WO2021152962A1 - 記録再生用多層膜の製造方法、及び、記録再生用多層膜の製造装置 - Google Patents

記録再生用多層膜の製造方法、及び、記録再生用多層膜の製造装置 Download PDF

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Publication number
WO2021152962A1
WO2021152962A1 PCT/JP2020/042739 JP2020042739W WO2021152962A1 WO 2021152962 A1 WO2021152962 A1 WO 2021152962A1 JP 2020042739 W JP2020042739 W JP 2020042739W WO 2021152962 A1 WO2021152962 A1 WO 2021152962A1
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Prior art keywords
film
roller
recording
coating
polygonal
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PCT/JP2020/042739
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English (en)
French (fr)
Japanese (ja)
Inventor
敏弘 樋口
宮川　直康
佐野　晃正
Original Assignee
パナソニックＩｐマネジメント株式会社
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Priority to CN202080046308.3A priority Critical patent/CN114026639A/zh
Priority to JP2021574474A priority patent/JPWO2021152962A1/ja
Publication of WO2021152962A1 publication Critical patent/WO2021152962A1/ja

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Definitions

  • the present disclosure relates to a method for manufacturing a multilayer film for recording and reproduction, and an apparatus for manufacturing a multilayer film for recording and reproduction.
  • Patent Documents 1 and 2 As a method for producing a laminated film with a Roll-to-Roll (R2R) type, a coextrusion method and a method of repeating coating and curing are known (Patent Documents 1 and 2).
  • the co-extrusion method can only use thermoplastic materials, and in addition, it is necessary to consider the solubility of the dye and the solubility of the two layers of materials to be laminated. Therefore, the coextrusion method has a problem that the range of material selection is very narrow.
  • the method of repeating coating and drying expands the range of material selection, it is necessary to repeat coating and curing when forming multiple layers, or to prepare a large number of raw materials and bond them by roll lamination or the like to form multiple layers. There is. Therefore, the method of repeating coating and drying requires a large-scale device, and has a problem that it is very difficult to achieve both cost and yield.
  • the purpose of this disclosure is to provide a technique for efficiently manufacturing a multilayer film for recording and reproduction.
  • the method for producing a multilayer film for recording and reproduction includes a coating step of applying a liquid containing an ultraviolet curable resin and whose optical characteristics change by irradiation with light to one surface of a film through which light is transmitted.
  • a drying step of drying the liquid coated on the film by the coating step, and a polygonal roller having a polygonal cross section perpendicular to the rotation axis are rotated to coat the liquid after the drying step. It includes a winding step of winding the coating film, which is a film, and an ultraviolet irradiation step of irradiating the coating film wound on the polygonal roller with ultraviolet rays.
  • the apparatus for producing a multilayer film for recording and reproduction includes a coating apparatus for applying a liquid containing an ultraviolet curable resin and whose optical characteristics change by irradiation with light to one surface of a film through which light is transmitted.
  • a drying device for drying the liquid applied to the film by the coating device, and a polygonal shape of the cross section perpendicular to the rotation axis were applied by rotating and drying the liquid by the drying device.
  • the present invention includes a polygonal roller that winds a coating film, which is a film, and an ultraviolet irradiation device that irradiates the coating film wound around the polygonal roller with ultraviolet rays.
  • a multilayer film for recording / reproduction can be efficiently manufactured.
  • FIG. 1 is a diagram showing a configuration example of a recording / reproduction multilayer film manufacturing apparatus according to the first embodiment.
  • FIG. 2 is a diagram showing an example of a method for manufacturing an optical disc.
  • FIG. 3 is a diagram for explaining a cutting process.
  • FIG. 4 is a diagram for explaining a cutting process.
  • FIG. 5 is a diagram for explaining a pasting process.
  • FIG. 6 is a diagram for explaining a recording process.
  • FIG. 7 is a diagram showing a configuration example of a recording / reproduction multilayer film manufacturing apparatus according to the second embodiment.
  • FIG. 1 is a diagram showing a configuration example of a recording / reproduction multilayer film manufacturing apparatus (hereinafter, simply referred to as “manufacturing apparatus”) according to the first embodiment.
  • the direction from the left to the right of the drawing is expressed as the X axis
  • the direction from the bottom to the top of the paper surface is expressed as the Y axis
  • the direction from the back to the front of the paper surface is expressed as the Z axis.
  • the manufacturing apparatus 10 includes a film roller 20, a pretreatment apparatus 25, a coating apparatus 30, a drying apparatus 40, a laminating roller 50, a polygonal roller 60, an ultraviolet (UV) irradiation apparatus 70, and a separator arranging apparatus 80.
  • a film roller 20 includes a pretreatment apparatus 25, a coating apparatus 30, a drying apparatus 40, a laminating roller 50, a polygonal roller 60, an ultraviolet (UV) irradiation apparatus 70, and a separator arranging apparatus 80.
  • the film roller 20 is a device in which the original fabric of the film 101 is set.
  • the film 101 is a transparent thin film through which light is transmitted, and is, for example, a PET (polyethylene terephthalate) film.
  • the film 101 forms an intermediate layer 121 in the recording / reproduction multilayer film 120 (see FIG. 5) of an optical disc.
  • the thickness of the film 101 is, for example, 10 ⁇ m or less.
  • the film roller 20 constitutes a polygonal roller 60 and a Roll-to-Roll (R2R). That is, the film roller 20 also rotates according to the rotation of the polygonal roller 60, the film 101 is pulled out from the original fabric set on the film roller 20, and the pulled out film 101 is polygonal while maintaining a tense state. It is wound on a roller 60.
  • R2R Roll-to-Roll
  • the pretreatment device 25 is a device that performs a step of performing UV ozone treatment and / or plasma treatment (hereinafter referred to as “pretreatment step”) on both surfaces of the film 101.
  • the coating device 30 is a device that performs a step of applying the liquid adhesive 102 to one surface of the film 101 (hereinafter referred to as "coating step"). For example, the coating device 30 applies the liquid adhesive 102 to the upper surface (the surface in the positive direction of the Y-axis) of the film 101 drawn from the film roller 20 with a uniform film thickness by a die coating method. The coating device 30 coats the adhesive 102 with a film thickness of, for example, 10 ⁇ m or less.
  • the surface of the film 101 to which the adhesive 102 is applied may be referred to as an upper surface, an inner surface, or a coated surface, and the surface of the film 101 to which the adhesive 102 is not applied may be referred to as a lower surface, an outer surface, or a non-coated surface.
  • the adhesive 102 contains at least an ultraviolet (UV) curable resin and a material whose optical properties (for example, reflectance or refractive index) change upon irradiation with light.
  • the material whose optical properties change upon irradiation with light may be an organic dye (dye) that is easily dissolved in a solvent.
  • the organic dye may be one that causes two-photon absorption.
  • the adhesive 102 may contain a cross-linking agent, a photopolymerization initiator, and the like in addition to the above materials.
  • the adhesive 102 forms the recording layer 122 in the recording / reproduction multilayer film 120 (see FIG. 5) of the optical disc.
  • the drying device 40 is a device that performs a step of drying the adhesive 102 applied to the film 101 (hereinafter referred to as a "drying step"). For example, the drying device 40 heats and dries the adhesive 102 on the film 101 after the coating step.
  • the heating temperature is, for example, 150 degrees or less.
  • the film thickness of the adhesive 102 after the drying step is, for example, 1 ⁇ m or less.
  • the drying device 40 dries the adhesive 102 on the upper surface of the film 101 so that the film thickness of the adhesive 102 after the drying step is 1 ⁇ m or less.
  • the film 101 and the adhesive 102 after the drying step applied to the upper surface of the film 101 are collectively referred to as a coating film 103.
  • the polygonal roller 60 is a device that performs a process of winding the coating film 103 (hereinafter referred to as "winding process").
  • the polygonal roller 60 is a roller having a rotating shaft 61 parallel to the Z axis and having a polygonal cross section perpendicular to the rotating shaft 61. That is, the three-dimensional shape of the polygonal roller 60 is a shape in which a prism is laid on its side.
  • each side surface plane parallel to the Z axis
  • a plate 62 the boundary line of the adjacent side surfaces (side parallel to the Z axis) is referred to as an edge 63.
  • the side connecting the vertices of the opposite bottom surfaces of the prism is called the edge 63.
  • the cross-sectional shape of the polygonal roller 60 is a hexagon (that is, a hexagonal column)
  • the cross-sectional shape of the polygonal roller 60 is any polygonal shape. There may be.
  • the cross-sectional shape of the polygonal roller 60 is preferably a regular polygon.
  • the polygonal roller 60 rotates around the rotation shaft 61 and winds up the coating film 103 after the drying step.
  • the coating film 103 is laminated on each plate 62 of the polygonal roller 60.
  • 20 layers of the coating film 103 are laminated on each plate 62. That is, a set of the intermediate layer 121 and the recording layer 122 is laminated for 20 layers.
  • the film in which the coating film 103 is laminated is referred to as a laminated film 104.
  • the length of one side of the polygon of the polygon roller 60 is 2r or more of the diameter of the optical disk (see FIG. 4).
  • the length of the edge 63 of the polygonal roller 60 is 2r or more in diameter of the optical disc.
  • the laminated film 104 formed on each plate 62 of the polygonal roller 60 is cut out into a circle having the same diameter of 2r as the optical disk to obtain a circular laminated film 106 (see FIG. 4). ..
  • a gap 64 having a predetermined width from the apex of the polygon toward the rotation axis 61 may be formed in the polygon roller 60 along the edge 63.
  • the laminated film 104 is removed from the polygonal roller 60 and the polygonal roller 60 is removed by inserting the blade into the gap 64 and moving the blade along the edge 63.
  • the roll of the laminated film 104 wound around the plate 62 can be divided into laminated films 104 (see FIG. 4) for each plate 62.
  • the laminating roller 50 is a device that performs a step of applying pressure to the coating film 103 newly wound around the polygonal roller 60 (hereinafter referred to as "laminating step").
  • the laminating roller 50 is provided at a position where a new coating film 103 starts to be wound around the polygonal roller 60, and faces the rotation axis 61 of the polygonal roller 60 with respect to one side (plate 62) of the polygonal roller 60.
  • a pressing force is applied in the direction (upward (positive direction of the Y-axis) in FIG. 1).
  • the rotation axis of the laminate roller 50 can move in the direction of approaching or moving away from the rotation axis 61 of the polygon roller 60 (vertical direction (Y-axis direction) in FIG. 1) according to the rotation of the polygon roller 60. Is.
  • a gap and air bubbles are formed between the outer surface of the coating film 103 previously wound around the polygonal roller 60 and the inner surface of the coating film 103 newly wound (that is, wound on the outermost side) around the polygonal roller 60. Can be prevented from occurring. That is, the coating films 103 are laminated exactly with each other without any gaps.
  • the UV irradiation device 70 is a device that performs a step of irradiating the coating film 103 wound around the polygonal roller 60 with ultraviolet rays (UV) (hereinafter referred to as "UV irradiation step").
  • UV irradiation step irradiates the coating film 103 wound around the polygonal roller 60 after being pressurized by the laminate roller 50 with UV.
  • the UV curable resin contained in the adhesive 102 on the inner surface of the coating film 103 newly wound (that is, wound on the outermost side) on the polygonal roller 60 is cured, and is wound on the polygonal roller 60 first.
  • the separator arranging device 80 is a device that performs a step of arranging the separator 105 on the upper surface of the coating film 103 (hereinafter referred to as "separator arranging step") every time the polygonal roller 60 rotates a predetermined number of times.
  • the separator 105 is a sheet of a material that does not adhere to either the adhesive 102 or the film 101, and is, for example, a paper sheet.
  • the length of the separator 105 in the X-axis direction is, for example, equal to or greater than the circumference of the polygon of the polygon roller 60.
  • the separator arranging device 80 arranges the separator 105 on the upper surface of the coating film 103 after the drying step and before being wound by the polygonal roller 60 when the polygonal roller 60 is rotated a predetermined number of times. do.
  • the separator 105 arranged on the upper surface of the coating film 103 is wound around the polygonal roller 60 together with the coating film 103 by the rotation of the polygonal roller 60.
  • the UV irradiation step 205 is performed on the coating film 103 newly wound together with the separator 105 and the adhesive 102 on the upper surface of the coating film 103 is cured, the inner surface of the coating film 103 remains. , Do not adhere to the outer surface of the separator 105 wound together.
  • the separator arranging device 80 arranges the separator 105 without cutting the film 101 in the middle of R2R.
  • the rolls of the laminated film 104 can be separated for each predetermined number of layers. That is, a plurality of laminated films 104 having a desired number of laminated films can be obtained from each plate 62.
  • FIG. 2 is a diagram showing an example of a method for manufacturing an optical disc.
  • the pretreatment step 200, the coating step 201, the drying step 202, the winding step 203, the laminating step 204, the UV irradiation step 205, the separator placement step 206, and the cutting step 207 are carried out. Will be done. However, the manufacturing method is an example, and at least one of these steps may be omitted in manufacturing the recording / reproducing multilayer film 120.
  • a cutting step 208 and a pasting step 209 are further performed on the recording / reproducing multilayer film 120 manufactured by the above manufacturing method.
  • these steps will be described in detail.
  • Pretreatment process the film 101 is subjected to double-sided UV ozone treatment and / or plasma treatment. As a result, the surface of the film 101 can be modified to improve the coatability in the coating step 201 and the adhesion in the UV irradiation step 205.
  • the coating device 30 applies the liquid adhesive 102 to the upper surface of the film 101 pulled out from the film roller 20 and maintained in a tense state by a die coating method, for example, to have a uniform film thickness of 10 ⁇ m or less. Apply like this. As a result, the adhesive 102 is applied to the upper surface of the film 101 with a uniform film thickness.
  • the drying apparatus 40 heat-drys the adhesive 102 coated on the upper surface of the film 101 in the coating step 201 so as to have a uniform film thickness of, for example, 1 ⁇ m or less to obtain a coated film 103.
  • the temperature of heat drying is, for example, 150 degrees or less.
  • the polygonal roller 60 rotates to wind the coating film 103 after the drying step 202 while maintaining the tension state of the film 101 by R2R.
  • the coating film 103 is laminated for one layer on each plate 62 of the polygonal roller 60. That is, the coating film 103 having a number of layers corresponding to the rotation speed of the polygon roller 60 is laminated on each plate 62 of the polygon roller 60. Therefore, it is possible to easily generate the laminated film 104 having the number of laminated films according to the rotation speed of the polygonal roller 60.
  • both the film roller 20 and the polygonal roller 60 are configured to rotate counterclockwise, but what kind of rotation direction of the film roller 20 and the polygonal roller 60 can be realized if R2R can be realized, respectively. It may be in the direction of rotation.
  • the laminating roller 50 applies a pressing force to the outermost coating film 103 wound around the polygonal roller 60 by the winding step 203.
  • the laminating roller 50 applies a pressing force to the outermost coating film 103 wound around the polygonal roller 60 by the winding step 203.
  • the generation of bubbles is prevented. That is, the coating films 103 are laminated exactly with each other without any gaps.
  • UV irradiation step 205 the UV irradiation device 70 irradiates the coating film 103 after the laminating step 204 wound around the polygonal roller 60 with UV.
  • the UV curable resin contained in the adhesive 102 on the inner surface of the coating film 103 newly wound (that is, wound on the outermost side) on the polygonal roller 60 is cured, and is wound on the polygonal roller 60 first.
  • the UV irradiation step 205 may be performed at any position while the coating film 103 newly wound around the polygonal roller 60 goes around.
  • the separator arranging device 80 is after the drying step 202 and the polygonal roller.
  • the separator 105 is arranged on the upper surface of the coating film 103 before being wound around the 60.
  • the separator 105 arranged on the upper surface of the coating film 103 is wound around the polygonal roller 60 together with the coating film 103 by further rotation of the polygonal roller 60.
  • the separator arranging device 80 arranges the separator 105 without cutting the film 101 in the middle of R2R. A desired number of laminated films 104 can be obtained from each plate 62.
  • the separator arrangement step 206 is performed every 20 rotations of the polygonal roller 60.
  • the separator 105 is sandwiched between the rolls of the laminated film 104 wound around the polygonal roller 60 after the completion of R2R, every 20 layers. Therefore, in the cutting step 207 described later, when the roll of the laminated film 104 wound around the polygonal roller 60 is cut in the Z-axis direction along the edge 63, the laminated film 104 formed on each plate 62 is formed.
  • Separation 105 separates every 20 layers. That is, a plurality of 20-layer laminated films 104 can be obtained from one plate 62.
  • FIG. 3 is a diagram for explaining the cutting step 207.
  • the cutting step 207 is performed after the winding by the polygonal roller 60 is completed (when the determination 222 in FIG. 2 is YES).
  • the blade is passed through the gap 64 formed from the apex of the polygon toward the rotation axis 61 along the edge 63 as shown by the dotted line 66 in FIG. 3, and is wound around the polygon roller 60.
  • the roll of the laminated film 104 is cut along the edge 63 of the polygonal roller 60 in the Z-axis direction. As a result, the laminated film 104 can be removed from the polygonal roller 60, and a flat laminated film 104 can be obtained from each plate 62 of the polygonal roller 60.
  • the separator 105 when the separator 105 is sandwiched, the laminated film 104 in each plate 62 after the cutting step 207 is separated by the separator 105.
  • the separator 105 when the separator 105 is sandwiched every 20 layers, a plurality of 20-layer laminated films 104 can be obtained in each plate 62 of the polygonal roller 60.
  • FIG. 4 is a diagram for explaining the cutting step 208.
  • the laminated film 104 cut by the cutting step 207 and obtained from each plate 62 of the polygonal roller 60 is cut out into a circle having the same diameter of 2r as the optical disk.
  • the circular laminated film 104 obtained by this cutting step 208 is referred to as a circular laminated film 106.
  • a plurality of circular laminated films 106 may be cut out from one laminated film 104.
  • FIG. 5 is a diagram for explaining the pasting step 209.
  • the circular laminated film 106 (that is, the multilayer film 120 for recording / reproduction) is stuck to the substrate 110 with the guide track.
  • the guide track is an unevenness for guiding the light for recording / reproduction emitted to the optical disc.
  • a plastic material or glass can be used as the material of the substrate 110 with a guide track, and it is preferable to use a plastic material from the viewpoint of cost.
  • a polycarbonate resin, a polyolefin resin, an acrylic resin, or the like can be used as the plastic material.
  • a transparent protective layer 130 that transmits light may be formed on the circular laminated film 106.
  • the material of the protective layer 130 may be a resin such as a photocurable resin (particularly an ultraviolet curable resin) or a slow-acting thermosetting resin.
  • the cover layer 133 may have a small light absorption with respect to the laser beam used.
  • the cover layer 133 may be formed by using a resin such as polycarbonate, amorphous polyolefin, or polymethylmethacrylate (PMMA), or glass.
  • an optical disk in which a circular laminated film 106 (that is, a multilayer film 120 for recording / reproduction) is attached to a substrate 110 with a guide track is manufactured.
  • FIG. 6 is a diagram for explaining a recording process.
  • the recording step is carried out, for example, by a drive device for recording / playback.
  • the recording step as shown in FIG. 6, light (for example, blue light) is irradiated to a desired recording layer 122 and a desired position among the plurality of recording layers 122 of the optical disc.
  • the optical characteristics for example, reflectance or refractive index
  • the position where the optical characteristics have changed is called the recording mark 123.
  • the optical disc manufactured by the manufacturing method of the present disclosure has a large number of recording layers 122, a large amount of data can be recorded as compared with the conventional optical disc having a small number of recording layers.
  • the optical disc When reproducing the data recorded on the optical disc, light (for example, blue light) is irradiated to the desired recording layer 122 and the desired position among the plurality of recording layers 122 of the optical disc. Since the optical characteristics (for example, reflectance or refractive index) differ between the case where the recording mark 123 exists at the position and the case where the recording mark 123 does not exist, the recording mark at the position is detected by detecting the difference in the optical characteristics with respect to the irradiated light. It is possible to detect whether or not 123 is present. As a result, the data recorded on the recording layer 122 of the optical disc can be reproduced.
  • the optical characteristics for example, reflectance or refractive index
  • the recording / reproducing multilayer film 120 having a desired number of laminated layers can be efficiently manufactured.
  • the material selectivity in the recording layer 122 can be enhanced.
  • Embodiment 2 In the first embodiment, a method of producing a laminated film 104 having a desired number of laminated layers by arranging the separator 105 without cutting the film 101 in the middle of R2R has been described. In the second embodiment, a manufacturing apparatus and a manufacturing method for manufacturing a desired number of laminated films 104 by cutting the coating film 103 in the middle of R2R without arranging the separator 105 will be described. In the second embodiment, the components described in the first embodiment may be designated by the same reference numerals and the description thereof may be omitted.
  • FIG. 7 is a diagram showing a configuration example of the manufacturing apparatus according to the second embodiment.
  • the manufacturing apparatus 10 includes a film roller 20, a pretreatment apparatus 25, a coating apparatus 30, a drying apparatus 40, a guide roller 90, a laminating roller 50, a polygonal roller 60, and a UV irradiation apparatus 70.
  • the film roller 20, the pretreatment device 25, the coating device 30, the drying device 40, the laminating roller 50, the polygonal roller 60, and the UV irradiation device 70 have already been described in the first embodiment.
  • the guide roller 90 is a device that guides the transfer of the coating film 103 after the drying step 202 to the polygonal roller 60.
  • the guide roller 90 sandwiches the coating film 103 from above and below to maintain the tension state of the film 101.
  • the tension state of the film 101 is maintained between the guide roller 90 and the film roller 20.
  • the coating film 103 is cut at the cutting position 91 with respect to the laminated film 104 wound around the polygonal roller 60.
  • control device includes a processor and memory.
  • the processor cooperates with the memory to control the operation of each component of the manufacturing apparatus 10 described above.
  • the processor reads a computer program that controls the operation of each component of the manufacturing apparatus 10 described above from the memory and executes it.
  • the control device may be built in the manufacturing device 10.
  • the control device may be a device different from the manufacturing device 10 and control the manufacturing device 10 through a predetermined communication network.
  • the method for producing a recording / reproducing multilayer film (120) is a film (101) that transmits a liquid (102) that contains an ultraviolet curable resin and whose optical characteristics change upon irradiation with light.
  • the coating step (201) of applying to one surface, the drying step (202) of drying the liquid applied to the film (101) by the coating step (201), and the shape of the cross section perpendicular to the rotation axis (61) With the winding step (203) in which the polygonal roller (60) is rotated to wind up the coating film (103) which is the film (101) coated with the liquid (102) after the drying step (202).
  • the liquid (102) may contain an organic dye whose optical properties change upon irradiation with light.
  • the coating film (103) newly wound (that is, wound on the outermost side) on the polygonal roller (60) is irradiated with ultraviolet rays. Therefore, the ultraviolet curable resin contained in the liquid (102) coated on one surface of the coating film (103) is cured, and one surface of the newly wound coating film (103) is formed by a polygonal roller. Adheres to the other surface of the coating film (103) previously wound around (60). Therefore, when the polygonal roller (60) rotates, a plurality of coating films (103) are laminated on the polygonal roller (60) to form a recording / reproducing multilayer film (120). That is, according to this manufacturing method, the recording / reproduction multilayer film (120) can be efficiently manufactured.
  • the method for producing the recording / reproducing multilayer film (120) described above is a coating film (20) after the drying step (202) and before the winding step (203) each time the polygonal roller (60) is rotated a predetermined number of times.
  • a separator arranging step (206), in which a sheet-shaped separator (105) is arranged on the upper surface of 103), may be further included.
  • the separator (105) is also wound around the polygonal roller (60) together with the coating film (103).
  • the ultraviolet curable resin contained in the liquid (102) coated on one surface of the coating film (103) newly wound around the polygonal roller (60) is cured by being irradiated with ultraviolet rays, although it is cured. It does not adhere to the surface of the separator (105) wound together. Therefore, by setting the predetermined number of rotations of the polygonal roller (60) to the desired number of layers for the recording / reproduction multilayer film (120), the film (101) is not cut in the middle of R2R. , A recording / reproduction multilayer film (120) having a desired number of layers can be efficiently produced.
  • the polygon roller (60) described above may have a gap (64) formed from the apex of the polygon toward the rotation axis (61).
  • the method for producing the recording / reproducing multilayer film (120) described above is a method of laminating a laminated film (104) wound on a polygonal roller (60) and laminated with a coating film (103) after an ultraviolet irradiation step (205).
  • a cutting step (207), in which the roll is cut through a blade through the gap (64), may be further included.
  • the laminated film (104) formed on each plate (62) of the polygonal roller (60) can be easily removed from the polygonal roller (60) and flat from each plate (62).
  • the laminated film 104 can be obtained.
  • the apparatus (10) for producing the recording / reproducing multilayer film (120) is a film (10) through which light transmits a liquid (102) containing an ultraviolet curable resin and whose optical characteristics change upon irradiation with light.
  • the coating film (103) newly wound (that is, wound on the outermost side) on the polygonal roller (60) is irradiated with ultraviolet rays. Therefore, the ultraviolet curable resin contained in the liquid (102) coated on one surface of the coating film (103) is cured, and one surface of the newly wound coating film (103) is formed by a polygonal roller. Adheres to the other surface of the coating film (103) previously wound around (60). Therefore, when the polygonal roller (60) rotates, a plurality of coating films (103) are laminated on the polygonal roller (60) to form a recording / reproducing multilayer film (120). That is, according to this configuration, the recording / reproduction multilayer film (120) can be efficiently manufactured.
  • the above-mentioned recording / reproduction multilayer film (120) manufacturing apparatus (10) may further include a film roller (20) on which the original fabric of the film (101) is set.
  • the film roller (20) may constitute a polygonal roller (60) and a Roll-to-Roll (R2R).
  • the multilayer film (120) for recording / reproduction can be efficiently manufactured by R2R.
  • the technology of the present disclosure is useful for manufacturing a multilayer film for recording and reproduction.
  • Multilayer film manufacturing equipment for recording and playback 20 Film roller 25 Pretreatment equipment 30 Coating equipment 40 Drying equipment 50 Laminate roller 60 Polygonal roller 61 Rotating shaft 62 Plate 63 Edge 64 Gap 70 Ultraviolet (UV) irradiation equipment 80 Separator placement equipment 90 Guide Roller 101 Film 102 Adhesive 103 Coating Film 104 Laminated Film 105 Separator 106 Circular Laminated Film 110 Substrate with Guide Track 120 Multilayer Film for Recording and Reproduction 121 Intermediate Layer 122 Recording Layer 123 Recording Mark 130 Protective Layer 200 Pretreatment Step 201 Coating Step 202 Drying process 203 Winding process 204 Laminating process 205 Ultraviolet (UV) irradiation process 206 Separator placement process 207 Cutting process 208 Cutting process 209 Sticking process

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PCT/JP2020/042739 2020-01-27 2020-11-17 記録再生用多層膜の製造方法、及び、記録再生用多層膜の製造装置 WO2021152962A1 (ja)

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JP2001286931A (ja) * 2000-04-11 2001-10-16 Ishikawajima Harima Heavy Ind Co Ltd 多孔帯材矯正装置及びその矯正方法
JP2019529278A (ja) * 2016-09-29 2019-10-17 東レ株式会社 ニップローラーおよびフィルムロール体の製造方法

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JP2001307388A (ja) * 2000-04-25 2001-11-02 Sony Corp 光記録媒体の製造方法及び製造装置
JP2007042213A (ja) * 2005-08-03 2007-02-15 Canon Inc 光記録媒体の製造方法及びそれを用いて製造された光記録媒体
CN101490760B (zh) * 2006-10-18 2012-11-14 松下电器产业株式会社 多层信息记录介质的制造方法及多层信息记录介质
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JPH08324849A (ja) * 1995-05-30 1996-12-10 Matsushita Electric Ind Co Ltd 記録媒体製造方法及び装置
JPH0919904A (ja) * 1995-07-07 1997-01-21 Murakami Tekko Kk 板材へのシート貼着方法とその装置
JP2001286931A (ja) * 2000-04-11 2001-10-16 Ishikawajima Harima Heavy Ind Co Ltd 多孔帯材矯正装置及びその矯正方法
JP2019529278A (ja) * 2016-09-29 2019-10-17 東レ株式会社 ニップローラーおよびフィルムロール体の製造方法

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