WO2009081543A1 - Feuille en couches et procédé de fabrication de celle-ci - Google Patents

Feuille en couches et procédé de fabrication de celle-ci Download PDF

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Publication number
WO2009081543A1
WO2009081543A1 PCT/JP2008/003805 JP2008003805W WO2009081543A1 WO 2009081543 A1 WO2009081543 A1 WO 2009081543A1 JP 2008003805 W JP2008003805 W JP 2008003805W WO 2009081543 A1 WO2009081543 A1 WO 2009081543A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
release sheet
adhesive layer
base material
product
Prior art date
Application number
PCT/JP2008/003805
Other languages
English (en)
Japanese (ja)
Inventor
Masahiko Kawano
Original Assignee
Mitsubishi Plastics, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Plastics, Inc. filed Critical Mitsubishi Plastics, Inc.
Publication of WO2009081543A1 publication Critical patent/WO2009081543A1/fr

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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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • 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
    • G11B7/254—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 protective topcoat layers
    • G11B7/2542—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 protective topcoat layers consisting essentially of organic resins
    • 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
    • G11B7/256—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 layers improving adhesion between layers

Definitions

  • the present invention relates to a laminated sheet obtained by laminating a product part composed of an adhesive layer and a substrate on a long release sheet, and a method for producing the same.
  • an optical disk may be provided with a cover sheet to protect the light receiving surface.
  • a cover sheet is provided, for example, in a state of a laminated sheet prepared in plural on the release sheet at appropriate intervals. Since this laminated sheet is wound up in a roll shape, the cover sheet may be marked by winding pressure, or the adhesive of the adhesive layer may protrude and the cover sheet may become soiled. Further, there is a problem that foreign matter or the like is caught during winding and a cover mark or a scratch is generated on the cover sheet. In recent years, in the Blu-ray disc that has been developed, if there is such a mark or scratch, there is a possibility that data reading / writing may be hindered.
  • JP 2004-35836 A JP 2004-95013 A JP 2005-216440 A JP 2006-224581 A JP 2007-12230 A
  • the required release sheet Since the laminated sheet described in Document 5 is folded back, the required release sheet has a large area, which is also not preferable from an economic viewpoint. Moreover, the release sheet used for these is wound up and discarded after the cover sheet is peeled off. At this time, from the viewpoint of resource recycling, it is not preferable to leave an edge that is a separate material from the release sheet or to add a protective material because it makes recycling difficult.
  • an object of the present invention is to provide a laminated sheet and a method for manufacturing the same, in which the length of punching and half-cutting is shortened as much as possible, and generation of marks and scratches due to winding pressure is prevented.
  • the present invention employs the following configurations (1) to (7).
  • the laminated sheet according to (1), wherein the protective part has an uneven structure in which the unevenness is continuous.
  • the protective part is the laminated sheet according to (1) or (2) provided by an ultrasonic welding apparatus.
  • a base material is laminated on a long release sheet via an adhesive layer, and a product part is formed by half-cutting the base material and the adhesive layer, and the part other than the product part of the base material and the adhesive layer.
  • a method for producing a laminated sheet in which an unnecessary part is peeled and removed, and then a protective part having a height higher than the thickness of the product part is formed on the front surface side or the back surface side by forming on both ends in the width direction of the release sheet.
  • the product part is formed in plural in the length direction of the release sheet at appropriate intervals, and unnecessary parts other than the product part of the base material and the adhesive layer are peeled and removed, and then molded on both ends of the release sheet in the width direction.
  • a method for producing a laminated sheet which is processed to form a protective part having a height higher than the thickness of the product part on the front side or the back side.
  • the “height of the protective part” refers to the height from the surface of the release sheet when the protective part is formed on the surface side of the release sheet, and the protective part is formed on the back side of the release sheet. In the case, it means the height from the back surface of the release sheet.
  • the laminated sheet of the present invention is formed with a protective part having a height exceeding the thickness of the product part by shaping on both end sides in the width direction of the release sheet, and when the protective part is wound, the protective part receives a winding pressure. It is possible to prevent the product part from being scratched or scratched, and it is possible to prevent the product part from being scratched or scratched without using other members or increasing the area of the release sheet as in the past. This is preferable from the economical viewpoint.
  • the method for producing a laminated sheet of the present invention half-cuts or punches out only the part that becomes the product part, there is little risk of debris being generated, and there is less risk of being damaged or soiled by the debris. .
  • FIG. 1 is a schematic perspective view schematically showing a laminated sheet according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the laminated sheet of FIG.
  • the laminated sheet 1 has a disk-shaped product portion 5 composed of an adhesive layer 3 and a substrate 4 on a long release sheet 2.
  • a plurality of protective portions 6 are formed in the length direction at appropriate intervals, and the protective portions 6 that are raised on the surface side are formed on both end portions in the width direction of the release sheet 2.
  • the product portion 5 is a disc-shaped cover sheet used for an optical disc such as a Blu-ray disc.
  • the present invention is not limited to this, and various shapes can be used.
  • thermoplastic resin film As the release sheet 2, a thermoplastic resin film can be used.
  • a resin film such as a polyethylene terephthalate film, a polyester film, or a polypropylene film can be used.
  • a release agent such as a silicon-based material is applied to the surface of these resin films to perform a release treatment.
  • coated the silicone type release agent on the surface of the polyethylene terephthalate film is preferable.
  • the thickness of the release sheet 2 is preferably 38 ⁇ m to 200 ⁇ m, particularly 50 ⁇ m to 100 ⁇ m.
  • the pressure-sensitive adhesive layer 3 can be formed from a pressure-sensitive adhesive or an adhesive.
  • a pressure-sensitive adhesive or adhesive for example, acrylic, rubber-based, silicon-based, urethane-based, polyester-based, or the like can be used. Among these, it is preferable to use an acrylic pressure-sensitive adhesive.
  • the thickness of the pressure-sensitive adhesive layer 3 is 5 ⁇ m to 50 ⁇ m, particularly preferably 10 ⁇ m to 30 ⁇ m, although it depends on the laminate on which the product part 5 is laminated.
  • Substrate 4 As the base material 4, for example, a polyethylene terephthalate, polycarbonate, polystyrene, polyethylene, polypropylene, vinyl chloride, polyimide, a resin film made of a UV curable resin mainly composed of urethane acrylate and epoxy acrylate, or a laminate thereof is used. It can. Among these, a UV curable resin mainly composed of urethane acrylate and epoxy acrylate is preferable.
  • the thickness of the substrate 4 is preferably 25 ⁇ m to 250 ⁇ m, more preferably 50 ⁇ m to 100 ⁇ m, although it depends on the application.
  • the protection part 6 is formed as a concavo-convex structure in which the concavo-convex is continuous in the length direction of the release sheet 2 on both ends in the width direction of the release sheet 2.
  • the height of the protective part 6 is formed so as to exceed the thickness of the product part 5, and is preferably formed 20 ⁇ m to 50 ⁇ m higher than the thickness of the product part 5.
  • the width of the protective part 6 is preferably 10 mm to 4 mm, particularly 8 mm to 6 mm.
  • the protection part 6 can be formed by shaping with a press device or an ultrasonic welding device. Especially, it is preferable to use an ultrasonic welding apparatus, and thereby, it is possible to easily form the release sheet 2 with an appropriate height.
  • the ultrasonic welding apparatus melts the release sheet 2 by ultrasonic vibration of a vibration part called a tool horn, and processes it into an arbitrary shape depending on the shape of the tool horn itself and the shape of the pressurizing part facing the tool horn.
  • a vibration part called a tool horn
  • the type using a roller-shaped processed part for the pressurizing part (generally called an ultrasonic sewing machine) is more suitable because it can be molded while continuously feeding the release sheet 2. is there.
  • Specific examples of the ultrasonic sewing machine include PUS-2150 manufactured by Proco.
  • the protective part 6 is raised on the front side of the release sheet 2, but as shown in FIG. 3, it can be a protective part 6a raised on the back side. .
  • the height of the protective part 6 a is 20 ⁇ m to 50 ⁇ m higher than the thickness of the product part 5.
  • the protective portion 6 is formed by raising substantially rectangular convex portions at appropriate intervals.
  • the present invention is not limited to this, and a substantially circular convex portion is formed. It can be formed by raising at an appropriate interval, or can be raised so that the convex portions are connected.
  • the protection part 6 is formed in a line at the one side edge part of the peeling sheet 2, as shown in FIG. 4, it arrange
  • An adhesive or adhesive is applied to one side of the long release sheet 2 to form the adhesive layer 3.
  • This application is preferably performed by a lip coater.
  • a substrate 4 is laminated on the formed adhesive layer 3. At this time, it is preferable to laminate while pressing. From the base material 4 side of this laminate, as shown in FIG. 5 (a), the vicinity of the middle in the width direction of the release sheet 2 is punched into a circular shape at a predetermined interval, and the base material 4 and the adhesive layer 3 are half-cut. A punched portion and a concentric cut are formed to form a disc-shaped product portion 5.
  • the laminated sheet 1 can be manufactured by forming and forming the protection part 6 on the both ends in the width direction of the release sheet 2.
  • the protective part 6 can be formed by forming with a press device or an ultrasonic welding device, and among these, it is preferable to use an ultrasonic welding device.
  • the ultrasonic welding apparatus for example, it is preferable to perform a shaping process at a speed of 2 to 20 m / min, preferably 5 to 15 m / min by transmitting an ultrasonic wave of 20 kHz.
  • this laminated sheet 1 is formed with the protective part 6 having a height exceeding the thickness of the product part 5 on the release sheet 2, the product part 5 is not compressed even if it is rolled up. Therefore, the product part 5 is not scratched or scratched, and the adhesive does not protrude. Further, in the above manufacturing method, since only the part of the product part 5 is half-cut or punched out, it is difficult for debris to be produced, and the product part 5 is less likely to be stained.
  • Example 1 On the release-treated surface of a release sheet (thickness: 75 ⁇ m) coated with a silicon release agent on one side of a polyethylene terephthalate film, an acrylic adhesive was applied with a lip coater to form an adhesive layer having a DRY thickness of 20 ⁇ m.
  • a base material having a thickness of 80 ⁇ m made of a UV curable resin mainly composed of urethane acrylate and epoxy acrylate was pressure-bonded to the adhesive layer to prepare a laminate having a width of 150 mm and a length of 150 m.
  • a tool horn rotary ultrasonic welding device also known as an ultrasonic sewing machine, manufactured by Proco, Inc .: PUS-2150
  • the speed is increased by a roller while continuously feeding to both ends of the release sheet in the width direction.
  • Continuous unevenness molding was performed under the conditions of 9 m / min, pressure of 0.15 MPa, and output of 500 W, and a protective sheet was formed to form a laminated sheet.
  • the laminated sheet was wound around a plastic core having a diameter of 6 inches to obtain a roll wound body.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur une feuille en couches qui empêche qu'une impression, qu'une rayure et autres ne soient provoquées par une pression d'enroulement, tout en réduisant à un minimum la perforation et la longueur de demi-coupe. Une feuille en couches (1) de l'invention présente une structure dans laquelle une pluralité de parties de produit (5), ayant chacune une forme prédéterminée et comprenant une couche adhésive (3) et un matériau de base (4), sont agencées à des intervalles appropriés sur une longue feuille antiadhésive (2) dans la direction de la longueur de la feuille antiadhésive (2). Des parties de protection (6), dont la hauteur est supérieure à une épaisseur des parties de produit (5), sont formées sur un côté avant ou sur un côté arrière de la feuille antiadhésive (2) par le façonnage des deux extrémités dans la direction de la largeur de la feuille antiadhésive (2).
PCT/JP2008/003805 2007-12-25 2008-12-17 Feuille en couches et procédé de fabrication de celle-ci WO2009081543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007331378 2007-12-25
JP2007-331378 2007-12-25

Publications (1)

Publication Number Publication Date
WO2009081543A1 true WO2009081543A1 (fr) 2009-07-02

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PCT/JP2008/003805 WO2009081543A1 (fr) 2007-12-25 2008-12-17 Feuille en couches et procédé de fabrication de celle-ci

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WO (1) WO2009081543A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004035836A (ja) * 2002-07-05 2004-02-05 Lintec Corp 積層シートおよびその製造方法
JP2004095013A (ja) * 2002-08-30 2004-03-25 Sun A Kaken Co Ltd 光ディスク用積層シート
JP2005216440A (ja) * 2004-01-30 2005-08-11 Fuji Photo Film Co Ltd 積層シート材及び積層シート材の打抜き方法
JP2005335105A (ja) * 2004-05-25 2005-12-08 Olympus Corp 超音波溶着機のホーン及び超音波溶着機並びにこれを用いた熱可塑性樹脂板の接合方法
JP2006001253A (ja) * 2004-06-21 2006-01-05 Lintec Corp 積層シートおよびその製造方法
JP2006173395A (ja) * 2004-12-16 2006-06-29 Mitsui Mining & Smelting Co Ltd スペーサーテープ
JP2006224581A (ja) * 2005-02-21 2006-08-31 Lintec Corp 積層シート、積層シートの巻取体およびそれらの製造方法
JP2006273418A (ja) * 2005-03-30 2006-10-12 Fujitsu Ltd キャリアテープ、半導体装置担持体、及びキャリアテープの製造方法
JP2007012230A (ja) * 2005-07-04 2007-01-18 Bridgestone Corp 光情報記録媒体の製造に適した光硬化性転写円盤シート、及びその製造方法
WO2008093851A1 (fr) * 2007-02-01 2008-08-07 Kaneka Corporation Dispositif médical pour une cavité corporelle et son procédé de production

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004035836A (ja) * 2002-07-05 2004-02-05 Lintec Corp 積層シートおよびその製造方法
JP2004095013A (ja) * 2002-08-30 2004-03-25 Sun A Kaken Co Ltd 光ディスク用積層シート
JP2005216440A (ja) * 2004-01-30 2005-08-11 Fuji Photo Film Co Ltd 積層シート材及び積層シート材の打抜き方法
JP2005335105A (ja) * 2004-05-25 2005-12-08 Olympus Corp 超音波溶着機のホーン及び超音波溶着機並びにこれを用いた熱可塑性樹脂板の接合方法
JP2006001253A (ja) * 2004-06-21 2006-01-05 Lintec Corp 積層シートおよびその製造方法
JP2006173395A (ja) * 2004-12-16 2006-06-29 Mitsui Mining & Smelting Co Ltd スペーサーテープ
JP2006224581A (ja) * 2005-02-21 2006-08-31 Lintec Corp 積層シート、積層シートの巻取体およびそれらの製造方法
JP2006273418A (ja) * 2005-03-30 2006-10-12 Fujitsu Ltd キャリアテープ、半導体装置担持体、及びキャリアテープの製造方法
JP2007012230A (ja) * 2005-07-04 2007-01-18 Bridgestone Corp 光情報記録媒体の製造に適した光硬化性転写円盤シート、及びその製造方法
WO2008093851A1 (fr) * 2007-02-01 2008-08-07 Kaneka Corporation Dispositif médical pour une cavité corporelle et son procédé de production

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