JPS58203018A - Manufacture of thermoplastic resin sheet or film - Google Patents
Manufacture of thermoplastic resin sheet or filmInfo
- Publication number
- JPS58203018A JPS58203018A JP57086475A JP8647582A JPS58203018A JP S58203018 A JPS58203018 A JP S58203018A JP 57086475 A JP57086475 A JP 57086475A JP 8647582 A JP8647582 A JP 8647582A JP S58203018 A JPS58203018 A JP S58203018A
- Authority
- JP
- Japan
- Prior art keywords
- film
- slit
- thermoplastic resin
- water
- cooling
- 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
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
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
-
- 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
- B29C48/88—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は熱可塑性樹脂シートまたはフィルムの製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing thermoplastic sheets or films.
従来、熱可塑性樹脂のT−グイ急冷フィルムまた(グシ
ートの製造方法としてチルロール法、水冷法などが知ら
れている。しかし、チルロール法は高速成形時、ロール
と溶a樹脂膜の−に空気をまき込んだり、ロールと溶融
樹脂膜の密着性が悪いために厚みムラやシワが発生した
り、さらには厚物シート等にあっては溶融樹脂膜の表面
と裏面の冷却差によるカールの発生や不十分な急冷によ
る透明性1表面光沢の低下などの欠点がある。また、水
冷法では溶融樹脂膜からの放熱が冷却水面において局部
的に生じて水面の波立ち、揺れなどに起因する冷却の不
均一、冷却不足から厚みムラや6明性9表面光沢のムラ
や低下が生じ、高速成形を行なえないという欠点がある
。Conventionally, the chill-roll method and water-cooling method are known as methods for producing thermoplastic resin T-Glue sheets. Thickness unevenness and wrinkles may occur due to poor adhesion between the roll and the molten resin film, and furthermore, in the case of thick sheets, curling may occur due to the difference in cooling between the front and back sides of the molten resin film. There are drawbacks such as a decrease in transparency and surface gloss due to insufficient rapid cooling.In addition, in the water cooling method, heat radiation from the molten resin film occurs locally on the cooling water surface, resulting in cooling failures caused by ripples and shaking of the water surface. Due to lack of uniformity and insufficient cooling, uneven thickness and unevenness or reduction in surface gloss occur, resulting in the disadvantage that high-speed molding cannot be performed.
ところで、水冷法はロール法よりも効率よくシート等を
冷却できるという利点がある。そのため、前記した水冷
法の欠点を改良すb方法として、溶融樹脂膜の両面を流
動する冷却水流によって冷却することが提案されている
。しかしながら、この改良法によってもシート等の透明
性などの性質や高速成形性において十分に満足すること
はできない0
本発明者は、すでにこれらの欠点を解消した熱可塑性樹
脂シートまたはフィルムの製造方法を開発した(特願昭
57−55291号)が、引続き研究を重ねた結果、さ
らにすぐれた効果が得られる方法を見出し、本発明を完
成したのである。By the way, the water cooling method has the advantage of being able to cool sheets etc. more efficiently than the roll method. Therefore, as a method to improve the drawbacks of the water cooling method described above, it has been proposed to cool the molten resin film with a flow of cooling water flowing on both sides of the film. However, even with this improved method, properties such as transparency and high-speed moldability of the sheet cannot be fully satisfied. The present inventor has already developed a method for producing thermoplastic resin sheets or films that eliminates these drawbacks. However, as a result of continued research, they discovered a method with even better effects and completed the present invention.
本発明はT−ダイから溶融状態で押出さねた膜状の熱可
甲注に4 mを冷却水の流れる多段スリットに導入する
ことを特徴とする熱可塑性電圧シートまたはフィルムの
製造方法である。The present invention is a method for producing a thermoplastic voltage sheet or film, which is characterized by introducing a 4 m thick film-like thermoplastic sheet extruded in a molten state from a T-die into a multistage slit through which cooling water flows. .
本発明においてシートやフィルムの原料として用いる熱
可塑性砂原としては特に制限かなく、たとえはホリオレ
フイン(ポリエチレン、ポリプロピレンなと)、ホ゛リ
スチレン、ポリ塩化ビニル等を挙げることかでき、特に
従来よりシート等の透明性や表面性などに問題のあった
結晶性熱可妙性樹脂につ(−7てもこのような問題を生
起することなく使用することかでさる。また、本発明の
シートやフィルムには多層シートやフィルムも含まで(
、さら(こシリカ、タルク、バラ−ターシャリ−ブチル
安11査噸、アルミニウム、ジベンジリテンソルヒトー
ルなどの辺り剤を添)JU Lだものも古まイ【る。The thermoplastic sand used as a raw material for sheets and films in the present invention is not particularly limited, and examples include polyolefin (polyethylene, polypropylene, etc.), polystyrene, polyvinyl chloride, etc. Although crystalline thermoplastic resins with problems such as transparency and surface properties (-7) can be used without causing such problems, the sheets and films of the present invention includes multilayer sheets and films (
Even the ones made by JUL (added with smearing agents such as silica, talc, bara-tert-butyl alcohol, aluminum, and dibenzylitensorhitol) are old.
不発明は基本同番こは水冷法による熱可塑性樹脂シート
またはフィルムの製造法に關;するものである。T−ダ
イから押出される溶融状態の膜状熱可塑性にカ旨を冷却
水の流れるスリットに導入する場合、該スリットにおけ
る水位を可及的に低くしないと、膜状熱可塑性樹脂の冷
却が不均一になり、透明性や表面光沢のすぐれたものか
得られない。The invention is basically the same as the method for producing thermoplastic resin sheets or films by water cooling. When the molten thermoplastic film extruded from the T-die is introduced into a slit through which cooling water flows, the water level in the slit must be kept as low as possible or the thermoplastic film will not be cooled. It becomes uniform, and it is difficult to obtain a product with excellent transparency and surface gloss.
ところか、本発明の方法の如く2段以上の多段スリット
を用いる場合には、第1段目のスリットについては水位
を出来る限沙低く設定する必要があるか、第2段目以後
のスリットについては水流が乱れてもシートやフィルム
の品質にあまり影響せず、水位の調節に格別の配慮をす
る必要がないという予想外の知見を得た。However, when using multistage slits of two or more stages as in the method of the present invention, it is necessary to set the water level as low as possible for the first stage slit, or for the slits after the second stage. obtained the unexpected finding that even if the water flow is disturbed, the quality of sheets and films is not significantly affected, and there is no need to take special care in adjusting the water level.
したかつて、本発明においては第1段目のスリットの水
位を可及的に低くするように配慮することが重要である
か、第2段目以後のスリットについて(1このような条
件は特に必要とされない。However, in the present invention, it is important to consider that the water level of the slit in the first stage is as low as possible. Not considered.
不発明の方法を図面により説明すると、T−ダイ1から
溶融状態で押し出された膜状の熱可塑性樹脂2を冷却水
が流れている第1段スリット3に導入する。この第1段
スリットはT−ダイ1の下方に位置する第1水檀4と接
続して形成されてお 1′す、通常、長さは5〜j
[]Qaの大きさであるか、30〜50口が好ましい。The inventive method will be explained with reference to the drawings. A thermoplastic resin film 2 extruded in a molten state from a T-die 1 is introduced into a first stage slit 3 through which cooling water is flowing. This first stage slit is formed to be connected to the first water slit 4 located below the T-die 1, and usually has a length of 5 to 10 cm.
[ ]Qa or 30 to 50 mouths is preferable.
第1水檀4にあってはW人さてする欣状黙可塑性仁宇と
接h工する冷却水グ〕・層5j状・で流1−することl
・・好ましい。また、水色は「りこしたように再入S−
6にイシく丁べ?であり、こ、liGこより肺分汐(、
謄の防止や冷却点の百−化を図ることかできる。、この
水位は一會゛的には7動以下か好ましい。ここでズく位
か10胡となると、得られたシートに沸Mt ”;l
+ ヘイズ斑、カールか牢2生じ、Cヘイズも25〜2
8%となり、好ましくな(八。In the first water dam 4, the cooling water that comes into contact with the cylindrical plasticity of the W person is flowing in the layer 5j shape.
··preferable. Also, the light blue color is “Re-enter S-
Do you want to go to 6? And this, liG, the lung fraction (,
It is possible to prevent damage and increase the number of cooling points. , it is preferable that this water level be below 7 motions. When it comes to 10 or 10 hu here, the obtained sheet has a boiling point of Mt ”;l
+ Haze spots, curl or 2, C haze is also 25-2
8%, which is favorable (8.
冷ヨ1水:コ算1水檀4から臓1段スリット5に涼れて
いるため、−状熱可塑性都鼎(rl、該スリット5を通
忘する−に冷却水によって冷却される。すなわち、膜状
p−:i、βと冷却水の走行方向か市−てあ・す、顆状
樹脂の雨間を市却水が平行にか゛れ、切、キ的し二冷却
さiシる。この冷却水の:fN辷に腸状仙旺′の定行速
度と同じかまたはそれより太てと〕ることか望ましい。Cold water 1 water: Since it is cooled from the water level 4 to the slit 5, it is cooled by the cooling water to the - shaped thermoplastic pipe (rl, forgetting the slit 5). , film-like p-: i, β and the running direction of the cooling water. It is desirable that this cooling water has a speed equal to or thicker than the normal traveling speed of the ligament.
へいで、膜状樹脂は第2段スリット5に送られる。この
群2、族スリット5は篤1段スリット5の下方に位置し
、両者のI’fj5の距離に10〜200て1))迂当
である。範2段スリット5は第2水槽6と接続して形成
されており、その長さ+i=1ミニ1段スリット(@に
5〜100mが適当であり、50〜50膨が好ましい。Then, the resin film is sent to the second stage slit 5. This group 2, group slit 5 is located below the first-stage slit 5, and the distance between them I'fj5 is 10 to 200 (1)). The two-stage slit 5 is connected to the second water tank 6, and its length + i = 1 mini one-stage slit (5 to 100 m is appropriate, and preferably 50 to 50 m).
また、同じような配列で第6段スリット、算5水桶、第
4段スリット、第4水槽などを所望する数だけ設けるこ
とかできる。Furthermore, a desired number of 6th stage slits, 5 water buckets, 4th stage slits, 4th water tank, etc. can be provided in a similar arrangement.
2段目以後のスリットにおいても第1段スリットと同じ
く膜状樹脂に水流を沿わせて冷却するのであり、図示し
た如く、第2水槽以後の水槽には新しく冷却水が追り口
される。しかし、第2水槽以後の水槽にあっては冷却水
の水位については4!!に間頴とする必要はない。すな
わち、この段階では水流が乱れても得られる樹脂シート
やフィルムの品質に影なかないという予想外の事実を本
発明者は知見している。Similarly to the first stage slits, the second and subsequent slits are cooled by flowing water along the resin film, and as shown in the figure, new cooling water is added to the second and subsequent water tanks. However, in the tanks after the second tank, the water level of the cooling water is 4! ! There is no need to make an interval. That is, the present inventor has discovered the unexpected fact that at this stage, even if the water flow is disturbed, the quality of the resulting resin sheet or film is not affected.
上記のようにして冷却水の流れる多段スリットに導入し
て冷却された膜状樹脂は、第1図の如くガイドロール7
.8を経て、さらに水切りロール9を通り、引取シロー
ル10により引取られるか、あるいは第2図の如く水槽
内を通過することなくカイトロール8.水切シロール9
を経て引取シロ−ル1〔1心こより51取ら7しる。な
λ・、カイトロール7G二ついて、−瞳伏樹lIβをス
リット中央に位置丁・。The film-like resin introduced into the multistage slit through which the cooling water flows as described above and cooled is transferred to the guide roll 7 as shown in FIG.
.. 8, then passes through a draining roll 9 and is taken up by a take-up roll 10, or as shown in FIG. 2, the kite roll 8. Mizukiri Shirole 9
After that, I took delivery of Shiroru 1 [1 Kokoyori 51 and 7]. There are two Kite Rolls 7G, and the - Hitomi Fuki lIβ is located in the center of the slit.
こと(−よりカールにも止に有イカてi・るかロール鏡
開をさ牧r−jJげに転ずするためのv、a写ロールと
して柑いることもできる。It can also be used as a v and a copy roll to turn the i-ruka roll into a r-j-j.
不発明に用いる冷却水の温度について(12〜50”C
の範囲力)好ましく、必要に応して縁当た界面活炸誓、
、を添、乳して欣状蓼脂のぬれを艮くすることができる
。図?、11は下前−水槽、12は71で位調節板、1
己(ζ溢流板、14は冷却器、15は了゛ンブである。Regarding the temperature of the cooling water used in the invention (12 to 50"C
range of force) preferably, and if necessary, an interfacial activation oath,
, can be added to milk to make it more wet. figure? , 11 is the lower front - water tank, 12 is the 71 position adjustment plate, 1
14 is a cooler, and 15 is an overflow plate.
上記の留萌では多段スリットによる膜状樹脂の冷却を本
市タイプのもので行なう場合を示したか、スワン) 9
1 tnLタイプのものでも同様に行なうことかできる
。In Rumoi above, the cooling of film-like resin using multi-stage slits was shown using the Motoichi type (Swan) 9
1 It is possible to do the same with the tnL type.
本発明の、改良された水冷法によれは、暗黒性の熱可塑
性研脂を原料としてシートやフィルムを製造する場合で
も、未配向で透明性1表面光沢に丁ぐflだシート等を
得ることかできる。しかも、得られるシート等に厚みム
ラ、シワ、カールなどかなく、均一4Gこすぐれている
。また、本発明の方法は1i3 m/mi、へ以上の高
速成形によってシート等を偽ることができ、かつ冷却コ
スト等か低いなどの特色を有している。The improved water-cooling method of the present invention makes it possible to obtain unoriented sheets with transparency and surface gloss even when producing sheets or films using dark thermoplastic abrasive resin as a raw material. I can do it. Moreover, the obtained sheet etc. has no uneven thickness, wrinkles, curls, etc., and has a uniform 4G strength. Further, the method of the present invention has features such as being able to form sheets etc. by high-speed molding of 1i3 m/mi or more and having low cooling costs.
本発明の方法によって得られるシートやフィルムに、上
記の如くすぐれた性質を有しているため、食品、医薬品
などの包装中などに好適である。また、圧空成形、ロー
ル圧延成形、延伸成形などC固相成形相の原反と・して
用いることもできる。Since the sheets and films obtained by the method of the present invention have the above-mentioned excellent properties, they are suitable for packaging foods, medicines, etc. Moreover, it can also be used as a raw fabric for C solid phase forming phase such as air pressure forming, roll rolling forming, and stretching forming.
l入に、本発明を実施例により説明する。The present invention will now be described by way of examples.
実施例1〜6
ポリプロピレン(密度0.91 flcdt 、 メ
ルトインデックスzOLi−/10分)を樹脂温度28
0°CでT−ダイ押出装置(押出機60型/、L/D=
28.ダイ巾550wn 、 ダイリップ開度1 t
m )を用いて押出した。押出された溶融樹脂膜を冷却
水(水温16℃)の流れる第1段スリット (巾2日、
長さ45 tan )に導入した後、さらに第1段スリ
ットの下方に50園の間隔をもって設けられた冷却水(
水温20°C)の流れる第2段スリット(巾4 m 、
長さ10m)に導入して冷却した後、第2図の如く (
但し、実1秒i14.5を除く)引取りロールにて引取
りポリプロピレンシートを得た。実施例4.54mつい
ては実刑例2つ条件に備考欄に示した条件を付加して行
なった。操作条件と得られたシートの物性を第1表に示
す。Examples 1 to 6 Polypropylene (density 0.91 flcdt, melt index zOLi-/10 min) was heated to a resin temperature of 28
T-die extrusion device (extruder type 60/, L/D=
28. Die width 550wn, die lip opening 1t
m). The extruded molten resin film is passed through the first stage slit (width 2 days,
After introducing the cooling water (45 tan in length), cooling water (
The second stage slit (4 m wide,
After cooling it, it was introduced into a tube with a length of 10 m) as shown in Fig. 2 (
However, a polypropylene sheet was taken off using a take-off roll (excluding actual 1 second i14.5). Example 4.54m was conducted by adding the conditions shown in the notes column to the two conditions of the prison sentence. The operating conditions and physical properties of the obtained sheet are shown in Table 1.
比較例1
実施例1において瀉2段スリットを用いなかったこと以
外は実施例1に準じて行なった一結果をお1表に示す。Comparative Example 1 Table 1 shows the results of the same procedure as in Example 1 except that the two-stage slit was not used.
比較例2
実施例1と同じ原料、押出条件で溶軸状態の膜状樹脂を
押出し、1面ロール(40’C)上にエアーナイフで空
気を吹付けて冷却することによってホリプロピレンシー
トを得た。結果を第1表に示す0Comparative Example 2 A film-like resin in a molten axis state was extruded using the same raw materials and extrusion conditions as in Example 1, and a holypropylene sheet was obtained by cooling it by blowing air with an air knife onto a single-sided roll (40'C). Ta. The results are shown in Table 10
渉1区ふよひか2図に本発明の方圧を7軸する装面の耕
樵を示す説明図であし。
1 T−タイ、2・呼畝杖ト可千(シゴ、5−竺1段ス
1ノント、4・・・$1水傅、5−・72段スリット、
6・・淫2水や
特許出口′人 出光石を化学ケ式会社代 理 人
弁理士 欠株1)腸 部第1図
第2図Figure 2 is an explanatory diagram showing a tiller equipped with seven axes of horizontal pressure according to the present invention. 1 T-tie, 2. call ridge cane tokasen (shigo, 5-1 step sui 1 nont, 4...$1 suiden, 5-.72 step slit,
6. Inn 2 Water and Patent Exit'person Idemitsu Seki Chemical Company Representative Person
Patent Attorney Missing Stock 1) Intestine Figure 1 Figure 2
Claims (1)
を冷却水の流れる多段スリットに導入することを特叡と
する熱可塑性樹脂シートまたはフィルムの製造方伝A method for producing a thermoplastic resin sheet or film, in which a film-like thermoplastic resin inserted in a molten state from a T-tie is introduced into multi-stage slits through which cooling water flows.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57086475A JPS58203018A (en) | 1982-05-24 | 1982-05-24 | Manufacture of thermoplastic resin sheet or film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57086475A JPS58203018A (en) | 1982-05-24 | 1982-05-24 | Manufacture of thermoplastic resin sheet or film |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61180026A Division JPS6242822A (en) | 1986-08-01 | 1986-08-01 | Manufacture of thermoplastic resin sheet or film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58203018A true JPS58203018A (en) | 1983-11-26 |
JPS6210816B2 JPS6210816B2 (en) | 1987-03-09 |
Family
ID=13887987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57086475A Granted JPS58203018A (en) | 1982-05-24 | 1982-05-24 | Manufacture of thermoplastic resin sheet or film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58203018A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236719A (en) * | 1984-05-11 | 1985-11-25 | Idemitsu Petrochem Co Ltd | Cooler for thermoplastic resin |
JPS61123512A (en) * | 1984-11-06 | 1986-06-11 | Idemitsu Petrochem Co Ltd | Polypropylene group resin sheet for drum vacuum forming |
JPS61144344A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Co-extruded polypropylene group multilayer material and manufacture thereof |
JPS61144343A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Co-extruded polypropylene group multilayer material and manufacture thereof |
JPS61144345A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Polypropylene group laminated sheet |
JPS61152418A (en) * | 1984-12-26 | 1986-07-11 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheet |
JPS62148251A (en) * | 1985-12-23 | 1987-07-02 | 出光石油化学株式会社 | Manufacture of vessels |
JPS62148235A (en) * | 1985-12-23 | 1987-07-02 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheet |
JPS62152716A (en) * | 1985-12-26 | 1987-07-07 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheets |
JPS62283142A (en) * | 1986-05-30 | 1987-12-09 | Idemitsu Petrochem Co Ltd | Radiation-resistant polypropylene resin sheet |
JPS6456523A (en) * | 1987-08-28 | 1989-03-03 | Idemitsu Petrochemical Co | Molding method of thermoplastic resin sheet |
JPH01171834A (en) * | 1987-12-28 | 1989-07-06 | Idemitsu Petrochem Co Ltd | Manufacture of polypropylene resin sheet |
JPH01171833A (en) * | 1987-12-28 | 1989-07-06 | Idemitsu Petrochem Co Ltd | Manufacture of polypropylene resin sheet |
US4863653A (en) * | 1988-02-25 | 1989-09-05 | Idemitsu Petrochemical Co., Ltd. | Process of producing thermoplastic resin sheet and equipment therefor |
JPH0220320A (en) * | 1988-07-09 | 1990-01-23 | Idemitsu Petrochem Co Ltd | Production of polypropylene resin sheet and resin sheet obtained thereby |
-
1982
- 1982-05-24 JP JP57086475A patent/JPS58203018A/en active Granted
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0133335B2 (en) * | 1984-05-11 | 1989-07-12 | Idemitsu Petrochemical Co | |
JPS60236719A (en) * | 1984-05-11 | 1985-11-25 | Idemitsu Petrochem Co Ltd | Cooler for thermoplastic resin |
JPS61123512A (en) * | 1984-11-06 | 1986-06-11 | Idemitsu Petrochem Co Ltd | Polypropylene group resin sheet for drum vacuum forming |
JPS61144344A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Co-extruded polypropylene group multilayer material and manufacture thereof |
JPS61144343A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Co-extruded polypropylene group multilayer material and manufacture thereof |
JPS61144345A (en) * | 1984-12-19 | 1986-07-02 | 出光石油化学株式会社 | Polypropylene group laminated sheet |
JPS61152418A (en) * | 1984-12-26 | 1986-07-11 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheet |
JPH0150574B2 (en) * | 1984-12-26 | 1989-10-30 | Idemitsu Petrochemical Co | |
JPS62148251A (en) * | 1985-12-23 | 1987-07-02 | 出光石油化学株式会社 | Manufacture of vessels |
JPS62148235A (en) * | 1985-12-23 | 1987-07-02 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheet |
JPS62152716A (en) * | 1985-12-26 | 1987-07-07 | Idemitsu Petrochem Co Ltd | Manufacture of thermoplastic resin sheets |
JPH0262377B2 (en) * | 1985-12-26 | 1990-12-25 | Idemitsu Petrochemical Co | |
JPS62283142A (en) * | 1986-05-30 | 1987-12-09 | Idemitsu Petrochem Co Ltd | Radiation-resistant polypropylene resin sheet |
JPS6456523A (en) * | 1987-08-28 | 1989-03-03 | Idemitsu Petrochemical Co | Molding method of thermoplastic resin sheet |
JPH01171834A (en) * | 1987-12-28 | 1989-07-06 | Idemitsu Petrochem Co Ltd | Manufacture of polypropylene resin sheet |
JPH01171833A (en) * | 1987-12-28 | 1989-07-06 | Idemitsu Petrochem Co Ltd | Manufacture of polypropylene resin sheet |
US4863653A (en) * | 1988-02-25 | 1989-09-05 | Idemitsu Petrochemical Co., Ltd. | Process of producing thermoplastic resin sheet and equipment therefor |
JPH0220320A (en) * | 1988-07-09 | 1990-01-23 | Idemitsu Petrochem Co Ltd | Production of polypropylene resin sheet and resin sheet obtained thereby |
Also Published As
Publication number | Publication date |
---|---|
JPS6210816B2 (en) | 1987-03-09 |
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