JPH07137130A - Method for extrusion molding of synthetic resin sheet - Google Patents
Method for extrusion molding of synthetic resin sheetInfo
- Publication number
- JPH07137130A JPH07137130A JP5290379A JP29037993A JPH07137130A JP H07137130 A JPH07137130 A JP H07137130A JP 5290379 A JP5290379 A JP 5290379A JP 29037993 A JP29037993 A JP 29037993A JP H07137130 A JPH07137130 A JP H07137130A
- Authority
- JP
- Japan
- Prior art keywords
- cooling roll
- synthetic resin
- resin sheet
- glossiness
- 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
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光沢度を細かく調整で
きる合成樹脂シ−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 a synthetic resin sheet whose glossiness can be finely adjusted.
【０００２】[0002]
【従来の技術】合成樹脂シ−トの用途は広範囲であり、
例えば、住宅や構造物のパネルに、更には、真空成形等
の後成形により所定の立体形状に加工される各種の製品
に使用されている。2. Description of the Related Art The applications of synthetic resin sheets are wide-ranging,
For example, it is used for panels of houses and structures, and also for various products that are processed into a predetermined three-dimensional shape by post-forming such as vacuum forming.
【０００３】従来、合成樹脂シ−ト、例えば、塩化ビニ
ル樹脂シ−トの成形には、押出成形法が広く使用されて
いる。この押出成形法においては、押出金型から樹脂を
帯状に押出し、この帯状樹脂を多段冷却ロ−ル群（ポリ
シングロ−ル）に通してガラス転移点（または、軟化
点）よりもやや高い温度にまで冷却し、更に、移送冷却
部に通過させ徐冷して帯状樹脂を引取りロ−ルの挾持力
に耐えうる固さにまで冷却し、ついで、引取りロ−ルで
引取っている。In the past, extrusion molding has been widely used for molding synthetic resin sheets such as vinyl chloride resin sheets. In this extrusion molding method, a resin is extruded in a band shape from an extrusion die, and the band-shaped resin is passed through a multi-stage cooling roll group (polishing roll) to obtain a temperature slightly higher than the glass transition point (or softening point). The strip-shaped resin is cooled to a hardness that can withstand the holding force of the take-up roll, and then taken by the take-up roll. .
【０００４】この場合、押出し直後の帯状樹脂を多段冷
却ロ−ル群に通過させる過程は、帯状樹脂を移送冷却部
での移送に耐え得る強度にまで固化し、かつ、帯状樹脂
のダイスエルを圧縮吸収するうえに不可欠なものであ
る。In this case, in the process of passing the band-shaped resin immediately after extrusion through the multi-stage cooling roll group, the band-shaped resin is solidified to a strength that can withstand the transfer in the transfer cooling section, and the die swell of the band-shaped resin is compressed. It is essential for absorption.
【０００５】上記押出成形法により得られる合成樹脂シ
−トにおいては、表面平滑なポリシクグロ−ルにより平
滑な表皮層が形成されるから、光沢度が大である。而る
に、合成樹脂製品の用途によっては、光沢度を低くする
ことが要求され、上記の押出成形法において、艶消し剤
を配合した樹脂組成物を使用して合成樹脂シ−トの光沢
度を低くすることが公知である。例えば、塩化ビニル樹
脂シ−トの押出成形において、架橋塩化ビニル樹脂粒を
配合した塩化ビニル樹脂組成物を使用することが公知で
ある。The synthetic resin sheet obtained by the above-mentioned extrusion molding method has a large glossiness because a smooth skin layer is formed by the smooth surface of the polysic chlor. Therefore, depending on the use of the synthetic resin product, it is required to reduce the glossiness, and in the above extrusion molding method, the glossiness of the synthetic resin sheet is obtained by using the resin composition containing the matting agent. Is known to be low. For example, it is known to use a vinyl chloride resin composition containing crosslinked vinyl chloride resin particles in extrusion molding of a vinyl chloride resin sheet.
【０００６】この艶消し剤による合成樹脂シ−トの艶消
しは、艶消し剤が微粒子状のままで樹脂中に分散され、
シ−ト表面がその微粒子の突出により微細に凹凸化され
る結果である。しかしながら、このようにして艶消しし
たシ−トも、真空成形すると、金型面による成形体の表
面平滑化に加え、金型温度による可塑剤の表面移行のた
めに、艶が出てくるので、艶消しの真空成形品を得るに
は、多量の艶消し剤の配合が必要である。Matting of a synthetic resin sheet with this matting agent is carried out by dispersing the matting agent in the resin in the form of fine particles.
This is the result that the sheet surface is finely roughened by the protrusion of the fine particles. However, even if the sheet thus matted is vacuum-molded, in addition to the smoothing of the surface of the molded body by the mold surface, the surface of the plasticizer is transferred depending on the mold temperature, so that the matte sheet becomes glossy. In order to obtain a matt vacuum molded product, it is necessary to blend a large amount of matting agent.
【０００７】図４は、艶消し剤としての架橋塩化ビニル
樹脂粒の配合量を変えた塩化ビニル樹脂組成物でシ−ト
を押出成形し、このシ−トを２００℃にて真空成形で成
形した場合のその真空成形品の光沢度と冷却ロ−ルの温
度との関係を示している。In FIG. 4, a sheet is extruded from a vinyl chloride resin composition in which the amount of crosslinked vinyl chloride resin particles as a matting agent is changed, and this sheet is vacuum formed at 200 ° C. It shows the relationship between the glossiness of the vacuum formed product and the temperature of the cooling roll in the case of performing.
【０００８】図４において、冷却ロ−ル温度が通常の１
２０℃の場合、真空成形品の光沢度を４０％の実質上の
艶消し外観にするには、塩化ビニル樹脂１００重量部に
対し３０重量部もの艶消し剤を配合する必要がある。し
かし、かかる多量の艶消し剤の配合のもとでは、製品の
物理的、並びに化学的特性の著しい変化が避けられず、
また、材料費の高コスト化も余儀なくされる。In FIG. 4, the cooling roll temperature is normal 1
At 20 ° C., 30 parts by weight of a matting agent needs to be added to 100 parts by weight of the vinyl chloride resin in order to obtain a substantially matte appearance of 40% in the vacuum molded product. However, in the case of blending such a large amount of matting agent, a significant change in the physical and chemical properties of the product cannot be avoided,
In addition, high material costs are inevitable.
【０００９】本出願人においては、上記の押出成形法に
よりライニング用の合成樹脂シ−トを成形する場合、接
着ライニングに対するアンカ−効果を期待できる程度の
凹凸をシ−ト片面に形成するために、上記３段の冷却ロ
−ルの一本をエンボス冷却ロ−ルとすることを既に提案
した（特開平５−１３１５４２号）。そして、本発明者
においては、このエンボスロ−ルの凹凸度と成形シ−ト
凹凸面の光沢度との関係について種々の実験により検討
したところ、エンボスロ−ルの凹凸を細かくすれば、梨
地仕上げ（サティナイジング）程度の低い光沢度の合成
樹脂シ−トを成形できることを知った。In the present applicant, when molding a synthetic resin sheet for lining by the above-mentioned extrusion molding method, in order to form unevenness on one side of the sheet to the extent that an anchor effect for the adhesive lining can be expected. It has already been proposed to use one of the above three-stage cooling rolls as an embossed cooling roll (Japanese Patent Laid-Open No. 5-131542). Then, the present inventor examined the relationship between the unevenness of the embossing roll and the glossiness of the uneven surface of the molding sheet by various experiments, and if the unevenness of the embossing roll was made fine, a satin finish ( I have learned that it is possible to mold synthetic resin sheets with low glossiness (saturating).
【００１０】[0010]
【発明が解決しようとする課題】而るに、車両等の輸送
機材や住宅設備の分野で使用される合成樹脂シ−トやそ
の後成形品においては、触感・装飾性等に優れた高級感
を達成するために、低光沢度のもとで微妙に光沢感の異
なる外観が求められている。しかしながら、エンボスロ
−ルの凹凸の微調整によって押出成形品の光沢度を調節
するには、多種類のエンボスロ−ルの交換を必要とし、
至難である（冷却ロ−ル内の冷却通路と外部の冷却通路
の連通のために、冷却ロ−ルの軸受構造が著しく複雑で
あって、冷却ロ−ルの交換に多大な時間と労力を必要と
する）。However, synthetic resin sheets used in the fields of transportation equipment such as vehicles and housing equipment, and molded products after that, have a high-class feeling excellent in touch and decoration. In order to achieve this, an appearance with a slightly different gloss feeling under low gloss is required. However, in order to adjust the glossiness of the extruded product by finely adjusting the unevenness of the embossing roll, it is necessary to replace many types of embossing rolls,
It is extremely difficult (because of the communication between the cooling passage inside the cooling roll and the external cooling passage, the bearing structure of the cooling roll is extremely complicated, and it takes a lot of time and effort to replace the cooling roll. I need).
【００１１】本発明の目的は、合成樹脂シ−トの押出成
形において、押出直後での冷却を行う冷却ロ−ル群の一
つの冷却ロ−ルにエンボス冷却ロ−ルを使用し、このエ
ンボス冷却ロ−ルで合成樹脂シ−ト片面の光沢度を低く
する場合、エンボス冷却ロ−ルを交換することなく容易
にその合成樹脂シ−ト片面の光沢度を細かく調節できる
合成樹脂シ−トの押出成形方法を提供することにある。An object of the present invention is to use an emboss cooling roll as one of the cooling rolls for cooling immediately after extrusion in extrusion molding of synthetic resin sheet. When lowering the gloss on one side of a synthetic resin sheet with a cooling roll, the synthetic resin sheet can easily finely adjust the gloss on one side of the synthetic resin sheet without replacing the embossing cooling roll. To provide an extrusion molding method.
【００１２】[0012]
【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、押出金型からの帯状樹脂を、１箇の
冷却ロ−ルをエンボスロ−ルにした３箇一組の冷却ロ−
ル群に通過させて片面の光沢度を低くした合成樹脂シ−
トを成形する方法において、上記エンボス冷却ロ−ルと
隣り合わせの他の冷却ロ−ルとの相対的位置を調整し
て、上記合成樹脂シ−ト片面の光沢度を調節することを
特徴とする構成である。The extrusion molding method for a synthetic resin sheet according to the present invention comprises a set of three strips of resin extruded from an extrusion die, in which one cooling roll is embossed. Cooling roll
Synthetic resin sheet with low gloss on one side
In the method of molding a sheet, the relative position between the embossed cooling roll and another adjacent cooling roll is adjusted to adjust the glossiness of one side of the synthetic resin sheet. It is a composition.
【００１３】以下、図面を参照しつつ本発明の構成を説
明する。図１は本発明において使用する合成樹脂シ−ト
の製造装置の一例の概略を示している。The structure of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows an example of a synthetic resin sheet manufacturing apparatus used in the present invention.
【００１４】図１において、１は押出機である。２はシ
−ト成形用の押出金型であり、例えば、Ｔ型マニホ−ル
ドダイが使用される。３は押出金型２の直後に設置した
３本一組の冷却ロ−ル群であり、表面が平滑で内部に冷
却通路（通過される帯状樹脂の温度よりも低い温度の加
熱油、温水等が流通される）を有する下段冷却ロ−ル３
１と上段冷却ロ−ル３３並びに表面が微細な凹凸面で内
部に冷却通路を有する中段のエンボス冷却ロ−ル３２と
から構成し、エンボス冷却ロ−ル３２と隣りの他の冷却
ロ−ル３３との相対的位置を調整可能としてある。図示
の例では、上段の平滑冷却ロ−ル３３を中段のエンボス
冷却ロ−ル３２に対し一定のギャップを保って矢印ａ方
向にスイング可能としてある。４は冷却ロ−ル群３の直
後に設置した移送冷却部であり、所定の間隔で移送ロ−
ルを並設し、移送ロ−ルによる移送中に、自然放熱冷却
または空気送風、水スプレ−等による強制冷却を行うこ
とを可能にする構成である。５は引取りロ−ルである。In FIG. 1, 1 is an extruder. Reference numeral 2 is an extrusion die for sheet molding, and for example, a T-type manifold die is used. 3 is a set of three cooling rolls installed immediately after the extrusion die 2, and has a smooth surface and a cooling passage inside (heating oil, hot water, etc. having a temperature lower than the temperature of the band-shaped resin passed through). Lower cooling roll 3 having
1 and an upper stage cooling roll 33, and an embossing cooling roll 32 in the middle stage having a fine uneven surface and a cooling passage inside, and another cooling roll adjacent to the embossing cooling roll 32. The relative position with respect to 33 is adjustable. In the illustrated example, the upper smoothing cooling roll 33 can be swung in the direction of arrow a while maintaining a constant gap with respect to the middle embossing cooling roll 32. Reference numeral 4 denotes a transfer cooling unit installed immediately after the cooling roll group 3, which is a transfer roller at a predetermined interval.
This is a configuration in which the rolls are arranged side by side and it is possible to perform natural heat radiation cooling or forced cooling by air blowing, water spraying, etc. during transfer by the transfer roll. 5 is a take-up roll.
【００１５】本発明により合成樹脂シ−トを成形するに
は、押出金型２から樹脂を帯状に押出し、この帯状樹脂
を冷却ロ−ル群３に通過させ、この通過時、帯状樹脂の
片面をエンボスロ−ル３２で粗面化し、更に、移送冷却
部４を通過させ、次いで、引取りロ−ル５で引き取って
いき、この場合、上段冷却ロ−ル３３の位置を、図２の
（イ）〜（ハ）に示すように調整しつつ、合成樹脂シ−
トのエンボス面の光沢度を調節して、所定の光沢度に設
定する。In order to mold the synthetic resin sheet according to the present invention, the resin is extruded in the form of a strip from the extrusion die 2, the strip of the resin is passed through the cooling roll group 3, and at this time, one side of the strip of the resin is passed. 2 is roughened by an embossing roll 32, further passed through a transfer cooling section 4, and then taken by a take-up roll 5. In this case, the position of the upper-stage cooling roll 33 is changed to that shown in FIG. B) Adjust the synthetic resin sheet while adjusting as shown in (c).
The glossiness of the embossed surface of the sheet is adjusted to set the glossiness.
【００１６】上記において、帯状樹脂が冷却ロ−ル３を
通過する間、帯状樹脂が樹脂のガラス転移点または軟化
点よりもやや高い温度にまで冷却され、更に、移送冷却
部４を通過する間に徐冷されて熱歪の実質上の発生なく
引取りロ−ル５の挾持力に耐え得る固さにまで冷却さ
れ、ついで、引取りロ−ル５で引き取られていく。In the above, while the belt-shaped resin passes through the cooling roll 3, the belt-shaped resin is cooled to a temperature slightly higher than the glass transition point or the softening point of the resin, and further while passing through the transfer cooling section 4. It is gradually cooled to a hardness that can withstand the holding force of the take-up roll 5 without substantially causing thermal strain, and then taken up by the take-up roll 5.
【００１７】而して、帯状樹脂がエンボス冷却ロ−ル３
２に接触する際、樹脂の熱軟化状態が充分に保持されて
いるから、その接触面がエンボス冷却ロ−ル３２により
凹凸化され、その接触時間が長いほど、凹凸化がよく進
行されるから、図２の（イ）乃至（ハ）に示すそれぞれ
の場合では、その凹凸化の強弱により表面荒さが異な
る。Thus, the belt-shaped resin is embossed cooling roll 3
Since the heat-softened state of the resin is sufficiently maintained when contacting with 2, the contact surface is roughened by the emboss cooling roll 32, and the longer the contact time, the better the roughening progresses. In each of the cases (a) to (c) of FIG. 2, the surface roughness differs depending on the strength of the unevenness.
【００１８】図３において、点イ、ロ並びにハは冷却ロ
−ル温度が同じＴ1℃である場合、上段冷却ロ−ル３３
が図２の（イ）に示す位置（角度θが１８０0）にある
ときの合成樹脂シ−トのエンボス面の光沢度、上段冷却
ロ−ル３３が図２の（ロ）に示す位置（角度θが１３５
0）にあるときの合成樹脂シ−トのエンボス面の光沢度
並びに上段冷却ロ−ル３３が図２の（ハ）に示す位置
（角度θが９０0）にあるときの合成樹脂シ−トのエン
ボス面の光沢度をそれぞれ示しており、これらの点イ、
ロ、ハを結ぶ線Ｌ1から、冷却ロ−ル群３の温度がＴ1℃
である時の上段冷却ロ−ル３３の位置（角度θ）と成形
合成樹脂シ−トのエンボス面の光沢度との関係を推定で
きる。而して、上段冷却ロ−ル３３の位置を連続的に変
化させることは、容易であり、この連続的変化に追従し
て合成樹脂シ−トのエンボス面の光沢度が変化していく
から、上段冷却冷却ロ−ルの位置（エンボス冷却ロ−ル
と隣りの他の冷却ロ−ルとの相対的位置）の調整によっ
て合成樹脂シ−トの片面（エンボス面）の光沢度を所望
値に容易に設定できる。In FIG. 3, points a, b, and c are upper cooling rolls 33 when the cooling roll temperatures are the same T 1 ° C.
Is at the position shown in FIG. 2A (angle θ is 180 0 ), the glossiness of the embossed surface of the synthetic resin sheet, and the upper cooling roll 33 is at the position shown in FIG. Angle θ is 135
0 ), the glossiness of the embossed surface of the synthetic resin sheet and the synthetic resin sheet when the upper cooling roll 33 is at the position (angle θ 90 0 ) shown in FIG. The glossiness of the embossed surface of
From the line L 1 connecting (b) and (c), the temperature of the cooling roll group 3 is T 1 ° C.
Then, the relationship between the position (angle θ) of the upper cooling roll 33 and the glossiness of the embossed surface of the molded synthetic resin sheet can be estimated. Thus, it is easy to continuously change the position of the upper cooling roll 33, and the glossiness of the embossed surface of the synthetic resin sheet changes in accordance with this continuous change. By adjusting the position of the upper cooling / cooling roll (the relative position between the embossing cooling roll and another adjacent cooling roll), the glossiness of one side (embossing side) of the synthetic resin sheet can be set to a desired value. Can be set easily.
【００１９】上記において、合成樹脂シ−トのエンボス
が緩い（あまい）ほど、シ−ト表面が平滑面に近づいて
艶が現れ、同エンボスがきついほど、艶がよく消えるか
ら、冷却ロ−ル群の温度を高くし帯状樹脂の温度を高く
して、樹脂を柔らかくするほど、光沢度を低くできる。
図３において、直線Ｌ2は冷却ロ−ル温度３が上記Ｔ1℃
よりも高いＴ2℃の場合の冷却ロ−ルの相対的位置（角
度θ）と成形合成樹脂シ−トのエンボス面の光沢度との
関係を、直線Ｌ0は冷却ロ−ル温度が上記Ｔ1℃よりも低
いＴ0℃の場合の冷却ロ−ルの相対的位置（角度θ）と
成形合成樹脂シ−トのエンボス面の光沢度との関係をそ
れぞれ示しており、本発明の実施においては、冷却ロ−
ルの相対的位置の調整に加え、冷却ロ−ル温度の調整を
補助的に使用することも可能であり（冷却ロ−ル温度の
調整を細かく行うことは困難であり、冷却ロ−ル温度の
調整のみでは、合成樹脂シ−トの光沢度を微調整するこ
とは難しい）、かくすることにより、合成樹脂シ−トの
片面の光沢度をより一層に細かく調節できる。In the above, the looser (sweeter) the emboss of the synthetic resin sheet is, the closer the surface of the sheet is to a smooth surface, and the gloss appears, and the tighter the emboss, the better the gloss disappears. The higher the temperature of the group and the temperature of the belt-shaped resin to soften the resin, the lower the glossiness can be.
In FIG. 3, a straight line L 2 indicates that the cooling roll temperature 3 is the above T 1 ° C.
In the case of high T 2 ° C. than the cooling Russia - relative position of the Le (angle theta) and the molded synthetic resin sheet - the relationship between the gloss of embossed surface of bets, the straight line L 0 is cooled Russia - le temperature above The relationship between the relative position (angle θ) of the cooling roll and the glossiness of the embossed surface of the molded synthetic resin sheet in the case of T 0 ° C lower than T 1 ° C is shown respectively, and the present invention is carried out. In the cooling
In addition to adjusting the relative position of the cooling roll, it is also possible to use the adjustment of the cooling roll temperature as an auxiliary (it is difficult to finely adjust the cooling roll temperature, and it is difficult to adjust the cooling roll temperature. It is difficult to finely adjust the glossiness of the synthetic resin sheet only by adjusting the above). By doing so, the glossiness of one side of the synthetic resin sheet can be adjusted more finely.
【００２０】なお、塩化ビニル樹脂シ−トの場合、冷却
ロ−ル温度が１１０℃以下では、冷却ロ−ルに作用する
圧力が過大となって、成形が困難になり、１５０℃以上
では、移送冷却部で帯状樹脂が変形し易く寸法精度が低
下するので、冷却ロ−ル温度は１１０℃〜１５０℃の範
囲内に制限することが適切である。In the case of a vinyl chloride resin sheet, if the cooling roll temperature is 110 ° C. or lower, the pressure acting on the cooling roll becomes excessive and molding becomes difficult. Since the belt-shaped resin is easily deformed in the transfer cooling section and the dimensional accuracy is lowered, it is appropriate to limit the cooling roll temperature within the range of 110 ° C to 150 ° C.
【００２１】[0021]
【作用】押出金型から樹脂を帯状に押出し、この帯状樹
脂を冷却ロ−ル群に通過させ、この通過時、帯状樹脂の
片面をエンボス冷却ロ−ルで粗面化し、更に、移送冷却
部を通過させ、次いで、引取りロ−ルで引き取ってい
き、この場合、エンボス冷却ロ−ルと隣り合わせの他の
冷却ロ−ルとの相対的位置の調整により、帯状樹脂がエ
ンボス冷却ロ−ルに接触する時間が短くされ、または、
長くされ、その結果、成形された合成樹脂シ−ト片面の
エンボスが緩く（あまく）され、またはきつくされ、そ
のエンボス面に艶が現れ、または艶が消されて、光沢度
が大または小に調節される。The resin is extruded in a strip shape from the extrusion die, and the strip resin is passed through the cooling roll group. At this time, one side of the strip resin is roughened by the emboss cooling roll, and the transfer cooling section is further provided. Through the take-up roll, and in this case, the strip-shaped resin is embossed by adjusting the relative position between the embossing cooling roll and another adjacent cooling roll. The contact time with
As a result, the embossed surface of the molded synthetic resin sheet is loosened (sucked) or tightened, and the embossed surface appears glossy or matte to increase or decrease the glossiness. Adjusted.
【００２２】例えば、塩化ビニル樹脂シ−トの場合、上
記冷却ロ−ルの相対的角度θを１８０0〜９０0の範囲で
調整することにより、光沢度（ＪＩＳ Ｋ７１０５の鏡
面光沢度）を１５〜４０％、エンボスの表面粗さで１０
μｍ〜０．１μｍの範囲内に調節できる。[0022] For example, a vinyl chloride resin sheet - for bets, the cooling Russia - by adjusting a relative angle θ range of 180 0 to 90 0 Le, glossiness (the mirror surface glossiness of JIS K7105) 15 -40%, embossed surface roughness 10
It can be adjusted within the range of μm to 0.1 μm.
【００２３】このことは、次ぎの実施例からも確認でき
る。This can also be confirmed from the following example.
【００２４】[0024]
【実施例】以下の実施例並びに比較例において、樹脂に
は軟質塩化ビニル樹脂を使用し、押出速度は４００ｍｍ
／ｍｉｎとし、金型内での樹脂温度をほぼ２００℃と
し、シ−ト厚みは３０ｍｍとした。冷却ロ−ルには、外
径５００ｍｍのものを使用し、エンボス冷却ロ−ルに
は、梨地仕上げ程度のエンボスを設けたものを使用し
た。EXAMPLES In the following examples and comparative examples, a soft vinyl chloride resin was used as the resin, and the extrusion speed was 400 mm.
/ Min, the resin temperature in the mold was approximately 200 ° C., and the sheet thickness was 30 mm. A cooling roll having an outer diameter of 500 mm was used, and an embossing cooling roll provided with embossing of a satin finish was used.
【００２５】実施例１ 冷却ロ−ル群のロ−ル温度をほぼ１２０℃とし、図２の
（イ）〜（ハ）に示すように、冷却ロ−ル３２，３３間
の相対的角度θを１８０0〜９０0の範囲内で変化させ、
成形した塩化ビニル樹脂シ−トのエンボス面の光沢度
（ＪＩＳ Ｋ７１０５の鏡面光沢度）を測定したとこ
ろ、１５％〜３３％の間であつた（θ：１８０0に対す
る光沢度が１５％、θ：１３５0に対する光沢度が１８
％、θ：９０0に対する光沢度が３３％であった）。EXAMPLE 1 The roll temperature of the cooling roll group was set to about 120 ° C., and the relative angle θ between the cooling rolls 32 and 33 was set as shown in FIGS. In the range of 180 0 to 90 0 ,
Molded vinyl chloride resin sheet - where bets embossed surface glossiness (the mirror surface glossiness of JIS K7105) were measured, Atsuta between 15% ~33% (θ: 180 gloss for 0 15%, theta : 135 0 has a gloss of 18
%, Theta: 90 gloss for 0 was 33%).
【００２６】また、これらの塩化ビニル樹脂シ−トを真
空成形（成形温度は２００℃）して、艶消しの保持程度
を調べたところ、真空成形前光沢度１５％のものが真空
成形後３２％の光沢度に、真空成形前光沢度１８％のも
のが真空成形後３５％の光沢度に、真空成形前光沢度３
３％のものが真空成形後４０％の光沢度に、それぞれ変
化したに過ぎず、真空成形にもかかわらず、低光沢度を
充分に保持できた。Further, when these vinyl chloride resin sheets were vacuum-molded (molding temperature was 200 ° C.) and the degree of matte retention was examined, it was found that those with a glossiness of 15% before vacuum molding had a gloss of 32% after vacuum molding. % Gloss, 18% before vacuum forming gloss is 35% after vacuum forming, 3% before vacuum forming
After the vacuum forming, 3% only changed to a gloss of 40%, and the low gloss could be sufficiently maintained despite the vacuum forming.
【００２７】実施例２ 実施例１に対し、冷却ロ−ル群のロ−ル温度をほぼ１５
０℃とし、これ以外は実施例１に同じとした。得られた
塩化ビニル樹脂シ−トの光沢度は、θ：１８０ 0に対す
る光沢度が５％、θ：１３５0に対する光沢度が９％、
θ：９０0に対する光沢度が２４％であった。Example 2 Compared with Example 1, the roll temperature of the cooling roll group was about 15
The temperature was 0 ° C., and the other conditions were the same as in Example 1. Got
The glossiness of vinyl chloride resin sheet is θ: 180 0Against
5% gloss, θ: 13509% glossiness against
θ: 900Was 24%.
【００２８】また、これらの実施例品についても、真空
成形後での艶消しの保持程度を調べたところ、光沢度３
５％以下に抑えることができ、良好な結果であった。 比較例 実施例１に対し、エンボス冷却ロ−ルに代え、通常通り
平滑冷却ロ−ルを使用し、冷却ロ−ルの相対的角度θ
を、通常通り１８０0とし、塩化ビニル樹脂１００重量
部に２０重量部の架橋塩化ビニル樹脂粒（艶消し剤）を
配合した樹脂組成物を使用した以外、実施例１と同様に
した。Further, regarding these examples, the degree of retention of matte after vacuum forming was examined, and the glossiness was 3
It was possible to suppress it to 5% or less, which was a good result. Comparative Example In contrast to Example 1, a smooth cooling roll was used as usual instead of the embossed cooling roll, and the relative angle θ of the cooling roll was used.
And the usual 180 0, except using the resin composition obtained by blending 20 parts by weight of cross-linked vinyl chloride resin particles (the matting agent) in 100 parts by weight of a vinyl chloride resin, and in the same manner as in Example 1.
【００２９】得られた塩化ビニル樹脂シ−トの光沢度を
測定したところ、４５％であり、真空成形後の光沢度を
測定したところ、５０％であって、相当に高く、本発明
の実施例品のように４０％以下の光沢度にするには、艶
消し剤を３０重量部以上配合する必要があった。The glossiness of the obtained vinyl chloride resin sheet was measured to be 45%, and the glossiness after vacuum forming was measured to be 50%, which is considerably high. To obtain a gloss level of 40% or less as in the case of the example product, it was necessary to blend 30 parts by weight or more of a matting agent.
【００３０】[0030]
【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、成形しようとする合成
樹脂シ−トの片面の光沢度を、冷却ロ−ル群におけるエ
ンボス冷却ロ−ルと平滑冷却ロ−ルとの相対的な位置を
変えることによりその光沢度を比較的低いレベルで変動
させおり、そのエンボス冷却ロ−ルと平滑冷却ロ−ルと
の相対的な位置を連続的に変えてシ−ト片面の光沢度を
連続的に変動させることができるから、同位置の細かい
調整により同光沢度を細かく調節できる。従って、既存
の合成樹脂シ−ト押出成形装置において、冷却ロ−ル群
の上段冷却ロ−ルをスイング式のエンボス冷却ロ−ルに
するだけで、低光沢度のもとで微妙に光沢感の異なる合
成樹脂シ−トを容易に製造できる。The extrusion molding method of the synthetic resin sheet of the present invention has the constitution as described above, and the glossiness of one side of the synthetic resin sheet to be molded is embossed in the cooling roll group. By changing the relative position of the cooling roll and the smooth cooling roll, the glossiness is changed at a relatively low level, and the relative embossing cooling roll and the smooth cooling roll are changed. Since the position can be continuously changed to continuously change the glossiness of one side of the sheet, the glossiness can be finely adjusted by finely adjusting the position. Therefore, in the existing synthetic resin sheet extrusion molding device, the upper cooling roll of the cooling roll group is simply made into a swing type embossed cooling roll, so that a delicate gloss feeling is obtained under a low gloss level. Different synthetic resin sheets can be easily manufactured.
【図１】本発明において使用する合成樹脂シ−トの製造
装置の一例を示す説明図である。FIG. 1 is an explanatory view showing an example of a synthetic resin sheet manufacturing apparatus used in the present invention.
【図２】図２の（イ）、（ロ）並びに（ハ）は、本発明
における、エンボス冷却ロ−ルと隣り合わせの他の冷却
ロ−ルとの相対的位置の異なる位置状態を示す説明図で
ある。2 (a), (b), and (c) of FIG. 2 are explanatory views showing the positional state in which the relative positions of the embossed cooling roll and another adjacent cooling roll are different in the present invention. It is a figure.
【図３】本発明における、エンボス冷却ロ−ルと隣り合
わせの他の冷却ロ−ルとの相対的位置と合成樹脂シ−ト
の光沢度の関係を示す図表である。FIG. 3 is a chart showing the relationship between the relative position of the embossed cooling roll and another adjacent cooling roll and the glossiness of the synthetic resin sheet in the present invention.
【図４】従来の合成樹脂シ−トの押出成形法において、
艶消し剤を使用する場合の冷却ロ−ル群の温度と合成樹
脂シ−トの光沢度の関係を示す図表である。FIG. 4 shows a conventional synthetic resin sheet extrusion molding method.
It is a chart showing the relationship between the temperature of the cooling roll group and the glossiness of the synthetic resin sheet when a matting agent is used.
１ 押出機 ２ 押出金型 ３ 冷却ロ−ル群 ３１ 平滑冷却ロ−ル ３２ エンボス冷却ロ−ル ３３ 平滑冷却ロ−ル 1 Extruder 2 Extrusion die 3 Cooling roll group 31 Smooth cooling roll 32 Embossing cooling roll 33 Smooth cooling roll
Claims (1)
−ルをエンボスロ−ルにした３箇一組の冷却ロ−ル群に
通過させて片面の光沢度を低くした合成樹脂シ−トを成
形する方法において、上記エンボス冷却ロ−ルと隣り合
わせの他の冷却ロ−ルとの相対的位置を調整して、上記
合成樹脂シ−ト片面の光沢度を調節することを特徴とす
る合成樹脂シ−トの押出成形方法。1. A synthetic resin in which a belt-shaped resin from an extrusion die is passed through a group of three cooling rolls in which one cooling roll is an embossing roll to reduce gloss on one side. In the method of molding a sheet, the relative position between the embossed cooling roll and another adjacent cooling roll is adjusted to adjust the glossiness of one side of the synthetic resin sheet. Extrusion molding method of synthetic resin sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29037993A JP3436957B2 (en) | 1993-11-19 | 1993-11-19 | Extrusion molding method for synthetic resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29037993A JP3436957B2 (en) | 1993-11-19 | 1993-11-19 | Extrusion molding method for synthetic resin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07137130A true JPH07137130A (en) | 1995-05-30 |
| JP3436957B2 JP3436957B2 (en) | 2003-08-18 |
Family
ID=17755258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29037993A Expired - Fee Related JP3436957B2 (en) | 1993-11-19 | 1993-11-19 | Extrusion molding method for synthetic resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3436957B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314645A (en) * | 1996-05-28 | 1997-12-09 | Sekisui Chem Co Ltd | Manufacture of plasticizer-containing thermoplastic resin sheet |
| KR101301103B1 (en) * | 2011-10-19 | 2013-08-27 | 주식회사 진우인더스 | Controllable Forming Roller Apparatus For Extruder |
-
1993
- 1993-11-19 JP JP29037993A patent/JP3436957B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314645A (en) * | 1996-05-28 | 1997-12-09 | Sekisui Chem Co Ltd | Manufacture of plasticizer-containing thermoplastic resin sheet |
| KR101301103B1 (en) * | 2011-10-19 | 2013-08-27 | 주식회사 진우인더스 | Controllable Forming Roller Apparatus For Extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3436957B2 (en) | 2003-08-18 |
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