JPS62248618A - Manufacture of thermoplastic polymer sheet - Google Patents
Manufacture of thermoplastic polymer sheetInfo
- Publication number
- JPS62248618A JPS62248618A JP61091999A JP9199986A JPS62248618A JP S62248618 A JPS62248618 A JP S62248618A JP 61091999 A JP61091999 A JP 61091999A JP 9199986 A JP9199986 A JP 9199986A JP S62248618 A JPS62248618 A JP S62248618A
- Authority
- JP
- Japan
- Prior art keywords
- cooling member
- mobile cooling
- cooling body
- slit
- plate electrode
- 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 13
- 229920001169 thermoplastic Polymers 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 abstract 2
- 101710123186 Slit homolog 1 protein Proteins 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- KNUQMCFQGBKYPW-UHFFFAOYSA-N holamide Natural products O=C1C=CC2(C)C3CCC45CN(C(=O)NC)C(C)C5CCC4C3CCC2=C1 KNUQMCFQGBKYPW-UHFFFAOYSA-N 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/9165—Electrostatic pinning
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は熱可摺性重合体シートの製造方法に関し、＊に
鈴しく【エロ金から押出した熱可塑性重合体のシート状
烙融物１！ｉ’に、静電荷の作用を利用して、移動冷却
体にしっかりと接触させて冷却固化する熱可塑性重合体
シートの製造方法に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a method for producing a thermoplastic polymer sheet. The present invention relates to a method for producing a thermoplastic polymer sheet, which is cooled and solidified by firmly contacting a moving cooling body by utilizing the action of electrostatic charge.
従来技術
熱ｏｌｌ注性重合体らシートを製造する方法は、通常、
該重合体を熔融連続流として押出し口金を通してシート
状に押出し％次いでこれをドラムのような移動冷却体と
接触させて冷却固化することＫよりなされる。しかし、
この方法にはい（つかの１大な問題点かある。その一つ
は。Prior Art The method for producing sheets from hot-rolling polymers usually involves the following steps:
The polymer is extruded as a continuous molten stream through an extrusion die into a sheet, and then brought into contact with a moving cooling body such as a drum to cool and solidify. but,
Yes, there is one major problem with this method, one of which is.
口金と移動冷却体の間で、ＪＲは移動冷却体上でシート
状熔融物流の幅が着しく諷少する傾向にあり、シート幅
が不規則になることである１、他の問題点は、シート状
重合体流かＷ１１＠体流と移動冷却体表ｔｈＩｇ）間に
９気を捕捉することにより生じる冷却斑の現象である°
。多くの場合、シート状熔融物流の線速度より速いＩ！
！而速面で移動冷却体の表面は５ＩＩｈするので、これ
らの問題点は更に助長される。Between the nozzle and the moving cooling body, JR has a tendency for the width of the sheet-like melt flow to become narrow on the moving cooling body, making the sheet width irregular1.Other problems are as follows: This is a phenomenon of cooling spots caused by the trapping of air between the sheet-like polymer flow (W11@body flow and the moving cooling body surface thIg).
. In many cases, I! is faster than the linear velocity of the sheet melt flow.
! Since the surface of the moving cooling body has a speed of 5IIh, these problems are further aggravated.
これらの問題を牌決する方法として、押出されたシート
状熔融物流の表面上に帝″ＲＬＫよる静電荷を析出させ
、該シート状熔融物流を移動冷却体表面にしっかりと＆
ｊ着させる方法は公知である・。この方法にも各種の方
法が従来から知られている。例えは、＋１１熱可シ性連
台体のシート状熔融物が移動冷却体に接する近傍で月つ
該熔融物の移動冷却体に接しない餞の面上にワイヤ電極
を設け、この電極と移動冷却体との間に直流電圧を印加
する方法（特公昭３７−ｔｉ１４２号）。As a method to solve these problems, an electrostatic charge is deposited on the surface of the extruded sheet-like molten stream by Teijin RLK, and the sheet-like molten stream is firmly attached to the surface of the moving cooling body.
The method of attaching the material is well known. Various methods have been known for this method. For example, a wire electrode is provided on the surface of the melt near where the sheet-like melt of the +11 thermoplastic series is in contact with the movable cooling body, but not in contact with the movable cooling body for the melt, and the wire electrode is moved with this electrode. A method of applying a DC voltage between the cooling body (Japanese Patent Publication No. 37-ti142).
（２）口金を電極とし、該口金と移動冷却体との間に直
ａ電圧を印加する方法（特開昭５〇−６９１６６号）
、ｆ３＋移動冷却体の表面に電気絶縁皮膜を設け、−万
シート状５８融物が接する的の皮膜の向上Ｋｍ極を設け
、この電極と移動冷却体との間に直流電圧を印加する方
法（％公昭４８−１４７８４号） 、 ＋４１上記も方
法においてシート状熔融物の移動冷却体との接触点近傍
を。(2) A method in which the cap is used as an electrode and a direct voltage is applied between the cap and the moving cooling body (Japanese Patent Laid-Open No. 50-69166)
, A method of providing an electrically insulating film on the surface of the f3+ moving cooling body, providing a Km electrode for improving the film in contact with the -10,000-sheet-like 58 melt, and applying a DC voltage between this electrode and the moving cooling body ( % Publication No. 48-14784), +41 In the above method, the area near the point of contact of the sheet-shaped melt with the moving cooling body.
９気より電気絶縁性の商いガスの雰囲気に保つ７ｉ法（
特開昭５９−１８５６２７号）等が知らＩしている。こ
れらの方法によってフィルムの冷却斑が大幅に数置され
る。7i method (which maintains an atmosphere of commercial gas that is more electrically insulating than 9qi)
JP-A No. 59-185627) etc. are known. These methods significantly reduce cooling spots in the film.
しかし、シート製造の速度を速め、或い（工より高品負
の７−トを製造１′るに曝工、これら方法も充分でない
。However, these methods are not sufficient to increase the speed of sheet production or to produce high quality sheets.
発明の目的
本発明の目的４工、従来技術の欠点を改良し、より高速
で且つ安定してノートを製造ｊる方法を提供することに
ある。OBJECTS OF THE INVENTION The fourth object of the present invention is to provide a method for manufacturing notebooks faster and more stably by improving the drawbacks of the prior art.
発明の構成・効果
本発明の目的は１本発明によれは１口金から押出した熱
可塑性重合体のソート状熔融＊ａを移動冷却体に接触さ
せて冷却固化１°るシートの製造方法において、該口金
のスリット内部から平板電極を移動冷却体側に突出させ
、かつ該電極と移動冷却体との間に直流電圧を印加する
ことを特徴とする熱可塑性重合体シートの製造力泳によ
って達成される。Structure and effect of the invention The object of the present invention is 1. According to the present invention, there is provided a method for producing a sheet in which a sorted melt*a of a thermoplastic polymer extruded from one die is brought into contact with a moving cooling body and cooled and solidified 1°. This is achieved by a thermoplastic polymer sheet production process characterized by protruding a flat plate electrode from inside the slit of the base toward the moving cooling body and applying a DC voltage between the electrode and the moving cooling body.
本発明に通用されるｋｔ！ｔは、熔融ポリマーをシート
状に押出す口金と移動冷却体とケ少な（とも具備し、＆
ｆＯ金のスリット内部かり、好ましくはこれとは絶縁状
態で、平板［他を移動冷却体側に突出させていることｔ
特徴とてるものである。この平板電極はその先端ｆｉｌ
ｌ（移動冷却体側）が移動冷却体面の＃ｍ方向と平行に
なっている。平板電極は金−、カーボン等の導電性を有
する素材からなるものであれは艮（、その形状は移動冷
却体に向かった側がナイフ状ＶＣなっていることが好ま
しい。kt applicable to the present invention! t is equipped with a die for extruding the molten polymer into a sheet, a moving cooling body, and a
The inside of the gold slit is preferably insulated from the flat plate [the other part should protrude toward the moving cooling body side].
It is a distinctive feature. This flat plate electrode has its tip fil
l (moving cooling body side) is parallel to #m direction of the moving cooling body surface. The flat plate electrode may be made of a conductive material such as gold or carbon, but it is preferable that its shape be a knife-shaped VC on the side facing the moving cooling body.
また、移動冷却体として奢工、冷却ドラム、冷却ローラ
、冷却ベルト等が例示できる。これらの複合体も含まれ
る。移動冷却体は口金のスリットから突出した平板電極
の対電他となるので。Furthermore, examples of the moving cooling body include luxury goods, cooling drums, cooling rollers, cooling belts, and the like. Complexes of these are also included. The moving cooling body serves as a counter current for the flat plate electrode that protrudes from the slit in the base.
その表面材質は導電性を有するものである必賛がある。The surface material must be conductive.
本発明で蚤工、口金のスリット内部から突出した平板電
極と移動冷却体との間に直流電圧を印加するが、一方な
アースし、他方に十又は−の電圧を印加してもよ（、又
一方を＋、他万を−に印加してもよ（、更に双方兵士又
は−として、その間に電位差をつ＆ｊる方法でもよい。In the present invention, a DC voltage is applied between the flat plate electrode protruding from inside the slit of the cap and the moving cooling body, but one side may be grounded and a voltage of 10 or - may be applied to the other. Alternatively, one may be applied to + and the other to - (or, furthermore, both may be soldiers or - and a potential difference may be applied between them).
両電極間にかけ６１！位差は、下記式（１）で与えられ
る臨界電圧Ｖｃより商い電圧である。61 between both electrodes! The potential difference is a voltage less than the critical voltage Vc given by the following equation (1).
ここで、Ｄ＝口金のスリット巾、 Ｌ：口金のランド長。Here, D = slit width of the cap, L: Land length of the cap.
Ｈ：平板を他の下地と移動冷却体と の距離 ｒ：熱可塑性重合体の表面張力 である。H: Flat plate with other substrate and moving cooling body distance of r: surface tension of thermoplastic polymer It is.
例えは、熔融製腺時の温度における表面張力２３ ｄｙ
ｎ／ｃｓ＋のポリエチレンを用いた場合、スリット巾２
．２ｍｌランド長４０ ｍ ！ Ｈ＝ ３０ ｍｍの条
件下では、 Ｖｃ ＝ １０．Ｉ ＫＶとなる。For example, the surface tension at the temperature during melt gland production is 23 dy
When using n/cs+ polyethylene, slit width 2
．． 2ml land length 40m! Under the condition of H = 30 mm, Vc = 10. It becomes I KV.
このａが電圧より高い電圧をかけれは、本発明における
熱可ｍ１！ｆ宜合体は自動的に口金から移動冷却体に向
って引っばられる。印加する電圧は、ｉｔ接熱司１ｇＩ
性重合体に働く引力ＶＣ影響するため、電圧変動率は±
１５１６以下、好ましくは±０．５Ｘ以、下とするのが
望ましい。If this a is applied with a voltage higher than the voltage, the thermoplastic m1! in the present invention is applied. The coalesce is automatically pulled from the cap towards the moving cooling body. The voltage to be applied is 1gI
Due to the attractive force VC acting on the polymer, the voltage fluctuation rate is ±
It is desirable that it be below 1516, preferably below ±0.5X.
本発明におｔする＃Ｉ可塑性に８体は、下記式（２）。The #I plasticity according to the present invention is expressed by the following formula (2).
１３１でそれぞれ示さ八る１ζ、ｑのｊ＠ （ｇ−ｑ
）がｌより小さい重合体である。1ζ, q's j@ (g-q
) is smaller than l.
Ｒ＝Ｘ、／Ｘ、 ・・・・・・・・・・・・
・・・（２！ｑ ” Ｋ＋／ Ｋｔ ・・・
・・・・・・・・・・・（３１かかる重合体としては１
例えはポリエチレン。R=X, /X, ・・・・・・・・・・・・
・・・(2!q ” K+/Kt ・・・
・・・・・・・・・・・・(31 As such a polymer, 1
An example is polyethylene.
ポリプルピレン、ポリオキシメチレン、ホリアミド、ポ
リエステル等、或いはこれらの共ｍ０体や混合体があげ
られる３゜
重合体のＲ−ｑが１であると下記式（４１で示されるポ
リマーの電荷密度σは０となり、電圧をかけても重合体
シエ電気的力を受げなｔ・。又Ｒ・ｑか］より大である
とポリマーの荷［密度か負となり、電圧をかザるとＮ合
体はｔｍ惚の陽亀側に＋、陰他側に−の帯電をし、重合
体と移動冷却体とが互に反発し合ってｍ合体はノート状
にならない。−万、１＜・ｐか１より小さい場合、ポリ
マーの荷電密度σは正となり、電圧をかけると重合体は
陽極側か−、陰極側が十に帯電することから、＃］１［
合体を裏対他の移動冷却体に引力を受けて＠看し、均一
ノート状となる４、ａ＝ｇｏＫＩＸ、 ｌ Ｅ＝Ｅ６Ｃ
ＯＩ！ＷＬ＋ ｖｒ＝２ｔｖ＋ｔｏ＝ ｓ、ｇｓｘｘ
ｏ−１２（Ｊｉ’／ ｍ〕、 Ｒ＝Ｘｔ／Ｘ＊ 。Polypropylene, polyoxymethylene, holamide, polyester, etc., or their co-m0 forms or mixtures can be mentioned.If R-q of the 3° polymer is 1, the charge density σ of the polymer represented by the following formula (41) is 0. Therefore, even if a voltage is applied, the polymer will not receive any electrical force.If it is larger than t. The yang-kame side of the yang-kame side is charged with + and the yin-other side is charged with -, and the polymer and the moving cooling body repel each other, so that the m-combination does not become note-like.From -10,000, 1<・p or 1 When it is small, the charge density σ of the polymer is positive, and when a voltage is applied, the polymer is charged to either the anode side or the cathode side, so #]1[
The merging is caused by the attraction of the other moving cooling body and becomes a uniform notebook shape 4, a=goKIX, l E=E6C
OI! WL+vr=2tv+to=s, gsxx
o-12(Ji'/m], R=Xt/X*.
ｑ＝に、／Ｋ。q=ni, /K.
なお１式（４１のｉｉｌ）ｍはＰｈｉｌｏｇ、 ｉ”ｒ
ａｎｓ＋ Ｒ，Ｓｏｃ。In addition, formula 1 (41 iil) m is Philog, i”r
ans+ R, Soc.
Ｌｏｎｄｏｎ、 ５ｅｒＡ＋ ２６９ 、２９５ （１
９７１） を参照さｎたい。London, 5erA+ 269, 295 (1
Please refer to 971).
本発明における熱可Ｍ１性重合体は、易滑剤り顔料、各
種安定剤等の如き添加剤が含有さｎたものであっても、
前記Ｒ・ｑが１より小さいものならば何でもよい。又、
口金から押出されたシート状熔融物は、単層でも多層に
積層されたものであってもよい。The thermoplastic M1 polymer in the present invention may contain additives such as lubricants, pigments, various stabilizers, etc.
Any material may be used as long as the R.q is smaller than 1. or,
The sheet-like melt extruded from the die may be a single layer or a multi-layer stack.
本発明の方法によれは２口金と移動冷却体との間隔を、
突出平板電極によって、実質的に極で移動してもｖｆ看
性はすぐれ、高速且つ安定したシートの製造が出来ると
いう利点が得られる。According to the method of the present invention, the distance between the two caps and the moving cooling body is
The protruding flat plate electrode provides excellent VF visibility even if it moves substantially at the poles, and has the advantage of allowing high-speed and stable sheet production.
実施例 以下、実施例を掲けて本発明を説明する。Example The present invention will be described below with reference to Examples.
実り例１〜４及び比較例１．２
３５℃のオルンクーーフェノールｐＭ液粘度から算出し
た固有粘度が０．６２であるポリエチレンテレフタレー
トチップを１８０℃で真を乾燥したｆｉ、９０ｓｎφ直
径のスクリューを有する押出機で、２８０℃で熔融し、
次いでスリット巾２．５ｍｔランド長１５ｍの口金を有
するタイに送り、シートとして押し出し、冷却ドラムで
冷却固化してシート１に製造した。その際、口金のスリ
ット内部から、論１図のように、厚さ０．２Ｕの平板電
極をスリット下端に突出させ、ドラムとの間隔（電他間
距蛾）及び印加電圧を一々変えた９、また、実施例３で
は口金下にｓｉ＋’、ガスな１１７分の割合で供給した
。Fruitful Examples 1 to 4 and Comparative Example 1.2 A polyethylene terephthalate chip with an intrinsic viscosity of 0.62 calculated from the viscosity of Orunkuphenol pM liquid at 35°C was dried at 180°C, and a screw with a diameter of 90 snφ was used. Melt at 280°C in an extruder with
Next, it was sent to a tie having a slit width of 2.5 m and a land length of 15 m, extruded as a sheet, and cooled and solidified in a cooling drum to produce Sheet 1. At that time, a flat plate electrode with a thickness of 0.2U was protruded from inside the slit of the cap to the lower end of the slit, as shown in Figure 1, and the distance from the drum (interval distance) and applied voltage were changed one by one9. Further, in Example 3, si+' and gas were supplied under the cap at a rate of 117 minutes.
一万、比較として、平板電極なしで口金に直接印加して
、または印加を中止した以外は実施例と同様に行ってシ
ーＩ・を製造した。For comparison, Sea I was manufactured in the same manner as in the example except that the voltage was applied directly to the cap without a flat electrode or the application was stopped.
これらの結果をｔｎｌ衣に示す。These results are shown in tnl clothing.
第 １ 表 ＊）重着不良な起こさずに安定して引取れる速度Table 1 *) Speed at which it can be taken off stably without causing poor loading.
図は平板電像の突出状況？例示する概略図である。 １：口金スリット部、 ２：キャスデイングトラム。 ３：平板１！他、 ４：高電圧直流電源。 ５：重合体 Is the figure showing the protrusion of the flat plate image? FIG. 2 is an illustrative schematic diagram. 1: Cap slit part, 2: Casting tram. 3: Flat plate 1! Others, 4: High voltage DC power supply. 5: Polymer
Claims (1)
移動冷却体に接触させて冷却固化するシートの製造方法
において、該口金のスリット内部から平板電極を移動冷
却体側に突出させ、かつ該電極と移動冷却体との間に直
流電圧を印加することを特徴とする熱可塑性重合体シー
トの製造方法。A method for manufacturing a sheet in which a sheet-shaped molten flow of a thermoplastic polymer extruded from a die is brought into contact with a moving cooling body to cool and solidify, in which a flat plate electrode is protruded from inside the slit of the die towards the moving cooling body; 1. A method for producing a thermoplastic polymer sheet, comprising applying a DC voltage between the moving cooling body and the moving cooling body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61091999A JPS62248618A (en) | 1986-04-23 | 1986-04-23 | Manufacture of thermoplastic polymer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61091999A JPS62248618A (en) | 1986-04-23 | 1986-04-23 | Manufacture of thermoplastic polymer sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62248618A true JPS62248618A (en) | 1987-10-29 |
Family
ID=14042115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61091999A Pending JPS62248618A (en) | 1986-04-23 | 1986-04-23 | Manufacture of thermoplastic polymer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62248618A (en) |
-
1986
- 1986-04-23 JP JP61091999A patent/JPS62248618A/en active Pending
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