WO2021095460A1 - 積層体を加工する方法、加工フィルムの製造方法、および、積層体加工装置 - Google Patents

積層体を加工する方法、加工フィルムの製造方法、および、積層体加工装置 Download PDF

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Publication number
WO2021095460A1
WO2021095460A1 PCT/JP2020/039525 JP2020039525W WO2021095460A1 WO 2021095460 A1 WO2021095460 A1 WO 2021095460A1 JP 2020039525 W JP2020039525 W JP 2020039525W WO 2021095460 A1 WO2021095460 A1 WO 2021095460A1
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WO
WIPO (PCT)
Prior art keywords
blade
tool
laminated body
dry ice
rotation
Prior art date
Application number
PCT/JP2020/039525
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
松本　大輔
幹士 藤井
Original Assignee
住友化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to KR1020227019821A priority Critical patent/KR20220090582A/ko
Priority to CN202080078557.0A priority patent/CN114728350A/zh
Publication of WO2021095460A1 publication Critical patent/WO2021095460A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • the present invention relates to a method for processing a laminate, a method for producing a processed film, and a laminate processing apparatus.
  • the present invention has been made in view of the above problems, and provides a method for processing a laminate, a method for producing a processed film, and a laminate processing apparatus capable of suppressing adhesion of dust to the blade of a rotating tool such as an end mill.
  • the purpose is to provide.
  • a rotating tool having a blade is moved relative to the laminate while being in contact with the laminate. It includes a step A of cutting or polishing the laminate, and a step B of colliding the dry ice particles with the tool during the step A.
  • the tool can include a columnar portion having a blade portion and a handle portion and extending in the axial direction of the rotation, and the blade provided on the outer peripheral surface of the blade portion.
  • the machining waste discharge direction of the tool is a direction from the tip of the blade to the handle or a direction from the handle to the tip of the blade.
  • the dry ice particles can be made to collide with the blade portion in a direction opposite to the processing waste discharge direction and in a direction oblique to the axis of the columnar portion.
  • the processing waste discharge direction of the tool is the direction from the tip of the blade portion toward the handle portion, and in the step of colliding the dry ice particles with respect to the blade portion, from the handle portion to the blade.
  • the collision can be made in the direction toward the tip of the portion and in the oblique direction with respect to the axis of the columnar portion.
  • the blade has a right-handed twist and can be rotated clockwise when viewed from the handle, or the blade has a left-handed twist and can be rotated counterclockwise when viewed from the handle.
  • the shaft can be arranged parallel to the thickness direction of the laminated body, and then the outer peripheral surface of the blade portion can be brought into contact with the end surface of the laminated body.
  • the columnar portion can be moved relative to the laminated body along the end face of the laminated body and in a direction orthogonal to the thickness direction of the laminated body.
  • the direction of the movement of the columnar portion can be the direction of the upcut with respect to the direction of the rotation of the tool.
  • the line B connecting the axis Q of the rotation of the tool and the point A where the blade of the tool separates from the end face when viewed from the axial direction of the rotation of the tool, and the injection direction of the dry ice particles.
  • the angle ⁇ formed by the EJ and the tool can be 0 to 180 ° as measured in the rotation direction of the tool starting from the line B.
  • the tool can be brought into contact with the convex portion, the concave portion, or the non-straight portion of the laminated body viewed from the thickness direction on the end face.
  • dry ice particles can be ejected from a nozzle having an elongated hole-shaped opening, and the opening can be arranged at a position facing the blade.
  • the columnar portion can be moved relative to the laminated body so that the columnar portion penetrates the laminated body.
  • At least one of the optical films can have one or more pressure-sensitive adhesive layers.
  • the thickness of the pressure-sensitive adhesive layer can be 50 ⁇ m or more.
  • the ratio of the total thickness of the pressure-sensitive adhesive layer to the thickness of the laminated body can be 30% or more.
  • the method for manufacturing a processed film according to the present invention includes a step of processing a laminate in which a plurality of optical films are laminated by a method of processing any of the above laminates with a tool.
  • the laminate processing apparatus is A fixing mechanism that sandwiches and fixes a laminate in which multiple optical films are laminated from both sides in the stacking direction, A tool with a blade and The rotating part that rotates the tool and While bringing the rotating tool into contact with the laminated body, the rotating tool is moved relative to the laminated body to form a moving portion.
  • a nozzle configured to inject dry ice particles onto the blade is provided.
  • the nozzle can be configured to eject the dry ice particles to the blade while moving relative to the laminate together with the tool.
  • the tool can have a columnar portion having a blade portion and a handle portion and extending in the axial direction of the rotation, and the blade provided on the outer peripheral surface of the blade portion.
  • the machining waste discharge direction of the tool is a direction from the tip of the blade to the handle or a direction from the handle to the tip of the blade.
  • the nozzle is configured to cause the dry ice particles to collide with the blade portion in a direction opposite to the processing waste discharge direction and in a direction oblique to the axis of the columnar portion. Can be done.
  • the moving portion is configured such that the rotating tool is arranged so that the axis of rotation is parallel to the thickness direction of the laminated body and the outer peripheral surface of the columnar portion is brought into contact with the end surface of the laminated body. Can be done.
  • the moving portion is configured to move the rotating tool relative to the laminated body along the end face of the laminated body and in a direction orthogonal to the axis of rotation. be able to.
  • the moving portion can be configured to move the rotating tool in the upcut direction with respect to the rotating direction of the tool.
  • the nozzle is formed by a line B connecting the rotation axis Q of the tool and a point A where the blade of the tool is separated from the end face when viewed from the axial direction of rotation of the tool, and the shaft of the nozzle.
  • the angle ⁇ can be configured to be 0 to 180 ° as measured in the rotation direction of the tool starting from the line B.
  • the opening of the nozzle has an elongated hole shape, and the opening can be configured to face the blade portion.
  • a dry ice particle supply unit can be connected to the nozzle.
  • a method for processing a laminate a method for producing a processed film, and a laminate processing apparatus capable of suppressing adhesion of dust to the blade of a rotating tool such as an end mill.
  • FIG. 1 is an end view of the laminated body according to the embodiment.
  • (A) to (e) of FIG. 2 are top views of the laminated body according to each embodiment.
  • FIG. 3 is a schematic view of the laminate processing apparatus according to the first embodiment.
  • (A) and (b) of FIG. 4 are cross-sectional views perpendicular to the axis in the vicinity of the end mill, showing the cases where the moving direction of the end mill is up-cut and down-cut with respect to the rotation direction of the end mill, respectively. is there.
  • FIGS. 5A to 5D the injection directions EJ of the dry ice particles when the blades of the end mill are right-handed, right-handed, left-handed, left-handed, and left-handed, respectively. It is a schematic diagram which shows.
  • FIG. 6 is a flow chart showing the configuration of the dry ice particle supply unit according to the embodiment.
  • 7 (a) and 7 (b) are schematic views showing one mode of processing by an end mill, respectively.
  • FIG. 8 is a schematic view showing one mode of processing by an end mill.
  • FIG. 9 is a schematic view showing a nozzle and an end mill 44 according to another embodiment.
  • FIG. 10 is a schematic view showing a nozzle and an end mill 44 according to another embodiment.
  • the laminated body 10 to be processed will be described with reference to FIG.
  • the Z direction is the thickness direction
  • the X direction and the Y direction are the directions perpendicular to the Z direction.
  • the laminated body 10 has a plurality of optical films 12.
  • Each optical film 12 may be a single-layer film or a laminated film.
  • An example of a single layer film is a resin film.
  • resins include cellulose-based resins (triacetyl cellulose, etc.), polyolefin-based resins (polypropylene-based resins, etc.), cyclic olefin-based resins (norbornen-based resins, etc.), acrylic-based resins (polymethylmethacrylate-based resins, etc.), polyester-based resins.
  • Resins polyethylene terephthalate resin, etc.
  • polyimide resins polyethylene, polyamideimide
  • These single-layer films can be optical films such as a protective film, a base film, a retardation film, and a window film.
  • the laminated film is a film having a plurality of layers.
  • Examples of laminated films are polarizing films, circularly polarizing plates, and touch sensors.
  • the polarizing film includes at least a base material and a polarizer.
  • the circularly polarizing plate has, for example, a polarizer and a retardation (1 / 4 ⁇ ) film.
  • the touch sensor can include a transparent substrate, a sensing pattern layer, and a sensing line.
  • the laminated film can further include layers such as an adhesive layer, an adhesive layer, a release film, and a protective film.
  • At least one laminated film typically has one or more pressure-sensitive adhesive layers.
  • the pressure-sensitive adhesive is a layer that has adhesiveness and can be directly bonded to other members at room temperature.
  • Examples of pressure-sensitive adhesives are acrylic-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, and urethane-based pressure-sensitive adhesives.
  • the pressure-sensitive adhesive layer in the laminate 10 has adhesiveness.
  • the pressure-sensitive adhesive layer in the present invention examples include those that can be crosslinked and cured by heat or light.
  • the pressure-sensitive adhesive layer is a pressure-sensitive adhesive layer that has adhesiveness before curing and can be bonded to other members at room temperature, and further, when cross-linked and cured by a method such as heat or light, the adhesive strength is improved. is there.
  • An example of such a pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive.
  • the adhesive in the laminate 10 is before curing and has adhesiveness.
  • the laminate 10 contains the pressure-sensitive adhesive layer, debris from the pressure-sensitive adhesive layer easily adheres to the blade, so that the effect of the present invention is high.
  • each optical film 12 is not particularly limited, but can be, for example, 20 ⁇ m to 500 mm, preferably 50 ⁇ m to 500 ⁇ m, and more preferably 50 ⁇ m to 200 ⁇ m.
  • each adhesive layer can be 50 ⁇ m or more, and can be 100 ⁇ m or more.
  • the thickness of each pressure-sensitive adhesive layer can be 250 ⁇ m or less.
  • the laminated body 10 includes a plurality of such optical films 12, but the number of optical films 12 in the laminated body 10 is not particularly limited as long as it is 2 or more, but is usually 5 or more, and 10 or more. It may be present, and may be 50 or more.
  • Each optical film 12 of the laminated body 10 is usually an optical film 12 having the same laminated structure as each other, but it is also possible to laminate optical films 12 having different laminated structures from each other.
  • the thickness of the laminated body 10 can be, for example, 10 mm to 60 mm, preferably 20 mm to 50 mm.
  • the ratio of the total thickness of the pressure-sensitive adhesive layer to the thickness of the laminate 10 can be 30% or more, or 40% or more. The thicker the total thickness of the pressure-sensitive adhesive layer, the easier it is to adhere to the blade, which is more effective.
  • the laminated body 10 is laminated in addition to the plurality of optical films 12 in order to prevent the optical film 12 from being damaged when the laminated body 10 is fixed between the pair of contact members 22 of the laminated body processing apparatus 100 (details will be described later).
  • Protective films 14 can be provided on one or both ends of the direction.
  • An example of the protective film 14 is a resin film.
  • the resin are polystyrene, polyethylene terephthalate and the like, in addition to the resin exemplified in the resin film described above.
  • the thickness of the protective film 14 can be, for example, 0.2 mm to 1.0 mm, preferably 0.3 mm to 0.8 mm, and more preferably 0.3 mm to 0.6 mm.
  • FIG. 2 is a view of various examples of the laminated body 10 as viewed from the thickness direction (Z direction).
  • the outer shape of the laminated body 10 is a rectangle, a rectangle with rounded corners, a shape having a concave PD, a shape having a convex PP, and a shape having a hole TH. It may be.
  • an example of the non-linear portion is a rounded portion R.
  • each optical film 12 in one laminate 10 is usually substantially the same. For example, by cutting out each optical film 12 from the original film with a Thomson blade or the like, a large number of optical films 12 having substantially the same outer shape can be obtained.
  • each optical film 12 is laminated so that the outer shapes are in the same direction as shown in FIG. 2, and as shown in FIG. 1, the laminated body 10 is formed by the outer end faces of the respective optical films 12.
  • the outer end face EF of is formed.
  • each optical film 12 has a hole TH as shown in FIG. 2 (e), as shown by a dotted line in FIG. 1, in addition to the outer end face EF, the inside of the hole TH is inside.
  • the end face EF is also formed.
  • each optical film 12 is not particularly limited, and for example, the length of one side of the film can be, for example, 100 mm or more.
  • FIG. 3 is a side view of the laminate processing apparatus 100 according to the present embodiment.
  • the laminate processing device 100 has a fixing mechanism 20 for fixing the laminate 10 and a processing portion 40.
  • the fixing mechanism 20 is configured to sandwich and fix the laminated body 10 from both sides in the laminating direction.
  • the fixing mechanism 20 mainly includes a pair of contact members 22, a fixing portion 61, and a pressing portion 60.
  • Each of the pair of contact members 22 is a plate-shaped member, and the thickness direction thereof is arranged in the Z direction (pressing direction and thickness direction of the laminated body), and the film laminated body 10 is vertically and vertically sandwiched from both sides in the thickness direction. They are arranged apart from each other in the direction.
  • the X and Y directions are the horizontal direction
  • the Z direction is the vertical direction.
  • the size of the contact member 22 viewed from the Z direction can be appropriately set within a range smaller than the outer shape of the surface (the surface perpendicular to the thickness direction) of the laminated film 10 to be fixed.
  • the protrusion amount T at which the outer end surface EF of the laminated body 10 protrudes from the end surface AP of the contact member 22 is 0. It is preferably 8 mm to 1.5 mm.
  • the protrusion amount T before processing can be 1 mm.
  • the protrusion amount T of the laminated body after processing can be 0.3 to 0.8 mm, and can be 0.5 mm.
  • each of the contact members 22 is a metal member.
  • metals are aluminum, steel, stainless steel, alloy tool steel (eg SKD11) and the like.
  • the lower contact member 22 is fixed to the fixing portion 61 via the connecting portion 24, and the upper contact member 22 is fixed to the pressing portion 60 via the connecting portion 24.
  • the pressing portion 60 is arranged above the fixing portion 61, and the pressing portion 60 is configured so that the contact member 22 above the fixed portion 61 can be moved in the vertical direction. Therefore, the pressing portion 60 can press the upper contact member 22 toward the lower contact member 22. That is, the laminated body 10 can be pressed and fixed between the pair of contact members 22 from both sides in the thickness direction.
  • the specific configuration of the pressing portion 60 is not particularly limited, and for example, a known moving mechanism such as a screw jack or a hydraulic jack can be used. It may be a single shaft type or a multi-shaft type.
  • the processing unit 40 includes an end mill (a tool having a blade) 44, a rotating unit 42 for rotating the end mill, a moving unit 46 for moving the rotating end mill 44 relative to the laminated body, and a nozzle for injecting dry ice particles.
  • an end mill a tool having a blade
  • a rotating unit 42 for rotating the end mill
  • a moving unit 46 for moving the rotating end mill 44 relative to the laminated body
  • a nozzle for injecting dry ice particles.
  • the form of the end mill 44 is not particularly limited, but usually, as shown in FIG. 3, the columnar portion 44z having the blade portion 44b and the handle (shank) portion 44a and extending in the axial direction of rotation and the outer surface of the blade portion 44b
  • the blade 44c provided is provided.
  • a router type end mill or the like can be preferably used as the end mill 44.
  • the length (Z-axis direction) of the blade portion 44b of the end mill 44 is preferably longer than the thickness of the laminated body 10.
  • the blade portion 44b of the end mill has a blade 44c on the outer peripheral surface, but the tip 44t can also have a blade.
  • the rotating unit 42 rotates the end mill 44 around its axis.
  • the rotating portion 42 rotates the end mill 44 around an axis parallel to the thickness direction (Z direction) of the laminated body 10.
  • the moving portion 46 moves the rotating end mill 44 in a direction perpendicular to the thickness direction of the laminated body 10 along the end surface EF in a state where the outer peripheral surface of the blade portion 44b of the end mill 44 is in contact with the end surface EF of the laminated body 10. Move.
  • Examples of the moving unit 46 are a 3-axis (XYZ) drive device and a robot arm.
  • the moving unit 46 may move the end mill 44 in the up-cut direction or in the down-cut direction with respect to the rotation of the end mill.
  • FIG. 4 (a) and 4 (b) are views showing a state in which the rotating end mill 44 is moved while being in contact with the laminated body 10, and the horizontal cross section of the laminated body 10 and the blade portion 44b of FIG. 3 is shown in the handle portion 44a. It is a view seen from the side (from top to bottom). The blade portion 44b rotates in the direction of the arrow D1, and the blade portion 44b moves in the direction of the arrow D2 relative to the laminated body 10 along the end face EF.
  • FIG. 4A is a horizontal cross-sectional view showing a situation in which the end mill 44 is moving in the upcut direction.
  • the direction in which the blade 44c advances when the blade 44c comes into contact with the laminated body 10 at the point P and the moving direction D2 of the end mill 44 are in the same direction, it is called that the end mill 44 moves in the upcut direction.
  • FIG. 4B is a horizontal cross-sectional view showing a situation in which the end mill 44 is moving in the downcut direction.
  • the end mill 44c moves away from the laminated body 10 at the point P and the direction in which the blade 44c advances and the moving direction D2 of the end mill 44 are opposite, it is called that the end mill 44 moves in the downcut direction.
  • the moving portion 46 preferably moves the end mill 44 in the upcut direction with respect to the rotation of the end mill 44 from the viewpoint of suppressing the adhesion of dust on the end face of the laminated body 10 after processing.
  • a dry ice particle supply unit 300 which will be described later, is connected to the nozzle 420, and dry ice particles can be ejected.
  • the nozzle 420 is fixed to the moving portion 46 by the connecting portion 424. Further, the axis of the nozzle 420, that is, the injection direction EJ of the dry ice particles is directed to the blade portion 44b of the end mill 44. Therefore, even when the end mill 44 is moving, the injection direction EJ of the nozzle 420 faces the blade portion 44b of the end mill 44, and it is possible to continuously remove the debris adhering to the blade portion 44b during cutting.
  • the opening of the nozzle 420 is circular. The diameter of the opening of the nozzle 420 can be 1 to 10 mm.
  • the axial direction of the nozzle 420 that is, the injection direction EJ of the dry ice particles from the nozzle 420 will be described in detail.
  • the injection direction EJ is arranged in the direction opposite to the discharge direction of the processing waste of the end mill 44 and at an angle to the axis of the columnar portion 44z of the end mill.
  • the end mill is twisted to the right of the right blade, that is, the blade 44c is spirally oriented clockwise from the handle 44a toward the tip of the blade 44b when viewed from the handle 44a side.
  • the flank 44d is provided on the tip side of the blade portion 44b with respect to the blade 44c
  • the end mill 44 is rotated clockwise when viewed from the handle portion 44a, and the processing waste discharge direction is the blade.
  • the direction is from the tip of the portion 44b toward the handle portion 44a.
  • the end mill 44 is twisted to the left of the right blade, that is, the blade 44c is spirally oriented counterclockwise from the handle 44a to the tip of the blade 44b when viewed from the handle 44a side.
  • the flank 44d is provided on the handle 44a side of the blade 44c
  • the end mill 44 is rotated clockwise when viewed from the handle 44a, and the processing waste discharge direction is the handle 44a. It is a direction toward the tip of the blade portion 44b.
  • the end mill is twisted to the right of the left blade, that is, the blade 44c is formed in a spiral shape so as to be clockwise from the handle 44a toward the tip of the blade 44b when viewed from the handle 44a side.
  • the flank 44d is provided on the handle 44a side of the blade 44c
  • the end mill 44 is rotated counterclockwise when viewed from the handle 44a, and the processing waste discharge direction is from the handle 44a to the blade. The direction is toward the tip of the portion 44b.
  • the end mill 44 is twisted to the left with the left blade, that is, the blade 44c is spirally oriented counterclockwise from the handle 44a to the tip of the blade 44b when viewed from the handle 44a side.
  • the flank 44d is provided on the tip side of the blade portion 44b with respect to the blade 44c
  • the end mill 44 is rotated counterclockwise when viewed from the handle portion 44a, and the processing waste discharge direction is determined.
  • the direction is from the tip of the blade portion 44b toward the handle portion 44a.
  • the injection direction EJ of the dry ice particles is arranged in the direction opposite to the discharge direction of the processing waste of the end mill 44 and diagonally with the axis of the columnar portion 44z of the end mill as follows. That is, as shown in FIGS. 5A and 5D, when the processing waste discharge direction is from the tip of the blade portion 44b toward the handle portion 44a, the injection direction EJ is from the handle portion 44a to the blade portion. The direction is toward the tip of 44b and is oblique to the axis of the columnar portion 44z. On the other hand, when the processing waste discharge direction is from the handle 44a to the tip of the blade 44b as shown in FIGS. 5B and 5C, the injection direction EJ is from the tip of the blade 44b. The direction is toward the handle portion 44a and is oblique to the axis of the columnar portion 44z.
  • the processing waste discharge direction is from the tip of the blade portion 44b toward the handle portion 44a as shown in (a) or (d) of FIG. is there.
  • the angle (acute angle) ⁇ formed by the axis of the columnar portion 44z and the injection direction EJ can be 5 to 85 °, and is preferably 10 to 65 °.
  • the injection direction EJ of the dry ice particles that is, the direction of the axis of the nozzle 420 may be directed to the blade portion 44b, and the injection direction EJ may pass through the rotation axis Q. preferable.
  • the injection direction EJ of the dry ice particles is such that the angle ⁇ formed by the line B connecting the rotation axis Q of the end mill 44 and the point A where the blade 44c of the end mill 44 separates from the end face EF and the injection direction EJ of the dry ice particles is a line. It is preferable that the temperature is 0 to 180 ° measured in the rotation direction of the end mill 44 starting from B. This is the same for both upcuts and downcuts.
  • the angle ⁇ is preferably 45 to 135 ° from the viewpoint of preventing work chips from adhering to the end faces of the laminated body, and in the case of the downcut of FIG. 4 (b). From the same viewpoint, the angle ⁇ is preferably 90 to 180 °.
  • the processing waste include film waste and adhesive waste.
  • the dry ice particle supply unit 300 includes a liquid carbon dioxide source 310, a transport gas source 330, a line L1 connecting the liquid carbon dioxide source 310 and the nozzle 420, and the transport gas source 330 and the nozzle 420.
  • the line L2 to be connected is provided.
  • the line L1 is provided with a valve 340 and an orifice 350, and the line L2 is provided with a valve 360.
  • the valve 340 is opened and the liquid of the liquid carbon dioxide source 310 is adiabatically expanded by the orifice 350 to generate dry ice particles (dry ice snow) and sent to the nozzle 420.
  • the valve 360 is opened, gas is supplied from the transport gas source 330 to the nozzle 420, and dry ice particles are blown out from the nozzle 420 with gas to be injected toward the blade portion 44b of the end mill 44 and collide with the blade portion 44b. Can be made to.
  • the average particle size of the dry ice particles to be collided is not particularly limited, but it is preferably 100 ⁇ m or more from the viewpoint of efficiently removing the adhesive debris among the processing debris. Further, it is preferably 1000 ⁇ m or less from the viewpoint of suppressing the pressure-sensitive adhesive layer from being chipped due to collision with dry ice.
  • the average particle size of the dry ice particles can be measured with a laser Doppler velocimeter.
  • the speed of the dry ice particles to collide can be 5 m / sec to 100 m / sec.
  • the transport gas for dry ice is not particularly limited, and may be, for example, nitrogen, air, or carbon dioxide.
  • the particle size of the dry ice particles can be adjusted by the distance from the adiabatic expansion by the orifice 350 to the ejection by the nozzle 420 (adiabatic expansion distance) and the distance between the nozzle 420 and the supply target of the dry ice particles (injection distance).
  • the distance (injection distance) between the nozzle 420 and the blade portion 44b is preferably less than 20 mm.
  • the adiabatic expansion distance can be, for example, 10 to 500 mm.
  • the end face EF of the laminated body is the processing target in the present embodiment.
  • the laminated body 10 is sandwiched between a pair of contact members 22, and one contact member 22 is pressed toward the other contact member 22 by the pressing portion 60 to form the laminated body. 10 is fixed.
  • the end surface EF of the laminated body 10 is brought into contact with the outer peripheral surface of the blade portion 44b of the end mill 44 that rotates about an axis parallel to the thickness direction of the laminated body 10.
  • the end mill 44 is moved along the end face EF in a direction orthogonal to the thickness direction, for example, in the long side or short side direction, and each end face EF is processed (step A).
  • Cutting is a specific example of machining.
  • 75% or more of all end face EFs of the laminated body 10 can be processed, and 90% or more, 95% or more, 99% or more, and 100% of all end face EFs may be processed. ..
  • dry ice particles are ejected from the nozzle 420 and collide with the blade portion 44b (step B).
  • the dry ice particles continue to be injected onto the blade portion 44b of the end mill 44 while the end mill 44 moves relatively along the end face EF of the laminated body 10 to grind.
  • the pressing by the pressing portion 60 is released, and the laminated body 10 is taken out from between the pair of contact members 22, so that the laminated body 10 with the end face processed with high accuracy can be obtained. If necessary, each optical film 12 is separated from the laminated body 10, so that the separated optical film 12 can be obtained.
  • the machining debris generated during the grinding process can be removed from the blade portion 44b of the end mill 44 each time. .. As a result, it is possible to prevent the processing accuracy from being lowered due to the dust adhering to the blade portion.
  • the adhesive debris easily adheres to the blade portion, but according to the present embodiment, the adhesive debris can be removed from the blade portion during cutting. Highly effective.
  • the shape of the film and the laminate 10 is not limited to the shape shown in FIG. 2, and any shape can be taken.
  • the outer shape may be an ellipse (including an oval) or a circle. It is preferable that the cutting step of the step A is performed by bringing the end mill into contact with the convex portion, the concave portion, or the non-linear portion of the end face of the laminated body 10 when the laminated body is viewed from the thickness direction.
  • the processing target in the step A is the outer end face EF of the laminated body 10, but it does not have to be the end face EF, or it may be the inner end face such as the inside of the hole.
  • step A the shaft of the end mill 44 is arranged parallel to the thickness direction of the laminated body 10, and the columnar portion 44z is recessed in the upper surface 10S of the laminated body 10 in the thickness direction.
  • the columnar portion 44z may be moved relative to the laminated body 10 so as to form a portion, and a hole may be formed in the laminated body 10.
  • the columnar portion 44z may be moved relative to the laminated body 10 so that the columnar portion 44z penetrates in the thickness direction of the laminated body 10.
  • a through hole can be provided in the laminated body 10, and a through hole can be formed in each optical film 12.
  • the end mill 44 may be rotated in a spiral shape (spiral shape) after penetration to widen the diameter of the hole TH.
  • the end mill 44 is helically formed from the upper surface 10S to the lower surface 10B of the laminated body 10. It can also be moved in a (spiral) shape. As a result, the columnar portion 44z widens the diameter of the recessed portion from the upper surface 10S in the thickness direction of the laminated body 10 and thus increases the depth, so that a large through hole can be formed.
  • the shape of the opening of the nozzle 420 is not limited to a circle.
  • the shape of the opening 42a of the nozzle 420 may be an elongated hole shape.
  • the axial direction of the elongated hole is parallel to the axis of the columnar portion 44z, that is, the opening 42a faces the blade portion 44b.
  • the axial length of the elongated hole can be appropriately set according to the length of the blade portion 44b.
  • the nozzle 420 is fixed to the moving portion 46 in order to blow the dry ice particles onto the tool that moves during cutting, but it may be fixed to the rotating portion 42.
  • the moving portion 46'for the nozzle 420 which is different from the moving portion 46 of the end mill 44, is provided.
  • the injection direction EJ of the nozzle 420 is set to the direction orthogonal to the columnar portion 44z of the end mill, and the nozzle 420 is the axial direction of the columnar portion of the end mill 44.
  • a reciprocating scanning motion may be performed along the line.
  • the modes of the processed portion 40 and the pressing portion 60 are not limited to the above modes.
  • a tool other than the end mill for example, a plane blade can also be used.
  • a surface grinding tool provided with a cutting blade on one surface of the rotating disk may be used.
  • a tool having abrasive grains may be used as the blade, and in this case, the polishing process can be performed instead of the cutting process. Even in such a case, by colliding the dry ice particles with the blade of the tool during cutting or polishing, it is possible to suppress a decrease in cutting accuracy and a decrease in polishing efficiency due to the adhesion of work chips.
  • the fixing portion 61 is on the bottom and the pressing portion 60 is on the top, but they may be arranged in opposite directions, and the pair of pressing portions 60 are arranged one above the other without having the fixing portion. You may.
  • the end mill 44 is moved by the moving portion 46 with respect to the laminated body 10, but the end mill and the laminated body 10 may move relative to each other.
  • the end mill 44 is fixed and the laminated body 10 is moved. It can also be carried out by moving the moving part with respect to the end mill.
  • the laminate processing device 100 may have one processing unit 40, but may have two or more processing units 40 from the viewpoint of quick processing.
  • the nozzle 420 can be provided in each processed portion.
  • the raw film was punched into a rectangular shape having a size of 155.6 ⁇ 75.6 mm with a Thomson blade to obtain an optical film 12.
  • 50 optical films 12 were laminated to obtain a laminated body 10.
  • the ratio of the total thickness of the adhesive layer to the thickness of the laminated body 10 was 47%.
  • Example 1 The laminate processing apparatus 100 shown in FIG. 1 was prepared. As shown in FIG. 5A, the end mill 44 has a right-handed twist, the processing waste discharge direction is the direction from the tip of the blade portion to the handle portion, and the end mill is rotated clockwise.
  • the blade portion 44b of the end mill 44 is arranged with the axis of the columnar portion 44z parallel to the thickness direction of the laminated body 10, and then the columnar portion 44z is brought into contact with the end surface of the laminated body 10 while the outer peripheral surface of the columnar portion 44z is in contact with the end surface of the laminated body 10.
  • the end face is cut (cutting depth 0.4 mm) by moving relative to the laminated body 10 along the end face EF of the laminated body 10 and in the direction orthogonal to the thickness direction of the laminated body 10. It was.
  • the cut length was the length of the long side, that is, 155.6 mm.
  • the moving direction of the end mill is set to the upcut direction with respect to the rotation direction of the end mill.
  • the injection direction EJ of the dry ice particles is in the direction opposite to the processing waste discharge direction with respect to the blade portion 44b and in the diagonal direction with respect to the axis of the columnar portion 44z. I made it collide.
  • the angle ⁇ was set to 60 °. Further, ⁇ in FIG. 4 was set to about 70 °.
  • Example 2 As shown in FIG. 4B, the moving direction of the end mill was the same as that of the first embodiment except that the direction of the downcut was set with respect to the rotation direction of the end mill.
  • Example 3 The same procedure as in Example 1 was carried out except that air containing no dry ice particles was ejected from the nozzle 420.
  • Example 2 The same as in Example 1 was made so that no gas or particles were ejected from the nozzle 420.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Milling Processes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Jigs For Machine Tools (AREA)
  • Electroluminescent Light Sources (AREA)
PCT/JP2020/039525 2019-11-14 2020-10-21 積層体を加工する方法、加工フィルムの製造方法、および、積層体加工装置 WO2021095460A1 (ja)

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CN202080078557.0A CN114728350A (zh) 2019-11-14 2020-10-21 加工层叠体的方法、加工膜的制造方法以及层叠体加工装置

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