WO2022138094A1 - 造粒物の製造方法および光学フィルムの製造方法 - Google Patents

造粒物の製造方法および光学フィルムの製造方法 Download PDF

Info

Publication number
WO2022138094A1
WO2022138094A1 PCT/JP2021/044612 JP2021044612W WO2022138094A1 WO 2022138094 A1 WO2022138094 A1 WO 2022138094A1 JP 2021044612 W JP2021044612 W JP 2021044612W WO 2022138094 A1 WO2022138094 A1 WO 2022138094A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
granulated product
resin
granulated
bulk density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/044612
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
真治 稲垣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP2022572070A priority Critical patent/JP7593416B2/ja
Priority to KR1020237020624A priority patent/KR102852192B1/ko
Priority to CN202180086496.7A priority patent/CN116669927A/zh
Publication of WO2022138094A1 publication Critical patent/WO2022138094A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0468—Crushing, i.e. disintegrating into small particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to a method for producing a granulated product and a method for producing an optical film.
  • a polarizing plate is usually used for displays such as liquid crystal displays (LCDs), organic EL displays (OLEDs), and ⁇ LEDs.
  • the polarizing plate includes a polarizing element and an optical film having a function of protecting the polarizing element and an optical compensation function.
  • ears with slit ends and non-standard products may occur. From the viewpoint of effectively utilizing these materials, reducing waste and improving the production efficiency of optical films, reuse the ears slit during film production and non-standard films (return materials). Is being considered.
  • crushed materials such as films have a small bulk density (apparent specific gravity), so they are difficult to handle. Therefore, the crushed material may be pelletized (granulated) and used.
  • Patent Document 1 proposes a method of granulating (or melting) a crushed material of a return material such as a film by frictional heat to obtain a granulated product having a bulk density as low as that of a new pellet (. See Patent Document 1).
  • the optical film is required to have high optical stability (humidity dependence of retardation) and dimensional stability (humidity dependence of dimensions).
  • Films containing cycloolefin resins and (meth) acrylic resins are being used because they have better humidity dependence of retardation and dimensional humidity dependence than conventional films containing cellulose ester resins. ..
  • the crushed product of the film containing these resins is bulkier than the crushed product of the conventional film containing the cellulose ester resin, and has a problem that it is difficult to handle (difficult to transfer and store). Further, when the crushed material of these films is granulated under the conditions shown in Patent Document 1 (granulation by generating frictional heat at a high temperature of about 200 ° C.), the resin of the granulated product is liable to be thermally deteriorated. was there.
  • the granulated product will be produced during air transportation. It easily adheres to the inner wall surface of piping.
  • a film is produced using such a pipe and using different kinds of materials, there is also a problem that granulated matter adhering to the inner wall surface of the pipe and its components are easily mixed as foreign matter.
  • the present invention has been made in view of the above circumstances, and provides a method for producing a granulated product having excellent handleability while suppressing deterioration of the material and contamination of foreign substances due to heat, and a method for producing an optical film using the same.
  • the purpose is to do.
  • the present invention relates to the following method for producing a granulated product and a method for producing an optical film using the same.
  • the method for producing a granulated product of the present invention contains one or more resins selected from the group consisting of (meth) acrylic resins and cycloolefin resins, and has a bulk density of 0.01 to 0.25 g / cm 3 .
  • the step of preparing the crushed material and the crushed material are melted by frictional heat at a temperature of (50 to Tg) ° C. (Tg is the glass transition temperature of the resin), and the bulk density is 0.26 to 0. Includes a step of obtaining a granule at .45 g / cm 3 .
  • the method for producing an optical film of the present invention is a step of obtaining a granulated product by the method for producing a granulated product of the present invention, and the granulated product is melted or dissolved in a solvent to obtain a film-like product. Including the process.
  • the present invention it is possible to provide a method for producing a granulated product having excellent handleability and a method for producing an optical film using the same, while suppressing deterioration of the material and contamination of foreign substances due to heat.
  • FIG. 1 is a cross-sectional view showing the configuration of a crushing / granulating device.
  • FIG. 2 is an enlarged view of a main part of FIG.
  • a film containing a cycloolefin resin or a (meth) acrylic resin is harder to cut (harder to crush) than a film containing a cellulose ester resin, and the crushed material tends to be bulky.
  • cycloolefin-based resins and (meth) acrylic-based resins have higher toughness than cellulose ester-based resins and are prone to generate static electricity because of their low polarity.
  • the crushed material of the film is melted by frictional heat to granulate, and the temperature at that time is kept below a certain level, and 2) the bulk density of the obtained granulated material is not too low. It was found that by further adjusting the melting and granulation conditions, it is possible to suppress the thermal deterioration of the resin of the granulated product and the contamination of foreign matter when switching varieties.
  • the melting temperature due to frictional heat can be adjusted by any method.
  • the melting temperature is, for example, the width and length of the flow path (gap between the screw and the inner wall surface of the cylinder) of the melting zone (compression portion B or transfer portion C) due to the frictional heat of the crushing / granulating device 10 of FIG. 1, which will be described later. , It can be adjusted by the cooling process (at the time of melting), the supply rate (processing rate) of the crushed material, and the like.
  • the bulk density of the granulated product can be adjusted, for example, by the melting temperature due to frictional heat, the aspect ratio of the granulated product, or the like.
  • the present invention relates to a method for producing a granulated product using such a resin film return material. Therefore, first, a resin film (return material), which is a raw material for granulated products, will be described.
  • the return material is scraps or non-standard products cut off in the manufacturing process of resin films such as optical films. In the manufacturing process of an optical film, defective products may occur due to cut-off edges or turbulence. Although these are not products, they can be reused because there is no problem with the material.
  • the optical film contains a cycloolefin resin or a (meth) acrylic resin.
  • the cycloolefin-based resin is a polymer containing a structural unit derived from a norbornene-based monomer.
  • the norbornene-based monomer is represented by the following formula (1).
  • R 1 to R 4 of the formula (1) represent a hydrogen atom, a halogen atom, a hydrocarbon group, or a polar group, respectively.
  • halogen atoms include fluorine atoms and chlorine atoms.
  • the hydrocarbon group is a hydrocarbon group having 1 to 10, preferably 1 to 4, more preferably 1 or 2 carbon atoms.
  • Examples of the hydrocarbon group include an alkyl group such as a methyl group, an ethyl group, a propyl group and a butyl group.
  • the hydrocarbon group further has a divalent linking group of a linking group containing an oxygen atom, a nitrogen atom, a sulfur atom or a silicon atom (eg, a carbonyl group, an imino group, an ether bond, a silyl ether bond, a thioether bond, etc.). You may.
  • polar groups include linking groups such as carboxy group, hydroxy group, alkoxy group, alkoxycarbonyl group, allyloxycarbonyl group, amino group, amide group, and methylene group (-(CH 2 ) n- , n is 1 A group to which these groups are bonded via the above integer) is included.
  • linking groups such as carboxy group, hydroxy group, alkoxy group, alkoxycarbonyl group, allyloxycarbonyl group, amino group, amide group, and methylene group (-(CH 2 ) n- , n is 1
  • alkoxycarbonyl group and an aryloxycarbonyl group are preferable, and an alkoxycarbonyl group is more preferable.
  • R 1 to R 4 is a polar group.
  • a cycloolefin resin containing a structural unit derived from a norbornene-based monomer having a polar group is easily dissolved in a solvent, for example, when forming a film by a solution casting method, and easily raises the glass transition temperature of the obtained film. ..
  • a cycloolefin resin containing no structural unit derived from a norbornene-based monomer having a polar group may be used.
  • both R 1 and R 2 may be hydrogen atoms.
  • P in the equation (1) indicates an integer of 0 to 2. From the viewpoint of increasing the heat resistance of the optical film, p is preferably 1 to 2.
  • examples of the norbornene-based monomers represented by the formula (1) include the following.
  • Examples of norbornene-based monomers having no polar group include:
  • the content of the structural unit derived from the norbornene-based monomer can be 50 to 100 mol% with respect to all the structural units constituting the cycloolefin-based resin.
  • the cycloolefin-based resin may further contain a structural unit derived from a norbornene-based monomer and a structural unit derived from another copolymerizable monomer.
  • examples of other copolymerizable monomers include norbornene-based monomers that do not have polar groups (if the norbornene-based monomers have polar groups), cyclobutene, cyclopentene, cycloheptene, and dicyclopentadiene. Cycloolefin-based monomers having no norbornene skeleton such as are included.
  • the weight average molecular weight Mw of the cycloolefin resin is not particularly limited, but is preferably 20,000 to 300,000, more preferably 30,000 to 250,000, and even more preferably 40,000 to 200,000. ..
  • Mw of the cycloolefin resin is in the above range, the mechanical properties of the film can be enhanced without impairing the moldability.
  • the Mw of the cycloolefin resin can be measured by gel permeation chromatography (GPC). Specifically, it can be measured under the following conditions using HLC8220GPC manufactured by Tosoh Corporation. (Measurement condition) Eluent: THF Column: Tosoh TSKgel GMHXL x 2 Flow velocity: 1.0 mL / min Sample concentration: 0.1% by mass Injection volume: 100 ⁇ L Detector: RI Calibration curve: Standard polystyrene Column temperature: 40 ° C
  • the glass transition temperature Tg of the cycloolefin resin is usually preferably 110 ° C. or higher, more preferably 110 to 350 ° C., and even more preferably 120 to 250 ° C.
  • the Tg of the cycloolefin-based resin is 110 ° C. or higher, sufficient heat resistance is likely to be obtained, and when the Tg is 350 ° C. or lower, thermal deterioration of the cycloolefin-based resin during molding can be suppressed.
  • Tg can be measured by a method compliant with JIS K7121-2012 or ASTM D3418-82 using DSC (Differential Scanning Colorimetry).
  • the (meth) acrylic resin is preferably a polymer containing a structural unit derived from methyl methacrylate.
  • the polymer may further contain structural units derived from a monomer copolymerizable with methyl methacrylate.
  • Examples of other monomers copolymerizable with methyl methacrylate include alkyl (meth) acrylates with 1-18 carbon atoms other than methyl methacrylate, such as 2-ethylhexyl (meth) acrylate; ⁇ , such as (meth) acrylic acid.
  • ⁇ -Unsaturated acid Unsaturated dicarboxylic acid such as maleic acid, fumaric acid, itaconic acid
  • Styrene such as styrene and ⁇ -methylstyrene
  • Maleimide anhydride Maleimide such as maleimide and N-phenylmaleimide
  • Glutarate anhydride Things etc. are included.
  • the content of the structural unit derived from methyl methacrylate is preferably 50% by mass or more, more preferably 70% by mass or more, based on all the structural units constituting the polymer.
  • the Tg of the (meth) acrylic resin is preferably 90 ° C. or higher, more preferably 100 to 150 ° C. When the Tg of the (meth) acrylic resin is within the above range, the heat resistance of the optical film can be easily increased.
  • the Tg of the (meth) acrylic resin can be measured by the same method as described above.
  • the Mw of the (meth) acrylic resin is preferably 400,000 to 3 million, more preferably 500,000 to 2 million. When the Mw of the (meth) acrylic resin is in the above range, sufficient mechanical strength can be imparted to the film.
  • the Mw of the (meth) acrylic resin can be measured by the same method as described above.
  • the content of the cycloolefin resin or the (meth) acrylic resin is preferably 50% by mass or more, more preferably 70 to 99% by mass with respect to the optical film.
  • the optical film may further contain other components as needed.
  • other components include rubber particles, matting agents, antioxidants, UV absorbers and the like.
  • Rubber particles can impart flexibility to the film.
  • the rubber particles are a graft copolymer containing a rubber-like polymer (crosslinked polymer).
  • rubber-like polymers include butadiene-based crosslinked polymers, (meth) acrylic-based crosslinked polymers, and organosiloxane-based crosslinked polymers.
  • the (meth) acrylic crosslinked polymer is preferable, and the acrylic crosslinked polymer (acrylic rubber-like polymer) is preferable from the viewpoint that the difference in refractive index from the methacrylic resin is small and the transparency of the optical film is not easily impaired. More preferred.
  • the matting agent can form irregularities on the surface of the optical film and impart slipperiness.
  • the matting agent may be inorganic particles, resin particles, or the like.
  • the inorganic particles include fine particles such as silicon dioxide, titanium dioxide, aluminum oxide, zirconium oxide, and calcium carbonate, and are preferably silicon dioxide particles.
  • the antioxidant is not particularly limited, but for example, a hindered phenolic antioxidant or the like can be used.
  • the thickness of the optical film is not particularly limited, but is, for example, about 5 to 100 ⁇ m, preferably about 5 to 40 ⁇ m.
  • the method for producing a granulated product of the present invention is as follows: 1) a step of preparing a crushed product containing the above resin, and 2) melting the obtained crushed product by frictional heat to produce a granulated product. Including the process of obtaining.
  • step 1) a crushed product containing the above resin is prepared.
  • the crushed material containing the resin is preferably a crushed material of the return material of the resin film such as an optical film.
  • the thickness of the return material is the same as the thickness of the optical film.
  • the resin film is crushed under the condition that the heat generated at the time of crushing and received by the crushed material is reduced, that is, the bulk density of the obtained film piece is appropriately lowered.
  • the bulk density of the obtained crushed product is preferably 0.01 to 0.25 g / cm 3 .
  • the bulk density of the obtained crushed material is 0.25 g / cm 3 or less (that is, when the crushed material is large)
  • the load at the time of crushing and the heat generated by the crushed material are reduced, and the crushed material due to the heat at the time of crushing is reduced. It is easy to suppress deterioration and coloring due to it.
  • the bulk density of the crushed material is 0.01 g / cm 3 or more, the crushed material is not too large, so that granulation can be easily performed.
  • the bulk density of the obtained crushed product is more preferably about 0.07 to 0.18 g / cm 3 .
  • the bulk density of the crushed material can be measured by the following method.
  • a container having a capacity of 100 mL is filled with the crushed material to the fullest, and the mass of the filled crushed material (or granulated material) is measured. This measurement is performed 10 times, and the average bulk density is calculated from the relationship with the capacity. When filling the container, tapping shall not be performed.
  • the size of the crushed material is not particularly limited as long as the bulk density satisfies the above range, but it may be a substantially square (or a rectangular shape having the same area as that) having a side length of about 2 to 8 mm. preferable.
  • the size of the crushed material is more preferably a substantially square (or a rectangular shape having the same area as that) having a side length of about 3 to 7 mm.
  • the ratio (%) (separation rate) when the crushed material is sifted with a mesh having an average opening of 1 mm for 2 minutes is not particularly limited, but is, for example, the total amount of the crushed material before sieving. It can be 10% by mass or less.
  • the crushed material having a preparative rate of 10% by mass or less is crushed under mild conditions, and the load at the time of crushing is moderately small, so that it is easier to suppress thermal deterioration of the resin due to heat generation at the time of crushing. From the above viewpoint, the fractionation rate (%) of the crushed material is more preferably 5% by mass or less with respect to the total amount of the crushed material before sieving.
  • the bulk density, size and preparative rate of the crushed material can be adjusted according to the crushing conditions.
  • the heat generation during crushing should be reduced (the heat received by the returned material during crushing should be reduced), specifically, crushing. It is preferable to reduce the heat generation during crushing by reducing the load at the time or removing heat.
  • the resin film can be crushed by any method.
  • the resin film can be crushed by sandwiching a return material between the fixed blade and the rotary blade and crushing the resin film.
  • step 2 Next, frictional heat is generated in the obtained crushed material, and the crushed material is melted or fused by the heat.
  • Melting by frictional heat is preferably performed at (50 to Tg) ° C.
  • Tg is the glass transition temperature of the resin.
  • the melting temperature due to frictional heat is 50 ° C. or higher, the crushed material can be in a semi-melted state, so that a granulated product having a reduced bulk density can be easily obtained.
  • the melting temperature is Tg ° C. or lower, the crushed material does not become too high and the thermal deterioration of the resin can be suppressed, so that the decrease in the molecular weight of the resin and the coloring of the granulated product can be suppressed.
  • the melting temperature is more preferably 50 to 100 ° C, further preferably 60 to 100 ° C.
  • the melting temperature can be measured as the atmospheric temperature at the time of melting due to frictional heat.
  • it can be measured as the atmospheric temperature on the downstream side of the melting process due to frictional heat (for granulation) (see FIG. 2 described later).
  • the melting temperature can be determined by, for example, the magnitude of the friction applied to the crushed material, the time for applying the friction (residence time), the cooling treatment, and the like.
  • the melting temperature is determined by the supply speed of the crushed material, the width and length of the flow path in the compression unit B and the transfer unit C, and cooling or slow heating by the temperature adjusting unit (cooling means). It can be adjusted by the degree of (cooling temperature) and the like.
  • lowering the melting temperature for example, it is preferable that the width of the flow path of the compression section B and the transfer section C of the crushing / granulating apparatus 10 is appropriately increased and the length is appropriately shortened.
  • the temperature adjusting unit cooling means
  • crushed material melted by frictional heat may be further cut to a predetermined size (or length).
  • the bulk density of the granulated product is preferably higher than the bulk density of the crushed product. Specifically, the bulk density of the granulated product is higher than the bulk density of the crushed product and lower than the bulk density of the new pellet (not the recycled product) (for example, 80% of the bulk density of the new pellet). The following) is preferable. Specifically, the bulk density of the granulated product is preferably 0.26 to 0.45 g / cm 3 . When the bulk density of the granulated product is 0.26 g / cm 3 or more, it is easy to carry it by air or store it, and the handleability can be improved.
  • the bulk density of the granulated product is 0.45 g / cm 3 or less, excessive heat is not applied during granulation, so that thermal deterioration of the resin of the granulated product can be suppressed, and the resin constituting the granulated product can be suppressed. It is possible to suppress a decrease in molecular weight and coloring.
  • the recycled film obtained by using such a granulated product can also maintain good mechanical properties and optical properties.
  • the bulk density of the granulated product is more preferably 0.35 to 0.45 g / cm 3 .
  • the bulk density of the granulated product can be measured by the same method as the bulk density of the crushed product.
  • the bulk density of the granulated product can be about 150 to 1500% of the bulk density of the crushed product.
  • the bulk density of the granulated product can be adjusted by the melting temperature and the aspect ratio of the granulated product.
  • the melting temperature is preferably moderately low, and the aspect ratio of the granulated product is preferably moderately large.
  • the aspect ratio of the granulated product can be appropriately set according to the bulk density of the granulated product satisfying the above range and the required handleability.
  • the aspect ratio of the granulated product is preferably, for example, 4 to 50. If the aspect ratio is 4 or more, for example, it is difficult to adhere to the inner wall surface of the pipe during air feeding, so it is easy to suppress foreign matter contamination when switching types. If it is 50 or less, the bulk density of the granulated product becomes too high. Since there is no such thing, the handleability of transportation and storage is not easily impaired. From the above viewpoint, the aspect ratio of the granulated product is more preferably 4 to 20.
  • the aspect ratio of the granulated product is the average value (mean aspect ratio) of the ratio of the length of the long axis to the length of the minor axis of the granulated product.
  • the aspect ratio of the granulated product can be measured by the following method. First, for each of the 100 arbitrary granulations, the lengths of the major axis and the minor axis of the granulated matter are measured from the images taken by the camera, and the aspect ratio (length of the major axis / length of the minor axis) is measured. ) Is calculated.
  • the long axis is the line segment connecting the two most distant points in the contour of the granulated object in the captured image
  • the short axis is the line segment connecting the intersection of the straight line perpendicular to the long axis and the contour. Make it a long line segment. Then, the average value of the obtained aspect ratios is defined as the "aspect ratio".
  • the aspect ratio of the granulated product can be adjusted by the cutting length and diameter (or the inner diameter of the extrusion port 22 of the crushing / granulating device 10) of the string-shaped resin extruded from the crushing / granulating device 10.
  • the YI of the granulated product is preferably small from the viewpoint of reducing the coloring of the obtained film. Specifically, the YI of the granulated product is preferably 1.0 or less, and more preferably 0.6 or less.
  • the YI of the granulated product is measured using a spectrocolorimeter (for example, a spectrocolorimeter CM-3700d manufactured by Konica Minolta), a D65 (color temperature 6504K) as a light source, and a viewing angle of 10 °. be able to.
  • a spectrocolorimeter for example, a spectrocolorimeter CM-3700d manufactured by Konica Minolta
  • a D65 color temperature 6504K
  • Granulation by frictional heat can be performed by any method.
  • granulation by frictional heat can be performed by, for example, an extrusion device having a screw.
  • the steps 1) and 2) above may be performed by different devices, or may be performed by one continuous device.
  • one continuous device for example, the same device as that described in JP-A-54-45365 can also be used.
  • the above steps 1) and 2) are performed by one continuous device is shown.
  • FIG. 1 is a cross-sectional view showing the configuration of the crushing / granulating apparatus 10 according to the present embodiment.
  • FIG. 2 is an enlarged view of a main part of FIG.
  • the crushing / granulating device 10 includes a cylinder 20, a screw 30 rotatably arranged inside the cylinder 20, a cutting portion 40, a separating portion 50, and a temperature adjusting portion 60. ..
  • the cylinder 20 has a supply port 21 to which a return material 70 such as a resin film is supplied, and an extrusion port 22 to which the return material 70 compressed by the cylinder 20 is extruded.
  • the screw 30 has a rotating shaft 31, a cutter screw 32A, a mixing screw 32B, and a conveyor screw 32C arranged around the rotating shaft 31. That is, the crushing / granulating apparatus 10 compresses and rubs the crushed material A (region corresponding to the cutter screw 32A) that crushes the return material 70 in order from the supply port 21 side along the screw 30. It has a compression unit B (region corresponding to the mixing screw 32B) that generates heat, and a transfer unit C (region corresponding to the conveyor screw 32C) that melts and transfers the return material by frictional heat.
  • the cutter screw 32A in the crushing portion A may be, for example, a rotary blade formed in the shape of a strip screw.
  • a plurality of fixed blades 23 are arranged on the inner wall surface of the cylinder 20 corresponding to the cutter screw 32A so that the cutting edge is close to the cutter screw 32A. Then, the return material 70 supplied into the cylinder 20 is cut by the fixed blade 23 and the cutter screw 32A.
  • the cylinder 20 corresponding to the mixing screw 32B in the compression portion B is formed in a tapered shape so that its inner diameter becomes smaller in the feed direction.
  • the mixing screw 32B is formed in a tapered shape in accordance with the cylinder 20, and may have, for example, multiple threads. Then, the return material 70 is compressed in the process of passing through the flow path between the cylinder 20 and the mixing screw 32B, and frictional heat is generated.
  • the conveyor screw 32C in the transfer portion C is formed in a multi-row screw shape having a shape that reduces heat generation, for example. Then, a constant propulsive force is applied to the return material 70 sent from the mixing screw 32B in a semi-molten state, and the material is extruded in a string shape from the extrusion port 22.
  • the step 1) above can be performed in the crushing section A, and the melting by the frictional heat in the step 2) above can be performed in the compression section B and the transfer section C.
  • the melting temperature at the time of melting by frictional heat in the step 2) is adjusted to the above range, that is, 50 to Tg (° C.).
  • the melting temperature can be measured by a thermocouple 24 arranged in the vicinity of the extrusion port 22 (see FIG. 2).
  • the melting temperature is, for example, the supply speed of the crushed material (rotational speed of the screw, etc.), the taper angle of the compression section B, and the mixing screw 32B (or convention screw 32C) in the compression section B (or transfer section C). It can be adjusted by adjusting the width W1 (or W2) of the flow path between the inner wall surface of the cylinder 20 and the length L1 (or L2) in the feeding direction, cooling inside and outside the device, and the like.
  • the melting temperature is lowered, for example, the supply rate of the crushed material is preferably reduced, the taper angle of the cylinder 20 is preferably reduced, and the space between the screw 32B (or 32C) and the inner wall surface of the cylinder 20 is reduced.
  • the width C1 (or C2) of the gap is preferably large, and the length L1 (or L2) in the feed direction of the gap is preferably short. It is also preferable to adjust (cool) the temperatures of the cylinder 20 and the screw 30 by the temperature adjusting unit 60 described later.
  • the cutting portion 40 is arranged in the vicinity of the extrusion port 22 of the cylinder 20, and cuts the extruded string-shaped return material 72 to a predetermined length.
  • the cutting portion 40 is not particularly limited, but has, for example, a cutting blade 41.
  • the separation unit 50 separates the re-fused granules obtained by cutting at the cutting unit 40.
  • the separation unit 50 includes, but is not particularly limited, a cooling or blowing means 51 such as a cooling blower, and a rotating disk 52 having fins.
  • the temperature adjusting unit 60 may be a cooling device for adjusting the cylinder 20 and the screw 30 to an appropriate temperature.
  • the temperature adjusting unit 60 includes, for example, a cooling jacket 61 operated from the outside of the cylinder 20 and a water passage means 62 operated from the inside of the screw 30.
  • the return material 70 such as a resin film is charged into the cylinder 20 from the return material supply unit 1.
  • the charged return material 70 is cut by the cutter screw 32A (rotary blade) and the fixed blade 23 of the cylinder 20 in the crushing portion A to become a crushed material, and is sent out to the compression portion B.
  • the return material 70 (crushed material) sent to the compression unit B is mixed in a compressed state by passing through the gap between the cylinder 20 having a tapered diameter and the mixing screw 32B, and an appropriate frictional heat is generated. .. Due to the frictional heat, the return material 70 (crushed material) is in a semi-molten state and is sent to the transfer unit C.
  • the return material 70 which is sent out to the transfer portion C in a semi-molten state, is appropriately fused while moving through the gap between the cylinder 20 and the conveyor screw 32C, and in the semi-fused state, the extrusion port at the tip of the cylinder 20. Extruded from 22.
  • the granulation conditions (between the screw and the inner wall surface of the cylinder 20) in the compression section B and the transfer section C are set so that the melting temperature measured by the thermocouple 24 is within the above range.
  • the size and length of the gap), the supply speed of the return material 70, cooling by the temperature adjusting unit 60, and the like are performed.
  • the return material 70 extruded into a string shape is cut into granules of a predetermined length (aspect ratio) by the cutting portion 40 to become granules (granular matter).
  • the obtained granulated product may be re-fused by heat, but it is separated by being blown by cooling air at the separation unit 50. Thereby, the granulated material having an appropriate bulk density can be continuously collected from the discharge port 53.
  • the method for producing an optical film of the present invention is 2-1) a step of obtaining a granulated product by the above-mentioned manufacturing method, and 2-2) a step of obtaining a film-like product using the obtained granulated product. And include.
  • a granulated product is obtained by the above manufacturing method.
  • a film-like product is obtained by using the obtained granulated product in the step 2-2).
  • the film-like substance can be obtained by any method, and may be obtained by a melt casting method or a solution casting method.
  • melt casting method In the melt casting method, the thermal melt of the granulated product is cast and then cooled and solidified to obtain a cast film. Specifically, it can be obtained through A1) a step of casting the thermal melt of the granulated product and then cooling and solidifying it, and A2) a step of stretching the obtained film-like material, if necessary.
  • the prepared granulated products are melt-kneaded with a twin-screw extruder or the like, and then cast from a casting die.
  • the thermal melting temperature in the melt casting can be (Tg + 30) to (Tg + 70) ° C., where Tg is the glass transition temperature of the resin.
  • the stretching may be performed according to the required optical characteristics, and it is preferable to stretch in one or more of the width direction (TD direction), the transport direction (MD direction), and the diagonal direction.
  • the draw ratio is set according to the required optical performance, and can be 1.01 to 1.3 times, for example, from the viewpoint of functioning as a low phase difference film.
  • the stretch ratio is defined as (the size of the film after stretching in the stretching direction) / (the size of the film before stretching in the stretching direction).
  • the stretching temperature drying temperature at the time of stretching is preferably (Tg-20) to (Tg + 30) ° C.
  • a solution (dope) in which a granulated product is dissolved in a solvent is cast and then dried to obtain a cast film.
  • B1 a step of preparing a dope containing a granulated product
  • B2) a step of casting the obtained dope on a support, drying and peeling to obtain a film-like substance, and if necessary.
  • B3) It can be produced through a step of stretching the obtained film-like material.
  • the granulated product is dissolved in a solvent to prepare a dope.
  • the solvent used includes at least an organic solvent (good solvent) capable of dissolving a cycloolefin resin.
  • good solvents include chlorine-based organic solvents such as methylene chloride; non-chlorine-based organic solvents such as methyl acetate, ethyl acetate, acetone and tetrahydrofuran, preferably methylene chloride.
  • the solvent used may further contain a poor solvent such as an aliphatic alcohol having 1 to 4 carbon atoms such as methanol and ethanol from the viewpoint of enhancing the peelability of the casting film from the support.
  • the obtained dope is discharged from, for example, a casting die and spread onto the support.
  • the solvent is then evaporated from the dope cast on the support and then stripped to give a film.
  • the obtained film-like material is stretched.
  • the stretching ratio and stretching temperature can be the same as in the step A2) above.
  • the optical film thus obtained can be preferably used as a protective film (including a retardation film) for a polarizing plate.
  • the total light transmittance of the optical film is not particularly limited as long as it has sufficient light transmittance, but is preferably 80% or more, more preferably 85% or more, and more preferably 88% or more. Is even more preferable.
  • the total light transmittance of the optical film can be measured according to JIS K7361-1: 1997.
  • the difference in YI before and after reproduction of the optical film is preferably less than 0.1, more preferably less than 0.05, and even more preferably less than 0.03.
  • the difference in YI before and after reproduction of the optical film is the difference between YI 0 of the optical film (return material) before reproduction and YI 1 of the optical film after reproduction (manufactured using granulated material) (YI 1 - YI). It can be obtained as 0 ).
  • YI can be measured by the same method as described above.
  • the Tg and Mw of the resin were measured by the following method.
  • Tg The Tg of the resin was measured according to JIS K 7121-2012 using DSC (Differential Scanning Colorimetry).
  • Mw The Mw of the resin was measured by gel permeation chromatography (HLC8220GPC manufactured by Tosoh Corporation) under the following conditions. (Measurement condition) Eluent: THF Column: Tosoh TSKgel GMHXL x 2 Flow velocity: 1.0 mL / min Sample concentration: 0.1% by mass Injection volume: 100 ⁇ L Detector: RI Calibration curve: Standard polystyrene
  • Rubber particles Rubber particles (Kaneka M210 manufactured by Kaneka Corporation, average primary particle diameter R: 200 nm)
  • a dope having the following composition was prepared. First, methylene chloride and ethanol were added to the pressure melting kettle. Next, the pellets of the cycloolefin resin (COP-1) were added to the pressurized dissolution tank with stirring, and then the additive solution prepared above was added, and the mixture was completely dissolved or dispersed while stirring. The obtained solution was filtered using SHP150 manufactured by Roki Techno Co., Ltd. to obtain a dope having the following composition. Cycloolefin resin (COP): 100 parts by mass Methylene chloride: 220 parts by mass Ethanol: 35 parts by mass Additive solution: 200 parts by mass
  • the film A-1 (cycloolefin resin film) having a thickness of 40 ⁇ m was obtained after further drying at (Tg-20) ° C. while transporting with a roll.
  • the obtained film A-1 was slit with a laser cutter and used as a return material.
  • a film A-2 (cycloolefin resin film) having a thickness of 15 ⁇ m was obtained in the same manner as the film A-1 except that the casting amount was changed.
  • the resin extruded in a string shape from the crushing / granulating apparatus 10 was cut to a predetermined length so that the bulk density of the granulated product had the value shown in Table 1 to obtain a granulated product. ..
  • Granulation was carried out in the same manner as in Test 1 except that the granulation conditions (melting temperature due to frictional heat) were changed as shown in Table 1 by changing the cooling temperature (water temperature) by the temperature adjusting unit 60.
  • ⁇ Test 13> Granulation was carried out in the same manner as in Test 4 except that the type of return material (thickness of the film piece) was changed to that shown in Table 1.
  • ⁇ Test 14> Granulation was carried out in the same manner as in Test 4 except that the type of return material (type of resin) and the granulation conditions (melting temperature) were changed to the values shown in Table 1. The melting temperature was adjusted by changing the cooling temperature by the temperature adjusting unit 60.
  • ⁇ Test 15> Granulation was carried out in the same manner as in Test 14 except that the granulation conditions (melting temperature) and the aspect ratio of the granulated product were changed as shown in Table 1. The melting temperature was adjusted by changing the cooling temperature by the temperature adjusting unit 60.
  • the aspect ratio of the granulated product was measured by the following procedure. First, for each of the 100 arbitrary granulations, the lengths of the major axis and the minor axis of the granulated matter are measured from the images taken by the camera, and the aspect ratio (length of the major axis / length of the minor axis) is measured. Was calculated. The long axis is the line segment connecting the two most distant points in the contour of the granulated object in the captured image, and the short axis is the line segment connecting the intersection of the straight line perpendicular to the long axis and the contour. It was a long line segment. Then, the average value of the obtained aspect ratios was defined as the "aspect ratio".
  • a recycled film having a thickness of 40 ⁇ m was obtained in the same manner as in the production methods of the films A-1 to A-3 except that the obtained granulated product was used as the resin.
  • ⁇ Increase in YI (YI 1 -YI 0 ) is less than 0.03 ⁇ : Increase in YI (YI 1 -YI 0 ) is 0.03 or more and less than 0.05 ⁇ : Increase in YI (YI 1- YI 0 ) is 0.05 or more and less than 0.1 ⁇ : If the amount of increase in YI (YI 1 ⁇ YI 0 ) is 0.1 or more and ⁇ or more, it is considered as an allowable range.
  • ⁇ Increase in YI (YI 2 -YI 1 ) is less than 0.03 ⁇ : Increase in YI (YI 2 -YI 1 ) is 0.03 or more and less than 0.05 ⁇ : Increase in YI (YI 2 -YI 1) YI 1 ) is 0.05 or more and less than 0.1 ⁇ : If the amount of increase in YI (YI 2 -YI 1 ) is 0.1 or more and ⁇ or more, it is within the permissible range.
  • Table 1 shows the evaluation results of the granulated products obtained in Tests 1 to 15.
  • Tests 1 and 11 (tests) in which melting by frictional heat was performed at a high temperature exceeding Tg and the bulk density of the granulated product was adjusted to more than 0.6 g / cm 3 (90% with respect to new pellets).
  • 11 corresponds to the condition of Patent Document 1) and the granulated product of 15 not only causes a decrease in molecular weight and coloring of the resin due to thermal deterioration, but also causes foreign matter to be mixed when switching varieties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Physical Vapour Deposition (AREA)
PCT/JP2021/044612 2020-12-25 2021-12-06 造粒物の製造方法および光学フィルムの製造方法 Ceased WO2022138094A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2022572070A JP7593416B2 (ja) 2020-12-25 2021-12-06 造粒物の製造方法および光学フィルムの製造方法
KR1020237020624A KR102852192B1 (ko) 2020-12-25 2021-12-06 조립물의 제조 방법 및 광학 필름의 제조 방법
CN202180086496.7A CN116669927A (zh) 2020-12-25 2021-12-06 造粒物的制造方法和光学膜的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020216666 2020-12-25
JP2020-216666 2020-12-25

Publications (1)

Publication Number Publication Date
WO2022138094A1 true WO2022138094A1 (ja) 2022-06-30

Family

ID=82159515

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/044612 Ceased WO2022138094A1 (ja) 2020-12-25 2021-12-06 造粒物の製造方法および光学フィルムの製造方法

Country Status (5)

Country Link
JP (1) JP7593416B2 (https=)
KR (1) KR102852192B1 (https=)
CN (1) CN116669927A (https=)
TW (1) TWI821825B (https=)
WO (1) WO2022138094A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445365A (en) * 1977-09-16 1979-04-10 Toyo Watch Case Mfg Method and apparatus for granulating resin
JP2020166194A (ja) * 2019-03-29 2020-10-08 コニカミノルタ株式会社 光学フィルムの製造方法
JP2021016964A (ja) * 2019-07-18 2021-02-15 コニカミノルタ株式会社 光学フィルム製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06315931A (ja) * 1992-08-31 1994-11-15 Toyobo Co Ltd 長繊維強化ペレット
JP4563536B2 (ja) * 1999-12-17 2010-10-13 株式会社クレハ 樹脂組成物ペレットの製造方法
JP4108021B2 (ja) * 2003-08-21 2008-06-25 ダイセル化学工業株式会社 プラスチック混合物の分別処理システム
JP2008087241A (ja) * 2006-09-29 2008-04-17 Konica Minolta Opto Inc 光学フィルム及びその製造方法、偏光板用保護フィルム及びそれを用いた偏光板、並びに液晶表示装置
JP2010242017A (ja) * 2009-04-09 2010-10-28 Konica Minolta Opto Inc 光学フィルムの製造方法
JP2014117919A (ja) * 2012-12-19 2014-06-30 Nippon Zeon Co Ltd 樹脂組成物及びその利用
JP6565157B2 (ja) * 2014-10-06 2019-08-28 住友ベークライト株式会社 造粒粉、放熱用樹脂組成物、放熱シート、半導体装置、および放熱部材
CN107922535B (zh) * 2015-09-01 2021-06-29 Dic株式会社 粉体混合物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445365A (en) * 1977-09-16 1979-04-10 Toyo Watch Case Mfg Method and apparatus for granulating resin
JP2020166194A (ja) * 2019-03-29 2020-10-08 コニカミノルタ株式会社 光学フィルムの製造方法
JP2021016964A (ja) * 2019-07-18 2021-02-15 コニカミノルタ株式会社 光学フィルム製造方法

Also Published As

Publication number Publication date
KR102852192B1 (ko) 2025-08-28
TW202235243A (zh) 2022-09-16
JPWO2022138094A1 (https=) 2022-06-30
CN116669927A (zh) 2023-08-29
JP7593416B2 (ja) 2024-12-03
KR20230108325A (ko) 2023-07-18
TWI821825B (zh) 2023-11-11

Similar Documents

Publication Publication Date Title
KR102156011B1 (ko) 펠릿 혼합물 및 사출 성형체
JP6587165B2 (ja) 光学材料用樹脂組成物およびこれを含む光学フィルム
Zeng et al. Effect of mechanical recycling on crystallization, mechanical, and rheological properties of recycled high‐density polyethylene and reinforcement based on virgin high‐density polyethylene
WO2005108438A1 (ja) イミド樹脂とその製造方法、およびそれを用いた成形体
WO2022138094A1 (ja) 造粒物の製造方法および光学フィルムの製造方法
CN103958156A (zh) 光学膜及具备该光学膜的液晶显示装置
JP5301891B2 (ja) 結晶性乳酸系ポリエステルフィルムからペレットの製造方法およびその製造方法により得られるペレット
JP2018009144A (ja) メタクリル系樹脂組成物、該メタクリル系樹脂組成物の製造方法、ペレット、及び成形体
WO2006123709A1 (ja) セルロース混合エステルフィルムおよびその製造方法
KR102313336B1 (ko) 광학 필름 제조 방법
CN111440382B (zh) 一种冷裱膜用柔性pp颗粒及其制备方法
JPH08192425A (ja) 紐状溶融熱可塑性樹脂または紐状溶融熱可塑性樹脂組成物の冷却方法
JP2010100746A (ja) 光学用フィルムおよびその製造方法
JP2014117919A (ja) 樹脂組成物及びその利用
JP7644787B2 (ja) 延伸フィルムの製造方法
JP7615261B2 (ja) ポリエステルフィルム
JP4141263B2 (ja) ポリエチレンテレフタレート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
CN116535793A (zh) 酰亚胺化树脂组合物的制造方法及酰亚胺化树脂组合物
JP4137570B2 (ja) ポリエチレンテレフタレート樹脂組成物の製造方法
TW449540B (en) Process for producing heat-resistant thermoplastic resin pellets and heat-resistant pellets obtained therefrom
JP4141273B2 (ja) 共重合ポリエチレンテレフタレートフィルムの製造方法
KR20190030215A (ko) 압출된 박막의 제조방법, 그렇게 제조된 박막 및 그의 용도
JP2008302627A (ja) 飽和ノルボルネン系樹脂フィルム及びその製造方法
JP2026072023A (ja) リサイクルスチレン系樹脂及びリサイクルスチレン系樹脂を含有する成形体の製造方法

Legal Events

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

Ref document number: 21910244

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022572070

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20237020624

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 202180086496.7

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21910244

Country of ref document: EP

Kind code of ref document: A1