WO2019117300A1 - Casting drum device and method for manufacturing synthetic resin film/sheet using said casting drum device - Google Patents

Casting drum device and method for manufacturing synthetic resin film/sheet using said casting drum device Download PDF

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Publication number
WO2019117300A1
WO2019117300A1 PCT/JP2018/046160 JP2018046160W WO2019117300A1 WO 2019117300 A1 WO2019117300 A1 WO 2019117300A1 JP 2018046160 W JP2018046160 W JP 2018046160W WO 2019117300 A1 WO2019117300 A1 WO 2019117300A1
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WO
WIPO (PCT)
Prior art keywords
casting drum
synthetic resin
sheet
resin film
drum device
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PCT/JP2018/046160
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French (fr)
Japanese (ja)
Inventor
小川　剛
務 平地
定昭 阿久津
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三菱ケミカルエンジニアリング株式会社
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Publication of WO2019117300A1 publication Critical patent/WO2019117300A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/89—Internal treatment, e.g. by applying an internal cooling fluid stream

Definitions

  • the present invention relates to a casting drum apparatus used in forming a synthetic resin film / sheet and a method of producing a synthetic resin film / sheet using the casting drum apparatus.
  • the synthetic resin film / sheet is produced by a melt extrusion molding method, a solution casting method or the like.
  • Melt extrusion molding is the most common method for producing synthetic resin films and sheets, and it is made by extruding a thermoplastic resin heated and melted in an extruder from a discharge port of an extrusion mold and cooling it on a drum. , Synthetic resin film sheets are manufactured.
  • the solution casting method is a production method often used when producing a synthetic resin film or sheet using a resin which is easily decomposed when melted or a resin having a high melting point, and a solution obtained by dissolving a synthetic resin in a solvent is
  • the synthetic resin film / sheet is produced by heating and drying the solution after being supplied onto a drum or a smooth belt having a smooth surface.
  • Synthetic resin films and sheets produced by solution casting do not have polymer orientation, so there is no directionality in strength or optical properties, high thickness accuracy, and excellent smoothness, transparency and gloss etc. It is often used in optical applications because it has excellent physical properties and characteristics.
  • Patent Document 1 As shown in FIG. 4, an outer cylinder 21, an inner cylinder 22, a spiral groove partition 24 that divides a gap 23 between the outer cylinder 21 and the inner cylinder 22, one shaft 25, the other shaft 26, and A casting drum 20 is disclosed in which a liquid heat medium branch pipe 27 is integrally formed.
  • the casting drum 20 is supported and rotated by one shaft 25 and the other shaft 26, and the cooling water flows from the inside of one shaft 25 ⁇ the liquid heat medium branch pipe 27 ⁇ the gap between the outer cylinder 21 and the inner cylinder 22.
  • the surface of the casting drum 20 is cooled by being supplied through a route of 23 ⁇ liquid heat medium branch pipe 27 ⁇ the inside of the other shaft 26.
  • Patent Document 2 discloses that any heating method such as infrared heating, contact with heated gas, electromagnetic induction heating, gas heater heating, etc. is used as a heating method when solidifying a polycarbonate resin solution on a metal belt. .
  • the surface temperature of the drum-type roll is 3 ° C./hr or less in forming a film by casting a stock solution containing a polyvinyl alcohol-based resin on a drum-type roll heated by passing through a die. It is disclosed to start casting after raising the temperature to the range of 70 to 100.degree.
  • a heating means of this drum type roll steam, a heating medium, warm water, an electric heater, etc. are mentioned, Moreover, when using a heater, an induction heating coil, etc. as a heat source, in order to control temperature nonuniformity. It is mentioned to narrow the interval of
  • a shaft, a spoke, a trunk What integrally formed component members, such as a part, is used.
  • the casting drum is supported and rotated by the shaft, and a heating medium / cooling medium is supplied to heat and cool the surface of the body.
  • the casting drum has been increased in size (for example, 4 m in diameter and 6 m in width) to meet the demand and demand for mass production, widening, and thinning of synthetic resin films and sheets (for example, large size) It takes a lot of energy to rotationally drive the casting drum with increased weight and weight, and furthermore, since the casting drum with large and increased weight is supported and rotated by the shaft, deflection by the weight of the casting drum is large Therefore, it is difficult to keep the film thickness of the synthetic resin film / sheet uniform. Further, although it is possible to adopt a metal belt as disclosed in Patent Document 2 in place of the casting drum, the use of a metal belt causes problems such as high equipment cost.
  • the surface temperature of the entire circumference of the casting drum can be uniformly heated as disclosed in Patent Document 3 Depending on the position where the casting drum surface is in contact with a solution in which a synthetic resin is dissolved in a solvent or a molten synthetic resin (hereinafter also referred to as "liquid synthetic resin"), cooling is not performed. The need arises to set and control the heating temperature.
  • the inventors of the present invention have made earnest studies to solve the above problems and have made the present invention. That is, even when the casting drum is enlarged, the object of the present invention can be rotationally driven economically and efficiently, and the film thickness of the synthetic resin film / sheet can be kept uniform, and the synthetic resin film ⁇ Material of sheet, resin for casting, synthetic resin film, casting drum apparatus according to the physical properties and characteristics required for the sheet, and the like, and a casting drum apparatus capable of freely setting and controlling the surface temperature of the casting drum, and synthesis using this casting drum apparatus It is providing a manufacturing method of a resin film sheet.
  • the casting drum device of the present invention is rotatable relative to the fixed shaft so as to cover the fixed shaft, the heating means and / or the cooling means disposed on the surface of the fixed shaft, and the heating means and / or the cooling means.
  • the method for producing a synthetic resin film / sheet using the casting drum device according to the present invention solves the above-mentioned problems by producing a synthetic resin film / sheet using the casting drum device as described above. It is.
  • a casting drum device used when molding a synthetic resin film or sheet With a fixed axis, Heating means and / or cooling means disposed on the surface of the fixed shaft; A hollow cylindrical rotary ring rotatably provided relative to the fixed shaft so as to cover the heating means and / or the cooling means; A casting drum apparatus characterized in that the rotating ring is heated and / or cooled by the heating means and / or the cooling means.
  • the heating means and / or the cooling means are disposed on the surface of the fixed shaft according to the material resin of the synthetic resin film / sheet, the physical properties / characteristics required for the synthetic resin film / sheet, etc.
  • the casting drum apparatus characterized in that (3) In a cross section where the heating means and / or the cooling means are orthogonal to the central axis of the rotary ring, the surface on the rotary ring side of the heating means and / or the cooling means is substantially parallel to the inner surface of the rotary ring.
  • the heating means and / or the cooling means are disposed on the surface of the fixed shaft so as to be substantially parallel to the central axis of the rotary ring, in (1) to (3)
  • the casting drum apparatus in any one.
  • the casting drum device according to any one of (1) to (4), wherein the heating means and / or the cooling means are a plurality of strip-like heating means and / or cooling means.
  • the heating means is an induction coil, and an alternating current is caused to flow through the induction coil to generate magnetic flux lines of varying strength, thereby heating the rotary ring.
  • the casting drum apparatus according to any one of the above.
  • the heating means is an infrared heater, and current is supplied to the infrared heater to generate infrared rays, thereby heating the rotating ring, according to any one of (1) to (5). Casting drum apparatus as described.
  • the cooling means is a cooling means for supplying a cooling medium to a passage and / or a cooling means for spraying a cooling medium on the inner surface of the rotary ring, any of (1) to (7) Casting drum device described in.
  • the rotary ring is a laminated hollow cylinder formed of an inner layer of carbon fiber reinforced plastic (CFRP), an outer layer of stainless steel, or a hollow cylinder of carbon fiber reinforced plastic (CFRP), The casting drum device according to any one of (1) to (8).
  • the casting drum device according to any one of (1) to (10), further comprising: a cooling device for blowing a cooling medium toward the surface of the rotary ring around the rotary ring.
  • a synthetic resin film / sheet is formed from a solution in which a synthetic resin is dissolved in a solvent or a molten synthetic resin.
  • the casting drum device is configured to include a fixed shaft having heating means and / or cooling means disposed on the surface, and a hollow cylindrical rotary ring rotatably provided about the fixed shaft.
  • a fixed shaft having heating means and / or cooling means disposed on the surface
  • a hollow cylindrical rotary ring rotatably provided about the fixed shaft.
  • the direction of rotation of the rotating ring by adjusting the arrangement of the heating and / or cooling means on the surface of the fixed shaft and / or the shape of the fixed shaft on which a) the heating and / or cooling means are arranged It becomes possible to freely set and control the surface temperature of the rotary ring in the direction parallel to the longitudinal direction of the synthetic resin film / sheet and the central axis of the rotary ring (the width direction of the synthetic resin film / sheet).
  • the surface temperature of the rotary ring can be freely set and controlled in accordance with the physical properties and characteristics required for the material resin of the film and sheet, and the synthetic resin film and sheet.
  • the casting drum is enlarged by producing a synthetic resin film or sheet using the casting drum device as described above.
  • synthetic resin films and sheets can be produced economically and efficiently.
  • a synthetic resin film / sheet having a uniform film thickness can be easily produced, and a synthetic resin film / sheet having the required physical properties and characteristics can be easily produced.
  • FIG. 10 It is a schematic diagram of the cross section containing the central axis of a rotating ring which shows embodiment of the casting drum apparatus of this invention. It is a schematic diagram which shows the AA cross section of FIG. It is the elements on larger scale of FIG. A conventional example shown in FIG. 10
  • the synthetic resin film / sheet is produced by a melt extrusion molding method, a solution casting method or the like.
  • Melt extrusion molding is the most common method for producing synthetic resin films and sheets, and it is made by extruding a thermoplastic resin heated and melted in an extruder from a discharge port of an extrusion mold and cooling it on a drum. A synthetic resin film sheet is produced.
  • the solution casting method is a production method often used when producing a synthetic resin film or sheet using a resin which is easily decomposed when melted or a resin having a high melting point, and a solution obtained by dissolving a synthetic resin in a solvent is After being supplied onto a drum or a smooth belt having a smooth surface, a synthetic resin film / sheet is produced by heating and drying. Synthetic resin films and sheets produced by solution casting do not have polymer orientation, so there is no directionality in strength or optical properties, high thickness accuracy, and excellent smoothness, transparency and gloss etc. It is often used in optical applications because it has excellent physical properties and characteristics.
  • a casting drum 20 in which a heat medium branch pipe 27 is integrally formed is used, and the casting drum 20 is supported and rotated by one shaft 25 and the other shaft 26, and the cooling water is provided inside the one shaft 25.
  • the liquid heat medium branch pipe 27 ⁇ the gap 23 between the outer cylinder 21 and the inner cylinder 22 ⁇ the liquid heat medium branch pipe 27 ⁇ the inside of the other shaft 26 is supplied, and the surface of the casting drum 20 is cooled.
  • a cooling medium such as water is supplied into the casting drum in order to cool the liquid synthetic resin (Patent Document 1).
  • a heating medium such as steam or warm water is supplied into the casting drum, or a heat source such as an electric heater or an induction heating coil is used to remove the solvent from the liquid synthetic resin. And 3).
  • FIG. 1 is a schematic view of a cross section including the central axis 9 of the rotary ring 4
  • FIG. 2 is a schematic view showing an AA cross section of FIG. 1
  • FIG. 3 is a partially enlarged view of FIG.
  • the main features of the casting drum device of the present invention are: 1) A fixed shaft 2 on the surface of which heating means and / or cooling means 3 are arranged, and a hollow cylindrical rotary ring 4 rotatably attached to the fixed shaft 2 And 2) heating and / or cooling means 3 arranged on the surface of the fixed shaft 2 is configured to heat and / or cool the rotary ring 4.
  • the casting drum device 1 of the present invention can be rotationally driven economically and efficiently even when the casting drum is enlarged. Furthermore, in the casting drum device 1 of the present invention, as in the conventional case, the entire casting drum is not supported by the shaft and rotated, but only the rotating ring 4 needs to be supported and rotated. Even when the size of the casting drum is increased, the weight of the rotating part can be reduced, and the support interval of the rotating part can be shortened, so that the deflection of the casting drum due to its own weight can be suppressed small.
  • the film thickness of 5 can be easily kept uniform.
  • the casting drum device 1 of the present invention is a) heating means and / or according to the material resin of the synthetic resin film / sheet 5 and the physical properties / characteristics required for the synthetic resin film / sheet 5
  • the surface temperature of the rotary ring 4 can be freely set by adjusting the shape of the fixed shaft 2 on which the cooling means 3 is arranged and / or b) the arrangement of the heating means and / or the cooling means 3 on the surface of the fixed shaft 2 ⁇ Can be controlled.
  • the rotation direction of the rotary ring 4 (longitudinal direction of the synthetic resin film / sheet 5) and the direction parallel to the central axis 9 of the rotary ring 4 (synthetic resin film
  • the surface temperature of the rotary ring 4 in the width direction of the sheet 5 can be freely set and controlled.
  • the basic technical idea of the present invention is to set and control the surface temperature of the rotary ring 4 by the heating means and / or the cooling means 3 disposed separately from the rotary ring 4, and the fixed shaft 2 is These heating means and / or cooling means 3 are used as suitable means for placing at predetermined positions.
  • the surface 3A on the rotary ring 4 side of the heating means and / or the cooling means 3 is provided in the cross section orthogonal to the central axis 9 of the rotary ring 4
  • the heating means and / or the cooling means 3 are arranged on the surface of the fixed shaft 2 so as to be substantially parallel to the inner surface 4A of 4.
  • the surface 3 A on the rotary ring 4 side of the heating means and / or the cooling means 3 is an arc centered on the central axis 9 of the rotary ring 4 It is preferable to arrange the heating means and / or the cooling means 3 on the surface of the fixed shaft 2 so as to be roughly above.
  • ⁇ Shape of fixed shaft> As the shape (surface shape, cross-sectional shape, etc.) of the fixed shaft 2, an appropriate shape capable of disposing the heating means and / or the cooling means 3 at a position where the surface temperature of the rotary ring 4 can be appropriately set and controlled can be adopted. .
  • the surface temperature of the rotary ring 4 can be adjusted according to the distance between the rotary ring 4 and the heating means and / or the cooling means 3. It is also possible to set and control the distribution of the surface temperature of the rotary ring 4 with the shape being an elliptical shape.
  • the heating means and / or the cooling means 3 is the center of the rotating ring 4 It is preferable to arrange on the surface of the fixed shaft 2 so as to be substantially parallel to the shaft 9.
  • Heating means and / or the cooling means As the heating means and / or the cooling means 3, heating means and cooling means generally used in casting drums as described in Patent Documents 1 to 3 can be adopted.
  • the heating means include heating means using electromagnetic induction, heating means using an infrared heater, heating means using a heating medium, heating means using a gas heater, and the like;
  • the cooling means etc. which supply a cooling medium to, or spray a cooling medium etc. are mentioned.
  • the following method can be used to set and control the surface temperature of the rotary ring 4.
  • the surface temperature of the rotary ring 4 is the rotation direction of the rotary ring 4 (longitudinal direction of synthetic resin film / sheet 5) and central axis of the rotary ring 4 It can be set and controlled freely in parallel with 9 (in the width direction of the synthetic resin film / sheet 5).
  • ⁇ Heating means> As the heating means in the heating means and / or the cooling means 3, a known induction heating means capable of heating the separated rotary ring 4 can be used, but the response is good and the surface temperature of the rotary ring 4 is finely set. -It is preferable to employ an induction heating means using an induction coil, a heating means using an infrared heater, and the like, as it can be controlled.
  • the induction heating means (IH) using an induction coil heats the rotary ring 4 by flowing an alternating current through the induction coil to generate magnetic lines of force with varying strength, and has recently been used for cooking utensils etc. It is Further, the heating means (IR) using an infrared heater heats the rotary ring 4 by supplying an electric current to the infrared heater to generate an infrared ray, and is used for a heating device or the like.
  • ⁇ Cooling means> As a cooling means in the heating means and / or the cooling means 3, a path such as a conduit is provided on the surface of the fixed shaft 2, and a cooling means for supplying a cooling medium to this path and / or a nozzle etc. It is possible to use a cooling means or the like which has a blowout port and sprays a cooling medium on the inner surface 4A of the rotary ring 4 from this blowout port, but from the viewpoint of responsiveness, cooling efficiency, etc. It is preferable to use a cooling means for blowing a cooling medium.
  • the material of the fixed shaft 2 and the rotary ring 4 is not particularly limited, but stainless steel can be preferably used from the viewpoint of physical properties, characteristics, cost and the like.
  • the weight of the fixed shaft 2 can be reduced by making the fixed shaft 2 hollow as long as the required strength can be secured.
  • the rotary ring 4 is preferably a hollow cylinder made of stainless steel from the viewpoints of physical properties, properties, cost, weight reduction and the like.
  • a laminated hollow cylinder formed of an inner layer made of carbon fiber reinforced plastic (CFRP) and an outer layer made of stainless steel, and carbon fiber reinforced plastic (CFRP) More preferably, the hollow cylinder is made of
  • the surface of the rotary ring 4 it is preferable to metal-plate the surface of the rotary ring 4 in order to prevent damage.
  • the type of metal plating for example, chromium plating, nickel plating, zinc plating, etc. are suitably used, and it can be used alone or in combination of two or more types of layers, but in particular the ease of surface smoothing and its durability
  • the outermost surface is preferably plated with chromium, and the surface roughness is preferably 3S or less, particularly 0.5S or less.
  • a publicly known general method can be adopted as a method of rotationally driving the rotary ring 4.
  • various gears can be provided at the end of the rotary ring 4 and can be rotationally driven by an electric motor.
  • a non-backcrash gear capable of rotating the rotary ring 4 without spots can be used.
  • the weight can be reduced to reduce the slippage, it is also possible to drive the rotary ring 4 with a belt.
  • the casting drum device of the present invention preferably comprises a cooling device 8 for supplying a cooling medium such as air or mist toward the surface of the rotary ring 4 around the rotary ring 4.
  • the temperature of the liquid synthetic resin 7 and / or the synthetic resin film / sheet 5 can be set and controlled more appropriately by the auxiliary cooling using the cooling device 8.
  • the temperature of the sheet 5 can be appropriately set and controlled, and the releasability of the synthetic resin film / sheet 5 can be improved.
  • the method for producing a synthetic resin film / sheet using the casting drum device according to the present invention can produce a synthetic resin film / sheet 5 using the above-mentioned casting drum device, even when the casting drum is upsized. Since the rotation distance can be driven economically and efficiently, and the supporting distance of the rotating part can be shortened, the deflection of the casting drum due to its own weight can be reduced, and the synthetic resin film having a uniform thickness can be obtained.
  • the sheet 5 can be easily manufactured.
  • the heating means and / or the cooling means 3 are arranged on the surface of the fixed shaft 2 and / or the shape of the fixed shaft 2 on which a) the heating means and / or the cooling means 3 are arranged
  • the surface temperature of the rotary ring 4 in the direction of rotation of 4 (longitudinal direction of the synthetic resin film / sheet 5) and in the direction parallel to the central axis 9 of the rotary ring 4 (width direction of the synthetic resin film / sheet 5) -It becomes possible to control, and the surface temperature of the casting drum can be freely set and controlled according to the physical properties and characteristics required for the resin of the synthetic resin film and sheet 5, and the synthetic resin film and sheet 5, etc. .
  • the casting drum device is configured to include the fixed shaft and the hollow cylindrical rotating ring rotatably attached to the fixed shaft, thereby reducing the weight of the rotating portion Even when the casting drum is enlarged, it can be rotationally driven economically and efficiently. Furthermore, the weight of the rotating portion can be reduced, the supporting distance of the rotating portion can be shortened, and the rigidity of the cross section can be increased, so that the bending of the casting drum due to its own weight can be reduced.
  • the film thickness of the synthetic resin film / sheet can be kept uniform.
  • the direction of rotation of the rotating ring by adjusting the arrangement of the heating and / or cooling means on the surface of the fixed shaft and / or the shape of the fixed shaft on which a) the heating and / or cooling means are arranged It becomes possible to freely set and control the surface temperature of the rotating ring in the direction parallel to the longitudinal axis of the synthetic resin film / sheet 5 and the central axis of the rotating ring (the width direction of the synthetic resin film / sheet 5)
  • the surface temperature of the casting drum can be freely set and controlled according to the physical properties and characteristics required of the synthetic resin film / sheet material resin and the synthetic resin film / sheet.
  • the casting drum is enlarged by producing a synthetic resin film or sheet using the casting drum device as described above.
  • synthetic resin films and sheets can be produced economically and efficiently.
  • a synthetic resin film / sheet having a uniform film thickness can be easily produced, and a synthetic resin film / sheet having the required physical properties and characteristics can be easily produced.

Abstract

Provided are a casting drum device and a method for manufacturing a synthetic resin film/sheet using the casting drum device, whereby a uniform film thickness of a synthetic resin film/sheet can be ensured even when a casting drum has increased size, and the surface temperature of the casting drum can be freely set/controlled in accordance with the material resin of the synthetic resin film/sheet and the physical properties/characteristics, etc., required in the synthetic resin film/sheet. This casting drum device addresses the aforementioned problem by being constituted so as to be provided with a fixed shaft, a heating means and/or a cooling means disposed on the surface of the fixed shaft, and a hollow cylindrical rotating ring rotatably attached to the fixed shaft so as to cover the heating means and/or the cooling means, the rotating ring being heated and/or cooled by the heating means and/or the cooling means. The method for manufacturing a synthetic resin film/sheet using the casting drum device according to the present invention addresses the aforementioned problem by manufacturing a synthetic resin film/sheet using a casting drum device such as is described above.

Description

キャスティングドラム装置およびこのキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法Casting drum device and method of manufacturing synthetic resin film / sheet using the casting drum device
　本発明は、合成樹脂フィルム・シート成形する際に用いられるキャスティングドラム装置およびこのキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法に関するものである。 The present invention relates to a casting drum apparatus used in forming a synthetic resin film / sheet and a method of producing a synthetic resin film / sheet using the casting drum apparatus.
　合成樹脂フィルム・シートは、溶融押出成型法、溶液流延法等により製造される。
　溶融押出成型法は、最も一般的な合成樹脂フィルム・シートの製造方法であり、押出機内で加熱して溶融させた熱可塑性樹脂を押出金型の吐出口から押し出し、ドラム上で冷却することにより、合成樹脂フィルム・シートが製造される。 The synthetic resin film / sheet is produced by a melt extrusion molding method, a solution casting method or the like.
Melt extrusion molding is the most common method for producing synthetic resin films and sheets, and it is made by extruding a thermoplastic resin heated and melted in an extruder from a discharge port of an extrusion mold and cooling it on a drum. , Synthetic resin film sheets are manufactured.
　溶液流延法は、溶融させると分解しやすい樹脂または融点が高い樹脂を用いて合成樹脂フィルム・シートを製造する場合によく用いられる製造方法であり、合成樹脂を溶媒に溶解させた溶液を、表面を平滑にしたドラムまたは平滑ベルト上に供給した後、溶液を加熱・乾燥させることにより、合成樹脂フィルム・シートが製造される。溶液流延法で製造された合成樹脂フィルム・シートは、高分子の配向が生じていないため強度や光学特性に方向性がない、厚み精度が高い、平滑性、透明性および光沢性に優れる等の優れた物性・特性を有することから、光学用途に多く用いられる。 The solution casting method is a production method often used when producing a synthetic resin film or sheet using a resin which is easily decomposed when melted or a resin having a high melting point, and a solution obtained by dissolving a synthetic resin in a solvent is The synthetic resin film / sheet is produced by heating and drying the solution after being supplied onto a drum or a smooth belt having a smooth surface. Synthetic resin films and sheets produced by solution casting do not have polymer orientation, so there is no directionality in strength or optical properties, high thickness accuracy, and excellent smoothness, transparency and gloss etc. It is often used in optical applications because it has excellent physical properties and characteristics.
　特許文献１には、図４に示すように、外筒２１、内筒２２、外筒２１と内筒２２間の空隙２３を仕切るらせん溝隔壁２４、一方の軸２５、他方の軸２６、および液状熱媒分岐管２７が一体に形成されたキャスティングドラム２０が開示されている。このキャスティングドラム２０は一方の軸２５および他方の軸２６で支持されて回転すると共に、冷却水が、一方の軸２５の内部→液状熱媒分岐管２７→外筒２１と内筒２２間の空隙２３→液状熱媒分岐管２７→他方の軸２６の内部という経路を通じて供給され、キャスティングドラム２０の表面が冷却される。 In Patent Document 1, as shown in FIG. 4, an outer cylinder 21, an inner cylinder 22, a spiral groove partition 24 that divides a gap 23 between the outer cylinder 21 and the inner cylinder 22, one shaft 25, the other shaft 26, and A casting drum 20 is disclosed in which a liquid heat medium branch pipe 27 is integrally formed. The casting drum 20 is supported and rotated by one shaft 25 and the other shaft 26, and the cooling water flows from the inside of one shaft 25 → the liquid heat medium branch pipe 27 → the gap between the outer cylinder 21 and the inner cylinder 22. The surface of the casting drum 20 is cooled by being supplied through a route of 23 → liquid heat medium branch pipe 27 → the inside of the other shaft 26.
　特許文献２には、ポリカーボネート樹脂溶液を金属ベルト上で固形化する際の加熱方法として、赤外線加熱、加熱ガス接触、電磁誘導加熱、ガスヒーター加熱等任意の加熱方法を用いることが開示されている。 Patent Document 2 discloses that any heating method such as infrared heating, contact with heated gas, electromagnetic induction heating, gas heater heating, etc. is used as a heating method when solidifying a polycarbonate resin solution on a metal belt. .
　特許文献３には、ポリビニルアルコール系樹脂を含有する原液を、ダイを通過させ加熱したドラム型ロール上に流延して製膜するにあたり、ドラム型ロールの表面温度を３℃／ｈｒ以下の条件で７０～１００℃の範囲まで昇温させた後に流延を開始することが開示されている。このドラム型ロールの加熱手段としてはスチーム、加熱媒体、温水、電気ヒーター等が挙げられており、また、温度ムラをコントロールするために、ヒータや誘導加熱コイル等を熱源として使用する時は、熱源の間隔を狭くすることが挙げられている。 In patent document 3, the surface temperature of the drum-type roll is 3 ° C./hr or less in forming a film by casting a stock solution containing a polyvinyl alcohol-based resin on a drum-type roll heated by passing through a die. It is disclosed to start casting after raising the temperature to the range of 70 to 100.degree. As a heating means of this drum type roll, steam, a heating medium, warm water, an electric heater, etc. are mentioned, Moreover, when using a heater, an induction heating coil, etc. as a heat source, in order to control temperature nonuniformity. It is mentioned to narrow the interval of
国際公開第９９／０２３２８号WO 99/02328 特開２００５－２００５８９号公報JP 2005-200589 A 特開２００５－２３８８３３号公報JP, 2005-238833, A
　従来の合成樹脂フィルム・シートを溶融押出成型法、溶液流延法等により製造する際に用いられるキャスティングドラムとしては、一般に、上記特許文献１に開示されているように、軸部、スポーク、胴部等の構成部材が一体に形成されたものが用いられている。このキャスティングドラムは、軸部で支持されて回転すると共に、加熱媒体・冷却媒体が供給されて胴部表面が加熱・冷却される。 Generally as a casting drum used when manufacturing the conventional synthetic resin film and sheet by the melt-extrusion molding method, the solution casting method, etc., as disclosed in the above-mentioned patent documents 1, a shaft, a spoke, a trunk What integrally formed component members, such as a part, is used. The casting drum is supported and rotated by the shaft, and a heating medium / cooling medium is supplied to heat and cool the surface of the body.
　しかしながら、近年、合成樹脂フィルム・シートの量産化、幅広化、薄膜化等の要望・需要に応じるために、キャスティングドラムは大型化されているが（例えば、直径が４ｍ、幅が６ｍ）、大型化し重量が増加したキャスティングドラムを回転駆動するためには多大なエネルギーを要し、さらに、大型化し重量が増加したキャスティングドラムを軸部で支持し回転させることから、キャスティングドラムの自重による撓みが大きくなり、合成樹脂フィルム・シートの膜厚を均一に保つのが難しくなっている。また、キャスティングドラムに代えて、特許文献２に開示されるような金属ベルトを採用することも可能ではあるが、金属ベルトを採用した場合には設備コストが高くなる等の問題が生じる。 However, in recent years, the casting drum has been increased in size (for example, 4 m in diameter and 6 m in width) to meet the demand and demand for mass production, widening, and thinning of synthetic resin films and sheets (for example, large size) It takes a lot of energy to rotationally drive the casting drum with increased weight and weight, and furthermore, since the casting drum with large and increased weight is supported and rotated by the shaft, deflection by the weight of the casting drum is large Therefore, it is difficult to keep the film thickness of the synthetic resin film / sheet uniform. Further, although it is possible to adopt a metal belt as disclosed in Patent Document 2 in place of the casting drum, the use of a metal belt causes problems such as high equipment cost.
　さらに、近年、高度な物性・特性を有する合成樹脂フィルム・シートが求められるようになったことに伴い、特許文献３に開示されるような、キャスティングドラムの全周の表面温度を均一に加熱・冷却するのではなく、キャスティングドラム表面が、合成樹脂を溶媒に溶解させた溶液または溶融させた合成樹脂（以下、「液状合成樹脂」ともいう。）と接触する位置に応じて、キャスティングドラム表面の加熱温度を設定・制御する必要性が生じてきた。 Furthermore, with the recent demand for synthetic resin films and sheets having high physical properties and characteristics, the surface temperature of the entire circumference of the casting drum can be uniformly heated as disclosed in Patent Document 3 Depending on the position where the casting drum surface is in contact with a solution in which a synthetic resin is dissolved in a solvent or a molten synthetic resin (hereinafter also referred to as "liquid synthetic resin"), cooling is not performed. The need arises to set and control the heating temperature.
　本発明者等は、上記の問題を解決することを鋭意検討し、本発明を成したものである。
　すなわち、本発明の課題は、キャスティングドラムを大型化した場合でも、経済的・効率的に回転駆動することができ、合成樹脂フィルム・シートの膜厚を均一に保つことができると共に、合成樹脂フィルム・シートの材料樹脂、合成樹脂フィルム・シートに求められる物性・特性等に応じて、キャスティングドラム表面温度を自由自在に設定・制御することができる、キャスティングドラム装置およびこのキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法を提供することにある。 The inventors of the present invention have made earnest studies to solve the above problems and have made the present invention.
That is, even when the casting drum is enlarged, the object of the present invention can be rotationally driven economically and efficiently, and the film thickness of the synthetic resin film / sheet can be kept uniform, and the synthetic resin film · Material of sheet, resin for casting, synthetic resin film, casting drum apparatus according to the physical properties and characteristics required for the sheet, and the like, and a casting drum apparatus capable of freely setting and controlling the surface temperature of the casting drum, and synthesis using this casting drum apparatus It is providing a manufacturing method of a resin film sheet.
　本発明のキャスティングドラム装置は、固定軸と、固定軸の表面に配置された加熱手段および／または冷却手段と、該加熱手段および／または冷却手段を覆うように、固定軸に対して回転可能に設けられた中空円筒形の回転環とを備え、固定軸の表面に配置された加熱手段および／または冷却手段により、回転環を加熱および／または冷却することにより、前記の課題を解決するものである。 The casting drum device of the present invention is rotatable relative to the fixed shaft so as to cover the fixed shaft, the heating means and / or the cooling means disposed on the surface of the fixed shaft, and the heating means and / or the cooling means. To solve the above-mentioned problems by heating and / or cooling the rotary ring by heating and / or cooling means provided with a hollow cylindrical rotary ring and provided on the surface of the fixed shaft. is there.
　また、本発明のキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法は、上記のようなキャスティングドラム装置を用いて、合成樹脂フィルム・シートを製造することにより、前記の課題を解決するものである。 Moreover, the method for producing a synthetic resin film / sheet using the casting drum device according to the present invention solves the above-mentioned problems by producing a synthetic resin film / sheet using the casting drum device as described above. It is.
　本発明の要旨を以下に示す。
（１）合成樹脂フィルム・シートを成形する際に用いられるキャスティングドラム装置であって、
　固定軸と、
　前記固定軸の表面に配置された加熱手段および／または冷却手段と、
　前記加熱手段および／または冷却手段を覆うように、前記固定軸に対して回転可能に設けられた中空円筒形の回転環とを備え、
　前記加熱手段および／または冷却手段により、前記回転環を加熱および／または冷却することを特徴とする、キャスティングドラム装置。
（２）前記加熱手段および／または冷却手段が、前記合成樹脂フィルム・シートの材料樹脂、前記合成樹脂フィルム・シートに求められる物性・特性等に応じて、前記固定軸の表面に配置されることを特徴とする、（１）に記載のキャスティングドラム装置。
（３）前記加熱手段および／または冷却手段が、回転環の中心軸と直交する断面において、前記加熱手段および／または冷却手段の前記回転環側の表面が、前記回転環の内側表面と略平行となるように配置されることを特徴とする、（１）または（２）に記載のキャスティングドラム装置。
（４）前記加熱手段および／または冷却手段が、前記回転環の中心軸と略平行となるように、前記固定軸の表面に配置されることを特徴とする、（１）～（３）のいずれかに記載のキャスティングドラム装置。
（５）前記加熱手段および／または冷却手段が、複数の帯状の加熱手段および／または冷却手段であることを特徴とする、（１）～（４）のいずれかに記載のキャスティングドラム装置。
（６）前記加熱手段が誘導コイルであり、この誘導コイルに交流電流を流して強度の変化する磁力線を発生させることにより、前記回転環を加熱することを特徴とする、（１）～（５）のいずれかに記載のキャスティングドラム装置。
（７）前記加熱手段が赤外線ヒーターであり、この赤外線ヒーターに電流を流して赤外線を発生させることにより、前記回転環を加熱することを特徴とする、（１）～（５）のいずれかに記載のキャスティングドラム装置。
（８）前記冷却手段が、経路に冷却媒体を供給する冷却手段および／または前記回転環の内側表面に冷却媒体を吹き付ける冷却手段であることを特徴とする、（１）～（７）のいずれかに記載のキャスティングドラム装置。
（９）前記回転環が、ステンレス製の中空円筒であることを特徴とする、（１）～（８）のいずれかに記載のキャスティングドラム装置。
（１０）前記回転環が、炭素繊維強化プラスチック（ＣＦＲＰ）の内層、ステンレス製の外層から形成された積層中空円筒、または炭素繊維強化プラスチック（ＣＦＲＰ）製の中空円筒であることを特徴とする、（１）～（８）のいずれかに記載のキャスティングドラム装置。
（１１）前記回転環の周囲に、前記回転環の表面に向けて冷却媒体を吹き付ける冷却装置を備えることを特徴とする、（１）～（１０）のいずれかに記載のキャスティングドラム装置。
（１２）前記（１）～（１１）のいずれかに記載のキャスティングドラム装置を用いることにより、合成樹脂を溶媒に溶解させた溶液または溶融させた合成樹脂から、合成樹脂フィルム・シートを成形することを特徴とする、合成樹脂シート・フィルムの製造方法。 The gist of the present invention is shown below.
(1) A casting drum device used when molding a synthetic resin film or sheet,
With a fixed axis,
Heating means and / or cooling means disposed on the surface of the fixed shaft;
A hollow cylindrical rotary ring rotatably provided relative to the fixed shaft so as to cover the heating means and / or the cooling means;
A casting drum apparatus characterized in that the rotating ring is heated and / or cooled by the heating means and / or the cooling means.
(2) The heating means and / or the cooling means are disposed on the surface of the fixed shaft according to the material resin of the synthetic resin film / sheet, the physical properties / characteristics required for the synthetic resin film / sheet, etc. The casting drum apparatus according to (1), characterized in that
(3) In a cross section where the heating means and / or the cooling means are orthogonal to the central axis of the rotary ring, the surface on the rotary ring side of the heating means and / or the cooling means is substantially parallel to the inner surface of the rotary ring The casting drum device according to (1) or (2), wherein the casting drum device is disposed as follows.
(4) The heating means and / or the cooling means are disposed on the surface of the fixed shaft so as to be substantially parallel to the central axis of the rotary ring, in (1) to (3) The casting drum apparatus in any one.
(5) The casting drum device according to any one of (1) to (4), wherein the heating means and / or the cooling means are a plurality of strip-like heating means and / or cooling means.
(6) The heating means is an induction coil, and an alternating current is caused to flow through the induction coil to generate magnetic flux lines of varying strength, thereby heating the rotary ring. The casting drum apparatus according to any one of the above.
(7) The heating means is an infrared heater, and current is supplied to the infrared heater to generate infrared rays, thereby heating the rotating ring, according to any one of (1) to (5). Casting drum apparatus as described.
(8) The cooling means is a cooling means for supplying a cooling medium to a passage and / or a cooling means for spraying a cooling medium on the inner surface of the rotary ring, any of (1) to (7) Casting drum device described in.
(9) The casting drum device according to any one of (1) to (8), wherein the rotary ring is a stainless steel hollow cylinder.
(10) The rotary ring is a laminated hollow cylinder formed of an inner layer of carbon fiber reinforced plastic (CFRP), an outer layer of stainless steel, or a hollow cylinder of carbon fiber reinforced plastic (CFRP), The casting drum device according to any one of (1) to (8).
(11) The casting drum device according to any one of (1) to (10), further comprising: a cooling device for blowing a cooling medium toward the surface of the rotary ring around the rotary ring.
(12) By using the casting drum apparatus according to any one of the above (1) to (11), a synthetic resin film / sheet is formed from a solution in which a synthetic resin is dissolved in a solvent or a molten synthetic resin. A method of producing a synthetic resin sheet or film, characterized in that
　本発明のキャスティングドラム装置は、表面に加熱手段および／または冷却手段が配置された固定軸と、該固定軸に対して回転可能に設けられた中空円筒形の回転環とを備えるように構成したことにより、回転部分を軽量化することができ、キャスティングドラムを大型化した場合でも経済的・効率的に回転駆動することができる。さらに、回転部分の支持間隔を短くすることができ、また、断面剛性を高めることができるため、キャスティングドラムの自重による撓みを小さく抑えることができ、合成樹脂フィルム・シートの膜厚を均一に保つことができる。 The casting drum device according to the present invention is configured to include a fixed shaft having heating means and / or cooling means disposed on the surface, and a hollow cylindrical rotary ring rotatably provided about the fixed shaft. Thus, the weight of the rotating portion can be reduced, and even if the casting drum is increased in size, it can be rotationally driven economically and efficiently. Furthermore, since the support interval of the rotating portion can be shortened, and the cross-sectional rigidity can be enhanced, the deflection of the casting drum due to its own weight can be suppressed small, and the film thickness of the synthetic resin film / sheet can be kept uniform. be able to.
　さらに、ａ）加熱手段および／または冷却手段が配置される固定軸の形状および／またはｂ）固定軸の表面における加熱手段および／または冷却手段の配置を調整することにより、回転環の回転方向（合成樹脂フィルム・シートの長手方向）および回転環の中心軸と平行方向（合成樹脂フィルム・シートの幅方向）における回転環の表面温度を、自由自在に設定・制御することが可能となり、合成樹脂フィルム・シートの材料樹脂、合成樹脂フィルム・シートに求められる物性・特性等に応じて、回転環の表面温度を自由自在に設定・制御することができる。 Furthermore, the direction of rotation of the rotating ring by adjusting the arrangement of the heating and / or cooling means on the surface of the fixed shaft and / or the shape of the fixed shaft on which a) the heating and / or cooling means are arranged It becomes possible to freely set and control the surface temperature of the rotary ring in the direction parallel to the longitudinal direction of the synthetic resin film / sheet and the central axis of the rotary ring (the width direction of the synthetic resin film / sheet). The surface temperature of the rotary ring can be freely set and controlled in accordance with the physical properties and characteristics required for the material resin of the film and sheet, and the synthetic resin film and sheet.
　また、本発明のキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法は、上記のようなキャスティングドラム装置を用いて、合成樹脂フィルム・シートを製造することにより、キャスティングドラムを大型化した場合でも、経済的・効率的に合成樹脂フィルム・シートを製造することができる。さらに、膜厚の均一な合成樹脂フィルム・シートを容易に製造することができ、求められる物性・特性等を有する合成樹脂フィルム・シートを容易に製造することができる。 In the method of producing a synthetic resin film or sheet using the casting drum device according to the present invention, the casting drum is enlarged by producing a synthetic resin film or sheet using the casting drum device as described above. However, synthetic resin films and sheets can be produced economically and efficiently. Furthermore, a synthetic resin film / sheet having a uniform film thickness can be easily produced, and a synthetic resin film / sheet having the required physical properties and characteristics can be easily produced.
本発明のキャスティングドラム装置の実施形態を示す、回転環の中心軸を含む断面の模式図である。It is a schematic diagram of the cross section containing the central axis of a rotating ring which shows embodiment of the casting drum apparatus of this invention. 図１のＡ－Ａ断面を示す模式図である。It is a schematic diagram which shows the AA cross section of FIG. 図２の部分拡大図である。It is the elements on larger scale of FIG. 従来例である、特許文献１のＦｉｇ．１０である。A conventional example shown in FIG. 10
　以下、本発明のキャスティングドラム装置およびこのキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法について、図面も用いながら詳細に説明するが、本発明はこれらに限定されるものではない。 Hereinafter, the casting drum device of the present invention and the method for producing a synthetic resin film / sheet using the casting drum device will be described in detail with reference to the drawings, but the present invention is not limited thereto.
　まず、本発明のキャスティングドラム装置およびこのキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法の一般的な事項について説明する。 First, general items of the casting drum device of the present invention and the method for producing a synthetic resin film / sheet using the casting drum device will be described.
＜キャスティングドラムを用いた合成樹脂フィルム・シートの製造一般＞
　合成樹脂フィルム・シートは、溶融押出成型法、溶液流延法等により製造される。
　溶融押出成型法は、最も一般的な合成樹脂フィルム・シートの製造方法であり、押出機内で加熱し溶融させた熱可塑性樹脂を押出金型の吐出口から押し出し、ドラム上で冷却することにより、合成樹脂フィルム・シートが製造される。 <General production of synthetic resin films and sheets using casting drums>
The synthetic resin film / sheet is produced by a melt extrusion molding method, a solution casting method or the like.
Melt extrusion molding is the most common method for producing synthetic resin films and sheets, and it is made by extruding a thermoplastic resin heated and melted in an extruder from a discharge port of an extrusion mold and cooling it on a drum. A synthetic resin film sheet is produced.
　溶液流延法は、溶融させると分解しやすい樹脂または融点が高い樹脂を用いて合成樹脂フィルム・シートを製造する場合によく用いられる製造方法であり、合成樹脂を溶媒に溶解させた溶液を、表面を平滑にしたドラムまたは平滑ベルト上に供給した後、加熱・乾燥させることにより、合成樹脂フィルム・シートが製造される。溶液流延法で製造された合成樹脂フィルム・シートは、高分子の配向が生じていないため強度や光学特性に方向性がない、厚み精度が高い、平滑性、透明性および光沢性に優れる等の優れた物性・特性を有するため、光学用途に多く用いられる。 The solution casting method is a production method often used when producing a synthetic resin film or sheet using a resin which is easily decomposed when melted or a resin having a high melting point, and a solution obtained by dissolving a synthetic resin in a solvent is After being supplied onto a drum or a smooth belt having a smooth surface, a synthetic resin film / sheet is produced by heating and drying. Synthetic resin films and sheets produced by solution casting do not have polymer orientation, so there is no directionality in strength or optical properties, high thickness accuracy, and excellent smoothness, transparency and gloss etc. It is often used in optical applications because it has excellent physical properties and characteristics.
　キャスティングドラムとしては、図４に示すような、外筒２１、内筒２２、外筒２１と内筒２２間の空隙２３を仕切るらせん溝隔壁２４、一方の軸２５、他方の軸２６、および液状熱媒分岐管２７が一体に形成されたキャスティングドラム２０が用いられ、このキャスティングドラム２０は一方の軸２５および他方の軸２６で支持されて回転すると共に、冷却水が、一方の軸２５の内部→液状熱媒分岐管２７→外筒２１と内筒２２間の空隙２３→液状熱媒分岐管２７→他方の軸２６の内部という経路を通じて供給され、キャスティングドラム２０の表面が冷却される。 As the casting drum, as shown in FIG. 4, an outer cylinder 21, an inner cylinder 22, a spiral groove partition 24 separating an air gap 23 between the outer cylinder 21 and the inner cylinder 22, one shaft 25, the other shaft 26 and a liquid A casting drum 20 in which a heat medium branch pipe 27 is integrally formed is used, and the casting drum 20 is supported and rotated by one shaft 25 and the other shaft 26, and the cooling water is provided inside the one shaft 25. The liquid heat medium branch pipe 27 → the gap 23 between the outer cylinder 21 and the inner cylinder 22 → the liquid heat medium branch pipe 27 → the inside of the other shaft 26 is supplied, and the surface of the casting drum 20 is cooled.
　溶融押出成型法では、液状合成樹脂を冷却するために、キャスティングドラム内に水等の冷却媒体が供給される（特許文献１）。また、溶液流延法では、液状合成樹脂から溶媒を除くために、キャスティングドラム内にスチーム、温水等の加熱媒体が供給されたり、電気ヒーター、誘導加熱コイル等の熱源が用いられる（特許文献２および３）。 In the melt extrusion molding method, a cooling medium such as water is supplied into the casting drum in order to cool the liquid synthetic resin (Patent Document 1). In the solution casting method, a heating medium such as steam or warm water is supplied into the casting drum, or a heat source such as an electric heater or an induction heating coil is used to remove the solvent from the liquid synthetic resin. And 3).
＜本発明の主要な特徴＞
　本発明のキャスティングドラム装置の実施形態を図１～３に示す。図１は回転環４の中心軸９を含む断面の模式図であり、図２は図１のＡ－Ａ断面を示す模式図であり、図３は図２の部分拡大図である。 <Main Features of the Present Invention>
An embodiment of the casting drum device of the present invention is shown in FIGS. FIG. 1 is a schematic view of a cross section including the central axis 9 of the rotary ring 4, FIG. 2 is a schematic view showing an AA cross section of FIG. 1, and FIG. 3 is a partially enlarged view of FIG.
　本発明のキャスティングドラム装置の主要な特徴は、
１）表面に加熱手段および／または冷却手段３が配置された固定軸２と、該固定軸２に対して回転可能に取り付けられた中空円筒形の回転環４とを備えるように構成されていること、および
２）固定軸２の表面に配置された加熱手段および／または冷却手段３により、回転環４を加熱および／または冷却するように構成されていること
にある。 The main features of the casting drum device of the present invention are:
1) A fixed shaft 2 on the surface of which heating means and / or cooling means 3 are arranged, and a hollow cylindrical rotary ring 4 rotatably attached to the fixed shaft 2 And 2) heating and / or cooling means 3 arranged on the surface of the fixed shaft 2 is configured to heat and / or cool the rotary ring 4.
　上記１）の構成により、本発明のキャスティングドラム装置１は、キャスティングドラムを大型化した場合でも、経済的・効率的に回転駆動することができる。さらに、本発明のキャスティングドラム装置１では、従来のように、キャスティングドラム全体を軸部で支持して回転させるのではなく、回転環４だけを支持して回転させればよいことから、キャスティングドラムを大型化した場合でも、回転部分を軽量化することができ、また、回転部分の支持間隔を短くすることができるため、キャスティングドラムの自重による撓みを小さく抑えることができ、合成樹脂フィルム・シート５の膜厚を容易に均一に保つことができる。 According to the configuration of the above 1), the casting drum device 1 of the present invention can be rotationally driven economically and efficiently even when the casting drum is enlarged. Furthermore, in the casting drum device 1 of the present invention, as in the conventional case, the entire casting drum is not supported by the shaft and rotated, but only the rotating ring 4 needs to be supported and rotated. Even when the size of the casting drum is increased, the weight of the rotating part can be reduced, and the support interval of the rotating part can be shortened, so that the deflection of the casting drum due to its own weight can be suppressed small. The film thickness of 5 can be easily kept uniform.
　上記２）の構成により、本発明のキャスティングドラム装置１は、合成樹脂フィルム・シート５の材料樹脂、合成樹脂フィルム・シート５に求められる物性・特性等に応じて、ａ）加熱手段および／または冷却手段３が配置される固定軸２の形状および／またはｂ）固定軸２の表面における加熱手段および／または冷却手段３の配置を調整することにより、回転環４の表面温度を自由自在に設定・制御することができる。すなわち、加熱手段および／または冷却手段３の配置を調整することにより、回転環４の回転方向（合成樹脂フィルム・シート５の長手方向）および回転環４の中心軸９と平行方向（合成樹脂フィルム・シート５の幅方向）における回転環４の表面温度を、自由自在に設定・制御することができる。 According to the constitution of the above 2), the casting drum device 1 of the present invention is a) heating means and / or according to the material resin of the synthetic resin film / sheet 5 and the physical properties / characteristics required for the synthetic resin film / sheet 5 The surface temperature of the rotary ring 4 can be freely set by adjusting the shape of the fixed shaft 2 on which the cooling means 3 is arranged and / or b) the arrangement of the heating means and / or the cooling means 3 on the surface of the fixed shaft 2・ Can be controlled. That is, by adjusting the arrangement of the heating means and / or the cooling means 3, the rotation direction of the rotary ring 4 (longitudinal direction of the synthetic resin film / sheet 5) and the direction parallel to the central axis 9 of the rotary ring 4 (synthetic resin film The surface temperature of the rotary ring 4 in the width direction of the sheet 5 can be freely set and controlled.
＜加熱手段および／または冷却手段の固定軸の表面への配置＞
　本件発明の基本的な技術思想は、回転環４の表面温度を、回転環４から分離して配置した加熱手段および／または冷却手段３によって、設定・制御することにあり、固定軸２は、これらの加熱手段および／または冷却手段３を、所定位置に配置するための好適な手段として用いる。 <Arrangement of Heating Means and / or Cooling Means on the Surface of Fixed Shaft>
The basic technical idea of the present invention is to set and control the surface temperature of the rotary ring 4 by the heating means and / or the cooling means 3 disposed separately from the rotary ring 4, and the fixed shaft 2 is These heating means and / or cooling means 3 are used as suitable means for placing at predetermined positions.
　回転環４の表面温度を適切に設定・制御するためには、回転環４の中心軸９と直交する断面において、加熱手段および／または冷却手段３の回転環４側の表面３Ａを、回転環４の内側表面４Ａと略平行となるように、加熱手段および／または冷却手段３を固定軸２の表面に配置することが好ましい。別の表現で言えば、回転環４の中心軸９と直交する断面において、加熱手段および／または冷却手段３の回転環４側の表面３Ａが、回転環４の中心軸９を中心とする円弧上に大凡来るように、加熱手段および／または冷却手段３を固定軸２の表面に配置することが好ましい。 In order to set and control the surface temperature of the rotary ring 4 appropriately, the surface 3A on the rotary ring 4 side of the heating means and / or the cooling means 3 is provided in the cross section orthogonal to the central axis 9 of the rotary ring 4 Preferably, the heating means and / or the cooling means 3 are arranged on the surface of the fixed shaft 2 so as to be substantially parallel to the inner surface 4A of 4. In other words, in a cross section orthogonal to the central axis 9 of the rotary ring 4, the surface 3 A on the rotary ring 4 side of the heating means and / or the cooling means 3 is an arc centered on the central axis 9 of the rotary ring 4 It is preferable to arrange the heating means and / or the cooling means 3 on the surface of the fixed shaft 2 so as to be roughly above.
＜固定軸の形状＞
　固定軸２の形状（表面形状、断面形状等）としては、回転環４の表面温度を適切に設定・制御できる位置に、加熱手段および／または冷却手段３を配置可能な適宜の形状を採用できる。 <Shape of fixed shaft>
As the shape (surface shape, cross-sectional shape, etc.) of the fixed shaft 2, an appropriate shape capable of disposing the heating means and / or the cooling means 3 at a position where the surface temperature of the rotary ring 4 can be appropriately set and controlled can be adopted. .
　加熱手段および／または冷却手段３を、回転環４の中心軸９と平行方向に配置する際には、加熱手段および／または冷却手段３の回転環４の回転方向の幅が狭い場合は、固定軸２の断面形状を円形としても配置にそれほど支障を生じないが、この幅が広い場合は、配置が支障なく行えるように、固定軸２の断面形状を適当な多角形とすることが好ましい。 When arranging the heating means and / or the cooling means 3 in a direction parallel to the central axis 9 of the rotary ring 4, fixing is carried out when the width of the rotary ring 4 of the heating means and / or the cooling means 3 in the rotational direction is narrow. Even if the cross-sectional shape of the shaft 2 is circular, it does not cause much trouble in the arrangement, but when the width is wide, it is preferable to make the cross-sectional shape of the fixed shaft 2 an appropriate polygon so that the arrangement can be performed without any problems.
　また、回転環４の肉厚が一定である場合には、回転環４と加熱手段および／または冷却手段３との距離に応じて回転環４の表面温度が調整できることから、固定軸２の断面形状を楕円形のような形状として、回転環４の表面温度の分布を設定・制御することもできる。 In addition, when the thickness of the rotary ring 4 is constant, the surface temperature of the rotary ring 4 can be adjusted according to the distance between the rotary ring 4 and the heating means and / or the cooling means 3. It is also possible to set and control the distribution of the surface temperature of the rotary ring 4 with the shape being an elliptical shape.
　また、通常、合成樹脂フィルム・シート５の幅方向の物性・特性として均一なものが求められることが多いが、このような場合には、加熱手段および／または冷却手段３を回転環４の中心軸９と略平行となるように、固定軸２の表面に配置することが好ましい。 Usually, in many cases, physical properties and characteristics in the width direction of the synthetic resin film / sheet 5 are required to be uniform, but in such a case, the heating means and / or the cooling means 3 is the center of the rotating ring 4 It is preferable to arrange on the surface of the fixed shaft 2 so as to be substantially parallel to the shaft 9.
＜加熱手段および／または冷却手段＞
　加熱手段および／または冷却手段３としては、特許文献１～３にも記載されているような、キャスティングドラムで一般に用いられている加熱手段、冷却手段を採用することができる。具体的には、加熱手段としては、電磁誘導を用いる加熱手段、赤外線ヒーターを用いる加熱手段、加熱媒体を用いる加熱手段、ガスヒーターを用いる加熱手段等が挙げられ、また、冷却手段としては、経路に冷却媒体を供給したり、冷却媒体を吹き付けたりする冷却手段等が挙げられる。 <Heating means and / or cooling means>
As the heating means and / or the cooling means 3, heating means and cooling means generally used in casting drums as described in Patent Documents 1 to 3 can be adopted. Specifically, examples of the heating means include heating means using electromagnetic induction, heating means using an infrared heater, heating means using a heating medium, heating means using a gas heater, and the like; The cooling means etc. which supply a cooling medium to, or spray a cooling medium etc. are mentioned.
　回転環４の表面温度をきめ細かく設定・制御するためには、複数の加熱手段および／または冷却手段３を配置することが好ましく、また、回転環４の表面温度を効果的・効率的に設定・制御するためには、複数の帯状の加熱手段および／または冷却手段３を配置することが好ましい。 In order to finely set and control the surface temperature of the rotary ring 4, it is preferable to dispose a plurality of heating means and / or cooling means 3, and set the surface temperature of the rotary ring 4 effectively and efficiently. In order to control, it is preferable to arrange a plurality of strip-like heating means and / or cooling means 3.
＜回転環の表面温度の設定・制御＞
　回転環４の表面温度を設定・制御するために、次のような方法を用いることができる。
１）固定軸２の表面における、加熱手段および／または冷却手段３の配置を調整する方法、
２）固定軸２の形状（表面形状、断面形状等）の設定により、回転環４と加熱手段および／または冷却手段３との距離を調整する方法、
３）加熱手段および／または冷却手段３に供給される電気の電力・周波数、加熱媒体・冷却媒体の温度等を調整する方法、
４）上記１）～３）の方法を併用する方法
上記の方法により、回転環４の表面温度を回転環４の回転方向（合成樹脂フィルム・シート５の長手方向）および回転環４の中心軸９と平行方向（合成樹脂フィルム・シート５の幅方向）に自由自在に設定・制御することができる。 <Setting and control of surface temperature of rotating ring>
The following method can be used to set and control the surface temperature of the rotary ring 4.
1) A method of adjusting the arrangement of the heating means and / or the cooling means 3 on the surface of the fixed shaft 2;
2) A method of adjusting the distance between the rotary ring 4 and the heating means and / or the cooling means 3 by setting the shape (surface shape, cross-sectional shape, etc.) of the fixed shaft 2;
3) A method of adjusting the power and frequency of the electricity supplied to the heating means and / or the cooling means 3, the temperature of the heating medium and the cooling medium, etc.
4) Method of using the above methods 1) to 3) in combination by the above method, the surface temperature of the rotary ring 4 is the rotation direction of the rotary ring 4 (longitudinal direction of synthetic resin film / sheet 5) and central axis of the rotary ring 4 It can be set and controlled freely in parallel with 9 (in the width direction of the synthetic resin film / sheet 5).
　設定・制御のしやすさ、経済性等の観点からは、
ａ）回転環４の中心軸９と直交する断面形状が、均一な円形または多角形である固定軸２を用い、
ｂ）複数の帯状の加熱手段および／または冷却手段３を、回転環４の中心軸９と略平行となるように、固定軸２の表面に配置して、
上記１）の方法により、回転環４の表面温度の設定・制御を行うことが好ましい。 From the viewpoint of easiness of setting and control, economy, etc.
a) Using the fixed axis 2 whose cross-sectional shape orthogonal to the central axis 9 of the rotary ring 4 is uniform circular or polygonal,
b) arranging a plurality of strip-like heating means and / or cooling means 3 on the surface of the fixed shaft 2 so as to be substantially parallel to the central axis 9 of the rotary ring 4;
It is preferable to set and control the surface temperature of the rotary ring 4 by the method of the above 1).
＜加熱手段＞
　加熱手段および／または冷却手段３における加熱手段としては、離間する回転環４を加熱できる公知の誘導加熱手段を用いることができるが、応答性が良好であり、回転環４の表面温度をきめ細かく設定・制御できることから、誘導コイルを用いる誘導加熱手段、赤外線ヒーターを用いる加熱手段等を採用することが好ましい。 <Heating means>
As the heating means in the heating means and / or the cooling means 3, a known induction heating means capable of heating the separated rotary ring 4 can be used, but the response is good and the surface temperature of the rotary ring 4 is finely set. -It is preferable to employ an induction heating means using an induction coil, a heating means using an infrared heater, and the like, as it can be controlled.
　誘導コイルを用いる誘導加熱手段（ＩＨ）は、誘導コイルに交流電流を流して強度の変化する磁力線を発生させることにより、回転環４を加熱するものであり、近年、調理器具等に利用されているものである。また、赤外線ヒーターを用いる加熱手段（ＩＲ）は、赤外線ヒーターに電流を流して赤外線を発生させることにより、回転環４を加熱するものであり、暖房機器等に利用されているものである。 The induction heating means (IH) using an induction coil heats the rotary ring 4 by flowing an alternating current through the induction coil to generate magnetic lines of force with varying strength, and has recently been used for cooking utensils etc. It is Further, the heating means (IR) using an infrared heater heats the rotary ring 4 by supplying an electric current to the infrared heater to generate an infrared ray, and is used for a heating device or the like.
＜冷却手段＞
　加熱手段および／または冷却手段３における冷却手段としては、固定軸２の表面に管路等の経路を設け、この経路に冷却媒体を供給する冷却手段および／または固定軸２の表面にノズル等の吹き出し口を設け、この吹き出し口から回転環４の内側表面４Ａに冷却媒体を吹き付ける冷却手段等を用いることができるが、応答性、冷却効率等の観点からは、回転環４の内側表面４Ａに冷却媒体を吹き付ける冷却手段を用いることが好ましい。 <Cooling means>
As a cooling means in the heating means and / or the cooling means 3, a path such as a conduit is provided on the surface of the fixed shaft 2, and a cooling means for supplying a cooling medium to this path and / or a nozzle etc. It is possible to use a cooling means or the like which has a blowout port and sprays a cooling medium on the inner surface 4A of the rotary ring 4 from this blowout port, but from the viewpoint of responsiveness, cooling efficiency, etc. It is preferable to use a cooling means for blowing a cooling medium.
＜固定軸および回転環の構造＞
　固定軸２および回転環４の材質としては、特に限定されないが、物性・特性、価格等の観点から、好適にはステンレスを用いることができる。 <Structure of fixed shaft and rotating ring>
The material of the fixed shaft 2 and the rotary ring 4 is not particularly limited, but stainless steel can be preferably used from the viewpoint of physical properties, characteristics, cost and the like.
　固定軸２は、必要とされる強度が確保できる範囲において中空とすることで軽量化を図ることができる。 The weight of the fixed shaft 2 can be reduced by making the fixed shaft 2 hollow as long as the required strength can be secured.
　回転環４は、物性・特性、価格、軽量化等の観点から、一般的にはステンレス製の中空円筒とするのが好ましい。回転駆動される回転環４をより軽量化するには、炭素繊維強化プラスチック（ＣＦＲＰ）製の内層、ステンレス製の外層から形成された積層中空円筒とするのが好ましく、炭素繊維強化プラスチック（ＣＦＲＰ）製の中空円筒とするのがより好ましい。 Generally, the rotary ring 4 is preferably a hollow cylinder made of stainless steel from the viewpoints of physical properties, properties, cost, weight reduction and the like. In order to reduce the weight of the rotationally driven rotary ring 4, it is preferable to use a laminated hollow cylinder formed of an inner layer made of carbon fiber reinforced plastic (CFRP) and an outer layer made of stainless steel, and carbon fiber reinforced plastic (CFRP) More preferably, the hollow cylinder is made of
　回転環４の表面には、傷つき防止のために金属メッキを施すことが好ましい。金属メッキの種類としては、例えばクロムメッキ、ニッケルメッキ、亜鉛メッキなどが好適に用いられ、単独でまたは２種以上の多層の組み合わせで使用することができるが、特に表面平滑化の容易さやその耐久性の点から最表面がクロムメッキされ、表面粗さが３Ｓ以下、特に０．５Ｓ以下であることが好ましい。 It is preferable to metal-plate the surface of the rotary ring 4 in order to prevent damage. As the type of metal plating, for example, chromium plating, nickel plating, zinc plating, etc. are suitably used, and it can be used alone or in combination of two or more types of layers, but in particular the ease of surface smoothing and its durability From the viewpoint of the properties, the outermost surface is preferably plated with chromium, and the surface roughness is preferably 3S or less, particularly 0.5S or less.
　回転環４を固定軸２に対して回転可能に取り付ける方法としては、公知の一般的な方法を採用することができるが、図１に示すようにボールベアリング６等の各種ベアリング類を介して取り付けることができる。 As a method of rotatably attaching the rotary ring 4 to the fixed shaft 2, a known general method can be adopted, but as shown in FIG. 1, it is attached through various bearings such as a ball bearing 6 or the like. be able to.
　回転環４を回転駆動する方法としては、公知の一般的な方法を採用することができる。例えば、回転環４の端部に各種ギア類を設け、電動モーターにより回転駆動することができる。特に、本発明のキャスティングドラム装置では、固定軸２に回転環４を回転可能に取り付けることにより回転部分を軽量化できることから、回転環４を斑なく回転できるノンバッククラッシュギアを用いることができる。さらに、回転部分の軽量化によりスリップを低減できることから、ベルトにより回転環４を駆動することも可能である。 A publicly known general method can be adopted as a method of rotationally driving the rotary ring 4. For example, various gears can be provided at the end of the rotary ring 4 and can be rotationally driven by an electric motor. In particular, in the casting drum device of the present invention, since the weight of the rotating portion can be reduced by rotatably attaching the rotary ring 4 to the fixed shaft 2, a non-backcrash gear capable of rotating the rotary ring 4 without spots can be used. Furthermore, since the weight can be reduced to reduce the slippage, it is also possible to drive the rotary ring 4 with a belt.
＜冷却装置＞
　本発明のキャスティングドラム装置は、回転環４の周囲に、回転環４の表面に向けてエアー、ミスト等の冷却媒体を供給する冷却装置８を備えることが好ましい。冷却装置８を用いる補助的な冷却により、液状合成樹脂７および／または合成樹脂フィルム・シート５の温度をより適切に設定・制御することができる。 <Cooling device>
The casting drum device of the present invention preferably comprises a cooling device 8 for supplying a cooling medium such as air or mist toward the surface of the rotary ring 4 around the rotary ring 4. The temperature of the liquid synthetic resin 7 and / or the synthetic resin film / sheet 5 can be set and controlled more appropriately by the auxiliary cooling using the cooling device 8.
　本発明のキャスティングドラム装置では、回転環４の表面に配置された冷却手段および／または回転環４の周囲に備えられた冷却装置８によって、特に、回転環４から剥離する際の合成樹脂フィルム・シート５の温度を適切に設定・制御することができ、合成樹脂フィルム・シート５の剥離性を向上することができる。 In the casting drum device according to the present invention, the cooling means disposed on the surface of the rotary ring 4 and / or the cooling device 8 provided around the rotary ring 4, in particular, the synthetic resin film when peeling off the rotary ring 4. The temperature of the sheet 5 can be appropriately set and controlled, and the releasability of the synthetic resin film / sheet 5 can be improved.
＜合成樹脂フィルム・シートの製造方法＞
　本発明のキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法は、上記のようなキャスティングドラム装置を用いて、合成樹脂フィルム・シート５を製造することにより、キャスティングドラムを大型化した場合でも、経済的・効率的に回転駆動することができ、また、回転部分の支持間隔を短くすることができるため、キャスティングドラムの自重による撓みを小さく抑えることができ、膜厚の均一な合成樹脂フィルム・シート５を容易に製造することができる。さらに、ａ）加熱手段および／または冷却手段３が配置される固定軸２の形状および／またはｂ）固定軸２の表面における加熱手段および／または冷却手段３の配置を調整することにより、回転環４の回転方向（合成樹脂フィルム・シート５の長手方向）および回転環４の中心軸９と平行方向（合成樹脂フィルム・シート５の幅方向）における回転環４の表面温度を、自由自在に設定・制御することが可能となり、合成樹脂フィルム・シート５の材料樹脂、合成樹脂フィルム・シート５に求められる物性・特性等に応じて、キャスティングドラム表面温度を自由自在に設定・制御することができる。 <Production method of synthetic resin film / sheet>
The method for producing a synthetic resin film / sheet using the casting drum device according to the present invention can produce a synthetic resin film / sheet 5 using the above-mentioned casting drum device, even when the casting drum is upsized. Since the rotation distance can be driven economically and efficiently, and the supporting distance of the rotating part can be shortened, the deflection of the casting drum due to its own weight can be reduced, and the synthetic resin film having a uniform thickness can be obtained. The sheet 5 can be easily manufactured. Furthermore, by adjusting the arrangement of the heating means and / or the cooling means 3 on the surface of the fixed shaft 2 and / or the shape of the fixed shaft 2 on which a) the heating means and / or the cooling means 3 are arranged The surface temperature of the rotary ring 4 in the direction of rotation of 4 (longitudinal direction of the synthetic resin film / sheet 5) and in the direction parallel to the central axis 9 of the rotary ring 4 (width direction of the synthetic resin film / sheet 5) -It becomes possible to control, and the surface temperature of the casting drum can be freely set and controlled according to the physical properties and characteristics required for the resin of the synthetic resin film and sheet 5, and the synthetic resin film and sheet 5, etc. .
＜まとめ＞
　以上に説明したように、本発明のキャスティングドラム装置は、固定軸と、固定軸に回転可能に取り付けられた中空円筒形の回転環とを備えるように構成したことにより、回転部分を軽量化することができ、キャスティングドラムを大型化した場合でも、経済的・効率的に回転駆動することができる。さらに、回転部分を軽量化することができ、また、回転部分の支持間隔を短くすることができ、また、断面剛性を高めることができるため、キャスティングドラムの自重による撓みを小さく抑えることができ、合成樹脂フィルム・シートの膜厚を均一に保つことができる。さらに、ａ）加熱手段および／または冷却手段が配置される固定軸の形状および／またはｂ）固定軸の表面における加熱手段および／または冷却手段の配置を調整することにより、回転環の回転方向（合成樹脂フィルム・シート５の長手方向）および回転環の中心軸と平行方向（合成樹脂フィルム・シート５の幅方向）における回転環の表面温度を、自由自在に設定・制御することが可能となり、合成樹脂フィルム・シートの材料樹脂、合成樹脂フィルム・シートに求められる物性・特性等に応じて、キャスティングドラム表面温度を自由自在に設定・制御することができる。 <Summary>
As described above, the casting drum device according to the present invention is configured to include the fixed shaft and the hollow cylindrical rotating ring rotatably attached to the fixed shaft, thereby reducing the weight of the rotating portion Even when the casting drum is enlarged, it can be rotationally driven economically and efficiently. Furthermore, the weight of the rotating portion can be reduced, the supporting distance of the rotating portion can be shortened, and the rigidity of the cross section can be increased, so that the bending of the casting drum due to its own weight can be reduced. The film thickness of the synthetic resin film / sheet can be kept uniform. Furthermore, the direction of rotation of the rotating ring by adjusting the arrangement of the heating and / or cooling means on the surface of the fixed shaft and / or the shape of the fixed shaft on which a) the heating and / or cooling means are arranged It becomes possible to freely set and control the surface temperature of the rotating ring in the direction parallel to the longitudinal axis of the synthetic resin film / sheet 5 and the central axis of the rotating ring (the width direction of the synthetic resin film / sheet 5) The surface temperature of the casting drum can be freely set and controlled according to the physical properties and characteristics required of the synthetic resin film / sheet material resin and the synthetic resin film / sheet.
　また、本発明のキャスティングドラム装置を用いた合成樹脂フィルム・シートの製造方法は、上記のようなキャスティングドラム装置を用いて、合成樹脂フィルム・シートを製造することにより、キャスティングドラムを大型化した場合でも、経済的・効率的に合成樹脂フィルム・シートを製造することができる。さらに、膜厚の均一な合成樹脂フィルム・シートを容易に製造することができ、求められる物性・特性等を有する合成樹脂フィルム・シートを容易に製造することができる。 In the method of producing a synthetic resin film or sheet using the casting drum device according to the present invention, the casting drum is enlarged by producing a synthetic resin film or sheet using the casting drum device as described above. However, synthetic resin films and sheets can be produced economically and efficiently. Furthermore, a synthetic resin film / sheet having a uniform film thickness can be easily produced, and a synthetic resin film / sheet having the required physical properties and characteristics can be easily produced.
　１　　　　　キャスティングドラム装置
　２　　　　　固定軸
　３　　　　　加熱手段および／または冷却手段
　３Ａ　　　　加熱手段および／または冷却手段の回転環側の表面
　４　　　　　回転環
　４Ａ　　　　回転環の内側表面
　５　　　　　合成樹脂フィルム・シート
　６　　　　　ボールベアリング
　７　　　　　合成樹脂を溶媒に溶解させた溶液または溶融させた合成樹脂（液状合成樹脂）
　８　　　　　冷却装置
　９　　　　　回転環の中心軸
　２０　　　　キャスティングドラム
　２１　　　　外筒
　２２　　　　内筒
　２３　　　　外筒と内筒間の空隙
　２４　　　　らせん溝隔壁
　２５　　　　一方の軸
　２６　　　　他方の軸
　２７　　　　液状熱媒分岐管 Reference Signs List 1 casting drum device 2 fixed shaft 3 heating means and / or cooling means 3A rotating ring side surface of heating means and / or cooling means 4 rotating ring 4A inner surface of rotating ring 5 synthetic resin film / sheet 6 ball bearing 7 synthetic resin Solution dissolved in solvent or molten synthetic resin (liquid synthetic resin)
DESCRIPTION OF SYMBOLS 8 Cooling device 9 Central shaft of rotating ring 20 Casting drum 21 Outer cylinder 22 Inner cylinder 23 Air gap between outer cylinder and inner cylinder 24 Spiral groove partition 25 One shaft 26 The other shaft 27 Liquid heat medium branch pipe

Claims (12)

  1. 　合成樹脂フィルム・シートを成形する際に用いられるキャスティングドラム装置であって、
    　固定軸と、
    　前記固定軸の表面に配置された加熱手段および／または冷却手段と、
    　前記加熱手段および／または冷却手段を覆うように、前記固定軸に対して回転可能に設けられた中空円筒形の回転環とを備え、
    　前記加熱手段および／または冷却手段により、前記回転環を加熱および／または冷却することを特徴とする、キャスティングドラム装置。     A casting drum apparatus used in forming a synthetic resin film / sheet, comprising:
    With a fixed axis,
    Heating means and / or cooling means disposed on the surface of the fixed shaft;
    A hollow cylindrical rotary ring rotatably provided relative to the fixed shaft so as to cover the heating means and / or the cooling means;
    A casting drum apparatus characterized in that the rotating ring is heated and / or cooled by the heating means and / or the cooling means.
  2. 　前記加熱手段および／または冷却手段が、前記合成樹脂フィルム・シートの材料樹脂、前記合成樹脂フィルム・シートに求められる物性・特性等に応じて、前記固定軸の表面に配置されることを特徴とする、請求項１に記載のキャスティングドラム装置。 The heating means and / or the cooling means are disposed on the surface of the fixed shaft according to the material resin of the synthetic resin film / sheet, the physical properties / characteristics required for the synthetic resin film / sheet, etc. The casting drum device according to claim 1.
  3. 　前記加熱手段および／または冷却手段が、回転環の中心軸と直交する断面において、前記加熱手段および／または冷却手段の前記回転環側の表面が、前記回転環の内側表面と略平行となるように配置されることを特徴とする、請求項１または２に記載のキャスティングドラム装置。 The surface of the heating means and / or the cooling means on the rotation ring side is substantially parallel to the inner surface of the rotation ring in a cross section where the heating means and / or the cooling means are orthogonal to the central axis of the rotation ring The casting drum device according to claim 1 or 2, characterized in that it is arranged in
  4. 　前記加熱手段および／または冷却手段が、前記回転環の中心軸と略平行となるように、前記固定軸の表面に配置されることを特徴とする、請求項１～３のいずれかに記載のキャスティングドラム装置。 The heating means and / or the cooling means are disposed on the surface of the fixed shaft so as to be substantially parallel to the central axis of the rotary ring. Casting drum device.
  5. 　前記加熱手段および／または冷却手段が、複数の帯状の加熱手段および／または冷却手段であることを特徴とする、請求項１～４のいずれかに記載のキャスティングドラム装置。 The casting drum device according to any one of claims 1 to 4, wherein the heating means and / or the cooling means are a plurality of strip-like heating means and / or cooling means.
  6. 　前記加熱手段が誘導コイルであり、この誘導コイルに交流電流を流して強度の変化する磁力線を発生させることにより、前記回転環を加熱することを特徴とする、請求項１～５のいずれかに記載のキャスティングドラム装置。 The heating method according to any one of claims 1 to 5, characterized in that the heating means is an induction coil, and an alternating current is supplied to the induction coil to generate magnetic lines of varying strength, thereby heating the rotating ring. Casting drum apparatus as described.
  7. 　前記加熱手段が赤外線ヒーターであり、この赤外線ヒーターに電流を流して赤外線を発生させることにより、前記回転環を加熱することを特徴とする、請求項１～５のいずれかに記載のキャスティングドラム装置。 The casting drum device according to any one of claims 1 to 5, characterized in that the heating means is an infrared heater, and current is supplied to the infrared heater to generate infrared rays, thereby heating the rotary ring. .
  8. 　前記冷却手段が、経路に冷却媒体を供給する冷却手段および／または前記回転環の内側表面に冷却媒体を吹き付ける冷却手段であることを特徴とする、請求項１～７のいずれかに記載のキャスティングドラム装置。 The casting according to any one of claims 1 to 7, wherein the cooling means is a cooling means for supplying a cooling medium to a passage and / or a cooling means for blowing a cooling medium on the inner surface of the rotary ring. Drum device.
  9. 　前記回転環が、ステンレス製の中空円筒であることを特徴とする、請求項１～８のいずれかに記載のキャスティングドラム装置。 The casting drum device according to any one of claims 1 to 8, wherein the rotary ring is a stainless steel hollow cylinder.
  10. 　前記回転環が、炭素繊維強化プラスチック（ＣＦＲＰ）の内層、ステンレス製の外層から形成された積層中空円筒、または炭素繊維強化プラスチック（ＣＦＲＰ）製の中空円筒であることを特徴とする、請求項１～８のいずれかに記載のキャスティングドラム装置。 The rotary ring is characterized in that it is an inner layer of carbon fiber reinforced plastic (CFRP), a laminated hollow cylinder formed from an outer layer made of stainless steel, or a hollow cylinder made of carbon fiber reinforced plastic (CFRP). The casting drum device according to any one of to 8.
  11. 　前記回転環の周囲に、前記回転環の表面に向けて冷却媒体を吹き付ける冷却装置を備えることを特徴とする、請求項１～１０のいずれかに記載のキャスティングドラム装置。 The casting drum device according to any one of claims 1 to 10, further comprising a cooling device for blowing a cooling medium toward the surface of the rotary ring around the rotary ring.
  12. 　前記請求項１～１１のいずれかに記載のキャスティングドラム装置を用いることにより、合成樹脂を溶媒に溶解させた溶液または溶融させた合成樹脂から、合成樹脂フィルム・シートを成形することを特徴とする、合成樹脂シート・フィルムの製造方法。
          A synthetic resin film / sheet is formed from a solution in which a synthetic resin is dissolved in a solvent or a molten synthetic resin by using the casting drum device according to any one of claims 1 to 11. , Synthetic resin sheet film production method.
PCT/JP2018/046160 2017-12-15 2018-12-14 Casting drum device and method for manufacturing synthetic resin film/sheet using said casting drum device WO2019117300A1 (en)

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