WO2021084703A1 - 剥離ライナーおよび粘着シート - Google Patents

剥離ライナーおよび粘着シート Download PDF

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Publication number
WO2021084703A1
WO2021084703A1 PCT/JP2019/042875 JP2019042875W WO2021084703A1 WO 2021084703 A1 WO2021084703 A1 WO 2021084703A1 JP 2019042875 W JP2019042875 W JP 2019042875W WO 2021084703 A1 WO2021084703 A1 WO 2021084703A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
sensitive adhesive
release liner
adhesive sheet
adhesive layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/042875
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
拓磨 大久保
山田　晃史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec Corp
Original Assignee
Lintec Corp
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 Lintec Corp filed Critical Lintec Corp
Priority to PCT/JP2019/042875 priority Critical patent/WO2021084703A1/ja
Priority to JP2021553726A priority patent/JP7702357B2/ja
Priority to PCT/JP2020/040855 priority patent/WO2021085610A1/ja
Priority to US17/766,603 priority patent/US20240150624A1/en
Publication of WO2021084703A1 publication Critical patent/WO2021084703A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/306—Applications of adhesives in processes or use of adhesives in the form of films or foils for protecting painted surfaces, e.g. of cars
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C

Definitions

  • the present invention relates to a release liner and an adhesive sheet.
  • a fine embossed pattern has been formed on the surface of the pressure-sensitive adhesive layer.
  • a plurality of minute parts are formed on the surface of the pressure-sensitive adhesive layer. It is disclosed to form protrusions.
  • Patent Document 1 In the pressure-sensitive adhesive sheet of Patent Document 1, a plurality of microprojections formed on the surface of the pressure-sensitive adhesive layer disappear over time after the pressure-sensitive adhesive sheet is attached to the adherend, and the pressure-sensitive adhesive layer and the adherend are formed. By increasing the contact area with, a strong adhesive force to the adherend is developed. In the examples of Patent Document 1, it is disclosed that the microprojections of the pressure-sensitive adhesive layer disappeared one day after the application.
  • Patent Document 1 if it takes a long period of about one day for the strong adhesive force to appear, the adhesive sheet may be displaced during that period. Therefore, in the actual sticking work, it is preferable that the strong adhesive force is developed as soon as possible after the pressure-sensitive adhesive sheet is aligned at a predetermined position.
  • an object of the present invention is to provide a release liner and a pressure-sensitive adhesive sheet capable of suitably exhibiting adhesive strength in the pressure-sensitive adhesive layer.
  • the release liner of the present invention for achieving the above object has a surface in which convex portions and concave portions are alternately formed, and the convex portions are curved with a continuous change in inclination toward the tip end. It is narrowed and inclined so as to spread from the tip to the hem, and the concave portion is inclined and narrowed from the hem of the convex portion to the deepest portion formed in the concave portion.
  • the pressure-sensitive adhesive sheet of the present invention for achieving the above object has the release liner, the pressure-sensitive adhesive layer arranged on the surface of the release liner, and the base material layer in this order in the stacking direction.
  • the pressure-sensitive adhesive layer is easily flattened, the pressure-sensitive adhesive layer can be suitably developed with adhesive strength.
  • FIG. 3 is a perspective view of the pressure-sensitive adhesive sheet in which the surface shape of the release liner shown in FIG. 13 is inverted and transferred to the pressure-sensitive adhesive layer.
  • the release liner 100 of the embodiment has a surface 101 in which convex portions 110 and concave portions 120 are alternately formed.
  • the convex portion 110 and the concave portion 120 are formed alternately in each of the two directions D1 and D2 intersecting each other along the surface 101.
  • a release agent such as silicone may be applied to the surface 101.
  • the release liner 100 is formed of, for example, paper or a resin film, but the material used is not particularly limited. Further, in the illustrated example, the release liner 100 has a single-layer structure, but may have a laminated structure in which a plurality of layers are laminated. As an example of the laminated structure, a thermoplastic resin such as polyethylene (PE) is used on the surface of a paper base material formed of high-quality paper, glassin paper, kraft paper, etc., or a resin layer formed of polyethylene terephthalate (PET) or the like. Examples thereof include, but are not limited to, a laminated structure in which the formed coating layers are laminated.
  • PE polyethylene
  • PET polyethylene terephthalate
  • the convex portion 110 is curved and narrowed while the inclination is continuously changing toward the tip 111, and is inclined so as to spread from the tip 111 to the hem.
  • the concave portion 120 is inclined and narrowed from the hem of the convex portion 110 to the deepest portion 121 formed in the concave portion 120.
  • the deepest portion 121 has a curved shape while continuously changing its inclination.
  • the distance between the convex portions 110 is, for example, on the order of microns of several tens of ⁇ m to several hundreds of ⁇ m.
  • the height of the convex portion 110 and the depth of the concave portion 120 are, for example, about 10 ⁇ m to several tens of ⁇ m, but are not limited thereto.
  • the convex portion 110 and the concave portion 120 are formed by, for example, embossing, but how they are formed is not particularly limited.
  • the convex portion 110 and the concave portion 120 are formed by pressing a roller having an inverted shape of the convex portion 110 and the concave portion 120 on the outer peripheral surface against a sheet-shaped liner material having a flat surface.
  • the release liner 100 is laminated with the pressure-sensitive adhesive layer 20 and the base material layer 30 in this order, and constitutes the pressure-sensitive adhesive sheet 10 together with them.
  • the adhesive sheet 10 is used for advertisements and decorations attached to adherends such as automobiles, motorcycles, trains, trucks, outdoor signs, outdoor advertisements, show windows, walls, etc., but is used for purposes other than advertisements and decorations. It may be present, and the type of adherend to which it is attached is not particularly limited. Further, the shape of the adhesive sheet 10 is not particularly limited, and may be, for example, a rectangular shape such as a sheet of paper, a long shape, or a shape according to the shape of the adherend. It may have a rectangular shape.
  • the pressure-sensitive adhesive sheet 10 is formed by, for example, applying a pressure-sensitive adhesive to the release liner 100 to form the pressure-sensitive adhesive layer 20, and then bonding the base material layer 30 to the pressure-sensitive adhesive layer 20 while pressing the base material layer 30 with, for example, a roller.
  • the production method is not limited to this.
  • the pressure-sensitive adhesive layer 20 is formed of, for example, an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a styrene-based block copolymer pressure-sensitive adhesive, or the like, but is not particularly limited. They may be used alone or in combination of two or more.
  • the base material layer 30 can be variously designed according to the use of the adhesive sheet 10.
  • the adhesive sheet 10 is a decorative sheet to be attached to an adherend such as an automobile
  • the base material layer 30 is, for example, a support layer made of resin, a decorative layer containing decorations such as colors and patterns, and transparent.
  • the protective layers have a laminated structure in which they are laminated in this order, but the present invention is not limited to this, and for example, a form composed of only a single resin layer is also included in the scope of the present invention. Further, the form in which the constituent material of the base material layer 30 is a paper base material is also included in the scope of the present invention.
  • the adhesive sheet 10 is used by peeling off the release liner 100, and is attached to the adherend via the adhesive layer 20.
  • the pressure-sensitive adhesive layer 20 has a shape in which the shape of the surface 101 is inverted and transferred due to the arrangement of the release liner 100 on the surface 101, and the concave portion 120 of the release liner 100 is inverted and transferred. 21 and the concave portion 22 in which the convex portion 110 of the release liner 100 is inverted and transferred are alternately provided.
  • the convex portion 21 and the concave portion 22 are formed on the entire surface of the pressure-sensitive adhesive layer 20. Since there is a gap between the convex portions 21, even if air intervenes between the adhesive layer 20 and the adherend, the air is discharged through the gap between the convex portions 21 and the adhesive sheet 10 is swollen. Is prevented.
  • the adhesive layer 20 when the adhesive layer 20 is in light contact with the adherend, the adhesive layer 20 contacts the adherend at the tip of the convex portion 21 and does not contact the adherend at the concave portion 22, so that the contact area with the adherend is large. It is suppressed and the adhesive force between the pressure-sensitive adhesive layer 20 and the adherend is weak. Therefore, the pressure-sensitive adhesive sheet 10 has a slidable property (sliding property) when the pressure-sensitive adhesive layer 20 is in light contact with the adherend.
  • the pressure-sensitive adhesive sheets 10A, 10B, and 10C of the comparative examples shown in FIGS. 6 to 8 have different shapes of the protrusions 21a, 21b, and 21c formed on the pressure-sensitive adhesive layer 20A, but all of them are formed on the flat surface of the pressure-sensitive adhesive layer 20A. , 21a, 21b, 21c are scattered and formed in an island shape, which is common.
  • the protrusions 21a, 21b, and 21c first disappear over time while being familiar with the adherend 1, and finally.
  • the adhesive layer 20A is flattened by the portion 23A separated from the adherend 1 in contact with the adherend 1, but in the comparative example, the unfamiliar portion 23A is wide on a flat surface, so that the adhesive layer 20A is widened. Is likely to take time to flatten and come into surface contact with the adherend 1.
  • the portion 23 separated from the adherend 1 does not spread in a plane as in the comparative example. That is, the portion where it takes time to become familiar with the adherend 1 is suppressed, and the adhesive layer 20 is flattened and easily comes into surface contact with the adherend 1. Therefore, the adhesive force can be suitably exhibited in the pressure-sensitive adhesive layer 20.
  • the convex portions 110 and the concave portions 120 are alternately formed in the two directions D1 and D2 that intersect each other along the surface 101, and the surface of the pressure-sensitive adhesive layer 20 is formed by this configuration.
  • the convex portion 21 and the concave portion 22 are formed by arranging them two-dimensionally. Therefore, the adhesive sheet 10 easily exhibits slidability in various surface directions and is easy to align.
  • a peeling liner 200 in which a ridge portion 210 extending linearly and reaching the edge of the surface 101 is formed on a surface 101 on which a convex portion 110 and a concave portion 120 are formed is also described in the present invention. Included in the range.
  • a plurality of ridges 210 are formed, but the number thereof is not particularly limited. Further, the form in which the ridge portions 210 extend in parallel is not limited to the form in which the ridge portions 210 intersect with each other in a grid pattern. Further, the cross-sectional shape of the ridge portion 210 is not limited to a triangle as shown in the figure.
  • the present invention also includes a peeling liner 300 in which convex portions 110 and concave portions 120 are alternately formed in only one direction D1.
  • the pressure-sensitive adhesive sheet 10 of the above-described embodiment has the release liner 100, the pressure-sensitive adhesive layer 20, and the base material layer 30 in this order in the stacking direction, but a form having other layers is also within the scope of the present invention. included.
  • the method for forming a predetermined shape on the surface of the release liner of the present invention is not particularly limited, but for example, a mold or roller having a fine uneven shape formed on the surface as shown in FIG. 12 is a source of the release liner.
  • a predetermined shape may be formed on the surface of the release liner by pressing the smooth surface of the liner material.
  • the fine uneven shape shown in FIG. 12 can be formed, for example, by providing a plurality of grooves extending along each direction on the surface of the mold or roller in each of the directions D3 and D4 intersecting each other.
  • the groove extending in the direction D3 and the groove extending in the direction D4 can be formed by using, for example, a diamond bite, a laser, a combination of a laser and etching, an end mill, or the like, and can also be formed by electroforming. is there.
  • the release liner 400 having the surface shape shown in FIG. 13 is produced.
  • at least the surface of the liner material is formed of a thermoplastic resin such as polyethylene (PE) so that the surface of the liner material can be easily deformed into a predetermined shape, and the same surface is heated by a roller or a mold. You may press it.
  • PE polyethylene
  • the release liner 400 shown in FIG. 13 has a surface shape in which the fine uneven shape shown in FIG. 12 is inverted and transferred, and the surface shape has a plurality of convex portions 410 extending in the direction D1 and a direction. A plurality of convex portions 430 extending to D2 are formed so as to intersect each other.
  • the convex portion 410 is curved and narrowed while the inclination continuously changes toward the tip 411, and is inclined so as to spread from the tip 411 to the hem.
  • the concave portion 420 between the 410s is inclined and narrowed from the hem of the convex portion 410 to the deepest portion 421, and these features are common to the above-described embodiment.
  • the shape of the convex portion 410 is the same as the shape of the convex portion 430
  • the shape of the concave portion 420 is the same as the shape of the concave portion between the convex portions 430.
  • the convex portion 410 (430) and the concave portion 420 (the concave portion between the convex portions 430) of the release liner 400 are formed on the surface of the adhesive layer 2000. Is inverted to form a transferred uneven shape.
  • the uneven shape of the surface of the pressure-sensitive adhesive layer 2000 is the same as the uneven shape shown in FIG.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
PCT/JP2019/042875 2019-10-31 2019-10-31 剥離ライナーおよび粘着シート Ceased WO2021084703A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2019/042875 WO2021084703A1 (ja) 2019-10-31 2019-10-31 剥離ライナーおよび粘着シート
JP2021553726A JP7702357B2 (ja) 2019-10-31 2020-10-30 剥離ライナーおよび粘着シート
PCT/JP2020/040855 WO2021085610A1 (ja) 2019-10-31 2020-10-30 剥離ライナーおよび粘着シート
US17/766,603 US20240150624A1 (en) 2019-10-31 2020-10-30 Release liner and adhesive sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/042875 WO2021084703A1 (ja) 2019-10-31 2019-10-31 剥離ライナーおよび粘着シート

Publications (1)

Publication Number Publication Date
WO2021084703A1 true WO2021084703A1 (ja) 2021-05-06

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Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2019/042875 Ceased WO2021084703A1 (ja) 2019-10-31 2019-10-31 剥離ライナーおよび粘着シート
PCT/JP2020/040855 Ceased WO2021085610A1 (ja) 2019-10-31 2020-10-30 剥離ライナーおよび粘着シート

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/040855 Ceased WO2021085610A1 (ja) 2019-10-31 2020-10-30 剥離ライナーおよび粘着シート

Country Status (3)

Country Link
US (1) US20240150624A1 (https=)
JP (1) JP7702357B2 (https=)
WO (2) WO2021084703A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004075845A (ja) * 2002-08-19 2004-03-11 Dainippon Printing Co Ltd 粘着シート
JP2007512163A (ja) * 2003-11-21 2007-05-17 スリーエム イノベイティブ プロパティズ カンパニー 構造的紙剥離ライナ、接着剤付き物品組み立て品およびその製造方法
JP2010083915A (ja) * 2008-09-29 2010-04-15 Nichiban Co Ltd 粘着シートの粘着剤層表面に凹凸を形成するための剥離シート

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6524675B1 (en) * 1999-05-13 2003-02-25 3M Innovative Properties Company Adhesive-back articles
US6759110B1 (en) * 2000-08-15 2004-07-06 3M Innovative Properties Company Structured release liners with improved adhesion to adhesive articles
US6984427B2 (en) * 2002-01-10 2006-01-10 3M Innovative Properties Company Microstructed release liner
JP2005171030A (ja) 2003-12-09 2005-06-30 Lintec Corp 剥離シート担持粘着シート
US7687126B2 (en) * 2005-08-22 2010-03-30 3M Innovative Properties Company Adhesive articles and release liners
WO2009131792A1 (en) * 2008-04-22 2009-10-29 3M Innovative Properties Company Adhesive article
JP5155260B2 (ja) 2008-10-01 2013-03-06 日東電工株式会社 セパレータの製造方法、セパレータ及びセパレータ付き粘着テープ
KR101242330B1 (ko) 2009-12-30 2013-03-12 (주)엘지하우시스 이형필름 및 이의 제조방법
US20210017426A1 (en) 2018-04-04 2021-01-21 3M Innovative Properties Company Chaotic non-continuous structures useful for functional adhesive systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004075845A (ja) * 2002-08-19 2004-03-11 Dainippon Printing Co Ltd 粘着シート
JP2007512163A (ja) * 2003-11-21 2007-05-17 スリーエム イノベイティブ プロパティズ カンパニー 構造的紙剥離ライナ、接着剤付き物品組み立て品およびその製造方法
JP2010083915A (ja) * 2008-09-29 2010-04-15 Nichiban Co Ltd 粘着シートの粘着剤層表面に凹凸を形成するための剥離シート

Also Published As

Publication number Publication date
JP7702357B2 (ja) 2025-07-03
WO2021085610A1 (ja) 2021-05-06
US20240150624A1 (en) 2024-05-09
JPWO2021085610A1 (https=) 2021-05-06

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