JP4546433B2 - Film manufacturing apparatus and film manufacturing method - Google Patents

Description

  The present invention relates to a film manufacturing apparatus and a film manufacturing method.

  Conventionally, in a film production apparatus for producing a film, a resin extruded from a die of an extrusion molding machine (hereinafter referred to as “extruded resin”) is formed into a thin film (including a sheet), and thereafter. The film is cut into a predetermined length by a cutting machine or wound into a reel by a winding device.

For this purpose, the film manufacturing apparatus comprises a plurality of metal rolls, sandwiched between two rolls of extruded resin extruded from the die, sandwiched between the surfaces of each roll, and cooled to form a thin film. Form the film. In this case, one of the two rolls is a main roll and the other is a sub roll, and a transfer mold is formed on the surface of the main roll. That is, the extruded resin is wound around the main roll and traveled, and is sandwiched between the main roll and the sub roll to form a film, and the transfer mold is transferred. Subsequently, the film is peeled off from the main roll and sent to the next step (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 3-124425

  However, in the conventional film manufacturing apparatus, when the film is used for optics, the film has little distortion and cannot form an optically good transfer surface.

  In other words, the transfer mold includes a flat transfer mold having no unevenness on the surface and a design transfer mold having a fine pattern formed on the surface. On the film on which the transfer surface is formed and the design transfer mold is transferred, a transfer surface composed of fine irregularities is formed.

  However, in any film, when the film is peeled off from the main roll, if the temperature of the resin constituting the film is equal to or higher than the glass transition point Tg, the shape of the transfer mold can be sufficiently retained on the transfer surface. This is not possible and the film quality deteriorates.

  Further, when the extruded resin is sandwiched between the main roll and the secondary roll, if the temperature of the resin is lower than the glass transition point Tg, the extruded resin is solidified, so that the extruded resin cannot be sufficiently adhered to the transfer mold. Therefore, the transfer mold cannot be sufficiently transferred, and the quality of the film is deteriorated.

  An object of the present invention is to provide a film manufacturing apparatus and a film manufacturing method capable of solving the problems of the conventional film manufacturing apparatus and improving the quality of the film.

  For this purpose, in the film manufacturing apparatus of the present invention, a first roll, a second roll disposed at a predetermined distance from the first roll, and the first and second rolls. A belt that is stretched and made of a material having high thermal conductivity and has a transfer mold formed on the surface thereof, is disposed to face the first roll via the belt, and is disposed between the belt and the belt. A pressing roll forming a transfer portion, a peeling roll disposed to face the second roll via the belt, and the transfer portion upstream of the transfer portion in the running direction of the belt. And a heating device that is disposed to face the first roll through the belt and heats the belt.

  According to the present invention, in the film manufacturing apparatus, the first roll, the second roll disposed at a predetermined distance from the first roll, and the first and second rolls. A belt that is stretched and made of a material having high thermal conductivity and has a transfer mold formed on the surface thereof, is disposed to face the first roll via the belt, and is disposed between the belt and the belt. A pressing roll forming a transfer portion, a peeling roll disposed to face the second roll via the belt, and the transfer portion upstream of the transfer portion in the running direction of the belt. And a heating device that is disposed to face the first roll through the belt and heats the belt.

  In this case, a heating device is provided on the upstream side of the transfer portion in the running direction of the belt and adjacent to the transfer portion, and a heating device for heating the belt is provided, so that the temperature of the surface before the belt reaches the transfer portion. Can be maintained at a high temperature not lower than the glass transition point. Therefore, since the extruded resin does not solidify in the transfer portion, the extruded resin can be sufficiently adhered to the transfer mold. As a result, the transfer mold can be sufficiently transferred, and the quality of the film can be improved.

  In addition, since the film and the belt are placed in contact with each other until the film is separated from the second roll after being separated from the transfer portion, the shape of the transfer mold should be sufficiently retained on the transfer surface of the film. Can do.

  Therefore, when the film is peeled from the belt, the quality of the transfer surface can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a conceptual diagram of a film manufacturing system according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a main part of a rubber roll according to the first embodiment of the present invention.

  In the figure, reference numeral 11 denotes a die, which is disposed in an extrusion molding machine (not shown) and extrudes a long extruded resin 12. In the extrusion direction of the die 11, in this embodiment, a film manufacturing apparatus 13 is disposed below, and the extruded resin 12 is processed in the film manufacturing apparatus 13 to become a film f, which is sent to the next step. .

  The film manufacturing apparatus 13 includes a belt unit 14, a pressing roll 15, a peeling roll 16 and the like. The belt unit 14 includes a rubber roll 21 as a first roll, and the rubber roll. A cooling roll 22 as a second roll disposed at a predetermined distance from the belt 21, a belt 23 stretched between the rubber roll 21 and the cooling roll 22, and when the belt 23 meanders, A correction roll 24 or the like for correcting meandering is provided. The rubber roll 21 and the rolls 15 and 16 are connected to a motor as a driving unit (not shown), and the rotation generated by driving the motor is transmitted and rotated. The belt 23 is caused to travel at a predetermined traveling speed as the rubber roll 21 rotates, and the cooling roll 22 is driven and rotated as the belt 23 travels.

  The rubber roll 21 has a thickness capable of elastic deformation, and has a diameter of 200 [mm] or more and 600 [mm] or less, and has a high thermal conductivity. In the present embodiment, the rubber roll 21 is a metal. And a closing member 32 that closes both ends of the cylindrical body 31, and the closing member 32 is disposed at both ends of the cylindrical body 31 and has a circular flange portion 34. The flange portion 34 extends in the axial direction from the center of the flange portion 34 into the closing member 32, the inner shaft portion 35 connecting the flange portions 34 at both ends, and the flange portion 34 extends in the axial direction outward from the center. An outer shaft portion 36 is provided. The outer shaft portion 36 functions as a rotation shaft, and a gear (not shown) for receiving rotation from the motor is attached to a predetermined portion.

  The closing member 32 is formed with a cooling medium flow path 37 that extends through the outer shaft portion 36 and the flange portion 34 and extends to a predetermined position in the inner shaft portion 35. One end of the path 37 is opened at the end surface of the outer shaft portion 36, and the other end of the cooling medium flow path 37 is opened at a plurality of locations on the outer peripheral surface of the inner shaft portion 35, in this embodiment, two locations. . Then, a cooling medium such as water sent from a cooling medium supply device (not shown) is supplied to the cooling medium flow path 37 as indicated by an arrow on one end side of the rubber roll 21, and the inside of the cylindrical body 31 and the closing member After the cylindrical body 31 is supplied to the cylindrical medium storage chamber 41 formed in the chamber 32 and cooled to a temperature not higher than the glass transition point Tg + 50 [° C.], the cooling medium flow path is formed on the other end side of the rubber roll 21. It is discharged through 37 and returned to the cooling medium supply device. An annular groove is formed on the outer peripheral surface of the flange portion 34, and an O-ring 43 as a seal member is disposed in the groove to seal the inside of the medium storage chamber 41.

  The cooling medium supply device includes a temperature adjusting device for setting the temperature of the cooling medium to a constant value, a pump for supplying the cooling medium, and the like.

  The cooling roll 22 is made of a material having high thermal conductivity, in the present embodiment, a rigid material such as metal, and has a cylindrical shape having a cylindrical shape, and is disposed at both ends of the cylindrical body. A closing member (not shown) having a circular shape. A cooling medium flow path and a medium accommodation chamber (not shown) are also formed in the cooling roll 22, and a cooling medium is supplied from the cooling medium supply device to the medium accommodation chamber via the cooling medium flow path. [° C.] Cooling to a temperature not lower than the glass transition point Tg.

  The rotation axis of the cooling roll 22 is arranged in parallel with the rotation axis of the rubber roll 21 and is movable in the radial direction. The rubber roll is moved by an actuator (not shown), a spring or the like as an urging member. It is urged in a direction away from the rotation axis of 21. Therefore, a predetermined tension can be generated on the belt 23.

  In addition, the belt 23 is formed of a material having a high thermal conductivity, a transfer belt formed on the outer peripheral surface, and a seamless belt made of metal in the present embodiment, and has a thickness of 0.2 mm or more. And 1.0 [mm] or less. In the present embodiment, the transfer mold is a flat transfer mold without unevenness, and the surface is mirror-finished and smoothed.

  When the motor is driven, the rubber roll 21 is rotated in the direction of arrow A at a predetermined peripheral speed. Similarly, the roll 15 is rotated in the direction of arrow B at the peripheral speed, and the belt 23 is rotated at arrow C in the peripheral speed. The cooling roll 22 is driven at the peripheral speed and rotated in the arrow D direction.

  Further, the roll 15 is made of a highly heat-conductive material that can be elastically deformed, in the present embodiment, a not-shown cylindrical body made of metal, and a not-shown closing member that closes both ends of the cylindrical body. Prepare. If necessary, a cooling medium flow path and a medium accommodation chamber can also be formed in the roll 15, and the cooling medium is supplied from the cooling medium supply device to the medium accommodation chamber via the cooling medium flow path. Can do. In that case, the roll 15 can be cooled to a temperature below the glass transition point Tg.

  The roll 15 is disposed to face the rubber roll 21 via the belt 23, and a transfer portion p <b> 1 is formed between the belt 23 and the roll 15. A heating device 45 is disposed in the vicinity of the transfer portion p1 upstream of the transfer portion p1 in the running direction of the belt 23, adjacent to the transfer portion p1 and opposed to the belt 23. 23 is heated. In the present embodiment, the heating device 45 includes an induction heating device, and when a high frequency current is generated in the heating device 45 to form a magnetic field, an eddy current is generated in the belt 23 in a direction that cancels the magnetic field. Joule heat is generated by the eddy current and the electric resistance of the metal constituting the belt 23.

  In this case, since the eddy current flows more in the portion closer to the surface due to the skin effect, only the surface of the belt 23 can be heated to a temperature higher than the glass transition point Tg and the heating of the rubber roll 21 can be suppressed. Can do.

  The operation of the film manufacturing system having the above configuration will be described.

  First, when the extruded resin 12 extruded from the die 11 enters the transfer portion p1, the roll 15 and the rubber roll 21 sandwich the extruded resin 12 from both sides to form a film f having a predetermined thickness and the surface of the belt 23. The transfer mold is transferred to the extruded resin 12. At this time, the belt 23 also enters the transfer portion p1, but since the surface of the belt 23 is heated by the heating device 45 and has a high temperature equal to or higher than the glass transition point Tg, the extruded resin 12 is heated to a high temperature equal to or higher than the glass transition point Tg. Can be.

  In the present embodiment, since the heating device 45 is disposed in the vicinity of the transfer portion p1, the temperature of the surface of the belt 23 does not decrease before the belt 23 reaches the transfer portion p1, and the glass transition point. It can be maintained at a high temperature of Tg or higher. Accordingly, since the extruded resin 12 does not solidify in the transfer portion p1, the extruded resin 12 can be sufficiently adhered to the transfer mold. As a result, the transfer mold can be sufficiently transferred, so that the quality of the transfer surface of the film f can be improved. Moreover, since the energy required for heating the belt 23 in the heating device 45 can be reduced, the cost of the film manufacturing apparatus 13 can be reduced.

In the vicinity of the transfer part p1, a temperature sensor 46 as a temperature detection part is disposed in order to detect the temperature of the belt 23. Then, a temperature adjustment processing means (temperature adjustment processing unit) of a control unit (not shown) performs a temperature adjustment process, reads the sensor output of the temperature sensor 46, detects the temperature of the belt 23, the amount of heating by the heating device 45, In the present embodiment, the high-frequency current generated by the heating device 45 can be controlled to set the temperature of the belt 23 to the target temperature. In the present embodiment, when the target temperature is Ts, the target temperature Ts is
Tg-50 [° C.] ≦ Ts ≦ Tg + 50 [° C.]
To be.

  Subsequently, when the film f is discharged from the transfer portion p <b> 1, the film 23 is wound along the outer peripheral surface of the rubber roll 21, wound around the rubber roll 21, and conveyed with the belt 23, and then the belt 23 is removed from the rubber roll 21. The separation part p2 leaves the rubber roll 21 and is conveyed toward the cooling roll 22 together with the belt 23. The belt 23 joins the cooling roll 22 at the joining part p3 where the cooling roll 22 joins, and the outer circumferential surface of the cooling roll 22 Along and around the cooling roll 22 and further conveyed along with the belt 23. The film f is separated from the belt 23 while being separated from the cooling roll 22 at the separation portion p4 where the belt 23 is separated from the cooling roll 22. The separation part p4 constitutes a peeling part.

  For this purpose, the roll 16 is disposed in the separation part p4 so as to be opposed to the cooling roll 22 through the belt 23 so as to be rotatable in the direction of arrow E. Therefore, the film f peeled off from the belt 23 is transported along the roll 16 and wound around the roll 16, and then separated from the roll 16 by the separation unit p5 and sent to the next step.

By the way, since the rubber roll 21 and the cooling roll 22 are cooled by the cooling medium as described above, the film f is wound around the rubber roll 21 together with the belt 23 and conveyed, and the cooling roll 22. It is cooled while being wound around and transported to a temperature lower than the glass transition point Tg Tg-100 [° C.] ≦ Tc ≦ Tg
become.

  In this case, induction heating is performed by the heating device 45 and only the surface of the belt 23 is heated as described above, so that the rubber roll 21 is hardly heated. Therefore, as soon as the film f is separated from the transfer portion p1 together with the belt 23, cooling by the rubber roll 21 is started, so that the temperature of the film f becomes sufficiently low until the separation portion p4 is reached. The temperature can be lower than the glass transition point Tg.

  In addition, since the film f and the belt 23 are placed in contact with each other until they reach the separation part p4 after being separated from the transfer part p1, the shape of the transfer mold is sufficiently maintained on the transfer surface of the film f. can do.

  Therefore, the quality of the transfer surface can be improved when the film f is peeled from the belt 23 at the separation part p4.

  The rubber roll 21 and the cooling roll 22 are arranged in parallel to each other, but the parallelism is not sufficiently high, or external force is applied to the rubber roll 21, the cooling roll 22, the belt 23, etc. Or the like, the belt 23 may meander. Therefore, a meandering sensor 47 serving as a meandering detection unit that detects meandering of the belt 23 is disposed downstream of the cooling roll 22 and upstream of the rubber roll 21 in the running direction of the belt 23. The meandering sensor 47 includes a light emitting portion disposed on one of the outer peripheral surface side and the inner peripheral surface side of the belt 23 and a light receiving portion disposed on the other of the outer peripheral surface side and the inner peripheral surface side. Then, a portion of the strip-shaped light emitted from the light emitting unit that is not blocked by the belt 23 is received by the light receiving unit, and the meandering of the belt 23 is detected according to the received light.

  Further, the correction roll 24 is disposed on the downstream side of the meandering sensor 47 in the traveling direction of the belt 23 and on the upstream side of the rubber roll 21. The straightening roll 24 is rotated in the direction of arrow F, one end of the rotating shaft is supported to be swingable with respect to the frame of the film manufacturing apparatus, and the other end of the rotating shaft is supported by the actuator 48 with respect to the running direction of the belt 23. Can be moved at right angles. The meandering correction processing means (meandering correction processing unit) of the control unit performs a meandering correction process. When the meandering of the belt 23 is detected by the meandering sensor 47, the actuator 48 is operated, and the other end of the correction roll 24 is moved. Move and tilt the correction roll 24. Therefore, the belt 23 moves in the axial direction of the correction roll 24 and is placed at a predetermined position. In this way, the meandering of the belt 23 can be corrected.

  In the present embodiment, the surface mold of the outer peripheral surface of the belt 23 is a flat transfer mold having no irregularities on the surface, but a design transfer mold having a fine pattern formed on the surface is formed on the outer peripheral surface of the belt 23. Can do. In that case, a transfer surface composed of fine irregularities is formed on the film to which the design transfer mold is transferred.

  The film to which the design transfer mold is transferred can be used as a light guide plate for guiding incident light to the screen using the fine pattern formed on the transfer surface as a light path, or by using various multilayer films. It can be used as a phase plate for adjusting the phase, or can be used as a brightness enhancement film for improving the light emission efficiency in the direction of the screen.

  Next, a second embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the same code | symbol is provided and the effect of the same embodiment is used about the effect of the invention by having the same structure.

  FIG. 3 is a conceptual diagram of a film manufacturing system according to the second embodiment of the present invention.

  In this case, in the extrusion direction of the die 11, in the present embodiment, a film manufacturing apparatus 53 is disposed below, and the extruded resin 12 is processed from both sides in the film manufacturing apparatus 53 to become a film f. Sent to.

  The film manufacturing apparatus 53 includes first and second belt units 54 and 55, a peeling roll 16 and the like. The first belt unit 54 includes a rubber roll 21 as a first roll, and the rubber roll. A cooling roll 22 as a second roll disposed at a predetermined distance from the belt 21, a belt 23 stretched between the rubber roll 21 and the cooling roll 22, and when the belt 23 meanders, A correction roll 24 or the like for correcting meandering is provided. The second belt unit 55 is a rubber roll 61 serving as a pressing roll and a first roll, and a second roll disposed at a predetermined distance from the rubber roll 61. A cooling roll 62, a belt 63 stretched between the rubber roll 61 and the cooling roll 62, a correction roll 64 for correcting the meandering when the belt 63 meanders.

  The rubber rolls 21 and 61 and the roll 16 are connected to a motor as a driving unit (not shown), and the rotation generated by driving the motor is transmitted and rotated. The belts 23 and 63 are caused to run at a predetermined running speed as the rubber rolls 21 and 61 are rotated, and the cooling rolls 22 and 62 are driven as the belts 23 and 63 are run. Can be rotated. The rubber roll 61 has the same structure as the rubber roll 21, and the cooling roll 62 has the same structure as the cooling roll 22. The belt 63 also has the same structure as the belt 23, and is formed of a material having high thermal conductivity, in which a transfer mold is formed on the outer peripheral surface, in this embodiment, a seamless belt made of metal. In this embodiment, the transfer mold is a flat transfer mold without unevenness, and the surface is mirror-finished and smoothed.

  When the motor is driven, the rubber rolls 21 and 61 are rotated in the directions of arrows A and G at a predetermined peripheral speed. Similarly, the belts 23 and 63 are caused to travel in the directions of arrows C and H at the peripheral speed and are cooled. The rolls 22 and 62 are driven at the peripheral speed and rotated in the directions of arrows D and I. Further, the correction rolls 24 and 64 are rotated in the directions of arrows F and J at the peripheral speed.

  The rubber roll 61 is disposed to face the rubber roll 21 via the belts 23 and 63, and a transfer portion p 1 is formed between the belts 23 and 63. Heating devices 45 and 75 are adjacent to the transfer portion p1 and opposed to the belts 23 and 63 in the vicinity of the transfer portion p1 upstream of the transfer portion p1 in the running direction of the belts 23 and 63. The belts 23 and 63 are heated. In the present embodiment, the heating devices 45 and 75 are induction heating devices.

  In the present embodiment, since the heating devices 45 and 75 are disposed in the vicinity of the transfer portion p1, the surface temperature of the belts 23 and 63 is lowered before the belts 23 and 63 reach the transfer portion p1. And can be maintained at a high temperature above the glass transition point Tg. Accordingly, since the extruded resin 12 does not solidify in the transfer portion p1, the extruded resin 12 can be sufficiently adhered to the transfer mold. As a result, the transfer mold can be sufficiently transferred on both surfaces of the extruded resin 12, so that the quality of the transfer surfaces on both surfaces of the film f can be improved. Further, since the energy required for heating the belts 23 and 63 in the heating devices 45 and 75 can be reduced, the cost of the film manufacturing device 53 can be reduced.

  The operation of the film manufacturing system having the above configuration will be described.

  First, when the extruded resin 12 extruded from the die 11 enters the transfer portion p1, the rubber rolls 21 and 61 sandwich the extruded resin 12 from both sides to form a film f having a predetermined thickness and the belts 23 and 63. The transfer mold on the surface is transferred to the extruded resin 12. At this time, the belt 23 also enters the transfer portion p1, but since the surfaces of the belts 23 and 63 are heated by the heating devices 45 and 75 and are at a high temperature equal to or higher than the glass transition point Tg, the extruded resin 12 is changed to the glass transition point. The temperature can be raised to Tg or higher.

  In the present embodiment, since the heating devices 45 and 75 are disposed in the vicinity of the transfer portion p1, the surface temperature of the belts 23 and 63 is lowered before the belts 23 and 63 reach the transfer portion p1. And can be maintained at a high temperature above the glass transition point Tg. Accordingly, since the extruded resin 12 does not solidify in the transfer portion p1, the extruded resin 12 can be sufficiently adhered to the transfer mold. As a result, the transfer mold can be sufficiently transferred, so that the quality of the transfer surface of the film f can be improved. Further, since the energy required for heating the belts 23 and 63 in the heating devices 45 and 75 can be reduced, the cost of the film manufacturing device 53 can be reduced.

  In order to detect the temperature of the belts 23 and 63 in the vicinity of the transfer part p1, temperature sensors 46 and 76 as temperature detecting parts are provided. Then, the temperature adjustment processing means of the control unit reads the sensor outputs of the temperature sensors 46 and 76, detects the temperatures of the belts 23 and 63, and the heating amount by the heating devices 45 and 75, in this embodiment, By controlling the high-frequency current generated by the heating devices 45 and 75, the temperature of the belts 23 and 63 can be set to the target temperature.

  Subsequently, when the film f is discharged from the transfer part p1, the film f is separated from the belt 63, wound around the rubber roll 21 along the outer peripheral surface of the rubber roll 21, and conveyed along with the belt 23. Is separated from the rubber roll 21 at the separation part p2 that is separated from the rubber roll 21, and is conveyed toward the cooling roll 22 together with the belt 23. The belt 23 joins the cooling roll 22 at the joining part p3 where the cooling roll 22 joins, and the cooling roll The belt 22 is further conveyed along with the belt 23 along the outer peripheral surface of the belt 22 and wound around the cooling roll 22. The film f is separated from the belt 23 while being separated from the cooling roll 22 at the separation portion p4 where the belt 23 is separated from the cooling roll 22.

  In the present embodiment, the surface type of the outer peripheral surface of the belts 23 and 63 is a flat transfer mold having no irregularities on the surface, but the design transfer mold having a fine pattern formed on the surface is used as the outer peripheral surface of the belts 23 and 63. Can be formed. In that case, the transfer surface which consists of fine unevenness | corrugation is formed in both surfaces of the film in which the design transfer type | mold was transferred.

  The present invention is not limited to the above embodiments, and various modifications can be made based on the gist of the present invention, and they are not excluded from the scope of the present invention.

It is a conceptual diagram of the film manufacturing system in the 1st Embodiment of this invention. It is sectional drawing which shows the principal part of the rubber roll in the 1st Embodiment of this invention. It is a conceptual diagram of the film manufacturing system in the 2nd Embodiment of this invention.

Explanation of symbols

13, 53 Film production apparatus 15, 16 Roll 21, 61 Rubber roll 22, 62 Cooling roll 23, 63 Belt 31 Cylindrical body 32 Closing member 41 Medium accommodating chamber 45, 75 Heating apparatus 54, 55 First and second belts unit

Claims (8)

(A) a first roll;
(B) a second roll disposed at a predetermined distance from the first roll;
(C) a belt stretched between the first and second rolls, made of a material having high thermal conductivity, and having a transfer mold formed on the surface;
(D) a pressing roll that is disposed to face the first roll through the belt and forms a transfer portion with the belt;
(E) a peeling roll disposed to face the second roll via the belt;
(F) on the upstream side of the transfer unit in the running direction of the belt, by adjacent said transfer unit, and the belt is facing the first roll through the disposed, the heating apparatus for heating the belt And a film manufacturing apparatus. The film manufacturing apparatus according to claim 1, wherein a correction roll that corrects the meandering of the belt is disposed upstream of the first roll in the running direction of the belt. The film manufacturing apparatus according to claim 1, wherein a correction roll that corrects the meandering of the belt is disposed upstream of the first heating device in a running direction of the belt. (A) The first roll includes a cylindrical body made of a material having high heat conductivity and a thickness capable of elastic deformation, and a closing member for closing both ends of the cylindrical body,
(B) The film manufacturing apparatus according to any one of claims 1 to 3, wherein a medium accommodating chamber for accommodating a cooling medium is formed in the cylindrical body and the closing member. (A) The second roll includes a cylindrical body made of a highly heat-conductive rigid material, and a closing member that closes both ends of the cylindrical body,
(B) The film manufacturing apparatus according to any one of claims 1 to 4, wherein a medium accommodating chamber for accommodating a cooling medium is formed in the cylindrical body and the closing member. Film production apparatus according to any one of claims 1-5 is the heating apparatus for heating the belt by induction heating. (A) The first and second belt units are constituted by the first roll, the second roll and the belt, respectively.
(B) The film manufacturing apparatus according to any one of claims 1 to 6, wherein a pressing roll is constituted by the first roll of the second belt unit. The first roll, the second roll disposed at a predetermined distance from the first roll, the first roll, the first roll, the second roll, and made of a material having high thermal conductivity, and A belt having a transfer mold formed on the surface, a pressing roll disposed opposite to the first roll via the belt, and forming a transfer portion between the belt and the belt In the film manufacturing method of the film manufacturing apparatus having a peeling roll disposed to face the second roll,
Wherein the upstream side of the transfer unit in the running direction of the belt, adjacent to the transfer unit, and the film manufacturing method characterized by heating the belt at a position facing the first roll through the belt.

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