JP2015030187A - Decorative laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative laminated sheet which has excellent handleability in applications on adherends, including metal-made walls of e.g. elevators and vehicles of trains and metal-made household furniture, e.g. disks and bookshelves, and excellent adsorptivity to adherends.SOLUTION: A decorative laminated sheet includes a decorative sheet 10 having a design surface 11 designed and a back surface 12 opposite to the design sheet 11, a magnetic layer 20 which is provided in a part of the back surface 12 and composed of a material containing a magnetic material and a support layer 30 which is provided in a region different from the region in which the magnetic layer 20 of the back surface 12 is provided and supports the decorative sheet 10. The specific gravity of the material constituting the support layer 30 is smaller than that of the material constituting the magnetic layer 20.

Description

  The present invention relates to a decorative board.

  For example, it is possible to give aesthetics to the wall surface by attaching a decorative panel with a wood grain pattern to a metal wall surface such as an elevator or a train vehicle, a metal wall surface in a home or office, etc. it can. Such decorative plates are also used for metal furniture such as desks and bookshelves.

  As a decorative plate to be attached to an adherend such as a metal wall surface, a magnetic sheet for display in which a magnetic sheet is attached to the back surface of a printed sheet has been proposed (for example, see Patent Document 1). By using a decorative board having such a magnetic sheet, the design of the adherend can be easily changed.

  Moreover, a decorative board is often affixed to places with a relatively large area, such as an inner wall surface of a building. Therefore, if you try to prepare a large-sized decorative board that can handle such a large area, the larger area will increase the weight of the decorative board, and the decorative board will be attached, removed, and carried. There has been a problem that handling properties such as the above become worse.

  In order to solve this, it is conceivable to reduce the thickness of the magnetic sheet. However, if the thickness of the magnetic sheet is reduced, there is a problem that the adsorptivity to the adherend is lowered. In addition, when such a decorative sheet with a thin magnetic sheet is to be attached to an adherend to which wallpaper or the like is attached, for example, the wallpaper intervenes to further adsorb the adherend. Decreases, and it is difficult to reliably adsorb the decorative plate to the adherend. On the other hand, if the thickness of the magnetic sheet is increased in order to improve the adsorptivity to the adherend, the weight of the entire decorative sheet becomes heavy, and it becomes difficult to apply the decorative sheet to a portion having a large area.

JP 2007-261259 A

  The object of the present invention is, for example, excellent in handleability to adherends such as metal wall surfaces such as elevators and train vehicles, and metal furniture such as desks and bookshelves, and excellent in adsorbability to adherends. Is to provide a decorative veneer.

Such an object is achieved by the present inventions (1) to (8) below.
(1) a decorative sheet having a design surface on which a design is applied and a back surface opposite to the design surface;
A magnetic layer provided on a part of the back surface and made of a material containing a magnetic material;
Provided in a region different from the region where the magnetic layer is provided on the back surface, and a support layer for supporting the decorative sheet,
The decorative board is characterized in that the specific gravity of the material constituting the support layer is smaller than the specific gravity of the material constituting the magnetic layer.

  (2) The decorative board according to (1), wherein the specific gravity of the material constituting the support layer is 1% or more and 40% or less of the specific gravity of the material constituting the magnetic layer.

  (3) The decorative board according to (1) or (2), wherein the material constituting the support layer has a specific gravity of 0.1 to 2.5.

  (4) The decorative board according to any one of (1) to (3), wherein the area occupation ratio of the magnetic layer on the back surface is 10% or more and 50% or less when the back surface is viewed in plan.

  (5) Said (1) thru | or (4) the surface on the opposite side to the said decorative sheet of the said support layer and the surface on the opposite side to the said decorative sheet of the said magnetic layer are located on the same plane. A decorative board according to any one of the above.

  (6) The decorative board according to any one of (1) to (5), wherein the magnetic layer has an average thickness of 0.6 mm to 3.0 mm.

  (7) The said magnetic layer is a decorative board in any one of said (1) thru | or (6) provided along the outer edge part of the said back surface.

  (8) The decorative board according to any one of (1) to (7), wherein the support layer is made of any one of a resin material and a rubber material.

  According to the present invention, for example, it is excellent in handleability to adherends such as metal wall surfaces such as elevators and train vehicles, and metal furniture such as desks and bookshelves, and also excellent in adsorbability to adherends. Is to provide a decorative veneer.

It is a top view (back view) which shows embodiment of the decorative board of this invention. It is the sectional view on the AA line in FIG. It is a top view (back view) which shows the other example of the decorative board of this invention.

  Hereinafter, the decorative board of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

《Veneerboard》
FIG. 1 is a plan view (back view) showing an embodiment of a decorative board of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. In the following description, the upper side in FIGS. 1 and 2 is referred to as “upper”, the lower side is referred to as “lower”, the left side is referred to as “left”, and the right side is referred to as “right”. In addition, the drawings referred to in this specification show part of the configuration in an exaggerated manner, and do not accurately reflect actual dimensions and the like.

  The decorative board 100 shown in FIGS. 1 and 2 is an adherend such as a metal wall such as an elevator or a train vehicle, a metal wall in a home or office, or a metal furniture such as a desk or a bookshelf. It is used for imparting aesthetics to the adherend by sticking to the substrate.

  As shown in FIG. 1, the decorative board 100 is a sheet whose shape in a plan view is a rectangle (quadrangle).

  As shown in FIG. 2, the decorative board 100 includes a decorative sheet 10, an adhesive layer 40 provided on the lower side of the decorative sheet 10, and a decorative sheet 10 on the lower side of the adhesive layer 40, that is, the adhesive layer 40. It is comprised with the magnetic layer 20 and the support layer 30 which were provided in the opposite side.

  The decorative sheet 10 is bonded to the magnetic layer 20 and the support layer 30 via the pressure-sensitive adhesive layer 40.

  In addition, when the decorative plate 100 is attached to the adherend, the decorative sheet 10 is positioned on the side where it is visually recognized, and the magnetic layer 20 and the support layer 30 are positioned on the adherend side. Hereinafter, the surface of the decorative plate 100 that is visually recognized, that is, the upper surface of the decorative sheet 10 is defined as the surface of the decorative plate 100, and the surface that faces the adherend of the decorative plate 100, that is, the lower surfaces of the magnetic layer 20 and the support layer 30. The back surface of the decorative board 100 is used.

Each configuration will be described below.
<Coating sheet>
The decorative sheet 10 is a member that imparts design and aesthetics to the decorative plate 100.

  As shown in FIG. 1, the decorative sheet 10 has a rectangular shape in plan view. Further, as shown in FIG. 2, the decorative sheet 10 includes a design surface 11 on which a pattern, a color, and the like are applied, and a back surface 12 opposite to the design surface 11. The design surface 11 corresponds to the surface of the decorative board 100. Further, the back surface 12 is in contact with the pressure-sensitive adhesive layer 40.

  The decorative sheet 10 is not particularly limited, for example, various metal sheets (including metal foils and metal plates), various resin sheets (including resin plates), various cloths, various papers, various wooden boards, plaster boards, etc. These composites, laminates and the like can be mentioned.

  As a constituent material of various metal sheets, aluminum, iron, nickel, copper, magnesium, zinc etc. are mentioned, for example, Among these, it can use 1 type or in combination of 2 or more types.

  In addition, the metal sheet may be a sheet-like base material made of a material other than a metal material and the like plated with the metal material.

  The constituent materials of various resins include phenolic resin, epoxy resin, melamine resin, diallyl phthalate resin, urea resin, unsaturated polyester resin, alkyd resin, polyurethane, thermosetting polyimide, thermosetting resin, acrylic resin, polycarbonate, Examples thereof include thermoplastic resins such as polyethylene, polypropylene, polystyrene, polyvinyl acetate, polyolefin, and polyvinyl chloride, and one or more of these can be used in combination.

  Examples of the various papers include kraft paper, cotton linter paper, paper base materials mainly composed of linter and kraft pulp mixed paper, and the like. Moreover, these paper base materials may be used alone as the decorative sheet 10, resin impregnated paper obtained by impregnating these paper base materials with resin, titanium oxide-containing paper containing a pigment such as titanium oxide, or the like. The decorative sheet 10 may be used.

  As various kinds of cloth, a woven cloth or a non-woven cloth obtained by collecting a large number of fibers and processing them into a thin plate shape can be used.

  The fibers are not particularly limited, and examples thereof include inorganic fibers such as alumina fibers, silica fibers, and glass fibers, and chemically synthetic fibers such as cellulose fibers, polyolefin fibers, polyester fibers, and aramid fibers.

  Moreover, as various cloth, what made resin, a pigment, etc. contain in a woven fabric, a nonwoven fabric, etc. may be sufficient.

  The average thickness of the decorative sheet 10 is not particularly limited, but is preferably 0.01 mm or more and 0.5 mm or less, and more preferably 0.05 mm or more and 0.4 mm or less. If the thickness is less than the lower limit value, the decorative sheet 10 may be cracked or chipped, making it difficult to use. If the thickness exceeds the upper limit value, the curved surface workability of the decorative board 100 may be reduced.

<Magnetic layer>
As shown in FIGS. 1 and 2, the magnetic layer 20 is provided on the lower side of the decorative sheet 10, and is bonded to a part of the back surface 12 via the adhesive layer 40.

  The magnetic layer 20 has an upper surface 21 located on the decorative sheet 10 side and a lower surface 22 opposite to the upper surface 21. The upper surface 21 is in contact with the pressure-sensitive adhesive layer 40.

  The magnetic layer 20 is magnetized and has a function of adsorbing (adhering) to an adherend composed of metal or the like. For this reason, when installing the decorative plate 100 on the adherend, the decorative plate 100 can be attached to the adherend by disposing the lower surface 22 so as to face the adherend.

  As shown in FIG. 1, the magnetic layer 20 has two first portions 201, two second portions 202, and two third portions 203. The two first portions 201 are provided along the pair of long sides 101 of the decorative sheet 10, respectively. The two second portions 202 are provided along the pair of short sides 102 of the decorative sheet 10, respectively. Each of the two third parts 203 is constructed between the two first parts 201. Moreover, the 2nd site | part 202 and the 3rd site | part 203 are each installed at equal intervals.

  Further, the width L1 of the first part 201, the width L2 of the second part 202, and the width L3 of the third part 203 may be the same length or different lengths. . For example, the widths L1, L2, and L3 can be appropriately set according to the ratio (area occupancy) of the magnetic layer 20 on the back surface 12.

  Thus, the first part 201 and the second part 202 are provided along the outer edge portion of the back surface 12. Thereby, when the decorative board 100 is affixed to a to-be-adhered body, the sticking defect with respect to the to-be-adhered body of the edge of the decorative sheet 10 can be prevented, and generation | occurrence | production of the bending in the decorative board 100 is suppressed or prevented. can do.

  In addition, since the magnetic layer 20 has the third portion 203, the decorative plate 100 can be reliably attached to the adherend, and the effect that the deflection occurs in the central portion of the decorative plate 100 is further effective. Can be prevented. Thus, the magnetic layer 20 is preferably provided along the edge portion of the back surface 12 and provided in a portion other than the edge portion. Thereby, even if the area of the decorative board 100 is relatively large, the entire decorative board 100 can be more reliably attached to the adherend, and further, the decorative board 100 will bend. Can be surely prevented.

  Moreover, when the back surface 12 of the decorative sheet 10 is viewed in plan, the area occupation ratio of the magnetic layer 20 on the back surface 12 of the decorative sheet 10 is preferably 10% or more and 50% or less, and 15% or more and 45% or less. More preferably, it is 20% or more and 40% or less. As a result, the decorative plate 100 can be reliably attached to the adherend, and further weight reduction of the decorative plate 100 as a whole can be achieved. Further, if the area occupancy ratio of the magnetic layer 20 is within the above range, the adherend may be a decorative object even if paper, a resin sheet or the like is attached to the surface of the metal adherend. The board 100 can be more reliably adhered to the adherend, and the decorative board 100 can be prevented from being unintentionally peeled off from the adherend.

The constituent material of the magnetic layer 20 is not particularly limited, and examples thereof include those obtained by binding magnet powder with a binder (binding resin).
As magnet powder, what has the outstanding magnetic characteristic is preferable.

  Examples of such magnet powder include alloys containing R (where R is at least one of rare earth elements including Y), particularly R (where R is at least one of rare earth elements including Y). 1 type) and TM (wherein TM is at least one of transition metals) and B (boron) are included.

  In particular, (1) a rare earth element mainly composed of Sm and a transition metal mainly composed of Co (hereinafter referred to as Sm—Co alloy), (2) R (where R is At least one of rare earth elements including Y), a transition metal (TM) mainly composed of Fe, and B (hereinafter referred to as R-TM-B alloy), (3 (1) Rare earth elements mainly composed of Sm, transition metals mainly composed of Fe, and interstitial elements mainly composed of N (hereinafter referred to as Sm—Fe—N alloys), (4) ) R (where R is at least one of rare earth elements including Y) and a transition metal such as Fe, and has a composite structure in which a soft magnetic phase and a hard magnetic phase are adjacent to each other Those are preferred.

Typical examples of the Sm—Co alloy include SmCo ₅ and Sm ₂ TM ₁₇ (where TM is a transition metal).

  Typical examples of R-Fe-B alloys include, for example, Nd-Fe-B alloys, Pr-Fe-B alloys, Nd-Pr-Fe-B alloys, and Nd-Dy-Fe-B. Alloy, Ce—Nd—Fe—B alloy, Ce—Pr—Nd—Fe—B alloy, and those obtained by substituting a part of Fe with other transition metals such as Co and Ni.

As a typical Sm—Fe—N based alloy, for example, Sm ₂ Fe ₁₇ N ₃ produced by nitriding an Sm ₂ Fe ₁₇ alloy, Sm—Zr—Fe— having a TbCu ₇ type phase as a main phase is used. Examples include Co—N alloys.

  Examples of rare earth elements include Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Misch metal, one or two of these. The above can be included. Moreover, as a transition metal, Fe, Co, Ni etc. are mentioned, These can be included 1 type or 2 types or more.

  Moreover, in order to improve heat resistance and corrosion resistance, in the magnet powder, if necessary, Al, Cu, Ga, Si, Ti, V, Ta, Zr, Nb, Mo, Hf, Ag, Zn, P, Ge etc. can also be contained.

  A composite structure (nanocomposite structure) has a soft magnetic phase and a hard magnetic phase, and the thickness and particle size of each phase are present at a nanometer level (for example, 1 to 100 nm). And a soft magnetic phase and a hard magnetic phase adjoin each other, and a magnetic exchange interaction arises.

In the R-TM-B alloy described above, examples of the hard magnetic phase and the soft magnetic phase include a hard magnetic phase: R ₂ TM ₁₄ B system (TM is Fe or Fe and Co), or R ₂ TM ₁₄ BQ. System (Q is at least one of Al, Cu, Ga, Si, Ti, V, Ta, Zr, Nb, Mo, Hf, Ag, Zn, P, Ge, etc.), soft magnetic phase: TM (particularly α-Fe, α- (Fe, Co)), an alloy phase of TM and Q, or the like can be given.

As the binder, either a thermoplastic resin or a thermosetting resin may be used.
Examples of the thermoplastic resin include polyamide (eg, nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6-66, nylon 6T, nylon 9T), Liquid crystalline polymers such as thermoplastic polyimide and aromatic polyester, polyphenylene oxide, polyphenylene sulfide, polyolefin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, modified polyolefin, polycarbonate, polymethyl methacrylate, polyethylene terephthalate, polybutylene terephthalate, etc. Polyester, polyether, polyetheretherketone, polyetherimide, polyacetal, etc., or copolymers, blends and polymers based on these Roy and the like, can be used as a mixture of two or more of them.

  Among these, since the moldability is particularly excellent and the mechanical strength is high, those mainly composed of polyamide and polyphenylene sulfide are preferable from the viewpoint of improving heat resistance. Moreover, these thermoplastic resins are also excellent in kneadability with magnet powder.

  Such thermoplastic resins have the advantage that they can be selected over a wide range, for example, those that emphasize moldability, those that emphasize heat resistance, and mechanical strength, depending on the type, copolymerization, and the like. is there.

  On the other hand, as the thermosetting resin, for example, various epoxy resins such as bisphenol type, novolac type, naphthalene type, phenol resin, urea resin, melamine resin, polyester (unsaturated polyester) resin, polyimide resin, silicone resin, polyurethane resin Etc., and one or more of these can be used in combination.

  Among these, an epoxy resin, a phenol resin, a polyimide resin, and a silicone resin are preferable, and an epoxy resin is particularly preferable because the moldability is particularly excellent, the mechanical strength is high, and the heat resistance is excellent. In addition, these thermosetting resins are excellent in kneadability with magnet powder and uniformity of kneading.

  The thermosetting resin (uncured) used may be liquid at room temperature or solid (powdered).

  The average thickness of the magnetic layer 20 is preferably 0.6 mm or more and 3.0 mm or less, and more preferably 0.8 mm or more and 2.5 mm or less. When the average thickness is less than the lower limit value, depending on the constituent material of the magnetic layer 20, the overall size of the decorative plate 100, etc., in order to improve the adsorptivity of the decorative plate 100 to the adherend, the plan view It may be necessary to make the area occupation ratio of the magnetic layer 20 on the back surface 12 relatively high. Further, when the average thickness exceeds the upper limit, the thickness of the magnetic layer 20 is increased, so that the side surface of the magnetic layer 20 is easily visible when the decorative plate 100 is attached to the adherend, Aesthetics may be reduced.

  Further, examples of the method for forming the magnetic layer 20 into a planar shape as shown in FIG. 1 include punching and cutting. In addition, the first part 201, the second part 202, and the third part 203 are separately prepared, and these are adhered to the back surface 12 of the decorative sheet 10 via the adhesive layer 40, respectively. The magnetic layer 20 may have a planar shape as shown.

<Support layer>
As shown in FIGS. 1 and 2, the support layer 30 is provided on the lower side of the decorative sheet 10, and is bonded to a part of the back surface 12 through the adhesive layer 40.

  The support layer 30 has an upper surface 31 located on the decorative sheet 10 side and a lower surface 32 opposite to the upper surface 31. The upper surface 31 is in contact with the pressure-sensitive adhesive layer 40.

  As shown in FIGS. 1 and 2, the support layer 30 is provided on a portion of the back surface 12 where the magnetic layer 20 is not provided. That is, the support layer 30 is provided in a region different from the region where the magnetic layer 20 of the back surface 12 is provided. As described above, the support layer 30 supplements the portion of the back surface 12 where the magnetic layer 20 is not provided, and supports the decorative sheet 10.

  As shown in FIG. 2, the thickness of the magnetic layer 20 and the thickness of the support layer 30 are substantially the same. That is, the lower surface 22 of the magnetic layer 20 and the lower surface 32 of the support layer 30 are located on the same plane. Thereby, when the decorative board 100 is affixed on a to-be-adhered body, it can prevent that the distortion etc. arise in the design surface 11 of the decorative sheet 10. FIG.

  In this specification, the fact that the lower surface 22 of the magnetic layer 20 and the lower surface 32 of the support layer 30 are located on the same plane means that the height from the back surface 12 to the lower surface 22 and the lower surface 32 of the decorative sheet 10 is high. It includes not only that the distance (distance) is the same, but also some errors that do not affect the design surface 11 of the decorative sheet 10.

  The support layer 30 is made of a material having a specific gravity smaller than that of the material constituting the magnetic layer 20. By having such a support layer 30, the decorative plate 100 can reduce the weight of the decorative plate 100 as a whole as compared with the case where the entire back surface 12 of the decorative sheet 10 is covered with the magnetic layer 20. . Thus, the support layer 30 contributes to the weight reduction of the decorative board 100. Thereby, handling properties, such as carrying of the decorative board 100, attachment to a to-be-adhered body, and removal from an to-be-adhered body, can be made excellent.

  Further, by providing the support layer 30 made of a material having a specific gravity smaller than that of the material constituting the magnetic layer 20 together with the magnetic layer 20 as described above, the adsorbability to a metal adherend is favorable. In addition, the overall weight of the decorative board 100 can be reduced.

  The specific gravity of the material constituting the support layer 30 may be smaller than the specific gravity of the material constituting the magnetic layer 20, but is preferably 1% to 40% of the specific gravity of the material constituting the magnetic layer 20. It is more preferably 5% or more and 35% or less, and further preferably 2% or more and 30% or less. Thereby, the weight of the decorative board 100 whole can be made light, and the decorative board 100 can be handled with comparatively light force. For this reason, it can carry out more easily that the decorative board 100 is affixed on a to-be-adhered body, or the decorative board 100 affixed on the to-be-adhered body is peeled off.

  Specifically, the specific gravity of the material constituting the support layer 30 is preferably 0.1 or more and 2.5 or less, more preferably 0.12 or more and 1.5 or less, and 0.15 or more. More preferably, it is 1.0 or less. Thereby, while having the function to support the decorative sheet 10, the weight of the decorative board 100 can be further reduced. For this reason, even if it is a case where the decorative board 100 with a comparatively large area is affixed on a to-be-adhered body, since the decorative board 100 can be operated easily, a decorative board is affixed on the arbitrary places of a to-be-adhered body It becomes easy.

  Specific examples of the constituent material of the support layer 30 include resin materials such as thermosetting resins and thermoplastic resins, rubber materials, inorganic materials such as silicon and metals, and composites thereof. Among these, it is preferable to be composed of any one of a resin material and a rubber material. The resin material and the rubber material are easy to process, and it is easy to adjust the film thickness and to perform molding according to the shape of the region of the back surface 12 where the magnetic layer 20 is not provided.

  Examples of the thermosetting resin include an epoxy resin, a phenol resin, a urea resin, a melamine resin, a polyester resin, a polyimide resin, a silicone resin, a polyurethane, and the like. One or more of these may be used in combination. Can do.

  Examples of the thermoplastic resin include polyolefins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer, modified polyolefins, polyamides (eg, nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12). , Nylon 6-12, nylon 6-66), thermoplastic polyimide, aromatic polyester and other liquid crystal polymers, polyphenylene oxide, polyphenylene sulfide, polycarbonate, polymethyl methacrylate, polyether, polyether ether ketone, polyether imide, polyacetal, Styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluoro rubber, salt Various thermoplastic elastomers, etc., or a copolymer of these His polyethylene type or the like, blends, polymer alloys and the like, can be used as a mixture of two or more of them.

  In addition, as a resin material such as the above-described thermoplastic resin and thermoplastic resin, it is also possible to use a resin in which materials having different densities, that is, crystallinity, such as low density polystyrene and high density polystyrene are mixed. Is possible. For example, a foamed resin formed by adding a foaming agent or the like, such as foamed polyethylene or foamed polystyrene, can be used. Since the foamed resin can keep the specific gravity small, it has an advantage that the weight of the support layer 30 can be further reduced.

  Rubber materials include natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, acrylonitrile butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, and fluorine rubber. Such various rubber materials (especially those vulcanized) can be mentioned, and one or two or more of these can be mixed and used.

In addition to the constituent materials of the support layer 30 as described above, for example, various additives such as a plasticizer, a tackifier, a thickener, a filler, an anti-aging agent, an antiseptic, an antifungal agent, a dye, and a pigment. May be blended as necessary.
The support layer 30 may be composed of various papers, various cloths, and the like.

  Further, as described above, the support layer 30 is provided in a region different from the magnetic layer 20 on the back surface 12 of the decorative sheet 10, but the support on the back surface 12 when the back surface 12 of the decorative sheet 10 is viewed in plan view. The area occupation ratio of the layer 30 is preferably 50% or more and 90% or less, more preferably 60% or more and 85% or less, and further preferably 65% or more and 80% or less. Thereby, weight reduction of the decorative board 100 can be achieved more reliably, making the adsorptivity to the metal adherend of the decorative board 100 more satisfactory. For this reason, the decorative board 100 can be affixed more easily with respect to a metal adherend, and it becomes easier to remove by applying a certain amount of external force.

  Moreover, it is preferable that the average thickness of the support layer 30 is 0.6 mm or more and 3.0 mm or less, and it is more preferable that it is 0.8 mm or more and 2.5 mm or less. Thereby, the support layer 30 can make the handleability of the decorative board 100 more excellent, without impairing the function which supports the decorative sheet 10.

<Adhesive layer>
As shown in FIG. 2, the pressure-sensitive adhesive layer 40 is provided between the magnetic layer 20 and the support layer 30 and the decorative sheet 10, and joins the magnetic layer 20 and the support layer 30 to the decorative sheet 10. It has a function.

  The pressure-sensitive adhesive layer 40 is mainly composed of a pressure-sensitive adhesive. Examples of the pressure-sensitive adhesive include a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive.

  Acrylic pressure-sensitive adhesives include a polymer mainly composed of a low Tg main monomer component that provides tackiness, a high Tg comonomer component that provides adhesiveness and cohesion, and a functional group-containing monomer component for crosslinking and adhesion improvement. Or it consists of a copolymer.

  Examples of the main monomer component include ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, alkyl acrylates, butyl methacrylate, methacryl Examples include methacrylic acid alkyl esters such as 2-ethylhexyl acid, cyclohexyl methacrylate, and benzyl methacrylate.

  Examples of the comonomer component include methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, styrene, acrylonitrile and the like.

  Examples of the functional group-containing monomer component include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, maleic acid, and itaconic acid, 2-hydroxyethyl (meth) acrylate, and 2-hydroxypropyl (meth) acrylate. And hydroxyl group-containing monomers such as N-methylolacrylamide, acrylamide, methacrylamide, glycidyl methacrylate and the like.

  Examples of rubber-based adhesives include natural rubber-based, isoprene rubber-based, styrene-butadiene-based, recycled rubber-based, and polyisobutylene-based rubbers, and rubbers such as styrene-isoprene-styrene and styrene-butadiene-styrene. Examples thereof include those mainly comprising a block copolymer.

  Examples of the silicone-based pressure-sensitive adhesive include dimethylsiloxane-based and diphenylsiloxane-based adhesives.

  As the above-mentioned pressure-sensitive adhesive, either a non-crosslinked type or a crosslinked type can be used. In the latter case, a crosslinking agent can be added as necessary. Examples of the crosslinking agent include epoxy compounds, isocyanate compounds, metal chelate compounds, metal alkoxides, metal salts, amine compounds, hydrazine compounds, aldehyde compounds, and the like.

Such an adhesive may be either an organic solvent type or an emulsion type.
In addition, various additives such as a plasticizer, a tackifier, a thickener, a filler, an antiaging agent, an antiseptic, an antifungal agent, a dye, and a pigment are added to the adhesive layer 40 as necessary. It may be.

  Moreover, although the average thickness of the adhesive layer 40 is not specifically limited, It is preferable that they are 0.01 mm or more and 5.0 mm or less, and it is more preferable that they are 0.05 mm or more and 3.0 mm or less. Thereby, while being able to join the magnetic layer 20, the support layer 30, and the decorative sheet 10 more reliably, the aesthetics of the decorative board 100 can be improved further.

  Moreover, the adhesive layer 40 may be comprised only by 1 layer, and may be comprised by 2 or more layers. For example, it may have a two-layer structure composed of pressure-sensitive adhesives having different adhesive forces, or may have a three-layer structure in which a pressure-sensitive adhesive is applied to both surfaces of the substrate.

  The base material is not particularly limited, for example, glass fiber base materials such as glass cloth and glass paper, woven fabrics and non-woven fabrics made of synthetic fibers, metal fibers, carbon fibers, woven fabrics made of mineral fibers, non-woven fabrics, Resin film etc. are mentioned.

  Further, the pressure-sensitive adhesive layer 40 may be formed on the decorative sheet 10 by coating, or a double-sided pressure-sensitive adhesive sheet that has been applied and dried in advance may be attached. Known methods can be used as the coating method and the attaching method.

  The decorative plate 100 configured as described above has a flexible sheet-like shape as a whole because the members constituting the decorative plate 100 are configured as described above. For this reason, the decorative board 100 can be easily deformed according to the shape of the adherend and the like. Therefore, not only the adherend having a flat surface but also the adherend having a curved surface such as a cylinder, the decorative plate 100 can be attached so as to follow the curved surface.

Further, the weight per unit area of the decorative board 100 is preferably 0.1 kg / m ² or more and 3.5 kg / m ² or less, and 0.5 kg / m ² or more and 3.0 kg / m ² or less. Is more preferably 0.7 kg / m ² or more and 2.5 kg / m ² or less. As a result, the decorative board 100 is particularly excellent in handleability and more excellent in aesthetics when attached to an adherend.

  Moreover, it is preferable that the maximum thickness of the decorative board 100 is 0.5 mm or more and 5.0 mm or less, and it is more preferable that it is 0.7 mm or more and 4.0 mm or less. Thereby, while being excellent in handleability as mentioned above, the effect that it has the outstanding aesthetics is exhibited more notably.

Moreover, the area in plan view of the decorative board 100 is not particularly limited, but is preferably about 0.01 m ² or more and 5 m ² or less, for example. As described above, the decorative plate 100 can be used for various objects such as a relatively small adherend such as furniture and a relatively large adherend such as an office wall. The area of the decorative plate 100 in plan view is not limited to the above range, and may be set as appropriate according to the purpose and application of the decorative plate 100.

  As mentioned above, although the decorative board of this invention was demonstrated about embodiment of illustration, for example, the decorative board of this invention is not limited to this, Each part which comprises a decorative board can exhibit the same function. Any configuration can be substituted.

  Moreover, although the decorative board was demonstrated as what comprised the decorative sheet, the adhesive layer, the magnetic layer, and the support layer in the said embodiment, it is not limited to this, You may have another layer. For example, a shielding layer for shielding the color tone of the magnetic layer or the support layer may be provided between the pressure-sensitive adhesive layer and the decorative sheet so that the color tone of the magnetic layer or the support layer does not impair the design properties of the decorative sheet. .

  In the embodiment, the decorative sheet has a uniform thickness as a whole. However, the present invention is not limited to this, and the decorative sheet may partially have a different thickness. The same applies to the pressure-sensitive adhesive layer, the magnetic layer, and the support layer.

  Moreover, although the planar view shape of the decorative board and the decorative sheet is a quadrangular shape in the embodiment, the planar view shapes of the decorative board and the decorative sheet are not limited to this. For example, the planar shape of the decorative plate and the decorative sheet may be a circular shape, a polygonal shape other than a rectangular shape, or the like.

  Moreover, in the said embodiment, although the magnetic layer was comprised by the 1st site | part, the 2nd site | part, and the 3rd site | part, the structure of a magnetic layer is not limited to this.

  For example, as illustrated in FIG. 3A, the magnetic layer 20 may not include the third portion 203 and may be configured by the first portion 201 and the second portion 202. Further, as shown in FIG. 3B, the magnetic layer 20 may have the third portion 203 provided along the diagonal line of the back surface 12. Further, as shown in FIG. 3C, the magnetic layer 20 is provided between the second part 202 in addition to the first part 201, the second part 202, and the third part 203. You may have the 4th site | part 204. FIG. Further, as shown in FIG. 3D, the first part 201 may not be provided, and the second part 202 and the third part 203 may be configured.

  Note that the configuration shown in FIG. 3 is an example, and any configuration can be used depending on the purpose and application.

  Hereinafter, although the present invention is explained in detail based on each example and each comparative example, the present invention is not limited to this.

[1] Manufacture of decorative board (Example 1)
First, as a decorative sheet, a vinyl chloride sheet with a pressure-sensitive adhesive having a long side of 2 m and a short side of 1 m with a wood grain on the design surface (Product name: Dynoc Film PS-503, manufactured by Sumitomo 3M, average thickness) 0.2 mm) was prepared.

  Next, a rectangular magnet sheet (manufactured by Magex, average thickness 1.0 mm, isotropic, specific gravity 3.7) having a long side: 2 m and a short side: 1 m was prepared.

  Next, by punching, a magnetic layer (magnet sheet) having a plan view shape as shown in FIG. 1 was produced. The width of the first part, the width of the second part, and the width of the third part constituting the magnetic layer were the same.

  Next, a magnetic layer (magnet sheet) having a plan view shape as shown in FIG. 1 was adhered to the back surface of the decorative sheet through a pressure-sensitive adhesive layer formed in advance.

  Next, a urethane rubber sheet (product name: type lens sheet, manufactured by Tigers Polymer Co., Ltd., average thickness 1.0 mm, specific gravity 1.2) is prepared, and this is a region where the magnetic layer on the back side of the decorative sheet is not provided. A support layer was formed by adhering to each other via an adhesive layer.

  Thereby, a decorative board was obtained. The obtained decorative board had an area occupancy of the magnetic layer on the back surface of 20% and a surface occupancy of the support layer of 80% when the back surface of the decorative sheet was viewed in plan.

(Examples 2 to 10)
A decorative board was obtained in the same manner as in Example 1 except that the configuration of each member included in the decorative board was shown in Table 1.

(Example 11)
A decorative plate was obtained in the same manner as in Example 1 except that the shape of the magnetic layer in plan view was as shown in FIG. 3A and the configuration of each member included in the decorative plate was as shown in Table 1. .

(Example 12)
A decorative plate was obtained in the same manner as in Example 1 except that the shape of the magnetic layer in plan view was as shown in FIG. 3B and the configuration of each member included in the decorative plate was as shown in Table 1. .

(Example 13)
A decorative plate was obtained in the same manner as in Example 1 except that the shape of the magnetic layer in plan view was as shown in FIG. 3 (c) and the configuration of each member included in the decorative plate was as shown in Table 1. .

(Example 14)
A decorative plate was obtained in the same manner as in Example 1 except that the shape of the magnetic layer in plan view was as shown in FIG. 3 (d) and the configuration of each member included in the decorative plate was as shown in Table 1. .

(Comparative Examples 1-3)
A decorative plate was obtained in the same manner as in Example 1 except that a magnetic layer was provided so as to cover the entire back surface of the decorative sheet, and the configuration of each member included in the decorative plate was shown in Table 1.

Table 1 shows the configuration of the decorative board of each example and each comparative example.
In Table 1, a PVC sheet with an adhesive (product name: Dynok Film PS-503, manufactured by Sumitomo 3M) is “PVC”, and a melamine sheet with an adhesive (product name: Deco Rino Bear MFT-9201S, manufactured by Sumitomo Bakelite). “Melamine”, olefin sheet with adhesive (Product name: WS Saffmare WS-501E-S, manufactured by Dai Nippon Printing Co., Ltd.) “Olefin”, urethane rubber sheet (Product name: Tyrene sheet, manufactured by Tigers Polymer Co., Ltd., specific gravity) 1.2) “urethane”, cross-linked foamed polyethylene sheet (product name: Softlon # 1001, manufactured by Sekisui Chemical Co., Ltd., expansion ratio 10 times, specific gravity 0.1) “CEPE”, acrylonitrile butadiene rubber (product name: NBR) Sheet, Tigers Polymer Co., Ltd., specific gravity 1.0) is “NBR”, non-crosslinked foamed polyethylene sheet (product : Literon S, manufactured by Sekisui Chemical Co., Ltd., specific gravity 0.03) is “EPE”, the ratio of the material constituting the support layer to the specific gravity of the material constituting the magnetic layer is “ratio of specific gravity”, and the shape of the magnetic layer in plan view 1 has the shape shown in FIG. 1 and FIG. 3A shows the shape of the magnetic layer in plan view, and FIG. 3A shows the shape of the magnetic layer in plan view. 3 (b) has a shape as shown in FIG. 3 (b), and the magnetic layer has a shape in plan view as shown in FIG. 3 (c) as “FIG. 3 (c)”. A magnetic layer having a shape as shown in FIG. 3D is shown in FIG. 3D.

  In Table 1, the magnetic layer formed so as to cover the entire back surface of the decorative sheet is described as “entire surface” in the column of the shape of the magnetic layer.

  In addition, about the decorative board of each Example, the width | variety of each site | part (1st site | part, 2nd site | part, 3rd site | part, and 4th site | part) which comprises a magnetic layer was respectively made the same.

Moreover, the maximum thickness [mm] and the weight per unit area [kg / m ² ] were measured for the decorative plates of each Example and each Comparative Example, respectively.
These results are also shown in Table 1.

2. Evaluation About the decorative board of each Example and each comparative example, the adsorptivity of the decorative board to the adherend was evaluated by the following method.

  First, stick a PVC sheet with adhesive (product name: Dynoc Film PS-503, manufactured by Sumitomo 3M, 0.2 mm) on a flat stainless steel (SUS403) wall surface that stands substantially perpendicular to the ground. I attached. Subsequently, the decorative board of each Example and each comparative example was affixed on the wall surface to which this wallpaper was affixed so that the back surface side of a decorative board might oppose a wall surface, respectively. And the state of the decorative board immediately after affixing on a wall surface and the state of the decorative board 24 hours after sticking were observed, and the following references | standards evaluated.

A: There was no change in the position of the decorative board immediately after pasting and the position of the decorative board after 24 hours.
B: The position of the decorative board after 24 hours was located on the ground side from the position of the decorative board immediately after pasting. Or, the decorative board after 24 hours had partly bent.
C: The decorative board did not adhere to the wall surface and was peeled off from the wall surface.

These results are also shown in Table 1.
From the result of Table 1, the decorative board of each Example was a lightweight thing compared with the decorative board of each comparative example. Therefore, the decorative board of each Example was excellent in handling properties, such as carrying around, attaching to the adherend, and removing from the adherend.

Moreover, from the result of Table 1, the decorative board of each Example was excellent in the adhesiveness with respect to metal wall surfaces. Moreover, the decorative board of each Example had no distortion etc. on the decorative board surface, and was excellent in aesthetics.
On the other hand, with the decorative board of each comparative example, satisfactory results were not obtained.

100: decorative board 101: long side 102: short side 10: decorative sheet 11: design surface 12: back surface 20: magnetic layer 21: upper surface 22: lower surface 201: first region 202: second region 203: third Part 204: Fourth part 30: Support layer 31: Upper surface 32: Lower surface 40: Adhesive layer

Claims (8)

A decorative sheet having a design surface on which a design is applied and a back surface opposite to the design surface;
A magnetic layer provided on a part of the back surface and made of a material containing a magnetic material;
Provided in a region different from the region where the magnetic layer is provided on the back surface, and a support layer for supporting the decorative sheet,
The decorative board is characterized in that the specific gravity of the material constituting the support layer is smaller than the specific gravity of the material constituting the magnetic layer.   The decorative board according to claim 1, wherein the specific gravity of the material constituting the support layer is 1% or more and 40% or less of the specific gravity of the material constituting the magnetic layer.   The decorative board according to claim 1 or 2, wherein the specific gravity of the material constituting the support layer is 0.1 or more and 2.5 or less.   The decorative board according to any one of claims 1 to 3, wherein an area occupancy of the magnetic layer on the back surface is 10% or more and 50% or less when the back surface is viewed in plan.   The surface on the opposite side to the said decorative sheet of the said support layer and the surface on the opposite side to the said decorative sheet of the said magnetic layer are located in the same plane in any one of Claim 1 thru | or 4 The decorative board as described.   The decorative board according to any one of claims 1 to 5, wherein an average thickness of the magnetic layer is 0.6 mm or more and 3.0 mm or less.   The said magnetic layer is a decorative board of any one of Claim 1 thru | or 6 provided along the outer edge part of the said back surface.   The decorative board according to any one of claims 1 to 7, wherein the support layer is made of any one of a resin material and a rubber material.

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