WO2018062028A1 - 熱可塑性樹脂フィルムの製造方法 - Google Patents

熱可塑性樹脂フィルムの製造方法 Download PDF

Info

Publication number
WO2018062028A1
WO2018062028A1 PCT/JP2017/034263 JP2017034263W WO2018062028A1 WO 2018062028 A1 WO2018062028 A1 WO 2018062028A1 JP 2017034263 W JP2017034263 W JP 2017034263W WO 2018062028 A1 WO2018062028 A1 WO 2018062028A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
die
resin
molten resin
thermoplastic resin
Prior art date
Application number
PCT/JP2017/034263
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
洋亮 中川
山田　晃
久也 青木
Original Assignee
富士フイルム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2018542514A priority Critical patent/JP6671495B2/ja
Publication of WO2018062028A1 publication Critical patent/WO2018062028A1/ja

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating

Definitions

  • the present invention relates to a method for producing a thermoplastic resin film.
  • thermoplastic resin films are used in various applications such as optical films and solar cell back surface protective films.
  • the thermoplastic resin film include a cellulose resin film such as a cellulose acylate film, an acrylic resin film, a polycarbonate film, and a cyclic olefin resin film.
  • These thermoplastic resin films are obtained by melting a raw material resin with an extruder and extruding it into a die (for example, a T die), discharging the extruded resin from the die as a film-like molten resin (hereinafter referred to as “solidification”). It is also referred to as “melt extrusion method”).
  • JP-A-2000-280315 or JP-A-2000-025089 discloses a die device and a lip lower surface cleaning device used in a conventional method for producing a resin extruded product or a thermoplastic resin film by a melt extrusion method.
  • the thing of description is mentioned.
  • Japanese Patent Application Laid-Open No. 2000-280315 describes an extruded product made of a cyclic olefin resin having a surface roughness of 0.3 ⁇ m or less in terms of the maximum roughness Rt.
  • Japanese Patent Application Laid-Open No. 2000-025089 describes a lip lower surface cleaning device for a die device, characterized in that a spear removing body is formed on the lower surface of a grouper rod rod.
  • the problem to be solved by an embodiment of the present invention is to provide a method for producing a thermoplastic resin film in which generation of a die line is suppressed when a resin film is produced by a melt extrusion method.
  • the above-mentioned subject is achieved by the following means. ⁇ 1>
  • the film-shaped molten resin is discharged from the die with a die swell ratio of 1.3 or less, and the discharge direction of the film-shaped molten resin from the die discharge port and the film surface direction of the film-shaped molten resin at the die discharge port
  • the film-shaped molten resin is brought into contact with the cooling roll while regulating the maximum angle ⁇ to 45 ° or less, and after the start of taking-off, the film-like molten resin is further discharged from the die, And a step of cooling and winding the discharged film-like molten resin while being taken up by the cooling roll.
  • thermoplastic resin film The method for producing a thermoplastic resin film according to ⁇ 1>, wherein the regulation is performed by bringing a regulation plate disposed between the die and the cooling roll into contact with the film-shaped molten resin. . ⁇ 4> The air is generated by an air blowing unit disposed between the die and the cooling roll, and the air is in contact with the film-shaped molten resin, and the regulation is performed. ⁇ 1> Manufacturing method of thermoplastic resin film.
  • ⁇ 5> In any one of ⁇ 1> to ⁇ 4>, in the step of cooling and winding, a touch roll that presses the cooling roll is used, and a resin passes between the cooling roll and the touch roll.
  • the oxygen concentration at the die discharge port is set to 1% or less from when the molten resin is extruded to the die until the film-like molten resin starts to be discharged from the die.
  • ⁇ 7> The method for producing a thermoplastic resin film according to any one of ⁇ 1> to ⁇ 6>, wherein the surface energy of the lip portion of the die is 60 mN / m or less.
  • thermoplastic resin film according to any one of ⁇ 1> to ⁇ 7> wherein the bright line width of the edge portion on the discharge port side of the lip portion of the die is 10 ⁇ m or less.
  • the angle formed between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin is 45.
  • thermoplastic resin film as described in ⁇ 9> including the process made small.
  • thermoplastic resin film in which the generation of die lines is suppressed when a resin film is produced by a melt extrusion method.
  • thermoplastic resin film 10 It is a schematic sectional drawing which shows an example of the cross section of the thickness direction of the thermoplastic resin film 10 It is a schematic perspective view which shows an example of the thermoplastic resin film 10 in which the dent D (die line) has generate
  • FIG. It is the schematic for demonstrating the place which has started taking over. It is the schematic which shows an example of the whole structure of a film forming apparatus. It is the cross-sectional schematic for demonstrating the state of resin near the discharge outlet of die
  • to representing a numerical range means a range including numerical values described as a lower limit value and an upper limit value before and after that, and when units are attached only to the upper limit value or the lower limit value, Means the same unit throughout the numerical range.
  • a method for producing a thermoplastic resin film according to the present disclosure includes discharging a film-shaped molten resin from a die with a die swell ratio of 1.3 or less, and a discharge direction of the film-shaped molten resin from the die discharge port at the die discharge port; The film-shaped molten resin is brought into contact with the cooling roll while the maximum angle ⁇ formed with the film surface direction of the film-shaped molten resin is regulated to 45 ° or less (hereinafter also referred to as “take-off start process”). ) And after the start of take-off, the film-like molten resin is further discharged from the die, and the discharged film-like molten resin is cooled and taken up by the cooling roll (hereinafter referred to as “film manufacturing process”). And).
  • FIG. 1 is a schematic cross-sectional view showing an example of a cross section in the thickness direction of the thermoplastic resin film 10 and shows a generated dent D.
  • FIG. 2 is a schematic perspective view showing an example of the thermoplastic resin film 10 in which a dent D (die line) is generated in a stripe shape in the direction of the arrow 20.
  • the present inventors have found that the formation of the dents D on the film surface is caused by the deterioration of the resin (hereinafter also referred to as “meani”) on the lip portion of the die, thereby smoothing the lip portion. It was thought that this was caused by the fact that the resin was discharged from the die in a state where the resin was recessed in a streak shape. Further, usually, the production of a thermoplastic resin film by a melt extrusion method using a die is performed by discharging the resin from the die as a film-shaped molten resin in a state where the die and the cooling roll are separated from each other. This is started by starting taking-up of the film-shaped molten resin while pulling by hand. FIG.
  • FIG. 3 is a schematic diagram for explaining where the take-off is started, and the film-like molten resin 30 discharged through the lip portion 32 of the die 12 is drawn by the hand 14 and the wrinkles of the resin are extended.
  • Reference numeral 32 indicates a lip portion of the die.
  • Japanese Patent Application Laid-Open No. 2000-280315 As a method for suppressing such adhesion of, for example, Japanese Patent Application Laid-Open No. 2000-280315, the use of tungsten carbide or the like as the material of the lip portion of the die improves the releasability of the resin and the occurrence of A method of suppressing this is described. Further, as a method for removing generated spears, Japanese Patent Application Laid-Open No. 2000-025089 describes a lip lower surface cleaning device for a die device, in which an eye sprinkle removing body is formed on the bottom surface of a grouper rod rod. Has been. However, according to the method described in Japanese Patent Application Laid-Open No.
  • the present inventors have found that the production of a die line is suppressed according to the method for producing a thermoplastic resin film according to the present disclosure.
  • the detailed mechanism by which the generation of die lines is suppressed is unknown, it is considered as follows.
  • the die swell ratio to 1.3 or less, the thickness of the film-shaped molten resin discharged from the die is reduced, so that the film-shaped molten resin is prevented from adhering to the lip portion of the die.
  • the generation of die lines is suppressed.
  • the film-shaped molten resin is cooled while the maximum angle ⁇ between the film discharge direction of the film-shaped molten resin from the die discharge port and the film surface direction of the film-shaped molten resin is regulated to 45 ° or less.
  • the “film-like molten resin” may be a resin component alone or a resin composition containing an additive.
  • the film-shaped molten resin is referred to as “resin”
  • the thermoplastic resin film is referred to as “film”.
  • FIG. 4 is a schematic diagram illustrating an example of the overall configuration of a film forming apparatus for carrying out the method for manufacturing a thermoplastic resin film according to the present disclosure.
  • the film forming apparatus 110 shown in FIG. 4 is connected to the hopper 112 into which a thermoplastic resin as a raw material resin is charged, the extruder 114 that melts the thermoplastic resin supplied from the hopper 112, and the extruder 114 through a pipe 140.
  • Contact rolls touch rolls
  • a peeling roll for peeling the thermoplastic resin film 100 from the last third cooling roll 126 and a winder for winding the cooled film are provided.
  • the extruder 114, the gear pump 116, the filter 118, and the die 120 are connected by a pipe 140, respectively.
  • the film forming apparatus illustrated in FIG. 4 is merely an example of a film forming apparatus used in the method for manufacturing a thermoplastic resin film according to the present disclosure, and the method for manufacturing a thermoplastic resin film according to the present disclosure is limited to this. Alternatively, other known film forming apparatuses can be used.
  • the raw material resin used for the production of the film-like molten resin is not particularly limited as long as it is a thermoplastic resin, and may be selected according to the use of the film to be produced.
  • cyclic olefin resin, acrylic resin, polycarbonate resin, etc. are mentioned.
  • a resin that generally has a high melt viscosity and is easily oxidized such as a cyclic olefin resin, it is considered that a tendency to occur.
  • generation of scouring is suppressed and generation of die lines is suppressed, so that it is particularly useful when these resins are used. It is done.
  • the cyclic olefin resin is a polymer resin having a cyclic olefin structure
  • examples of the polymer resin having a cyclic olefin structure include (1) a norbornene-based polymer, (2) a monocyclic cyclic olefin polymer, ( 3) Polymers of cyclic conjugated dienes, (4) vinyl alicyclic hydrocarbon polymers, and hydrides of (1) to (4).
  • an addition (co) polymer cyclic polyolefin containing at least one structural unit represented by the following general formula (II) and, if necessary, at least one repeating unit represented by the general formula (I) are further included.
  • addition (co) polymer cyclic polyolefins Moreover, a ring-opening (co) polymer containing at least one structural unit represented by the general formula (III) can also be suitably used.
  • m represents an integer of 0 to 4
  • R 1 to R 6 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms
  • X 1 to X 3 and Y 1 to Y 3 are each independently a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms, a halogen atom, a hydrocarbon group having 1 to 10 carbon atoms substituted with a halogen atom, — (CH 2 ) n COOR 11 , — (CH 2 ) n OCOR 12 , — (CH 2 ) n NCO, — (CH 2 ) n NO 2 , — (CH 2 ) n CN, — (CH 2 ) n CONR 13 R 14 , — (CH 2 ) n NR 13 R 14 , — (CH 2 ) n OZ, — (CH 2 ) n W, or X 1 and Y 1 ,
  • the thickness direction retardation (Rth) of the optical film is increased, and the in-plane letter is increased.
  • the expression of the foundation (Re) can be increased.
  • a film having a high Re developability can increase the Re value by stretching in the film forming process.
  • Norbornene-based addition (co) polymers are disclosed in JP-A-10-7732, JP 2002-504184, US 2004/229157, or International Publication No. 2004/070463.
  • the norbornene-based addition (co) polymer is obtained by addition polymerization of norbornene-based polycyclic unsaturated compounds.
  • This norbornene-based addition (co) polymer is commercially available from Mitsui Chemicals, Inc.
  • Apel registered trademark
  • glass transition temperatures such as APL8008T (Tg: 70 ° C.), APL6013T ( Grades such as Tg: 125 ° C.) or APL6015T (Tg: 145 ° C.).
  • Pellets such as TOPAS 8007, 6013 and 6015 are commercially available from Polyplastics.
  • Appear 3000 is commercially available from Ferrania.
  • Norbornene-based polymer hydrides are disclosed in JP-A-1-240517, JP-A-7-196736, JP-A-60-26024, JP-A-62-19807, JP-A-2003-159767, or JP-A-2004-309799. As disclosed in various publications such as No. 1, etc., it is prepared by addition polymerization or metathesis ring-opening polymerization of a polycyclic unsaturated compound and then hydrogenation.
  • R 5 to R 6 are preferably a hydrogen atom or a methyl group
  • X 3 and Y 3 are a hydrogen atom, a chlorine atom, and —COOCH 3 are Preferably, other groups are appropriately selected.
  • Norbornene-based resins are commercially available from JSR Corporation under the trade name Arton (registered trademark) G or Arton F, and from Zeon Corporation, Zeonor (registered trademark) ZF14, ZF16, ZEONEX. (Zeonex (registered trademark) 250 or ZEONEX 280 are commercially available, and these can be used.
  • thermoplastic resin film according to the present disclosure, various additives (for example, deterioration inhibitors, ultraviolet inhibitors, retardation (optical anisotropy) regulators) according to the use of the film to be produced, Fine particles, exfoliation accelerators, infrared absorbers, etc.), which may be solid or oily.
  • additives for example, deterioration inhibitors, ultraviolet inhibitors, retardation (optical anisotropy) regulators
  • Fine particles fine particles, exfoliation accelerators, infrared absorbers, etc.
  • thermoplastic resin as the raw material resin and the additive added as necessary are preferably mixed and pelletized prior to melt film formation. It is preferable to dry the thermoplastic resin and the additive in advance for pelletization.
  • a drying method for example, a method of heating at 90 ° C. for 8 hours or more in a heating furnace can be used, but not limited thereto.
  • the heating temperature and heating time during drying may be selected in consideration of the glass transition temperature Tg or melting point of the resin.
  • Drying can be substituted by using, for example, a vented extruder for pelletizing the thermoplastic resin.
  • the additive can also be charged from a raw material charging port or a vent port in the middle of the extruder.
  • the size of the pellet is, for example, preferably a cross-sectional area of 1 mm 2 to 300 mm 2 and a length of 1 mm to 30 mm, more preferably a cross-sectional area of 2 mm 2 to 100 mm 2 and a length of 1.5 mm to 10 mm.
  • the method for drying the pellet is often dried using a dehumidified air dryer, but is not particularly limited as long as the desired moisture content can be obtained. It is preferable to carry out efficiently by using means such as heating, air blowing, decompression and stirring alone or in combination, and it is preferable that the drying hopper has a heat insulating structure.
  • the drying temperature of the pellets is preferably 0 to 200 ° C, more preferably 40 to 180 ° C, and particularly preferably 60 to 150 ° C.
  • the water content of the thermoplastic resin used as the raw material resin is preferably 1.0% by mass or less, more preferably 0.1% by mass or less, and particularly preferably 0.01% by mass or less.
  • the raw material resin (pellet) described above is supplied to the hopper 112 and supplied to the extruder 114.
  • a known extruder can be used, and examples thereof include a screw type single screw extruder such as full flight, Maddock, and Dalmage, and a twin screw extruder of the same direction or different direction. . Examples thereof include those described in JP2009-154518A and JP2008-194556A.
  • gear pump In order to improve the thickness accuracy of the film, it is important to keep fluctuations in the discharge amount low. It is preferable to provide a gear pump 116 between the extruder 114 and the die 120 and supply a certain amount of molten resin from the gear pump 116.
  • the gear pump is accommodated in a state in which a pair of gears composed of a drive gear and a driven gear are engaged with each other. Resin is sucked into the cavity, and a certain amount of resin is discharged from a discharge port also formed in the housing.
  • a method of suppressing the fluctuation of the pressure before the gear pump by changing the rotational speed of the screw can be used.
  • a high-precision gear pump using three or more gears is also effective.
  • the filter 118 In order to prevent foreign matters from being mixed with higher accuracy, it is preferable to provide the filter 118 after passing through the gear pump 116. As the filter 118, it is preferable to provide a filtration device incorporating a so-called leaf type disk filter. Filtration can be performed by providing one filtration section, or multistage filtration performed by providing a plurality of places.
  • the filtration accuracy of the filter medium is preferably high, but the filtration accuracy is preferably 15 ⁇ m to 3 ⁇ m, more preferably 10 ⁇ m to 3 ⁇ m, because of the pressure resistance of the filter medium and the increase in filtration pressure due to clogging of the filter medium.
  • the type of filter medium is preferably a steel material because it is used under high temperature and high pressure.
  • steel materials stainless steel, steel, etc. are particularly preferable, and stainless steel is particularly preferable in terms of corrosion.
  • a sintered filter medium formed by sintering metal long fibers or metal powder can be used, and the sintered filter medium is preferable from the viewpoint of filtration accuracy and filter life.
  • the molten resin (melt) continuously sent to the die 120 through the extruder 114, the gear pump 116, and the filter 118 is melt-extruded from the die 120 into a film.
  • a fish tail die or a hanger coat die may be used in addition to a commonly used T die.
  • the die relating to the method for producing a thermoplastic resin according to the present disclosure is not particularly limited, and those known in the field of the method for producing a thermoplastic resin film can be used. Examples thereof include dies described in Japanese Patent Application Laid-Open No. 2009-154518 and Japanese Patent Application Laid-Open No. 2008-194556.
  • a static mixer for improving the uniformity of the resin temperature may be placed immediately before the die 120.
  • the die is one of the equipment that affects the thickness accuracy of the film, and a die that can control the thickness with high accuracy is preferable.
  • the thickness can be adjusted at intervals of 40 mm to 50 mm, but a die of a type capable of adjusting the film thickness at intervals of 35 mm or less, more preferably at intervals of 25 mm or less is preferable.
  • An automatic thickness adjustment die that measures the thickness of the downstream film, calculates the thickness deviation, and feeds back the result to the thickness adjustment of the die is also effective in reducing the thickness fluctuation in long-term continuous production.
  • Single-layer film forming equipment with low equipment costs is generally used for film production, but in some cases it is also possible to produce films with two or more types of structures using a multilayer film forming apparatus with a functional layer provided on the outer layer. It is.
  • the functional layer is preferably thinly laminated on the surface layer, but the layer ratio is not particularly limited.
  • the surface energy of the lip portion of the die used in the method for producing a thermoplastic resin film according to the present disclosure is preferably 60 mN / m or less, and preferably 50 mN / m or less from the viewpoint of suppressing the occurrence of die lines. Preferably, it is 40 mN / m or less.
  • the lower limit is not particularly limited, and may be 0 mN / m or more. If the surface energy of the lip portion of the die is within the above range, it is considered that the resin repellency at the lip portion of the die is excellent and the occurrence of scum is suppressed, so that the generation of the die line is further suppressed.
  • the surface energy of the lip portion of the die As the surface energy of the lip portion of the die, a value calculated by using the Fowkes-Owens equation from the contact angle with water and methylene iodide was used.
  • the contact angle is measured using a contact angle meter CA-X manufactured by Kyowa Interface Science Co., Ltd.
  • the surface energy of the lip portion can be achieved, for example, by using a material that forms the lip portion as a material such as hard chrome plating, tungsten carbide, diamond-like carbon, or ultra chrome.
  • the bright line width of the edge part on the discharge port side of the lip part of the die used in the method for producing a thermoplastic resin film according to the present disclosure is preferably 10 ⁇ m or less, and preferably 7 ⁇ m or less from the viewpoint of suppressing the generation of the die line. More preferably, it is 5 ⁇ m or less.
  • the lower limit of the bright line width is not particularly limited, but is preferably 1 ⁇ m or more. As the bright line width becomes smaller, it becomes difficult for the resin to adhere to the lip portion.
  • the film-like molten resin discharged from the die is cooled and solidified on a cooling roll to obtain a film.
  • the film thickness of the film can be obtained by heating the film-shaped molten resin with a far-infrared heater before the film-shaped molten resin comes into contact with the cooling roll, so that the leveling effect is exhibited on the drum and the surface thereof becomes substantially uniform. Distribution and die line can be reduced. It is preferable to increase the adhesion between the cooling roll and the melt-extruded sheet by using an electrostatic application method, an air knife method, an air chamber method, a vacuum nozzle method, a touch roll method, or the like on the cooling roll. It is preferable to use a roll method.
  • the touch roll method is a method of arranging a touch roll on a cooling roll and shaping the film surface.
  • the touch roll is preferably a roll having elasticity instead of a normal roll having high rigidity.
  • the temperature of the touch roll is more than Tg ⁇ 10 ° C. of the resin and preferably Tg + 30 ° C. or less of the resin, more preferably Tg ⁇ 7 ° C. of the resin or more and Tg + 20 ° C. or less of the resin, more preferably Tg ⁇ 5 ° C. or more of the resin. Tg + 10 ° C. or lower.
  • the temperature of the cooling roll is preferably in the same temperature range.
  • touch roll for example, touch rolls described in JP-A-11-314263 and JP-A-11-235747 can be used.
  • the touch roll is arranged in contact with the first cooling roll on the most upstream side (the one closer to the die) in the take-out start process described later.
  • the touch roll is arranged in contact with the first cooling roll on the most upstream side (the one closer to the die) in the take-out start process described later.
  • the diameter of each roll is preferably 50 mm to 5000 mm, more preferably 100 mm to 2000 mm, and still more preferably 150 mm to 1000 mm.
  • the distance between adjacent rolls is preferably 0.3 mm to 300 mm between the faces, more preferably 1 mm to 100 mm, and still more preferably 3 mm to 30 mm.
  • the line speed on the most upstream side of the cooling roll is preferably 20 m / min or more and 70 m / min or less.
  • the thickness of the unstretched film produced by the method for producing a thermoplastic resin film according to the present disclosure may be determined according to the use. For example, when used as an optical film, from the viewpoint of mechanical strength and light transmittance. 20 ⁇ m to 250 ⁇ m is preferable, more preferably 25 ⁇ m to 200 ⁇ m, and still more preferably 30 ⁇ m to 180 ⁇ m.
  • the take-out start step in the present disclosure is a step in which, for example, the discharge of the film-shaped molten resin from the die is started in a state where the die and the cooling roll are separated, and the discharged film-shaped molten resin is brought into contact with the cooling roll. After the take-start process, the production of the thermoplastic film is started by the above-described method.
  • the film-shaped molten resin is discharged from the die with a die swell ratio of 1.3 or less.
  • the method for discharging the film-shaped molten resin from the die is as described above.
  • the die swell ratio is preferably 1.2 or less, and more preferably 1.1 or less.
  • the lower limit of the die swell ratio is not particularly limited and may be 1 or more.
  • the die swell ratio is the ratio of the resin thickness immediately after discharge to the resin thickness at the discharge port inside the die (the thickness of the resin immediately after discharge / the thickness of the resin at the discharge port inside the die).
  • FIG. 5 is a schematic cross-sectional view for explaining the state of the resin near the discharge port of the die during resin discharge.
  • FIG. 5 is a sectional view of the resin in the thickness direction.
  • the ratio of the resin thickness 36 immediately after discharge to the resin thickness 34 at the discharge port 40 inside the discharge port die is , Die swell ratio. If the die swell ratio is 1.3 or less, the contact area between the lip part 32 of the die 12 and the film-like molten resin 30 and the pressure at the time of contact are reduced, so that the occurrence of mains can be suppressed and the generation of die lines can be suppressed. It is thought to be suppressed.
  • the die swell ratio is calculated from the resin thickness at the discharge port inside the die, which is a unique value for the die, and the thickness of the resin immediately after discharge measured by photographing the discharge port and analyzing the image during resin discharge. Is done. Further, the die swell ratio can be lowered by increasing the opening degree (lip opening degree) of the lip portion in the die, the temperature at which the resin is melted, and decreasing the flow rate of the resin. The opening degree of the lip portion, the temperature at which the resin is melted, and the flow rate of the resin may be set so that the die swell ratio is 1.3 or less depending on the type of resin, the melt viscosity, and the like.
  • the opening degree of the lip portion is preferably 1.0 to 25 times the thickness of the resin film to be produced, more preferably 3.0 to 20 times, and further preferably 5.0 to 15 times.
  • the temperature at which the resin is melted is preferably 100 ° C. to 400 ° C., more preferably 150 ° C. to 350 ° C., and even more preferably 200 ° C. to 300 ° C.
  • the flow rate of the resin is preferably 1 mm / s to 30 mm / s, more preferably 2 mm / s to 20 mm / s, still more preferably 3 mm / s to 10 mm / s.
  • the maximum angle ⁇ formed by the discharge direction of the film-shaped molten resin from the die discharge port and the film surface direction of the film-shaped molten resin at the die discharge port is 45 ° or less.
  • the film-shaped molten resin is brought into contact with the cooling roll while being regulated. The regulation may be performed when the film-shaped molten resin is brought into contact with the cooling roll.
  • the maximum angle ⁇ is preferably 30 ° or less, and more preferably 20 ° or less.
  • the lower limit of the maximum angle ⁇ is not particularly limited, and may be 0 ° or more.
  • the regulation is described above after discharging the film-shaped molten resin from the die. It is preferable to continue from the time before the film-shaped molten resin is pulled by hand until the time when the film-shaped molten resin is brought into contact with the cooling roll. That is, after the start of the regulation, it is preferable that the film-shaped molten resin is pulled by hand and brought into contact with the cooling roll.
  • the discharge direction of the film-like molten resin from the die discharge port is determined by the shape of the die discharge port, the shape of the flow path in the die, or how the pressure is applied to the resin, etc.
  • the said direction is not specifically limited, In a film forming apparatus, in order to suppress the contact of the resin to the lip
  • the film surface direction of the film-shaped molten resin refers to the direction of the film surface of the resin actually formed into a film shape.
  • the maximum angle ⁇ formed by the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin is the discharge port when using an auxiliary roll or a restriction plate, which will be described later, as the restricting means. It is calculated as the tangential direction of the end portion of the auxiliary roll or restriction plate passing through the discharge port from the position with the auxiliary roll or restriction plate. Further, when wind is used as the regulating means, the calculation is performed by photographing the resin discharge from the resin film surface direction and determining the position of the film surface from the image.
  • FIG. 6 is a schematic diagram showing a positional relationship when the die 12 and the film-shaped molten resin 30 at the time of ejection are observed from the film surface direction of the film-shaped molten resin 30 (side surface of the die).
  • the angle ⁇ formed by the discharge direction 42 of the film-shaped molten resin from the die discharge port and the film surface direction 44 of the film-shaped molten resin 30 is regulated to 45 ° or less.
  • the angle ⁇ (the above-mentioned maximum angle ⁇ ) is regulated to be 45 ° or less.
  • the above-mentioned maximum angle ⁇ is regulated to be 45 ° or less in both directions of one side and the other side of the film, but the above-mentioned maximum angle ⁇ is 45 in only one direction. It may be regulated to be less than °.
  • the resin is pulled in that direction and attached to the cooling roll, whereby the die discharge port
  • the film-shaped molten resin is brought into contact with the cooling roll while the maximum angle ⁇ formed by the discharge direction of the film-shaped molten resin from the die discharge port and the film surface direction of the film-shaped molten resin is regulated to 45 ° or less. It becomes possible to start taking over.
  • auxiliary roll In the take-off step, it is preferable that the regulation is performed by the auxiliary roll disposed between the die and the cooling roll contacting the film-shaped molten resin over the entire width of the film-shaped molten resin.
  • the contact with the entire width means that the auxiliary roll is in contact with all the straight lines connecting one point at one end in the width direction of the film-like molten resin and one point at the other end.
  • the portion in contact with the roll of the film-shaped molten resin discharged from the die discharge port A difference in the flow rate of the resin occurs at a location that does not contact, and the die swell ratio at any location increases, which may cause a die line.
  • the method for fixing the auxiliary roll is not particularly limited, but is preferably fixed to the die by an auxiliary roll connecting member in order to allow the auxiliary roll to follow the die swing or die movement.
  • assistant roll contacts horizontally with respect to the width direction of film-form molten resin.
  • assistant roll may be removed by the control means removal process mentioned later after a taking-up process.
  • the diameter of the auxiliary roll is not particularly limited, but is preferably 10 mm to 200 mm, and more preferably 20 mm to 100 mm.
  • the length of the auxiliary roll in the width direction of the resin is longer than the length of the film-shaped molten resin in the width direction. Specifically, the length is preferably 0 mm to 200 mm longer than the die discharge port width, and preferably 0 to 100 mm longer. More preferably, in the present specification, the width direction of the film-shaped molten resin refers to a direction perpendicular to the discharge direction of the film-shaped molten resin in a plane on the film surface of the film-shaped molten resin.
  • the distance between the auxiliary roll and the discharge port of the die is preferably 10 mm to 200 mm, and more preferably 20 mm to 100 mm.
  • the distance between the auxiliary roll and the discharge port of the die refers to the distance between the contact point where the film-shaped molten resin contacts the auxiliary roll and the discharge port of the die.
  • the auxiliary roll may have a heating unit.
  • the temperature of the auxiliary roll is preferably 20 ° C to 120 ° C, more preferably 25 ° C to 100 ° C.
  • the surface material of the auxiliary roll is not particularly limited, but polytetrafluoroethylene (PTFE), electroless nickel plating, or the like is preferable from the viewpoint of suppressing the resin from sticking to the auxiliary roll.
  • PTFE polytetrafluoroethylene
  • the number of auxiliary rolls may be only one, it may be two or more and is preferably two.
  • the film-shaped molten resin passes between at least two auxiliary rolls from the viewpoint of stabilizing the position of the film-shaped molten resin.
  • FIG. 7 is a schematic view showing an example in which two auxiliary rolls are used in the take-off process.
  • the film-like molten resin 30 discharged from the die 12 passes between two auxiliary rolls 50, the discharge direction of the film-like molten resin from the die discharge port and the film-like molten resin film
  • the maximum angle ⁇ formed with the surface direction is regulated to 45 ° or less.
  • the auxiliary roll 50 is fixed by an auxiliary roll connecting member 52 connected to the die.
  • the film 14 is moved by the hand 14 while the maximum angle ⁇ between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin is regulated to 45 ° or less.
  • the molten molten resin 30 can be guided to the cooling roll 16.
  • the regulation is performed by bringing a regulation plate disposed between the die and the cooling roll into contact with the film-shaped molten resin.
  • the regulation plate and the film-shaped molten resin are preferably in contact with each other over the entire width of the film-shaped molten resin.
  • the contact with the entire width means that the regulating plate is in contact with all the straight lines connecting one point at one end in the width direction of the film-like molten resin and one point at the other end.
  • the method for fixing the restriction plate is not particularly limited, but it is preferably fixed to the die so that the restriction plate can follow the shaking of the die and the movement of the die.
  • a control board contacts horizontally with respect to the width direction of film-form molten resin.
  • the number of restriction plates may be only one, but may be two or more, and preferably two. When two or more regulating plates are arranged, it is preferable that the molten film resin passes between at least two regulating plates from the viewpoint of stabilizing the position of the molten film resin.
  • the restricting plate may be removed by a restricting means removing step described later after the take-off step.
  • the length of the regulating plate in the width direction of the resin is preferably longer than the length of the film-shaped molten resin in the width direction. Specifically, it is preferably 0 mm to 200 mm longer than the die discharge port width, and more preferably 0 to 100 mm longer.
  • the distance between the regulating plates is not particularly limited, but is preferably 5 mm to 50 mm, and more preferably 10 mm to 30 mm.
  • the surface material of the regulating plate is not particularly limited, but polytetrafluoroethylene (PTFE), electroless nickel plating, or the like is preferable from the viewpoint of suppressing the resin from sticking to the regulating plate.
  • the distance between the regulating plate and the die is not particularly limited, but is preferably 0 mm to 200 mm, and more preferably 20 mm to 100 mm.
  • the distance between the regulating plate and the die is the film-shaped molten resin when the angle formed between the film-shaped molten resin discharge direction from the die discharge port and the film surface direction of the film-shaped molten resin is the above ⁇ . Is the distance between the contact point that contacts the regulating plate and the discharge port of the die.
  • the thickness of the regulating plate is not particularly limited and may be any thickness as long as it does not prevent the resin from being attached to the cooling roll, but is preferably 1 mm to 10 mm.
  • FIG. 8 is a schematic view showing an example when two regulating plates are used in the take-off process.
  • the resin and the end of the restriction plate come into contact with each other.
  • the maximum angle ⁇ between the resin discharge direction and the film surface direction of the film-like molten resin is regulated to 45 ° or less.
  • the two restricting plates 60 are directly fixed to the die 12.
  • the film 14 is formed by the hand 14 while the maximum angle ⁇ formed between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin is regulated to 45 ° or less.
  • the molten molten resin 30 can be brought into contact with the cooling roll 16.
  • the regulation is performed by generating wind by an air blowing unit disposed between the die and the cooling roll, and contacting the wind with the film-shaped molten resin.
  • the wind and the film-shaped molten resin are preferably in contact with each other over the entire width of the film-shaped molten resin.
  • the term “in contact with the entire width” means that the wind is in contact with all the straight lines connecting one point at one end of the film-shaped molten resin in the width direction and one point at the other end.
  • the wind is preferably in contact with the horizontal direction of the film-shaped molten resin.
  • the above-mentioned wind may be regulated, for example, by blowing wind on the resin from both sides, or by sending the wind parallel to the discharge direction of the film-like molten resin, A mode in which the wind hits the resin only when the shaking occurs and the angle formed between the discharge direction of the film-shaped molten resin from the die discharge port and the film surface direction of the film-shaped molten resin is increased at the die discharge port It may be. From the viewpoint of stabilizing the position of the resin, it is preferable to blow air on the resin from both sides of the resin, and from the viewpoint of avoiding a decrease in the temperature of the resin, air is blown on the left and right of the resin in parallel with the discharge direction of the film-like molten resin. It is preferable to send.
  • the distance between the wind blowing position and the die discharge port is preferably 10 mm to 200 mm, and more preferably 20 mm to 100 mm. Further, from the viewpoint of setting the above ⁇ to 45 ° or less, it is preferable that the wind blowing position is the same position on both sides of the resin from both sides.
  • the wind direction is preferably the same as the discharge direction of the film-shaped molten resin.
  • the position where the wind is generated may be on the cooling roll side or the opposite side of the position of the die discharge port.
  • the distance between the position where the air is blown out and the die discharge port is preferably 10 mm to 200 mm, and more preferably 20 mm to 100 mm.
  • the distance between the blown-out air and the discharge direction of the film-like molten resin is preferably 10 mm to 200 mm, and more preferably 20 mm to 100 mm.
  • the air blowing means When sending wind parallel to the discharge direction of the film-like molten resin, it is preferable to send wind to both sides of the resin from the viewpoint of stabilizing the position of the resin.
  • a known air blowing means can be used without limitation, and examples thereof include a fan, a blower, and an air knife.
  • the method for fixing the air blowing means is not particularly limited, but is preferably fixed to the die in order to allow the air blowing means to follow the shaking of the die and the movement of the die.
  • the blowing means may include a blower that generates wind, a blower unit such as a blower nozzle that actually blows wind, and a blower path that connects the blower and the blower unit.
  • FIG. 9 is a schematic view showing an example where the air is blown on both sides of the resin when observed from the film surface direction of the film-shaped molten resin 30.
  • wind is blown to the resin from the air blowing units 70 arranged on both sides of the film-shaped molten resin 30.
  • An arrow 74 indicates the direction of the wind.
  • a blower path 72 is attached to the blower unit 70, and the blower path 72 is connected to a blower (not shown).
  • FIG. 10 is a schematic diagram showing an example in which air is blown on one surface and the other surface of the resin in parallel with the discharge direction of the film-shaped molten resin when observed from the film surface direction of the film-shaped molten resin 30. It is.
  • air is blown from the blower units 70 arranged on both sides of the film-shaped molten resin 30 to one surface and the other surface of the resin in parallel with the discharge direction of the film-shaped molten resin.
  • An arrow 74 indicates the direction of the wind.
  • a blowing path 72 is attached to the blowing unit 70, and the blowing path 72 is connected to a blowing device (not shown).
  • the length of the blown region in the width direction is preferably 10 mm to 200 mm longer than the die discharge port width, and more preferably 30 to 100 mm longer.
  • the speed of the blown air is preferably 1 m / s to 30 m / s, and more preferably 2 m / s to 20 m / s.
  • the temperature of the blown air is preferably Tg-50 ° C to Tg + 100 ° C, more preferably Tg ° C to Tg + 50 ° C.
  • FIG. 11 is a schematic view showing that air is blown from both sides of the resin in the take-off process.
  • the film-shaped molten resin 30 discharged from the die 12 passes between the air blown from the two blower units 70, thereby discharging the film-shaped molten resin from the die discharge port and the film.
  • the maximum angle ⁇ formed with the film surface direction of the molten resin is regulated to 45 ° or less. Wind is blown from the two blower units 70 to the film-shaped molten resin 30.
  • the blower unit 70 is fixed by fixing the blower path 72 to the die. According to the embodiment shown in FIG.
  • the film 14 is moved by the hand 14 while the maximum angle ⁇ between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin is regulated to 45 ° or less.
  • the molten molten resin 30 can be brought into contact with the cooling roll 16.
  • the oxygen concentration at the die discharge port is set to 5% from the time when the molten resin is extruded to the die until the film-like molten resin starts to be discharged from the die.
  • the content is preferably 1% or less, more preferably 1% or less, still more preferably 5000ppm or less, and particularly preferably 1000ppm or less.
  • the lower limit of the oxygen concentration is not particularly limited and may be 0% or more.
  • the oxygen concentration can be achieved, for example, by shielding the die discharge port with a shielding member and replacing the space in the shielding member with nitrogen.
  • the film-shaped molten resin is further discharged from the die after starting the take-up, and the discharged film-shaped molten resin is cooled and wound while being drawn by the cooling roll.
  • a process film manufacturing process
  • the film-like molten resin is further discharged from the die, and the discharged film-like molten resin is cooled while being taken up by the cooling roll, and is cooled while being taken up by the cooling roll.
  • the above-described method can be used.
  • any type of rotary cutter, shear blade, knife, or the like may be used.
  • the material either carbon steel or stainless steel may be used.
  • the height of the unevenness due to the thickening process is preferably 1 ⁇ m to 200 ⁇ m, more preferably 10 ⁇ m to 150 ⁇ m, and still more preferably 20 ⁇ m to 100 ⁇ m.
  • Thickening processing may be convex on both sides or convex on one side.
  • the width of the thickening process is preferably 1 mm to 50 mm, more preferably 3 mm to 30 mm, and still more preferably 5 mm to 20 mm. Extrusion can be performed at room temperature to 300 ° C.
  • the film formed may be stretched as it is (online stretching), or after being wound up, it may be sent out again and stretched (offline stretching).
  • the thickness of the laminated film is preferably 5 ⁇ m to 200 ⁇ m, more preferably 10 ⁇ m to 150 ⁇ m, and even more preferably 15 ⁇ m to 100 ⁇ m.
  • the material include polyethylene, polyester, and polypropylene, and are not particularly limited.
  • the film formed may be subjected to one or both of lateral stretching and longitudinal stretching, and may be subjected to relaxation treatment in combination with stretching.
  • lateral stretching and longitudinal stretching may be subjected to relaxation treatment in combination with stretching.
  • relaxation treatment in combination with stretching.
  • the following combinations can be implemented.
  • transverse stretching it is also preferable to carry out a combination of transverse stretching and longitudinal stretching. In this case, it is more preferable to perform transverse stretching after longitudinal stretching.
  • the thermal relaxation is preferably performed after longitudinal stretching, either after lateral stretching, or both, and more preferably after lateral stretching.
  • the relaxation treatment may be performed online continuously after stretching, or may be performed offline after winding after stretching.
  • the manufacturing method of the thermoplastic resin film according to the present disclosure is a step of starting the take-up from the viewpoint of suppressing the occurrence of uneven thickness of the thermoplastic resin film due to uneven cooling of the film-shaped molten resin (take-off start step). After that, before the cooling and winding process (film manufacturing process), the angle formed between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin becomes 45 ° or less. It is preferable to include a step of removing the regulating means (regulating means removing step) after moving either or both of the die and the cooling roll to the position. The angle is preferably 30 ° or less, and more preferably 20 ° or less.
  • the auxiliary roll, the restricting plate, the air blowing unit, or the like is removed.
  • the removal of the regulating means means that the auxiliary roll, the regulating plate, the wind blown by the blower unit, and the like are removed so as not to touch the film-like molten resin.
  • the restriction means is removed in the restriction means removal step so as not to prevent movement of either or both of the die and the cooling roll in the movement step. It is preferable to do.
  • the manufacturing method of the thermoplastic resin film which concerns on this indication is the process (film manufacturing process) which cools and winds up after the taking-in start process from a viewpoint of suppressing the thickness nonuniformity of the thermoplastic resin film resulting from cooling nonuniformity. )
  • the movement step may be performed after the step of removing the regulation means (regulation means removal step) and before the cooling and winding step (film manufacturing step). preferable.
  • FIG. 12 is a schematic view showing an example of a case where the regulating means removing step and the moving step are performed after the take-off starting step using the two auxiliary rolls 50 shown in FIG.
  • the auxiliary roll connecting member 52 has moved, and the auxiliary roll 50 has moved to the side opposite to the resin discharge port of the die.
  • the auxiliary roll 50 is removed and the die 12 and the cooling roll 16 are moved so that the distance between the die 12 and the cooling roll 16 is reduced.
  • Example 1 Cyclic olefin resin pellets (manufactured by JSR Corporation, ARTON) were used as the resin.
  • the resin pellets were pre-dried at 90 ° C. for 5 hours, and then the resin pellets were put into a hopper provided in the extruder and melted at a temperature condition of 285 ° C. using a melt extruder. Thereafter, the molten resin delivered from the gear pump was filtered through a leaf disk filter having a filtration accuracy of 5 ⁇ m. Thereafter, the auxiliary roll is used to control the die discharge port so that the maximum angle ⁇ ⁇ 5 ° between the discharge direction of the film-like molten resin from the die discharge port and the film surface direction of the film-like molten resin.
  • the lip opening degree of the die discharge port was adjusted so that the die swell ratio was 1.1.
  • Two auxiliary rolls were used as shown in FIG.
  • the surface material of the auxiliary roll was polytetrafluoroethylene (PTFE), and the distance between each auxiliary roll and the discharge port of the die was 50 mm.
  • the auxiliary roll width was the same as the width of the die discharge port.
  • the cooling roll was moved horizontally to a position that would not be inclined even if there was no regulation, the auxiliary roll was lifted as shown in FIG. 12, and the cooling roll was moved vertically to approach the die discharge port. Thereafter, the film-like molten resin is passed through the cooling roll 2 (CR2) and the cooling roll 3 (CR3), and then wound through a nip roll, and the end is slit to have a width of 1400 mm, a length of 1600 m, and a thickness. A 80 ⁇ m-thick thermoplastic resin film was obtained.
  • thermoplastic resin film The following evaluation was performed on the obtained thermoplastic resin film. The evaluation results are shown in Table 1.
  • Die line evaluation> The die line was visually confirmed and evaluated according to the following criteria.
  • the thickness of the film was measured using an off-line contact type continuous thickness meter (Anritsu Co., Ltd., Film Sickness Tester KG601B) at a measurement pitch of 1 mm. It measured about 3 m length of the film about the film conveyance direction.
  • the film thickness unevenness was evaluated according to the following criteria. A: The thickness unevenness in the film conveyance direction is less than ⁇ 0.5 ⁇ m. B: The thickness unevenness in the film transport direction is ⁇ 0.5 ⁇ m or more and less than ⁇ 1.0 ⁇ m. C: The thickness unevenness in the film transport direction is ⁇ 1.0 ⁇ m or more and less than ⁇ 1.5 ⁇ m. D: The thickness unevenness in the film transport direction is ⁇ 1.5 or more.
  • ⁇ Slip surface energy> As the surface energy of the lip portion of the die, a value calculated from the contact angle with water and methylene iodide using the Fowkes-Owens equation was used. The contact angle was measured using CA-X manufactured by Kyowa Interface Science Co., Ltd.
  • Example 6 A thermoplastic resin film was produced and evaluated in the same manner as in Example 1 except that the film forming method was not the touch roll method but the casting drum method.
  • Example 7 A thermoplastic resin film was produced and evaluated in the same manner as in Example 2 except that the film forming method was not the touch roll method but the casting drum method.
  • Example 8 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that the film forming method was not the touch roll method but the casting drum method.
  • Example 9 A thermoplastic resin film was produced and evaluated in the same manner as in Example 4 except that the film forming method was not the touch roll method but the casting drum method.
  • Example 10 A thermoplastic resin film was produced and evaluated in the same manner as in Example 5 except that the film forming method was not the touch roll method but the casting drum method.
  • Example 11 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that the lip opening of the die was adjusted so that the die swell ratio was 1.15.
  • Example 12 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that the die lip opening was adjusted so that the die swell ratio was 1.2.
  • Example 13 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that the die lip opening was adjusted so that the die swell ratio was 1.3.
  • thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that the die lip opening was adjusted so that the die swell ratio was 1.4.
  • Example 14 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that a regulating plate was attached under the die discharge port instead of the auxiliary roll as a regulating means.
  • the length of the regulating plate in the width direction is the same as that of the die discharge port, the length of the regulating plate in the resin discharge direction is 50 mm, the interval between the regulating plates is 20 mm, and the surface material of the regulating plate is polytetrafluoroethylene (PTFE)
  • the thickness of the regulation plate was 3 mm
  • Example 15 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that a device that blows slit air instead of the auxiliary roll was used as the regulating means.
  • thermoplastic resin film was prepared in the same manner as in Example 3 except that the die discharge port was surrounded by a heat-resistant resin structure and nitrogen was sealed so that the oxygen concentration would be 10% until the film-shaped molten resin started to be discharged from the die. Manufactured and evaluated.
  • thermoplastic resin film was produced in the same manner as in Example 3 except that the die discharge port was surrounded by a heat-resistant resin and nitrogen was sealed so that the oxygen concentration became 5% until the molten molten resin started to be discharged from the die. And evaluated.
  • thermoplastic resin film was produced in the same manner as in Example 3 except that the die discharge port was surrounded by a heat-resistant resin and nitrogen was sealed so that the oxygen concentration became 1% until the film-shaped molten resin started to be discharged from the die. And evaluated.
  • thermoplastic resin film was produced in the same manner as in Example 3 except that the die discharge port was surrounded by a heat resistant resin and nitrogen was sealed so as to have an oxygen concentration of 5000 ppm until the film-shaped molten resin started to be discharged from the die. Evaluation was performed.
  • thermoplastic resin film was produced in the same manner as in Example 3 except that the die discharge port was surrounded by a heat resistant resin and nitrogen was sealed so that the oxygen concentration became 1000 ppm until the film-shaped molten resin started to be discharged from the die. Evaluation was performed.
  • Example 21 A thermoplastic resin film was produced and evaluated in the same manner as in Example 20 except that the surface material of the die lip was diamond-like carbon (DLC), the surface energy of the die lip was 28 mN / m, and the bright line width of the lip was 15 ⁇ m. Went.
  • DLC diamond-like carbon
  • the surface energy of the die lip was 28 mN / m
  • the bright line width of the lip was 15 ⁇ m. Went.
  • Example 22 A thermoplastic resin film was produced and evaluated in the same manner as in Example 20 except that the surface material of the die lip was ultrachrome plated and the surface energy of the lip part of the die was 46 mN / m and the bright line width of the lip part was 20 ⁇ m. .
  • Example 23 A thermoplastic resin film was produced and evaluated in the same manner as in Example 20 except that the surface material of the die lip was tungsten carbide, the surface energy with the film-shaped molten resin was 42 mN / m, and the lip portion bright line width was 5 ⁇ m. .
  • thermoplastic resin film was produced and evaluated in the same manner as in Example 23 except that the film shaking prevention device was not provided.
  • thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that an acrylic resin (Delpet 80N manufactured by Asahi Kasei Co., Ltd.) was used as the resin.
  • an acrylic resin (Delpet 80N manufactured by Asahi Kasei Co., Ltd.) was used as the resin.
  • thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that polycarbonate (PC, Caliber 301 manufactured by Sumika Stylon Polycarbonate Co., Ltd.) was used as the resin.
  • Example 26 A thermoplastic resin film was produced and evaluated in the same manner as in Example 3 except that a cyclic olefin copolymer (COC, TOPAS6013 manufactured by Polyplastics Co., Ltd.) was used as the resin.
  • a cyclic olefin copolymer COC, TOPAS6013 manufactured by Polyplastics Co., Ltd.
  • Table 1 shows the melt extrusion conditions and evaluation results of the films produced in each example.
  • the film-shaped molten resin is discharged from the die, the discharge direction of the film-shaped molten resin from the die discharge port at the die discharge port, and the film-shaped melt
  • the number of die lines was 30 / m and the thickness unevenness was less than 1.5 ⁇ m.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
PCT/JP2017/034263 2016-09-30 2017-09-22 熱可塑性樹脂フィルムの製造方法 WO2018062028A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018542514A JP6671495B2 (ja) 2016-09-30 2017-09-22 熱可塑性樹脂フィルムの製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016194911 2016-09-30
JP2016-194911 2016-09-30

Publications (1)

Publication Number Publication Date
WO2018062028A1 true WO2018062028A1 (ja) 2018-04-05

Family

ID=61760665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/034263 WO2018062028A1 (ja) 2016-09-30 2017-09-22 熱可塑性樹脂フィルムの製造方法

Country Status (3)

Country Link
JP (1) JP6671495B2 (zh)
TW (1) TW201815549A (zh)
WO (1) WO2018062028A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112839792A (zh) * 2018-10-29 2021-05-25 株式会社瑞光 层叠体的制造方法及制造装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09300429A (ja) * 1996-05-09 1997-11-25 Toray Ind Inc ポリエステルフィルムの製造方法
JP2001026044A (ja) * 1999-07-14 2001-01-30 Toray Ind Inc 熱可塑性樹脂フィルムの製造方法
JP2007091831A (ja) * 2005-09-28 2007-04-12 Sumitomo Chemical Co Ltd ポリプロピレン系樹脂組成物およびフィルム
JP2007098908A (ja) * 2005-10-07 2007-04-19 Sekisui Chem Co Ltd 金型及び熱可塑性樹脂フィルムの製造方法
JP2008194956A (ja) * 2007-02-13 2008-08-28 Fujifilm Corp セルロース系樹脂フィルム及びその製造方法並びに装置
JP2009154518A (ja) * 2007-12-05 2009-07-16 Fujifilm Corp 熱可塑性樹脂フィルムの製造装置及び熱可塑性樹脂フィルムの製造方法
JP2010012696A (ja) * 2008-07-03 2010-01-21 Fujifilm Corp ノルボルネン系樹脂フィルムの製造方法、ノルボルネン系樹脂フィルム、偏光版、液晶表示板用光学補償フィルム及び反射防止フィルム
JP2012179721A (ja) * 2011-02-28 2012-09-20 Toyo Kohan Co Ltd フィルム製造装置および製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09300429A (ja) * 1996-05-09 1997-11-25 Toray Ind Inc ポリエステルフィルムの製造方法
JP2001026044A (ja) * 1999-07-14 2001-01-30 Toray Ind Inc 熱可塑性樹脂フィルムの製造方法
JP2007091831A (ja) * 2005-09-28 2007-04-12 Sumitomo Chemical Co Ltd ポリプロピレン系樹脂組成物およびフィルム
JP2007098908A (ja) * 2005-10-07 2007-04-19 Sekisui Chem Co Ltd 金型及び熱可塑性樹脂フィルムの製造方法
JP2008194956A (ja) * 2007-02-13 2008-08-28 Fujifilm Corp セルロース系樹脂フィルム及びその製造方法並びに装置
JP2009154518A (ja) * 2007-12-05 2009-07-16 Fujifilm Corp 熱可塑性樹脂フィルムの製造装置及び熱可塑性樹脂フィルムの製造方法
JP2010012696A (ja) * 2008-07-03 2010-01-21 Fujifilm Corp ノルボルネン系樹脂フィルムの製造方法、ノルボルネン系樹脂フィルム、偏光版、液晶表示板用光学補償フィルム及び反射防止フィルム
JP2012179721A (ja) * 2011-02-28 2012-09-20 Toyo Kohan Co Ltd フィルム製造装置および製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112839792A (zh) * 2018-10-29 2021-05-25 株式会社瑞光 层叠体的制造方法及制造装置

Also Published As

Publication number Publication date
JP6671495B2 (ja) 2020-03-25
JPWO2018062028A1 (ja) 2019-01-24
TW201815549A (zh) 2018-05-01

Similar Documents

Publication Publication Date Title
JP4519211B2 (ja) プラスチックシートの製造方法および装置
JP6545289B2 (ja) 熱可塑性樹脂フィルムの製造方法及び環状オレフィン樹脂フィルム
JP5483362B2 (ja) スピーカ振動板用フィルムの製造方法及びスピーカ振動板用フィルム
TW202229426A (zh) 液晶聚合物薄膜、柔性覆銅積層板及液晶聚合物薄膜之製造方法
US20230331983A1 (en) Liquid crystal polymer film and substrate for high-speed communication
WO2018062028A1 (ja) 熱可塑性樹脂フィルムの製造方法
US20220204851A1 (en) Liquid crystal polymer film and substrate for high-speed communication
JP5333441B2 (ja) 光学フィルムの製造方法および製造装置
JP4386305B2 (ja) 高品質プラスチックシートの製造方法
JP4857837B2 (ja) プロピレン系樹脂製位相差フィルム用原反シートの製造方法
JP2012006271A (ja) 樹脂フィルムの製造装置
JP2012101398A (ja) 熱可塑性樹脂フィルムの冷却装置および熱可塑性樹脂フィルムの製造方法
JP5799505B2 (ja) 熱可塑性樹脂フィルムの製造方法及び製造装置
JP6910530B2 (ja) 環状オレフィン樹脂フィルムの製造方法、環状オレフィン樹脂フィルム、複合フィルム
JP6771654B2 (ja) 熱可塑性樹脂フィルムの製造方法
JP6128818B2 (ja) 光学フィルムの製造方法
JP7016425B2 (ja) ポリマーフィルム、及び表示装置
JP7141683B2 (ja) ポリアミドフィルムの製造装置および製造方法
WO2021193186A1 (ja) ポリマーフィルムおよび通信用基板
JP5822560B2 (ja) ポリアミドフィルムの製造方法
JP5756552B1 (ja) フィルム製造方法及びフィルム製造装置
JP2000318013A (ja) 熱可塑性樹脂押出し成形用ダイ及びそれを用いたポリエステルシートの成形方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2018542514

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17855982

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17855982

Country of ref document: EP

Kind code of ref document: A1