JPH071557A - Extrusion molding synthetic resin sheet - Google Patents
Extrusion molding synthetic resin sheetInfo
- Publication number
- JPH071557A JPH071557A JP5149093A JP14909393A JPH071557A JP H071557 A JPH071557 A JP H071557A JP 5149093 A JP5149093 A JP 5149093A JP 14909393 A JP14909393 A JP 14909393A JP H071557 A JPH071557 A JP H071557A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- thickness
- resin
- roll
- mold
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は合成樹脂シ−トの押出成
形方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion molding method for synthetic resin sheets.
【０００２】[0002]
【従来の技術】従来、合成樹脂シ−トを押出成形法によ
り製造する場合、図２に示すように、押出機１’にシ−
ト成形用金型２’を連結し、この金型か２’ら押出され
てくるシ−ト状樹脂ａ’をポリシングロ−ル３’，…に
通過させて艶出しを行い、更に、走行ロ−ル４’，…に
通過させて空冷により自然冷却して、引取りロ−ル５’
の引取りに耐え得る固さにまで固化させ、次いで、引取
りロ−ル５’で引取り、而るのち、カッタ−６’により
定尺切断している。2. Description of the Related Art Conventionally, when a synthetic resin sheet is manufactured by an extrusion molding method, as shown in FIG.
The mold 2'for molding is connected, and the sheet-shaped resin a'extruded from this mold or 2'is passed through the polishing rolls 3 ', ... It is passed through the rolls 4 ', ... and naturally cooled by air cooling, and then the take-up roll 5'.
It is solidified to such a hardness that it can withstand the take-up, and then taken up by a take-up roll 5 ', and thereafter cut to a fixed length by a cutter 6'.
【０００３】上記シ−ト成形用金型には、通常、図３に
示すように、樹脂流入孔２１’とマニホ−ルド２２’を
有する上部金型本体２ａ’と下部金型本体２ｂ’との先
端部内面に上リップ２３ａ'と下リップ２３ｂ'とをそれ
ぞれボルト２４’により締結し、これらの上下リップで
樹脂流路の平行部（ランド）２５’を形成した、所謂、
マニホ−ルドダイが使用されている。Generally, the sheet molding die has an upper die body 2a 'and a lower die body 2b' having a resin inflow hole 21 'and a manifold 22', as shown in FIG. An upper lip 23a ′ and a lower lip 23b ′ are fastened to the inner surface of the tip end of each of them by bolts 24 ′, and a parallel portion (land) 25 ′ of the resin flow path is formed by these upper and lower lips.
Manifold dies are used.
【０００４】上記ポリシングロ−ル３’においては、艶
出しに適切な温度とされ、金型出口での樹脂温度に較べ
てかなり低くされているいる。例えば、塩化ビニル樹脂
の場合のポリシングロ−ル温度は、金型出口の樹脂温度
約１９０℃に対し８０℃とされている。In the above polishing roll 3 ', a temperature suitable for polishing is set, and is considerably lower than the resin temperature at the die exit. For example, in the case of vinyl chloride resin, the polishing roll temperature is set to 80 ° C. while the resin temperature at the die outlet is about 190 ° C.
【０００５】ところで、合成樹脂シ−トにおいては、用
途に応じ、厚みの異なる各種のシ−トが必要とされる。
而るに、上記合成樹脂シ−トの押出成形法におけるシ−
ト厚み変更の従来の主たる手段は、金型２’の樹脂流路
平行部２５’のクリアランスを変更することにある。By the way, in the synthetic resin sheet, various sheets having different thickness are required depending on the application.
Therefore, the sheet in the extrusion molding method of the above synthetic resin sheet is used.
The conventional main means for changing the thickness is to change the clearance of the resin flow path parallel portion 25 'of the mold 2'.
【０００６】上記したように、ポリシングロ−ル３’の
温度は金型内の樹脂温度に較べ相当に低く、金型２’か
らのシ−ト状樹脂をポリシングロ−ル３’により比較的
高い減厚比で減厚すると、ポリシングロ−ル３’に作用
するシ−ト状樹脂の圧縮反力が大きく、ポリシングロ−
ル３’の撓みが著しくなり、シ−ト状樹脂の圧縮歪の不
均一化、ロ−ルの不均一接触によるシ−ト状樹脂の冷却
の不均一化が招来され、更に、ロ−ルでの樹脂のバンク
形成状態が一定せず、歪の不均一化、偏肉が一層に誘発
されて、製品シ−トの顕著な反りの発生、偏肉が顕著と
なる。従って、ポリシングロ−ルのギャップ調整は、シ
−ト厚み変更の補助的手段としてしか使用できない。As described above, the temperature of the polishing roll 3'is considerably lower than the temperature of the resin in the mold, and the sheet-like resin from the mold 2'is relatively moved by the polishing roll 3 '. When the thickness is reduced with a high thickness reduction ratio, the compression reaction force of the sheet-like resin acting on the polishing roll 3'is large and the polishing roll 3 '
The deflection of the roll 3'becomes remarkable, the compression strain of the sheet-shaped resin becomes non-uniform, and the cooling of the sheet-shaped resin becomes non-uniform due to the non-uniform contact of the rolls. In this case, the resin bank formation state is not constant, and the unevenness of strain and uneven thickness are further induced, and the warp and uneven thickness of the product sheet become remarkable. Therefore, the gap adjustment of the polishing roll can be used only as an auxiliary means for changing the sheet thickness.
【０００７】而して、従来、押出成形シ−トの厚み変更
には、マニホ−ルドダイ先端のリップを交換し、リップ
間クリアランスを製品厚みに対応して、所定値に設定す
ることが不可欠であり、通常、製品シ−トの厚み変更は
次の作業手順で行われている。すなわち。まず、生産
ラインの運行を中断し、押出機を停止する、押出機か
ら金型を取外し、所定の金型解体場所に移動させる、
金型本体を上下に解体分解し、付着樹脂を除去してクリ
−ニングを行う、各リップと各金型本体とのボルト締
結を解除して、リップを金型本体から取り外す、次の
各リップを各金型本体にボルトで仮締結し、次いで、こ
れらの上下の金型本体をボルトで締結する、上下リッ
プ間のクリアランスを調整し、そのクリアランスを設定
値にしたのちに、各リップを各金型本体に最終的に締結
する、金型を押出機に連結して、生産再開の準備を行
う、押出機を再駆動し、生産を再開する、等の作業手
順で行われている。Thus, conventionally, in order to change the thickness of the extrusion molding sheet, it is indispensable to replace the lip at the tip of the manifold die and set the clearance between the lips to a predetermined value corresponding to the product thickness. Yes, the thickness of the product sheet is usually changed by the following work procedure. Ie. First, the operation of the production line is interrupted, the extruder is stopped, the mold is removed from the extruder and moved to a predetermined mold disassembly location,
Disassemble and disassemble the mold body up and down, remove the attached resin for cleaning, release the bolt fastening between each lip and each mold body, remove the lip from the mold body, next each lip Temporarily fasten each mold body with bolts, then fasten these upper and lower mold bodies with bolts, adjust the clearance between the upper and lower lips, and after setting the clearance to the set value, The work procedure is such as final fastening to the mold body, connecting the mold to the extruder to prepare for restarting production, re-driving the extruder, and restarting production.
【０００８】[0008]
【発明が解決しようとする課題】上記リップの金型本体
へのボルト締結個数は数１０個にも達し、リップのボル
ト孔の加工上の多少の位置ずれを許容するために、リッ
プのボルト孔がボルト径よりもやや大きくされており、
従って、各リップを各金型本体にボルトで仮締結し、こ
れらの上下の金型本体をボルトで締結したのち、上記
に示す通り、各リップを上下に微調整しリップ間のクリ
アランスを所定クリアランスに設定値して、各リップを
各金型本体に最終的に締結することが必要となる。The number of bolts to be fastened to the mold body of the lip reaches several tens, and in order to allow some displacement of the lip bolt hole due to processing, the lip bolt hole is required. Is slightly larger than the bolt diameter,
Therefore, after each lip is temporarily fastened to each mold body with bolts and these upper and lower mold bodies are fastened with bolts, as shown above, each lip is finely adjusted up and down and the clearance between the lips is set to a predetermined clearance. It is necessary to finally fasten each lip to each mold body with a set value of.
【０００９】しかしながら、このように上下リップ間の
クリアランスを所定値に保持しつつ各リップを各金型本
体にボルト締結することは、容易ではなく熟練を必要と
し、しかも、リップの巾が広く、ボルト締結の個数が数
１０箇（通常、約箇）にも達するために、長時間を必要
とし、過大な生産性の低下が余儀なくされている。However, bolting each lip to each mold body while maintaining the clearance between the upper and lower lips at a predetermined value is not easy and requires skill, and the width of the lip is wide. Since the number of bolts to be fastened reaches several tens (usually, about several), it takes a long time and the productivity is unavoidably lowered.
【００１０】本発明の目的は、合成樹脂シ−トの押出成
形において、製品のシ−ト厚みを生産能率を低下させる
ことなく変更できる合成樹脂シ−トの押出成形方法を提
供することに有る。It is an object of the present invention to provide a synthetic resin sheet extrusion molding method capable of changing the sheet thickness of a product in the extrusion molding of a synthetic resin sheet without lowering the production efficiency. .
【００１１】[0011]
【課題を解決するための手段】本発明の合成樹脂シ−ト
の押出成形方法は、金型から押し出されてくるシ−ト状
樹脂をポリシングロ−ルに通過させ、次いで、走行ロ−
ルによる移送中に最終的に冷却する合成樹脂シ−トの成
形方法において、金型からの合成樹脂シ−トを、加熱し
た厚み調整ロ−ルで所定の厚みに、しかも樹脂温度を金
型出口での樹脂温度にほぼ等しくして減厚し、この減厚
シ−ト状樹脂をポリシングロ−ルに通過させることを特
徴とする構成である。According to the extrusion molding method of a synthetic resin sheet of the present invention, a sheet resin extruded from a mold is passed through a polishing roll, and then a running roll is used.
In a method of molding a synthetic resin sheet, which is finally cooled during transfer by a roll, the synthetic resin sheet from the mold is heated to a predetermined thickness by a thickness adjusting roll, and the resin temperature is kept at the mold. It is characterized in that the temperature of the resin at the outlet is made substantially equal to that of the resin to reduce the thickness thereof, and the resin of the reduced sheet thickness is passed through a polishing roll.
【００１２】[0012]
【作用】金型からのシ−ト状樹脂が、高温の厚み調整ロ
−ルで充分な熱軟化状態にて減厚されるから、厚み調整
ロ−ルの撓みをよく抑制でき、厚み調整ロ−ルのギャッ
プを充分一様に保持でき、シ−ト状樹脂を充分に一様な
圧縮歪、加温状態で減厚できる。しかも、厚み調整ロ−
ルを出ていくシ−ト状樹脂の樹脂温度を金型出口での樹
脂温度とほぼ等しくできるから、金型からのシ−ト状樹
脂を直接ポリシングロ−ルに通過させる場合と同様に、
良好に艶出しできる。The sheet-like resin from the mold is reduced in thickness by a high-temperature thickness adjusting roll in a sufficiently softened state, so that the thickness adjusting roll can be sufficiently prevented from bending and the thickness adjusting roll can be well suppressed. -The gap of the resin can be kept sufficiently uniform, and the sheet-shaped resin can be reduced in thickness under sufficiently uniform compression strain and heating. Moreover, the thickness adjustment roll
Since the resin temperature of the sheet-shaped resin that exits the mold can be made substantially equal to the resin temperature at the mold outlet, similar to the case where the sheet-shaped resin from the mold is directly passed through the polishing roll,
You can polish it well.
【００１３】製品シ−トの厚み変更は、厚み調整ロ−ル
の減厚比を変更することにより短時間で行い得、生産効
率を低下させることなく、製品シ−トの厚み変更を行う
ことができる。The thickness of the product sheet can be changed in a short time by changing the thickness reduction ratio of the thickness adjusting roll, and the thickness of the product sheet can be changed without lowering the production efficiency. You can
【００１４】[0014]
【実施例】以下、図面により本発明の実施例を説明す
る。図１は、本発明において使用する合成樹脂シ−トの
押出成形装置を示している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a synthetic resin sheet extrusion molding apparatus used in the present invention.
【００１５】図１において、１は押出機である。２はシ
−ト成形用金型、例えば、マニホ−ルドダイである。
３，…はポリシングロ−ルである。４，…は走行ロ−
ル、５は引取りロ−ル、６はカッタ−である。７は厚み
調整ロ−ルであり、ロ−ル間ギャツプを調整可能として
ある。In FIG. 1, 1 is an extruder. Reference numeral 2 is a sheet molding die, for example, a manifold die.
3, ... are polishing rolls. 4, ... is a running lo
Reference numeral 5 is a take-up roll, and 6 is a cutter. Reference numeral 7 denotes a thickness adjusting roll, which can adjust the gap between the rolls.
【００１６】本発明により、合成樹脂シ−トを押出成形
するには、厚み調整ロ−ル７の温度を金型出口での樹脂
接触面温度にほぼ等しい温度に保持し、金型７から押し
出されてくるシ−ト状樹脂ａ1をこの高温の厚み調整ロ
−ル７に通過させて所定の減厚比で減厚し、この減厚シ
−ト状樹脂ａ2をポリシングロ−ル３に送り、以後は常
法に従い、シ−ト状樹脂をポリシングロ−ル３に通過さ
せて艶出しを行い、更に、走行ロ−ル４に通過させて空
冷により自然冷却させ、引取りロ−ル５の引取りに耐え
得る固さにまで固化させ、次いで、引取りロ−ル５で引
取り、而るのち、カッタ−６により定尺切断していく。According to the present invention, in order to extrude a synthetic resin sheet, the temperature of the thickness adjusting roll 7 is kept at a temperature substantially equal to the temperature of the resin contact surface at the die outlet, and the sheet is extruded from the die 7. The incoming sheet-shaped resin a 1 is passed through this high-temperature thickness adjusting roll 7 to reduce the thickness at a predetermined thickness reduction ratio, and the reduced thickness sheet-shaped resin a 2 is polished into a polishing roll 3 Then, according to a conventional method, the sheet-like resin is passed through the polishing roll 3 for polishing, and further passed through the running roll 4 to be naturally cooled by air cooling, and then the take-up roll. It is solidified to such a hardness that it can withstand the take-up of the roll 5, then taken up by the take-up roll 5, and then cut to a fixed length by a cutter 6.
【００１７】この場合、金型２からのシ−ト状樹脂ａ1
を厚み調整ロ−ル７により高い減厚比で減厚しても、厚
み調整ロ−ル７の高温度のために、厚み調整ロ−ル通過
時の樹脂を金型出口での樹脂に近い熱軟化状態にでき、
厚み調整ロ−ル７に作用するシ−ト状樹脂の圧縮反力を
小さくして、厚み調整ロ−ル７の撓みをよく防止できる
から、シ−ト状樹脂ａ1を均一な圧縮で減厚でき、温度
の不均一化もよく排除できる。そして、厚み調整ロ−ル
７から出ていくシ−ト状樹脂ａ2の樹脂温度を金型２を
出た直後のシ−ト状樹脂ａ1の樹脂温度にほぼ等しくで
きるので、厚み調整ロ−ル７からポリシングロ−ル３に
シ−ト状樹脂を、あたかも、金型２から吐き出されたよ
うな状態で移送できる。従って、厚み調整ロ−ル７によ
る減厚にもかかわらず、ポリシングロ−ル３による艶出
しを従来と同様、良好に行うことができる。In this case, the sheet-like resin a 1 from the mold 2
Even if the thickness is reduced by the thickness adjustment roll 7 at a high reduction ratio, due to the high temperature of the thickness adjustment roll 7, the resin when passing through the thickness adjustment roll is close to the resin at the die outlet. Can be in a heat softened state,
Since the compression reaction force of the sheet-shaped resin acting on the thickness adjusting roll 7 can be reduced to prevent the thickness adjusting roll 7 from flexing well, the sheet-shaped resin a 1 can be uniformly compressed and reduced. The thickness can be increased and the non-uniformity of temperature can be eliminated well. Since the resin temperature of the sheet-shaped resin a 2 exiting from the thickness adjusting roll 7 can be made substantially equal to the resin temperature of the sheet-like resin a 1 immediately after leaving the mold 2, the thickness adjusting roll 7 can be adjusted. The sheet-shaped resin can be transferred from the roll 7 to the polishing roll 3 as if it were discharged from the mold 2. Therefore, despite the thickness reduction by the thickness adjusting roll 7, the polishing by the polishing roll 3 can be performed satisfactorily as in the conventional case.
【００１８】本発明により、最大厚み（ｔn）〜最小厚
み（t1）の範囲にある合成樹脂シ−トを製造するには、
厚み調整ロ−ルの減厚比を零にしたときの製品シ−ト厚
みをｔnとするように、マニホ−ルドダイのリップ間ク
リアランスを設定し、製品シ−ト厚みが小となるに従
い、厚み調整ロ−ルの減厚比を高くしていく。[0018] The present invention, synthetic resin sheet is in the range of the maximum thickness (tn) ~ minimum thickness (t 1) - in the production of metropolitan,
The clearance between the lips of the manifold die is set so that the product sheet thickness when the reduction ratio of the thickness adjusting roll is zero is tn, and the thickness decreases as the product sheet thickness decreases. Increase the thickness reduction ratio of the adjusting roll.
【００１９】厚み調整ロ−ルの減厚比が零の場合のマニ
ホ−ルドダイのリップ間クリアランスと製品厚みとの関
係は、金型直後でのバラス効果、ポリシングロ−ルのギ
ャップ、線速、樹脂の種類並びに温度等に左右される
が、最大厚み（ｔn）である１５ｍｍ厚みの塩化ビニル
樹脂シ−トを製造する場合、金型出口での樹脂接触面温
度が１８８℃、金型を出た直後でのシ−ト状樹脂の表面
温度が１９０℃、ポリシングロ−ル温度が８０℃のもと
で、リップ間クリアランスが１６．０〜１６．５ｍｍ、
ポリシングロ−ルのギャツプが１４．９ｍｍに設定され
る。When the reduction ratio of the thickness adjusting roll is zero, the relationship between the clearance between the lips of the manifold die and the product thickness is as follows: the ballast effect immediately after the die, the gap of the polishing roll, the linear velocity, Although it depends on the type and temperature of the resin, when a vinyl chloride resin sheet with a maximum thickness (tn) of 15 mm is manufactured, the temperature of the resin contact surface at the mold outlet is 188 ° C and the mold exits. Immediately after the surface temperature of the sheet-like resin is 190 ° C. and the polishing roll temperature is 80 ° C., the clearance between lips is 16.0 to 16.5 mm,
The gap of the polishing roll is set to 14.9 mm.
【００２０】そして、本発明により、例えば、製品厚さ
５ｍｍのシ−トを製造するには、厚み調整ロ−ルの温度
が１９０℃、そのギャップが５．２ｍｍとされ、ポリシ
ングロ−ルのギャップが４．９ｍｍとされる。According to the present invention, for example, in order to manufacture a sheet having a product thickness of 5 mm, the temperature of the thickness adjusting roll is 190 ° C. and the gap thereof is 5.2 mm, and the polishing roll is The gap is set to 4.9 mm.
【００２１】この場合、厚み調整ロ−ル通過直後のシ−
ト状樹脂の表面温度は１８８℃となり、金型を出た直後
でのシ−ト状樹脂の表面温度が１９０℃とほぼ等しいか
ら、金型からのシ−ト状樹脂を直接ポリシングロ−ルに
通過させる場合と同様に、良好に艶出しできる。また、
厚み調整ロ−ル通過直後のシ−ト状樹脂の厚みは５．３
ｍｍとなり、従って、ポリシングロ−ルによる減厚比
は、０．０８に過ぎず、ポリシングロ−ルでのシ−ト状
樹脂の一様圧縮、一様冷却上、何らの問題もない。In this case, the seal immediately after passing through the thickness adjusting roll
The surface temperature of the sheet-shaped resin is 188 ° C., and the surface temperature of the sheet-shaped resin immediately after leaving the mold is almost equal to 190 ° C. Therefore, the sheet-shaped resin from the mold is directly polished. As in the case of passing through, it can be satisfactorily polished. Also,
The thickness of the sheet-like resin immediately after passing through the thickness adjusting roll is 5.3.
Therefore, the thickness reduction ratio by the polishing roll is only 0.08, and there is no problem in uniform compression and uniform cooling of the sheet-shaped resin by the polishing roll.
【００２２】本発明において、厚み調整ロ−ルの減厚比
の変更は、例えば、ロ−ル軸を油圧シリンダ−で支持
し、油圧シリンダ−の操作でロ−ルギャップを変更する
ことにより行うことができ、シ−ト状樹脂を走行させつ
つ製品シ−ト厚みを変更することも可能である。In the present invention, the thickness reduction ratio of the thickness adjusting roll is changed by, for example, supporting the roll shaft by a hydraulic cylinder and changing the roll gap by operating the hydraulic cylinder. It is also possible to change the thickness of the product sheet while running the sheet-shaped resin.
【００２３】なお、本発明において、厚み調整ロ−ルの
温度は金型出口の樹脂接触面（樹脂通過面）温度に対
し、±１０℃の範囲内に保持すればよく、この温度範囲
内での厚み調整ロ−ルの温度調整、金型温度の調整、線
速、ポリシングロ−ルのギャプ調整を厚み変更の補助的
手段として使用することもできる。In the present invention, the temperature of the thickness adjusting roll may be kept within a range of ± 10 ° C. with respect to the temperature of the resin contact surface (resin passing surface) of the die outlet, within this temperature range. The thickness adjustment roll temperature adjustment, mold temperature adjustment, linear velocity, and polishing roll gap adjustment can also be used as auxiliary means for changing the thickness.
【００２４】[0024]
【発明の効果】本発明の合成樹脂シ−トの押出成形方法
は上述した通りの構成であり、金型とポリシングロ−ル
との間に設置した加熱厚み調整ロ−ルの減厚比を変える
ことにより、製品シ−トの厚みを変更できるから、その
変更作業を迅速に行うことができ、当初の生産速度を保
持しつ製品シ−トの厚みを変更できる。また、厚み調整
ロ−ルからポリシングロ−ルへのシ−ト状樹脂の移送
を、金型からポリシングロ−ルに直接移送する場合とほ
ぼ同じ温度条件で行うことができるから、ポリシングロ
−ルによる艶出しを良好に行うことができる。更にま
た、シ−ト厚みの変更を、作業者の直接の手作業に依存
することなく、厚み調整ロ−ルのギャップ調整で行って
いるから、再現性がよく、製品の厚み寸法の安定性を保
障できる。The extrusion molding method of the synthetic resin sheet of the present invention has the above-mentioned constitution, and the thickness reduction ratio of the heating thickness adjusting roll installed between the mold and the polishing roll is adjusted. Since the thickness of the product sheet can be changed by changing the thickness, the changing operation can be performed quickly, and the thickness of the product sheet can be changed while maintaining the initial production speed. Further, the sheet-shaped resin can be transferred from the thickness adjusting roll to the polishing roll under substantially the same temperature conditions as in the case where the resin is directly transferred from the mold to the polishing roll. It is possible to satisfactorily polish with luster. Furthermore, since the sheet thickness is changed by adjusting the gap of the thickness adjusting roll without depending on the manual work of the operator, the reproducibility is good and the thickness dimension of the product is stable. Can be guaranteed.
【図１】本発明において使用する合成樹脂シ−トの押出
成形装置を示す説明図である。FIG. 1 is an explanatory view showing an extrusion molding apparatus for a synthetic resin sheet used in the present invention.
【図２】従来例において使用されている合成樹脂シ−ト
の押出成形装置を示す説明図である。FIG. 2 is an explanatory view showing an extrusion molding apparatus for a synthetic resin sheet used in a conventional example.
【図３】合成樹脂シ−トの押出成形に使用されている公
知の金型を示す説明図である。FIG. 3 is an explanatory view showing a known mold used for extrusion molding of a synthetic resin sheet.
２ 金型 ａ1 シ−ト状樹脂 ａ2 シ−ト状樹脂 ３ ポリシングロ−ル ４ 走行ロ−ル ７ 厚み調整ロ−ル2 Mold a 1 sheet-like resin a 2 sheet-like resin 3 Polishing roll 4 Traveling roll 7 Thickness adjusting roll
Claims (1)
ポリシングロ−ルに通過させ、次いで、走行ロ−ルによ
る移送中に最終的に冷却する合成樹脂シ−トの成形方法
において、金型からの合成樹脂シ−トを、加熱した厚み
調整ロ−ルで所定の厚みに、しかも樹脂温度を金型出口
での樹脂温度にほぼ等しくして減厚し、この減厚シ−ト
状樹脂をポリシングロ−ルに通過させることを特徴とす
る合成樹脂シ−トの押出成形方法。1. A method for molding a synthetic resin sheet, wherein a sheet-shaped resin extruded from a mold is passed through a polishing roll, and then finally cooled during transfer by a traveling roll. The thickness of the synthetic resin sheet from the mold is reduced by heating the thickness adjusting roll to a predetermined thickness, and the resin temperature is made approximately equal to the resin temperature at the mold outlet. An extrusion molding method for a synthetic resin sheet, which comprises passing a resinous resin through a polishing roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5149093A JPH071557A (en) | 1993-06-21 | 1993-06-21 | Extrusion molding synthetic resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5149093A JPH071557A (en) | 1993-06-21 | 1993-06-21 | Extrusion molding synthetic resin sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH071557A true JPH071557A (en) | 1995-01-06 |
Family
ID=15467548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5149093A Pending JPH071557A (en) | 1993-06-21 | 1993-06-21 | Extrusion molding synthetic resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100416082B1 (en) * | 1999-10-18 | 2004-01-31 | 삼성에스디아이 주식회사 | Plasma display panel |
-
1993
- 1993-06-21 JP JP5149093A patent/JPH071557A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100416082B1 (en) * | 1999-10-18 | 2004-01-31 | 삼성에스디아이 주식회사 | Plasma display panel |
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