WO2020110643A1 - Rouleau de film et procédé de fabrication d'un tel rouleau de film - Google Patents

Rouleau de film et procédé de fabrication d'un tel rouleau de film Download PDF

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Publication number
WO2020110643A1
WO2020110643A1 PCT/JP2019/043523 JP2019043523W WO2020110643A1 WO 2020110643 A1 WO2020110643 A1 WO 2020110643A1 JP 2019043523 W JP2019043523 W JP 2019043523W WO 2020110643 A1 WO2020110643 A1 WO 2020110643A1
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Prior art keywords
film
thermoplastic resin
resin film
mass
film roll
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PCT/JP2019/043523
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English (en)
Japanese (ja)
Inventor
宏明 出井
正明 萩原
就明 藤井
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株式会社クラレ
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Priority to JP2020558253A priority Critical patent/JPWO2020110643A1/ja
Publication of WO2020110643A1 publication Critical patent/WO2020110643A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices

Definitions

  • the present invention relates to a film roll and a manufacturing method thereof.
  • a film made of a resin is useful as a material for a molded product, and among them, an acrylic resin film is suitable for use as a material for an optical member, a lighting member, a sign member, a decorative member, etc. due to its high transparency.
  • an acrylic resin film is strongly charged as shown in the charging sequence.
  • acrylic is more positive than triacetyl cellulose, polycarbonate, or vinyl chloride. It has been reported to be charged. During film formation and transportation, the film is strongly charged due to peeling from the cast roll and friction with the nip roller, which causes various problems.
  • Patent Document 1 As a method for removing static electricity, a method using a static eliminator has been reported so far.
  • Patent Document 1 a film in which wrinkles are suppressed during film storage and winding deviation during film winding is suppressed. Is disclosed.
  • Patent Document 2 discloses a method of manufacturing a protective film that reduces defects caused by dust being easily attached due to peeling charging and the like.
  • the present invention has been made in view of such circumstances, the charge state is uniform, sticking of the films, the film roll capable of suppressing the occurrence of dust collection and minute wrinkles, and the It is an object to provide a method for manufacturing a film roll.
  • the present invention provides the following [1] to [6].
  • [1] A film roll made of a thermoplastic resin film having a thickness of 250 ⁇ m or less, wherein the maximum and minimum surface potentials of the film roll measured at 50 mm intervals in the width direction of the film roll are both ⁇ 10 to A film roll having a voltage of +10 kV and a difference between the maximum value and the minimum value of the surface potential of 5 kV or less.
  • thermoplastic resin forming the thermoplastic resin film is a (meth)acrylic resin.
  • a method for producing a film roll which is a method for producing a film roll.
  • the discharge potential of the static eliminator which is disposed in front of the winding contact along the flow direction of the film and is located closest to the winding contact, is ⁇
  • the present invention it is possible to provide a film roll that has a uniform charged state and can suppress the sticking of films, the generation of dust and the generation of minute wrinkles, and a method for manufacturing the film roll. ..
  • FIG. 1 It is a schematic diagram showing an example of arrangement of a static eliminator in a process of static-eliminating a thermoplastic resin film in the manufacturing method of a film roll of the present invention. It is the graph which plotted the surface electric potential of the said film roll measured at 50 mm space
  • both the maximum value and the minimum value of the surface potential measured at intervals of 50 mm in the width direction of the film roll are ⁇ 10 to +10 kV. If the maximum surface potential of the film roll exceeds 10 kV, dust may be collected, and if the minimum surface potential of the film roll is less than -10 kV, dust may be collected. From such a viewpoint, the maximum value of the surface potential of the film roll is preferably 7 kV or less, more preferably 4 kV or less, and the minimum value of the surface potential of the film roll is preferably -7 kV or more, more preferably Is -4 kV or more. The maximum value and the minimum value of the surface potential of the film roll can be measured using an electrostatic potential measuring device, and specifically, can be measured by the method described in Examples.
  • the difference between the maximum value and the minimum value of the surface potential ((the maximum value of the surface potential)-(the minimum value of the surface potential) and the maximum value and the minimum value are the same) is 5 kV. It is below.
  • the difference between the maximum value and the minimum value of the surface potential of the film roll is larger than 5 kV, the distribution of the charge amount on the surface of the film roll becomes non-uniform, the sticking between the films in the film roll becomes strong, and the minute wrinkles increase. May occur.
  • the difference between the maximum value and the minimum value of the surface potential of the film roll is preferably 3.5 kV or less, more preferably 2.5 kV or less, and further preferably 1.5 kV or less. ..
  • the surface potential of the film roll needs to be controlled over the entire width. Since the discharge device may have different discharge potential control or different discharge capability in the width direction, the film surface potential may be different in the film width direction after passing through the discharge device. When a film roll is produced in this state, parts having different surface potentials stick to each other, which causes sticking of the films and minute wrinkles after storage. In order to suppress sticking between films and minute wrinkles, when the potential in the width direction is measured at intervals of 50 mm in the width direction over the entire width of the film roll, the maximum and minimum potentials are both -10 to +10 kV. Therefore, it is important that the difference between the maximum value and the minimum value of the surface potential is 5 kV or less.
  • the difference in surface potential between adjacent measurement points is preferably small, preferably 4 kV or less, more preferably 3 kV or less, even more preferably 2 kV or less.
  • the film roll of the present invention comprises a thermoplastic resin film having a thickness of 250 ⁇ m or less. If the thickness of the thermoplastic resin film constituting the film roll of the present invention exceeds 250 ⁇ m, the rigidity of the film is high, and sticking due to electrification and minute wrinkles are less likely to occur, but there is a cost problem. .. From such a viewpoint, the thickness of the thermoplastic resin film constituting the film roll of the present invention is preferably 20 to 250 ⁇ m, more preferably 20 to 200 ⁇ m, further preferably 30 to 150 ⁇ m, and More preferably, it is 50 to 100 ⁇ m. The thickness of the thermoplastic resin film can be measured with a micrometer, and specifically can be measured by the method described in Examples.
  • thermoplastic resin film which comprises the film roll of this invention consists of a thermoplastic resin composition, for example.
  • the thermoplastic resin contained in the thermoplastic resin composition and forming the matrix portion in the film is not particularly limited, and examples thereof include polycarbonate; polystyrene, styrene-acrylonitrile resin, styrene-maleic anhydride resin, styrene-maleimide resin, Aromatic vinyl-based resins such as styrene-based thermoplastic elastomers or hydrogenated products thereof; amorphous polyolefins, transparent polyolefins having a refined crystal phase, polyolefin-based resins such as ethylene-methyl methacrylate resin; (meth)acrylic Resin: Polyethylene terephthalate, polyester resin such as polyethylene terephthalate, polyethylene naphthalate, polyarylate partially modified with cyclohexane dimethanol or isophthalic acid; polyamide resin; polyimide
  • the (meth)acrylic resin (A) used as the thermoplastic resin forming the matrix portion in the thermoplastic resin film constituting the film roll of the present invention is a resin having a structural unit derived from a (meth)acrylic acid ester.
  • a polymer mainly containing a structural unit derived from methyl methacrylate is preferable.
  • the (meth)acrylic resin (A) is mainly composed of a structural unit derived from methyl methacrylate, the content of the structural unit derived from methyl methacrylate in the (meth)acrylic resin (A) depends on heat resistance.
  • the content is at least mass%, and all structural units may be structural units derived from methyl methacrylate.
  • the (meth)acrylic resin (A) may contain a structural unit derived from a monomer other than methyl methacrylate.
  • the other monomer is not particularly limited as long as it is copolymerizable with methyl methacrylate, and examples thereof include methyl acrylate, ethyl acrylate, n-propyl acrylate, iso-propyl acrylate, n-butyl acrylate, Iso-butyl acrylate, sec-butyl acrylate, tert-butyl acrylate, amyl acrylate, isoamyl acrylate, n-hexyl acrylate, 2-ethylhexyl acrylate, pentadecyl acrylate, dodecyl acrylate, acrylic Phenyl acid, benzyl acrylate, phenoxyethyl acrylate, 2-hydroxyethyl acrylate, 2-ethoxyethyl acrylate, glycid
  • Acid ester ethyl methacrylate, n-propyl methacrylate, iso-propyl methacrylate, n-butyl methacrylate, iso-butyl methacrylate, sec-butyl methacrylate, tert-butyl methacrylate, amyl methacrylate, isoamyl methacrylate.
  • Methacrylic acid esters other than methyl methacrylate such as glycidyl methacrylate, allyl methacrylate, cyclohexyl methacrylate, norbornyl methacrylate, isobornyl methacrylate; acrylic acid, methacrylic acid, maleic anhydride, maleic acid, itaconic acid, etc.
  • Unsaturated carboxylic acids or acid anhydrides such as ethylene, propylene, 1-butene, isobutylene and 1-octene; conjugated dienes such as butadiene, isoprene and myrcene; styrene, ⁇ -methylstyrene, p-methylstyrene, m -Aromatic vinyl compounds such as methylstyrene; acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, vinyl acetate, vinylpyridine, vinyl ketone, vinyl chloride, vinylidene chloride, vinylidene fluoride and the like.
  • olefins such as ethylene, propylene, 1-butene, isobutylene and 1-octene
  • conjugated dienes such as butadiene, isoprene and myrcene
  • styrene ⁇ -methylstyrene, p-methylstyrene, m
  • acrylic acid esters are preferable, and methyl acrylate, ethyl acrylate, n-propyl acrylate, iso-propyl acrylate, n-butyl acrylate, iso-butyl acrylate, and sec-butyl acrylate are more preferable.
  • the (meth)acrylic resin (A) used in the present invention may be used alone or in combination of two or more.
  • the (meth)acrylic resin (A) is a polymer containing a structural unit derived from methyl methacrylate and a structural unit derived from a compound having a ring structure in the molecule such as maleic anhydride. Good. By containing the structural unit derived from the compound having a ring structure in the molecule, the heat resistance of the (meth)acrylic resin (A) and the resulting film are improved.
  • the (meth)acrylic resin (A) contains a structural unit derived from a compound having a ring structure in the molecule, the total content thereof is preferably 1 to 40% by mass, more preferably 1 to 40% by mass. It is 20% by mass, more preferably 1 to 5% by mass.
  • the structural unit derived from the compound having a ring structure in the molecule includes a structural unit derived from a compound containing a >CH—O—C( ⁇ O)— group in the ring structure, —C( ⁇ O)—O—C
  • a structural unit derived from a compound having a ring structure in the molecule is a cyclic monomer having a polymerizable unsaturated carbon-carbon double bond such as maleic anhydride, N-substituted maleimide, etc. It may be contained in the (meth)acrylic resin (A) by polymerization or by intramolecular condensation cyclization of a part of the molecular chain of the (meth)acrylic resin (A) obtained by the polymerization. it can.
  • the (meth)acrylic resin (A) contains a structural unit derived from a monomer other than methyl methacrylate, its content is preferably 50% by mass or less, and 20% by mass or less. It is more preferable that the amount is 10% by mass or less, further preferably 5% by mass or less, and particularly preferably 2% by mass or less.
  • the glass transition temperature (Tg) of the (meth)acrylic resin (A) is preferably 80 to 140° C., more preferably 100 to 135° C., from the viewpoint of balance between heat resistance and moldability. , 105 to 130° C. is more preferable, and 105 to 125° C. is particularly preferable.
  • the glass transition temperature can be adjusted by changing the type or amount of the monomer copolymerized with methyl methacrylate, or by changing the stereoregularity according to the polymerization temperature or the like.
  • the glass transition temperature can be measured according to JIS K7121:2012. That is, the differential scanning calorimetry method was performed under the condition that the (meth)acrylic resin was once heated to 200° C., then cooled to 30° C. or lower, and then heated from 30° C. to 200° C. at 10° C./min.
  • the glass transition temperature of the (meth)acrylic resin can be determined as the midpoint glass transition temperature obtained from the DSC curve measured by the above and the DSC curve measured during the second temperature increase.
  • the stereoregularity of the (meth)acrylic resin (A) is not particularly limited, and for example, a (meth)acrylic resin having stereoregularity such as isotactic, heterotactic and syndiotactic can be used.
  • the weight average molecular weight of the (meth)acrylic resin (A) is preferably 60,000 to 150,000.
  • the weight average molecular weight is more preferably 85,000 to 120,000, and even more preferably 90,000 to 100,000.
  • the weight average molecular weight of the (meth)acrylic resin (A) can be measured by the method described in Examples.
  • the method for producing the (meth)acrylic resin (A) is not particularly limited, and can be obtained, for example, by polymerizing a monomer mainly containing methyl methacrylate.
  • the weight average molecular weight of the (meth)acrylic resin (A) can be adjusted by the amount of the polymerization initiator and the chain transfer agent.
  • the polymerization initiator used for producing the (meth)acrylic resin (A) is not particularly limited as long as it generates a reactive radical, and examples thereof include tert-hexyl peroxyisopropyl monocarbonate and tert-hexyl peroxy 2-.
  • Examples of the chain transfer agent used for producing the (meth)acrylic resin (A) include n-octyl mercaptan, n-dodecyl mercaptan, tert-dodecyl mercaptan, 1,4-butanedithiol, 1,6-hexanedithiol and ethylene.
  • Alkyl mercaptans such as pentaerythritol tetrakisthiopropionate, and the like.
  • monofunctional alkyl mercaptans such as n-octyl mercaptan and n-dodecyl mercaptan are preferred.
  • (meth)acrylic resin (A) a commercially available product may be used, for example, “Parapet H1000B” [MFR: 22 g/10 minutes (230° C., 37.3 N)], “Parapet GF” [MFR: 15 g /10 minutes (230° C., 37.3 N)], “parapet EH” [MFR: 1.3 g/10 minutes (230° C., 37.3 N)], “parapet HRL” [MFR: 2.0 g/10 minutes ( 230° C., 37.3 N)], “Parapet HRS” [MFR: 2.4 g/10 min (230° C., 37.3 N)] and “Parapet G” [MFR: 8.0 g/10 min (230° C., 37 .3 N)] [all are trade names, manufactured by Kuraray Co., Ltd.] and the like.
  • the thermoplastic resin film forming the film roll of the present invention may contain rubber particles (B).
  • the rubber particles (B) are preferably acrylic rubber particles (B-1) from the viewpoint of dispersibility and the like.
  • Acrylic rubber particles (B-1) will be described as an example of the rubber particles (B).
  • the acrylic rubber particles (B-1) have a multilayer structure having at least an elastic layer and an outer layer covering the elastic layer, from the viewpoints of dispersibility and transparency and mechanical properties of the obtained film. preferable. Further, from the viewpoint of improving impact resistance while keeping the hardness of the film high, it is more preferable to have a multilayer structure having an inner layer, an elastic layer covering the inner layer, and an outer layer covering the elastic layer.
  • the elastic layer of the acrylic rubber particles (B-1) used in the present invention has a structure unit derived from an alkyl acrylate ester and a structure derived from a conjugated diene monomer from the viewpoint of adhesion to other layers.
  • Crosslinked rubber polymer component containing 50% by mass or more of at least one monomer unit (I-1) selected from the group consisting of units (hereinafter, also simply referred to as “monomer unit (I-1)”) (I) is preferable, the crosslinked rubber polymer component (I) more preferably contains 60 to 99% by mass of the monomer unit (I-1), further preferably 70 to 95% by mass, It is even more preferable to contain 80 to 90% by mass.
  • Examples of the crosslinked rubber polymer component (I) include homopolymers of acrylic acid alkyl ester, 50% by mass or more of structural units derived from acrylic acid alkyl ester, and structural units derived from monomers other than acrylic acid alkyl ester. And 50% by mass or less, a homopolymer of a conjugated diene monomer, a copolymer having a structural unit derived from a conjugated diene monomer of 50% by mass or more, and the like.
  • a copolymer containing 50% by mass or more of the structural unit derived from the alkyl acrylate and 50% by mass or less of the structural unit derived from the monomer other than the alkyl acrylate. preferable.
  • copolymer having a conjugated diene monomer unit of 50% by mass or more examples include, for example, rubber particles described in JP-A-10-182755 and acrylic graft copolymer described in JP-A-62-151415. Etc.
  • the alkyl acrylate preferably has an alkyl group having 1 to 8 carbon atoms, more preferably 4 to 8 carbon atoms. Specifically, for example, methyl acrylate, ethyl acrylate, n-propyl acrylate, iso-propyl acrylate, n-butyl acrylate, iso-butyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, etc. Is mentioned. Among these, n-butyl acrylate and 2-ethylhexyl acrylate are preferable, and n-butyl acrylate is more preferable.
  • the crosslinked rubber polymer component (I) has a crosslinked structure.
  • the crosslinked structure may be formed by irradiation with an electron beam, or may be formed by using a polyfunctional monomer as the monomer of the crosslinked rubber polymer component (I).
  • a polyfunctional monomer as the monomer of the crosslinked rubber polymer component (I).
  • examples of such polyfunctional monomers include alkenyl esters of unsaturated carboxylic acids such as allyl (meth)acrylate and methallyl (meth)acrylate; dialkenyl esters of dibasic acids such as diallyl maleate; alkylene glycol di(meth) )
  • Examples include unsaturated carboxylic acid diesters of glycols such as acrylate.
  • alkenyl ester of unsaturated carboxylic acid is preferable, allyl (meth)acrylate is more preferable, and allyl methacrylate is further preferable.
  • the content of the polyfunctional monomer unit in the crosslinked rubber polymer component (I) is from the viewpoint of improving the mechanical strength of the acrylic rubber particles (B-1) by crosslinking and improving the impact resistance of the resin composition. From the viewpoint of balance with fluidity, it is preferably 0.01 to 5% by mass, more preferably 0.05 to 4% by mass, and further preferably 0.1 to 3% by mass.
  • the crosslinked rubber polymer component (I) preferably contains a structural unit derived from a monomer other than the alkyl acrylate and the polyfunctional monomer.
  • monomers include alkyl methacrylates such as methyl methacrylate and ethyl methacrylate; aromatic group-containing (meth)acrylates such as benzyl (meth)acrylate and phenyl (meth)acrylate; styrene and alkyl Examples thereof include styrene-based monomers such as styrene; unsaturated nitriles such as acrylonitrile and methacrylonitrile.
  • aromatic compounds are preferable from the viewpoint of adjusting the refractive index
  • styrene-based monomers and aromatic group-containing (meth)acrylic acid esters are more preferable
  • styrene-based monomers are further preferable
  • styrene is further preferable.
  • the content of the structural unit derived from the aromatic compound in the crosslinked rubber polymer component (I) is preferably 1 to 40% by mass, more preferably 5 to 30% by mass, from the viewpoint of the refractive index. More preferably, it is 10 to 20% by mass.
  • the elastic layer may contain a plurality of crosslinked rubber polymer components (I) having different compositions, and the elastic layer may contain components other than the crosslinked rubber polymer component (I).
  • the content of the crosslinked rubber polymer component (I) in the elastic layer is preferably 80% by mass or more, more preferably 90% by mass or more, and further preferably 100% by mass.
  • the acrylic rubber particles (B-1) preferably have an inner layer inside the elastic layer from the viewpoint of improving the mechanical properties of the film, that is, improving the impact resistance while maintaining high hardness. It is preferable to include a polymer component (II) containing 50% by mass or more of a structural unit derived from an alkyl methacrylate.
  • the polymer component (II) may have a covalent bond with the crosslinked rubber polymer component (I).
  • the content of the structural unit derived from the methacrylic acid alkyl ester in the polymer component (II) is preferably 60 to 99% by mass, more preferably 70 to 99% by mass, further preferably 80 to 99% by mass.
  • methacrylic acid alkyl ester examples include methyl methacrylate and ethyl methacrylate, and of these, methyl methacrylate is preferable.
  • the polymer component (II) preferably has a crosslinked structure in its molecule from the viewpoint of improving the mechanical strength of the acrylic rubber particles (B-1).
  • a crosslinked structure is preferably formed by using a polyfunctional monomer as the monomer of the polymer component (II).
  • the polyfunctional monomer include those similar to the above-mentioned crosslinked rubber polymer component (I). Among them, alkenyl ester of unsaturated carboxylic acid is preferable, allyl (meth)acrylate is more preferable, and allyl methacrylate is more preferable.
  • the polyfunctional monomer unit in the polymer component (II) is preferably 0.1 to 5% by mass, more preferably 0.15 to 1% by mass, and further preferably 0 from the viewpoint of mechanical properties. 18 to 0.5% by mass.
  • the polymer component (II) may have a unit derived from a monomer other than the methacrylic acid alkyl ester and the polyfunctional monomer.
  • monomers include alkyl acrylates such as methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, and 2-ethylhexyl acrylate; styrene-based monomers such as styrene and alkylstyrene; Examples thereof include unsaturated nitriles such as acrylonitrile and methacrylonitrile.
  • alkyl acrylates are preferable, and methyl acrylate is more preferable.
  • the content of the structural unit derived from a monomer other than the methacrylic acid alkyl ester in the polymer component (II) is preferably 40% by mass or less, more preferably 30% by mass or less, and further preferably 20% by mass or less. It is at most mass%, more preferably at most 15 mass%, particularly preferably at most 10 mass%.
  • the inner layer may contain a plurality of polymer components (II) having different compositions, and may contain components other than the polymer component (II). However, the content of the polymer component (II) in the inner layer is preferably 80% by mass or more, more preferably 90% by mass or more, and further preferably 100% by mass.
  • the mass ratio of the polymer component (II) to the crosslinked rubber polymer component (I) [polymer component (II)/crosslinked rubber polymer component (I)] is preferably 5/95 to 90/10, and It is preferably 10/90 to 70/30, more preferably 20/80 to 60/40, and even more preferably 30/70 to 50/50.
  • the mass ratio is calculated from the mass ratio of the monomer mixture of these polymer components.
  • the outer layer constituting the acrylic rubber particles (B-1) contains 75% by mass or more of methyl methacrylate unit and contains the hard polymer component (III) graft-bonded to the crosslinked rubber polymer component (I). Is preferred.
  • the hard polymer component (III) has a methyl methacrylate unit content of 75 to 99 mass. % And acrylic acid ester units 1 to 25% by mass, more preferably 80 to 97% by mass of methyl methacrylate units and 3 to 20% by mass of acrylic acid ester units, and more preferably 90% of methyl methacrylate units. It is more preferable to contain ⁇ 96% by mass and 4 to 10% by mass of acrylic acid ester unit.
  • ester group of the acrylic ester used for the hard polymer component (III) examples include an alkyl group, a cycloalkyl group, a phenyl group and their derivatives having 1 to 12 carbon atoms.
  • Specific acrylic acid esters include, for example, methyl acrylate, ethyl acrylate, n-propyl acrylate, iso-propyl acrylate, n-butyl acrylate, iso-butyl acrylate, tert-butyl acrylate, acrylic acid.
  • Examples thereof include 2-ethylhexyl, n-octyl acrylate, n-lauryl acrylate, 2-hydroxyethylhexyl acrylate, cyclohexyl acrylate, isobornyl acrylate, tetrahydrofuryl acrylate, benzyl acrylate, phenyl acrylate and the like.
  • methyl acrylate, n-butyl acrylate, cyclohexyl acrylate, and benzyl acrylate are preferable from the viewpoint of the balance of adhesion with active energy ray-curable hard coat and adhesive, heat resistance, handleability, and the like. preferable.
  • the outer layer may contain a plurality of hard polymer components (III) having different compositions, or may contain components other than the hard polymer component (III).
  • the content of the hard polymer component (III) in the outer layer is preferably 80% by mass or more, more preferably 90% by mass or more, and further preferably 100% by mass.
  • the hard polymer component (III) is preferably graft-bonded to the crosslinked rubber polymer component (I).
  • the graft ratio of the acrylic rubber particles (B-1) is preferably 11 to 33%, more preferably 15 to 30%, still more preferably 20 to 30%.
  • the graft ratio is defined by the mass ratio of the hard polymer component (III) which is graft-bonded to the crosslinked rubber polymer component (I), and when the graft ratio is 11% or more, the heat resistance is improved. % Or less, the adhesion with the active energy ray-curable resin is improved.
  • the mass of the crosslinked rubber polymer component (I) is the total mass of the monomers of the crosslinked rubber polymer component (I) in the polymerization.
  • the mass of the crosslinked rubber polymer component (I) in the above formula (a) is equal to the crosslinked rubber polymer component (I).
  • the proportion of the hard polymer component (III) in the acrylic rubber particles (B-1) is preferably 5 to 50% by mass, more preferably 10 to 30% by mass, further preferably 10 to 25% by mass, It is particularly preferably 15 to 22% by mass.
  • the ratio of the hard polymer component (III) in the acrylic rubber particles (B-1) is graft-bonded to the crosslinked rubber polymer component (I) by 100% by mass.
  • the graft ratio of the acrylic rubber particles (B-1) can be set within the above range, and the degree of freedom of the blending amount of the graft-bonding polyfunctional monomer increases.
  • the degree of swelling of the acrylic rubber particles (B-1) due to the impregnation with the active energy ray-curable resin can be controlled more accurately, and it becomes easier to achieve both adhesion and suppression of whitening.
  • the apparent number average molecular weight of the hard polymer component (III) is preferably 10,000 to 100,000, more preferably 15,000 to 60,000, and further preferably 30,000 to 50,000. Is. When the apparent number average molecular weight is 10,000 or more, heat resistance is improved, and when it is 100,000 or less, adhesion is improved.
  • the apparent number average molecular weight of the hard polymer component (III) is the same as that of the crosslinked rubber polymer component when the monomer mixture at the time of producing the hard polymer component (III) of the acrylic rubber particles (B-1) is produced.
  • the hard polymer component (A-1) of the acrylic rubber particles (B-1) is provided under the condition that (I) does not exist, and the crosslinked rubber polymer component (I) and the polymer component (II) do not exist when the inner layer is present.
  • the apparent number average molecular weight can be adjusted by the blending amount of a chain transfer agent such as mercaptan.
  • the average particle size of the acrylic rubber particles (B-1) is preferably 0.03 to 0.50 ⁇ m, more preferably 0.07 to 0.40 ⁇ m, and 0 from the viewpoint of impact resistance. More preferably, it is from 0.15 to 0.30 ⁇ m.
  • the average particle diameter in the present specification is an arithmetic average value in a volume-based particle diameter distribution measured by a light scattering method, and specifically, it can be obtained by the method described in Examples.
  • the polymerization initiator used for producing the acrylic rubber particles (B-1) is not particularly limited as long as it generates a reactive radical, and examples thereof include water-soluble inorganic initiators such as potassium persulfate and ammonium persulfate.
  • Examples of the chain transfer agent used for producing the acrylic rubber particles (B-1) include n-octyl mercaptan, n-dodecyl mercaptan, tert-dodecyl mercaptan, 1,4-butanedithiol, 1,6-hexanedithiol and ethylene.
  • Alkyl mercaptans such as pentaerythritol tetrakisthiopropionate, and the like.
  • monofunctional alkyl mercaptans such as n-octyl mercaptan and n-dodecyl mercaptan are preferred.
  • the content of the rubber particles (B) in the thermoplastic resin film constituting the film roll of the present invention is 2 to 95% by mass based on the mass of the thermoplastic resin film from the viewpoint of moldability and mechanical properties. It is more preferably from 3 to 90% by mass, even more preferably from 4 to 85% by mass, even more preferably from 5 to 84% by mass, particularly preferably from 10 to 83% by mass. ..
  • the thermoplastic resin film that constitutes the film roll of the present invention may contain various additives as required, as long as the effects of the present invention are not impaired.
  • the type of additive is not particularly limited, and examples thereof include ultraviolet absorbers, polymer processing aids, light stabilizers, antioxidants, heat stabilizers, lubricants, antistatic agents, pigments, dyes, delustering agents, and fillers. , Impact resistance assistants, plasticizers and the like.
  • the additive one kind may be used alone, or two kinds or more may be used in optional ratio in combination.
  • the additive may be an organic compound or an inorganic compound, but the organic compound is preferable from the viewpoint of dispersibility in the resin composition.
  • thermoplastic resin film forming the film roll of the present invention can be used for the following various applications.
  • thermoplastic resin film constituting the film roll of the present invention is suitable for an optical film because of its excellent heat resistance and optical properties, and can be used for various optical members.
  • image fields such as cameras, VTRs, shooting lenses for projectors, viewfinders, filters, prisms, Fresnel lenses, lens covers; lens fields such as pickup lenses for optical disks in CD players, DVD players, MD players, etc.; CDs, DVDs Optical recording field for optical disks such as MD, MD; Front panel of liquid crystal screen of terminals such as mobile phones, smartphones, tablets; Vehicle fields such as automobile headlight tail lamp lens, inner lens, instrument cover, sunroof, etc.; Lighting lens; Liquid crystal Film for liquid crystal display such as light guide plate, diffuser plate, back sheet, reflection sheet, polarizing film transparent resin sheet, retardation film, light diffusion film, prism sheet, optically isotropic film, polarizer protective film, transparent conductive film, etc.
  • liquid crystal display devices such as: Information equipment fields such as surface protection films; Around organic EL devices as organic EL films; Optical communication fields such as optical fibers, optical switches, optical connectors; Optical lenses; Optical discs and other known optics It can be applied to specific purposes.
  • thermoplastic resin film constituting the film roll of the present invention is used as a laminated film in which at least one surface is laminated with a layer made of a metal and/or a metal oxide, another layer such as another thermoplastic resin layer.
  • a layer made of a metal and/or a metal oxide another layer such as another thermoplastic resin layer.
  • Another layer such as another thermoplastic resin layer.
  • the method of laminating other layers is not particularly limited, and they can be bonded directly or through an adhesive layer or the like.
  • the other layer may be a single layer or a laminate of a plurality of layers.
  • thermoplastic resin film forming the film roll of the present invention may be printed on at least one surface.
  • patterns, colors such as pictures, characters, and figures are added.
  • the pattern may be chromatic or achromatic.
  • thermoplastic resin film forming the film roll of the present invention can be used by laminating it on metal, plastic or the like.
  • laminating molding wet laminating in which an adhesive is applied to a metal plate such as a steel plate, and then the film is placed on the metal plate and dried and bonded, dry laminating, extrusion laminating, hot melt laminating and the like. Can be mentioned.
  • a film is placed in a mold, and insert molding or laminate injection press molding in which a resin is filled by injection molding, or a film is preformed and then placed in a mold, Examples include in-mold molding in which a resin is filled by injection molding.
  • Laminates containing a thermoplastic resin film constituting the film roll of the present invention automotive interior materials, coating alternative applications such as automotive exterior materials, window frames, bathroom equipment, wallpaper, building material members such as flooring materials, daily sundries Products, housings for furniture and electric equipment, housings for office automation equipment such as facsimiles, laptops, copiers, front plates of liquid crystal screens of terminals such as mobile phones, smartphones, tablets, lighting lenses, automobile headlights, optical lenses , Optical fiber, optical disk, optical member such as liquid crystal light guide plate, electric or electronic device parts, medical supplies requiring sterilization, toys or recreation items, etc.
  • thermoplastic resin composition of the thermoplastic resin film constituting the film roll of the present invention
  • thermoplastic resin for example, the thermoplastic resin and, if necessary, rubber particles and various additives. And the like.
  • the apparatus for melt kneading include a kneader ruder, a twin-screw extruder, a single-screw extruder, a mixing roll, and a Banbury mixer.
  • a twin-screw extruder is preferable from the viewpoint of kneading properties, and a twin-screw extruder with a vent is more preferable from the viewpoint of suppressing coloration.
  • the vented twin-screw extruder is preferably operated under reduced pressure or with nitrogen flowing.
  • the shear rate at the time of melt-kneading is preferably 10 to 1000/sec.
  • the temperature at the time of kneading is preferably 110 to 300°C, more preferably 180 to 300°C, and further preferably 230 to 270°C.
  • the thermoplastic resin composition melt-kneaded by an extruder is extruded in a strand shape and can be cut into pellets by a pelletizer or the like.
  • the thermoplastic resin film forming the film roll of the present invention is obtained by molding the thermoplastic resin composition.
  • the molding method is not particularly limited, and known molding methods such as extrusion molding (T die method, etc.), injection molding, compression molding, inflation molding, blow molding, calender molding, cast molding, and vacuum molding can be adopted.
  • the extrusion molding method is preferably adopted. According to the extrusion molding method, particularly the T-die method, it is possible to obtain a thermoplastic resin film having improved toughness, excellent handleability, and excellent balance between toughness and surface hardness and rigidity.
  • the extruder used for the extrusion molding method, particularly the T-die method preferably has a single screw or a twin screw.
  • thermoplastic resin film from the viewpoint of suppressing coloring of the thermoplastic resin film, it is preferable to perform melt extrusion under reduced pressure using a vent. Further, from the viewpoint of obtaining a thermoplastic resin film having a uniform thickness, it is preferable to connect a gear pump to the extruder and further perform melt extrusion through a polymer filter in order to reduce fisheye defects. Further, from the viewpoint of suppressing oxidative deterioration, it is preferable to perform melt extrusion under a nitrogen stream.
  • the temperature of the material discharged from the extruder is preferably 230 to 290°C, more preferably 240 to 280°C.
  • the extruded film-like molten resin is drawn and sandwiched between the mirror roll and/or the mirror belt.
  • Both the mirror surface roll and the mirror surface belt are preferably made of metal.
  • the linear pressure between the mirror surface roll and/or the mirror surface belt is preferably 10 N/mm or more, and more preferably 30 N/mm or more, from the viewpoint of surface smoothness.
  • the surface temperature of the mirror surface roll and/or the mirror surface belt is preferably 60° C. or higher, and more preferably 70° C. or higher from the viewpoint of surface smoothness, haze, appearance and the like. Further, it is preferably 130° C. or lower, and more preferably 100° C. or lower.
  • the thermoplastic resin film constituting the film roll of the present invention may be formed into a film shape and then subjected to a stretching treatment.
  • the stretching treatment improves the mechanical strength of the thermoplastic resin film, making it less likely to crack.
  • the stretching method is not particularly limited, and includes a simultaneous biaxial stretching method, a sequential biaxial stretching method, a tuber stretching method, a rolling method and the like.
  • the temperature during stretching is preferably 5° C. or higher than the glass transition temperature of the thermoplastic resin film, and preferably 40° C. or higher than the glass transition temperature of the thermoplastic resin film.
  • the stretching speed is preferably 100 to 5000%/min.
  • the thermoplastic resin film may be colored.
  • a coloring method for example, a method of coloring the material itself before film formation by incorporating a pigment or dye into the material forming the thermoplastic resin film; immersing the thermoplastic resin film in a liquid in which the dye is dispersed Examples include dyeing methods for coloring.
  • the method for producing the film roll of the present invention is not particularly limited, but because the film roll of the present invention can be obtained more efficiently, etc., the thermoplastic resin film produced as described above is wound on a film roll. At that time, a static eliminator is arranged at a position within 5 m to the winding contact point of the thermoplastic resin film along the flow direction of the film to pre-staticize the thermoplastic resin film before being wound on the film roll, and the static eliminator concerned. It is preferable to adopt a method in which the distance between the discharge part and the thermoplastic resin film is 30 to 100 mm.
  • the present invention is a method for manufacturing a film roll made of a thermoplastic resin film having a thickness of 250 ⁇ m or less, wherein the static eliminator is located within 5 m from the winding contact point of the thermoplastic resin film along the flow direction of the film.
  • Having a step of destaticizing the thermoplastic resin film by arranging, and a step of winding up the thermoplastic resin film destaticized in the step, and the distance between the discharge part of the destaticizing device and the thermoplastic resin film is It includes a method for producing a film roll having a thickness of 30 to 100 mm.
  • FIG. 1 is a schematic view showing an arrangement example of a static eliminator in a step of static eliminating a thermoplastic resin film in the method for producing a film roll of the present invention.
  • the arrow in FIG. 1 indicates the flow direction of the film.
  • the thermoplastic resin film 1 obtained as described above is transported by the transport roll 2 and wound into a roll to form a film roll 4.
  • the static eliminator 3 is arranged at a position within 5 m from the winding contact P of the thermoplastic resin film 1 along the flow direction of the film, and neutralizes the thermoplastic resin film 1.
  • the static eliminator when the static eliminator is arranged at a position more than 5 m away from the winding contact point of the thermoplastic resin film along the flow direction of the film, the static eliminated thermoplastic resin film rubs against a transport roll or the like during transport. There is a possibility that the film roll may be charged again and dust and minute wrinkles may occur on the obtained film roll. Further, the maximum value and the minimum value of the surface potential of the film roll, and the difference between the maximum value and the minimum value of the surface potential may be out of the above range. From such a viewpoint, the static eliminator is preferably arranged within 4 m to the winding contact of the thermoplastic resin film along the flow direction of the film, more preferably within 3 m, and more preferably within 2 m. More preferably.
  • the static eliminator is installed at the position of the winding contact of the thermoplastic resin film or at the position after the winding, the static elimination effect may be limited to only one side, which is not preferable from the viewpoint of the uniformity of the charged state. ..
  • the static eliminator is preferably installed 0.05 m or more in front of the winding contact point of the thermoplastic resin film along the flow direction of the film, more preferably 0.2 m or more, and more preferably 0.2 m or more. It is more preferable to install them at a distance of 5 m or more.
  • the distance between the static eliminator and the winding contact may be the distance from the position closest to the winding contact of the discharge part of the static eliminator to the position corresponding to the winding contact along the film flow direction.
  • the distance between the discharge part of the static eliminator and the thermoplastic resin film is 30 to 100 mm, preferably 40 to 70 mm.
  • the distance between the discharge part of the static eliminator and the thermoplastic resin film is less than 30 mm, uneven static erasing occurs in the width direction of the film in the case of the DC static eliminator and in the flow direction of the film in the case of the AC static eliminator.
  • the generated wind causes vibration of the film, and a winding failure is likely to occur.
  • the distance between the discharge part of the static eliminator and the thermoplastic resin film exceeds 100 mm, the static elimination of the thermoplastic resin film becomes non-uniform and the thermoplastic resin films tend to stick to each other.
  • the processing time for static elimination becomes long, and there is a possibility that the charge amount may increase when the thermoplastic resin film is wound at high speed.
  • the distance between the discharge portion of the static eliminator and the thermoplastic resin film within the above range, the maximum and minimum values of the surface potential of the film roll, and the difference between the maximum and minimum values of the surface potential are as described above. Within the range, the effect of the present invention can be exhibited. Further, by setting the distance between the discharge part of the static eliminator and the thermoplastic resin film to be 30 mm or more, it is possible to suppress unevenness of static erasing, and it is possible to suppress generation of dust on the obtained film roll. ..
  • a DC type static eliminator As the static eliminator, a DC type static eliminator, an AC type static eliminator, a pulse type static eliminator, etc. can be used, and as other static eliminators, ion air blowing, static eliminator brush, static eliminator, vapor space humidifier, etc. are used. You can also As a preferable method of static elimination, there are a DC static eliminator, an AC static eliminator and a pulse static eliminator, which can reduce the charge amount of the thermoplastic resin film in a short time. Further, by supplying air to these static eliminators, it is possible to assist the diffusion of ions generated from the static eliminators, and to eliminate static electricity at higher speed.
  • the static elimination method may be carried out by using one kind alone, or a combination of plural kinds. Further, one type of static elimination method may be performed plural times.
  • the discharge potential of the static eliminator (preferably the static eliminator located at the most downstream) arranged in front of the winding contact along the flow direction of the film and arranged at the position closest to the winding contact is preferably ⁇ It is 20 to +20 kV.
  • the discharge potential of each static eliminator is preferably ⁇ 20 to +20 kV.
  • the static elimination device used for the static elimination of at least one of them is arranged within 5 m to the winding contact point of the thermoplastic resin film along the flow direction of the film.
  • the location of the static eliminator is not particularly limited, but from the viewpoint of more effectively exerting the effects of the present invention, it is preferably within 50 m to the winding contact point of the thermoplastic resin film along the film flow direction, and 30 m It is more preferably within the range.
  • each charge removal may be performed on the same surface of the thermoplastic resin film or on different surfaces thereof.
  • the static elimination device used may be the same or different.
  • the transport speed of the film in the static elimination step is preferably 5 to 100 m/min, more preferably 10 to 50 m/min, and further preferably 15 to 30 m/min.
  • the film roll of the present invention can be obtained by winding the thermoplastic resin film, which has been neutralized in this step, into a roll.
  • the film roll of the present invention has a uniform charged state, and can prevent films from sticking to each other, dust collection, and fine wrinkles.
  • the maximum value and the minimum value of the surface potential of the film roll can be measured using an electrostatic potential measuring device, and specifically, can be measured by the method described in Examples.
  • the diameter of the film roll of the present invention is preferably 300 to 1000 mm, more preferably 400 to 700 mm. When the diameter of the film roll is within the above range, the effect of the present invention is easily exhibited.
  • the present invention will be described more specifically below with reference to Examples and Comparative Examples.
  • the present invention is not limited to the examples below. Further, the present invention includes all modes in which the items representing technical features such as characteristic values, forms, manufacturing methods, and uses described in the above-mentioned embodiment and examples below are arbitrarily combined.
  • Film thickness Using a film thickness meter (manufactured by Mitutoyo Co., Ltd., high precision Digimatic Micrometer MDH-25M), the film width direction was uniformly measured at 5 points. The average value was used as the film thickness.
  • the weight average molecular weight (Mw) was determined by GPC (gel permeation chromatography) in terms of standard polystyrene equivalent molecular weight.
  • the measuring device and conditions are as follows. ⁇ Device: GPC device "HLC-8320" manufactured by Tosoh Corporation ⁇ Separation column: Tosoh Co., Ltd. "TSKgel SuperMultipore HZM-M” and “Super HZ4000” are directly connected. Detector: Tosoh Co., Ltd. "RI-8020”.
  • ⁇ Eluent Tetrahydrofuran
  • Eluent flow rate 0.35 mL/min
  • ⁇ Sample concentration 8 mg/10 mL
  • Column temperature 40°C
  • the temperature of the (meth)acrylic resin (A-1) is once raised to 200° C., then cooled to 30° C. or lower, and then 30° C. to 200° C. at 10° C./min.
  • the DSC curve is measured by a differential scanning calorimetry method under the condition of raising the temperature, and the midpoint glass transition temperature obtained from the DSC curve measured at the time of the second heating is calculated as the (meth)acrylic resin (A-1 ) Glass transition temperature.
  • the average particle size is measured at 25° C. by using a laser diffraction/scattering particle size distribution measuring device (manufactured by Horiba, Ltd., device name “LA-950V2”) after diluting latex containing sample particles 200 times. The diluted solution was analyzed and the particle size was measured. At this time, the absolute refractive indexes of the acrylic rubber particles (B-1) and water were set to 1.4900 and 1.3333, respectively.
  • An electrostatic potential measuring device (digital electrostatic potential measuring device KSD-1000 manufactured by Kasuga Denki Co., Ltd.) was placed at a position 100 mm away from the surface of the film roll in the radial direction.
  • the electrostatic potential measuring device measured the surface potential of a film roll having a total width of 1450 mm at 29 points at 50 mm intervals in the width direction of the film roll.
  • the difference (potential difference) (maximum potential-minimum potential) was determined from the maximum value (maximum potential) and the minimum value (minimum potential).
  • the mixed liquid and the raw material liquid (total of 9000 kg) were charged into a pressure resistant polymerization tank, and the temperature was raised to 70° C. to start the polymerization reaction while stirring in a nitrogen atmosphere. After 3 hours from the start of the polymerization reaction, the temperature was raised to 90° C. and stirring was continued for 1 hour to obtain a liquid in which the bead-like copolymer was dispersed. Although some polymer adhered to the wall of the polymerization tank or the stirring blade, the polymerization reaction proceeded smoothly without foaming.
  • the obtained copolymer dispersion was washed with an appropriate amount of ion-exchanged water, the bead-shaped copolymer was taken out by a bucket centrifuge, and dried in a hot air dryer at 80° C. for 12 hours to give a bead-shaped (meta )
  • An acrylic resin (A-1) was obtained.
  • the obtained (meth)acrylic resin (A-1) had a methyl methacrylate unit content of 99.3% by mass, a methyl acrylate unit content of 0.7% by mass, and a weight average molecular weight (Mw ) Was 92,000 and the glass transition temperature was 120°C.
  • the latex containing the acrylic rubber particles (B-1) was obtained by the above operation, the latex containing the acrylic rubber particles (B-1) was frozen and coagulated. Then, it was washed with water and dried to obtain acrylic rubber particles (B-1). The particles had an average particle diameter of 0.23 ⁇ m and a graft ratio of 23%.
  • Example 1 80 parts by mass of the (meth)acrylic resin (A-1) and 20 parts by mass of the acrylic rubber particles (B-1) are mixed by a Henschel mixer, and a twin screw extruder with a vent having a screw diameter of 58 mm set to 230° C. A pellet of the thermoplastic resin composition was obtained using a machine. The pellets are supplied to a hopper of a single-screw extruder with a vent, melt-kneaded at 260° C., passed through a gear pump, a filter device, and a static mixer in this order, and formed into a film from a T die (die width 1700 mm) with a lip opening of 1 mm.
  • thermoplastic resin film After peeling the thermoplastic resin film from the final metal rigid roll, the thermoplastic resin film is conveyed at a speed of 20 m/min, and at a position of 40 m to the winding contact point of the thermoplastic resin film along the flow direction of the film.
  • a direct current static eliminator bar type static eliminator KDB-1800/KD-309BS manufactured by Kasuga Electric Co., Ltd.
  • the discharge electrode needle is made of tungsten at a distance of 50 mm in the direction perpendicular to the surface of the resin film. (Static elimination) was installed to eliminate static electricity from the thermoplastic resin film.
  • thermoplastic resin film is transported, and a distance of 50 mm is provided in a direction perpendicular to the transport surface of the thermoplastic resin film at a position of 2 m to the winding contact along the flow direction of the film, and the discharge electrode is formed.
  • An AC static eliminator (smart AC ionizer ASIBS-1800, manufactured by Kasuga Denki Co., Ltd.) with a needle of tungsten (3rd static eliminator) was installed, and the ion balance of the AC static eliminator was set to neutral (N), from the inner surface of the film winding.
  • N neutral
  • the film was wound into a roll to obtain a film roll made of a thermoplastic resin film having a thickness of 80 ⁇ m.
  • the maximum potential of the obtained film roll was 2 kV, the minimum potential was 1 kV, and the potential difference between the maximum potential and the minimum potential was 1 kV.
  • the evaluation results are shown in Table 1. All of the static eliminators used had a discharge potential of -20 to +20 kV.
  • Example 2 A film roll was obtained in the same manner as in Example 1 except that the ion balance of the third charge removal was negative. The evaluation results are shown in Table 1. Moreover, the graph which plotted the surface potential in each measurement location was shown in FIG.
  • Example 3 A film roll was obtained in the same manner as in Example 1 except that the ion balance of the third charge removal was positive. The evaluation results are shown in Table 1. Moreover, the graph which plotted the surface potential in each measurement location was shown in FIG.
  • Example 4 A film roll was obtained in the same manner as in Example 1 except that the second charge removal was not performed. The evaluation results are shown in Table 1. Moreover, the graph which plotted the surface potential in each measurement location was shown in FIG.
  • Example 5 A film roll was obtained in the same manner as in Example 1 except that the distance from the static eliminator for the third static eliminator to the winding contact was changed to 5 m along the flow direction of the film. The evaluation results are shown in Table 1.
  • Example 6 A film roll was obtained in the same manner as in Example 1 except that the distance from the static eliminator for the third static eliminator to the winding contact was changed to 0.3 m along the flow direction of the film. The evaluation results are shown in Table 1.
  • Example 1 A film roll was obtained in the same manner as in Example 1 except that the distance from the static eliminator for the third static eliminator to the winding contact was changed to 10 m along the flow direction of the film. The evaluation results are shown in Table 1.
  • Example 2 A film roll was obtained in the same manner as in Example 1 except that the distance from the static eliminator for the third static eliminator to the winding contact was changed to 15 m along the flow direction of the film. The evaluation results are shown in Table 1.
  • Example 3 (Comparative example 3) Example 1 except that the distance from the static eliminator of the third static eliminator to the winding contact was changed to 3 m along the flow direction of the film, and the distance from the discharge part of the static eliminator to the surface of the thermoplastic resin film was changed to 10 mm. A film roll was obtained in the same manner. The evaluation results are shown in Table 1. Moreover, the graph which plotted the surface potential in each measurement location was shown in FIG.
  • Example 4 In Example 1, except that the distance from the static eliminator for the third static eliminator to the winding contact was changed to 3 m and the distance from the discharge part of the static eliminator to the surface of the thermoplastic resin film was changed to 20 mm along the flow direction of the film. A film roll was obtained in the same manner as in Example 1. The evaluation results are shown in Table 1.
  • the maximum and minimum surface potentials of the film rolls are both ⁇ 10 to +10 kV, and the film rolls of Examples 1 to 6 in which the difference between the maximum and minimum surface potentials is 5 kV or less are all There were few fine wrinkles immediately after winding and after storage, and there was little sticking of films to each other or adhesion of dust.

Landscapes

  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Winding Of Webs (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

L'invention concerne un rouleau de film comprenant un film de résine thermoplastique d'une épaisseur inférieure ou égale à 250 µm. La valeur maximale et la valeur minimale du potentiel de surface du rouleau de film mesurées à intervalles dans le sens de la largeur de 50 mm vont de -10 à +10 kV, et la différence entre la valeur maximale et la valeur minimale du potentiel de surface est inférieure ou égale à 5 kV. Ledit procédé de fabrication est conçu pour fabriquer un rouleau de film comprenant un film de résine thermoplastique d'une épaisseur inférieure ou égale à 250 µm, le procédé comprenant les étapes suivantes : le positionnement d'un dispositif antistatique dans un rayon de 5 m d'un point de contact d'enroulement et la neutralisation de la charge sur le film de résine thermoplastique ; et l'enroulement du film de résine thermoplastique neutralisé. La distance entre une unité de décharge du dispositif antistatique et le film de résine thermoplastique est comprise entre 30 et 100 mm.
PCT/JP2019/043523 2018-11-30 2019-11-06 Rouleau de film et procédé de fabrication d'un tel rouleau de film WO2020110643A1 (fr)

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JP2002140811A (ja) * 2000-11-01 2002-05-17 Toray Ind Inc 磁気記録媒体用ポリエステルフィルム及び該フィルムロール
JP2002240995A (ja) * 2001-02-14 2002-08-28 Toray Ind Inc 絶縁性シートロール体の製造方法及び巻取装置並びにその製品
JP2003171038A (ja) * 2001-05-23 2003-06-17 Toray Ind Inc 巻取装置およびシートの製造方法
JP2008081274A (ja) * 2006-09-28 2008-04-10 Toray Ind Inc ウェブのしわ伸ばし装置およびウェブロール体製造方法
WO2013084988A1 (fr) * 2011-12-07 2013-06-13 東レバッテリーセパレータフィルム株式会社 Corps de rouleau à membrane microporeuse et son procédé de fabrication de celui-ci

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WO2015104940A1 (fr) * 2014-01-07 2015-07-16 コニカミノルタ株式会社 Film d'ester de cellulose et procédé de fabrication de film d'ester de cellulose
JP6463192B2 (ja) * 2015-03-03 2019-01-30 リンテック株式会社 粘着剤層付き光学フィルム
JP6100876B1 (ja) * 2015-10-02 2017-03-22 住友化学株式会社 偏光板用保護フィルム
JP6837282B2 (ja) * 2016-01-25 2021-03-03 リンテック株式会社 粘着剤層付き光学フィルム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002140811A (ja) * 2000-11-01 2002-05-17 Toray Ind Inc 磁気記録媒体用ポリエステルフィルム及び該フィルムロール
JP2002240995A (ja) * 2001-02-14 2002-08-28 Toray Ind Inc 絶縁性シートロール体の製造方法及び巻取装置並びにその製品
JP2003171038A (ja) * 2001-05-23 2003-06-17 Toray Ind Inc 巻取装置およびシートの製造方法
JP2008081274A (ja) * 2006-09-28 2008-04-10 Toray Ind Inc ウェブのしわ伸ばし装置およびウェブロール体製造方法
WO2013084988A1 (fr) * 2011-12-07 2013-06-13 東レバッテリーセパレータフィルム株式会社 Corps de rouleau à membrane microporeuse et son procédé de fabrication de celui-ci

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