JPH11227023A - Apparatus and method for producing composite resin sheet - Google Patents

Apparatus and method for producing composite resin sheet

Info

Publication number
JPH11227023A
JPH11227023A JP10036114A JP3611498A JPH11227023A JP H11227023 A JPH11227023 A JP H11227023A JP 10036114 A JP10036114 A JP 10036114A JP 3611498 A JP3611498 A JP 3611498A JP H11227023 A JPH11227023 A JP H11227023A
Authority
JP
Japan
Prior art keywords
resin
composite resin
flow
composite
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
Application number
JP10036114A
Other languages
Japanese (ja)
Inventor
Michisuke Edamatsu
通介 枝松
Yasuo Hiromoto
泰夫 広本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP10036114A priority Critical patent/JPH11227023A/en
Publication of JPH11227023A publication Critical patent/JPH11227023A/en
Pending legal-status Critical Current

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  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To produce a composite resin sheet to which design effect, light barrier properties and visual field controllability are imparted by the simultaneous extrusion molding of a thermoplastic resin. SOLUTION: An extrusion molding apparatus equipped with a composite resin flow path 21 having a composite resin flow forming part 22 at its one end and a composite resin flow outflow port 23 at its other end and gradually increasing the thickness of the composite resin flow from the composite resin flow forming part 22 toward the composite resin outflow port is used and a resin for resin ridges (B) and a resin for the resin layer (A) are allowed to flow in the composite flow forming part 22 from the respective passages to be allowed to flow out of the composite resin outflow port 23 as a sheet-like article in a molten state and this sheet-like article is held between a pair of molding rolls and molded into an extrusion panel while forming a molten resin sumps between the surface of the sheet-like article and the molding rolls.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、シート状の樹脂層
の内部に樹脂条が筋状に埋設されてなる複合樹脂シート
の製造装置及び製造方法に関する。この製造装置及び方
法によれば、特に、樹脂条が着色された、主として美観
を重視する意匠性シート、一定方向の光を遮断し又は視
界を制御する遮光シートや視界制御シートの製造が可能
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for producing a composite resin sheet in which resin strips are embedded in a sheet-like resin layer in a streak shape. According to this manufacturing apparatus and method, in particular, it is possible to manufacture a design sheet in which resin strips are colored, mainly emphasizing aesthetic appearance, a light-shielding sheet that blocks light in a certain direction or controls a view, and a view control sheet. is there.

【0002】[0002]

【従来の技術】透明な熱可塑性樹脂と不透明な熱可塑性
樹脂とを同時押出しして透明部分と不透明部分とを交互
に多数積層した遮光板やライトコントロールフィルムが
知られている(特開昭58−22135号公報、特開昭
61−125846号公報)。また、視界制御シート等
の製造方法として透明樹脂フィルムと光遮断性フィルム
とを、例えば熱融着ラミネート、ドライラミネート等に
よって交互に積層し、これを所定の厚みにスライスする
方法などが提案されている(特開昭51−75456号
公報)。
2. Description of the Related Art There is known a light-shielding plate or a light control film in which a transparent thermoplastic resin and an opaque thermoplastic resin are simultaneously extruded and a large number of transparent portions and opaque portions are alternately laminated. No. 22135, JP-A-61-125846). Further, as a method for manufacturing a visibility control sheet or the like, a method has been proposed in which a transparent resin film and a light-shielding film are alternately laminated by, for example, heat-sealing lamination or dry lamination, and this is sliced to a predetermined thickness. (JP-A-51-75456).

【0003】また、熱可塑性樹脂を押出成形法によりシ
ート化する技術として、溶融状態の熱可塑性樹脂を成形
ダイの出口から押し出した後、シートの表面状態と厚み
を均一にするためにシートの一方の面と成形ロールの間
に溶融樹脂の溜まり(以下、適宜「バンク」と記す)を
形成する技術が知られている。この成形法では、成形ロ
ール部のバンク内で、シートの厚み方向Yと長さ方向Z
で表される断面において溶融樹脂が循環反転する流れが
生じたり、またシートの幅方向Xへの二次的流れが発生
したりする。
As a technique for forming a thermoplastic resin into a sheet by an extrusion molding method, a molten thermoplastic resin is extruded from an exit of a molding die, and then one side of the sheet is made uniform in order to make the surface state and the thickness of the sheet uniform. There is known a technique for forming a pool of molten resin (hereinafter, appropriately referred to as a "bank") between a surface of a sheet and a forming roll. In this forming method, a sheet thickness direction Y and a length direction Z are set in a bank of a forming roll portion.
In the cross section represented by, a flow in which the molten resin circulates and inverts occurs, and a secondary flow in the sheet width direction X occurs.

【0004】[0004]

【発明が解決しようとする課題】ところで、透明部分と
不透明部分とを交互に多数積層した遮光板等をこのよう
な押出成形法によって製造する場合は、Y方向の端部に
は前述のバンク内の反転流や、バンクの二次的流れの影
響を受けるので、口金部で形成された透明樹脂と不透明
樹脂の積層構造が変形する点が問題である。
When a light-shielding plate or the like in which a large number of transparent portions and opaque portions are alternately laminated is manufactured by such an extrusion molding method, the end in the Y direction is provided within the above-mentioned bank. The problem is that the laminated structure of the transparent resin and the opaque resin formed at the base portion is deformed because of the influence of the inversion flow and the secondary flow of the bank.

【0005】一方、成形ロールを用いてバンクを形成さ
せることなく製造したシートは、シート厚が不均一で、
表面に筋、凹凸、うねり、小皺等が発生するので、視界
制御シートや遮光性シートに適したものとは言えない。
本発明はかかる状況に鑑みされたものであり、その目的
は熱可塑性樹脂の同時押出し成形により、基体樹脂シー
ト中に所望の形状、サイズの樹脂条が埋設された、表面
が平滑で、高級な意匠性や、遮光性、視界制御性等が付
与された複合樹脂シートを極めて簡便に製造することの
できる装置及び方法を提供することにある。
On the other hand, a sheet manufactured without forming a bank using a forming roll has an uneven sheet thickness.
Since streaks, irregularities, undulations, fine wrinkles, etc. occur on the surface, it cannot be said that the sheet is suitable for a view control sheet or a light shielding sheet.
The present invention has been made in view of such circumstances, and its object is to bury a resin strip having a desired shape and size in a base resin sheet by co-extrusion molding of a thermoplastic resin. It is an object of the present invention to provide an apparatus and a method capable of extremely easily producing a composite resin sheet provided with a design property, a light shielding property, a visibility control property, and the like.

【0006】[0006]

【課題を解決するための手段】本発明は、上記課題を解
決するため、X方向に所定の幅、Y方向に所定の厚み及
びZ方向に所定の長さを有し、Z方向の一端に配置され
た複合樹脂流形成部(22)において、樹脂条B用の樹
脂bをZ方向に向かって流出させるための、所定間隔を
もって配置された複数の流路(31)及びXZ平面の両
側からYZ平面に対して所定の角度α(零を含む)をも
って、複合流形成部(22)に樹脂層A用の樹脂aを流
入させるための2列の流路(41、42)を含み、流路
(41、42)はXZ断面においてZ方向の高さが大き
い部分Rn及びLnとZ方向の高さが小さい部分(零を
含む)Rm及びLmとが交互に配置された形状を有して
おり、複数の流路(31)のそれぞれが部分Rm及びL
mと対向する位置に配置されており、Z方向の他端には
Y方向に所定の厚みを有する複合樹脂流出口(23)が
設けられ、かつ、複合樹脂流形成部(22)から複合樹
脂流出口(23)に至る複合樹脂流路(21)における
Y方向の厚みが複合樹脂流形成部(22)から複合樹口
(23)に向かって増加しており、複合樹脂流路(2
1)の複合樹脂流形成部(22)と複合樹脂流出口(2
3)との中間部に、複合樹脂流路(21)の両側または
片側から複合樹脂流路(21)に向けて第3の樹脂cを
吐出させるための、X方向に延在する吐出口(51)が
具備された複合樹脂シートの製造装置を提供する。
In order to solve the above-mentioned problems, the present invention has a predetermined width in the X direction, a predetermined thickness in the Y direction and a predetermined length in the Z direction, and has one end in the Z direction. In the arranged composite resin flow forming section (22), a plurality of flow paths (31) arranged at a predetermined interval for allowing the resin b for the resin strip B to flow in the Z direction and from both sides of the XZ plane. At a predetermined angle α (including zero) with respect to the YZ plane, two rows of flow paths (41, 42) for flowing the resin a for the resin layer A into the composite flow forming section (22) are included. The roads (41, 42) have a shape in which portions Rn and Ln having a large height in the Z direction and portions (including zero) Rm and Lm having a small height in the Z direction are alternately arranged in the XZ section. And each of the plurality of flow paths (31) has the portions Rm and L
m, a composite resin outlet (23) having a predetermined thickness in the Y direction is provided at the other end in the Z direction, and the composite resin flow forming portion (22) The thickness in the Y direction of the composite resin flow path (21) reaching the outlet (23) increases from the composite resin flow forming section (22) toward the composite opening (23).
1) The composite resin flow forming section (22) and the composite resin outlet (2)
A discharge port extending in the X direction for discharging the third resin c from both sides or one side of the composite resin flow path (21) toward the composite resin flow path (21) at an intermediate portion with the composite resin flow path (21). 51) An apparatus for manufacturing a composite resin sheet provided with 51) is provided.

【0007】本発明は、また、上記の装置を用い、樹脂
条B用の樹脂bを複数の流路(31)から複合樹脂流形
成部(22)に流入させるとともに、樹脂層A用の樹脂
aを2列の流路(41、42)から複合樹脂流形成部
(22)に流入させて複合樹脂流を形成し、さらに樹脂
cを吐出口(51)から複合樹脂流路(21)に流入さ
せて、これらの樹脂を合流させ、次いで複合樹脂流出口
(23)から溶融状態のシート状物として流出させ、こ
のシート状物を少なくとも1対の成形ロール間に挟み込
み、シート状物の面と成形ロール間に溶融樹脂の溜まり
を形成しつつ押出板に成形することを含む複合樹脂シー
トの製造方法を提供する。
According to the present invention, a resin b for a resin strip B is caused to flow from a plurality of flow paths (31) into a composite resin flow forming section (22) by using the above-described apparatus. a is caused to flow into the composite resin flow forming section (22) from the two rows of flow paths (41, 42) to form a composite resin flow, and the resin c is further discharged from the discharge port (51) to the composite resin flow path (21). The resin is allowed to flow, these resins are merged, and then discharged as a molten sheet from the composite resin outlet (23). The sheet is sandwiched between at least one pair of forming rolls, and the surface of the sheet is pressed. To provide a method for producing a composite resin sheet, which comprises forming a pool of molten resin between a sheet and a forming roll while forming the sheet into an extruded plate.

【0008】[0008]

【発明の実施の形態】以下、図面を参照しながら本発明
を説明する。図1〜図4は本発明の押出成形装置の一態
様を示す図であって、図1及び図2はそれぞれ装置全体
の模式平面図及び側面図であり、図3は同装置の内部構
造例を示す平面断面図であり、図4は図3におけるI−
I線の矢視断面図である。図5は、図4のII−II線方向
からの斜視図である。図6は、本発明の代表的な実施例
に係る製造装置における樹脂流路を示す図であり、図4
におけるIII −III 線の矢視断面図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 4 are views showing one embodiment of the extrusion molding apparatus of the present invention. FIGS. 1 and 2 are schematic plan views and side views of the entire apparatus, respectively. FIG. 3 is an example of the internal structure of the apparatus. FIG. 4 is a sectional plan view showing I- in FIG.
It is arrow sectional drawing of the I line. FIG. 5 is a perspective view taken along the line II-II of FIG. FIG. 6 is a view showing a resin flow path in a manufacturing apparatus according to a representative embodiment of the present invention.
FIG. 3 is a sectional view taken along line III-III in FIG.

【0009】本発明の装置において、X方向は得られる
複合樹脂シートの幅方向に、Y方向はその厚み方向に、
またZ方向はその進行方向(長さ方向)に一致する。従
って、Z方向は図4においては鉛直方向に、また図2に
おいては水平方向に取ることができる。シート状の樹脂
層Aを形成するための樹脂aは第1押出機(1)により
賦形ヘッド(5)内に溶融押出しされ、第1流路(1
1)を通って第1定量ポンプ(3)に至り、また樹脂条
Bを形成するための樹脂bは第2押出機(2)により賦
形ヘッド(5)内に溶融押出しされ、第2流路(12)
を通って第2定量ポンプ(4)に至る(図3)。樹脂a
はダイパック(6)内に設けられた分配ノズルによって
2つの流路(13)、(16)に分配され、また、樹脂
bはダイパック(6)内に設けられた分配ノズルによっ
て複数の流路(31)に分配される(図3)。樹脂bは
同一水平面内に形成された複数の流路(31)から複合
樹脂流形成部(22)内に吐出され、所定の形状、寸
法、配列などを有する複数の樹脂条Bの流れを形成す
る。一方、樹脂aは複合樹脂流形成部(22)に複数の
流路(31)から吐出された樹脂bの複数の樹脂条Bを
両側から挟み込むようにして扁平状に変形し、樹脂条B
をその内部に埋設しながら複合樹脂流を形成して複合樹
脂流出口(23)から押し出される。この複合樹脂流
は、成形ロール群(10)により引き取られてシート状
に賦形され、次いでシート切断機(15)により所定の
長さに切断される。
In the apparatus of the present invention, the X direction is the width direction of the obtained composite resin sheet, the Y direction is its thickness direction,
The Z direction corresponds to the traveling direction (length direction). Accordingly, the Z direction can be taken in the vertical direction in FIG. 4 and in the horizontal direction in FIG. The resin a for forming the sheet-like resin layer A is melt-extruded into the shaping head (5) by the first extruder (1), and the first flow path (1) is formed.
The resin b for forming the resin strip B is melt-extruded into the shaping head (5) by the second extruder (2) and reaches the first metering pump (3). Road (12)
To the second metering pump (4) (FIG. 3). Resin a
Is distributed to two flow paths (13) and (16) by a distribution nozzle provided in the die pack (6), and the resin b is distributed to a plurality of flow paths () by a distribution nozzle provided in the die pack (6). 31) (FIG. 3). The resin b is discharged from the plurality of flow paths (31) formed in the same horizontal plane into the composite resin flow forming portion (22), and forms a flow of a plurality of resin strips B having a predetermined shape, size, arrangement, and the like. I do. On the other hand, the resin a is deformed into a flat shape by sandwiching the plurality of resin strips B of the resin b discharged from the plurality of flow paths (31) from both sides into the composite resin flow forming section (22).
Is formed in the inside thereof to form a composite resin flow and is extruded from the composite resin outlet (23). This composite resin stream is taken up by a group of forming rolls (10), shaped into a sheet, and then cut into a predetermined length by a sheet cutter (15).

【0010】この装置は、複合樹脂流形成部(22)に
おける基体樹脂シート(樹脂層A)用の樹脂aを流入さ
せるための2列の流路(41、42)の形状と配置、及
び所定のY方向の厚み(複合樹脂シートの厚みに対応す
る)を有する複合樹脂流出口(23)に対して、複合樹
脂流形成部(22)のY方向の厚みを小さくすることに
よって複合樹脂流形成部において複数の流路(31)の
それぞれの間に樹脂aが流入しやすくした構造としたこ
とに大きな特徴を有する。
In this apparatus, the shape and arrangement of two rows of flow paths (41, 42) for flowing resin a for the base resin sheet (resin layer A) in the composite resin flow forming section (22) are determined. The thickness of the composite resin flow forming portion (22) in the Y direction is reduced with respect to the composite resin outlet (23) having the thickness in the Y direction (corresponding to the thickness of the composite resin sheet). A major feature is that the structure is such that the resin a easily flows into each of the plurality of flow paths (31) in the portion.

【0011】図6及び図7において、流路(41)の部
分Ln、Lm及び流路(42)の部分Rn、RmのX方
向における相対的な位置は、傾斜角αに対応する分だけ
ずれている。X方向における部分LnとRnの幅は等し
く、また部分LmとRmの幅も等しい。Z方向における
部分LnとRnの高さΔLnとΔRnは等しく、また部
分LmとRmの高さΔLmとΔRmも等しい。
In FIGS. 6 and 7, the relative positions of the portions Ln and Lm of the flow path (41) and the parts Rn and Rm of the flow path (42) in the X direction are shifted by an amount corresponding to the inclination angle α. ing. The widths of the portions Ln and Rn in the X direction are equal, and the widths of the portions Lm and Rm are also equal. The heights ΔLn and ΔRn of the portions Ln and Rn in the Z direction are equal, and the heights ΔLm and ΔRm of the portions Lm and Rm are also equal.

【0012】図8には、図6に対して複合樹脂流路の下
流位置における樹脂条Bの断面形状を示している。流路
(31)から円形状で吐出された樹脂bが図6において
矢印で示される樹脂aの流動作用によって扁平状に変形
されるのである。なお、図8には、樹脂条Bの位置関係
を理解しやすくするために、この位置より上流にある流
路(41、42)の位置が便宜的に書き込まれた合成図
が示されている。
FIG. 8 shows a sectional shape of the resin strip B at a position downstream of the composite resin flow path with respect to FIG. The resin b discharged in a circular shape from the flow path (31) is deformed flat by the flow action of the resin a indicated by an arrow in FIG. FIG. 8 is a composite diagram in which the positions of the flow paths (41, 42) upstream of this position are written for convenience in order to facilitate understanding of the positional relationship of the resin strip B. .

【0013】また、図4に示す如く、複合樹脂流出口
(23)のY方向の厚みに対して、複合樹脂流形成部
(22)のY方向の厚みは小さくなっており、流路(4
1、42)の出口は流路(31)に近くなっている。こ
れにより、複数の流路(31)の間隔が小さい場合にお
いても複数の流路(31)の間に樹脂aを流入させるこ
とが可能となり、精度良く賦形を行うことができる。
As shown in FIG. 4, the thickness of the composite resin flow forming portion (22) in the Y direction is smaller than the thickness of the composite resin outlet (23) in the Y direction.
The outlets of (1, 42) are close to the channel (31). Thereby, even when the interval between the plurality of flow paths (31) is small, the resin a can flow between the plurality of flow paths (31), and the shaping can be performed with high accuracy.

【0014】さらに、複数の流路(31)の間隔が狭い
場合、特に間隔が1mmより小さい場合には、部分R
n、LnのX方向の幅を複数の流路(31)の間隔の1
/2以下にすることにより、樹脂aを効率よく流入させ
ることが可能となる。また、部分Lnの高さΔLn、部
分Rnの高さΔRn、樹脂の粘度、各樹脂の流速等を変
えることにより樹脂aを効率よく流入させるための相乗
効果を得ることが可能である。
Further, when the interval between the plurality of flow paths (31) is narrow, particularly when the interval is smaller than 1 mm, the portion R
The width in the X direction of n and Ln is set to one of the intervals of the plurality of flow paths (31).
By setting the ratio to / 2 or less, the resin a can efficiently flow. By changing the height ΔLn of the portion Ln, the height ΔRn of the portion Rn, the viscosity of the resin, the flow rate of each resin, and the like, it is possible to obtain a synergistic effect for allowing the resin a to flow efficiently.

【0015】また、樹脂層Aの厚み方向に対する樹脂条
Bの傾斜角度は、角度を適宜変更して自由に設定するこ
とができる。また、図11に示すように、複合樹脂流形
成部(22)から複合樹脂流出口(23)までの複合樹
脂流路(21)の幅(X方向の距離)を同じにし、複合
樹脂流出口(23)の先端に流路縮小用口金(32)を
装着して、この口金(32)の出口(33)から流出さ
せると、複合シートの幅、厚みまたは幅と厚みを狭める
こともできる。幅のみを縮小すると樹脂条Bのピッチを
小さくすることができ、幅と厚みを縮小すると複合シー
トの厚みと樹脂条Bのピッチを小さくすることができ
る。
The inclination angle of the resin strip B with respect to the thickness direction of the resin layer A can be freely set by appropriately changing the angle. As shown in FIG. 11, the width (distance in the X direction) of the composite resin flow path (21) from the composite resin flow forming section (22) to the composite resin outlet (23) is set to be the same, and When a channel reducing die (32) is attached to the end of (23) and the flow is discharged from the outlet (33) of the die (32), the width, thickness or width and thickness of the composite sheet can be reduced. If only the width is reduced, the pitch of the resin strips B can be reduced, and if the width and thickness are reduced, the thickness of the composite sheet and the pitch of the resin strips B can be reduced.

【0016】複数の流路(31)の断面形状は、製作の
容易さの点から円形等の単純な形状をとることが望まし
いが、必要に応じて長円形、矩形、その他の異形な断面
形状とすることもできる。さらには、各種の断面形状の
ものを組み合わせて配列することもできる。図12は、
成形ロール群(10)のYZ断面の部分拡大図である。
ダイパック(6)の出口(23)から押し出された溶融
状態のシート状物(37)は、少なくとも1対の成形ロ
ール(10)の間に挟まれながらバンク(38)を形成
し、シートの表面状態及びシート厚等が均一に成形され
る。
The cross-sectional shape of the plurality of flow paths (31) is desirably a simple shape such as a circle from the viewpoint of ease of manufacture. However, if necessary, the cross-sectional shape may be oblong, rectangular, or any other irregular cross-sectional shape. It can also be. Furthermore, various cross-sectional shapes may be combined and arranged. FIG.
It is a partially enlarged view of the YZ section of a forming roll group (10).
The molten sheet material (37) extruded from the outlet (23) of the die pack (6) forms a bank (38) while being sandwiched between at least one pair of forming rolls (10), and forms a surface of the sheet. The state, sheet thickness, etc. are formed uniformly.

【0017】成形ロールによる賦形時には、バンク内の
YZ断面において反転うず流が発生し、これが樹脂条B
を変形させたり、乱れさせたりする。また、シートの幅
方向(X方向)への二次的な流れが発生し、樹脂条Bの
Y方向に対する角度を幅方向(X方向)にわたって均一
に保持することを困難にする。このような流れによる変
形や乱れを抑制するために、本発明では、複合樹脂流形
成部(22)と複合樹脂流出口(23)の途中の複合樹
脂流路(21)内に第3の樹脂c用の吐出口(51)を
設け、複合樹脂流形成部で形成された複合樹脂流の厚み
方向(Y方向)の少なくとも一方の側に樹脂層をさらに
1層積層可能な構造とする。すなわち、このようにして
積層された樹脂cの層の部分がバンク側にくるようにす
ることにより、バンクの影響が防止できる。樹脂cの層
の厚みは、樹脂条Bがバンクの影響を防止できる程度に
調整される。
During shaping by a forming roll, a reverse eddy current is generated in the YZ section in the bank, and this
To deform or disturb. In addition, a secondary flow occurs in the sheet width direction (X direction), which makes it difficult to uniformly maintain the angle of the resin strip B with respect to the Y direction in the width direction (X direction). In order to suppress the deformation and turbulence due to such a flow, in the present invention, the third resin is provided in the composite resin flow path (21) in the middle of the composite resin flow forming part (22) and the composite resin outlet (23). A discharge port (51) for c is provided so that a resin layer can be further laminated on at least one side in the thickness direction (Y direction) of the composite resin flow formed in the composite resin flow forming portion. That is, the influence of the bank can be prevented by setting the layer portion of the resin c thus laminated to the bank side. The thickness of the layer of the resin c is adjusted so that the resin strip B can prevent the influence of the bank.

【0018】本発明に用いる樹脂aとしては、例えば、
ポリカーボネート、ポリスチレン、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、ポリプロピレン、ポリエチレン、フ
ッ素樹脂、ジエン樹脂、これらの共重合体、あるいはブ
レンド樹脂等が用いられる。遮光シートや視界制御シー
トのような透明性、耐候性が要求されるものではアクリ
ル樹脂が特に好ましい材料といえる。
As the resin a used in the present invention, for example,
Acrylic resins such as polycarbonate, polystyrene, polyvinyl chloride, polyethylene terephthalate, and polymethyl methacrylate, polypropylene, polyethylene, fluororesins, diene resins, copolymers thereof, and blend resins are used. Acrylic resin is a particularly preferable material for materials requiring transparency and weather resistance, such as a light shielding sheet and a visibility control sheet.

【0019】樹脂bとしては、上記に例示した樹脂と同
様の樹脂を用いることができる。特に視界制御性を付与
するためには、樹脂bにカーボンブラックや酸化チタ
ン、その他の有機、無機の染料や顔料を添加して用いる
ことができる。樹脂cとしては、樹脂aと同様の樹脂を
使用することができる。樹脂cは、樹脂aと同一の樹脂
であってもよく、あるいは異なる樹脂であってもよい。
As the resin b, the same resins as those exemplified above can be used. In particular, in order to impart visibility controllability, carbon black, titanium oxide, and other organic and inorganic dyes and pigments can be added to the resin b. The same resin as the resin a can be used as the resin c. The resin c may be the same resin as the resin a, or may be a different resin.

【0020】また、導光板や光拡散板等には樹脂a、樹
脂bの屈折率が異なる樹脂を用いることができる。
The light guide plate and the light diffusion plate can be made of a resin a and a resin b having different refractive indices.

【0021】[0021]

【実施例】以下、実施例により本発明をさらに説明す
る。 実施例1 樹脂aとしてポリメチルメタクリレート(三菱レイヨン
製、アクリペット)を用意し、樹脂bとしてポリメチル
メタクリレート(同上)にカーボンブラックを混練した
ものを用意した。また、樹脂cとして樹脂aと同じ樹脂
を用いた。
The present invention will be further described with reference to the following examples. Example 1 Polymethyl methacrylate (Acrypet, manufactured by Mitsubishi Rayon Co., Ltd.) was prepared as a resin a, and a mixture of carbon black and polymethyl methacrylate (same as above) was prepared as a resin b. The same resin as the resin a was used as the resin c.

【0022】図1〜図7に示す構造を有する押出成形装
置を用いた。複数の流路(31)は吐出口の内径が0.
2mmで、吐出口中心相互の間隔は1mmであった。部
分RmとLmの高さΔRmとΔLmを、それぞれ、0.
1mm、部分RnとLnの高さΔRnとΔLnを1.5
mmとし、部分RmとLmの幅を0.5mm、部分Rn
とLnの幅を0.5mmとした。また、複合樹脂流形成
部(22)のY方向の厚みを1mm、複合樹脂流出口
(23)のY方向の厚みを3mmとした。また、樹脂c
用の吐出口(51)の間隔は1mmで、スリット状とし
た。さらに、流路(41)及び流路(42)のYZ平面
に対する傾斜角αをそれぞれ0度とした。
An extruder having the structure shown in FIGS. 1 to 7 was used. In the plurality of flow paths (31), the inner diameter of the discharge port is 0.
The distance between the centers of the discharge ports was 1 mm. The heights ΔRm and ΔLm of the portions Rm and Lm are respectively set to 0.
1 mm, the heights ΔRn and ΔLn of the portions Rn and Ln are 1.5
mm, the width of the portions Rm and Lm is 0.5 mm, and the portion Rn
And Ln were set to 0.5 mm in width. The thickness of the composite resin flow forming portion (22) in the Y direction was 1 mm, and the thickness of the composite resin outlet (23) in the Y direction was 3 mm. In addition, resin c
The interval between the discharge ports (51) was 1 mm, and was formed in a slit shape. Further, the inclination angles α of the flow path (41) and the flow path (42) with respect to the YZ plane were each set to 0 degree.

【0023】樹脂aを第1押出機(1)中で溶融して基
体樹脂ノズル(9)に供給し、一方樹脂bを第2押出機
(2)中で溶融混練し、分配ノズル(7)、樹脂条賦形
ノズル(8)を通過させて複数の流路(31)より吐出
した。さらに、樹脂aの流路から分配された樹脂cを吐
出口(51)から吐出させた。賦形温度を250℃とし
て樹脂aと樹脂bを同時押出しして、3mm厚×50c
m幅の複合樹脂シートを連続的に製造した。
The resin a is melted in the first extruder (1) and supplied to the base resin nozzle (9), while the resin b is melted and kneaded in the second extruder (2), and is distributed to the distribution nozzle (7). The liquid was discharged from a plurality of flow paths (31) through a resin forming nozzle (8). Further, the resin c distributed from the flow path of the resin a was discharged from the discharge port (51). Resin a and resin b are co-extruded at a shaping temperature of 250 ° C. and 3 mm thick × 50 c
An m-width composite resin sheet was continuously manufactured.

【0024】得られたシートは、図9に示すように、透
明な基体樹脂シート(樹脂層A)中に鮮明なブラックス
トライプ模様を有する複合シートであり、樹脂条Bの厚
みkは0.1〜0.15mm、幅hは1.5mmであ
り、複合シート面に対する角度は90°であった。ま
た、各樹脂条の中心間の間隔は1mmであった。サンシ
ャインウェザーメーターによる83℃雨降りの条件で5
00時間暴露する耐候性試験を実施したところ、樹脂a
の層は無色透明のままであった。
The resulting sheet is a composite sheet having a clear black stripe pattern in a transparent base resin sheet (resin layer A) as shown in FIG. 0.10.15 mm, the width h was 1.5 mm, and the angle to the composite sheet surface was 90 °. The distance between the centers of the resin strips was 1 mm. 5 at 83 ° C rainfall condition by sunshine weather meter
When a weather resistance test of exposing for 00 hours was performed, resin a
Layer remained colorless and transparent.

【0025】実施例2 実施例1の操作を繰り返した。ただし、本例では、複数
の流路(31)は吐出口の内径は0.2mmで、吐出口
中心相互の間隔は0.5mmであった。また、部分Rm
とLmの高さΔRmとΔLmを、それぞれ、0mm、部
分RnとLnの高さΔRnとΔLnを1.5mmとし、
部分RmとLmの幅を0.35mm、部分RnとLnの
幅を0.15mmとした。さらに、複合樹脂流形成部
(22)のY方向の厚みを1mm、複合樹脂流出口(2
3)のY方向の厚みを3mmとし、流路(41)及び
(42)のYZ平面に対する傾斜角αをそれぞれ45度
とした。
Example 2 The procedure of Example 1 was repeated. However, in this example, the inner diameter of the discharge ports of the plurality of flow paths (31) was 0.2 mm, and the distance between the centers of the discharge ports was 0.5 mm. Also, the part Rm
The heights ΔRm and ΔLm of Lm and Lm are 0 mm, respectively, and the heights ΔRn and ΔLn of the portions Rn and Ln are 1.5 mm,
The width of the portions Rm and Lm was 0.35 mm, and the width of the portions Rn and Ln was 0.15 mm. Further, the thickness of the composite resin flow forming portion (22) in the Y direction is 1 mm, and the composite resin flow outlet (2
3) The thickness in the Y direction was 3 mm, and the inclination angles α of the flow paths (41) and (42) with respect to the YZ plane were each 45 degrees.

【0026】得られたシートは、図10に示すように、
透明な基体樹脂シート(樹脂層A)中に鮮明なブラック
ストライプ模様を有する複合シートであり、樹脂条Bの
厚みkは0.1〜0.15mm、幅hは1.5mmであ
り、複合シート面に対する角度は60°であった。ま
た、各樹脂条の中心間の間隔は0.5mmであった。サ
ンシャインウェザーメーターによる83℃雨降りの条件
で500時間暴露する耐候性試験を実施したところ、樹
脂aの層は無色透明のままであった。
The obtained sheet is as shown in FIG.
A composite sheet having a clear black stripe pattern in a transparent base resin sheet (resin layer A), wherein the resin strip B has a thickness k of 0.1 to 0.15 mm, a width h of 1.5 mm, and a composite sheet. The angle to the plane was 60 °. The distance between the centers of the resin strips was 0.5 mm. When a weather resistance test was performed by exposing to a sunshine weather meter at 83 ° C. for 500 hours under rainfall conditions, the layer of the resin a remained colorless and transparent.

【0027】[0027]

【発明の効果】本発明の装置及び方法によれば、基体樹
脂シート中に目的とする形状、サイズの樹脂条が埋設さ
れた、全体が平滑で、高級な意匠性や、遮光性、視界制
御性などの光学的機能が付与された複合シートを得るこ
とができる。
According to the apparatus and method of the present invention, a resin strip having a desired shape and size is embedded in a base resin sheet, and the whole is smooth, high-grade design, light shielding, and visibility control. It is possible to obtain a composite sheet provided with an optical function such as a property.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の押出成形装置の一態様を示す模式平面
図。
FIG. 1 is a schematic plan view showing one embodiment of an extrusion molding apparatus of the present invention.

【図2】図3の装置の模式側面図。FIG. 2 is a schematic side view of the apparatus of FIG.

【図3】図1の押出成形装置における複合樹脂流の形成
及び押出装置部分の内部構造の一例を示す模式断面図。
3 is a schematic cross-sectional view showing an example of the formation of a composite resin flow and an internal structure of an extruding device in the extrusion molding device of FIG.

【図4】図3におけるI−I線の矢視断面図。FIG. 4 is a sectional view taken along the line II in FIG. 3;

【図5】図4におけるII−II線方向からの斜視図。FIG. 5 is a perspective view taken along the line II-II in FIG. 4;

【図6】図4におけるIII −III 線の矢視断面図。FIG. 6 is a sectional view taken along line III-III in FIG. 4;

【図7】図6におけるIV−IV線の矢視断面図。FIG. 7 is a sectional view taken along line IV-IV in FIG. 6;

【図8】実施例2の操作における樹脂条Bの変形機構を
示す模式説明図。
FIG. 8 is a schematic explanatory view showing a deformation mechanism of a resin strip B in the operation of the second embodiment.

【図9】実施例1で得られた複合樹脂シートの断面図。FIG. 9 is a cross-sectional view of the composite resin sheet obtained in Example 1.

【図10】実施例2で得られた複合樹脂シートの断面
図。
FIG. 10 is a cross-sectional view of the composite resin sheet obtained in Example 2.

【図11】図3の装置に流路縮小用口金を装着した態様
を示す模式断面図。
FIG. 11 is a schematic cross-sectional view showing a mode in which a channel reduction base is mounted on the apparatus of FIG. 3;

【図12】成形ロール部のYZ断面図。FIG. 12 is a YZ sectional view of a forming roll portion.

【符号の説明】[Explanation of symbols]

5…賦形ヘッド 6…ダイパック 10…成形ロール群 21…複合樹脂流路 22…複合樹脂流形成部 23…複合樹脂流出口 31…樹脂条用樹脂bの流路 37…シート状物 38…溶融樹脂の溜まり(バンク) 41、42…樹脂aの流路 51…樹脂c用の吐出口 DESCRIPTION OF SYMBOLS 5 ... Shaping head 6 ... Die pack 10 ... Forming roll group 21 ... Composite resin flow path 22 ... Composite resin flow forming part 23 ... Composite resin outlet 31 ... Flow path of resin b for resin strip 37 ... Sheet-like material 38 ... Melting Resin pools (banks) 41, 42: Flow path for resin a 51: Discharge port for resin c

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 X方向に所定の幅、Y方向に所定の厚み
及びZ方向に所定の長さを有し、Z方向の一端に配置さ
れた複合樹脂流形成部(22)において、 樹脂条B用の樹脂bをZ方向に向かって流出させるため
の、所定間隔をもって配置された複数の流路(31)及
びXZ平面の両側からYZ平面に対して所定の角度α
(零を含む)をもって、複合流形成部(22)に樹脂層
A用の樹脂aを流入させるための2列の流路(41、4
2)を含み、 流路(41、42)はXZ断面においてZ方向の高さが
大きい部分Rn及びLnとZ方向の高さが小さい部分
(零を含む)Rm及びLmとが交互に配置された形状を
有しており、複数の流路(31)のそれぞれが部分Rm
及びLmと対向する位置に配置されており、 Z方向の他端にはY方向に所定の厚みを有する複合樹脂
流出口(23)が設けられ、複合樹脂流形成部(22)
から複合樹脂流出口(23)に至る複合樹脂流路(2
1)におけるY方向の厚みが複合樹脂流形成部(22)
から複合樹脂流出口(23)に向かって増加しており、 複合樹脂流路(21)の複合樹脂流形成部(22)と複
合樹脂流出口(23)との中間部に、複合樹脂流路(2
1)の両側または片側から複合樹脂流路(21)に向け
て第3の樹脂cを吐出させるための、X方向に延在する
吐出口(51)が具備された複合樹脂シートの製造装
置。
1. A composite resin flow forming portion (22) having a predetermined width in the X direction, a predetermined thickness in the Y direction, and a predetermined length in the Z direction and disposed at one end in the Z direction. A plurality of flow paths (31) arranged at predetermined intervals for allowing the resin b for B to flow in the Z direction, and a predetermined angle α with respect to the YZ plane from both sides of the XZ plane.
(Including zero), two rows of flow paths (41, 4) for allowing the resin a for the resin layer A to flow into the composite flow forming section (22).
In the flow path (41, 42), portions Rn and Ln having a large height in the Z direction and portions (including zero) Rm and Lm having a small height in the Z direction in the XZ section are alternately arranged. And each of the plurality of flow paths (31) has a portion Rm
And a composite resin outflow port (23) having a predetermined thickness in the Y direction at the other end in the Z direction, and a composite resin flow forming section (22).
Resin flow path (2) from the resin to the composite resin outlet (23)
The thickness in the Y direction in 1) is such that the composite resin flow forming portion (22)
To the composite resin outlet (23). The composite resin flow path (21) has a composite resin flow path at an intermediate portion between the composite resin flow forming part (22) and the composite resin flow outlet (23). (2
1) A composite resin sheet manufacturing apparatus provided with a discharge port (51) extending in the X direction for discharging the third resin c from both sides or one side toward the composite resin flow path (21).
【請求項2】 部分Rn及びLnのX方向の幅が複数の
流路(31)の間隔の1/2以下である、請求項1記載
の複合樹脂シートの製造装置。
2. The composite resin sheet manufacturing apparatus according to claim 1, wherein the width in the X direction of the portions Rn and Ln is equal to or less than の of the interval between the plurality of flow paths.
【請求項3】 請求項1または2に記載の装置を用い、 樹脂条B用の樹脂bを複数の流路(31)から複合樹脂
流形成部(22)に流入させるとともに、樹脂層A用の
樹脂aを2列の流路(41、42)から複合樹脂流形成
部(22)に流入させて複合樹脂流を形成し、さらに樹
脂cを吐出口(51)から複合樹脂流路(21)に流入
させて、これらの樹脂を合流させ、次いで複合樹脂流出
口(23)から溶融状態のシート状物として流出させ、 このシート状物を少なくとも1対の成形ロール間に挟み
込み、シート状物の面と成形ロール間に溶融樹脂の溜ま
りを形成しつつ押出板に成形することを含む複合樹脂シ
ートの製造方法。
3. An apparatus according to claim 1, wherein the resin b for the resin strip B flows into the composite resin flow forming section (22) from the plurality of flow paths (31) and the resin layer A for the resin layer A. Of resin a from the two rows of flow paths (41, 42) into the composite resin flow forming section (22) to form a composite resin flow, and further, resin c is discharged from the discharge port (51) to the composite resin flow path (21). ), The resins are combined, and then discharged as a molten sheet from the composite resin outlet (23). The sheet is sandwiched between at least one pair of forming rolls to form a sheet. A method for producing a composite resin sheet, comprising forming a pool of molten resin between a surface of a sheet and a forming roll and forming the same into an extruded plate.
JP10036114A 1998-02-18 1998-02-18 Apparatus and method for producing composite resin sheet Pending JPH11227023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10036114A JPH11227023A (en) 1998-02-18 1998-02-18 Apparatus and method for producing composite resin sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10036114A JPH11227023A (en) 1998-02-18 1998-02-18 Apparatus and method for producing composite resin sheet

Publications (1)

Publication Number Publication Date
JPH11227023A true JPH11227023A (en) 1999-08-24

Family

ID=12460762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10036114A Pending JPH11227023A (en) 1998-02-18 1998-02-18 Apparatus and method for producing composite resin sheet

Country Status (1)

Country Link
JP (1) JPH11227023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011098504A (en) * 2009-11-05 2011-05-19 Excel Tokai Co Ltd Composite resin panel and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011098504A (en) * 2009-11-05 2011-05-19 Excel Tokai Co Ltd Composite resin panel and method for manufacturing the same

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