WO2020059855A1 - Feuille adhésive - Google Patents

Feuille adhésive Download PDF

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Publication number
WO2020059855A1
WO2020059855A1 PCT/JP2019/036990 JP2019036990W WO2020059855A1 WO 2020059855 A1 WO2020059855 A1 WO 2020059855A1 JP 2019036990 W JP2019036990 W JP 2019036990W WO 2020059855 A1 WO2020059855 A1 WO 2020059855A1
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WO
WIPO (PCT)
Prior art keywords
sheet
pressure
sensitive adhesive
layer
adhesive layer
Prior art date
Application number
PCT/JP2019/036990
Other languages
English (en)
Japanese (ja)
Inventor
将志 関
上山　弘徳
Original Assignee
大日本印刷株式会社
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Filing date
Publication date
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Publication of WO2020059855A1 publication Critical patent/WO2020059855A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • 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]

Definitions

  • the present invention relates to an adhesive sheet.
  • an adhesive is applied to a decorative sheet and laminated (attached) to wood, non-combustible material, or the like.
  • an adhesive instead of the adhesive, it is difficult to reuse a decorative sheet in the form of lamination using a conventional adhesive, such as re-peeling and re-attaching. If the preparation of a cosmetic material fails due to wrinkles during application, it is necessary to peel off the decorative sheet and discard it, or to reuse the adherend, it is necessary to clean the adhesive layer remaining on the adherend surface. Was. For this reason, the production of a decorative material using a decorative sheet and the work of attaching the decorative sheet require special equipment or a skilled technique (person). it was high.
  • Patent Document 1 discloses a technique relating to a micro suction cup film formed of an adhesive layer having a large number of fine suction cup groups on an adherend side surface. Since this micro suction cup film can be reversibly attached and peeled to and from an adherend, if an adhesive layer comprising such a micro suction cup film can be provided on the pressure-sensitive adhesive sheet, a pressure-sensitive adhesive sheet having reworkability can be obtained. It is considered possible.
  • the composition disclosed in Patent Literature 1 is capable of producing a micro suction cup film even at a temperature of about room temperature, when the applied composition is dried at room temperature, a very long drying time is required. In practice, drying while heating was required.
  • a pressure-sensitive adhesive sheet is provided with a resin layer in which a concave-convex shape for improving design properties is provided, or a printed layer is provided.
  • a pressure-sensitive adhesive sheet provided with a resin layer, a printing layer, etc. if heated during manufacturing for the formation of a micro suction cup film, the shape of the uneven shape changes, and in severe cases, the uneven shape disappears, or the resin layer or There is a possibility that the printed layer or the like may be damaged, and the above-mentioned composition cannot be applied to the pressure-sensitive adhesive sheet and used.
  • An object of the present invention is to provide a pressure-sensitive adhesive sheet having reworkability.
  • the present invention solves the above problems by the following means.
  • description is given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this.
  • a first sheet (10), an adhesive layer (13) laminated on a back surface of the first sheet (10), and the first sheet (10) of the adhesive layer (13) are:
  • the concave shape (13a) is uniformly formed on both surfaces of the pressure-sensitive adhesive layer (13). Sheet (1).
  • the average value of the diameters of the respective openings of the concave shape (13a) opening on the surface on the first sheet (10) side is D. ave 1 and
  • the pressure-sensitive adhesive sheet (1) which satisfies a relationship of ave 2 ⁇ 0.5.
  • a fourth invention is the pressure-sensitive adhesive sheet (1) according to any one of the first invention to the third invention, wherein the thickness t of the pressure-sensitive adhesive layer (13) is in a range of 20 ⁇ m ⁇ t ⁇ 40 ⁇ m.
  • An adhesive sheet (1) characterized in that:
  • the pressure-sensitive adhesive layer (13) includes bubbles in the liquid resin composition (130).
  • the first sheet (10) and the second sheet (14) are both peelable.
  • the pressure-sensitive adhesive sheet (1) comprising a base sheet (14).
  • the first sheet (10) is a surface layer sheet (10) which becomes a surface after pasting.
  • the second sheet (14) is a pressure-sensitive adhesive sheet (1), which is a peelable substrate sheet (14).
  • the pressure-sensitive adhesive layer (13) is obtained by applying a liquid resin composition (130) to the peelable substrate sheet (14). After drying by drying, the surface layer sheet (10) is laminated to constitute the pressure-sensitive adhesive sheet (1).
  • the surface sheet (10) is formed of paper or a thermoplastic resin. It is a pressure-sensitive adhesive sheet (1).
  • a pressure-sensitive adhesive sheet having reworkability can be provided.
  • FIG. 9 is a diagram showing observation results of Sample 1.
  • FIG. 9 is a diagram showing observation results of Sample 2.
  • FIG. 9 is a diagram showing observation results of Sample 3.
  • FIG. 9 is a diagram showing observation results of Sample 4.
  • FIG. 1 is a view showing a first embodiment of a decorative sheet according to the present invention.
  • each figure shown below including FIG. 1 is a diagram schematically shown, and the size and shape of each part are exaggerated as appropriate for easy understanding.
  • specific numerical values, shapes, materials, and the like will be described, but these can be changed as appropriate.
  • the terms such as plate, sheet, and film are used, but these are generally used in the order of thickness, plate, sheet, and film in the order of thickness. I use it even in the book. However, since such use does not have a technical meaning, these terms can be appropriately replaced.
  • the first sheet is provided with a resin layer 12 having an irregular shape (irregular pattern) on the surface on the side exposed to the outside so as to be observable after lamination with the substrate 11.
  • a resin layer 12 having an irregular shape (irregular pattern) on the surface on the side exposed to the outside so as to be observable after lamination with the substrate 11.
  • a description will be given with reference to the decorative sheet 1 composed of the surface layer sheet 10 described above.
  • various types of pressure-sensitive adhesive sheets having only the printing layer without the resin layer 12 on the base material 11 may be used.
  • the resin layer 12 and the printing layer may be provided, or the resin layer 12 may not be provided on the base material 11 and only the unevenness may be provided on the base material surface.
  • the same configuration can be applied to various types of pressure-sensitive adhesive sheets other than the decorative sheet.
  • the decorative sheet 1 includes a first sheet formed by laminating and bonding a substrate 11 and a resin layer 12, an adhesive layer 13, and a peelable substrate sheet 14. ing.
  • the base material 11 is a layer serving as a base necessary for forming the resin layer 12.
  • paper may be used as a material, or a resin sheet may be used as a material.
  • the resin layer 12 is laminated on the front surface of the base material 11, and a plurality of irregularities are formed on the surface.
  • the resin layer 12 shown in FIG. 1 is shown as a single layer for easy understanding, the resin layer 12 may be composed of a plurality of layers having different compositions and structures.
  • the uneven shape of the resin layer 12 may represent, for example, a pipe of wood, a surface unevenness of a fabric, or an uneven shape of a stone material. It may be in a form.
  • Examples of the resin forming the resin layer 12 include cellulose resin, polycarbonate resin, acrylic resin, styrene butadiene resin (styrene butadiene rubber), polyisoprene, natural rubber, ethylene propylene rubber (EPR), and ethylene propylene diene ternary copolymer.
  • EPDM Combined rubber
  • polynorbornene polybutadiene, nitrile rubber, chloroprene rubber, butyl rubber, halogenated butyl rubber, ethylene-vinyl acetate rubber (EVA), polyurethane, silicone rubber, fluorine rubber, ethylene acrylic rubber, polyester elastomer, epichlorohydrin rubber, many Sulfurized rubber, chlorinated polyethylene, polyethylene, polystyrene, polyimide, polyvinyl chloride, polypropylene; polyolefin, polyurethane, polyester, poly Bromide system, and include polystyrene thermoplastic elastomer.
  • the first sheet 10 has been described with an example in which the base material 11 is directly laminated and bonded on the resin layer 12, but the present invention is not limited thereto.
  • another layer may be provided between the base material 11 and the resin layer 12.
  • a printed layer (pattern layer) on which a pattern is printed may be provided between the base material 11 and the resin layer 12, and the whole or a part of the resin layer 12 may be made of a transparent resin.
  • the adhesive layer 13 is laminated on the surface of the substrate 11 opposite to the resin layer 12 (the lower surface in FIG. 1, which is also referred to as the back surface of the substrate 11). This is a layer having adhesiveness to the adherend 50 (see FIG. 2).
  • the adhesive layer 13 has a plurality of concave shapes 13a opened on both surfaces thereof. Further, the adhesive layer 13 has elasticity, and since the plurality of concave shapes 13a each act as a fine suction cup, the adhesive layer 13 can exhibit adhesive force (adsorption force) to various adherends 50. (See FIG. 2 (c)).
  • the adhesive layer 13 is formed, for example, using a liquid resin composition (acryl emulsion) disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No.
  • the thickness t of the adhesive layer 13 is desirably 1 ⁇ m or more and 500 ⁇ m or less.
  • the thickness t of the adhesive layer 13 is desirably 1 ⁇ m or more and 500 ⁇ m or less.
  • the thickness is below the lower limit of the above-mentioned layer thickness range, it is difficult to form a concave shape, or the size of the concave shape becomes too small, so that the adhesion (adsorption) characteristics deteriorate.
  • the thickness exceeds the upper limit of the above-mentioned thickness range the flexibility of the decorative sheet is reduced and workability is deteriorated.
  • the thickness t of the adhesive layer 13 is desirably in the range of 20 ⁇ m ⁇ t ⁇ 40 ⁇ m. This will be described later.
  • the size and density of the concave shape 13a of the adhesive layer 13 can be adjusted by changing various conditions in a manufacturing process described later.
  • the density of the adhesive layer 13 can be used as an index indicating the degree to which the concave shape 13a is included in the adhesive layer 13.
  • the density of the adhesive layer 13 is not particularly limited, but may be, for example, 0.1 g / cm 3 or more and 0.6 g / cm 3 or less.
  • the size of the concave shape 13a is not particularly limited, but may be, for example, 1 ⁇ m or more and 300 ⁇ m or less.
  • the second sheet 14, which is a peelable substrate sheet, is on the opposite side of the adhesive layer 13 from the substrate 11 (the lower surface in FIG. 1, which is also referred to as the back surface of the adhesive layer 13). Are laminated.
  • the peelable base sheet 14 is provided in consideration of the handling property until the decorative sheet 1 is used, and the decorative sheet 1 is attached to the adherend 50 when the decorative sheet 1 is used, that is, on the adherend 50. When peeled off.
  • various types of conventionally known release films, separate papers, separate films, separate papers, release films, release papers and the like can be used as appropriate. For example, high quality paper, coated paper, impregnated paper, plastic film or the like having a release layer formed on one or both sides may be used.
  • the release layer is not particularly limited as long as it has a release property, and examples thereof include a silicone resin, an organic resin-modified silicone resin, a fluorine resin, an aminoalkyd resin, a melamine resin, an acrylic resin, and a polyester resin. Can be mentioned. These resins can be used in any of an emulsion type, a solvent type and a solventless type.
  • a release film having a release layer for example, a silicone release type PET (polyethylene terephthalate) film, an untreated PET film, a PP film, a silicone release type paper, or the like can be used.
  • the thickness of the releasable base material sheet 14 is preferably, for example, not less than 10 ⁇ m and not more than 100 ⁇ m, more preferably not less than 20 ⁇ m and not more than 60 ⁇ m.
  • the thickness is below the lower limit of the above-mentioned layer thickness range, there is no stiffness and it becomes difficult to peel off.
  • the thickness exceeds the upper limit of the above-mentioned thickness range, the stiffness is too strong and the workability at the time of bonding is reduced.
  • a commercially available product may be used as the releasable substrate sheet 14.
  • a 38 ⁇ m-thick polyester film (Mitsui Chemicals Tosello Co., Ltd.) having one surface subjected to an easy-peeling treatment with a silicone-based releasing agent may be used. And trade name: SP-PET-01).
  • FIG. 2 is a figure which shows the form at the time of use of the decorative sheet 1 sequentially.
  • the decorative sheet 1 described above includes a releasable base sheet 14 as shown in FIG.
  • the peelable substrate sheet 14 is peeled off (FIG. 2B).
  • the exposed pressure-sensitive adhesive layer 13 is attached to the adherend 50, and by applying an appropriate pressure to the surface thereof, a large number of concave shapes 13a existing on the exposed surface of the pressure-sensitive adhesive layer are elastically deformed.
  • it is adsorbed (adhered) to the adherend 50 (FIG. 2C).
  • the adhesive layer 13 is manufactured, if the amount of the concave shape 13a is adjusted, for example, using the density as a parameter, the adhesive force (adsorption force) of the adhesive layer 13 can be adjusted.
  • FIG. 3 is a diagram illustrating a manufacturing device of the decorative sheet 1.
  • FIG. 4 is a diagram illustrating a method for manufacturing the decorative sheet 1.
  • a composition of an acrylic emulsion disclosed in Patent Document 1 for forming the adhesive layer 13 is put into a stirrer 301, and the composition is mixed with nitrogen via a pipe 302. Stirring is performed while mixing the gas to prepare the bubble-containing composition 130 including the bubble B in the composition (P1: foaming step in the figure).
  • the bubble-containing composition 130 is applied on the releasable base material sheet (second sheet) 14 by the coating apparatus 303 (P2 in the figure: coating step).
  • a comma coater can be used as a coating device (coating unit), but other known coating methods may be used.
  • the bubble-containing composition 130 is heated by passing the bubble-containing composition 130 through the peelable substrate sheet 14 coated with the bubble-containing composition 130 in the drying device 304.
  • the adhesive layer 13 is formed (P3 in the figure: drying step).
  • a drying furnace having an internal atmosphere temperature of about 60 ° C. to 140 ° C. can be used.
  • the drying time may be, for example, about 30 seconds to 10 minutes.
  • drying may be promoted while blowing high-temperature air at a predetermined temperature to the bubble-containing composition 130. Further, other drying methods such as infrared radiation and dielectric heating can be adopted.
  • the concave shape 13a is formed on both surfaces of the bubble-containing composition 130, and the adhesive layer 13 is formed.
  • This concave shape 13a is formed by breaking bubbles contained in the bubble-containing composition 130 and leaving a part of the bubble shape.
  • the concave shape 13a hardly remains.
  • the drying step is performed under the condition that the foaming is performed in a state where the curing of the bubble-containing composition 130 has progressed to some extent. Therefore, the temperature and the amount of air blow in the drying process greatly affect the state of the concave shape 13a.
  • the surface layer sheet (first sheet) 10 having the substrate 11 and the resin layer 12 separately prepared using the laminating apparatus 305 is attached to the adhesive layer 13.
  • Bonding P4 in the figure: laminating step.
  • the laminating step since the lamination is performed by the attraction force (adhesion force) of the concave shape 13a of the adhesive layer 13, heating is not required, and the bonding can be performed with only a small pressing force. Therefore, there is no damage to the base material 11 and the resin layer 12 which are the surface sheets.
  • the decorative sheet 1 is completed.
  • the decorative sheet 1 can be efficiently produced without damaging the surface sheet by heat when the adhesive layer 13 is formed.
  • the decorative sheet may then be wound into a roll or cut into a required size.
  • the decorative sheet 1 of the present embodiment is actually produced, and results of comparison with a comparative example will be described.
  • the bubble-containing composition 130 having been subjected to the foaming step was applied to the peelable substrate sheet 14 on a biaxially stretched PET film having releasability using a comma coater having a clearance of 200 ⁇ m. .
  • This was dried in a drying path at 100 ° C. for 1 minute to form an adhesive layer 13, and a surface sheet was laminated to obtain a decorative sheet 1.
  • the density of the adhesive layer 13 was 0.39 g / cm 3 and the thickness was 50 ⁇ m.
  • FIG. 5 is an enlarged photograph of the pressure-sensitive adhesive layer 13 of the decorative sheet 1 of the example viewed from the direction of the adherend.
  • FIG. 6 is the figure expanded by the cross section of the direction orthogonal to the sheet surface of the adhesive layer 13 of the decorative sheet 1 of an Example. As shown in FIGS. 5 and 6, it can be confirmed that the adhesive layer 13 has a large number of concave shapes 13a.
  • a decorative sheet was prepared in the same manner as in the above example, except that the step of only foam was not performed.
  • the density of the pressure-sensitive adhesive layer after preparation was 0.87 g / cm 3 , and the thickness was 100 ⁇ m.
  • a decorative sheet (acrylic adhesive A type) in which an adhesive layer was prepared using an acrylic resin, SK2094 manufactured by Soken Chemical Co., Ltd. was prepared.
  • FIG. 7 is a diagram illustrating the peeling force of the example and the comparative example.
  • the peeling force in FIG. 7 is the result of measuring 180 ° peeling at a pulling speed of 300 mm / min using a tensile tester and measuring the peeling force at that time. The peeling force was measured immediately after the application (0 hour) and after 1000 hours from the application.
  • the peeling can be performed with a relatively small peeling force both immediately after the application and after the lapse of 1000 hours. With this level of peeling force, there is no spontaneous peeling, and it is possible to easily peel off by applying a force to peel. Moreover, since the suction is performed by the concave shape 13a, the adhesive layer 13 does not remain on the surface of the adherend 50 after peeling, and the adhesive force (peeling force) of the adhesive layer 13 itself does not substantially change. Pasting was possible. In Comparative Example 1, a small piece can be peeled with a relatively small peeling force, but a large size requires a certain force for peeling.
  • Comparative Example 2 requires a certain amount of force for peeling in the case of a large size, and can be peeled immediately after pasting, but after 1000 hours, the peeling force increases significantly. In such a case, it was difficult to peel off the sheet by hand, or there was a risk that the surface sheet would be damaged if the sheet was forcibly peeled off. In Comparative Example 3, the peeling force was too large immediately after the application, and the peeling was difficult by manual work, or the surface layer sheet might be damaged if it was forcibly peeled off. Also, in each of Comparative Examples 2 and 3, after peeling, a part of the adhesive material remained on the adherend, or the adhesive strength was reduced, so that it was not suitable for re-attaching. .
  • the concave shape 13a of the adhesive layer 13 has a large effect on the adhesive strength. If the concave shape 13a is not evenly provided on both surfaces of the adhesive layer 13, there is a possibility that one surface of the adhesive layer has reduced or increased adhesive force (adhesive force) as compared with the other surface. In addition, since the concave shape 13a is uniformly provided on both surfaces of the adhesive layer 13, the physical properties of the adhesive layer 13 are also uniform, and the surface sheet (first sheet) and the peelable base sheet (second sheet), Alternatively, it is preferable in terms of sufficient adhesion to both the surface layer sheet (first sheet) and the adherend and removability from the adherend.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2017-36404 does not consider anything at all, and states that it is only necessary to form a micro sucker.
  • FIG. 2 FIG. 2 of Patent Document 1 which is a cross-sectional photograph of Example 1 formed with a WET film thickness of 800 ⁇ m, a portion shown as a surface having a micro suction cup has a fine suction cup structure.
  • a micro suction cup (corresponding to the concave shape 13a in the present embodiment) is formed on one surface of the adhesive layer, but the micro suction cup (concave shape 13a) is formed on the other surface. Are not substantially formed.
  • the applicant also conducted a verification experiment.
  • a verification experiment four types of samples of the adhesive layer were prepared, and the concave shapes 13a on both surfaces thereof were observed by SEM.
  • the samples are the following four types.
  • Sample 4 adhesive layer thickness t ⁇ 2000 ⁇ m
  • the layer thickness of the sample is a layer thickness after drying.
  • the foam-containing composition after the foaming treatment was applied to the glass surface using a coater, and the drying treatment was performed using a drying oven at 100 degrees. Sample 4 was applied dropwise onto the glass surface and air-dried at room temperature. The reason for changing the drying conditions for Sample 4 is also to verify the description in Patent Document 1 that normal temperature drying is sufficient.
  • the density of the pressure-sensitive adhesive layer after the foaming treatment was 0.4 g / cm 3 .
  • FIG. 8 is a diagram showing the observation results of Sample 1.
  • FIG. 9 is a diagram showing the observation results of Sample 2.
  • FIG. 10 is a diagram showing the observation results of Sample 3.
  • FIG. 11 is a diagram showing the observation results of Sample 4.
  • the thickness t of the adhesive layer 13 is desirably in the range of 20 ⁇ m ⁇ t ⁇ 40 ⁇ m in order to uniformly provide the concave shapes 13 a on both surfaces of the adhesive layer 13.
  • the state in which the concave shapes 13a are evenly provided on both surfaces of the adhesive layer 13 more specifically satisfy the following relationship.
  • the average value of the diameter of each opening of the concave shape 13a opening on the surface on the surface layer sheet (first sheet) side is set to Dave 1, and each of the concave shapes 13a opening on the releasable base material sheet (second sheet) side.
  • the mean value of the diameters of the openings when the D ave 2
  • the surface sheet (first sheet) and the peelable substrate sheet (second sheet), or the surface sheet ( A sufficient adhesive force to both the first sheet) and the adherend and removability from the adherend can be exhibited well.
  • the average value of the diameters of the respective apertures is not practically possible to obtain the average of all the apertures. Therefore, in this case, the aperture having the larger diameter within the observation range of 1500 ⁇ m ⁇ 1100 ⁇ m is used. The diameter of each of the three openings was measured in order from, and the average value was obtained.
  • the pressure-sensitive adhesive sheet of the present invention As an embodiment of the pressure-sensitive adhesive sheet of the present invention, a decorative sheet that imparts a desired design appearance to various adherend surfaces has been described as an example.
  • the decorative sheet has various uses when classified more finely, and the pressure-sensitive adhesive sheet of the present invention can be applied in these various uses.
  • the pressure-sensitive adhesive sheet of the present invention is not limited to a decorative sheet and can be applied to various uses.
  • specific examples to which the pressure-sensitive adhesive sheet of the present invention can be suitably applied will be described.
  • the pressure-sensitive adhesive sheet of the present invention can be applied as a decorative sheet for floors. More specifically, for example, it can be applied to cushion floors, to square tiles, to non-slip sheets on stairs, to carpets, or to bath mats (bath floor coverings) or kitchen mats. (Kitchen floor rugs). Due to the easily peelable and re-attachable properties of the pressure-sensitive adhesive sheet of the present invention, not only can the workability at the time of building the house be improved, but also the interior redressing work by the resident himself after the building of the house, that is, a simple reform Can be easily constructed.
  • these floor decorative sheets are adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) due to the numerous fine concave shapes 13a, they can be easily peeled off, there is no adhesive residue, and the adherend is not adhered. Since it is possible to prevent damage to the floor, it is possible to easily restore the state before the decorative sheet for floor is attached.
  • the decorative sheet for a wall is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) due to the numerous fine concave shapes 13a, it can be easily peeled off, there is no adhesive residue, and the adherend is not adhered. Can be prevented from being damaged, and it can be easily restored to the state before the wall decorative sheet was attached.
  • the pressure-sensitive adhesive sheet of the present invention can be applied as a decorative sheet for ceiling.
  • Specific examples of the decorative sheet for ceiling are the same as those exemplified for the decorative sheet for wall. Due to the easily peelable and re-attachable properties of the pressure-sensitive adhesive sheet of the present invention, not only can the workability at the time of building the house be improved, but also the interior redressing work by the resident himself after the building of the house, that is, a simple reform Can be easily constructed. In particular, the installation on the ceiling is difficult if ordinary wallpaper is used, but the installation is simple because there is no need to use water glue as in the case of conventional wallpaper.
  • the decorative sheet for ceiling is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) due to the numerous fine concave shapes 13a, it can be easily peeled off, there is no adhesive residue, and the adherend is not adhered. Can be easily restored to the state before the ceiling decorative sheet was attached.
  • the pressure-sensitive adhesive sheet of the present invention can be applied as a decorative sheet for fittings.
  • the ease of peeling and re-attachability of the pressure-sensitive adhesive sheet of the present invention not only can enhance the workability during the manufacturing of the fittings, but also the work of the resident himself after the construction of the house in the work of redressing the appearance of the fittings. It can also enhance the character. Since this decorative sheet for fittings is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) of the numerous fine concave shapes 13a, it can be easily peeled off, there is no adhesive residue, and the adherend is damaged.
  • fittings to which the decorative sheet for fittings are to be pasted include handrails, window frames (sashes), doors, door frames, brans, construction members (surrounding edges, Kamoi, waist walls, sills), and the like. , Or any other type.
  • the pressure-sensitive adhesive sheet of the present invention can be applied as a decorative sheet for furniture.
  • the ease of peeling and re-attachment of the pressure-sensitive adhesive sheet of the present invention not only can improve the workability during furniture manufacturing, but also can improve the workability of the work of refinishing the appearance of the furniture by the user himself after purchasing the furniture. Can also be increased. Since the decorative sheet for furniture is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) of the numerous fine concave shapes 13a, it can be easily peeled off, there is no adhesive residue, and the adherend is damaged. Can be easily restored to the state before the decorative sheet for furniture was attached.
  • furniture to which the decorative sheet for furniture is to be pasted for example, tables such as desks and dining tables, chests of drawers, shelves, beds and the like can be exemplified, but any other items may be used.
  • the pressure-sensitive adhesive sheet of the present invention is not limited to use as various decorative sheets in a house as described above, and may be used as an exterior sheet mainly used outdoors.
  • the ease of peeling and the re-attachment property of the pressure-sensitive adhesive sheet of the present invention can enhance the workability of the temporary re-dressing work of the exterior. Since this exterior sheet is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) of the numerous fine concave shapes 13a, it can be easily peeled off, there is no adhesive residue, and the adherend is damaged. Since it can be prevented, it is also possible to easily restore the state before the exterior sheet is attached.
  • the object to which the exterior sheet is to be attached may be, for example, an object related to a house such as an entrance door, various exteriors, windows, window frames, outer walls, or a moving object such as a vehicle. It may be something.
  • the pressure-sensitive adhesive sheet of the present invention is not limited to interior and exterior use, and may be used as a window sheet to be attached to a window.
  • the window sheet may be not only a decorative sheet mainly having a design property but also a functional sheet having various functions.
  • the functional sheet for example, may have the function of an optical filter that absorbs or reflects light in a specific wavelength range such as infrared light and ultraviolet light, may have an antifouling function, and may have a known function. It can be provided as appropriate.
  • a decorative sheet provided with a decoration such as a stained glass pattern or a quad glass pattern may be used.
  • the pressure-sensitive adhesive sheet of the present invention may be applied to labels, seals, and patches.
  • Various packaging containers especially containers such as PET bottles and glass bottles, are required to be easily separated from the label and the container at the time of disposal or waste collection / recycling. it can.
  • the pressure-sensitive adhesive sheet of the present invention may be applied to a writing surface forming sheet capable of simply providing a function of a whiteboard (white board) or a blackboard by sticking. As a result, various wall surfaces can be used as a whiteboard surface or the like, and the original state can be easily restored.
  • the pressure-sensitive adhesive sheet of the present invention can be used for posters and various advertisement displays. Thus, an advertisement or the like can be displayed on any wall surface, and the original state can be easily restored without adhesive residue on the adherend.
  • the pressure-sensitive adhesive sheet of the present invention can be used for a sun visor film or an anti-fog film that is attached to a window of a building or various vehicles to adjust the amount of transmitted light. As a result, the user can not only provide a sun visor or anti-fog function according to his / her preference, but also easily return to the original state.
  • the adhesive sheet of the present invention can be used for menus, price tags, bar codes, and the like. It is suitable for use such as changing the menu every month or temporarily changing the price tag or barcode.
  • the pressure-sensitive adhesive sheet of the present invention can be used for flaps (covers) of envelopes and boxes. As a result, the envelope can be easily sealed and can be opened and closed freely.
  • the pressure-sensitive adhesive sheet of the present invention may be used on the whole or a part of the tag. Since the pressure-sensitive adhesive sheet of the present invention can easily perform the formation of the adhesive force, it is possible to easily realize a stickable sticky note having the adhesive force according to the application. Further, the pressure-sensitive adhesive sheet of the present invention may be used for a destination display plate, a name tag, or the like as a usage pattern similar to a tag.
  • the pressure-sensitive adhesive sheet of the present invention is used for various functional sheets that exhibit various functions such as anti-reflection, electromagnetic wave shielding, optical filters, expansion or restriction of a viewing angle, and antistatic which are attached to the display surface of various display devices. Can be.
  • the various functional sheets may be attached at the time of manufacturing the display device at a factory or the like, or may be separately purchased and attached by a user of the display device.
  • the pressure-sensitive adhesive sheet of the present invention may be used as a curing tape or a masking tape used in various processes such as painting.
  • the pressure-sensitive adhesive sheet of the present invention may be used for a hook-and-loop fastener sheet, a hook-and-loop fastener tape, etc. used as a hook-and-loop fastener.
  • the pressure-sensitive adhesive sheet of the present invention may be used as a bandage stopper as a use form close to a hook-and-loop fastener.
  • the pressure-sensitive adhesive sheet of the present invention may be used for a sheet-shaped vehicle-mounted antenna, a vehicle-mounted sensor, or the like.
  • the adhesive sheet of the present invention may be used for forms such as delivery slips. Thus, for example, after the delivery is completed, the form can be peeled off and the delivery box can be reused.
  • the pressure-sensitive adhesive sheet of the present invention may be used for hanging objects requiring slip prevention, such as tablecloths and tiles. Since the pressure-sensitive adhesive sheet of the present invention is adsorbed (adhered) to the adherend by the adsorbing force (adhesive force) of the fine concave shape 13a, it can exhibit a sufficient anti-slip effect.
  • the pressure-sensitive adhesive sheet of the present invention is not limited to the use form in which the first sheet remains after pasting, as in the decorative sheet described above, but the form in which only the pressure-sensitive adhesive layer finally remains on the adherend, that is, a double-sided (pressure-sensitive) tape May be used.
  • a double-sided (pressure-sensitive) tape May be used.
  • both the first sheet and the second sheet disposed so as to sandwich the adhesive layer are formed of a peelable base sheet.
  • the decorative sheet (adhesive sheet) 1 of the present embodiment a plurality of concave shapes based on bubbles are formed on both surfaces of the adhesive layer 13. Accordingly, a decorative sheet in the form of a pressure-sensitive adhesive sheet can be obtained without heating the surface layer sheet, and can be easily manufactured without damaging the surface layer sheet.
  • the adhesive force of the adhesive layer 13 is based on the suction force of the concave shape 13a, the reworking property is high, and even if the attachment fails, it is easy to re-stretch and easy to use.
  • the concave shape 13a has a fine size and is provided in a large number, even if there is some unevenness on the surface of the adherend, it can exert an adhesive force (adsorbing force). Furthermore, since the phenomenon such as adhesive residue does not occur on the surface of the adherend after the decorative sheet 1 has been peeled off, it is not necessary to clean, and it can be re-applied as it is, thus improving workability. Good. Moreover, since the decorative sheet (pressure-sensitive adhesive sheet) 1 of the present embodiment can form the pressure-sensitive adhesive layer 13 without heating, the pressure-sensitive adhesive sheet can be formed by using various forms of the surface layer sheet, including the surface layer weak to heat. Can be configured.
  • the description of the pressure-sensitive adhesive sheet has been given by giving an example of a decorative sheet provided with a resin layer.
  • the present invention is not limited to this. .
  • the configuration of the surface layer sheet has been described by using an example in which the configuration includes the base material and the resin layer.
  • the present invention is not limited to this.
  • the surface sheet may be a single layer, or may have a more complicated configuration of three or more layers.
  • the material of the surface layer sheet may be made of paper, a thermoplastic resin, or the like, in addition to the examples given in the embodiments.

Abstract

L'invention concerne une feuille adhésive pouvant être réutilisée. La feuille adhésive (1) selon l'invention comprend : un matériau de base (11) et une couche de résine (12) qui servent de feuille de surface formant une surface côté face après apposition ; une couche adhésive (13) couchée sur la surface côté pile associée ; et une feuille de matériau de base pelable (14) couchée sur le côté de la couche adhésive (13) opposée au matériau de base (11) et à la couche de résine (12), la couche adhésive (13) étant pourvue d'une pluralité d'évidements (13a) dans les deux surfaces correspondantes. Les évidements (13a) assurent une fonction de fixation, ce qui permet de produire une force adhésive par rapport à un objet à coller et de conférer un caractère réutilisable.
PCT/JP2019/036990 2018-03-01 2019-09-20 Feuille adhésive WO2020059855A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018036975 2018-03-01
JP2018-175617 2018-09-20
JP2018175617A JP6553792B1 (ja) 2018-03-01 2018-09-20 粘着シート

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WO2020059855A1 true WO2020059855A1 (fr) 2020-03-26

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JP (3) JP6553792B1 (fr)
WO (1) WO2020059855A1 (fr)

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WO2020022497A1 (fr) * 2018-07-26 2020-01-30 大日本印刷株式会社 Feuille de papier peint
WO2020026989A1 (fr) * 2018-07-31 2020-02-06 大日本印刷株式会社 Feuille cosmétique
JP6900972B2 (ja) * 2018-07-31 2021-07-14 大日本印刷株式会社 シート状の粘着層、積層体およびそれらの製造方法
JP7259606B2 (ja) * 2019-07-16 2023-04-18 大日本印刷株式会社 床材、床用材の施工方法、床構造
JP7388033B2 (ja) * 2019-07-30 2023-11-29 大日本印刷株式会社 包装袋
JP7388034B2 (ja) * 2019-07-30 2023-11-29 大日本印刷株式会社 包装袋
JP7437685B2 (ja) 2020-04-15 2024-02-26 住江織物株式会社 車両用床表示フィルム

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JPH0253792B2 (fr) * 1980-07-22 1990-11-19 Canon Kk
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JP2002338905A (ja) * 2001-05-11 2002-11-27 Oji Paper Co Ltd 記録用粘着シート
JP2002348548A (ja) * 2001-05-25 2002-12-04 Katsuhiko Kuwahata ミクロ吸盤粘着剤付き広告ポスターシートの製造方法
JP2011241358A (ja) * 2010-05-21 2011-12-01 Bridgestone Corp 粘着剤層、粘着シート及び表装用シート
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JP6747540B2 (ja) 2020-08-26
JP2019151845A (ja) 2019-09-12
JP6553792B1 (ja) 2019-07-31
JP2019151816A (ja) 2019-09-12
JP6747539B2 (ja) 2020-08-26

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