポリス
チレン系重合体は、必ずしも単一化合物である必要はな
く、シンジオタクティシティが前記範囲内であればアタ
クチック構造やアイソタクチック構造のポリスチレン系
重合体との混合物や、共重合体及びそれらの混合物でも
よい。In the present invention, among the polystyrene-based polymers, polystyrene is particularly preferred. Also,
The polystyrene-based polymer having a syndiotactic structure used in the present invention does not necessarily need to be a single compound. Or copolymers and mixtures thereof.
【００１０】また本発明に用いるポリスチレン系重合体
は、重量平均分子量が10,000以上、更に好ましくは50,0
00以上である。重量平均分子量が10,000未満のもので
は、強伸度特性や耐熱性に優れた二軸延伸フィルムを得
ることができない。重量平均分子量の上限については、
特に限定されるものではないが1500,000以上では延伸張
力の増大に伴う破断の発生等が生じるため、余り好まし
くない。The polystyrene polymer used in the present invention has a weight average molecular weight of 10,000 or more, more preferably 50,000 or more.
00 or more. If the weight average molecular weight is less than 10,000, a biaxially stretched film having excellent elongation characteristics and heat resistance cannot be obtained. For the upper limit of the weight average molecular weight,
Although it is not particularly limited, when the molecular weight is 1500,000 or more, breakage or the like occurs with an increase in the stretching tension, and thus it is not very preferable.
【００１１】更に、本発明のシンジオタクチックポリス
チレン系二軸延伸フィルムは、公知の方法、例えば、縦
延伸及び横延伸を順に行なう逐次二軸延伸方法のほか、
横・縦・縦延伸法、縦・横・縦延伸法、縦・縦・横延伸
法などの延伸方法を採用することができ、要求される強
度や寸法安定性などの諸特性に応じて選択される。な
お、必要に応じて、熱固定処理、縦弛緩処理、横弛緩処
理などを施してもよい。そして、前記の突起高さと突起
数の関係、三次元表面粗さ SΔa 、及び空気抜け速さ
は、フィルムの製膜条件及び滑剤粒子によって調整され
る。滑剤粒子の種類及び添加量は突起高さと突起数の関
係、三次元表面粗さ SΔa 、及び空気抜け速さが所定の
範囲内に入るならば特に限定されるものではないが、シ
リカ、二酸化チタン、タルク、カオリナイト等の金属酸
化物、炭酸カルシウム、リン酸カルシウム、硫酸バリウ
ムなどの金属の塩または有機ポリマーからなる粒子等の
シンジオタクチックポリスチレン系ポリマーに対し不活
性な粒子が例示される。そして、これらの滑剤は、いず
れか一種を単独で用いてもよく、また２種以上を併用し
てもよいが、使用する滑剤の平均粒子系は0.01μｍ以上
2.0 μｍ以下、特に0.05μｍ以上1.5 μｍ以下が好まし
く、粒子径のばらつき度（標準偏差と平均粒子径との比
率）が２５％以下が好ましく、添加量はシンジオタクチ
ックポリスチレン系ポリマー100 重量％に対し0.005 重
量％以上2.0 重量％以下含有することが好ましく、特に
0.1 重量％以上1.0 重量％以下が好ましい。また、滑剤
粒子の形状は、面積形状係数が60％以上のものが１種類
以上含まれていることが好ましい。この面積形状係数は
次式によって求められる。 面積形状係数＝（粒子の投影断面積／粒子に外接する円
の面積）× 100（％）Further, the syndiotactic polystyrene-based biaxially stretched film of the present invention can be prepared by a known method, for example, a sequential biaxial stretching method in which longitudinal stretching and transverse stretching are performed in order.
We can adopt stretching methods such as horizontal / vertical / longitudinal stretching method, vertical / horizontal / longitudinal stretching method, vertical / longitudinal / horizontal stretching method, and select according to various properties such as required strength and dimensional stability. Is done. In addition, you may perform a heat setting process, a vertical relaxation process, a horizontal relaxation process, etc. as needed. The relationship between the projection height and the number of projections, the three-dimensional surface roughness SΔa, and the air bleeding speed are adjusted by film forming conditions and lubricant particles. The type and amount of the lubricant particles are not particularly limited as long as the relationship between the projection height and the number of projections, the three-dimensional surface roughness SΔa, and the air bleeding speed are within predetermined ranges. Particles which are inert to syndiotactic polystyrene-based polymers such as metal oxides such as talc, kaolinite, etc., metal salts such as calcium carbonate, calcium phosphate and barium sulfate, or particles comprising organic polymers. Any one of these lubricants may be used alone, or two or more of them may be used in combination, but the average particle system of the lubricant used is 0.01 μm or more.
2.0 μm or less, particularly preferably 0.05 μm or more and 1.5 μm or less, the degree of variation in particle diameter (the ratio between the standard deviation and the average particle diameter) is preferably 25% or less, and the amount added is 100% by weight of the syndiotactic polystyrene-based polymer. On the other hand, the content is preferably not less than 0.005% by weight and not more than 2.0% by weight.
It is preferably from 0.1% by weight to 1.0% by weight. Further, the shape of the lubricant particles preferably includes one or more types having an area shape factor of 60% or more. This area shape factor is obtained by the following equation. Area shape factor = (projected cross-sectional area of particle / area of circle circumscribing the particle) x 100 (%)
【００１２】本発明に用いられるポリスチレン系重合体
には必要に応じて、公知の酸化防止剤、帯電防止剤など
を適量配合したものを用いることができる。配合量は、
ポリスチレン系重合体 100重量％に対して、10重量％以
下が望ましい。10重量％を越えると延伸時に破断が起こ
り易くなり、生産安定性が不良となる。本発明のシンジ
オタクチックポリスチレン系二軸延伸フィルムの少なく
とも片面の突起は、１μｍ以上のものが実質的になく、
0.54μｍ未満0.27μｍ以上のものが 100個/mm2以上必要
であり、また突起数の上限は5000個/mm2以下、好ましく
は3000個/mm2以下である。１μｍ以上の突起があるもし
くは0.54μｍ未満0.27μｍ以上の突起が5000個/mm2以上
あるとがあると走行時にフィルムからの脱落による擦り
傷や白粉が発生しやすくなり、耐削れ特性が不良とな
る。また、0.27μｍ以下の突起が 100個/mm2未満では平
滑な表面で且つ耐削れ特性及びハンドリング特性に優れ
たものが得られない。１μｍ未満0.54μｍ以上の突起に
ついては特に限定されないが、擦り傷や白粉の発生によ
る耐削れ特性を悪化させないためには、200 個/mm2以下
であることが望ましい。また、本発明のシンジオタクチ
ックポリスチレン系二軸延伸フィルムの少なくとも片面
の三次元表面粗さ SΔa は0.004 以上0.04以下であるこ
とが必要である。The polystyrene-based polymer used in the present invention may be, if necessary, a mixture of known antioxidants, antistatic agents and the like in appropriate amounts. The compounding amount is
It is preferably 10% by weight or less based on 100% by weight of the polystyrene-based polymer. If it exceeds 10% by weight, breakage tends to occur during stretching, and the production stability becomes poor. The projection on at least one surface of the syndiotactic polystyrene-based biaxially stretched film of the present invention is substantially free of 1 μm or more,
It is necessary that the number of protrusions is less than 0.54 μm and 0.27 μm or more, and 100 projections / mm 2 or more, and the upper limit of the number of projections is 5000 projections / mm 2 or less, preferably 3000 projections / mm 2 or less. If there are protrusions of 1 μm or more or protrusions of less than 0.54 μm and 0.27 μm or more are 5000 / mm 2 or more, abrasion or white powder due to falling off from the film during running tends to occur, resulting in poor abrasion resistance characteristics . On the other hand, if the number of protrusions of 0.27 μm or less is less than 100 / mm 2 , a surface having a smooth surface and excellent in abrasion resistance and handling characteristics cannot be obtained. The protrusions of less than 1 μm and 0.54 μm or more are not particularly limited, but are preferably 200 protrusions / mm 2 or less so as not to deteriorate the abrasion resistance due to generation of scratches and white powder. The three-dimensional surface roughness SΔa of at least one surface of the biaxially stretched syndiotactic polystyrene-based film of the present invention needs to be 0.004 or more and 0.04 or less.
【００１３】SΔa が0.004 未満ではハンドリング特性
が不良になり、 SΔa が0.04を越えると、例えば磁気テ
ープ用途では電磁変換特性が不良になり、写真、製版用
途では透明性が減少するため好ましくなく、フィルムコ
ンデンサー用途では耐電圧特性の低下が問題を生じる。
更に、本発明のシンジオタクチックポリスチレン系二軸
延伸フィルムの少なくとも片面の空気抜け速さは 700秒
以下である必要がある。即ち、空気抜け速さを 700秒以
下にすることにより、高速作業時においても、フィルム
の厚みや強度とは無関係にハンドリング特性が良好なシ
ンジオタクチックポリスチレン系二軸延伸フィルムが得
られる。反対に、空気抜け速さが 700秒を越えた場合、
高速作業時のハンドリング特性が不良となり、例えばフ
ィルムを高速でロール状に巻き取る場合にフィルムと巻
き取りロールの間に空気が取り込まれしわが生じやす
く、巻姿が不良になったり、フィルムが巻き込む空気層
の潤滑効果によってフィルムが幅方向に蛇行してロール
の端面の不揃いが生じたりする。When SΔa is less than 0.004, the handling characteristics are poor, and when SΔa exceeds 0.04, for example, electromagnetic conversion characteristics are poor in magnetic tape applications, and transparency is reduced in photographic and plate making applications. In capacitor applications, a problem arises in that the withstand voltage characteristics deteriorate.
Further, the air bleeding speed of at least one surface of the biaxially stretched syndiotactic polystyrene-based film of the present invention needs to be 700 seconds or less. In other words, by setting the air bleeding speed to 700 seconds or less, a syndiotactic polystyrene-based biaxially stretched film having good handling characteristics can be obtained irrespective of the thickness and strength of the film even during high-speed operation. Conversely, if the air bleed speed exceeds 700 seconds,
Poor handling characteristics during high-speed work.For example, when winding a film into a roll at high speed, air is taken in between the film and the take-up roll, and wrinkles are likely to occur, resulting in poor winding or film winding. The film may meander in the width direction due to the lubricating effect of the air layer, causing irregularities in the end faces of the roll.
【００１４】実施例 以下に実施例にて本発明を具体的に説明するが、本発明
はこれら実施例のみに限定されるものではない。なお、
フィルムの評価方法を以下に示す。 （１）三次元表面粗さ SΔa フィルム表面を触針式３次元表面粗さ計（SE-3AK, 株式
会社小坂研究所社製）を用いて、針の半径２μｍ、荷重
30mgの条件化に、フィルムの長手方向にカットオフ値0.
25mmで、測定長1mm にわたって測定し、２μm ピッチで
500 点に分割し、各点の高さを３次元粗さ解析装置（SP
A-11) に取り込ませた。これと同様の操作をフィルムの
幅方向について２μm 間隔で連続的に150 回、即ちフィ
ルムの幅方向0.3mm にわたって行ない、解析装置にデー
タを取り込ませた。次に、解析装置を用いて、 SΔa を
求めた。 （２）空気抜け速度 図１に示す測定装置を用意する。即ち、台盤１の上面に
円形の孔１a を設け、この孔1a内に直径70mmのガラス平
板２を固定してガラス平板２を固定してガラス平板２の
外周と孔壁１b との間に溝を形成し、更に上記の孔1bを
囲むリング状の溝孔1cを明け、この溝孔1cを上記ガラス
平板２の外周の溝と連通させ、溝孔1cにパイプ３を介し
て真空ポンプ４の吸引口を接続する。そして、台盤１の
上面に、ガラス平板２を覆う大きさのフィルム試料５を
重ね、その外周を粘着テープ６で台盤１状に密封状に固
定し、真空ポンプ４を駆動し、ガラス平板２の外周部に
干渉縞が出現してからガラス平板２の全面に干渉縞が広
がり、その動きが止るまでの時間（秒）を測定し、この
時間（秒）をもって空気抜け速さとする。 （３）フィルム表面の突起数 フィルム表面にアルミニウムを薄く均一に蒸着した後、
Nache 社製二光束干渉顕微鏡を用い、400 倍で1mm2の面
積を観察し、突起高さに対応する干渉縞をもつ突起数を
数える。EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. In addition,
The evaluation method of the film is shown below. (1) Three-dimensional surface roughness SΔa The film surface was measured using a stylus type three-dimensional surface roughness meter (SE-3AK, manufactured by Kosaka Laboratory Co., Ltd.) with a needle radius of 2 μm and a load.
A cut-off value of 0 in the longitudinal direction of the film with a condition of 30 mg.
Measured over a measurement length of 1 mm at 25 mm, at 2 μm pitch
It is divided into 500 points, and the height of each point is determined by a three-dimensional roughness analyzer (SP
A-11). The same operation was continuously performed 150 times in the width direction of the film at intervals of 2 μm, that is, over 0.3 mm in the width direction of the film, and the data was taken into the analyzer. Next, SΔa was determined using an analyzer. (2) Air bleeding speed A measuring device shown in FIG. 1 is prepared. That is, a circular hole 1a is provided on the upper surface of the base 1, and a glass plate 2 having a diameter of 70 mm is fixed in the hole 1a, and the glass plate 2 is fixed between the outer periphery of the glass plate 2 and the hole wall 1b. A groove is formed, and a ring-shaped groove 1c surrounding the hole 1b is formed. The groove 1c is communicated with a groove on the outer periphery of the glass plate 2, and a vacuum pump 4 is connected to the groove 1c via a pipe 3. Connect the suction port. Then, a film sample 5 having a size to cover the glass plate 2 is placed on the upper surface of the platen 1, and the outer periphery thereof is fixed in a sealed manner to the platen 1 with an adhesive tape 6, and the vacuum pump 4 is driven to drive the glass plate The time (seconds) from when the interference fringes appear on the outer peripheral portion of the glass plate 2 until the interference fringes spread over the entire surface of the glass plate 2 and the movement stops is measured, and this time (seconds) is defined as the air bleeding speed. (3) Number of protrusions on the film surface After thin and uniform deposition of aluminum on the film surface,
Using a two- beam interference microscope manufactured by Nache, observe an area of 1 mm 2 at 400 times magnification and count the number of projections having interference fringes corresponding to the projection height.
【００１５】（４）フィルムのハンドリング特性 広幅のスリットロールを高速でスリットし、小幅のロー
ルに巻直すに際しロール端部の巻ずれ、しわ、バルブ等
を生じないで問題のないロールが得られるかどうかを４
段階評価し、次のランク付けで評価した。 １級；問題のないスリットロールを得ることは極めて困
難 ２級；低速で問題のないスリットロールが得られる ３級；中速で問題のないスリットロールが得られる ４級；高速で問題のないスリットロールが得られる(4) Film Handling Characteristics When slitting a wide slit roll at a high speed and rewinding it into a small width roll, is it possible to obtain a roll that does not cause any problem such as unwinding at the roll end, wrinkles, and bulbs? Please 4
It was evaluated on a scale and evaluated according to the following ranking. 1st grade: It is extremely difficult to obtain a slit roll with no problem 2nd grade: A slit roll with no problem can be obtained at low speed 3rd grade: A slit roll with no problem can be obtained at medium speed 4th grade: A slit with high speed and no problem Get the roll
【００１６】（５）フィルムの耐削れ特性 フィルムを細幅にスリットし、金属製ガイドロールにこ
すり付けて走行するとき、一定の供給張力に対してガイ
ドロール擦過後の擦り傷の発生量及びロール上への白紛
発生量を５段階評価し、次のランク付けで表わした。擦
り傷と白紛による評価結果が異なるときは両者のうちの
悪いほうの結果を採用した。 １級；擦り傷多い、白紛非常に多い ２級；擦り傷かなり多い、白紛多い ３級；擦り傷ややあり、白紛発生ややあり ４級；擦り傷ほとんどなし、白紛発生ほぼなし ５級；擦り傷発生なし、白紛発生なし （６）平均粒子径 滑剤粒子を（株）日立製作所製S-５１０型走査型電子顕
微鏡で観察し、写真撮影したものを拡大して複写し、滑
剤の外形をトレースし任意に200 個の粒子を黒く塗りつ
ぶした。この像をニコレ（株）製ルーゼックス500 型画
像解析装置を用いて、それぞれの粒子の水平方向のフェ
レ径を測定し、その平均値を平均粒子径とした。また、
粒子径のばらつき度は下記の式により算出した。 ばらつき度＝（粒子径の標準偏差／平均粒子径）X 100
（％）(5) Abrasion resistance of the film When the film is slit into small widths and rubbed against a metal guide roll, the amount of scratches generated after the guide roll is rubbed against a constant supply tension and the amount of abrasion on the roll The amount of white powder generated was evaluated on a five-point scale and expressed by the following ranking. When the evaluation result by abrasion and white powder differed, the worse result of both was adopted. Grade 1; Scratches, white dust very much; Class 2: Scratches quite, white dust; Class 3; Scratches, slightly, white dust generated; Class 4; Little scratches, almost no white powder; Class 5; Scratched; None, no white powder generated (6) Average particle size The lubricant particles were observed with a Hitachi S-510 S-510 scanning electron microscope, a photograph was enlarged and copied, and the outer shape of the lubricant was traced. Arbitrarily, 200 particles were painted black. This image was measured for the horizontal Feret diameter of each particle using a Luzex 500 image analyzer manufactured by Nicole Co., Ltd., and the average value was defined as the average particle diameter. Also,
The degree of dispersion of the particle diameter was calculated by the following equation. Variation = (standard deviation of particle size / average particle size) x 100
(%)
【００１７】（７）面積形状係数 平均粒子径の測定に用いたトレース像から任意に２０個
の粒子を選び（６）で用いた画像解析装置を用いて、そ
れぞれの粒子の投影断面積を測定した。また、それらの
粒子に外接する円の面積を算出し、下記の式により算出
した。 面積形状係数＝（粒子の投影断面積／粒子に外接する円
の面積）× 100（％） 実施例 滑剤として、平均粒子径0.6 μｍ、ばらつき度25% 、面
積形状係数75% の炭酸カルシウムをシンジオタクチック
ポリスチレン（重量平均分子量300000）100 重量％に対
して3.0 重量％添加したポリマーチップと、滑剤の添加
されていないポリマーチップを重量比で１対９の割合で
混合した後、乾燥し、295 ℃で溶融し、200 μｍのリッ
プギャップのT ダイから押し出し、40℃の冷却ロールに
静電印荷法により密着・ 冷却固化し、70μｍの無定形シ
ートを得た。該無定形シートをまずロールにより95℃に
予熱し、表面温度800 ℃の赤外線加熱ヒーターを４本使
用し、更に加熱し、フィルム温度136 ℃で縦方向に3.5
倍延伸し、ついでテンターで、フィルムを120 ℃に予熱
し、横方向に延伸温度120 ℃で3.3 倍延伸し、260 ℃で
熱固定した。得られたフィルムの厚みは6 μｍであっ
た。(7) Area shape coefficient 20 arbitrary particles are selected from the trace image used for measuring the average particle diameter, and the projected cross-sectional area of each particle is measured using the image analyzer used in (6). did. Further, the area of a circle circumscribing the particles was calculated, and calculated by the following equation. Area shape coefficient = (projected cross-sectional area of particle / area of circle circumscribing the particle) × 100 (%) Example As a lubricant, calcium carbonate having an average particle diameter of 0.6 μm, a degree of variation of 25%, and an area shape coefficient of 75% was used as a syndrome. A polymer chip containing 3.0% by weight based on 100% by weight of tactic polystyrene (weight-average molecular weight of 300,000) and a polymer chip containing no lubricant were mixed at a weight ratio of 1: 9, and then dried. The mixture was melted at ℃, extruded from a T-die having a lip gap of 200 μm, adhered to a cooling roll at 40 ° C. by an electrostatic imprinting method, cooled and solidified to obtain a 70 μm amorphous sheet. The amorphous sheet was first preheated to 95 ° C. by a roll, and four infrared heaters having a surface temperature of 800 ° C. were used.
The film was preheated to 120 ° C by a tenter, stretched 3.3 times in the transverse direction at a stretching temperature of 120 ° C, and heat-set at 260 ° C. The thickness of the obtained film was 6 μm.
【００１８】比較例 滑剤粒子の炭酸カルシウムのばらつき度を４０％とした
以外は実施例と同様の操作を行なった。Comparative Example The same operation as in the example was performed except that the degree of dispersion of calcium carbonate in the lubricant particles was changed to 40%.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【発明の効果】以上、記載のとおり、本発明は前記特許
請求の範囲に記載のとおりの構成を採用することによ
り、フィルム表面の平滑性に極めて優れ、且つフィルム
の厚みに関係なくハンドリング特性に優れ、更にフィル
ム表面の耐削れ特性に優れたシンジオタクチックポリス
チレン系二軸延伸フィルムが提供され、従って、本発明
の工業的価値は大である。As described above, according to the present invention, by adopting the constitution described in the claims, the film surface is extremely excellent in smoothness, and the handling characteristics are improved regardless of the film thickness. The present invention provides a syndiotactic polystyrene-based biaxially stretched film which is excellent in the abrasion resistance of the film surface, and therefore has a great industrial value.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の空気抜け速さを測定するための装置
の断面図である。FIG. 1 is a sectional view of an apparatus for measuring an air bleed speed according to the present invention.
１：台盤 ２ ガラス平板 ３ 吸引パイプ ４ 真空ポンプ ５ フィルム試料 ６ 粘着テープ 1: Base plate 2 Glass plate 3 Suction pipe 4 Vacuum pump 5 Film sample 6 Adhesive tape
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 7:00 (56)参考文献 特開 平３−74437（ＪＰ，Ａ)──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location B29L 7:00 (56) References JP-A-3-74437 (JP, A)
Claims (1)
るスチレン系重合体から成り、少なくとも片面に１μ以
上の突起が実質的になく、0.54μｍ未満0.27μ以上の突
起が 100個/mm2以上5000個/mm2未満であり、三次元表面
粗さ SΔa が0.004 以上0.04以下であり、更に、空気抜
け速さが 700秒以下であることを特徴とするシンジオタ
クチックポリスチレンフィルム。1. A styrenic polymer substantially having a syndiotactic structure, wherein at least one side has substantially no protrusions of 1 μ or more, and 100 protrusions / mm 2 or more of less than 0.54 μm and 0.27 μ or more. Particles / mm 2 , a three-dimensional surface roughness SΔa of 0.004 or more and 0.04 or less, and an air bleeding speed of 700 seconds or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4212702A JP2713338B2 (en) | 1992-08-10 | 1992-08-10 | Syndiotactic polystyrene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4212702A JP2713338B2 (en) | 1992-08-10 | 1992-08-10 | Syndiotactic polystyrene film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0657016A JPH0657016A (en) | 1994-03-01 |
| JP2713338B2 true JP2713338B2 (en) | 1998-02-16 |
Family
ID=16627019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4212702A Expired - Lifetime JP2713338B2 (en) | 1992-08-10 | 1992-08-10 | Syndiotactic polystyrene film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2713338B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0691750A (en) * | 1992-09-11 | 1994-04-05 | Toyobo Co Ltd | Syndiotactic polystyrene biaxially drawn film |
| JPH0699485A (en) * | 1992-09-21 | 1994-04-12 | Toyobo Co Ltd | Syndiotactic polystyrenic biaxially stretched film |
| JPH06100711A (en) * | 1992-09-21 | 1994-04-12 | Toyobo Co Ltd | Syndiotactic polystyrenic biaxially oriented film |
| JPH06107813A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Biaxially oriented syndiotactic polystyrene film |
| JPH06106616A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Syndiotactic polystyrenr biaxially oriented film |
| JPH06107812A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Biaxially oriented syndiotactic polystyrene film |
| JPH0724911A (en) * | 1993-07-08 | 1995-01-27 | Toyobo Co Ltd | Syndyotactic polystyrene film |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101484797B1 (en) * | 2007-06-21 | 2015-01-20 | 데이진 가부시키가이샤 | Insulating film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2898018B2 (en) * | 1989-08-14 | 1999-05-31 | 出光興産株式会社 | Slippery film |
-
1992
- 1992-08-10 JP JP4212702A patent/JP2713338B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0691750A (en) * | 1992-09-11 | 1994-04-05 | Toyobo Co Ltd | Syndiotactic polystyrene biaxially drawn film |
| JPH0699485A (en) * | 1992-09-21 | 1994-04-12 | Toyobo Co Ltd | Syndiotactic polystyrenic biaxially stretched film |
| JPH06100711A (en) * | 1992-09-21 | 1994-04-12 | Toyobo Co Ltd | Syndiotactic polystyrenic biaxially oriented film |
| JPH06107813A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Biaxially oriented syndiotactic polystyrene film |
| JPH06106616A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Syndiotactic polystyrenr biaxially oriented film |
| JPH06107812A (en) * | 1992-09-28 | 1994-04-19 | Toyobo Co Ltd | Biaxially oriented syndiotactic polystyrene film |
| JPH0724911A (en) * | 1993-07-08 | 1995-01-27 | Toyobo Co Ltd | Syndyotactic polystyrene film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0657016A (en) | 1994-03-01 |
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