WO2013141215A1 - Film à appliquer sur une fenêtre - Google Patents

Film à appliquer sur une fenêtre Download PDF

Info

Publication number
WO2013141215A1
WO2013141215A1 PCT/JP2013/057697 JP2013057697W WO2013141215A1 WO 2013141215 A1 WO2013141215 A1 WO 2013141215A1 JP 2013057697 W JP2013057697 W JP 2013057697W WO 2013141215 A1 WO2013141215 A1 WO 2013141215A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
adhesive layer
pressure
window
sensitive adhesive
Prior art date
Application number
PCT/JP2013/057697
Other languages
English (en)
Japanese (ja)
Inventor
弘司 難波
Original Assignee
株式会社 きもと
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 株式会社 きもと filed Critical 株式会社 きもと
Publication of WO2013141215A1 publication Critical patent/WO2013141215A1/fr

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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
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • 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
    • C09J2301/312—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 parameters being the characterizing feature

Definitions

  • the present invention relates to a window pasting film having a support, an adhesive layer, and a separator in this order.
  • Patent Document 1 discloses a scattering prevention pressure-sensitive adhesive sheet having a hard coat layer on the surface opposite to the pressure-sensitive adhesive layer of the base film, and prevents the hard coat layer from being lifted off when the pressure-sensitive adhesive sheet is punched. Therefore, it is described that the storage elastic modulus (0 ° C.) of the pressure-sensitive adhesive is within a predetermined range.
  • the window pasting film is usually provided with an adhesive layer on the support, and then the adhesive layer and the separator are bonded together, wound up in a roll shape, and stored.
  • an object of this invention is to provide the film for window sticking which can reduce
  • the present inventors have found the following. First, it is found that the crater of the adhesive layer is generated in the adhesive layer located closer to the winding core when it is wound and stored in a roll shape, but is not generated in the adhesive layer closer to the roll surface layer. It was. The difference depending on the location of crater generation is thought to be due to the difference in pressure applied to the adhesive layer between the roll core side and the surface layer side, and the pressure applied to the adhesive layer and crater generation in the roll state As a result, it was found that when pressure is applied to the adhesive layer, the adhesive layer is deformed to generate craters. And it discovered that by making the hardness of an adhesion layer into a specific hardness, it was possible to resist the pressure in the roll state and prevent the occurrence of craters without reducing the function as the adhesion layer.
  • the window pasting film of the present invention has a support, an adhesive layer, and a separator in this order, and the storage elastic modulus at 20 ° C. of the adhesive layer is 4.5 ⁇ 10 4 Pa or more. Is.
  • the film for window pasting of this invention Preferably, the storage elastic modulus in 20 degreeC of the said adhesion layer is 2.0 * 10 ⁇ 5 > Pa or less, It is characterized by the above-mentioned.
  • the window pasting film of the present invention is preferably characterized in that it has a functional layer on the surface opposite to the surface having the adhesive layer of the support.
  • the window pasting film of the present invention reduces the occurrence of craters in the adhesive layer and can exhibit a good appearance when wound and stored in a roll shape. .
  • the film for window pasting of this invention has a support body, an adhesion layer, and a separator in this order, and the storage elastic modulus in 20 degreeC of the said adhesion layer is 4.5x10 ⁇ 4 > Pa or more, It is characterized by the above-mentioned. is there.
  • the storage elastic modulus in 20 degreeC of the said adhesion layer is 4.5x10 ⁇ 4 > Pa or more, It is characterized by the above-mentioned. is there.
  • embodiments of each component will be described.
  • the support used in the window pasting film of the present invention includes a plastic film.
  • the plastic film include polyester, polycarbonate, acrylic, triacetyl cellulose, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyamide, polyimide, vinylidene chloride-vinyl chloride copolymer, and the like.
  • Such a support may contain various commonly used ultraviolet absorbers, antioxidants, anti-aging agents, slip agents, etc., or may have a layer containing these separately. .
  • the thickness of the support varies depending on the application used, it cannot be generally stated, but is preferably 10 ⁇ m to 350 ⁇ m, more preferably 30 ⁇ m to 188 ⁇ m.
  • the adhesive layer is laminated on one surface of the support and has a hardness that does not deform with a predetermined pressure.
  • Predetermined pressure is the pressure applied to the core in the state of being wound and stored in a roll, and it varies depending on the diameter of the roll and the diameter of the core, but specifically about 10 kg to 30 kg relative to the roll width. This is a pressure generated when a winding tension of 1 is applied.
  • the adhesive layer has a storage elastic modulus at 20 ° C. of 4.5 ⁇ 10 4 Pa or more, preferably 4.9 ⁇ 10 4 Pa or more, more preferably 5.3 ⁇ 10 4 Pa or more.
  • the storage elastic modulus at 20 ° C. of the adhesive layer is preferably 2.0 ⁇ 10 5 Pa or less, more preferably 1.8 ⁇ 10 5 or less, and further preferably 1.6 ⁇ 10 5 or less.
  • the storage elastic modulus at 20 ° C. of the adhesive layer is 2.0 ⁇ 10 5 Pa or less, sufficient adhesive force is easily obtained.
  • the storage elastic modulus (20 degreeC) of the adhesion layer mentioned above can be prepared by adjusting the adhesive which comprises an adhesion layer, its molecular weight, and an additive. Moreover, when forming an adhesion layer by application
  • materials will be described.
  • the pressure-sensitive adhesive a natural resin-based pressure-sensitive adhesive, a synthetic resin-based pressure-sensitive adhesive, or the like is used, and a synthetic resin-based pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, or a urethane-based pressure-sensitive adhesive is preferably used. Among these, a crosslinkable acrylic pressure-sensitive adhesive that has weather resistance and is easy to handle is preferably used.
  • the storage elastic modulus of the pressure-sensitive adhesive itself tends to increase when the molecular weight of the pressure-sensitive adhesive is large, and decreases when the molecular weight is small.
  • the lower limit of the weight average molecular weight of the pressure-sensitive adhesive is preferably 300,000 or more, more preferably 400,000 or more, further preferably 500,000 or more
  • the upper limit is preferably 900,000 or less, more preferably 800,000 or less, and more preferably 700,000 or less. preferable.
  • the storage elastic modulus at 20 ° C. of the adhesive layer can be easily adjusted to 4.5 ⁇ 10 4 Pa or more.
  • the storage elastic modulus of the adhesive itself when the storage elastic modulus of the adhesive itself is low, the storage elastic modulus can be increased by using a crosslinking agent. Furthermore, the storage elastic modulus can be increased by using a crosslinking accelerator in addition to the crosslinking agent.
  • an isocyanate crosslinking agent an epoxy crosslinking agent, an imine crosslinking agent, a metal chelate, or the like can be used.
  • a suitable ratio of the pressure-sensitive adhesive and the crosslinking agent is such that the lower limit of the crosslinking agent is preferably 0.01 parts by weight or more, more preferably 0.1 parts by weight or more, and 0.4 parts by weight or more with respect to 100 parts by weight of the pressure-sensitive adhesive.
  • the upper limit is preferably 10 parts by weight or less, more preferably 5 parts by weight or less, and still more preferably 1 part by weight or less.
  • the crosslinking agent component By setting the crosslinking agent component to 0.01 parts by weight or more, the storage elastic modulus at 20 ° C. of the adhesive layer can be adjusted to 4.5 ⁇ 10 4 Pa or more. On the other hand, when the amount is 10 parts by weight or less, the adhesive strength is excellent.
  • the crosslinking accelerator a tin-based crosslinking accelerator, an aluminum-based crosslinking accelerator, or the like can be used.
  • the suitable ratio of the crosslinking agent and the crosslinking accelerator is preferably 0.1 parts by weight or more, more preferably 1 part by weight or more, and more preferably 5 parts by weight or more at the lower limit of the crosslinking accelerator component with respect to 100 parts by weight of the crosslinking agent component.
  • the upper limit is preferably 50 parts by weight or less, more preferably 40 parts by weight or less, and even more preferably 10 parts by weight or less.
  • the amount of the pressure-sensitive adhesive layer can be adjusted to 4.5 ⁇ 10 4 Pa or more.
  • the amount is 50 parts by weight or less, the increase in the viscosity of the liquid containing the pressure-sensitive adhesive, the crosslinking agent, and the crosslinking accelerator is reduced, and coating becomes easy.
  • the thickness of the adhesive layer is not particularly limited, it is preferably 2 ⁇ m to 60 ⁇ m and more preferably 5 ⁇ m to 40 ⁇ m in consideration of the sticking property to the adherend of the film for window pasting, peelability and the like. If it is 5 ⁇ m or less, the tackiness is unstable, and if it is 40 ⁇ m or more, the pressure-sensitive adhesive protrudes from the side of the film, resulting in inconvenience in handling.
  • crosslinking agents and crosslinking accelerators in addition to adhesives, crosslinking agents and crosslinking accelerators, retarders, pigments, dyes, colorants, matting agents, antistatic agents, flame retardants, fungicides, rust inhibitors, antibacterial agents, UV absorption Additives such as additives, light stabilizers, heat stabilizers, antioxidants, plasticizers, leveling agents, flow regulators, antifoaming agents, dispersants, optical brighteners, storage stabilizers, silane coupling agents, etc. May be. However, the addition amount of these additives is preferably in a range that does not hinder the effect of the adhesive layer.
  • the pressure-sensitive adhesive layer is generally a coating solution obtained by dissolving or dispersing the above pressure-sensitive adhesive, a crosslinking agent and / or crosslinking accelerator added as necessary, and other additives in a solvent as necessary. Is formed by coating and drying on a support by a known coating method. In addition, if the adhesive layer is heated at 60 to 130 ° C. for 12 to 48 hours as necessary after coating and drying, the storage elastic modulus at 20 ° C. of the adhesive layer can be adjusted to 4.5 ⁇ 10 4 Pa or more.
  • the film for window pasting of the present invention has a configuration in which an adhesive layer is laminated on one surface of a support and the adhesive layer and a separator are bonded together.
  • Polyester, polyethylene, polypropylene, paper, etc. can be used as the separator base material to be bonded to the adhesive layer.
  • a separator using such a substrate is difficult to peel from the adhesive layer, it is preferable to provide a release treatment layer on the surface in contact with the adhesive layer.
  • a resin having good release properties such as fluorine and silicone, or a release agent such as silicone oil is mixed with the resin, and dissolved or dispersed in a solvent to form a coating solution.
  • the liquid can be formed by coating and drying by a known coating method.
  • an adhesive layer is formed on one surface of a support, and the surface on which the adhesive layer is formed and the surface on which the release treatment layer of the separator is formed are laminated. To do.
  • a structure having a functional layer on the surface opposite to the surface on which the adhesive layer is laminated of the support used for the window pasting film of the present invention is preferable.
  • the functional layer examples include a cured film for an anti-scratch film, a photocatalytic layer containing a photocatalytic material for a self-cleaning film such as a photocatalytic film, an ultraviolet absorbing layer for an ultraviolet absorbing film, and an infrared ray for an infrared absorbing film. If it is an absorption layer or a decorative film, there is an image receiving layer, if it is a colored film, there is a colored layer, and if it is a fogging-preventing film, there is an antifogging layer. These can use a well-known thing according to a use application.
  • a cured film will be described as an example of the functional layer.
  • the resin constituting the cured film it is preferable to use a curable resin such as a thermosetting resin having good transparency and an ionizing radiation curable resin.
  • thermosetting resins and ionizing radiation curable resins include polyester resins, acrylic resins, acrylic urethane resins, polyester acrylate resins, polyurethane acrylate resins, epoxy acrylate resins, urethane resins, epoxy resins, It is composed of polycarbonate resin, melamine resin, phenol resin, silicone resin, fluorine resin and the like.
  • thermoplastic resin may be mixed with these curable resins. By adding a thermoplastic resin, the hardness of the cured film can be adjusted.
  • thermoplastic resin examples include acrylic resins, polyester resins, cellulose resins, vinyl resins, polyethylene resins, polystyrene resins, and polypropylene resins. These resins can be used alone or in combination.
  • an ultraviolet absorber, an infrared absorber, or the like can be added, whereby an ultraviolet absorbing function or an infrared absorbing function can be imparted in addition to the scratch preventing function.
  • the formed sheet sample was hollowed out into a cylindrical shape having a diameter of 25 mm, and a test piece having a diameter of 25 mm and a thickness of 600 ⁇ m consisting of only an adhesive layer was prepared. And the storage elastic modulus at 20 degrees C of the adhesion layer was measured for the test piece at the frequency of 1 Hz by the torsional shear method using the viscoelasticity measuring apparatus (PhysicaMCR301: Anton Paar).
  • the film for window pasting of Examples 1 and 2 has a storage elastic modulus at 20 ° C. of 4.5 ⁇ 10 4 Pa or more of the adhesive layer, and the number of craters generated in the adhesive layer is less than 1 / m 2 . Appearance was good. Moreover, sufficient adhesive force was acquired because the storage elastic modulus in 20 degreeC of an adhesion layer is 2.0 * 10 ⁇ 5 > Pa or less.
  • the film for window pasting of Comparative Examples 1 and 2 has a storage elastic modulus of 4.5 ⁇ 10 4 Pa or less at 20 ° C. of the adhesive layer, and the number of craters generated in the adhesive layer is 1 / m 2. As a result, the appearance was poor.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un film qui doit être appliqué sur une fenêtre et qui porte un substrat, une couche adhésive sensible à la pression et un séparateur dans cet ordre, la couche adhésive sensible à la pression présentant un module de stockage de 4,5 × 104 à 2,0 × 105 Pa à 20°C. Le film peut porter en outre une couche fonctionnelle telle qu'un revêtement dur sur la surface de dos du substrat, à savoir, sur la surface de celui-ci qui est au dos de la surface sur laquelle la couche adhésive sensible à la pression est présente. La couche adhésive sensible à la pression du film souffre d'une faible formation de cratères, à savoir, forme peu de bosses ou de dépressions même quand le film est stocké sous la forme d'un rouleau. Par conséquent, le film peut parvenir à un bon aspect de surface lorsqu'il est appliqué sur une fenêtre.
PCT/JP2013/057697 2012-03-23 2013-03-18 Film à appliquer sur une fenêtre WO2013141215A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-066832 2012-03-23
JP2012066832 2012-03-23

Publications (1)

Publication Number Publication Date
WO2013141215A1 true WO2013141215A1 (fr) 2013-09-26

Family

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PCT/JP2013/057697 WO2013141215A1 (fr) 2012-03-23 2013-03-18 Film à appliquer sur une fenêtre

Country Status (3)

Country Link
JP (1) JPWO2013141215A1 (fr)
TW (1) TWI579361B (fr)
WO (1) WO2013141215A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016121301A (ja) * 2014-12-25 2016-07-07 王子ホールディングス株式会社 粘着性フィルム
JP2019143070A (ja) * 2018-02-22 2019-08-29 リンテック株式会社 粘着シート巻回体
JP2019217658A (ja) * 2018-06-18 2019-12-26 リンテック株式会社 飛散防止フィルム

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001234129A (ja) * 2000-02-23 2001-08-28 Mitsubishi Plastics Ind Ltd 中間膜用粘着シート及び合わせガラス積層体
JP2005239956A (ja) * 2004-02-27 2005-09-08 Lintec Corp 粘着シート
JP2010261029A (ja) * 2009-04-08 2010-11-18 Toagosei Co Ltd 活性エネルギー線硬化型粘接着剤組成物
JP2011168652A (ja) * 2010-02-16 2011-09-01 Lintec Corp 飛散防止用粘着シート、飛散防止ガラスパネル、および携帯情報端末機器
WO2011118367A1 (fr) * 2010-03-24 2011-09-29 シャープ株式会社 Corps stratifié
JP2011219665A (ja) * 2010-04-13 2011-11-04 Mitsubishi Plastics Inc 透明粘着シートおよび画像表示装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011225835A (ja) * 2010-03-30 2011-11-10 Nippon Synthetic Chem Ind Co Ltd:The 粘着剤組成物、粘着剤、両面粘着シート、光学部材用粘着剤、タッチパネル
JP2012021167A (ja) * 2011-10-19 2012-02-02 Nitto Denko Corp 偏光板表面保護フィルム、該表面保護フィルムで保護された偏光板および該表面保護フィルムを使用した偏光板の表面保護方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001234129A (ja) * 2000-02-23 2001-08-28 Mitsubishi Plastics Ind Ltd 中間膜用粘着シート及び合わせガラス積層体
JP2005239956A (ja) * 2004-02-27 2005-09-08 Lintec Corp 粘着シート
JP2010261029A (ja) * 2009-04-08 2010-11-18 Toagosei Co Ltd 活性エネルギー線硬化型粘接着剤組成物
JP2011168652A (ja) * 2010-02-16 2011-09-01 Lintec Corp 飛散防止用粘着シート、飛散防止ガラスパネル、および携帯情報端末機器
WO2011118367A1 (fr) * 2010-03-24 2011-09-29 シャープ株式会社 Corps stratifié
JP2011219665A (ja) * 2010-04-13 2011-11-04 Mitsubishi Plastics Inc 透明粘着シートおよび画像表示装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016121301A (ja) * 2014-12-25 2016-07-07 王子ホールディングス株式会社 粘着性フィルム
JP2019143070A (ja) * 2018-02-22 2019-08-29 リンテック株式会社 粘着シート巻回体
JP7138448B2 (ja) 2018-02-22 2022-09-16 リンテック株式会社 粘着シート巻回体
JP2019217658A (ja) * 2018-06-18 2019-12-26 リンテック株式会社 飛散防止フィルム
JP7078465B2 (ja) 2018-06-18 2022-05-31 リンテック株式会社 飛散防止フィルム

Also Published As

Publication number Publication date
TW201343870A (zh) 2013-11-01
JPWO2013141215A1 (ja) 2015-08-03
TWI579361B (zh) 2017-04-21

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