JPS60172517A - Extrusion molding method and apparatus for high polymer sheet-shaped matter - Google Patents

Extrusion molding method and apparatus for high polymer sheet-shaped matter

Info

Publication number
JPS60172517A
JPS60172517A JP59028636A JP2863684A JPS60172517A JP S60172517 A JPS60172517 A JP S60172517A JP 59028636 A JP59028636 A JP 59028636A JP 2863684 A JP2863684 A JP 2863684A JP S60172517 A JPS60172517 A JP S60172517A
Authority
JP
Japan
Prior art keywords
thickness
sheet
slit
temperature
polymer
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.)
Granted
Application number
JP59028636A
Other languages
Japanese (ja)
Other versions
JPH0480814B2 (en
Inventor
Yuichi Tagami
雄一 田上
Hidetoshi Okashiro
英敏 岡城
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP59028636A priority Critical patent/JPS60172517A/en
Publication of JPS60172517A publication Critical patent/JPS60172517A/en
Publication of JPH0480814B2 publication Critical patent/JPH0480814B2/ja
Granted legal-status Critical Current

Links

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
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92542—Energy, power, electric current or voltage
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92695—Viscosity; Melt flow index [MFI]; Molecular weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone

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

PURPOSE:To automatically adjust the width-wise thickness of a sheet-shaped matter by providing a heating body adapted to change the temperature of a polymer passing through a slit section and pushing body for changing the clearance width of the slit section to make both mechanisms operate selectively in accordance with a pattern varied in the thickness. CONSTITUTION:A discharge section 331 is heated up to the temperature correspoinding to the quantity of electricity fed to a heater 35 through a supply power line 354. The viscocity of a melt body passing through a slit section 32 is varied to change the amount of discharge. On the other hand, on the side of the discharge section 341, a heater bolt 36 rises in the temperature according to quantity of electricity fed through a power supply line 362 and presses the discharge section 341 with a thermal expension to change the clearance of the slit section 32. When a thickness gauge 5 detects a large undulation in the thickness pattern of a sheet-shaped matter and the level of the thickness spot is also large and hence, judgment is made by the level of the spot. When the spot is above a fixed level, a slit clearance adjusting mechanism depending on the difference in the thermal expansion is operated with a controller 7. When it is below the fixed level, a temperature adjusting mechanism is operated.

Description

【発明の詳細な説明】 （発明の技術分野） 本発明は、高分子重合体を膜、または、板く以下、これ
らをシート状物という）に成形りるシー１へ状物押出成
形方法および装置に関し、さらに訂しくは、シート状物
の幅方向に厚みブロフフ・イルを調整可能に成したシー
１〜状物押出成形り法ｄ３Ｊ、び装置に関する。Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a sheet extrusion method for forming a high molecular weight polymer into a membrane or plate (hereinafter referred to as a sheet), and The present invention relates to an apparatus, and more particularly to a sheet extrusion molding method d3J and an apparatus in which the thickness of the sheet can be adjusted in the width direction of the sheet.

（従来技術） 一般に、シー１〜状物の厚みは、その使用口的により均
一であることが要求され、これを達成するため、成形装
置内の口金の幅方向の吐出量を均一にする考案が数多く
提案されている。(Prior art) In general, the thickness of the sheet-shaped material is required to be more uniform due to its use. Many have been proposed.

これらの考案は大別すると、口金の吐出部スリンｌ−間
隙を調整する方式と、口金の幅方向の温度を局部的に変
化させることにより、溶融物の粘度を局部的に変化さけ
、流動状態を変化させて口金幅方向の用出弔を制御する
方式の二つの方式に集約され、１灸とは、特に精密な厚
みプロファイルが達成でさるノ“ノ式として注目されて
いる。These ideas can be roughly divided into two methods: one is to adjust the gap between the sulins at the discharge part of the nozzle, and the other is to locally change the temperature in the width direction of the nozzle to avoid local changes in the viscosity of the melt and improve the flow state. The moxibustion method is summarized into two methods: a method that controls the discharge in the width direction of the mouthpiece by changing the moxibustion, and one method is attracting attention as a method that achieves a particularly precise thickness profile.

前者の例としては、米国特許第３９４０２２１月明細μ
ノに開示された方式が、また、後者の例としては、持分
Ｉｌｌ　５６　３１７０号公報に開示された方式が代表
的なものである。An example of the former is U.S. Patent No. 3940222
As an example of the latter, the method disclosed in Japanese Patent Publication No. 56 3170 is typical.

ぞして、いずれの方式の場合にも、得られたシー１−状
物の厚さ測定結果と品種ごとに予め決められた望ましい
厚さレベルとの差を電子８１算機で演亦させ、その差に
見合った調整量、調整位置により吐出量を調整づる。し
かしながら、これら自動調整口金は、口金の吐出量調整
機構の本質的問題により、完全なる自動調整を実施する
ことは出来ない。Therefore, in either method, the difference between the obtained thickness measurement result of the sheet-shaped object and the desired thickness level predetermined for each type is calculated using an electronic 81 calculator, The discharge amount is adjusted according to the adjustment amount and adjustment position commensurate with the difference. However, these automatic adjustment caps cannot perform complete automatic adjustment due to inherent problems in the discharge amount adjustment mechanism of the cap.

すなわち、スリット間隙を調整りる前者のｊＪｊ’ｃで
は、スーツ１−間隙を構成する口金吐出部の弾性変形内
で、［１金吐出部を変形させてスリット間隙を調整づる
ため、シート状物の厚み凹凸パターンのピッチが非常に
小さい場合は、「１全１ｊｌ出部の（幾械的剛性の問題
からイれに見合った微妙なスリット間隙の調整かｔｌｌ
シい。That is, in the former jJj'c to adjust the slit gap, within the elastic deformation of the nozzle discharge part that constitutes the suit 1 gap, [1] In order to adjust the slit gap by deforming the gold discharge part, the sheet-like material If the pitch of the concavo-convex pattern is very small, please adjust the slit gap slightly to compensate for the difference due to mechanical rigidity issues.
Yes.

本発明者等の知見によれば、厚みの凹凸パターンが大き
い場合は調整車の絶対蛸は２００μＩｌ＋程麿は可能で
あるが、厚みの凹凸パターンに追従−Ｃきるのは５Ｑｎ
ｖビツヂまでである。このことは、シー１〜状物の生産
開始時等に発生ずる厚み凹凸パターンのビッヂが大ぎい
場合は十分追従（゛きるしのの微細な厚み調整範囲にＪ
５いては、追従Ｃ′きないことを意味し゛（いる。According to the knowledge of the present inventors, when the thickness uneven pattern is large, the absolute value of the adjustment wheel can be approximately 200μIl+, but the ability to follow the thickness unevenness pattern -C is 5Qn.
It is up to v bits. This means that if the thickness unevenness pattern that occurs at the start of production of sheets 1 to 3 is large, it will be possible to follow the pattern sufficiently.
5 means that tracking C' is not possible.

一方、口金吐出部の温度を調整づる後者の方式は、吐出
部を通過り゛る溶融体の粘度を温度により変化させ吐出
量を調整づるという原理に基づくため、温度調整範囲の
制約から、調整量自身はあまり大ぎくとれず、微調整と
しての効果が大きい。On the other hand, the latter method of adjusting the temperature of the discharge part of the nozzle is based on the principle of adjusting the discharge amount by changing the viscosity of the molten material passing through the discharge part depending on the temperature. The amount itself is not too large and has a great effect as a fine adjustment.

従って、］−１金吐出部の温度を調整Ｊる方式を使用し
た自動調整は、微調整領域内に限られるが、調整精度は
、スリン１〜間隙を調整する前者の方式％式％ 以上の如く、従来方式の自動調整機構を使用した、シー
ト状物の成形装置はシート状物の望ましい厚さレベルが
非常に高度で、シヒヤな厚さ管理が要求される場合は、
生産開始時から完全自動で運転することが非常に難しい
。Therefore, the automatic adjustment using the method of adjusting the temperature of the gold discharge part is limited to the fine adjustment region, but the adjustment accuracy is higher than that of the former method of adjusting the gap. As described above, sheet forming equipment using a conventional automatic adjustment mechanism is difficult to use when the desired thickness level of the sheet material is very high and strict thickness control is required.
It is extremely difficult to operate fully automatically from the start of production.

（発明の目的） 本発明の１」的は、上記従来技術の欠点を解消し、シー
１〜状物の生産開始から終了までの各段階においＣ、シ
ー１〜状物の幅方向の厚み調整を完全に自動的に行ない
、かつ、高度に均一な厚さレベルを維持可能な１！１分
子車合体シート状物押出成形り法および装置を提供づる
ことにある。(Objective of the Invention) The object of the present invention is to eliminate the drawbacks of the above-mentioned prior art, and to adjust the widthwise thickness of C and the sheet 1-like product at each stage from the start to the end of production of the sheet 1-like product. It is an object of the present invention to provide a method and apparatus for extrusion molding a 1!1 molecular vehicle-combined sheet material, which can be carried out completely automatically and maintain a highly uniform thickness level.

（発明の４１４成） 上記目的を達成づる・ための本発明は、Ａ、高分子重合
体を、長手方向に間隙を有して対向りる一対のリップブ
ロックの該間隙からなるスリン１へ部を通しＣ連続的に
押し出し、連続したシー１へ状物を形成してなる高分子
重合体シー１〜状物押出成形７ｊ法にｊ５いて、前記リ
ップブロックの複数個所に、前記スリン１〜部を通過Ｊ
−る重合体の温度４変更づる加熱体、並びに、前記スリ
ン１〜部の間隙幅を変更づる押引体どを配設ｕしめ、前
記スリブ１一部にて形成されたシー１〜状物の幅方向の
厚み斑を検知し、この検知された１νみ斑の人４ｆる部
分につい“Ｃは、この検知に基づく信号により、前記押
引体の所望のものを操作−ｕしめスリン１へ部の間隙を
部分的に変更せしめ、この検知されたｊ９み斑の小なる
部分については、この検知に基づく信号により、前記加
熱体の所望のものを操作ｕしめスリブ１一部を通過する
重合体の温度を部分的に変更せしめることにより、連続
的に形成されるシー１〜状物の１９さを均一にｌしめる
ことを特徴とＪる高分子重合体シー１〜状物押出成形方
法、および、８．４１分子重合体シー１〜状物押出成形
装置のシー１〜状物成形スリッ１一部を形成する一対の
リップブ１」ツクと、該リップブロックの長手方向の複
数個所に設りられたスリン１〜部の重合体の温度を変更
せしめる電熱式加熱体と、該リップブロックの長手方向
の複数個所に設けられたスリット部の間隙幅を変更ｌし
める電熱式加熱により伸縮する押引ポル１−と、前記ス
リット部にて成形されたシート状物の幅方向の厚みを検
出する厚み検出手段と、該ｊ９み検出手段にて検出され
た厚みに基づき厚み斑を判定し、厚み斑の程度を区分覆
る厚み斑区分手段と、該厚み斑区分手段による厚み斑区
分が厚み斑入なるとき信号を発し前記押引ポル１へを作
動せしめる手段と、該厚み斑区分手段による厚み斑区分
が厚み奥手なるとき信号を発し前記加熱体を作動せしめ
る手段と、からなる高分子重合体シート状物押出成形装
置である。(414th aspect of the invention) The present invention for achieving the above object provides that: A. A high molecular weight polymer is added to a sulin 1 formed by a gap between a pair of lip blocks facing each other with a gap in the longitudinal direction. In the process of extrusion molding 7j of a polymer sheet 1 to 7j formed by continuously extruding C through C to form a continuous sheet 1, the surin 1 to 3 parts are applied to a plurality of locations of the lip block. Pass J
- A heating element for changing the temperature of the polymer, and a push/pull element for changing the gap width of the suline 1, etc. Detects the thickness unevenness in the width direction, and for the part of the detected 1ν thickness unevenness, "C" operates the desired push/pull body according to the signal based on this detection. The gap between the parts is partially changed, and for small parts of the detected spots, the desired one of the heating elements is operated based on the signal based on this detection, and the weight passing through a part of the sleeve 1 is adjusted. A method for extrusion molding a polymer sheet 1-like material, characterized in that the thickness of the continuously formed sheet 1-like material is made uniform by partially changing the coalescence temperature; 8. A pair of lip blocks 1" forming a part of the sheet 1-shaped article forming slit 1 of the 8.41-molecular polymer sheet 1-shaped article extrusion molding apparatus, and a pair of lip blocks 1" provided at multiple locations in the longitudinal direction of the lip blocks. An electric heating element that changes the temperature of 1 to 1 part of the polymer of the lip block, and a push-pull that expands and contracts by electric heating that changes the gap width of slits provided at multiple locations in the longitudinal direction of the lip block. 1-, a thickness detection means for detecting the thickness in the width direction of the sheet-like object formed in the slit portion, and a thickness unevenness determined based on the thickness detected by the j9 thickness detection means; thickness unevenness classification means for classifying and covering the degree of thickness unevenness, means for emitting a signal to operate the push/pull port 1 when the thickness unevenness classification by the thickness unevenness classification means is thickness unevenness, and thickness unevenness classification by the thickness unevenness classification means. and a means for generating a signal to activate the heating element when the heating element becomes thick.

（発明の実施例） 本発明に係る高分子重合体シート状物押出成形方法およ
び装置を図面に示す望ましい実施例を用いて、さらに訂
しく説明する。(Examples of the Invention) The method and apparatus for extruding a polymer sheet according to the present invention will be explained in more detail using preferred embodiments shown in the drawings.

第１図は、本発明の方法を実施するためのシー１へ状物
押出成形装置の全体構成図であり、第２図は、本発明の
シート状物押出成形装置の一態様の…１面図計ある。FIG. 1 is an overall configuration diagram of a sheet extrusion molding apparatus for Sheet 1 for carrying out the method of the present invention, and FIG. 2 is a view of one aspect of the sheet extrusion molding apparatus of the present invention There is a diagram.

第′１図にａ３いＣ１１は押出１ｆｆｉ（”あり、シー
ト状物の原料となる高分子重合体、例えば、ポリｌチレ
ンｉ°レフタレ−１へを溶ＦＭ（Ｌ、定量押出しり−る
。In Figure 1, a3 C11 is an extrusion 1ffi ("), in which a high molecular weight polymer, such as polyethylene ethylene, is extruded in a fixed amount into a melt FM (L).

２は押出機１ど口金３とを結ぶ導管であり、口金３は、
第２図に示す本発明の概念を採用したもの（゛ある。４
は口金３より吐出された溶ＦＡｌ！シー１〜状物を冷却
同化覆るチルロール装置、６はデル１］−ル装置４、お
よび、図示しない延伸（幾を経（成形されたシー１〜状
物８の巻取（幾を示づ。７は電子ム１算懇を内蔵した制
御装置であり、チルロール装置４と巻取機６との間に配
置された厚さ：ｌ　５　’ｒ測測定たシー１〜状物８の
厚さレベルと、予め設定された望ましい厚さレベルとの
差を演綽し、その結果に基づいて、口金３の吐出量調整
装置を必凹ω作動さける。2 is a conduit connecting the extruder 1 and the nozzle 3, and the nozzle 3 is
A device that adopts the concept of the present invention shown in FIG.
is the molten FAl discharged from the mouthpiece 3! A chill roll device 6 is used to cool and assimilate the sheets 1 to 8, and a roll device 4 is used to cool and assimilate the sheets 1 to 8. Reference numeral 7 denotes a control device with a built-in electronic control device, which is arranged between the chill roll device 4 and the winder 6 to measure the thickness of the sheets 1 to 8 measured. and a desired thickness level set in advance, and based on the result, the ejection amount adjusting device of the mouthpiece 3 is operated to a certain degree.

第２図において、第１図に示づ押出（幾１にＪ、り定量
押出され、導管２を経て送られたシー１〜状物成形性の
溶８１１体は、Ａの矢印より口金３内に入る。In FIG. 2, the melt 811, which can be formed into a sheet 1-like material, is extruded in a fixed amount and sent through conduit 2, as shown in FIG. to go into.

溶融体は口金３内のマニホルド部３１で幅方向（第２図
においで紙面に直交づる方向）に拡幅された後スリブ１
〜部３２に入り、Ｂの矢印の方向に吐出される。スリッ
ト部３２は、一対のリップブロック３３．３４の下部に
位置づる口金吐出部３３１．３４１にＪ：り形成され、
吐出部３３１側には、吐出部３３′１の口金幅方向の温
度を調整する加熱装置３５が１１＋金幅方向に多数取付
りられてぃ゛る。加熱装置３５は加熱要素としての電気
ヒータ３５１ど供給電力線３５４、Ｊ＞よび、伝熱体３
５３を介し−Ｃ電気ヒータ３５１と熱的、構造的に一体
化された放熱要素としてのフィン３５２がらなり、加熱
装置３５の応答特性の向上とコンパクト化を図っている
。一方、吐出部３４１側には、スリット部３２の間隙を
調整するヒータボルト３６が口金幅方向にこれし多数配
置され、ヒータボルト３６内には、電気ヒータ３６１が
埋設され供給電力線３６２に連結する構成により応答性
の向上とコンパクト化を図っている。The molten material is expanded in the width direction (direction perpendicular to the plane of the paper in FIG. 2) in the manifold part 31 in the mouthpiece 3, and then the molten material is spread into the sleeve 1.
~ section 32 and is discharged in the direction of the arrow B. The slit portion 32 is formed in the nozzle discharge portion 331.341 located at the lower part of the pair of lip blocks 33.34.
On the discharge part 331 side, a large number of heating devices 35 are installed in the width direction of the mouthpiece 11+ for adjusting the temperature of the discharge part 33'1 in the width direction of the mouthpiece. The heating device 35 includes an electric heater 351 as a heating element, a power supply line 354, and a heat transfer body 3.
The fin 352 is thermally and structurally integrated with the -C electric heater 351 via the fin 352 as a heat dissipating element, thereby improving the response characteristics of the heating device 35 and making it more compact. On the other hand, on the discharge part 341 side, a large number of heater bolts 36 for adjusting the gap between the slit parts 32 are arranged in the mouth width direction, and an electric heater 361 is embedded in the heater bolts 36 and connected to the supply power line 362. The configuration aims to improve responsiveness and make it more compact.

ヒータポル１〜３６は、口金のリップブロック３４の左
下端部３７でネジで連結した構成をとることにより手動
でも吐出部３４１を押圧変形さＵることができるが、こ
れは、もっばら口金の組立１１４のスリブ１〜部３２の
間隙の調整の便宜のために使用される。The heater poles 1 to 36 can be manually deformed by pressing the discharge part 341 by connecting them with screws at the lower left end 37 of the lip block 34 of the mouthpiece, but this is difficult to do when assembling the mouthpiece. It is used for the convenience of adjusting the gap between the ribs 1 to 32 of 114.

以上の如く構成された本発明に係る高分子中合体シー１
へ状物押出成形装置におりる吐出量調整１幾構の動作は
、図からも明らかな如＜　、＋１出部３３３１は、供給
電力線３５４を介して加熱装置３３５５に供給された供
給電力量に応じた温度に加熱され、それに伴ないスリツ
ｈ部３２を通過づる溶融体の粘度を変化させ１１出吊を
変化さける。−万、ｕｌ　ｆｌｆ部３４１側においては
、供給電力線３６２を介してヒータポル１〜３６に供給
された供給電力ｈ１に応じてヒータボルト３６が昇渇し
、それにＪ：る熱膨張により吐出部３４１を押圧し、ス
リブ１〜部３２の間隙を変化させる。Polymer medium coalescence sheet 1 according to the present invention configured as above
As is clear from the figure, the operation of the discharge amount adjustment unit 1 in the disk extrusion molding device is as follows. The molten material is heated to a corresponding temperature, and the viscosity of the molten material passing through the slit h portion 32 is changed accordingly, thereby changing the hanging angle of the molten material 11. - On the flf part 341 side, the heater bolt 36 rises and falls in accordance with the supply power h1 supplied to the heater poles 1 to 36 via the supply power line 362, and presses the discharge part 341 due to thermal expansion. Then, the gaps between the ribs 1 to 32 are changed.

以上の説明から分るとおり、本発明の■０要な技術ポイ
ン１〜は、制御特性の異る二種類の調整機構を第２図に
示した如く一対のリップブロックに併設づることにより
、おのＪ３のの調整機構のもつ制御特性の望ましい性能
を必要に応じ活用することにある。イして、上記技術ポ
イントを有する本発明は、完全自動１］金調整Ｉｌｌ構
の実用化を目ざし、各種実験検器を繰り返し実施して得
た下記知見、すなわら、シー１〜状物を成形する工程に
おいでは、生産開始時の不安定領域から安定領域に至る
間、シー１〜状物の厚みパターンには大きな波状状態を
示１犬因明パターンと、小さな波状状態を示す小周期パ
ターンとか混在りるという知見に基づき、その各々の厚
みパターンを個別に調整制御することにより、完全自動
口金調整が可能であるとの結論に達し成されたものであ
る。As can be seen from the above explanation, (1) and (1) important technical points of the present invention are that two types of adjustment mechanisms with different control characteristics are installed side by side in a pair of lip blocks as shown in FIG. The objective is to utilize the desirable performance of the control characteristics of the adjustment mechanism of J3 as necessary. Therefore, the present invention, which has the above-mentioned technical points, aims to put into practical use a completely automatic 1] gold adjustment structure, and the following findings obtained by repeatedly conducting various experimental test instruments, namely, the In the process of molding, during the period from the unstable region at the start of production to the stable region, the thickness pattern of the sheet 1-like object has a large wavy pattern, which is a pattern, and a small periodic pattern, which shows a small wavy state. Based on the knowledge that there is a mixture of thickness patterns, it was concluded that fully automatic cap adjustment is possible by adjusting and controlling each thickness pattern individually.

すなわら、吐出部３４１側に設【プられたヒータポル１
−３６ににる熱１ｋｆｌ　ｌ１ｌｉによるスーツｌ一部
３２の間隙調整’ＪＡ　ｋｊ７は、大きなうねりのある
厚みパターンの修正、すなわら、粗調整領域で、その性
能を発揮し、吐出部３３１側に設けられた加熱装置３５
による湿度調整装置は、小さなうねりのある厚みパター
ンの修正、リーなわら、精密調整時に、その性能を発揮
づる。In other words, the heater pole 1 installed on the discharge part 341 side
-36 heat 1kfl l1li gap adjustment of suit l part 32 'JA kj7 exhibits its performance in correction of thickness pattern with large undulations, that is, in rough adjustment area, and discharge part 331 side heating device 35 provided in
Humidity adjustment device by 2020 demonstrates its performance when correcting thickness patterns with small undulations, adjusting lees, and making precise adjustments.

したがって、本発明に係るシーｉ−状物押出成形装買の
運転方式は、厚みパターンに大ぎなうねりがあり、イの
厚みの凹凸差の大さな領域においては、主として熱膨張
によるスリブ１へ間隙調整機（１４を使用し、厚みパタ
ーンに小さなうねりがあり、その厚みの凹凸差の小さな
領域においては、主として温度調整（幾構を使用ηる運
転を自動的に実施づ−るごどになる。Therefore, in the operation method of the equipment for extruding a sheet I-shaped material according to the present invention, in a region where the thickness pattern has large undulations and there is a large difference in unevenness in the thickness of the sheet I, there is a problem in that the sleeve 1 is mainly affected by thermal expansion. In areas where the thickness pattern has small undulations and the unevenness of the thickness is small, the gap adjustment machine (14) is used to automatically adjust the temperature (using several mechanisms). Become.

そして、厚みパターンに大ぎなうねりがある場合と小さ
なうねりのある場合の判別は、シー１−状物の厚さ泪で
可能Ｃあるが、１９みパターンに人さなうねりのある場
合は厚みｖｌのレベルも大きいので斑のレベルで判別し
、ある一定の斑しベル以−１−では、熱膨服差によるス
リブ１へ間隙調整機（１うを、また、ある一定の環レベ
ル以下では湿度調整＋；賃４ｉｉをという具合に、電子
計算機で判別、指示しくなる自動運転１１式が可能であ
る。また、判別基ＬＭとなる厚さ斑レベルは、調整機構
の特性より３〜１０％の間が望ましく、この間での最適
値は溶融体の熱的性質、例えば、熱分解性、粘度の温度
依存性等と、各調整機構の精密４に熱的特性により決定
される。It is possible to distinguish between cases where the thickness pattern has large undulations and cases where there are small undulations based on the thickness of the sea-like object, but if the thickness pattern has small undulations, the thickness vl Since the level of unevenness is also large, discrimination is made based on the level of unevenness.If the level of unevenness is higher than a certain level, the gap adjustment machine (1) is applied to the sleeve 1 due to the difference in thermal expansion, and if the level of unevenness is below a certain level, humidity It is possible to create 11 types of automatic operation that can be discriminated and instructed by an electronic computer, such as Adjustment+; Wage 4ii.In addition, the thickness unevenness level, which is the discrimination base LM, is 3 to 10% higher than that of the adjustment mechanism. The optimum value between these values is determined by the thermal properties of the melt, such as thermal decomposition properties, temperature dependence of viscosity, etc., and the precise thermal characteristics of each adjustment mechanism.

本発明者等は、本発明に係る装置をポリエステル２Ｉｌ
ＩＩ延沖フイルムの成形装置に組み入れ、テストを繰り
返した結果、１０μｍの厚みのフィルムの場合、厚さ瑳
（ハーフイナー１へ法）５％以上の時熱膨服式スリット
間隙調整機構を、厚さ環５％以下の時吐出部の温度調整
機構を自動的に判別使用することにより、生産開始時よ
り何等人手をねすられづことなく、しかも、厚さ斑が２
％以下のレベルのフィルムを長期間安定して持続生産づ
ることが司１１ヒであった。また、この時の生産開始時
の自動運転前の厚さレベルは３０％と非常に太きいレベ
ルであったが、自動運転開始後３０分で２％のレベルに
速量ることができたものである。The inventors have developed a device according to the invention using polyester 2Il.
As a result of repeated tests by incorporating it into the forming equipment of II Nobuoki Film, in the case of a film with a thickness of 10 μm, the time thermal expansion type slit gap adjustment mechanism with a thickness of 5% or more (half-inner 1 method) was By automatically determining and using the temperature adjustment mechanism of the discharge part when the ring temperature is 5% or less, there is no need for human intervention from the start of production, and thickness unevenness is reduced by 2.
It was the 11th time to be able to stably and sustainably produce a film with a level of less than 20% for a long period of time. In addition, the thickness level before automatic operation at the start of production at this time was a very thick level of 30%, but we were able to quickly reduce it to a level of 2% within 30 minutes after starting automatic operation. It is.

ノ また、フィルム破断等の生産中断後の復帰時においても
、１５〜３０分以内で２％の厚さレベルに達することが
可能であり、押出成形装置の完全自動調整化を達成した
。Furthermore, even when returning to production after production interruption due to film breakage, etc., it is possible to reach a thickness of 2% within 15 to 30 minutes, and fully automatic adjustment of the extrusion molding equipment has been achieved.

以上、本発明を第１図、Ｊ３よび、第２図を用い（に（
１明したが、これらは、あくまでも本発明の技述思想、
ずなわら、生産開始から終了までの各段階で発生りる、
異なる厚みパターンに応じた、その各々の段階て゛・ち
っとも最も通した特性を右りる厚み調整はＩＭを選択的
に作動さけることを具体化した一実施例にすぎず、これ
に限定されるものＣ゛はない。例えば、第２図にｃ１３
いて、１ｊ１出部３Ｊ３１側に、加熱機３５と、ヒータ
ポル１〜３６を交Ｔ′ｊｋ：配置りることも本発明の併
設の範貼に当然含まれる。また、本実施例はフラッ１〜
状成形機で説明したが環状フィルム成形機にも適用可能
Ｃあり、本発明の範陰に入ることはいうまＣちない。Ｊ
：た、スリブ１〜間隙の自動調整方式どし−Ｃは、′ｌ
ｊ１公昭１）５−３８２４９号公＋ｔＪ等で紹介されて
いるスリット間隙を調整するポル１〜を自動走行１６回
転イＪ　＊ｊ体により調整する方式もあり、これし本発
明に通用可能である。The present invention has been described above using FIG. 1, J3, and FIG.
However, these are merely technical ideas of the present invention.
This happens at each stage from the start of production to the end of production.
Thickness adjustment that determines the most suitable characteristics at each stage according to different thickness patterns is only one example of embodying selective activation of IM, and is not limited to this. There is no C. For example, c13 in Figure 2
Of course, the scope of the present invention also includes arranging the heater 35 and the heater poles 1 to 36 in an intersecting manner on the 1j1 output portion 3J31 side. In addition, in this embodiment, the flash 1 to
Although the explanation has been made using a circular film forming machine, it is also applicable to a circular film forming machine, and it goes without saying that it falls within the scope of the present invention. J
: The automatic adjustment method for the sleeve 1 to gap C is 'l
There is also a method of adjusting the slit gap adjustment pole 1~ introduced in Publication No. 5-38249+tJ etc. using an automatic running 16 rotation body, which is applicable to the present invention. .

（発明の効果） 以上、本発明は、リップブロックの複数個所に、特性の
異る厚み調整機構、リーなわら、スリツ１〜部を通過す
る重合体の湿度を変更する加熱体、並びに、前記スリブ
１一部の間隙幅を変更する押引体とを併設せしめ、この
両（幾椙を異なる厚みパターンに対応して適宜選択作動
ｕしめる構成としたので、シー１〜状物の生産開始から
終了までの各段階において、シー１−状物の幅方向の厚
み調整を完全に自動化し、かつ、高度に均一な厚さレベ
ルのシート状物を得ることができる。(Effects of the Invention) As described above, the present invention includes thickness adjustment mechanisms having different characteristics at multiple locations on the lip block, heating bodies for changing the humidity of the polymer passing through the slits 1 to 1, and the above-mentioned A push/pull body for changing the gap width of a part of the sleeve 1 is installed, and the structure is such that the push/pull body can be selectively tightened according to different thickness patterns, so that from the start of production of the seams 1 to 1, At each step up to completion, the thickness adjustment in the width direction of the sheet-like object can be completely automated, and a sheet-like object with a highly uniform thickness level can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の方法を実施覆るだめのシー１〜状物
押出成形装置の全体構成図であり、第２図（Ｊ、本発明
のシート状物押出成形装置の一態様の断面図である。 １・・・押出（幾　２・・・導管 ３・・・口金　４・・・チルロール装置５・・・厚さ５
１　６・・・巻取機 ７・・・制御装置　８・・・シー１〜状物３１・・・マ
ニホルド部　３２・・・スリット部３３．３４・・・リ
ップブロック ３３１．３４１・・・吐出部 ３５・・・加熱装置 ３５１．３６１・・・電気ヒータ ３５２・・・フィン　３５３・・・伝熱体３５４．３６
２・・・供給電力線 ３６・・・ヒータポル１〜　３７・・・ト端部特訂出願
人　東し株式会社FIG. 1 is an overall configuration diagram of an apparatus for extruding a sheet-like material (1 to 1) for carrying out the method of the present invention, and FIG. 1... Extrusion (geometry) 2... Conduit 3... Mouthpiece 4... Chill roll device 5... Thickness 5
1 6... Winder 7... Control device 8... Sea 1-shaped object 31... Manifold section 32... Slit section 33.34... Lip block 331.341... Discharge Part 35... Heating device 351.361... Electric heater 352... Fin 353... Heat transfer body 354.36
2... Supply power line 36... Heater port 1 to 37... To end Special applicant: Toshi Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] （１） （イ）高分子重合体を、長手方向に間隙を有し−Ｃ対向
する一対のリップブロックの該間隙からなるスリット部
を通しＣ連続的に押し出し、連続したシー１−私物を成
形してなる高分子重合体シー１〜状物押出成形方法にお
いて、 （ロ）前記リップブロックの複数個所に、前記スリット
部を通過り゛る小合体の温度を変更りる加熱体、並びに
、前記スリブ１へ部の間隙幅を変更する押引体とを配設
μしめ、 （ハ）前記スリン１一部にて成形されたシート状物の幅
１ノ向の厚みｕｌを検知し、この検知されＩＣ厚み斑の
大なる部分については、この検知に基づく信号により、
前記押引体の所望のものを操作μしめスリット部の間隙
を部分的に変更せしめ、この検知された厚み斑の小なる
部分については、この検知に基づく信Ｖ〕により、前記
加熱体の所望のものを操作゛ｕしめスリブ１〜部を通過
する重合体の温度を部分的に変更せしめることにより、
連続的に成形されるシート状物の厚さを均一にせしめる
ことを特徴とする高分子重合体シート状物押出成形方法
。(1) (A) Continuously extrude the polymer through a slit section of a pair of lip blocks facing each other with a gap in the longitudinal direction, forming a continuous seam 1-Personal item. In the method for extrusion molding a polymer sheet 1 to 1, which comprises: (b) heating elements at a plurality of locations of the lip block for changing the temperature of the small aggregate passing through the slit; (3) Detecting the thickness ul in the width direction of the sheet-like object formed from a part of the sleeve 1, and detecting this. The large part of the IC thickness unevenness can be detected using the signal based on this detection.
The desired push/pull body is operated μ to partially change the gap between the slit portions, and when the detected small thickness unevenness is detected, based on the belief V] based on this detection, the desired heating body is By operating the device and partially changing the temperature of the polymer passing through 1 to 1 parts of the sleeve,
A method for extrusion molding a polymer sheet, characterized by making the thickness of a continuously molded sheet uniform. （２） （イ）高分子１０合体シート状物押出成形装置のシー１
〜状物成形スリツト部を形成する一対のリップブロック
と （ロ）該リップブロックの長手方向の複数個所に設【プ
られたスリン１一部の重合体の温度を変更せしめる電熱
式加熱体と、 （ハ）該リップブロックの長手方向の複数個所に設けら
れたスリブ１〜部の間隙幅を変更せしめる電熱式加熱に
より伸縮する押引ボルトと、（ニ）前記スリン１一部に
て成形されたシー１〜状物の幅方向の厚みを検出する厚
み検出手段と、（ホ）該厚み検出手段にて検出された厚
みに基づサＩＩ７み斑を判定し、厚み斑の程瓜を区分づ
る厚み斑区分手段と、 （へ）該厚み倒区分手段による厚み斑区分が厚み斑入な
るとき信号を発し前記押引ポル１〜を作動せしめる手段
と、 （１−）該厚み斑区分手段による厚み功区ブ）がθみ斑
小なるとき信号を発し前記加熱体を作動ｕしめる手段と
、 からなる高分子重合体シート状物押出成形ｔ４買。(2) (a) Sheet 1 of the extrusion molding device for polymer 10-coated sheet material
(b) a pair of lip blocks forming a slit portion for forming a shaped object; (b) an electric heating element for changing the temperature of a part of the polymer placed in Surin 1 installed at multiple locations in the longitudinal direction of the lip block; (c) a push-pull bolt that expands and contracts by electric heating to change the gap width between the ribs 1 and 1 provided at multiple locations in the longitudinal direction of the lip block; Thickness detecting means for detecting the thickness of the object in the width direction of the sheet 1 to 7; Thickness irregularity classification means; (f) means for emitting a signal to activate the push/pull ports 1 to 1 when the thickness irregularity classification by the thickness flattening means is a thickness irregularity; (1-) the thickness irregularity classification means by the thickness irregularity classification means; means for emitting a signal and activating the heating element when the θ deviation is small;
JP59028636A 1984-02-20 1984-02-20 Extrusion molding method and apparatus for high polymer sheet-shaped matter Granted JPS60172517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59028636A JPS60172517A (en) 1984-02-20 1984-02-20 Extrusion molding method and apparatus for high polymer sheet-shaped matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59028636A JPS60172517A (en) 1984-02-20 1984-02-20 Extrusion molding method and apparatus for high polymer sheet-shaped matter

Publications (2)

Publication Number Publication Date
JPS60172517A true JPS60172517A (en) 1985-09-06
JPH0480814B2 JPH0480814B2 (en) 1992-12-21

Family

ID=12254017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59028636A Granted JPS60172517A (en) 1984-02-20 1984-02-20 Extrusion molding method and apparatus for high polymer sheet-shaped matter

Country Status (1)

Country Link
JP (1) JPS60172517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38056E1 (en) 1986-01-14 2003-04-01 Constructiewerkhuizen G. Verbruggen Apparatus for adjusting the lip opening of an extrusion die

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295768A (en) * 1976-02-09 1977-08-11 Mitsubishi Plastics Ind Method of extrusion molding thermoplastic synthetic resin film
JPS563171A (en) * 1979-06-22 1981-01-13 Central Glass Co Ltd Corner grinding device for corner of glass plate
JPS571409A (en) * 1980-06-04 1982-01-06 Hitachi Ltd Controller for addition of chemical in water clarification plant
JPS5916722A (en) * 1982-07-20 1984-01-27 Toray Ind Inc Slit gap adjuster of mouth piece

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295768A (en) * 1976-02-09 1977-08-11 Mitsubishi Plastics Ind Method of extrusion molding thermoplastic synthetic resin film
JPS563171A (en) * 1979-06-22 1981-01-13 Central Glass Co Ltd Corner grinding device for corner of glass plate
JPS571409A (en) * 1980-06-04 1982-01-06 Hitachi Ltd Controller for addition of chemical in water clarification plant
JPS5916722A (en) * 1982-07-20 1984-01-27 Toray Ind Inc Slit gap adjuster of mouth piece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38056E1 (en) 1986-01-14 2003-04-01 Constructiewerkhuizen G. Verbruggen Apparatus for adjusting the lip opening of an extrusion die

Also Published As

Publication number Publication date
JPH0480814B2 (en) 1992-12-21

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