JPH07251435A - Method and device for manufacture of multiple layer sheet-shaped material - Google Patents
Method and device for manufacture of multiple layer sheet-shaped materialInfo
- Publication number
- JPH07251435A JPH07251435A JP6046085A JP4608594A JPH07251435A JP H07251435 A JPH07251435 A JP H07251435A JP 6046085 A JP6046085 A JP 6046085A JP 4608594 A JP4608594 A JP 4608594A JP H07251435 A JPH07251435 A JP H07251435A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- die
- layers
- layer
- sheet
- 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
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Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は複数の樹脂が数百から数
千層積層されてなる多重層シート状物の製造方法及びそ
の製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a multi-layered sheet-like product in which a plurality of resins are laminated in several hundred to several thousand layers.
【０００２】[0002]
【従来の技術】複数の種類の樹脂が数百層から数千層の
薄膜に積層されてなる多重層シート状物の製造方法とし
て、例えば米国特許第５，２０２，０７４号明細書等に
は層状の樹脂層を縦に分割し、それを重ねて拡幅する方
法が開示され、また例えばＳＰＥ Ｊｏｕｒｎａｌ １
９９３ ｖｏ１．２９ ｐ．３８〜４７等には同心の内
外筒の間隙に放射状に分割された樹脂を供給され、内筒
又は外筒を回転させることにより多層に形成する方法が
開示されている。2. Description of the Related Art As a method for producing a multi-layered sheet-like product in which a plurality of kinds of resins are laminated in a thin film of hundreds to thousands of layers, for example, U.S. Pat. No. 5,202,074 is disclosed. A method is disclosed in which a layered resin layer is vertically divided, and the layers are overlapped and widened, and, for example, SPE Journal 1
993 vo1.29 p. 38 to 47 and the like are disclosed in which a radially divided resin is supplied to the gap between the concentric inner and outer cylinders, and the inner cylinder or the outer cylinder is rotated to form a multilayer structure.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記米
国特許明細書の開示に代表される多重層シート状物の製
造方法では、樹脂流路が極めて複雑となり、分割、重
合、拡幅など装置的にも煩雑且つ大掛かりな構造とな
る。また、上記雑誌の記載に代表される同心成層方法で
は、成層部分における内筒又は外筒の回転駆動が必要で
あり、装置的に非常に複雑となり、単軸２流路による同
心成層方式では、装置的には簡便になるものの、流路間
での移動流が発生しやすい等の問題があった。また、特
開平１−２６１４２６号公報などにおいて、ねじれ構造
を有するエレメントからなるノズル（スタティックミキ
サー）を用いた多層化混合方法が提案されているが、一
般にスタティックミキサーの利用の際には、複数の樹脂
はスタティックミキサーに供給される以前にある程度混
合されており、その結果、多層化は図８に示すように偏
平化された異なる樹脂が混在する状態で吐出され、その
後の拡幅化がなされても得られるシート状物は単一層と
なる。However, in the method for producing a multi-layered sheet material represented by the disclosure of the above-mentioned U.S. Pat. It has a complicated and large-scale structure. Further, in the concentric stratification method represented by the above-mentioned magazine, it is necessary to rotationally drive the inner cylinder or the outer cylinder in the stratification portion, which makes the apparatus very complicated, and in the concentric stratification method using a single axial two flow path, Although the device is simple, there is a problem that a moving flow is easily generated between the flow paths. In addition, Japanese Laid-Open Patent Publication No. 1-261426 proposes a multi-layer mixing method using a nozzle (static mixer) having an element having a twisted structure. However, when using a static mixer, a plurality of mixing methods are generally used. The resin is mixed to some extent before being supplied to the static mixer, and as a result, the multi-layered resin is discharged in a state in which different flattened resins are mixed as shown in FIG. 8, and even if the subsequent widening is performed. The sheet-like material obtained is a single layer.
【０００４】また、例えば特開平４−２９８２０号公報
には、主押出機と少なくとも１つの副押出機で各々樹脂
を混練したものを、スタティックミキサーを通して共押
出板を押出成形する方法が開示されているが、この方法
は表面に線状模様を有する押出板を製造するものであ
り、使用される熱可塑性樹脂は相溶性のものに限られ
る。従って、同公報に開示された製造方法によっては多
重層シート状物は得られない。Further, for example, Japanese Patent Application Laid-Open No. 4-29820 discloses a method of extruding a coextruded plate through a static mixer, which is obtained by kneading resins in a main extruder and at least one auxiliary extruder. However, this method produces an extruded plate having a linear pattern on the surface, and the thermoplastic resin used is limited to a compatible one. Therefore, a multi-layer sheet material cannot be obtained by the manufacturing method disclosed in the publication.
【０００５】本発明はかかる状況に鑑みてなされたもの
であり、その目的は熱可塑性樹脂の同時押出成形を用い
ながら、数百から数千層の数種類の樹脂薄層からなる多
重層シートを極めて簡便な装置を用いて、効率良く且つ
高精度に成形することにある。The present invention has been made in view of the above circumstances, and an object thereof is to make a multi-layer sheet consisting of several kinds of resin thin layers of several hundreds to several thousands layers while using the coextrusion molding of a thermoplastic resin. It is to efficiently and highly accurately perform molding using a simple device.
【０００６】[0006]
【課題を解決するための手段】これらの目的は、本発明
の製造方法である一種類以上の溶融樹脂を重層ダイより
重層状態で吐出し、この吐出される重層溶融樹脂を吐出
方向に沿って分割しつつ各分割溶融樹脂を捻転流路を通
して反転する工程を、所定の回数繰り返すことにより樹
脂の重合層数を連続的に増加させ、所定の層数に達した
後に同重合溶融樹脂を拡幅しながらシート状に押し出す
ことにより達成される。These objects are the manufacturing method of the present invention. One or more kinds of molten resin are discharged in a multilayer state from a multilayer die, and the discharged multilayer molten resin is discharged along the discharge direction. The number of polymerized layers of the resin is continuously increased by repeating the step of inverting each divided molten resin through the twisting flow path while dividing, and after reaching the predetermined number of layers, the polymerized molten resin is widened. It is achieved by extruding into a sheet shape.
【０００７】また、本発明の製造装置である１以上の溶
融押出機に接続され、１種類以上の定量溶融樹脂を層状
に吐出する重層ダイと、同重層ダイから吐出される複数
層からなる重合樹脂層をその吐出方向に沿って分割する
と共に、各分割重層樹脂層を捻転させる捻転流路を有す
る第１多層化ダイと、同第１多層化ダイとほぼ同一構造
を有すると共に、樹脂出口と入口との位相を順次異なら
せて直列的に連結されてなる複数の多層化ダイと、最後
の多層化ダイの出口に連結され、重合樹脂層を拡幅して
シート状に押し出す拡幅ダイとを備えてなることを特徴
とする多重層シート状物の製造装置によっても達成され
る。Further, a polymerization comprising a multi-layer die which is connected to one or more melt extruders which are the production apparatus of the present invention and ejects one or more kinds of quantitatively molten resin in layers, and a plurality of layers ejected from the same multi-layer die. The resin layer is divided along the discharge direction, and the first multilayer die has a twisting flow path for twisting each of the divided multilayer resin layers, and has the substantially same structure as the first multilayer die and the resin outlet. Equipped with a plurality of multi-layered dies that are connected in series by sequentially changing the phase with the inlet, and a widening die that is connected to the outlet of the last multi-layered die and widens the polymerized resin layer and extrudes it into a sheet shape. The present invention can also be achieved by an apparatus for producing a multi-layered sheet-shaped product, characterized in that
【０００８】[0008]
【作用】重層ダイから１以上の樹脂が例えば左右２層に
重層されて吐出される重層溶融樹脂は、樹脂入口におい
て仕切部により上下に分割され、第１番目の多層化ダイ
の内部を流動する。この流動時に、前記仕切部が流れ方
向に捻転しているため、上下流路内で分割された状態
で、それぞれに前記仕切部に直交するように重層された
各重層溶融樹脂流は徐々に反転されて仕切部と平行な重
層状態となり、最終の出口において上下４層となる。こ
の４層に重層された溶融樹脂は、続いて第２多層化ダイ
の樹脂入口に押し込まれる。The multi-layer molten resin discharged from the multi-layer die by stacking one or more resins in two layers, for example, left and right, is divided into upper and lower parts by the partition at the resin inlet and flows inside the first multi-layer die. . At the time of this flow, since the partition part is twisted in the flow direction, the multi-layer molten resin flow layered so as to be orthogonal to the partition part in the state of being divided in the upper and lower flow paths is gradually reversed. As a result, a multi-layered state is formed in parallel with the partition part, and the upper and lower layers are formed at the final exit. The four layers of molten resin are subsequently pushed into the resin inlet of the second multilayer die.
【０００９】このとき、仕切部を挟んで押し出される上
下４層に重層された前記溶融樹脂は、第２多層化ダイの
樹脂入口において上下方向に延びる仕切部により左右に
分割されてセル本体の内部に流入する。第２多層化ダイ
の内部を左右に分割されて流動する重層溶融樹脂も捻転
仕切部により形成される捻転流路に沿って流れる間に、
上述の挙動と同様の挙動のもとで樹脂出口に向かい、左
右８層に重層された重層溶融樹脂として第２多層化ダイ
から押し出される。こうした操作が第３多層化ダイ以降
も複数のダイによって繰り返され、そのたびに層数が指
数関数的に増加していく。重層ダイから多層化ダイユニ
ットに供給されるときの樹脂の層数をｍ、多層化ダイ数
をｎとすると、理想的に多層化が行われれば、多層化ユ
ニットを通過後には、ｍ×２n の多層状樹脂流が得られ
ることになる。At this time, the molten resin layered in four layers, which are extruded with the partition portion sandwiched therebetween, is divided into left and right portions by the partition portion extending in the vertical direction at the resin inlet of the second multilayer die, and the inside of the cell main body is divided. Flow into. While the layered molten resin that flows by being divided into the left and right inside the second multilayer die also flows along the twist flow path formed by the twist partition,
Under the same behavior as described above, the resin is directed toward the resin outlet and extruded from the second multi-layer die as a multi-layer molten resin having eight layers on the left and right. Such an operation is repeated by a plurality of dies even after the third multilayer die, and the number of layers increases exponentially each time. Assuming that the number of resin layers when supplied from the multi-layer die to the multi-layer die unit is m and the number of multi-layer dies is n, ideally, when multi-layering is performed, after passing through the multi-layer unit, m × 2. A multilayer resin flow of n will be obtained.
【００１０】こうして多層化ダイユニットから押し出さ
れる多層状樹脂流は、次いで、単一の拡幅ダイに入り、
巾を拡大した多重層シート状物として押し出される。上
述の方法によれば、層数を拡大していくための樹脂の流
れは極めて円滑に進行し、その膜厚もミクロンオーダー
に制御可能なものとなる。The multilayer resin flow thus extruded from the multilayer die unit then enters a single widening die,
It is extruded as a multi-layered sheet with an expanded width. According to the above method, the flow of resin for increasing the number of layers proceeds extremely smoothly, and the film thickness thereof can be controlled to the micron order.
【００１１】[0011]
【実施例】以下、本発明を添付図面に基づいてより詳細
に説明する。図１は本発明に係る多重層シート状物の製
造装置の代表的な一構成例を概略で示す水平断面図、図
２は同製造装置の縦断面図、図３は同製造装置の賦形ヘ
ッド内に連設される多層化ダイの内部構造をモデル的に
示す斜め上方から見た透視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the accompanying drawings. FIG. 1 is a horizontal sectional view schematically showing a typical configuration example of a manufacturing apparatus for a multi-layer sheet material according to the present invention, FIG. 2 is a vertical sectional view of the manufacturing apparatus, and FIG. 3 is a shaping of the manufacturing apparatus. FIG. 3 is a perspective view seen from obliquely above, showing a model of the internal structure of a multilayer die continuously provided in the head.
【００１２】図１及び図２において、符号１及び符号２
はそれぞれ押出機を示し、各押出機１，２は定量ポンプ
３，４を介して１台の賦形ヘッド５を共有している。賦
形ヘッド５は各押出機１，２から定量ポンプ３，４を介
して定量で押し出される２種類の溶融樹脂を左右にそれ
ぞれ分離する樹脂流路６，７を通して重層ダイ８に押し
出し、同重層ダイ８にて左右２層の溶融樹脂を積層状態
で同時に吐出する。1 and 2, reference numeral 1 and reference numeral 2
Indicate extruders, and the extruders 1 and 2 share one shaping head 5 via the metering pumps 3 and 4. The shaping head 5 pushes out two kinds of molten resin, which are quantitatively extruded from the extruders 1 and 2 through the metering pumps 3 and 4, into the multi-layer die 8 through the resin flow paths 6 and 7 that separate right and left, respectively. The left and right two layers of molten resin are simultaneously discharged in a stacked state by the die 8.
【００１３】この吐出された重層溶融樹脂は、続いて賦
形ヘッド５内のハウジング９に装着された図３に示す構
造をもつ多層化ダイユニット１０に供給される。前記重
層ダイ８に直結する第１多層化ダイ１１は図３に示す如
く中空円筒状のセル本体１１ａと、その内部に密嵌固定
されると共に、その内部を２分割しながら樹脂入口１
１′及び同出口１１′′の間に捻転流路を形成する捻転
仕切部１１ｂとを有している。この第１多層化ダイ１１
に直結される第２，第３，…の多層化ダイ１２，１３，
…の構造も、同第１多層化ダイ１１にほぼ等しい。The discharged multi-layer molten resin is subsequently supplied to the multi-layer die unit 10 having the structure shown in FIG. 3 which is mounted on the housing 9 in the shaping head 5. As shown in FIG. 3, the first multi-layer die 11 directly connected to the multi-layer die 8 is a hollow cylindrical cell body 11a, which is tightly fitted and fixed in the cell body 11a, and the inside of the cell body 11a is divided into two parts so that the resin inlet 1
It has a twisting partition 11b that forms a twisting flow path between 1'and the outlet 11 ''. This first multilayer die 11
The second, third, ... multilayer dies 12, 13,
The structure of ... Is almost the same as that of the first multilayer die 11.
【００１４】図４の（ａ）及び（ｂ）は、第１多層化ダ
イ１１の樹脂入口１１′及び樹脂出口１１′′における
樹脂断面、同図の（ｃ）及び（ｄ）は第２多層化ダイ１
２の樹脂入口１２′及び樹脂出口１２′′における樹脂
断面、同図の（ｅ）及び（ｆ）は第３多層化ダイ１３の
樹脂入口１３′及び樹脂出口１３′′における樹脂断面
をモデル的に示している。同図により明らかなごとく、
第１及び第２多層化ダイ１１，１２の樹脂出口１
１′′，１２′′が、それぞれ第２及び第３の多層化ダ
イ１２，１３の各樹脂入口１２′，１３′の仕切部１１
ｂ〜１３ｂに直交するようにして連結されている。4 (a) and 4 (b) are cross sections of the resin at the resin inlet 11 'and the resin outlet 11''of the first multilayer die 11, and FIGS. 4 (c) and 4 (d) are the second multilayer. Chemical die 1
The resin cross section at the resin inlet 12 'and the resin outlet 12''of FIG. 2, (e) and (f) of the figure are the model of the resin cross section at the resin inlet 13' and the resin outlet 13 '' of the third multilayer die 13. Is shown in. As is clear from the figure,
Resin outlet 1 of the first and second multilayer dies 11, 12
1 '' and 12 '' are the partition portions 11 of the resin inlets 12 'and 13' of the second and third multilayer dies 12 and 13, respectively.
It is connected so as to be orthogonal to b to 13b.
【００１５】また、図５は第１多層化ダイ１１の内部を
流れる重層溶融樹脂の挙動を示しており、上述のごとく
重層ダイ８から２種の樹脂が左右２層に重層されて吐出
される重層溶融樹脂は、樹脂入口１１′において同図
（ａ）に示すごとく仕切部１１ｂにより上下に分割さ
れ、同第１多層化ダイ１１の内部を流動する。この流動
時に、前記仕切部１１ｂが流れ方向に捻転しているた
め、同図（ｂ）〜（ｄ）に示すごとく上下流路内で分割
され、それぞれに左右に異なる種類の樹脂が前記仕切部
１１ｂに直交するように重層されてなる各重層溶融樹脂
流は流動する間に徐々に反転され仕切部１１ｂと平行な
重層状態となり、同図（ｅ）に示すごとく最終の出口１
１′′において上下４層となる。この４層に重層された
溶融樹脂は、続いて第２多層化ダイ１２の樹脂入口１
２′に押し込まれる。FIG. 5 shows the behavior of the multi-layer molten resin flowing inside the first multi-layer die 11. As described above, the two types of resin are discharged from the multi-layer die 8 in two layers on the left and right. The multi-layer molten resin is divided into upper and lower parts at the resin inlet 11 ′ by the partition part 11 b as shown in FIG. 4A, and flows inside the first multi-layer die 11. At the time of this flow, since the partition part 11b is twisted in the flow direction, it is divided in the upper and lower flow paths as shown in FIGS. Each layered molten resin flow, which is layered so as to be orthogonal to 11b, is gradually reversed while flowing and becomes a layered state parallel to the partition portion 11b, and as shown in FIG.
In 1 ″, there are four layers above and below. The molten resin layered in four layers is subsequently fed to the resin inlet 1 of the second multilayer die 12.
It is pushed into 2 '.
【００１６】このとき、図４（ｂ）に示すごとく仕切部
１１ｂを挟んで押し出される上下４層に重層された溶融
樹脂は、第２多層化ダイ１２の樹脂入口１２′において
上下方向に延びる仕切部１２ｂにより左右に分割されて
セル本体１２ａの内部に流入する。第２多層化ダイ１２
の内部を左右に分割されて流動する重層溶融樹脂も捻転
仕切部１２ｂにより形成される捻転流路に沿って流れる
間に、図５に示す上述の挙動をとって樹脂出口１２′′
においては図４（ｄ）に示すごとく左右８層に重層され
た重層溶融樹脂として第２多層化ダイ１２から押し出さ
れる。こうした操作が第３多層化ダイ１３以降の複数の
ダイによって繰り返され、そのたびに層数が指数関数的
に増加していく。重層ダイ８から多層化ダイユニット１
０に供給されるときの樹脂の層数をｍ、多層化ダイ数を
ｎとすると、理想的に多層化が行われれば、多層化ユニ
ット１０を通過後には、ｍ×２n の多層状樹脂流が得ら
れることになる。At this time, as shown in FIG. 4 (b), the molten resin layered in the upper and lower four layers extruded with the partition portion 11b sandwiched therebetween is extended vertically in the resin inlet 12 'of the second multi-layer die 12. It is divided into left and right by the portion 12b and flows into the inside of the cell body 12a. Second multilayer die 12
While the multi-layer molten resin, which is divided into right and left and flows in the inside of the resin, also flows along the twisting flow path formed by the twisting partition 12b, the resin outlet 12 ″ has the above-described behavior shown in FIG.
In FIG. 4D, as shown in FIG. 4 (d), it is extruded from the second multi-layer die 12 as a multi-layer molten resin layered in eight layers on the left and right. This operation is repeated by a plurality of dies from the third multilayer die 13 onward, and the number of layers increases exponentially each time. Multilayer die 8 to multilayer die unit 1
Assuming that the number of resin layers when supplied to 0 is m and the number of multi-layer dies is n, ideally, when multi-layering is performed, after passing through the multi-layering unit 10, m × 2 n multi-layer resin The flow will be obtained.
【００１７】多層状樹脂流をシート化する方法は圧延等
幾つか考えられるが、本発明では拡幅ダイ１４によりシ
ート化して吐出する。得られるシート状物は、図８に示
すごとき異なる樹脂が層状に分散して混在状態にある単
一層ではなく、全域に亘って多層化している多層シート
状物となる。Several methods such as rolling can be considered for forming the multilayer resin flow into a sheet. In the present invention, the sheet is discharged by the widening die 14 into a sheet. The obtained sheet-like article is not a single layer in which different resins are dispersed in layers as shown in FIG. 8 but in a mixed state, but is a multi-layer sheet-like article having a multi-layer over the entire area.
【００１８】本明細書において重合溶融樹脂とは、２つ
以上の溶融した樹脂が重り合って多層を形成した溶融樹
脂のことであり、各層は明確に分離しており、層間で樹
脂が混合されることのほとんどない材質が選ばれる。層
間で樹脂が混合されると、本発明の目的とするシート状
物は得られない。In the present specification, the polymerized molten resin is a molten resin in which two or more molten resins are overlapped with each other to form a multilayer, each layer is clearly separated, and the resins are mixed between the layers. A material that is rarely used is selected. When the resin is mixed between the layers, the sheet-like article aimed at by the present invention cannot be obtained.
【００１９】使用可能な樹脂の組合せは、共に溶融押出
し可能で、例えばポリメタクリル酸メチルとポリカーボ
ネートや、ポリエチレンとポリカーボネートのように、
一般に相溶性の余り良くないもの、あるいは、共に溶融
押出し可能で、ある限られた条件下（温度、圧力等）で
非相溶性を示すもの、更には同種の熱可塑性樹脂同士の
ように、共に溶融押し出し可能で、一般に相溶性であっ
ても各層の界面を乱さない程度のものであればよい。The resin combinations which can be used are those which can be melt-extruded together, for example polymethylmethacrylate and polycarbonate, polyethylene and polycarbonate,
In general, they are not very compatible, or they are melt-extrudable together and show incompatibility under certain limited conditions (temperature, pressure, etc.). Further, like thermoplastic resins of the same kind, Any material that can be melt-extruded and that is generally compatible but does not disturb the interface of each layer may be used.
【００２０】更に、本発明の装置に適用される樹脂とし
ては、要求される多層シートの機能に応じて広範な熱可
塑性樹脂の中から選択が可能であるが、特に光透過性が
必要とされる場合はポリスチレン、ポリカーボネート、
ポリ塩化ビニル、ポリエチレンテレフタレート、ポリメ
チルメタクリレート等のアクリル樹脂やポリプロピレン
等の各種樹脂の組合せを挙げることができるが、これら
の共重合樹脂、ブレンド樹脂等も適用可能である。勿
論、他の性能が必要な場合は、これらに限定されない。
また、前述の各種樹脂に各種の着色材を添加することに
より、様々な意匠を表出させることも可能である。次
に、本発明を比較例と共に具体的に説明する。Further, the resin applied to the apparatus of the present invention can be selected from a wide range of thermoplastic resins according to the required function of the multilayer sheet, but in particular, light transmissivity is required. Polystyrene, polycarbonate,
Examples thereof include combinations of various resins such as acrylic resins such as polyvinyl chloride, polyethylene terephthalate, and polymethylmethacrylate, and polypropylene, and copolymer resins of these and blend resins are also applicable. Of course, it is not limited to these when other performance is required.
Further, it is possible to expose various designs by adding various coloring materials to the above-mentioned various resins. Next, the present invention will be specifically described together with comparative examples.
【００２１】「具体例１」樹脂として、ポリメタクリル
酸メチル（ＰＭＭＡ、三菱レイヨン社製アクリペット）
及びポリカーボネート（ＰＣ、三菱瓦斯化学社製ユーピ
ロン）を用いた。ＰＭＭＡ及びＰＣをそれぞれ２５０℃
で溶融し、押出機で押し出し、それぞれギヤポンプによ
り１００ｃｍ3 ／ｍｉｎで送り、左半分をＰＭＭＡ、右
半分をＰＣとした直径１６ｍｍの円柱状の二層状樹脂流
とし、多層化ダイ（（株）ノリタケカンパニーリミテッ
ド製 スタティックミキサー、各ダイの長さ１６ｍｍ、
各ダイの外径１６ｍｍ、各ダイの仕切部の捻れ角１８０
°、多層化ダイ数１０個）に供給し、上記多層化ダイを
通過させ、ダイより押し出して厚み３ｍｍ、幅３０ｃｍ
の多層化シートを得た。[Specific Example 1] Polymethyl methacrylate (PMMA, acrypet manufactured by Mitsubishi Rayon Co., Ltd.) as a resin
And polycarbonate (PC, Iupilon manufactured by Mitsubishi Gas Chemical Co., Inc.) were used. 250 ℃ for PMMA and PC
Melted, and extruded with an extruder, and sent by a gear pump at 100 cm 3 / min, and a cylindrical two-layer resin flow of 16 mm in diameter with PMMA in the left half and PC in the right half was used as a multi-layer die (Noritake Co., Ltd.). Company Limited static mixer, each die length 16mm,
Outer diameter of each die 16 mm, twist angle of partition of each die 180
°, the number of multi-layer dies is 10), pass through the multi-layer die, and extrude from the die to have a thickness of 3 mm and a width of 30 cm.
A multi-layered sheet of was obtained.
【００２２】光学顕微鏡で前記シート断面を観察したと
ころ、各樹脂層の厚みは１〜５μｍ程度であり、平均的
な層の厚みを３μｍとすると、層数は１０００程度であ
ると推測され、十分な多層からなるシートが得られた。
実際に得られたシートの拡大断面を図６に示す。When the cross section of the sheet is observed with an optical microscope, the thickness of each resin layer is about 1 to 5 μm, and assuming that the average layer thickness is 3 μm, the number of layers is estimated to be about 1000, which is sufficient. A multi-layered sheet was obtained.
An enlarged cross section of the sheet actually obtained is shown in FIG.
【００２３】「具体例２」樹脂としてポリエチレン（Ｐ
Ｅ、三井石油化学社製 ウルトゼックス）及びポリカー
ボネート（ＰＣ、三菱瓦斯化学社製 ユーピロン）を用
いた。ＰＥ及びＰＣをそれぞれ２２０℃、２５０℃で溶
融して押出機で押し出した以外は、具体例１と同様であ
り、厚み３ｍｍ、幅３０ｃｍのシートを得た。[Specific Example 2] Polyethylene (P
E, Ultzex manufactured by Mitsui Petrochemical Co., Ltd. and polycarbonate (PC, Iupilon manufactured by Mitsubishi Gas Chemical Co., Inc.) were used. A sheet having a thickness of 3 mm and a width of 30 cm was obtained in the same manner as in Example 1 except that PE and PC were melted at 220 ° C. and 250 ° C. and extruded by an extruder.
【００２４】光学顕微鏡でシート断面を観察したとこ
ろ、各樹脂層の平均的厚みが５０μｍ程度のシートが得
られた。実際に得られたシートの拡大断面を図７に示
す。When the cross section of the sheet was observed with an optical microscope, a sheet having an average thickness of each resin layer of about 50 μm was obtained. An enlarged cross section of the sheet actually obtained is shown in FIG.
【００２５】「比較例」樹脂としてポリメタクリル酸メ
チル（ＰＭＭＡ，三菱レイヨン社製アクリペット）及び
ポリカーボネート（ＰＣ、三菱瓦斯化学社製ユーピロ
ン）を用いた。各樹脂をギヤポンプにより１００ｃｍ3
／ｍｉｎで送り、多層化ユニットに至る以前にある程度
混合し、直径１６ｍｍの円柱状の層状ではない混合樹脂
流とした以外は実施例１と同様に実験を行い、厚み３ｍ
ｍ、幅３０ｃｍのシートを得た。得られたシートの断面
を光学顕微鏡でみたとこと、図８に模式的に示されるよ
うに、多層化は部分的で、且つ不規則なものであった。"Comparative Example" Polymethylmethacrylate (PMMA, Acrypet manufactured by Mitsubishi Rayon Co., Ltd.) and polycarbonate (PC, Iupilon manufactured by Mitsubishi Gas Chemical Co., Inc.) were used as resins. 100 cm 3 of each resin by gear pump
/ Min, mixed to some extent before reaching the multi-layer unit, and an experiment was carried out in the same manner as in Example 1 except that a cylindrical mixed resin flow having a diameter of 16 mm was used, and the thickness was 3 m.
A sheet of m and a width of 30 cm was obtained. When the cross section of the obtained sheet was observed with an optical microscope, the multilayered structure was partial and irregular, as schematically shown in FIG.
【００２６】[0026]
【発明の効果】以上の説明からも明らかなごとく、本発
明の多重層シート状物の製造方法及び製造装置によれ
ば、簡単な構造を備えた装置と操作により数百層〜数千
層に及ぶ樹脂薄膜を重層したシート状物を連続的に且つ
高精度に製造することが可能となる。As is apparent from the above description, according to the method and apparatus for producing a multi-layer sheet material of the present invention, several hundred to several thousand layers can be formed by an apparatus having a simple structure and operation. It is possible to continuously and highly accurately manufacture a sheet-shaped material in which the resin thin films are layered.
【図１】本発明の代表的な実施例である多重層シート状
物の製造装置の全体構成を概略で示す水平断面図であ
る。FIG. 1 is a horizontal cross-sectional view schematically showing the overall configuration of an apparatus for producing a multi-layer sheet material, which is a typical embodiment of the present invention.
【図２】同装置の概略縦断面図である。FIG. 2 is a schematic vertical sectional view of the device.
【図３】同装置に装着される多層化ダイユニットの一部
を示す斜め上方から見た透視図である。FIG. 3 is a perspective view showing a part of a multi-layer die unit mounted on the apparatus, as seen from obliquely above.
【図４】同ダイユニットにおける各多層化ダイの樹脂入
口及び出口の樹脂断面を示す機能説明図である。FIG. 4 is a functional explanatory view showing a resin cross section of a resin inlet and an outlet of each multilayer die in the die unit.
【図５】多層化ダイにおける捻転仕切部と溶融樹脂との
挙動説明図である。FIG. 5 is an explanatory view of the behavior of the twist partition and the molten resin in the multilayer die.
【図６】本発明の具体例１により得られたシートの断面
拡大図である。FIG. 6 is an enlarged cross-sectional view of a sheet obtained according to Example 1 of the present invention.
【図７】同具体例２により得られたシートの断面拡大図
である。FIG. 7 is an enlarged cross-sectional view of the sheet obtained in Specific Example 2.
【図８】比較例により得られたシートの模式断面図であ
る。FIG. 8 is a schematic sectional view of a sheet obtained by a comparative example.
１，２ 押出機 ３，４ 定量ギヤポンプ ５ 賦型ヘッド ６，７ 樹脂流路 ８ 重層ダイ ９ ハウジング １０ 多層化ダイユニット １１〜１３ 多層化ダイ １４ 拡幅ダイ 1, 2 Extruder 3,4 Fixed-quantity gear pump 5 Molding head 6,7 Resin flow path 8 Multi-layer die 9 Housing 10 Multi-layer die unit 11-13 Multi-layer die 14 Widening die
Claims (2)
層状態で吐出し、この吐出される重層溶融樹脂を吐出方
向に沿って分割しつつ各分割溶融樹脂を捻転流路を通し
て反転する工程を、所定の回数繰り返すことにより樹脂
の重合層数を連続的に増加させ、所定の層数に達した後
に同重合溶融樹脂を拡幅しながらシート状に押し出すこ
とを備えてなることを特徴とする多重層シート状物の製
造方法。1. A step of discharging one or more kinds of molten resin from a multilayer die in a multilayered state, dividing the discharged multilayered molten resin along the discharge direction, and inverting each divided molten resin through a twist flow path. The method is characterized in that the number of polymerized layers of the resin is continuously increased by repeating a predetermined number of times, and the polymerized molten resin is extruded into a sheet shape while widening after reaching a predetermined number of layers. A method for producing a multilayer sheet material.
以上の定量溶融樹脂を層状に吐出する重層ダイと、同重
層ダイから吐出される複数層からなる重合樹脂層をその
吐出方向に沿って分割すると共に、各分割重層樹脂層を
捻転させる捻転流路を有する第１多層化ダイと、同第１
多層化ダイとほぼ同一構造を有すると共に、樹脂出口と
入口との位相を順次異ならせて直列的に連結されてなる
複数の多層化ダイと、最後の多層化ダイの出口に連結さ
れ、重合樹脂層を拡幅してシート状に押し出す拡幅ダイ
とを備えてなることを特徴とする多重層シート状物の製
造装置。2. A multi-layer die connected to one or more melt extruders for ejecting one or more kinds of quantitatively melted resin in layers, and a polymerized resin layer consisting of a plurality of layers ejected from the same multi-layer die in the ejection direction. A first multi-layer die having a twist flow path for twisting each of the divided multi-layer resin layers while dividing the first multi-layer die and the first multi-layer die.
It has almost the same structure as the multi-layered die, and it has a plurality of multi-layered dies that are connected in series with the resin outlet and the inlet being sequentially different in phase, and is connected to the outlet of the last multi-layered die An apparatus for producing a multi-layer sheet-like product, comprising: a widening die for widening the layers and extruding them into a sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6046085A JPH07251435A (en) | 1994-03-16 | 1994-03-16 | Method and device for manufacture of multiple layer sheet-shaped material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6046085A JPH07251435A (en) | 1994-03-16 | 1994-03-16 | Method and device for manufacture of multiple layer sheet-shaped material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07251435A true JPH07251435A (en) | 1995-10-03 |
Family
ID=12737157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6046085A Pending JPH07251435A (en) | 1994-03-16 | 1994-03-16 | Method and device for manufacture of multiple layer sheet-shaped material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07251435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013224030A (en) * | 2012-04-19 | 2013-10-31 | Nordson Extrusion Dies Industries Llc | System and method for making multilayer film and layer multiplication device |
| US10857715B2 (en) | 2016-08-24 | 2020-12-08 | Promix Solutions Ag | Mixer structure for a film die and a film die |
-
1994
- 1994-03-16 JP JP6046085A patent/JPH07251435A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013224030A (en) * | 2012-04-19 | 2013-10-31 | Nordson Extrusion Dies Industries Llc | System and method for making multilayer film and layer multiplication device |
| US10857715B2 (en) | 2016-08-24 | 2020-12-08 | Promix Solutions Ag | Mixer structure for a film die and a film die |
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