JP2701465B2 - Method and apparatus for supplying molten plastic raw material to calendar - Google Patents
Method and apparatus for supplying molten plastic raw material to calendarInfo
- Publication number
- JP2701465B2 JP2701465B2 JP1183714A JP18371489A JP2701465B2 JP 2701465 B2 JP2701465 B2 JP 2701465B2 JP 1183714 A JP1183714 A JP 1183714A JP 18371489 A JP18371489 A JP 18371489A JP 2701465 B2 JP2701465 B2 JP 2701465B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- calendar
- plastic
- continuous kneader
- degassing chamber
- 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
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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
- B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
- B29C31/044—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds with moving heads for distributing liquid or viscous material into the moulds
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、溶融混練したプラスチック原料をカレンダ
に供給する供給方法及び装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a supply method and an apparatus for supplying a melt-kneaded plastic raw material to a calendar.
従来のプラスチック溶融原料の供給装置を第４図に示
す。図のように配合されたプラスチック原料ｂは、連続
混練機ａに搬入され加熱され、次いで混合と練り即ち混
練が行われる。混練後搬送コンベアｃによりストレーナ
押出機ｄに供給される。混練されたプラスチック原料ｂ
は溶融状態でストレーナ押出機ｄの先端部に設けた金網
よりゴミを濾過され首振コンベアｅに供給される。首振
コンベアｅにより該プラスチック溶融原料ｂ′はカレン
ダｆのカレンダロールｇ上に設定幅に形成されるストッ
クバンクｈに均一に供給されカレンダロールｇの隙間を
通って一様な厚さに圧延され製品フイルムｉとされる
（特開昭61−100428号）。FIG. 4 shows a conventional plastic molten material supply apparatus. The plastic raw material b compounded as shown in the figure is carried into the continuous kneader a and heated, and then mixed and kneaded, that is, kneaded. After kneading, the mixture is supplied to a strainer extruder d by a conveyor c. Kneaded plastic raw material b
In a molten state, dust is filtered from a wire mesh provided at the tip end of the strainer extruder d and supplied to the oscillating conveyor e. The plastic molten raw material b 'is uniformly supplied to the stock bank h formed on the calendar roll g of the calendar f by the oscillating conveyer e to have a predetermined width, and is rolled to a uniform thickness through the gap of the calendar roll g. This is called product film i (JP-A-61-100428).
しかし、従来の装置は上述のような構成なので、 （１） プラスチック溶融原料ｂ′は首振コンベアｅ上
を搬送柱に長期間に渡り外気との接触により表面温度が
低下し、内部との温度差が発生する。このためカレンダ
ロールｇでの圧延時に、この温度差により発生する粘度
差によって製品フイルムｉに流れ模様が浮き上がり製品
フイルムｉの品質に悪影響を与え、製品価値を低下させ
る。However, since the conventional apparatus has the above-described configuration, (1) the surface temperature of the plastic molten raw material b 'decreases due to contact with the outside air for a long time on the conveyer column on the oscillating conveyer e, and the temperature with the internal A difference occurs. For this reason, at the time of rolling with the calendar roll g, the flow pattern floats on the product film i due to the viscosity difference generated due to the temperature difference, which adversely affects the quality of the product film i and lowers the product value.
（２） 搬送コンベアｃ及び首振コンベアｅのコンベア
部が熱により劣化影響を受けるため、部品交換等の保守
による手間がかかる。(2) Since the conveyor sections of the transport conveyor c and the oscillating conveyor e are deteriorated by heat, maintenance such as replacement of parts takes time and effort.
（３） 連続混練機ａからカレンダｆまでの各装置が独
立に構成されているために製造ラインの長さが長くなっ
てしまう。(3) Since each device from the continuous kneader a to the calendar f is configured independently, the length of the production line becomes long.
等の問題点を有していた。And so on.
そこで本発明は、上述の問題点を解決せんとするもの
で、連続混練機から首振コンベア間を一体化し、溶融原
料を密閉された状態でストックバンクへ供給することに
より、外気と長時間さらされ冷却による温度変化を防止
するとともに、製造ラインの長さを短縮化することを目
的としている。In view of the above, the present invention has been made to solve the above-described problem. By integrating the oscillating conveyor from the continuous kneading machine and supplying the molten raw material to the stock bank in a sealed state, it is exposed to outside air for a long time. The purpose of the present invention is to prevent a temperature change due to cooling and shorten the length of the production line.
上記問題点を解決するために、本発明のカレンダへの
プラスチック溶融原料の供給方法においては、プラスチ
ック原料を連続混練機で加熱混練してプラスチック溶融
原料とし、該プラスチック溶融原料を脱気泡室内で脱気
し、脱気したプラスチック溶融原料を水平面内で揺動す
るストレーナ押出機によりカレンダのストックバンクへ
供給させるものである。In order to solve the above problems, in the method of supplying a plastic molten raw material to a calendar according to the present invention, the plastic raw material is heated and kneaded by a continuous kneader to form a plastic molten raw material, and the plastic molten raw material is removed in a degassing chamber. The melted and degassed plastic molten raw material is supplied to a stock bank of a calendar by a strainer extruder swinging in a horizontal plane.
また上記方法を実施するための装置は、連続混練機
を、該連続混練機の吐出口に連通するとともに排気口を
有する脱気泡室と、該脱気泡室に連通するとともに脱気
泡室の軸芯を中心として水平面内で揺動可能なストレー
ナ押出機と、前記連続混練機、脱気泡室及びストレーナ
押出機を載置するとともにカレンダ圧延ライン方向に前
後進自在なベースを設けた構成を有する。Further, an apparatus for carrying out the above method includes a continuous kneader, a degassing chamber communicating with a discharge port of the continuous kneader and having an exhaust port, and an axial center of the degassing chamber communicating with the degassing chamber. , A strainer extruder capable of swinging in a horizontal plane, and a base on which the continuous kneader, degassing chamber, and strainer extruder are mounted and which is capable of moving forward and backward in the direction of the calendar rolling line.
混練されたプラスチック溶融原料は、脱気泡室でガス
や空気等を除去され、首振り可能なストレーナ押出機よ
りカレンダロールのストックバンクに均一に押出され
る。The kneaded plastic molten raw material is subjected to removal of gas, air and the like in a defoaming chamber, and is uniformly extruded from a swingable strainer extruder to a stock bank of a calendar roll.
以下本発明の実施例を図面にを参照しつつ説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図から第３図は本発明の実施例を示すものであ
る。1 to 3 show an embodiment of the present invention.
カレンダ40の上流側に、カレンダ圧延ライン方向１に
延びた２本のレール３、３を上面に有した支持台２が設
けてある。レール３、３上には複数の車輪４を有するベ
ース５がカレンダ圧延ライン方向１に前後進自在に配設
されている。ベース５の上面には連続混練機６が載置し
てある。Provided on the upstream side of the calendar 40 is a support base 2 having two rails 3, 3 extending on the calendar rolling line direction 1 on its upper surface. On the rails 3, a base 5 having a plurality of wheels 4 is disposed so as to be able to move back and forth in the calendar rolling line direction 1. On the upper surface of the base 5, a continuous kneader 6 is mounted.
連続混練機６の上部には粉末のプラスチック原料７を
取込むホッパ８が設けられている。ホッパ８の下端に混
練筒９が連通して設けられ、該混練筒９内には図示しな
い加熱装置とプラスチック原料７を混練するスクリュー
10を内蔵している。スクリュー10の反カレンダ40側の後
端部にはスクリュー10を回転駆動する回転駆動装置12が
連結されている。回転駆動装置12は、モータ13、減速機
14、カップリング15より成りベース５上に設けてある。Above the continuous kneader 6, a hopper 8 for taking in a powdered plastic raw material 7 is provided. A kneading cylinder 9 is provided at the lower end of the hopper 8 so as to communicate therewith, and a heating device (not shown) and a screw for kneading the plastic raw material 7 are provided in the kneading cylinder 9.
Built-in 10. A rotation drive device 12 for rotating the screw 10 is connected to a rear end of the screw 10 on the side opposite to the calendar 40. The rotation drive device 12 includes a motor 13, a reduction gear
14 and a coupling 15, which is provided on the base 5.
スクリュー10の先端が位置する混練筒９の吐出口11に
は脱気泡室16が気密用のシール17（Ｏリング）を介して
締結体18により取付けられている。脱気泡室16の上部に
は図示しない真空ポンプに接続された排気口19が設けて
ある。脱気泡室16の中間部にはプラスチック溶融原料
７′の混練及び脱気状態を目視観察するための窓20が開
口され、耐熱性ガラスの透明板21が取付られている。脱
気泡室16の下端開口部22の下部外周面24にはストレーナ
押出機23が揺動自在に外嵌されている。A defoaming chamber 16 is attached to a discharge port 11 of the kneading cylinder 9 where the tip of the screw 10 is located by a fastening member 18 via an airtight seal 17 (O-ring). An exhaust port 19 connected to a vacuum pump (not shown) is provided above the degassing chamber 16. A window 20 for visually observing the state of kneading and degassing of the plastic molten raw material 7 'is opened in an intermediate portion of the degassing chamber 16, and a transparent plate 21 made of heat-resistant glass is attached. A strainer extruder 23 is swingably fitted on the lower outer peripheral surface 24 of the lower end opening 22 of the degassing chamber 16.
即ちストレーナ押出機23の押出筒25の基端部上部は、
下部外周面24にシール26（パッキン）押え板27および締
結体28により外嵌されている。一方ストレーナ押出機23
は、ベース５上に固着された複数又は１個（本発明では
３個）のライナ29の上面を揺動する架台30に固着されて
いる。押出筒25にはスクリュー31が内蔵されている。ス
クリュー31の反カレンダ40側の後端部には回転駆動装置
32が接続されている。回転駆動装置32はモータ33、減速
機34、カップリング35より成り架台30上に設けてある。
さらにスクリュー31の後端部は、気密用のシール36（パ
ッキン）、押え板37及び締結体38により押出筒25の後端
部に気密状態に挿通されている。That is, the upper part of the base end of the extrusion cylinder 25 of the strainer extruder 23 is
The lower outer peripheral surface 24 is externally fitted with a seal 26 (packing) holding plate 27 and a fastening body 28. Meanwhile strainer extruder 23
Is fixed to a gantry 30 swinging on the upper surface of a plurality or one (three in the present invention) liners 29 fixed on the base 5. The extrusion cylinder 25 has a screw 31 built therein. A rotary drive is provided at the rear end of the screw 31 on the side opposite to the calendar 40.
32 is connected. The rotation drive device 32 includes a motor 33, a speed reducer 34, and a coupling 35, and is provided on the gantry 30.
Further, the rear end of the screw 31 is hermetically inserted through the rear end of the extruding cylinder 25 by an airtight seal 36 (packing), a holding plate 37 and a fastening body 38.
ストレーナ押出機23の押出筒25の先端部の吐出口39内
には、プラスチック溶融原料７′中に混入したゴミを濾
過する図示しない金網製のストレーナが設けられてい
る。A wire mesh strainer (not shown) for filtering dust mixed in the plastic molten raw material 7 'is provided in the discharge port 39 at the tip of the extrusion cylinder 25 of the strainer extruder 23.
架台30は図示しない駆動装置により、脱気泡室16の軸
芯48を中心にライナ29上で水平に揺動するようになって
おり、架台30と共にストレーナ押出機23も揺動する。The gantry 30 is configured to swing horizontally on the liner 29 around the axis 48 of the degassing chamber 16 by a drive device (not shown), and the strainer extruder 23 swings together with the gantry 30.
ストレーナ押動機23の揺動範囲θ１を検出し、制御す
るようにリミットスイッチ47、47が設けられている。さ
らにストレーナ押出機23はメインテナンスのためにカレ
ンダ圧延ライン方向１からストロークＬ後退後、揺動範
囲θ２（略90度）移動できる。カレンダ40は４本のカレ
ンダロール42を逆Ｌ字状にスタンド41内に配置した構造
で、上方の２本のカレンダロール42、42上にストックバ
ンク43が形成されるようになっている。ストックバンク
43の幅を規制するためにカレンダロール42、42の両端近
傍に略扇形状の堰板45、45が設けられている。堰板45、
45の位置はスタンド41、41に取付けられたシリンダ46、
46により移動可能となっている。Detecting a swing range theta 1 of the strainer pressing machine 23, the limit switch 47 is provided to control. Further, the strainer extruder 23 can move in the swing range θ 2 (approximately 90 degrees) after retreating the stroke L from the calendar rolling line direction 1 for maintenance. The calendar 40 has a structure in which four calendar rolls 42 are arranged in an inverted L-shape in a stand 41, and a stock bank 43 is formed on the upper two calendar rolls 42, 42. Stock bank
In order to regulate the width of 43, substantially fan-shaped dam plates 45, 45 are provided near both ends of the calendar rolls 42, 42. Dam board 45,
The position of 45 is the cylinders 46 attached to the stands 41, 41,
It can be moved by 46.
次に作用を説明する。 Next, the operation will be described.
ホッパ８に投入された粉末のプラスチック原料７は、
連続混練機６内で加熱されるとともにスクリュー10で混
練されてプラスチック溶融原料７′となる。The plastic raw material 7 of the powder put into the hopper 8
It is heated in the continuous kneader 6 and kneaded by the screw 10 to form a plastic molten raw material 7 '.
連続混練機６を出たプラスチック溶融原料７′は脱気
泡室に送られ、ここで混練中に発生した気体や、混練当
初に混入した気体を真空ポンプで吸引除去される。プラ
スチック溶融原料７′は、次にストレーナ押出機23に送
られスクリュー31により、押出された先端に設けたスト
レーナにより除塵された後、カレンダ40のストックバン
ク43に供給される。ストレーナ押出機23は図のようにθ
１の範囲で揺動しているので、ストックバンク43上にプ
ラスチック溶融原料７′が均一に注入される。ストック
バンク43のプラスチック溶融原料７′はカレンダロール
42内に形成される隙間を通って順次圧延され製造フィウ
ム44となり、次の工程ラインに搬送される。The molten plastic raw material 7 'that has exited the continuous kneader 6 is sent to a defoaming chamber, where gas generated during kneading and gas mixed at the beginning of kneading are suctioned and removed by a vacuum pump. The molten plastic raw material 7 ′ is then sent to a strainer extruder 23, where the dust is removed by a strainer provided at the extruded tip by a screw 31, and then supplied to a stock bank 43 of a calendar 40. As shown in the figure, the strainer extruder 23
1 , the plastic molten raw material 7 'is uniformly injected onto the stock bank 43. Stock bank 43 plastic molten material 7 'is a calendar roll
The rolls are sequentially rolled through the gaps formed in the rolls 42 to form the production fium 44, which is transported to the next process line.
このように連続混練機と揺動自在なストレーナ押出機
を脱気泡室を介して一帯構造とし、ストレーナ押出機か
ら直接プラスチック溶融原料をカレンダへ送るようにし
たので搬送中の外気との接触によるプラスチック溶融原
料の冷却が少なく有害な気泡も除去される。In this way, the continuous kneader and the swingable strainer extruder have a single-zone structure through the deaeration chamber, and the plastic melted raw material is sent directly from the strainer extruder to the calendar, so that the plastic is brought into contact with the outside air during transportation. The cooling of the molten material is small, and harmful bubbles are also removed.
なお、本発明は上記実施例にのみ限定されるものでは
なく、本発明の要旨を逸脱しない範囲内において種々変
更を加え得ることは勿論である。It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.
以上説明したように、本発明のカレンダへのプラスチ
ック溶融原料の供給方法及び装置によれば、下記の如き
種々の優れた効果を奏し得る。As described above, according to the method and the apparatus for supplying a plastic molten raw material to the calendar of the present invention, the following various excellent effects can be obtained.
（１） 連続混練機からストレーナ押出機間の構造を一
体化し外気との接触を遮断させたので、プラスチック溶
融原料を冷却させずにカレンダへ搬送できるので製品フ
ィルムに流れ模様がなく品質を向上させることができ
る。(1) Since the structure between the continuous kneader and the strainer extruder is integrated and the contact with the outside air is cut off, the plastic melted raw material can be transported to the calendar without cooling, so that the product film has no flow pattern and the quality is improved. be able to.
（２） 脱気泡室でプラスチック溶融原料に負圧をかけ
て気泡を除去させたので製品フィルムの気泡による欠陥
がふせげる。(2) Since a bubble is removed by applying a negative pressure to the plastic molten material in the degassing chamber, defects due to bubbles in the product film are increased.
（３） コンベアが不用となるので製造ラインを短縮化
できるとともに、コンベア部の保守も無くすことができ
る。(3) Since the conveyor is unnecessary, the production line can be shortened, and the maintenance of the conveyor section can be eliminated.
第１図は本発明の実施例を示す一部断面の正面図、第２
図は第１図のｘ−ｘ矢視図、第３図は脱気泡室付近の一
体化構造を示す部分断面拡大図、第４図は従来のカレン
ダ圧延ラインを示す正面図である。 図中１はカレンダ圧延ライン方向、５はベース、６は連
続混練機、７はプラスチック原料、７′はプラスチック
溶融原料、11は吐出口、16は脱気泡室、19は排気口、23
はストレーナ押出機、40はカレンダ、43はストックバン
ク、48は軸芯を示す。FIG. 1 is a partially sectional front view showing an embodiment of the present invention, and FIG.
FIG. 1 is a view taken in the direction of arrows xx in FIG. 1, FIG. 3 is an enlarged partial cross-sectional view showing an integrated structure near the degassing chamber, and FIG. 4 is a front view showing a conventional calendar rolling line. In the drawing, 1 is the direction of the calendar rolling line, 5 is the base, 6 is the continuous kneader, 7 is the plastic raw material, 7 'is the plastic molten raw material, 11 is the discharge port, 16 is the degassing chamber, 19 is the exhaust port, 23
Denotes a strainer extruder, 40 denotes a calendar, 43 denotes a stock bank, and 48 denotes a shaft core.
Claims (2)
してプラスチック溶融原料とし、該プラスチック溶融原
料を脱気泡室内で脱気し、脱気されたプラスチック溶融
原料を水平面内で揺動するストレーナ押出機によりカレ
ンダのストックバンクへ供給することを特徴とするカレ
ンダへのプラスチック溶融原料の供給方法。A plastic raw material is heated and kneaded by a continuous kneader to form a plastic molten raw material. The plastic molten raw material is degassed in a degassing chamber, and the degassed plastic molten raw material is oscillated in a horizontal plane. A method for supplying a plastic molten raw material to a calendar, wherein the raw material is supplied to a calendar stock bank by a machine.
通するとともに排気口を有する脱気泡室と、該脱気泡室
に連通するとともに脱気泡室の軸芯を中心として水平面
内で揺動可能なストレーナ押出機と、前記連続混練機、
脱気泡室及びストレーナ押出機を載置するとともにカレ
ンダ圧延ライン方向に前後進自在なベースとから成るこ
とを特徴とするカレンダへのプラスチック溶融原料の供
給装置。2. A continuous kneader, a degassing chamber communicating with a discharge port of the continuous kneader and having an exhaust port, and communicating with the degassing chamber and in a horizontal plane about the axis of the degassing chamber. Swingable strainer extruder, and the continuous kneader,
An apparatus for feeding a plastic melted raw material to a calendar, comprising a defoaming chamber and a base on which a strainer extruder is placed and which can move forward and backward in the direction of a calendar rolling line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1183714A JP2701465B2 (en) | 1989-07-18 | 1989-07-18 | Method and apparatus for supplying molten plastic raw material to calendar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1183714A JP2701465B2 (en) | 1989-07-18 | 1989-07-18 | Method and apparatus for supplying molten plastic raw material to calendar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0349912A JPH0349912A (en) | 1991-03-04 |
| JP2701465B2 true JP2701465B2 (en) | 1998-01-21 |
Family
ID=16140674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1183714A Expired - Lifetime JP2701465B2 (en) | 1989-07-18 | 1989-07-18 | Method and apparatus for supplying molten plastic raw material to calendar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701465B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2562770B2 (en) * | 1992-08-27 | 1996-12-11 | 住江織物株式会社 | Backing method for tile carpet |
| JP6560031B2 (en) * | 2015-06-11 | 2019-08-14 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Rubber sheet manufacturing apparatus and manufacturing method |
| CN108327307A (en) * | 2018-04-03 | 2018-07-27 | 江阴市富华包装材料有限公司 | A kind of production equipment of ageing-resistant weatherability PVC printed sheets |
-
1989
- 1989-07-18 JP JP1183714A patent/JP2701465B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349912A (en) | 1991-03-04 |
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