JP3186335B2 - Continuous manufacturing method of thermoplastic mirror plate - Google Patents
Continuous manufacturing method of thermoplastic mirror plateInfo
- Publication number
- JP3186335B2 JP3186335B2 JP12922893A JP12922893A JP3186335B2 JP 3186335 B2 JP3186335 B2 JP 3186335B2 JP 12922893 A JP12922893 A JP 12922893A JP 12922893 A JP12922893 A JP 12922893A JP 3186335 B2 JP3186335 B2 JP 3186335B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- belts
- mirror
- sheet
- press
- 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.)
- Expired - Fee Related
Links
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱可塑性プラスチック
鏡面板の製造方法に関し、特に、ダブルベルト式プレス
装置を用いて残留応力の小さい熱可塑性プラスチック鏡
面板を連続的に製造する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 a method for manufacturing a thermoplastic mirror plate, and more particularly, to a method for continuously manufacturing a thermoplastic mirror plate having a small residual stress by using a double belt press. is there.
【０００２】[0002]
【従来の技術】熱可塑性のプラスチック板の製造方法と
して、代表的に大別された三方式、すなわち、多段プレ
ス方式，押出成形方式及びラミネ−ト方式は知られてい
る。多段プレス方式は、熱プレス装置を用いて所望の大
きさ及び形成のプレス板の間に熱可塑性プラスチックシ
−ト（以下、単なるプラスチックの記載は、熱可塑性樹
脂を意味する）を挾んで加熱加圧成形するバッチ方式で
あるから、プラスチック板を連続的に製造することがで
きないばかりでなく、加熱プレス成形における板全体の
温度分布及び熱履歴が不均一で、その結果、得られるプ
ラスチック板の内部応力もまた不均一となる。2. Description of the Related Art As a method for producing a thermoplastic plastic plate, there are known three generally classified methods, namely, a multi-stage pressing method, an extrusion molding method and a laminating method. In the multi-stage press method, a hot press device is used to press and mold a thermoplastic sheet (hereinafter simply referred to as a thermoplastic resin means a thermoplastic resin) between press plates of a desired size and shape. In addition to the batch method, not only can the plastic plate not be manufactured continuously, but also the temperature distribution and heat history of the entire plate in the heat press forming are not uniform, and as a result, the internal stress of the obtained plastic plate is also reduced. In addition, it becomes uneven.
【０００３】また、ダブルベルト式プレス装置を用いる
押出成形方式は、プラスチック板を連続的に製造するこ
とができるが、押出機から溶融押し出されたプラスチッ
クシ−トは、冷却ロ−ルによって連続的に徐々に冷却さ
れ板に成形される。しかし、この連続的製造において
は、加熱及び冷却の際に引張応力が発生し、内部応力の
小さな板を得ることができない。また、その鏡面化に関
しては、シ−ト成形における押圧力が小さく且つ幅方向
全体にかかる押圧力が不均一であるから、板の完全且つ
均一な鏡面化は困難であった。かかる欠点は、溶融プラ
スチックシ−ト類を積層するラミネ−ト方式による板の
製造においても同様であって、完全且つ均一なプラスチ
ック鏡面板を得ることは実施的に困難である。The extrusion molding method using a double-belt press can continuously produce a plastic plate, but the plastic sheet melt-extruded from the extruder is continuously cooled by a cooling roll. Is gradually cooled and formed into a plate. However, in this continuous production, a tensile stress is generated during heating and cooling, and a plate having a small internal stress cannot be obtained. Further, regarding the mirror finishing, since the pressing force in the sheet forming is small and the pressing force applied in the entire width direction is not uniform, it is difficult to completely and uniformly mirror-finish the plate. Such a drawback is the same in the production of a plate by a lamination method in which molten plastic sheets are laminated, and it is practically difficult to obtain a complete and uniform plastic mirror plate.
【０００４】[0004]
【発明が解決しようとする課題】本発明者は、熱可塑性
プラスチックの連続的製造法に関し、特にダブルベルト
式プレス方式に着目して、加熱冷却の熱履歴及び成形圧
力の均一なプラスチック鏡面板を連続的に製造する方法
を開発すべく検討を重ねた結果、極めて効果的製造方法
を見出した。従って、本発明の課題は、得られるプラス
チック板全体の熱履歴が実質的に均一で、且つ残留応力
の均一な熱可塑性プラスチック鏡面板とその連続的製造
方法を提供することにある。また、他の課題は、そのよ
うな均質で見栄えのよいプラスチック鏡面板を工業的に
有利に提供することにある。SUMMARY OF THE INVENTION The present inventor relates to a continuous production method of a thermoplastic plastic, and particularly, pays attention to a double belt press method, and makes a plastic mirror plate having a uniform heat history of heating and cooling and a uniform molding pressure. As a result of repeated studies to develop a continuous manufacturing method, an extremely effective manufacturing method was found. Accordingly, an object of the present invention is to provide a thermoplastic mirror surface plate having a substantially uniform thermal history of the obtained plastic plate and a uniform residual stress, and a method for continuously producing the same. It is another object of the present invention to industrially provide such a homogeneous and good-looking plastic mirror plate.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記課題を
解決する方法について、試作研究を重ねた結果、実用的
に望ましい技術を開発した。すなわち、本発明は、ダブ
ルベルト式プレス装置を用いて熱可塑性プラスチック板
を連続的に製造する方法において、前記外表面が鏡面仕
上げされた二組の対向する無端ステンレスベルトの間隙
に、熱可塑性プラスチックの溶融状シ−トを加熱ロ−ル
側から連続的に供給し、該シ−トを挾持した二枚の無端
ステンレスベルトを、前記各ハウジングに圧力媒体を供
給して両ベルトを相互に近付けるように押圧し、その押
圧成形されたシ−トを冷却ロ−ル側から連続的に引取る
ことを特徴とするダブルベルト式熱可塑性プラスチック
鏡面板の連続的製造方法を提案するものである。Means for Solving the Problems The inventor of the present invention has developed a practically desirable technique as a result of repeated trial manufacture and research on a method for solving the above-mentioned problems. That is, the present invention relates to a method for continuously producing a thermoplastic plastic plate using a double-belt press apparatus, wherein the outer surface is mirror-finished and a gap between two sets of opposed endless stainless steel belts is provided. The molten sheet is continuously supplied from the heating roll side, and two endless stainless steel belts sandwiching the sheet are supplied with a pressure medium to each of the housings to bring the two belts closer to each other. And a method for continuously manufacturing a double-belt-type thermoplastic mirror-faced plate, wherein the pressed sheet is continuously taken from the cooling roll side.
【０００６】本発明の方法は、ダブルベルトプレス方式
によるプラスチック鏡面板の連続的製造法であって、特
に加熱ロ−ルで加熱されたベルトにより挾持された溶融
樹脂シ−トは、全面的に均一に加熱されると共にシ−ル
部と加圧機構を備えたハウジングによって適切な押圧成
形を行わせる点に技術的特徴があり、本発明は、かかる
ハウジングを用いて挾持樹脂シ−トの加熱を均一にする
と共に、流体圧力媒体をハウジング内に供給してシ−ト
を適切な押圧成形をすることができる。本発明は、この
ようなハウジングを利用してステンレスベルトの外側鏡
面と同様な鏡面を有する均質な樹脂板を効率良く且つ連
続的に供給し得ることの発見に基づくものである。The method of the present invention is a method for continuously producing a plastic mirror plate by a double belt press method. In particular, a molten resin sheet held by a belt heated by a heating roll is entirely covered. There is a technical feature in that a suitable press molding is performed by a housing provided with a seal portion and a pressurizing mechanism while being uniformly heated, and the present invention uses such a housing to heat a holding resin sheet. And the fluid pressure medium is supplied into the housing so that the sheet can be pressed properly. The present invention is based on the discovery that a homogeneous resin plate having a mirror surface similar to the outer mirror surface of a stainless steel belt can be efficiently and continuously supplied using such a housing.
【０００７】本発明を添付図面により、更に詳細に説明
する。図１は、本発明の方法を実施するダブルベルト式
プレス装置の一例の説明用模式的側面図である。図にお
いて、所定の間隙を置いて対向配置された一対の加熱ロ
−ル２，２’と一対の冷却ロ−ル３，３’が一定の間隔
を置いて並行に配置され、同一側の加熱ロ−ル２と冷却
ロ−ル３及び加熱ロ−ル２’と冷却ロ−ル３’に、それ
ぞれ外面が鏡面仕上げされた無端ステンレスベルト４，
４’が掛回される。その二組の各ベルトは、対向する外
面が所望間隙となるように設置され、例えば、カレンダ
−ロ−ルから部出しされた二枚のシ−トを積層状に合わ
せた溶融状のプラスチックシ−ト１が、加熱ロ−ル側の
ベルト間隙に供給される。シ−ト１を挾持する無端ステ
ンレスベルト４，４’の間隙保持部には、各ベルトの内
側に一対のハウジング５がそれぞれ対向状に取付けら
れ、そのハウジングは、内側に加圧室６が形成され、そ
の開口周縁部にはベルトの内面と気密に接合されるシ−
ル部７が設けられて、圧力媒体により両ベルトを近付け
るように押圧することができるように構成される。The present invention will be described in further detail with reference to the accompanying drawings. FIG. 1 is a schematic side view for explaining an example of a double-belt press device for carrying out the method of the present invention. In the figure, a pair of heating rolls 2, 2 'and a pair of cooling rolls 3, 3' which are opposed to each other with a predetermined gap are arranged in parallel at a predetermined interval, and the same side is heated. An endless stainless belt 4, whose outer surface is mirror-finished, is provided on the roll 2 and the cooling roll 3 and the heating roll 2 'and the cooling roll 3'.
4 'is looped. Each of the two sets of belts is installed such that the opposing outer surfaces have a desired gap. For example, a molten plastic sheet obtained by combining two sheets protruded from a calendar roll in a laminated manner. Is supplied to the belt gap on the heating roll side. A pair of housings 5 are attached to the gap holding portions of the endless stainless steel belts 4 and 4 'for holding the sheet 1 inside each belt so as to face each other. The periphery of the opening is sealed to the inner surface of the belt in an airtight manner.
The belt unit 7 is provided so that both belts can be pressed by a pressure medium so as to approach each other.
【０００８】熱媒オイルが循環する一定の加熱温度に保
持された加熱ロ−ル２，２’側のベルト間隙に供給され
た熱可塑性プラスチックシ−ト１は、一定のスピ−ドで
加熱ロ−ル側から冷却ロ−ル側に移送される。その挾持
状態の該プラスチックシ−トは、まず加熱ロ−ルで一定
温度に加熱されたベルトと接触して均一温度に加熱さ
れ、次にハウジング５，５’において、その加圧室に所
定の温度に制御された流体圧力媒体を圧入させて押圧成
形されると同時にプラスチックの熱変形温度以下に冷却
され、続いて、例えば、50℃のような適度の温度にコン
トロ−ルされた冷却ロ−ルでベルトから剥離して送り出
される。一対のハウジング５，５’は、シ−ト挾持状の
ベルト４，４’のそれぞれの内側面に対向状に取付けら
れ、各ハウジングのベルト内面に接する部分にはシ−ル
部５が取付けられ、また中央部には圧力媒体が循環する
加圧室６が設けられている。The thermoplastic sheet 1 supplied to the belt gap on the side of the heating rolls 2 and 2 'maintained at a constant heating temperature at which the heating medium oil circulates is heated at a constant speed. From the roll side to the cooling roll side. The plastic sheet in the clamped state is heated to a uniform temperature by first contacting the belt heated to a constant temperature by a heating roll. A cooling roll controlled to a temperature equal to or lower than the heat deformation temperature of the plastic at the same time as being pressed and molded by press-fitting a fluid pressure medium controlled at a temperature, and then controlled to an appropriate temperature such as 50 ° C. Peeled off from the belt with a screw. A pair of housings 5, 5 'are attached to the inner surfaces of the sheet-clamping belts 4, 4' so as to face each other, and a seal portion 5 is attached to a portion of each housing in contact with the inner surface of the belt. A pressurizing chamber 6 in which a pressure medium circulates is provided at the center.
【０００９】その加圧室に、例えば炭化水素合成油のよ
うな圧力媒体を圧入すると、その加圧によってベルトは
それぞれ対向側に押圧され、均一加熱された溶融プラス
チックシ−トは所定の厚さに押圧成形される。その際の
押圧力は、圧力媒体の供給量をコントロ−ルすることに
よって行われ、通常、その大きさは経験的に選択されさ
れる。圧力媒体を圧入し加圧室６，６’の押圧力によっ
て両側から押圧され、冷却されたシ−トは、冷却ロ−ル
３，３’のところでベルトから剥離し、カット装置に引
き取られて所定の形状に打ち抜かれる。本発明の方法
は、上記のようなダブルベルト式プレス装置によって効
率良く連続的に形成され、見栄えの良い熱可塑性プラス
チック鏡面板が連続的に製造される。When a pressure medium such as, for example, a hydrocarbon synthetic oil is pressed into the pressurizing chamber, the belts are pressed to the opposite sides by the pressurization, and the uniformly heated molten plastic sheet has a predetermined thickness. Is pressed. The pressing force at that time is performed by controlling the supply amount of the pressure medium, and the magnitude is usually selected empirically. The pressurized medium is press-fitted and pressed from both sides by the pressing force of the pressurizing chambers 6 and 6 ', and the cooled sheet is separated from the belt at the cooling rolls 3 and 3' and taken up by the cutting device. It is punched into a predetermined shape. The method of the present invention is efficiently and continuously formed by the double-belt-type press apparatus as described above, and an excellent-looking thermoplastic plastic mirror plate is continuously manufactured.
【００１０】本発明方法に用いられる熱可塑性プラスチ
ックとしては、例えば、ポリ塩かビニル系樹脂，ポリエ
チレン樹脂，ポリプロピレン樹脂，ポリアミド樹脂，弗
素樹脂，アクリル樹脂，ポリカ−ボネ−ト樹脂，ポリエ
ステル樹脂及びポリスチレン樹脂などが挙げられる。そ
れらは単独種で用いてもよいし、また二種以上を混合使
用することもできる。更に、本発明の方法においては、
二枚以上の樹脂シ−トを積層状に一体化した鏡面板を製
造することもできる。そのような積層状の鏡面板は、同
一の樹脂類同士を組合せてもよく、異なる樹脂類のシ−
トを組合せてもよい。The thermoplastic used in the method of the present invention includes, for example, polysalt or vinyl resin, polyethylene resin, polypropylene resin, polyamide resin, fluorine resin, acrylic resin, polycarbonate resin, polyester resin and polystyrene. Resins. They may be used alone or as a mixture of two or more. Further, in the method of the present invention,
A mirror plate in which two or more resin sheets are integrated in a laminated state can also be manufactured. In such a laminated mirror plate, the same resins may be combined with each other, or the seals of different resins may be used.
May be combined.
【００１１】[0011]
【作用】本発明は、ダブルベルト式プレス装置を利用し
て高品質の熱可塑性プラスチック鏡面板を高い生産スピ
−ドで効率良く、連続的且つ安定に提供することができ
る。According to the present invention, it is possible to efficiently, continuously and stably provide a high quality thermoplastic plastic mirror plate at a high production speed by using a double belt type press apparatus.
【００１２】[0012]
【実施例】次に、具体例により、本発明を更に詳細に説
明する。 実施例 １ 図１に示すような本発明の装置を用い、２つのカレンダ
−ロ−ルからそれぞれ部出しされた厚さ 0.5mmの硬質塩
化ビニル基材シ−ト２枚を積層状に貼合わせて約 175℃
に加熱された加熱ロ−ル間に連続的に送り込んだ。エン
ドレスベルト間に挾持され加熱され軟化状貼合せシ−ト
は、両側のハウジングの加圧室によりプレスと冷却が行
われ、冷却ロ−ル側から引き取られた。対向するベルト
のそれぞれに適用されたハウジングの圧力室には、30℃
の温度にコントロ−ルされた炭化水素系合成油圧力媒体
を30kg/cm2の圧力で循環させた。このダブルベルト式プ
レス装置によって表面が鏡面光沢を有する厚さ 1.0mmの
硬質塩化ビニル板が連続的に得られた。得られた板につ
いて次の各物性等を調べ、結果を表１に示した。Now, the present invention will be described in further detail with reference to specific examples. Example 1 Using a device of the present invention as shown in FIG. 1, two hard vinyl chloride base sheets each having a thickness of 0.5 mm protruded from two calendar rolls are laminated in a laminated manner. About 175 ℃
And continuously fed between heated rolls. The heated and softened laminating sheet sandwiched between the endless belts was pressed and cooled by the pressurizing chambers of the housings on both sides, and was taken from the cooling roll side. 30 ° C in the pressure chamber of the housing applied to each of the opposing belts
A hydrocarbon-based synthetic oil pressure medium controlled at a temperature of 30 ° C. was circulated at a pressure of 30 kg / cm 2 . With this double-belt press, a 1.0 mm thick hard vinyl chloride plate having a specular gloss surface was continuously obtained. The obtained plate was examined for the following properties and the results are shown in Table 1.
【００１３】加熱伸縮率（％）：（ＪＩＳ Ｋ 6745）加熱伸縮率の場所によるアバレ ：幅方向に７点、更にこ
れらを長さ方向に10mm毎に10回測定し、その平均加熱伸
縮率を求め、平均加熱伸縮率が±３％未満の場合を“な
し”、±３％以上の場合を“あり”とする。熱による黄変のアバレ ：ＪＩＳ Ｚ 8730 準じて色差
△Ｅが、0.5未満の場合を“なし”、0.5％以上の場合を
“あり”とする。 Heat expansion / contraction rate (%): (JIS K 6745) Ablation depending on the location of the heat expansion / contraction rate : 7 points in the width direction, and these were measured 10 times every 10 mm in the length direction. The average heat expansion / contraction rate is less than ± 3%, “none”, and the case of ± 3% or more is “yes”. Ablation of yellowing due to heat : According to JIS Z 8730, when the color difference ΔE is less than 0.5, it is “none”, and when it is 0.5% or more, it is “present”.
【００１４】鏡面性：ＪＩＳ Ｂ 0601 により中心線
平均粗さ（Ｒａ）を測定し、Ｒａが0.04μｍ以下の場合
を“○”、0.04〜0.1μｍの場合を“△”とし、0.1μｍ
以上の場合を“×”とする。連続生産の可否 ：製品の長さが10ｍ以上が“可”で、10
ｍ以下が“不可”である。 Specularity : The center line average roughness (Ra) is measured according to JIS B 0601. When the Ra is 0.04 μm or less, ““ ”; when it is 0.04 to 0.1 μm,“ △ ”;
The above case is defined as “×”. Whether serial production is possible : If the product length is 10 m or more,
m or less is “impossible”.
【００１５】比較例１及び２ 実施例１と同様に２つのカレンダ−ロ−ルからそれぞれ
部出しされた厚さ 0.5mmの硬質塩化ビニル基材シ−ト２
枚を積層状に合わせ、これを 1.0mmの間隙の鏡面カレン
ダ−ロ−ルに通してラミネ−トして 1.0mmの板厚の硬質
塩化ビニル板を成形した（比較例１）。また、カレンダ
−ロ−ルで成形した厚さ 0.5mmのシ−トを２枚重ね、多
段プレス方式で 1.0mmの板厚の硬質塩化ビニル板を成形
した（比較例２）。これらについても同様に側物性等を
測定し、それらの結果を表１にまとめて示した。Comparative Examples 1 and 2 A 0.5 mm thick rigid vinyl chloride base sheet 2 protruded from two calendar rolls in the same manner as in Example 1.
The sheets were laminated and passed through a mirror calender roll having a gap of 1.0 mm to be laminated to form a rigid vinyl chloride sheet having a thickness of 1.0 mm (Comparative Example 1). Further, two sheets of 0.5 mm thick formed by a calender roll were stacked, and a 1.0 mm thick rigid vinyl chloride plate was formed by a multi-stage press method (Comparative Example 2). The physical properties and the like of these were measured in the same manner, and the results are summarized in Table 1.
【００１６】[0016]
【表 １】 加 熱 伸 縮 率（％） 場所によ 熱による黄 鏡面 連続生 75℃ 80℃ 85℃ 100℃ るアバレ 変アバレ 性 産可否 実施例１ -0.2 -0.5 -0.9 -1.2 なし なし ○ 可 比較例１ -0.4 -1.3 -2.2 -3.3 あり なし × 可 同 ２ -0.2 -0.5 -0.9 -1.2 あり あり ○ 不可[Table 1] pressurized heat Shin shrinkage rate (%) location Ru yellow mirror-continuous production 75 ℃ 80 ℃ 85 ℃ 100 ℃ by by heat in Abare strange Abare of production propriety Example 1 -0.2 -0.5 -0.9 -1.2 None None ○ Yes Comparative Example 1 -0.4 -1.3 -2.2 -3.3 Yes No × Yes Same 2 -0.2 -0.5 -0.9 -1.2 Yes Yes Yes No
【００１７】実施例 ２ ２つのカレンダ−ロ−ルからそれぞれ部出しされた厚さ
0.5mmのメチルメタクリレ−ト樹脂シ−トを、実施例１
と同様に、図１に示す製造装置を用い、本発明のダブル
ベルト式プレス成形により 1.0mmの厚さの樹脂板を製造
した。実施例１と同様に、各物性等を測定した。結果を
表２に示した。Example 2 Thickness of each part from two calendar rolls
Example 1 A 0.5 mm methyl methacrylate resin sheet was used in Example 1.
Similarly to the above, a resin plate having a thickness of 1.0 mm was produced by the double belt press molding of the present invention using the production apparatus shown in FIG. In the same manner as in Example 1, each physical property and the like were measured. The results are shown in Table 2.
【００１８】比較例３及び４ 熱可塑性プラスチックとしてメチルメタクリレ−ト（Ｍ
ＭＡ）樹脂を用い、Ｔダイ押出機からシ−トを押出し、
厚さ0.75mmのＭＭＡ板を得た（比較例３）。また、この
シ−トを鏡面板に挾んで多段プレス方式でＭＭＡ板を製
造した（比較例３）。これらの板についても同様に物性
等を測定し、表２に併記した。Comparative Examples 3 and 4 Methyl methacrylate (M
MA) Using a resin, extruding a sheet from a T-die extruder,
An MMA plate having a thickness of 0.75 mm was obtained (Comparative Example 3). Further, an MMA plate was manufactured by a multi-stage pressing method by sandwiching the sheet between mirror plates (Comparative Example 3). Physical properties and the like of these plates were measured in the same manner, and the results are shown in Table 2.
【００１９】[0019]
【表 ２】 加 熱 伸 縮 率（％） 場所によ 熱による黄 鏡面 連続生 80℃ 100℃ 120℃ 140℃ るアバレ 変アバレ 性 産可否 実施例２ -0.1 -0.4 -0.9 -3.0 なし なし ○ 可 比較例３ -0.3 -1.6 -2.9 -4.6 あり なし △ 可 同 ４ -0.1 -0.4 -1.0 -2.8 あり なし ○ 不可TABLE 2 pressurized heat Shin reduction ratio (%) Heat Ru Yellow mirror continuously producing 80 ℃ 100 ℃ 120 ℃ 140 ℃ due by the location Abare varying Abare of production possibility Example 2 -0.1 -0.4 -0.9 -3.0 No No ○ Yes Comparative Example 3 -0.3 -1.6 -2.9 -4.6 Yes No Yes Yes Same 4 -0.1 -0.4 -1.0 -2.8 Yes No Yes No
【００２０】[0020]
【発明の効果】上表から明らかなように、本発明の方法
は、均質で残留応力が小さく、且つ鏡面光沢の優れた熱
可塑性プラスチック鏡面板を連続的に製造することがで
きるので、産業上の利用性は極めて高い。As is clear from the above table, the method of the present invention can continuously produce a thermoplastic mirror plate having a uniform, low residual stress and excellent mirror gloss. The availability of is extremely high.
【図１】本発明の方法を実施する装置の一例の説明用模
式的側面図である。FIG. 1 is a schematic side view for explaining an example of an apparatus for performing a method of the present invention.
１ 熱可塑性樹脂シ−ト ２，２’ 加熱ロ
−ル ３，３’ 冷却ロ−ル ４，４’ 無端ス
テンレスベルト ５，５’ ハウジング ６，６’ 加圧室 ７，７’ シ−ル部DESCRIPTION OF SYMBOLS 1 Thermoplastic resin sheet 2, 2 'Heating roll 3, 3' Cooling roll 4, 4 'Endless stainless steel belt 5, 5' Housing 6, 6 'Pressurizing chamber 7, 7' Seal part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 71/00 - 71/04 B29C 43/00 - 43/58 B29C 59/00 - 59/18 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) B29C 71/00-71/04 B29C 43/00-43/58 B29C 59/00-59/18
Claims (1)
加熱ロ−ルと一対の冷却ロ−ルが一定の間隔を置いて並
行に配置され、それぞれ同一側の加熱ロ−ルと冷却ロ−
ルとに外面が鏡面仕上げされた無端ステンレスベルトが
掛回されると共に、その二組のベルトの対向する外面が
所望間隙を保持するように配置され、その間隙保持部
に、シ−ル部と加圧室をもち圧力媒体により対向する両
ベルトを近付けるように押圧することができる一対のハ
ウジングが各ベルトの内側に対向状に取付けられたダブ
ルベルト式プレス装置を用いて熱可塑性プラスチック板
を連続的に製造する方法において、前記外表面が鏡面仕
上げされた二組の対向する無端ステンレスベルトの間隙
に、熱可塑性プラスチックの溶融状シ−トを加熱ロ−ル
側から連続的に供給し、該シ−トを挾持した二枚の無端
ステンレスベルトを、前記各ハウジングに圧力媒体を供
給して両ベルトを相互に近付けるように押圧し、その押
圧成形されたシ−トを冷却ロ−ル側から連続的に引取る
ことを特徴とするダブルベルト式熱可塑性プラスチック
鏡面板の連続的製造方法。1. A pair of heating rolls and a pair of cooling rolls arranged opposite each other with a predetermined gap are arranged in parallel at a predetermined interval, and each of them is provided with a heating roll and a cooling roll on the same side. B
An endless stainless steel belt whose outer surface is mirror-finished is wrapped around the belt and the opposite outer surfaces of the two sets of belts are arranged so as to maintain a desired gap. A pair of housings that have a pressure chamber and can press the opposite belts close to each other with a pressure medium are connected to the inside of each belt. In a method for producing the same, a molten sheet of a thermoplastic plastic is continuously supplied from a heating roll side to a gap between two sets of opposed endless stainless steel belts whose outer surfaces are mirror-finished. A pressure medium is supplied to each of the housings to press the two endless stainless steel belts sandwiching the sheet so as to bring the two belts closer to each other. Cooling B - double belt type heat process for continuous production of thermoplastic plastic specular plate, wherein continuously be 引取Ru Le side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922893A JP3186335B2 (en) | 1993-05-31 | 1993-05-31 | Continuous manufacturing method of thermoplastic mirror plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922893A JP3186335B2 (en) | 1993-05-31 | 1993-05-31 | Continuous manufacturing method of thermoplastic mirror plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06339987A JPH06339987A (en) | 1994-12-13 |
| JP3186335B2 true JP3186335B2 (en) | 2001-07-11 |
Family
ID=15004333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12922893A Expired - Fee Related JP3186335B2 (en) | 1993-05-31 | 1993-05-31 | Continuous manufacturing method of thermoplastic mirror plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3186335B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021345A (en) * | 2004-07-06 | 2006-01-26 | Shin Etsu Polymer Co Ltd | Decorative sheet manufacturing method |
| JP2008301179A (en) * | 2007-05-31 | 2008-12-11 | Shin Etsu Polymer Co Ltd | Sheet for punching and method for manufacturing sheet for punching |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2181325C2 (en) * | 1995-12-15 | 2002-04-20 | Дайкин Индастриз, Лтд. | Method and apparatus for making polytetrafluoroethylene sheet and device for pelletizing-mixing |
| JP2005178276A (en) | 2003-12-22 | 2005-07-07 | Shin Etsu Polymer Co Ltd | Decorative film and its manufacturing method |
| JP2007160648A (en) * | 2005-12-13 | 2007-06-28 | Shin Etsu Polymer Co Ltd | Metallic decorative sheet and manufacturing method thereof |
| KR101986747B1 (en) * | 2017-07-03 | 2019-09-30 | 주식회사 폼웍스 | Compression Device for Elastic Foam Materials |
| CN116394553B (en) * | 2023-02-13 | 2024-01-30 | 湖州森诺氟材料科技有限公司 | Equipment and method for enhancing interlayer binding force of polytetrafluoroethylene microporous membrane |
-
1993
- 1993-05-31 JP JP12922893A patent/JP3186335B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021345A (en) * | 2004-07-06 | 2006-01-26 | Shin Etsu Polymer Co Ltd | Decorative sheet manufacturing method |
| JP2008301179A (en) * | 2007-05-31 | 2008-12-11 | Shin Etsu Polymer Co Ltd | Sheet for punching and method for manufacturing sheet for punching |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06339987A (en) | 1994-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4844766A (en) | Process for continuous production of termoplastic webs | |
| JPH04232019A (en) | Manufacture of smooth extruded plain sheet or film and its device, manufacture of extruded product and optical recording medium | |
| JP3186335B2 (en) | Continuous manufacturing method of thermoplastic mirror plate | |
| KR0127889B1 (en) | Production of thermoplastic resin sheet or film | |
| US20060244174A1 (en) | Advanced method and apparatus for cost-effectively and continuously producing expanded thermoformable honeycomb materials | |
| US20110189437A1 (en) | Method of making a thermoplastic film with a three-dimensionally structured surface | |
| US20080001316A1 (en) | Apparatus and Method for Producing Embossed Film | |
| KR970033740A (en) | Manufacturing method of laminated thermoplastic resin film, laminated thermoplastic resin film and thermoformed products thereof | |
| JPH06300916A (en) | Production of phase difference film | |
| CA2346444C (en) | Non-glossing thermoformed film | |
| US6520235B1 (en) | Calendering of polymeric vinyl films exhibiting high gloss and structural stability | |
| JP2003251681A (en) | Method and apparatus for manufacturing synthetic resin sheet, and synthetic resin sheet | |
| JPH11320656A (en) | Thermoplastic resin sheet having small optical strain and excellent surface smoothness, and manufacture thereof | |
| US20220016866A1 (en) | Micro Embossing | |
| CA1159211A (en) | Rotary forming of articles - b | |
| EP0112059B1 (en) | A method of forming a shaped acrylonitrile polymer article | |
| JPH0222031A (en) | Vacuum molding of both sides of laminated sheet | |
| JPH09248855A (en) | Production of thermoplastic mirror surface sheet | |
| JPS62184834A (en) | Manufacture of thermoplastic resin sheet | |
| JPS6324806B2 (en) | ||
| JPH10235734A (en) | Method of manufacturing embossed sheet | |
| JP3339699B2 (en) | Method for producing thermoplastic resin sheet or film | |
| JPH0880532A (en) | Forming mold and manufacture of multilayer molding using the mold | |
| JPH04173126A (en) | Laminating method of polymer sheet | |
| JPH08156073A (en) | Production equipment of thermoplastic resin sheet or film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130511 Year of fee payment: 12 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130511 Year of fee payment: 12 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |