TW201238740A - Method and apparatus for forming casting film and solution casting method - Google Patents

Abstract

In a casting film forming process, a dope discharging step, a casting step, a film heating step, a skin layer forming step, a film drying step, a film cooling step, a peeling step, and a support heating step are successively performed repeatedly. In the dope discharging step, a dope is discharged onto an endless belt. In the casting step, a casting film 61 is formed from the dope. In the film heating step, the casting film is heated such that its surface becomes smooth. In the skin layer forming step, a skin layer is formed on the surface of the casting film. In the film drying step, the casting film is further dried. In the film cooling step, the casting film is cooled until the casting film has a self-supporting property so as to be transported. In the peeling step, the casting film is peeled from the endless belt. In the support heating step, the endless belt subjected to the peeling step is heated.

Description

201238740 ~r i t ijxi* VI. Description of the Invention: [Technical Field] The present invention relates to a method and an apparatus for forming a cast film and a method for forming a solution film. [Prior Art] A polymer film (hereinafter referred to as a film) is widely used as an optical film because of its excellent light transmittance, flexibility, and light weight thinning. Among them, a cellulose ester film such as a cellulose halide is used in an optical film. The optical film is exemplified by a film for photo-sensing, and a protective film or a retardation film of a polarizing plate.

The protective film or retardation film of the polarizing plate is a constituent member of a liquid crystal display device which has been expanding in the market in recent years. The method of manufacturing the film as a film is a solution film forming method. The solution film forming method has a f flow, a film forming process, a film independent process, a stripping process, and a wet film 2 drying process. In the process of forming a cast film, the concentrated polymer dissolved in the solvent flows down, and a fluid composed of the concentrated liquid is formed on the body. In the Lai Lihua process, the agent evaporates from the cast film until it can be transported independently, that is, hardened for more than one ί process. In the stripping process, the cast film was peeled off from the support as a wet film. In the film drying process, the solvent is used as a film from the wet film. The Japanese Patent Publication No. 2〇〇6_3〇6〇59 discloses that the solvent is evaporated from the casting film in the following process.卩 cast film until the film can be independently transported to cool granulation, according to the method of Japanese Patent Publication No. 2006-306059, the time required to cast the film is shorter than the film drying process: I, therefore, can be avoided Due to insufficient drying of the cast film 4 201238740 '-χ-- 剥离 peeling failure (a peeling residual failure of a portion of the shattered film that caused the peeled cast film to be shredded to remain on the support). Since the gentleman's fruit can increase the speed of the support, it is possible to achieve the production efficiency of the ancient film as compared with the prior art. However, it is possible to use the method of Japanese Patent Laid-Open Publication No. 2-6-6(4). In order to improve the production efficiency of the film, the unevenness of the optical characteristics (in-plane retardation Re or thickness direction retardation Rth, etc.) caused by the uneven thickness of the obtained film is a problem. Become faceted Therefore, it is possible to increase the thickness of the optical axis and to reduce the thickness of the liquid crystal display device. Accordingly, it is an object of the present invention to provide a thickness unevenness as described above. The method and apparatus for drying a cast film which can be efficiently produced by the method of forming a film and the film forming method of the present invention. The method for forming a cast film of the present invention is to form a cast film in a moving branch body. Green. The above-mentioned hybrid support moves in a manner of repeatedly passing through the arrival position of the flowing Chinese liquid and the position of the casting lion. The foregoing casting method has a concentrated liquid flow down step (A step) and a film drying step ( Step B), film cooling step (c step), stripping step (7) step), support heating step (E step), film heating step, (F step) and holding step (G step). In the step, the dope is made Flowing down the surface of the moving branch body, the dope comprises a polymer and a solvent, and the solvent is evaporated from the (7) L film formed on the surface of the shaft support. In the step of step c, the casting film is cooled to a state in which the casting film is cooled. The cooling is performed after the step B. The moving support of the D + transfer is peeled off before the step C. In the foregoing, the step of heating the support is performed before the next step B. In the step F, the heat is applied to the aforementioned B 臈 G step by using the heat of the moving support body. The support member blood flow is held by the moving branch body. The aforementioned holding is in the above-mentioned step = the two ends of the surface are read by the reading member to cut the surface of the moving support. The foregoing = description of the moving support (4) The continuation support member is formed by the support member being pressed and the inner support mark is formed by the film. The casting film is formed by casting the moving support body in the moving support body to reversely pass. Ways to describe. The step i) of peeling the position of the tape and the peeling position of the cast film, and the forming of the film lilted have the steps of the thick lining (the step of the step u, the step of the second step, the step of the step (the step J), the stripping step, the τ 克The body heat step (L step) and the film heating step before the step t' causes the dope to flow down to the moving support. The compound and the solvent. In the first step, the flow formed on the second and the second of the film is removed. The film is evaporated by the film, and the fluid is formed by the casting process described above. In the J step, the casting film is cooled and the state can be independently transferred. The cooling is after the aforementioned I step 6 201238740 In the κ step, the aforementioned cast film is peeled off from the moving support. In the L step, the width of the moving read body after the K step is lower than the above-mentioned L. The solution film forming method of the present invention for transferring the front tooth before the above-mentioned film drying step is a film forming method for producing a film by moving the film to dry. Repeatedly moving under the fluence (four) said the movement Movement of the peeling position of the support film. The solution film stretching step (A step), the film drying step (B step), the second liquid flow step, the peeling step (D step), the support step, and the step (C film heating (F step), holding step (G step j (E step), ,). In the human step, the dope is moved to the above-mentioned moving step. The dope contains the polymer and the solvent. The surface described above describes the above-described casting on the surface of the moving support. The solvent is formed from the concentrated liquid formed in the front casting film. The solvent is cooled to a state in which it can be read by itself. In the step D, from the foregoing movement = the above-mentioned cast film after the step B. In the E step, the body is peeled off from the aforementioned C step to heat the aforementioned movement after the aforementioned D step: before the aforementioned B step, in the aforementioned E step In the step of shifting, the casting film before the step B is used. The heat of the second heat is 'heated before the lower portion supporting member and the inner supporting member are held', and the both ends of the surface are held in the aforementioned A step. Surface body The 挟 挟 卩 卩 卩 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 2012 The film is obtained by evaporating the solvent from the casting film which is peeled off from the moving support. The film forming method of the present invention is a method of forming a cast film on a moving support and manufacturing a film in a dry county. The moving support body moves in a manner of repeatedly passing through the reaching position of the flowing concentrated liquid and peeling off the peeling position of the casting film. The solution forming method includes a dope flow down step (H step) and a film drying step ( 1 step), film cooling step (j step), stripping step (K step), support heating step (L step), film heating step (Μ step), and film dry mixing (ρ step) βΗ step ^ The sputum concentrate flows down to the aforementioned moving support. The dope contains a polymer and/or a mixture. In the first step, the pre-evaporation pre-equivalent agent is formed from the aforementioned surface formed on the surface of the aforementioned movable support. In the preceding step, the cast film is cooled to a state in which it can be independently transferred. The aforementioned cooling is carried out after the aforementioned steps. In the κ step, the cast film after the above J step is peeled off from the moving support. [In the step, the central portion in the width direction of the moving branch body after the kappa step is heated before the next step. The step towel is utilised by the above-mentioned L step to give the money (four) branch mis-heating under the "drying" step. In the step P, the solvent is evaporated from the cast film which is peeled off from the above-mentioned (four) support to obtain a film. The casting film forming apparatus of the present invention comprises a moving support body, a reaching portion supporting unit, a secret part supporting unit, a film cooling unit, and a body heating unit 8 201238740 == cycle;: = brain member and inner support member. And solvents. The aforementioned casting is skillful. The dope comprises a polymerization of the film drying section to cause the solvent, the sputum, and the ι. 1_____ to be treated from the above description. The peeling portion is formed in the film drying portion of the peeling portion of the reaching portion, and the peeling film is separated from the peeling, and the cast film is cooled, and the cast film is formed by the concentrated liquid which has flowed down. The aforementioned cast film was peeled off. Arrival, two:: strips The aforementioned moving support. Turtle II ^ early 70 support record (four) arrived at the 1st. The 卩 support unit support is located in the aforementioned stripped Qiu support Zhao. The film cooling unit is in a state of vertical transfer in the above-described shift-off:=. The above-mentioned moving support before the drying portion of the crucible is opened:: 2:: The above-mentioned cast film before the arrival of the heat obtained by the above-mentioned support heating unit. Both ends of the surface of the branch. In the support means of the arrival section of the month I, the above-mentioned concentrated liquid which flows down in the thousand faces reaches the both ends. The inner support member is provided with the above-mentioned support member for supporting the movable support body, and the member is a nip roll and the inner side support structure is invented by the inner (four) wire. The movable support body is provided with the support unit 1 for cooling h, the support body for adding the product, and the peeling portion. The arrival portion reaches the flow down two: the extended concentrate contains the polymer and the solvent. The front and the extension are formed by casting the cast film under the circumstance 9 201238740 *tl /Z.〇pil liquid. The film drying section peels the melt film from the solvent. The reaching portion is separated from the film drying portion and reaches the peeling == shift: the casting film is cooled to be in a state of being independently transportable. == Yuan heats away from the front part of the previous section. Membrane heating single = 3 = 热 The heat of the 到达 before reaching the 臈 drying section, the lining process, the Wei cheng and the peeling ι private and the contact between the film ray process and the lion process film cooling process shortened from the film drying process The time required until the stripping process. In addition, during the period when the lion is thrown down to the next position, the heating process is carried out, so that the film of the casting film formed by the lower-concentration process can be added from the inside side. Heating process. The surface of the slag is smoothed by the addition of the film. Thus, according to the present invention, it is possible to produce a film or a film with high efficiency and unevenness. In addition, when the labeling process is followed by the film cooling process, the moving branch body is lightly curved due to the heat history, but according to the present invention, the thickness of the casting film caused by the warpage of the moving support can be suppressed. All. [Embodiment] (Solution film forming apparatus) As shown in Fig. 1, the solution film forming apparatus 1 has a casting unit 12, a drying unit 1338740 drying unit 13, and a winding unit unit. (Casting Unit) The casting unit 12 produces the wet film 25 from the dope 24. The dope 24 contains a polymer 23 (referred to as a base polymer) 22 which is a raw material of the film 21 and a solvent 23 of the polymer 22. The details of the casting unit 12 will be described later. (Drying Unit) The drying unit 13 is a method in which the solvent 23 is evaporated from the wet film 25 and from the wet film 25 to the film 21. The drying unit 13 includes a clip tenter 35, a slitter %, a drying chamber 37, and a cooling chamber 38 which are disposed in this order from the casting unit 12 toward the winding unit. In the transfer cassette 40 between the casting unit 12 and the clip tenter %, the belt-shaped wetting film 25 sent from the flow element 12 is conveyed by the plurality of rollers 41 to the clip tenter. The clip tenter 35 has a sleeve. The tube 35a, the pair of guides, the clip 35b, and the dry air supply machine 35c. The movement path of the wet film 25 is provided in the sleeve 35a. The guide rails disposed in the inner side are arranged on the guide rails of the moving path of the wet film 25. The plurality of clips 35b are freely movable between the gripping state of the gripping film 25 and the releasing width direction of the both sides of the wet film 25, and are freely movable along the guide by the chain 35b (not shown) The link is a ring. If the clip says the position, the clip says that the degree of transition from the release state =: i and this, /; the sub 3_ clip says that the sides of the width direction of the wet film 25 are removed. ι 201238740 Paired guide rails - Separate from the handle The shot box position is raised by the grip holding position. Here, the width of the wet film 25 at the grip start position is set to Wfl, and the maximum width of the wet film 25 is set to Wf^Wf2/Wfl to 丨〇5 from the grip start position to the grip release position. 1.5 or less is preferred. The dry air supply machine 35c for blowing the dry air of the dragon film 25 is disposed above and below the moving path of the wet film 25. . The slitter 36 cuts the edge of the wet film 25. The cut edge portion is sent to a crusher (not shown) by air supply, and is cut finely and reused as a dope raw material. A plurality of rollers 45 are disposed in the drying chamber 37. The wet film 25 is wound around the roller 45 while being conveyed. The adsorption recovery unit 46 is connected to the drying chamber 37. The adsorption recovery unit 46 recovers the solvent 23 evaporated from the wet film 25 by adsorption. By recovering the solvent 23 in the drying chamber 37, the condensation point of the solvent 23 in the drying chamber 37 is adjusted within a constant range, and therefore, the agent 23 evaporates from the wet film 25 during the transfer in the drying chamber 37. As a result, the film 21 is obtained from the wet film 25. The film 21 is cooled in the cooling chamber 38 until the temperature becomes approximately room temperature. (Winding Unit) The winding unit 14 includes a winding chamber 54 having a winding core 51, a winding drive unit (not shown), and a pressure roller 52. The core drive unit rotates the core 5 at a predetermined speed by a control unit (not shown). As a result, the film 21 is wound up on the winding core 51 with a predetermined take-up tension to form the film roll 55. The pressure roller 52 presses the film 21 wound around the winding core 51 toward the winding core 51 or the film roll 55 wound on the winding core 51. Thereby, it is possible to wind the film 21 while preventing air from entering between the crucibles 21. Between the take-up chamber 54 and the cooling chamber 38 is provided in the width direction 12 of the film 21 20123874 (^ both sides of the shape of the money * (the details of the casting unit (4) ^ 57 is preferred. As shown in Figure 2, The dope is provided with a casting sleeve 75. The flow # is used to form the wet film 25, the casting unit 12 62, the surface layer forming device 63, the official 7. 5 is provided with a casting die 60, a ring-shaped driving mechanism 66, and first to fourth The drying device 64, the peeling roller 65, and the dosing liquid 24. The endless belt 62 is a sealing member 71 to 74. The casting die 6 is discharged 24 and the casting liquid 6 formed by the casting film 6 ι' is formed and formed. The support body is actuated by the surface 61a of the concentrated liquid film. The surface layer forming device is imaginary flow chart 1) from the casting film 61 to the layer. The film drying device 64 makes the solvent 23 (the stretching film 6 tape moving mechanism = (four) from The endless belt 62 peeling flow (annular belt moving mechanism) circulates the endless belt 62 in the pre-twisting direction. The belt moving mechanism 66 is used to guide the guide. The belt moving mechanism 66 belt 62 is directed to the motor 66m in a predetermined direction. "The preparation rollers 66a to 66c and the driving roller 66c are substantially parallel to each other. Pro 6 is arranged with the stick 66C, and is disposed in the plane than the plane." The two sides of the scorpion scorpion. The rollers 66a 龀 6 龀 upper winding surface 62b is a 66-shaped garment-shaped annular belt 62. The endless belt 62 is supported by a belt ^ a ~ c. If the roller 66c Driven by the motor 66m

When it is rotated, the endless belt 62 is, for example, a square J of 66, a roller 66c, a pro 66a ... 66. . Thus, the moving path 66r of the %-shaped belt 62 is formed by the parent 6 . The roller 66x roller 66z is a belt inner belt for the endless belt 62. The same is applied to the movement path 66r of the endless belt 62. The roller 66 is disposed between the pro- and pro-66a. The roller 66y is disposed between the roller 66b and the roller 66c. The endless belt 6 obtained by the two ends of the joined sheet has a corrosion resistance and strength of su (four) =0, and the width is, for example, the casting of the new 24 =:::= times or less is preferably the preferred "circle belt 62" The length of the length is 0.5 or more. The thickness of the ring-shaped belt 62 is, for example, the lower one: the grinding is better, the table is a table * a ^ (sealing member), the first to fourth sealing members 71 to 74 Road 66r. The first sealing member T is placed in the movable belt of the %-shaped belt 62 and the light-weighted 66x phase material: the moving path 66r which is only the moving path through the endless belt 62, and the sealing member 66 is disposed to pass through the endless belt. 62 is a method in which the moving path 66r of the third to fourth sealing members 73 to 74 is transmitted through the endless belts 2 and 4, and the moving direction of the slings 62 is left. Arranged in order from the ring side. The ',, and direction' upstream side faces the downstream first sealing member 71

And the windshield W attached to the mounting plate 75& of the slab 71 has a shielding casting sleeve 7; The windshield... has a surface that protrudes from the inner wall surface of the casting sleeve and faces the ring: 201238740, set. The labyrinth seal claw is provided at the front end of the windshield 71a so as to sin the near belt surface 62a. The second sealing member 72 to the fourth sealing member 74 have the same configuration as the first sealing member 71. The casting sleeve 75 is partitioned into a casting chamber 75a, a film drying chamber 75b, a separation chamber, and a support heating chamber 75d from the upstream side in the X direction toward the downstream side by the respective rolls and the respective sealing members. The casting chamber 75a is made of the first sealing member? ^, the e-th sealing member 72, the roller 66x, and the roller 66y are formed. Similarly, the film drying chamber ' is formed of the second sealing member 72, the third sealing member 73, the roller 66y, and the roller. The peeling chamber 75c is formed by the third sealing member 73, the fourth sealing member %, and the roller 66c, and the support heating chamber 75d It is formed by the second sealing member η, the fourth sealing member 74, the roller 66c, and the roller 66x. (Casting chamber) The casting die 60 is provided in the casting chamber 75a. The casting die 6 is disposed so as to be opposed to the roller 66a by the moving path 66r that passes through the endless belt 62. The casting die 6 is placed between the disk rolls 6 to form an arrival portion. The casting die 6G has a slit outlet for discharging the dope 24 toward the front end. The casting die 60 is disposed such that the slit outlet is adjacent to the portion of the endless belt 62 supported by =. The dope 24 flowing out from the casting die 6 在 is extended on the belt surface (4), and the result is a strip-shaped casting film 61. The decompression chamber 77 is preferably provided in the casting chamber 75a, and is preferably located on the upstream side. Under the control of the control unit adjacent to the casting die 60, the pressure on the upstream side in the Χ direction of the decompression chamber 77 of the decompression chamber 77 becomes lower than the downstream side in the X direction of the bead. . Here, the liquid bead refers to a former in which the dope 24 is formed before reaching the endless belt 62. In the film drying chamber 75b, a surface layer forming device 63 and a film drying device 64 are disposed in this order from the upstream side toward the downstream side in the X direction along the moving path 66r, and the surface layer is formed to form a cast film. 61 is supplied to the surface layer to form the wind 80, and the film drying device evaporates the solvent from the casting film 61. (Surface layer forming device) It is preferable that the surface layer forming device 63 is disposed on the most upstream side in the X direction of the film drying chamber 75b. As shown in Figs. 3 and 4, the surface layer forming device 63 disposed close to the film surface 61a has an intake duct 81, a cover 82, a pre-intake nozzle 83, and a register 84. The intake duct 81 and the outer cover 82 are disposed in this order from the upstream side in the X direction toward the downstream side. The intake duct 81 is formed to flow through the surface layer forming wind 80, and is disposed closer to the second sealing member 72 in the X direction and away from the film surface 61a. The pre-intake nozzle pre-intake nozzle 83 is provided on the surface 81a on the membrane surface 61a side of the intake duct 81 as it approaches the membrane surface 61a from the upstream side in the x direction toward the downstream side in the x direction. A pre-intake port 83a opening toward the surface of the belt is provided at the front end of the pre-intake nozzle 83. As shown in Fig. 5, the pre-intake port is extended from one end of the endless belt 62 to the other end of the endless belt 62 in the width direction of the moving path (hereinafter referred to as the Y direction). Further, it is preferable that the pre-intake port 83 & and the surface are on the same plane. As shown in Fig. J and Fig. 4, the outer soap is guided to the downstream side in the X direction. 2==^ The surface layer which is sent out forms the wind 8. Further, the film 61 is stretched away from the red cover h of the casting film 1. The outer cover 82 is formed in a plate shape extending from the intake (four) 81 in the χ direction to the film drying device 64 (for example, the film 201238740 =1 before). In the Y direction, from the end of the endless belt 62 to the = belt 62 (four) m 82 in the face - there is a guide surface 82a which is aligned with the film surface n ^. Further, it is preferable that the guide surface 82a and the surface 81a are on the same level. An air passage 86 that forms a wind 8G from the surface of the front air inlet and the belt surface 62a is formed between the surface 仏 and the belt surface 62a at a downstream end portion of the outer cover 82 in the x direction. It is preferable that the interval from the surface 81a to the surface of the belt is, for example, 20 mm or more and 15 mm or less. The width of the upper air path 86 is, for example, Α γ 古 古 l & '' direction 0.8 times or more i times the following two is χΥ = : the moving speed V of the surface 62a of the w-shaped belt width V, etc.)

For example, it is preferable to have a size of 5 mm or less or less. The wind register 84 has a temperature regulating machine that forms the wind in the surface of the wind. The brewing degree of the 夬 - 、 、 、 、 、 、 、 、 、 、 、 、 、 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 Send a fan (not shown). The side wind forming handle 63 may be provided on the surface layer forming device 63 so as to face the lake in the υ direction and to guide the XH85 of the f 81 from the field. Side windshield The downstream end of the military 82 in the X direction is extended. The side windshield extends toward the belt surface 62a throughout the outer surface 82a. The surface 85a on the inner side in the Y direction of the guide as shown in Fig. 5 and the pre-intake nozzle 83 are preferably in the same plane as the wind shield 85. The inner surface 83b is in the phase (film drying device). As shown in Fig. 2, the film drying device 64 is provided with a front film dryer 88 from the χ to the downstream side and a dryer 89 to the upstream side. 17 201238740 (Front 臈 dryer) а и if the machine 88 moves along the endless belt 62 from the _y, to the part of the roller 66b jiagan _ 8δ has a surface associated with the #_ wind The 9G front side air supply 11 91 is disposed on the inner side of the belt inner side 62b and is disposed on the inner side air supply adjuster 93 (not shown). And the drying is (surface side air blower) The surface side air blower 91 is provided with an intake duct (not shown) and an exhaust duct (not shown). The intake port of the intake duct and the exhaust port of the exhaust duct are opposite to the front of the watch. Further, the intake port of the intake duct and the exhaust port of the exhaust duct are extended from the end of the casting film 61 to the other end. Further, the intake port of the intake port and the exhaust duct are alternately arranged in the x direction with respect to the (inside side blower), and the side blower 92 is provided with the name of the intake money in the same manner as the surface side blower 91 (4) / Inlet of the intake duct = ritual & the nipple with the inside of the 62b front opposite the inlet of the duct and the exhaust duct of the exhaust duct from the cast film 6 ^ = = intake duct intake It is preferred that the exhaust of the mouth and the exhaust duct are alternately arranged in two directions. ^ The front dry air regulator has a thermostat that will set the temperature of the front dry air 90 within a temperature range (Fuyuan-, 4p is in the pre-figure) and transports the pre-dry wind 90 to the chaotic catheter at a predetermined air volume. Fan (not shown). The surface side air blower 91 is directed from the air inlet to the film surface - before the delivery is blown 201238740 wind 9 〇 and the front dry air is sucked from the exhaust port 9 〇 92 from the air inlet toward the inside of the belt. The inside side air blower attracts the front dry wind. 90. Dry and no wind 90 and from the exhaust port In addition, the front side air blower 91 can obliquely convey the front dry air 90. Similarly, the fields and a are blown in the vertical direction. The gossip * a morning side air blower 92 can blow the front dry wind 90 to the belt / / D vertical direction. ▼Face surface 02b (post film dryer) The film dryer 89 is disposed along the moving path % of the endless belt 62 toward the portion of the roller 66c. The post-film dryer 89 has a parallel blower % with a 62a side and a dry air 94 after delivery, and a rear side blower 9 with a 62b side. »In the morning, the parallel direction is sent 95 from the X direction (not shown). With parallel exhaust duct wish peace march _ = according to: person set 'and surface =: gas = ^ duct 9" is not equipped with the row of the discharge port. Heart m set the exhaust after the exhaust air 94 row of the mouth toward the X The exhaust port opening σ in the direction of the downstream side is annularly connected to the other end in the direction of the x-direction. The air inlet of the air 94 is dried after being sent in parallel. The opening toward the upstream side of the X direction is from the cast film. One end of 61 is extended to the other end. The inner side air blower 96 sends out the rear dry air 94, and the same structure as the morning side air blower 92. The rear dry air conditioner (not shown, has the money to be The temperature of the wind 94 is adjusted in the meter of the temperature meter of the county and the air blower 94 is sent to the inner side of the air blower by a predetermined air volume or the parallel air intake duct is regarded as a fan (not shown). 201238740 *tl /z, opif (peeling chamber) shape]: i; 5: light 65. The casting sleeve is opened on the 75c of the peeling roller 65 and the roller 66c. The motor 99 is connected. Further, the peripheral speed of the peeling chamber is larger than the outlet 75 翻. The core can be peeled off by the peeling roller 65-shaped belt 62; the foot loop belt 62 is peeled off from the casting film 61. The U ί film becomes the wetting film 25 and is sent out from the outlet 750 to the dry shovel 13 (refer to Fig. 1). The sac is provided in the branch room 75d of the ritual (the standard heating chamber) to send the heating wind 110 Deben I ^ The support heating device 111 has a surface side heater 112 disposed on the side of the belt, a surface side heating state 113 disposed on the side of the belt inner side 62b, and a heating air conditioner 114. One of the surface side heater 112 and the back side heater 113 may be omitted. (Surface side heater) As shown in FIGS. 6 and 7, the surface side heater 112 has an intake duct 112a and an exhaust duct (not shown). The intake port 112 of the intake duct 112a and the exhaust port of the exhaust duct are opposite to the front surface of the belt surface 62a. The intake port 112 and the exhaust port are respectively extended from one end of the endless belt 62 to the other end. That is, in the Y direction, the width of the intake port 112 and the exhaust port is wider than the casting width CW. In addition, the intake port 1 It is preferable that 12 〇 and the exhaust port are alternately arranged in the X direction. (Inner side heater) The inside side heater 113 has an intake duct 113a and an exhaust duct (not shown). The intake port of the intake duct 113a 113〇 and the exhaust port 20 of the exhaust duct 20123874 (^ 113i is opposite to the front side of the belt 62b. The air inlet 113〇 and the exhaust port (10) are respectively extended from the end of the endless belt 62 to the other end. In the γ direction, the width of the intake port 113 〇 and the exhaust σ (10) is wider than the casting width cw. In addition, the air inlet 113. It is preferred to alternate with the exhaust port (10) in the other direction. The heating wind g (the fifth state 114 has a temperature controller (not shown) that adjusts the temperature of the heating air 11〇 within a predetermined range and sends the heating air to the surface side heater 112 and the inside side heating with a predetermined air volume. a delivery fan (not shown) of the intake ducts 112a and 113a of the 113. The surface side heater 112 sends the heated air 11G from the intake port 112A toward the belt surface 62a and sucks the heated air 110 from the exhaust port. The device 113 sends the force σ hot air 110 from the intake air σ 113 〇 toward the belt morning surface 62b and sucks the heating air 11 从 from the exhaust port 113i. ^ Returning to Fig. 2, the roller temperature adjustment of the temperature of the regulating roller 66a is connected to the roller 66a. The roller thermostat 122 is connected to the roller 66b by the temperature of the adjustment roller 6, whereby the roller 66b causes the solvent to be ejected from the casting film 61 by the heating of the casting film & The roller 66b is included in the film drying device 64. The cooling thermostat (2) is connected to the cooling unit 66. The cooling light 66c 'view 66c is cooled by the thermostat (2) as the cooling casting film 61 through the endless belt 62. The film cooling means functions. Positive = and, although not shown, it can be contained in the casting sleeve 75 by providing condensation. The solvent condensing device in the atmosphere and the recovery and recovery of the condensed solution are set to maintain the temperature (condensation point) of the solvent liquefied in the casting sleeve f75 as a gas within a predetermined range. 21 201238740 Next, as shown in the figure 8 +. The flow path 126 and the thirst 2 are sequentially performed (summary of the claw L film forming process). The casting unit 12 shown in the wet film 25 2 is obtained from the /liquid solution 24, and the process 12 This will be described later. The details of the film forming process 126 of the machine (wet film drying process) are made from the wet _ 25 evaporation process 127 by the wet film of the drying unit 2 shown in FIG. From the holding position of the centerpiece 35b to the holding dry air supply machine 35°, the wetting film 25 which is delayed in drying to 37 is wound around the plurality of rollers 45 while being conveyed by the plurality of rollers 45. ^ The agent evaporates from the film in the sleeve wrist _ send the Ke humidity 'dissolve 25 into the film 2 disc.' Read the film (the details of the casting film forming process) as shown in Figure 8, the cast film forming process In 126, the process of fluid flow in the desert gas flow 13 is carried out in turn, the film heating process 133, the surface layer formation system 22 201238740, process 134, film drying process 135, film cooling process 136, stripping system and support heating process 138. As shown in Fig. 2, if the roller 66c is rotated by the driving of the motor 66m, the endless belt 62 is sequentially The chambers 75a to 75d in the casting sleeve 75 are cyclically moved. The temperatures of the rollers 66a to 66c are adjusted within a predetermined range by the roller thermostats 121 to 123. In the storage tank not shown, the dope 24 is The temperature is adjusted to be substantially constant within a predetermined range. The dope 24 is sent from the storage tank to the casting die 60 by a pump (not shown). The temperature of the casting die 60 is adjusted to be substantially strange within a predetermined range by the setting machine provided in the casting die 6〇. The vessel (swelling chamber) is subjected to a dope flow down process 131 (refer to FIG. 8) on the dope belt surface 62a flowing out of the casting die 6a in the casting chamber 75a, and a dope 24 is formed on the tape table 62a. The casting process of the casting film 61 is performed as shown in Fig. 8) and the film heating process 133 of the heating casting film 61 (see / (dope flow process) >;° the casting die 60 is oriented from the slit exit toward the belt surface Continuously 24. The concentrated liquid 24 flowing out of the slit outlet reaches the portion of the belt 6 which is supported by the roller 6, i.e., the reaching position on the belt surface 62a. Gong (casting process) Since the endless belt 62 is in a moving state

On the γ surface 62a, the concentrated liquid 24 that has been transported to the arrival position DP is cast in the moving direction. Thus, the casting film 61 which is formed of the dope 2 and is cast as the casting width 6 is formed in a strip shape on the 6 仏. ^ ^ The moving speed of the endless belt 62 is 20 〇 111 / min or less. Preferably, if the moving speed v of 23 201238740 exceeds 2G () m / min, the lower limit value of the liquid moving speed v of the position of the shaft is considered to be the target _ productivity. The moving speed v can be, for example, 2 Gm / min or more. The content of the solvent in the dope 24 flowing out of the casting die 6 is preferably 300% by mass or more, preferably because it flows out from the casting die 6〇. Concentration, the solvent content in 24 is less than 3 〇〇# 〇/〇, the viscosity of the concentrated solution becomes south, and stable casting cannot be performed. If the effluent 24 flows out from the casting die 6 () When the solvent content exceeds 450 mass 〇/〇, the drying of the film drying chamber w is negative, and as a result, the raw meal rate is lowered, so it is not preferable. Here, the solvent content is a dry basis, which means desert liquid, cast film or each film. The amount of the solvent to be contained is taken from the target film, and the amount of the sample (four) is X, and when the mass after the dry sample is 7, it is /y}xl. The temperature of the dope 24 flowing out of the casting die 60 is preferably 2 〇t or more and less than the boiling point of the solvent. This is because when the temperature of the concentrated liquid flowing out from the casting die 6 is less than 20 ° C, The viscosity of the dope 24 becomes high and stable casting cannot be performed. Further, when the temperature of the dope 24 flowing out of the casting die 60 passes through the boiling point of the solvent, the bubbling of the dope 24 occurs, which is not preferable. In addition, the lowest boiling point among the boiling points of the plurality of compounds is shown. (The film heating process) The second sealing member 72 and the roller 66y are separated from the reaching portion by a predetermined distance toward the downstream side in the χ direction, so that the predetermined portion is formed from the reaching portion toward the downstream side in the χ direction. The casting zone (casting portion) CZ of the length. The f-winding zone cZ is used as a film heating means to heat the film of the casting film 61 by the endless belt 62 heated by the support heating process 138, which is described later, 24 201238740. 133. Here, the film surface 61a of the casting film 61 after the formation of the casting film after the casting process 132 is not smooth (refer to FIG. 9). Therefore, the casting film 61 after the casting process 132 is performed. Uneven thickness is generated on the surface. It can be considered that the thickness is not The turbid liquid 24 of the casting film 61 which constitutes the casting process 132 contains a large amount of solvent, and is easy to exhibit fluidity. Therefore, in the present invention, the heated endless belt 62 is used. The film heating process 133 of the casting film 61 after the casting process 132 is heated. By heating the casting film 61 after the casting process 132, the fluidity of the casting film 61 after the formation of the casting film 61 is increased. As a result, the film surface 61a of the casting film 61 after the formation becomes smooth (refer to FIG. 1A). The length of the casting region CZ in the X direction is not particularly limited as long as the film surface of the casting film 61 after formation can be ensured. The fairy becomes smooth until the time required. The film heating process 133 is preferably carried out on the casting film 61 having a solvent content of 3 (10) or more and 450% by mass or less. The temperature of the book roll 66a is within the range of the temperature of the ▼ surface 62a at the peeling position and the boiling point of the solvent or less by the roll thermostat 121. (film drying chamber) among the 'film surface 仏 blowing surface layer forming wind surface - side forming surface layer in the casting film 61 film (surface layer forming process) as shown in FIG. 4 'surface layer wire 63 from the inlet nozzle S3 The inhalation 25 201238740 mouth 83a sends out the surface layer to form the wind 8 〇. From the closing direction (the direction in which the pre-intake nozzle 83 is extended) \out == , each angle (10). Above 6. . Preferably, the surface layer formed by the gas port 83a is guided to the downstream side. By the film 矣 of the film 61 extending upstream in the 2=X direction; "the outer cover 82 is easy to flow. The thirsty flow which generates the vortex-like surface layer 80 is easy to pass through ^^6^" due to the thermal energy of the surface layer forming wind δ〇 The volume is transferred to the machine film 6 and thus the film layer of the casting film 61 forms a vortex flow of the wind 80 to promote the evaporation of the solvent.

By the surface layer forming process m, the casting film 61 and the wetting layer 61y (refer to FIG. u) are: the 6U side of the film surface having the surface layer 61X, and the portion which is further dried than the surface layer; J by = 6ly Share. Therefore, the amount of the solvent 3 in the surface layer is lower than that in the wet layer 61y. , ', the surface layer 61x silk surface smooth _ into. When the film drying process 135 is performed to have a surface layer of X, the surface of the surface layer is the film surface 61a of the cast film 61 which is served. The flow is carried out in a superficial shape: = to the cast film 61 which is smooth to the film surface 61a. And again. The surface layer forming process m has a solvent content of 25 G f% by weight or more

Cast film 61 under Hi. It is preferred to carry out. The surface layer forms the temperature of the wind 80: η: 3〇. ° above 8〇. . The following are preferred. Further, it is preferable that the wind speed of the surface layer forming wind is 5 m/sec or more and 25 m/sec or less. (貘 Drying Process) 26 201238740r The film drying process 135 sequentially performs a front film drying process n5a and a film drying process 135b. , (front film drying process)

The rake pre-film dryer 88 performs a film drying process 135a before evaporating the solvent from the casting film 61. The front side air blower 91 blows the front drying air 90 to the film surface 61a to evaporate the solvent from the casting film 61. Also, the inside side air blower % is 6% inside the belt. The pre-drying wind 90 is owed, and the film 61 is heated through the endless belt & The solvent is ejected from the cast film & by the heating of the casting film 61. (Post film drying process) ...X, the post film dryer 89 performs a drying process of the solvent after evaporating the solvent from the casting film 61: 35b. The parallel blower 95 evaporates the dissolved ship casting film 61 against the film surface 61 of the casting film 61 = the post-drying air 94'. Further, the Ride 96 is blown to the belt inner 62b to dry the air 94, and passes through the endless belt 62 to heat the cast film 61. The solvent is evaporated from the casting film 61 by the heating of the casting film 61. The post-film drying process (10) is carried out until the cast film 61 is preferably 210% by mass or more. The film is dried and the film drying process 135b is carried out with the heat of e>6b. It is better to carry out the adjustment. By performing each process 131 to 135 (refer to FIG. 8 surface Ma smooth casting 貘 61 (refer to FIG. 12). 』 membrane (disbonding chamber), stripping chamber 75e for cooling annular strip & film cold vent From the peeling process 137 of the film 62, the casting film 137, 27, 201138740 Hi / Z〇pif (film cooling process), the temperature of 66c becomes 〇 by the roller thermostat 123 (t and above i7: Further, it is preferable that the temperature of the light 66c is the same as that of the above-mentioned blowing. The borrowing zone m becomes a high-temperature state. The belt 62 is cooled by contact with the roller 66c, and is passed through the cooled film 61. __136_# "(Peeling Process) The lion process 137 (Inflammatory 8) which is used to form the casting film 61 which is peelable from the endless belt 6 by the peeling roller 65. It is supported by the (4)e in the endless belt 62. The portion (the position = the figure = 3⁄4 strip 62 is peeled off into a peelable state, and the casting film 6 which is peeled off from the ring is fed as a wetting film 25 from the outlet 75. = deviation of the orientation angle ' The solvent content is less than or equal to 2% by mass. The lion is difficult to be 137. The casting film 61 is peeled from the raw material rate: Process (support body heating process) 7 The endless belt 62 after the stripping flow ^ 61 is buried back into the grip i 75a through the support heating chamber. The material is continuously cooled by the film cooling process 136 to cool the strip 62. Process (3), flow: : skill 134., directly in the film surface... smooth shape =) drying, resulting in uneven thickness on the casting film 61 caused by the thick film on the casting film 6 It is impossible to go through the subsequent process 2 201238740, and thus eventually results in uneven thickness of the film 21. Therefore, 'in the present invention', in order to perform film heating between the (n)th secondary flow and the first nit surface formation process m In the process (3), a support heating process 138 for heating the endless belt 62 is performed. In the 裟-swing heating chamber 75d, the returning body 138 is added by the support body heating heat ring 62. , imU12 on the silk surface 62 & money force 11G, heating the ring Ϊ until the temperature of the belt surface 62a becomes a predetermined range. Similarly, for the inside of the belt (four) blowing heating, heating the annular belt G to the temperature of the belt surface 62b becomes predetermined Range. The heating belt surface 62a in the straight support heating process 138, The temperature of the middle surface 62a is preferably in the range T1. The lower limit of the range T1 is better than the boiling point of the solvent. The lower limit t: t is better, and the hunger is better. The upper limit of the range T1 (solvent = is preferred. In addition, the temperature of the assembly (rolls 66a, 66x, etc.) which is used as the support device is also preferably in the range of 耵. The towel of the present invention is imparted in the heating system of the branch body 38 The heat of the ring 2 is applied to the film heating process 133 which is formed by the next casting process 132 and formed on the endless belt. Therefore, according to this praise month, it is sufficient to suppress thickness unevenness and to efficiently produce a film. Further, the film heating process 133 may be performed between the peeling position ρρ position DP. Next, other embodiments of the present invention will be described. For the same component symbols as those of the above-mentioned 29 201238740 ===, the components are omitted. I. The different parts of the upper 24 modes are described in detail. The use of the surface of the belt must be carried out. The inside of the belt is 62b. The support of the heated air 110 is added to the support w ln v ^ And a support heating device (4) for the heating roller in contact with the two sides. For example, the second set 141 has a surface I# in contact with the belt surface 62a. The temperature of the surface heating roller 143 is read by the temperature regulator region cz 1 to heat the surface of the surface, and the money is passed through the casting range T1. When the temperature is changed by the roller temperature adjuster 144, the temperature regulator 123 can cool the roller 66z disposed downstream of the sin of the film drying. The film is cooled by the roller thermostat 123 to become a film cooling means. Therefore, as long as it is performed after the film drying process 135, the film cooling process 136 can be performed in the film drying chamber 75b. In the above embodiment, the shirt cooled by the light thermostat 123 is used as the film cooling means', but the present invention is not limited thereto. As shown in Fig. 2, the cooling unit 148 of the endless belt 62 before cooling to the surface position = can also be used as a film cooling means. The cooling unit 148 disposed between the post-film dryer 89 and the cooling roll 66c in the film drying chamber 75b has a liquid supply device (10) for supplying liquid to the inside of the belt, and a dry air (9) for evaporating the liquid inside the belt. New device 151. The liquid supply unit based on the button device 149 can be used to coat, spray, and spray the liquid device 149 and the evaporation device 151 along the endless belt and the seed. For the 2b ship, the upstream side of the X direction is directed toward the downstream side, and the liquid is supplied to the inside (4) of the belt. The hair-emitting device ^ The surface 62b blows the dry wind 15 〇, and the liquid inside the belt 6b with the inside of the belt 62b, the liquid with the 寞 and ^ burst. The gasification enthalpy on the right drops the temperature of the solution by liquid = heat. Reading, energy, unit, Μ, δ, cooling, annular band, liquid, as long as the liquid is reached in the endless belt 62, for example, methylene chloride or the like can be used. In the case of the film cooling means, the rolls 66c and 66z may be used in a wide range, and the number of the rolls may be ‘66c, 66z, and cold=:=. The 2-turn level in S maintains the surface of the belt, which is preferred for light-noise. Further, as shown in Fig. 15, a level _66dr roller 663 disposed on the surface and supporting the inside of the belt (4) is disposed between the roller 66a and the roller 66y and is as shown in Fig. (6) Between the two sides on the same level as the view 66χ and supporting the inside of the belt (4):: Γ = 121 adjusts the temperature of the backup roller 66e to become the mouth, and the support light 66e serves as a support heating means to play the other By means of the roller thermostat 121 镅 舸 舸 从 从 从 借 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Further, the above is not limited to 31 201238740 / 'opif. However, as shown in FIG. 17, the roller 66a and the newspaper 66b may be disposed on the same plane (for example, a horizontal plane) and disposed on the roller 66a and the roller 66b. The roller 66c is disposed below the plane. Further, the roller 66z can be disposed between the roller 66a and the roller 66b. Further, the roller 66c shown in Fig. 2 has an endless belt 62 supporting the peeling position pp. The function and the sealing function based on the third to fourth sealing members 73 to 74 can be separated from each other. For example, Fig. 7 | The cylinders 66c, 66f, and 66g correspond to the roller 66c shown in Fig. 2. Further, the pro 66c of Fig. π has a function of supporting the endless belt 62 on the peeling position PP. The support roller 66f of Fig. 17 cooperates with the third sealing member 73. The sealing roller 66g of Fig. 17 cooperates with the fourth sealing member 74 to function as a sealing function. The roller thermostat U3 cools the roller 66c. The roller thermostat 123 can cool the roller 66f. Also, the thermostat can be used. 123 heating|Kun 66g. Thereby, the roller 6 is known to function as a support heating means. Further, the roller 66a shown in Fig. 17 corresponds to the hybrid 66x and 66y shown in Fig. 2 as a body. As shown in Fig. 18, the pro 66a and the stick 66c may be disposed on the same plane (e.g., a horizontal plane), and a roller 66b may be disposed between the roller 66a and the roller 66c. The roller 66b of the support belt inner 62b is disposed to face from the roller 66a. The endless belt 62 on which the roller 66c moves is substantially horizontal. Further, the roller 66b can be disposed more than the sin. 66a and the pro 66c. The roller 66a shown in Fig. 18 corresponds to the rollers 66a, 66x, 66y shown in Fig. 2. In the above embodiment, in the support heating process 138, the γ is directed to the entire area. The strip 62 is heated, but it is also possible to heat only the portion of the casting zone CA (refer to FIG. 6) of the casting width CW in the shape of the crucible 32 201238740 62 (refer to FIG. 9). The non-casting zone other than the casting zone CA (refer to FIG. 6) is not heated until it is required to be 'thus in the film drying process 135'. The foaming of the casting film 61 on both sides in the Y direction can be reliably suppressed. Further, 'the central portion in the Y direction in the casting zone CA may be a heating portion', and both end portions in the Y direction in the casting zone CA may be non-heated portions. At this time, the width of the non-heated portion in the Y direction is, for example, 10 mm. Further, a support surface cleaning process of the cleaning tape surface 62a may be performed between the peeling process 137 and the inspection body heating process 138. The peeling failure can be reliably suppressed by the support surface cleaning process. Further, the foreign matter remaining on the belt surface 62a (e.g., a portion of the cast film which is separated from the residual film) can be removed by the surface cleaning process of the support. The foreign matter becomes the cause of the vibration of the liquid bead. Therefore, the vibration of the liquid droplet can be prevented by the surface cleaning process of the support. In order to clean the belt surface 62a, for example, a dry ice washing machine which sprays dry ice on the belt surface 62a is preferably used. Further, a contact angle lowering process for reducing the contact angle of the belt surface 62a with respect to the dope 24 can be performed between the support heating process 138 and the next dope down process 131. By the contact angle lowering process, it is difficult for the carrying wind to flow between the liquid bead and the belt surface 62a. Therefore, it is possible to prevent the thickness unevenness of the cast film caused by the inflow of the wind by the contact angle lowering process. Here, the carrying wind means that wind occurs in the vicinity of the belt surface 62a due to the movement of the endless belt 62: the wind flowing in the X direction. In order to reduce the contact angle of the belt surface 62a with respect to the concentrated liquid 14, it is preferred to apply a solvent to the belt surface 62a. The solvent used in the contact may be the same component as the solvent 23 or may be the same as the solvent of the 23 201238740 solvent 23. In the above embodiment, the support heating process is provided between the stripping process 137 and the dope down process 131, and between the process 132 and the film heating process 133. In the casting process ° = = heat, between the heart of the building body heating process 138: US section fine 161 er" "will be _ _ into difficult (6) of the unit 165. Casting 7L 165 towels, In the tape inner side 62b side of the casting zone cz and f as the reading body heating means 168 of the support heating means. The device 168 has the inner side heater 113 and the heated air mouth branch body heating means (10) for the inside of the belt. 62b side addition = 114 ° From the side of the endless belt 62, the vapor-extending film 6彳, the strip 62, and the heat device (10) can suppress the "mixing of the cast film in the casting zone (10). The endless belt 62 is heated on the side 62b. This is because if the endless belt 62 is heated from the surface of the belt, the film is heated in the film;; == Alternatively, it can be replaced by a tempering heart. Further, in the range T1', the report 66y functions as a bulk heating means. Solvent ===== Evaporation of membrane 61: The concentration of the body is higher than that of the surface layer formation system ===: Preferably. Among them, the 'TM atmosphere: is not a gas-like solution contained in the atmosphere of temperature Ta. The atmosphere T of the mass I n of 201238740 HI / Z〇pif agent becomes a gaseous state of saturation or a second Ϊ = In the middle of the support body surface cleaning process flow Ϊ Ϊ = = for the stripping process 137 and the next thick surface clear f process, connection _ 嶋 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The handle is lowered under the liquid flow: / The contact angle of the strip surface 62a with respect to the dope 24 is lowered by the contact angle lowering process, and the carrying wind is difficult to flow into the liquid stop due to the '撼 belt between the ml. Therefore' can be contacted The thickness of the cast film caused by the angle-reduction process is not uniform. In the bean, the load refers to the wind that flows in the near X direction on the belt surface 6 due to the movement of the endless belt 62. * X ugly toward the contact angle, in the belt body (10) to reduce the belt surface must be relative to the concentrated liquid 24 = Γ: coating solvent is preferred. In the contact angle reduction system 2 can be used with _ 23 phase _ ingredients , which is also a common component of solvent 23. 々匕S^, in turn, successively carry out the casting film formation process of each process, based on After the film, part process 136 is cooled, the annular belt 62 is heated by the branch 艟 = process 138. The annular band that is heated immediately after cooling is prone to warpage, especially the ring wound on each roll. The fourth ray in the yoke 62 is a problem. That is, if the directly sinuous annular belt 62 is subjected to the liquid flow lowering process 131, the interval from the slit outlet flowing from the concentrating liquid 24 to the belt surface 62a is in the γ direction. There is a deviation in the upper part, so that the length lb of the bead in the γ direction is also deviated. The γ direction 35 in the process flow 13 of the dope flow is shown in the casting film 6 形成 formed in the casting process 32 as a deviation of the γ direction 35 201238740 /ζ, οριίme The thickness in the Υ direction is not uniform. In the: 曲篇, * ^ to prevent the thickness unevenness caused by the warpage of the % ribbon 62, in the case of the liquid solution ~ the lower process 131 Yin support support holding process is better. 73⁄4 The miscellaneous ^ ^ roller and the pressure roller 202 ^ the nip roller 202 are disposed in the opposite manner to the casting f 75a (the reference pro 202 and the endless belt 62) LA:=The winding area LA of the belt 62 means that the belt surface must be on, and the ring belt 62 moving toward the L starts with the light 66a. It is preferable that the portion of the endless belt 62 where the contact position TP1 is in contact with the position TP2 of the roller 66a is biased toward the endless belt 62 by the biasing member. == The arrival position of the dope 24 reaches the DP position. Further, the nip roller 2〇2 is disposed on the moving path 66r (refer to both ends of the γ direction of the reference) so as to be in contact with the suppressing position NP provided on both sides of the DP surface in the Y direction on the tape surface 62a. The suppression position NP is set at a position closer to the arrival position Dp^ or to the upstream side than the arrival position DP in the χ direction. The interval between the position DP and the suppression position Νρ in the X direction is, for example, Gmm or more and 3 mm or less. The sample holder is held by the squeezing belt 62 of the entire region branch 62b in the γ direction and the nip roller 1〇2 supporting the belt surface 62a in the γ direction of the position Dp. The support at both ends of the Υ direction holds the process. 36 201238740 ~*· 4 t With 62^1 support device 2G1, even if it is between the Y-direction charm and the ring between the 66 tH60 and the light shirt, it is also lightly 202 to tr: f γ direction Both ends. The result is 'at least in: holding... enough to prevent the heart of the ring belt 62 from being in the cast film forming process m (refer to the figure W, when the arrival position is in the 2 X direction, the range is changed according to the arrival position Dp) In order to prevent uneven thickness due to warpage of the endless belt 62, only the central portion in the γ direction can be heated in the support heating process 138 (refer to Fig. 8). In both ends of the Y direction of 62, since the expansion based on heating or the contraction based on cooling is small, it is possible to suppress the occurrence of koji. x As shown in Figs. 24 and 25, the surface side heater 112 is provided. The windshield block 210 between the endless belts 62 is disposed in pairs so as to block the Y-direction sides of the air inlet 112 。. The opening width of the air inlet 112 Y in the Y direction is smaller than the Y direction due to the windshield 210 The width of the upper endless belt 62. Similarly, the windshield block 211 disposed between the inner side heater 113 and the endless belt 62 is disposed in pairs so as to block both sides of the air inlet 113 Y in the Y direction. The opening width of the intake port 113A in the direction is smaller than the width of the endless belt 62 in the γ direction due to the windshield block 211. The interval of the windshield 210 disposed in pairs in the direction may be greater than the casting width CW′ or may be equal to the casting width CW. Similarly, in the γ direction, 37 201238740 the adjacent casting width of the pair of windshields 211 CW. I is greater than _width CW, can also be equal to another, as shown in Fig. 24, can be 趑, into a threshold. _ and the film is dry, two sides of the membrane protective film obtained by the present invention. The width of the retardation film or the polarizing yoke 21 is 6 〇〇 m 2 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The present invention is applied to the present invention. The film thickness of the film 21 is Zheng m, and the inner retardation is preferably i 〇 nm or more _(10) or less, and preferably the retardation in the thickness direction of the film 21 is preferably _hH 〇〇. The measurement method of the in-plane retardation Re of 300 nm or more is as follows. The in-plane retardation is used in the measurement; the king of the r2 direction is measured: ==

Re= | nl-n2 丨 xd rU means slow_folding, and (10) means that the thickness of the film (film thickness) is shown. d The measurement method of the thickness direction retardation is as follows. According to the temperature 38 201238740 * + l / ^, 〇 pif ^, micro no oir / oKJi under the mouth _, 珂 image. The oral membrane was subjected to conditioning for 2 hours, and the elliptical value was calculated from the value of 632.8 nm ^ ΐχ / 疋 according to the value of 632.8 nm ^ / 疋, and the delay value of the film surface was measured in the same manner. Calculated according to the following formula.

Rth={ (nl+n2) /2-n3}xd n3 represents the refractive index in the thickness direction. (Polymer) The polymer η which is a raw material of the polymer film in the above embodiment is not particularly limited. When the riding method is used, as a polymer, for example, there is a cellulose thief. On the other hand, when the film is melted into a film, the raw material polymer may, for example, be a cellulose halide, an internal vinegar, a polymer, a ring-shaped tobacco, or a polycarbide. Preferably, the towel is a bismuth-based compound or a nucleus-like olefin, and the towel comprises a sulfhydryl group, a cellulose hydride of propionic acid, and a cyclic polyolefin obtained by addition polymerization, preferably by addition polymerization. The obtained cyclic polyene smoke is further preferred. (Cellulose Telluride) As the cellulose halide, cellulose triacetate (TAC) is particularly preferred. Further, it is more preferable that the ratio of the hydroxyl group of the cellulose esterified with the carboxylic acid in the cellulose halide, that is, the degree of substitution of the thiol group, satisfies all of the following formulae (I) to (III). Further, in the following formulae (I) to (Ιπ), A and B represent the degree of substitution 'A' of the thiol group, and b is the degree of substitution of the fluorenyl group having 3 to 22 carbon atoms. Further, it is preferred that 90% by mass or more of the TAC is 0.1 mm to 4 mm. (I) 2.0<A+B<3.0 39 201238740 *ti /ζ,οριΓ (II) 0<A<3.0 (III) 0<B<2.9 The glucose unit constituting cellulose for p-i'4 bonding Has hydroxyl groups free to the 2, 3 and 6 positions. The cellulose halide is a polymer (polymer) obtained by esterifying a part or all of these hydroxyl groups with a mercapto group having 2 or more carbon atoms. The degree of substitution of thiol refers to the ratio of the hydroxyl groups of cellulose to the deuteration at the 2, 3 and 6 positions respectively (the degree of substitution is 1〇% when esterified. The total degree of substitution is 'DS2 + DS3 + DS6 is preferably 2.00 to 3.00, preferably 2.22 to 2.90, and 2.40 to 2.88 is preferable. Further, DS6/(DS2 + DS3 + DS6) is preferably 0.28 or more, and 0.30 or more is better '0.31 to 0.34. Preferably, DS2 is a hydroxyl group-based 2-hydroxyl group based on the degree of substitution of a thiol group (hereinafter also referred to as "2-position thiol substitution degree"), and DS3 is a 3-position thiol-based substitution degree (hereinafter also referred to as "3-position thiol substitution degree")' DS6 is a hydroxy group-based thiol-based substitution degree (hereinafter also referred to as "6-position thiol substitution degree"). The thiol group used in the cellulose sulphate of the present invention may There may be only one type, or two or more kinds of sulfhydryl groups may be used. When two or more kinds of fluorenyl groups are used, one of them is preferably an acetamino group. If the base group is substituted based on the 2, 3, and 6 positions, The sum of these is set to DSA, and the sum of the hydroxyl groups of the 2, 3, and 6 hydroxyl groups substituted by the thiol group other than the ethyl fluorenyl group is set to DSB, and the value of DSA + DSB is 2.2. 2 to 2.90 is more preferable, and 2.40 to 2.88 is particularly preferable, and DSB is preferably 0.30 or more, and 0.7 or more is preferable. Further, more than 20% of the DSB is a 6-hydroxyl substituent, but 25% or more is a 6-hydroxyl group. The substituent is more preferably, more than 30% is further preferred, and 33% or more is 6-positioned through the base 201238740 - Γ1 / cites the 6-hydroxyl oxime of the cellulose brewing compound, and further is 〇.80 or more, especially It can be made by using these fiber sulphides to reduce the solubility of the two soils (dope). Especially in non-chlorinated organic solvents, good Loose solution can be produced, and low viscosity can be produced. And the solution which is excellent in impurities. = The cellulose which is the raw material of the fiber "can be obtained from any of the cotton fiber and the slurry." The cellulose having the carbon number of 2 or more as the cellulose halide of the present invention. The group of the aliphatic group may be an aryl group, and is not particularly limited. These examples include a group consisting of a calciner, an olefinic group, an aromatic group, a tert-ester, and the like, and may have a further substituted group. As a preferred example of these earthy groups, it can be mentioned that a propyl group, a butyl group, Sulfhydryl, hexyl decyl, fluorenyl, dodecyl fluorenyl, tridecane decyl, fourteenth yl group, 'base ten', calcined sulfonyl group, eighteen-burning base, isobutyl aryl, three-stage butyl ^ j, hexane carbonyl, oleoyl, benzylidene, naphthalenecarbonyl, cinnamyl, among them, propyl sulfonyl, butyl fluorenyl, decyl fluorenyl, octadecyl fluorene. Phenylhydrazine, naphthylcarbonyl, cinnamyl: the basic is preferably 'propionyl, butyl sulfhydryl. (Solvent) If = is used for the preparation of the dope 23 can be cited aromatic smoke (eg: stupid, stupid Etc., halogenated hydrocarbons (eg, dioxane, gas, etc.), for example, decyl alcohol, ethanol, n-propanol, n-butanol, diethylene glycol, etc.), ketone oxime t, propyl hydrazine, hydrazine Ketones, etc., esters (for example, methyl acetate, ethyl acetate, acetonitrile, etc.) and ethers (for example, tetrahydrofuran and sulfhydryl solubilized 3, etc.) 201238740 and the like. Further, in the present invention, the polymer solution or the dispersion dope obtained in the solvent means that the polymer is dissolved or dispersed in 1 to 7 hydrocarbons, preferably used.

Among these, the number of carbon atoms used is 1 to 7 dichloro----dissociation, and it is preferable to use methanol, decyl alcohol, ethanol, n-butanol or a mixture thereof. However, in order to minimize the influence on the environment, the solvent composition in the case of not using the gas-fired gas is also studied. For this purpose, the number of carbon atoms is 4 to 12, and the number of carbon atoms is A ketone of 3 to 12, a vinegar having 3 to 12 carbon atoms, and an alcohol having a carbon number of h2 are preferred. Sometimes these are mixed as appropriate. For example, a mixed solvent of methyl acetate, acetone, ethanol, or n-butanol can be given. These ethers, ketones, esters and alcohols may have a cyclic structure. Further, a compound having any one of two or more ether, ketone, ester and alcohol functional groups (i.e., 〇·, _C0_, _c〇〇j_〇H) can also be used as a solvent. Further, the details of the cellulose halide are described in paragraph [0195] of the Japanese Patent Laid-Open Publication No. 2005-104148. These descriptions can also be applied to the present invention. In addition, in the paragraphs [〇196] to [0516] of Japanese Patent Laid-Open Publication No. 2005-104148, solvents and plasticizers, deterioration inhibitors, ultraviolet absorbers (UV agents) are also used. ), optically different 42 201238740. Sex control agents,

The successive lamination co-casting can be carried out using a lamination in which a feed head is mounted. In addition, the simultaneous laminating co-current delay can be used to make the mold, and a multi-groove type casting die can also be used. The first dope containing the first polymer and the second dope containing the 21st compound which is not the first polymer are simultaneously co-cast or co-cast by the co-casting, thereby forming the casting A layered (casting surface layer) on the support side of the film, a layer (air surface layer) on the surface side of the cast film, and a laminated cast film formed of a layer (base layer) between the support body surface layer and the air surface layer. The base layer is composed of the first concentrated liquid. The air surface layer and the support surface layer are composed of the second concentrated liquid. When the first polymer and the second polymer are cellulose oxime, the total thiol substitution degree Z1 of the fluorenyl group in the first polymer is lower than the total thiol substitution degree Z2 of the fluorenyl group in the second polymer. Preferably. In particular, the total thiol substitution degree Z1 of the fluorenyl group in the first polymer satisfies the formula (1), and the total thiol substitution degree Z2 of the fluorenyl group in the second polymer satisfies the formula (2). Formula (1) 2.0 < Z1 < 2_7 Formula (2) 2.7 < Z2 From the viewpoint of delayed wavelength dispersibility, the degree of substitution XI and the carbon number of the ethyl fluorenyl group of the cellulose halide used in the first polymer are It is preferable that the total of substitution degrees Y1 of the sulfhydryl group of 3 or more satisfy the following formulas (3) and (4). In addition, XI and Y1 are established between the aforementioned Z1 of the above formula (1).

Hi /^opu? X1+Y1=Z1 relationship. Formula (3) 1.0 <X1<2,7 Formula (4) 0SY1<1,5 The degree of substitution of the ethylidene group of the cellulose halide used in the second polymer from the viewpoint of delayed wavelength dispersibility It is preferable that the total of Y2 and the substitution degree of the brewing base having 3 or more carbon atoms satisfy the following formulas (5) and (6). Further, Χ2 and Υ2 have a relationship of Χ2+Υ2=Ζ2 between Ζ2 and the above formula (2). Formula (5) 1.2 < Χ 2 < 3. 〇 Formula (6) 0SY2C1.5 The viscosity of the second dope is lower than that of the first dope. The viscosity of each dope can be determined in accordance with JIS Κ 7117. The second polymer is a cellulose halide, and the first polymer may be a polymer other than the cellulose halide. It is preferred to use a propylene resin as the second polymer. (Acrylic resin) The acryl resin further contains a methyl methacrylate resin, and a derivative of acrylate/methacrylate is known, especially acrylate/glycolate. )I things. The acryl resin is not particularly limited, but in order to obtain a film having a small photoelastic coefficient, it is composed of methyl acetoacetate methyl ketone unit % to 99 mass ° / oxime and other monomer units copolymerizable therewith 1 to 5 It is preferable that the mass % is composed. In the propylene resin, examples of the other monomer copolymerizable include an alkyl thioalkyl acrylate having an alkyl group of 2 to 18 and a carbon number of alkyl groups 44 201238740 41/^Spif propyl weiwei 8 An aromatic vinyl compound such as an unsaturated group such as an acid, a fumaric acid or an itaconic acid, or an aromatic vinyl compound such as a vinyl group or a methylbenzene group, α,p_unsaturated nitrile, maleic anhydride, maleate, i^N• substituted silk fibroimine, glutaric acid, etc., which can be used alone or in combination The above monomers are used as a copolymerization component. (4) From the perspective of the copolymer (4) age secret _ moving (four) age, =: vinegar, acrylic acid brewing, acrylic propylene vinegar, acrylic acid n-butyl vinegar, acid brewing or acrylic acid is the only one = acid § 4 pulse good, The use of Cyanide 2 can form an optical resin even in a high-temperature, high-humidity environment, and is characterized by a glycerin-containing fat or a face-molecule containing a alicyclic alkyl group. Acrylic resin is the touch. As an example of the propylene resin which forms a ring structure in the molecular main chain, a poly-t-propylene-based thermoplastic resin containing a ring-containing ring may be mentioned as a preferred embodiment thereof, and a preferred tree raft, 'and or The synthesis method is described in Japanese Patent Publication No. 6_口 1464. Further, 'there is a formula containing pentane _ as a silk component as "the best secret, _ copolymerization error or a specific synthesis method is disclosed in Japanese Patent Laid-Open Publication No. 2004-070296. The weight average molecular weight of the propylene resin It is preferably 60,000 to 4 million, 80,000 to 3 million, preferably 1 to 10,000 to 10,000. The weight average molecular weight of propylene resin can be determined by gel permeation chromatography. The method for producing the propylene resin is not particularly limited, and a known method such as polymerization, emulsion polymerization, bulk polymerization or solution polymerization in suspension 45 201238740 can be used. In the present invention, a plurality of propylene resins can be simultaneously used. The propylene resin can also contain other thermoplastic resins. In the present invention, the thermoplastic resin' has a glass transition temperature of 1 〇 (rc or more and a total light transmittance of 85% or more from the viewpoint of improving heat resistance or mechanical strength when it is mixed with the propylene resin to form a film. The performance of the propylene resin layer and the other thermoplastic resin component in the propylene resin layer is [propylene resin / (all thermoplastic resin)] χ 1 The mass ratio of bismuth is preferably from 30 to 99% by mass, preferably from 50 to 97% by mass, more preferably from 6 Å to 95% by mass. The content of the propylene resin in the propylene resin layer is 30. It is preferable that the mass % or more is sufficient to exhibit heat resistance. Examples of the other thermoplastic resin include polyethylene, polypropylene, ethylene-propylene copolymer, and poly(4-methyl-1-pentyl). Olefin polymer such as olefin; halogen-based polymer such as ethylene oxide or vinyl chloride resin; polystyrene, styrene-methyl methacrylate copolymer, styrene-acrylonitrile copolymer, acrylonitrile-butyl Styrene polymer such as olefin-styrene block copolymer; polyester such as polyethylene terephthalate, polybutylene terephthalate or polyethylene naphthalate; nylon 6, nylon 66 , nylon 61 〇 and other polyamines; polycarboxylic acid '·polycarbonate; polyphenylene ether; polyphenylene sulfide; polyether ether ketone; polyg]; polypyrene; polyphenyl ester; polyamidoximine; Polybutylene rubber, ABS resin, ASA resin, rubber polymer The rubber negative polymer is preferably a graft portion having a composition capable of being compatible with the cyclic polymer in the present invention, and rubbery polymerization is obtained from the viewpoint of improving film formation 46 201238740 = transparency. The average particle diameter of the body is preferably 00 nm or less, more preferably less than or equal to j7 〇 nm. 、, 六, and other thermoplastic resins are used in combination with the thermoplastic resin of the propylene resin: t is preferable. As such other thermoplastic resin 'It is preferable to cite two kinds of ethylene-based early-stage units and a series of ethylene-fresh units of propylene, one type of t-type silk or poly-gas, etc. These kinds of towels, acrylonitrile and ethylene-based copolymers are When the surface transition temperature is n (rc or more and the phase difference of the surface direction 蛐ΊΓ^μηη is 2 〇 nm or less, the above optical film can be easily obtained, which is preferable. As acrylonitrile in the range of 1:1 〇 to 10:1. X., Cao, and,! The first polymer is a propylene tree material. If the _first dope and the second film are stacked or co-cast, the lamination is delayed = = degree unevenness. This thickness unevenness is caused by the destabilization of the flutes 1 and * of the layer (support surface layer and air surface layer) composed of the 2 ^ dope composed of the first dope. The destabilization of the interface means that the part of the ί = liquid that forms the base layer is adjacent to the adjacent support surface layer or the air surface layer. 2 In order to avoid the instability of the interface, _ by the first! The dope and the second solution are a combination of a buffer solution flowing between the ί1 agricultural liquid and the second dope, and it is preferable to perform simultaneous lamination co-casting or sub-stacking. The buffer kurtosis is lower than the ith concentrate and the second concentrate. Further, the cushioning = liquid which is compatible with the solvent contained in each of the waves is constituted by a relatively large amount. Buffering (4) The viscosity is preferably 1 Pa•sec or more and 15 Pa•sec or less, and more preferably 1 gPa··sec or less. In addition, the viscosity of the buffer can be determined according to JIS K7117 at 201238740 41/Z8pxf. A polymer may be contained in the buffer system and the liquid contained in each dope. It is preferred as a buffer. Buffer to cite the first! The polymer or the second polymer = a compound, for example, a polymer is preferred. Any % of c of the polymer in the buffer is preferred. It is less than 5 masses. The propylene resin is used as the ith polymer, and an optical film whose optical characteristics are not easily changed by stress is efficiently produced. And humidity parenting? [Examples] (Experiments 1 to 8) Experiments 1 to 8 were carried out according to the following methods. With regard to the details of each experiment, the experiment 1 will be described in detail, and the explanations of the same portions as the experiment i will be omitted for the experiments 2 to 8, and the different portions will be explained. (Experiment 1) The formulation of the compound for preparing the dope 24 is shown below. The solid content of the composition ratio of the following composition, that is, 100 parts by mass of cellulose triacetate (degree of substitution 2.86), 1 part by mass of triphenyl phosphate (TPP), and 3 parts by mass of delustering agent (AEROSILR972) 适当. Adding to a mixed solvent consisting of the following, and stirring and dissolving to prepare a dope 24', that is, 'dichloromethane 80 parts by mass, decyl alcohol 13.5 parts by mass, 48 201238740

I Λ. I n-butanol 6.5 parts by mass. With ι ( ( ( ( ( ( ( [Triacetate] The cellulose triacetate (TAC) used in this is a residual amount of acetic acid, a Ca content of 58 ppm, a Mg content of 42 ppm, and a Fe content of 〇.5 ppm. , containing 4 〇 游离 free acetic acid and 15 Peng sulphuric acid ion. Moreover, the substitution degree of B relative to the hydrogen at position 6 is 0·9 and the 5% of the total ethyl ketone is the 6-position hydrogen. And the ketone extraction is 8% by mass, and the mass average molecular weight/number average molecular weight ratio is = the TAC yellowness index obtained by taking the second is 丨7 'haze _ brightness The TAC was synthesized from cellulose taken from cotton. The film 21 (width: 1950 mm) was produced by using the obtained dope 24 in the solution film forming apparatus shown in the drawing. Opened in the second place. In the early morning 12, the process of the concentrated liquid flow process is repeated in the order shown in Figure 8. The extension process 132, the crucible heating process 133, the surface layer formation process 134, the film drying process 135, the film cooling process 136, the stripping of the m and the support heating process 138 are performed. The moving speed V is 1 G () m / Min. In the n-th casting process (4) in the separation process 137, the strip surface at the peeling position PP_temperature 49 201238740 /ζοριι (refer to Table 1). The first solvent was measured. The temperature in the sub-cast film formation process 126 at the arrival position Dp of the content ΖΥρρ is tDPc (refer to Table i), the temperature of γ 2a, and the center of the Y direction (Table 1). In addition, the temperature in the γ direction is two. It is TDPe (the part of the reference end is l〇mm to the inside. ', ', and the γ direction from the % band 62 is two [Table 1]

(Experiment 2~8). The presence or absence of the film cooling process 136, the presence or absence of the film heating process 133, the presence or absence of the support heating process 138, the temperature Tpp of the tape surface 62a at the peeling position pp, and the solvent content ZYPP in the casting film at the peeling position PP are reached. The film 21 was formed from the dope 24 in the same manner as in Experiment 1 except that the temperatures TDPc and TDPe of the belt surface 62a at the position DP were as shown in Table 1. (Evaluation) 201238740 price. Table 2::: Fruit capacity: System 1 method is evaluated according to the following points. ,, and the prefecture of the fruit _ added to the order of each evaluation item 1. Peeling evaluation Investigate whether there is a peeling failure. 2.·· During the manufacturing process, no peeling failure occurred. In the middle of the process, a lion failure occurred. ° Bay, A is a combination, B is unqualified. 2. Evaluation of thickness unevenness The film 21 was subjected to the next step. The first, from, the following financial assessment of the financial domain 21 thickness uneven m2ill ^ 6 〇 c ^ 1 film refractive index difference for the two square factory sample film. Second, the use can make the sample poor. The device having the difference in thickness is used to measure the refractive index energy of the sample film. /x-03 FRINGEANALYZER (Fuji uses the average value as the thickness unevenness of the laminated film. The basis is as follows: m:. In addition, the thickness of the laminated film is J. The average value of the thickness of the 6-port membrane is 6. The thickness unevenness is less than 1 5% with respect to the thickness of the film B. The thickness unevenness is 15% or more and less than 8% of the thickness of the film. c. The thickness unevenness is 18% or more with respect to the thickness of the film. In the evaluation, A and B are acceptable, and C is unacceptable. In addition, in the "test 8", peeling failure occurred in the peeling evaluation, 201238740 41 /ΖδρίΙ The thickness of the film is not uniform, so it is obvious that the sound in Table 1 is also the price of the flat. Because of the money of the money, the result of the price of "8, age 3. Foaming evaluation battle von _ visual observation Whether or not the obtained flow sensitivity is blistering A. The blistering of the side portion is not confirmed. The removal is confirmed to be _ 'but only limited by the slitter 36, so there is no problem as a film for the product. Foaming was confirmed in some parts. M and B were acceptable, and C was unacceptable. Experiments were carried out as follows: 22, 51~52. (Experiment 21) Outside the interval by the roller - (refer to the upper and the arrival position Dp, the red is 〇. In addition to the same * except the nip roller 202 (refer to Figure 22) 2〇 〇mm. The dope 24 is made into a film 2 interval (experiment 51). In addition to the setting 'except setting _ Kun (refer to Fig. 22) R is made of the dope 24 to make the film 21. The interval δ χ is 〇, in the above experiment 5, except that the nip roll 202 (refer to Fig. 22) was set, the film 21 was made from the dope 24 as in the experiment 2. Between = 52 201238740. 200 mm ° In the experiments 21 to 22, 51 to 52, the tape was measured. The floating amount j is determined. The floating amount j is determined by the following criteria. 'A: The floating amount J is less than 50 μm. Β The floating amount J is 50 μm or more and less than i〇 (^m. C. float The amount J is ι〇〇μπι or less and less than 2 μm η. D : The amount of float J is 200 μm or more. Further, the amount of float of the belt is measured as follows. First, the belt wound on the roller 6 such as ～66C 62 is applied with a moving tension (60 N/mm2) to circulate in the moving path. Next, in the winding area LA, the interval ACL of the roller 6^ and the inner portion 62b is measured. And, the interval in the X direction and the γ direction is determined. A The maximum value of CL is set to the amount of float of the tape j. [Table 2]

The results are shown together with respect to experiment 2, experiment 21 experiment 22 experiment 2 experiment 51 experiment 52 experiment 5 in Table 2, and the evaluation results of the floating amount J of experiments 21 to 22, 51 to 52 5 . BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing an outline of a solution film forming apparatus. Fig. 2 is a side view showing an outline of a first casting unit. Fig. 3 is a perspective view showing an outline of a surface layer forming apparatus. Figure 4 is a view showing the outline of the surface layer forming apparatus taken along line _^ 53 201238740.

Cross-sectional view of Hi / ΖΟρίΙ Fig. 5 is a cross-sectional view taken along the line V_V of Fig. 4 showing an outline of the surface layer forming apparatus. Fig. 6 is a perspective view showing an outline of a first branch heating device. Fig. 7 shows the first support body force. A summary of the thermal device along the line VII-VII. M ^ is intended to represent the first casting process and the solution film forming method. Fig. 9 is a cross-sectional view showing the cast film after formation. Fig. 10 is a cross-sectional view showing an outline of a cast film after a film heating process. Fig. 11 is a cross-sectional view showing an outline of a cast film after a surface layer forming process. Fig. 12 is a cross-sectional view showing an outline of a cast film after a film drying process. Fig. 13 is a side elevational view showing the outline of a main part of the second casting unit. Fig. 14 is a side view showing an outline of a third casting unit. Fig. 15 is a side view showing an outline of a main part of a fourth casting unit. Fig. 16 is a side view showing an outline of a main part of a fifth casting unit. Fig. 17 is a side view showing an outline of a sixth casting unit. Figure W is a side view showing an outline of a seventh casting unit. 54 X201238740 Sectional view of the outline of the heating of the support. The system diagram of the outline and the outline of the 2k film formation process and the table. Winning the table sickle / cloud map. Fig. 2 is a side view showing the outline of the single-rolling and single-turning portion of the county material. Fig. 22 is a view showing the supporting body. The outline of the main part of the arrangement Fig. 23 is a plan view showing an outline set at the surface of the belt. The winding area, the arrival position, and the Fig. 24 show the ninth casting unit diagram. Side view of the main part of Fig. 25 is a cross-sectional view showing the support body heating XXV-XXV line. [Outline of the main components] FIG. 24: Solution of film forming apparatus 12, 165: casting unit 13: drying unit 14: winding unit 21: film 22: polymer 23: solvent 24: dope 25: Wet film 35: clip tenter 55 201238740, hi_ /zopii 35a: sleeve 35b: clip 35c: dry air feeder 36: slitter 37: drying chamber 38: cooling chamber 40: transfer portions 41, 45, 66a, 66b, 66c, 66f, 66g, 66x, 66y, 66z: Roller 46: adsorption recovery device 51: core 52: press roll 54: take-up chamber 55: film roll 57: knurling device 60: casting die 61 : cast film 61 a : film surface 61 x : surface layer 61 y : wet layer 62 : endless belt 62 a : belt surface 62 b : belt inner 63 : surface layer forming device 56 201238740l 64 · film drying device 65 : peeling roller 66 : belt movement Mechanisms 66d and 66e: Supporting Kombu 66m, 99: Motor 66r: Moving path 71: First sealing member 71a: Windshield 71b: Labyrinth seal 72: Second sealing member 73: Third sealing member 74: 4th Sealing member 75: casting sleeve 75a: casting chamber 75b: film drying chamber 75c: peeling chamber 75d: support heating chamber 75: outlet 77: Pressure chamber 80: surface layer forming wind 81: intake ducts 81a, 85a: surface 82: outer cover 82a: guide surface 201238740. /zopn 83: pre-intake nozzle/intake nozzle 83a: pre-inlet/intake port 83b: Inner surface 84: Air register 85: Side air deflector 86: Air path 88: Front film dryer 89: Rear film dryer 90: Front dry air 91: Surface side air blowers 92, 96: Inside side air blower 94: Rear Dry air 95: Parallel air blower 95a: Parallel exhaust duct 95b: Parallel intake duct 110: Heating air 111, 141, 168: Support heating device 112: Surface side heaters 112a, 113a: Intake duct 113: Inside side Heater 113i: exhaust port 112〇, 113〇: intake port 114: heating air conditioner 121, 122, 123: roller thermostat 58 20123874 (^125: solution film forming method 126: cast film forming process 127 : Wet film drying process 131: dope flow down process 132: casting process 133: film heating process 134: surface layer forming process 135: film drying process 135a: front film drying process 135b: post film drying process 136: film cooling process 137: Stripping Process 138: Support Heating Process 142: Surface Heating Xingkun 143: Inside Heating Roller 144 : Roller temperature regulator 148 : Cooling unit 149 : Liquid supply device 150 : Drying wind 151 : Evaporating device 161 : Cast film forming process 162 : Solution film forming method 201 : Support holding device 202 : Pressing roll 59 201238740 m / Zspif 210, 211: wind shield CA: casting zone CW: casting width CZ: casting zone DP: arrival position LA: winding zone LB: bead length NP: suppression position PP: peeling position TP1, TP2: position X, Y: direction Θ1: angle

Claims (1)

201238740 VII. Patent application garden: 1. A method for forming a cast film, which is a method for forming a cast film on a moving support, wherein the moving support reaches the arrival position and peels off through the concentrated liquid flowing down The method for forming the cast film is characterized in that the method for forming the cast film includes the steps of: (A) flowing a dope to the surface of the moving support, wherein the dope contains a polymer and a solvent; (B) evaporating the solvent from the casting film formed on the surface of the moving support, wherein the casting film is composed of the concentrated liquid flowing down; (C) cooling the casting film to be independently transferable a state in which the cooling is performed after the step B; (D) peeling off the casting film after the step c from the moving support; (E) heating the moving support after the step d before the next step The cast film before the preceding step of the heat transfer to the moving support in the foregoing step E; and the movement and the inner support structure, the front direction: the foregoing two directions The inner side of the moving branch body is connected to the support member of the other j, and the casting film is moved as described above. The method for forming the casting film described in the patent scope h, 201238740, HI /ζοριι' is a part supporting member _, The method for forming the inside of the support film is as follows: the arrival position of the flow in the moving branch body is two: the support body is repeatedly passed through the discharged concentrated liquid to the peeling position of the special cast film. The mode moves, (5) moving the dope to the foregoing as follows: a compound and a solvent; the following 'the above dope contains poly(I) evaporating the aforementioned solvent from the aforementioned moving support, the aforementioned cast film is formed by the film (7) The film is cooled to the cold portion after the aforementioned step I; the stomach is conveyed in a sad manner, and the forward flow (L) of the film (1) after the step of moving away from the aforementioned step is before the next aforementioned step I. In the width direction of the dragon, the following method is used. In the above-mentioned step B, the hot-heating-discharging-drying-moving support is used to describe the cast film. The film is stretched and dried, and the film is moved by the flowing dope to reach the far-moving mobile support body to move away from the position, which is characterized by, and peeling off the cast film The stripping step: · the fan; the liquid film forming method has a solution such as 62 201238740, (A) flowing the dope to the surface of the moving branch body containing the polymer and the solvent; (B) forming the moving support from the foregoing The table evaporates the solvent, and the 'cast film is cooled by the flow of the dense film (C) to the independent flow. The cooling is performed after the step B; the sorrow is extended (9) The flow (8) after the above-mentioned c-step is peeled off from the moving read body, and the moving support is in front of the next B step (4); (F) after the township is used in the above-mentioned E-step; 4 people are heated, heating Before the next-shun step:; ^ The sub-mosaic support of the Qiu Xin is the cast film; the moving support body, the above-mentioned holdings at the front end of the structure support the above-mentioned arrival position 2 to describe the surface The surface of the aforementioned moving support, Yu Khan In the sin direction, one end of the inner side of the two outer movable supports to the other and the support members support the movement (N) to remove the solvent from the moving support.滞 amp amp 钱 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发 蒸发The support body moves in a manner of repetitively moving away from the position, and is characterized in that the stripping step is carried out from the preceding casting crucible: _ the method is provided as 63 201238740, the liquid mixture flows to the moving branch phase, and the m liquid contains poly (1) from the forming (four) filament The surface evaporation of the ruthenium support is cooled by the previous state == the cooling transfer state, the front film 〇〇 from the aforementioned moving branch (4) _ the aforementioned flow (L) after the aforementioned step is in the next step of the aforementioned moving body In the center of the width direction ^ after the hot money K step (Μ) is used before the step of drying the film in the above-mentioned L step; the solvent is obtained = the support body _ before the bank is moved before the evaporation 'There are as follows: dry part, peeling part, the above-mentioned reaching part; = reaching part, casting part, film dry, compound and solvent, the above-mentioned casting two agricultural liquids' the above-mentioned concentrated liquid, the above-mentioned cast film =: liquid = floor Arrival section cutting unit 'cutting position (four) material reading movement The support stripping unit cut unit cleaves the moving branch 64 located in the front-outlet portion. The 201238740 film cooling unit moves the support member away from the film drying unit and reaches the state of being conveyed until reaching the peeling portion; The film is cooled to a stand-alone heating unit, and the front, +, j, ... before leaving the drying portion, and leaving the peeling portion and reaching the film heating unit, and supporting the body; heating reaches the film drying continuation plus The two sides of the hot surface obtained by the fresh element; 槿j: as described above, the film is supported by the above-mentioned moving branch, which has the above-mentioned concentrated liquid to the lower position of the supporting portion of the reaching portion. The means for forming the film according to the sixth aspect of the patent application, the member is a material of the (4) material member domain roll, and the above-mentioned kneading support structure 12^_ forming device, which has the following features : moving the support body, which sequentially circulates through the soil drying portion and the peeling portion, and reaches the extension portion in the reaching portion: the film contains a polymer and a solvent, the casting portion is formed by a casting film, and the film drying portion is capped The formation of the liquid _ part of the stripping of the cast film; I money to describe the solvent, the support reach unit, the support of the moving branch located in the aforementioned reach 65 201238740 support Lin Chuan early 7 " 'support is located in the aforementioned _ 部···································································································· And adding the above-mentioned secret portion to the center portion in the width direction of the moving support body, and to the above-mentioned cast film before heating to the hot portion obtained by the above-mentioned mixed heating material. 66