JP7333687B2 - Road surface decorative sheet, graphic composition precursor, method for producing graphic composition sheet, and installation method for road surface decorative sheet - Google Patents

Description

TECHNICAL FIELD The present invention relates to a road surface decorative sheet to be attached to a road surface, a graphic composition precursor, a method for producing a graphic composition sheet, and a method for installing a road surface decorative sheet.

Decorative sheets for floors and road surfaces with colors, patterns, or letters are known. In order to maintain the visibility of characters, figures, etc. drawn on the decorative sheet for a long period of time, the decorative sheet is sometimes provided with a film containing a material such as an ultraviolet curable resin. For example, Patent Literature 1 discloses a method of forming a coating film of an ultraviolet curable paint on a seal having an image printed thereon and curing the coating film with an ultraviolet irradiation device.

JP 2006-161525 A

Vehicles such as automobiles come and go on the road surface, and the vehicles include heavy automobiles such as large trucks. Further, depending on the vehicle, the driver may operate the steering wheel on the decorative sheet while the vehicle is stopped, that is, perform stationary steering. In other words, when the decorative sheet is applied to the road surface, the decorative sheet may be damaged by the tires of the vehicle and dented or distorted, thereby reducing the visibility of characters, figures, and the like. Therefore, the decorative sheet used for the road surface is required to have surface strength against the heavy weight of the vehicle and resistance to stationary steering operation while the vehicle is stopped.

A road surface decorative sheet according to an aspect of the present invention comprises a graphic composition having an adhesive layer and a design layer provided on the adhesive layer; a surface coat layer covering the graphic composition and containing a urethane resin; have Further, a method for installing a road surface decorative sheet according to another aspect of the present invention includes the steps of installing, on a road surface, a graphic composition having an adhesive layer and a design layer provided on the adhesive layer; and coating a surface of the graphic structure placed thereon with a urethane resin.

ADVANTAGE OF THE INVENTION According to one aspect of the present invention, it is possible to provide a road surface decorative sheet with improved surface strength against heavy vehicle weight and improved stationary steering resistance performance against steering operation while the vehicle is stopped. According to another aspect of the present invention, it is possible to provide a method for installing a road surface decorative sheet that enables easy installation of a road surface decorative sheet having improved road followability on a road surface.

FIG. 1 is a diagram schematically showing a cross section of a road surface decorative sheet according to an embodiment of the present invention. FIG. 2 is a flowchart showing a method of installing the road surface decorative sheet according to the embodiment of the present invention. FIG. 3 is a plan view showing the road surface decorative sheet placed on the road surface according to the embodiment of the present invention. FIG. 4 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. FIG. 5 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. FIG. 6 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. FIG. 7 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. 8(a), 8(b) and 8(c) are diagrams schematically showing a cross section of a design layer including a retroreflective layer according to an embodiment of the present invention. FIG. 9(a) schematically illustrates a cross-section of a precursor of a graphic construction according to an embodiment of the present invention. (b) of FIG. 9 is a diagram schematically showing a cross section of a printed precursor on which a design layer is formed according to an embodiment of the present invention. FIG. 9(c) is a diagram schematically showing a cross section of a graphic construction sheet according to an embodiment of the present invention. FIG. 10 is a flow diagram illustrating a method of manufacturing a graphic construction sheet according to an embodiment of the present invention. (a) of FIG. 11 shows the measurement results of retroreflection performance according to Example 12, and (b) of FIG. 11 shows the measurement results of retroreflection performance according to Example 13. FIG.

A road surface decorative sheet according to one embodiment includes a graphic composition having an adhesive layer and a design layer provided on the adhesive layer, and a surface coat layer covering the graphic composition and containing a urethane resin. .

According to this road surface decorative sheet, the adhesive layer facilitates installation of the road surface decorative sheet on the road surface, and the design layer facilitates the application of designs such as letters and figures. Since the surface coat layer provided on the design layer contains urethane resin, it has high mechanical strength and high resistance to twisting. High mechanical strength ensures high surface strength, and high torsion resistance ensures high resistance to stationary steering. As a result, the road surface decorative sheet can improve the surface strength against the heavy weight of the vehicle and the stationary steering resistance against the steering operation while the vehicle is stopped.

In the road surface decorative sheet according to another aspect, the urethane resin may contain a two-component urethane resin composition having a polyol as a main agent and a polyfunctional isocyanate as a curing agent. According to this road surface decorative sheet, the urethane resin provides higher mechanical strength and higher resistance to twisting. This road surface decorative sheet can further improve the surface strength against the heavy weight of the vehicle and the stationary steering resistance against the steering operation while the vehicle is stopped.

In the road surface decorative sheet according to another aspect, the surface coat layer may have an anti-slip member. According to this road surface decorative sheet, the tires of a vehicle running on the road surface decorative sheet are less likely to slip.

In the road surface decorative sheet according to another aspect, the design layer may have an ink-receiving layer and a support layer for supporting the ink-receiving layer, and the ink-receiving layer may be provided on the support layer. Since this road surface decorative sheet has an ink-receiving layer, characters, figures, etc. can be drawn in detail on the ink-receiving layer. In addition, the support layer that supports the ink-receiving layer absorbs depressions and protrusions on the road surface, thereby reducing deformation of characters, figures, etc. drawn on the ink-receiving layer.

In the road surface decorative sheet according to another aspect, the support layer may contain aluminum foil. According to this road surface decorative sheet, the support layer absorbs depressions and protrusions on the road surface more, and deformation of characters, figures, etc. drawn on the ink receiving layer is reduced.

A road surface decorative sheet according to another aspect may further include a retroreflective member at the upper end of the surface coat layer. According to this road surface decorative sheet, the visibility of the road surface decorative sheet for a vehicle driver or the like is improved by the retroreflective member provided at the upper end portion of the surface coat layer and exposed from the surface coat.

In the road surface decorative sheet according to another aspect, the retroreflective member may contain glass beads. According to this road surface decorative sheet, since the retroreflective member contains the glass beads, the retroreflection is less likely to be affected by changes in the direction of incidence of external light. Better visibility.

In the road surface decorative sheet according to another aspect, the design layer further has an ink-receiving layer and a retroreflective layer, and the retroreflective layer may be disposed between the ink-receiving layer and the adhesive layer. good. According to this road surface decorative sheet, the retroreflective layer may be provided between the ink-receiving layer and the adhesive layer, that is, below the design layer. After passing through the ink-receiving layer of the design layer, the light can be reflected by the retroreflective layer and pass through the ink-receiving layer again. As a result, the visibility of characters, figures, etc. applied on the ink-receiving layer of the design layer to drivers of automobiles is further improved.

In the road surface decorative sheet according to another aspect, the retroreflective layer has an intermediate resin layer surrounding the retroreflective member with a resin, and a reflective vapor deposition layer covering the intermediate resin layer, and the reflective vapor deposition layer includes the intermediate resin layer. It may be arranged between the resin layer and the adhesive layer. According to this road surface decorative sheet, since the reflective deposition layer may be arranged between the intermediate resin layer and the adhesive layer, the external light incident on the road surface decorative sheet is reflected by the ink receiving layer and the intermediate resin layer. After passing through, it can be reflected by the reflective deposition layer and can pass through the intermediate resin layer and the ink receiving layer again. The retroreflective member of the retroreflective layer can be stably held by being surrounded by resin in the intermediate resin layer.

In the road surface decorative sheet according to another aspect, the retroreflective member of the retroreflective layer may contain glass beads. According to this road surface decorative sheet, since the retroreflective member contains the glass beads, the retroreflection is less likely to be affected by changes in the direction of incidence of external light. Better visibility.

In the road surface decorative sheet according to another aspect, the design layer may further have a support layer that supports the retroreflective layer and is arranged between the retroreflective layer and the adhesive layer. According to this road surface decorative sheet, the support layer absorbs depressions and protrusions on the road surface more, and deformation and deformation of the retroreflective layer are reduced.

A graphic construction precursor according to one embodiment has a pre-design layer including an ink-receiving layer and a support layer, and a backing film layer having a base film layer and an adhesive layer, wherein the backing film layer is the adhesive layer. It sticks to the pre-design layer so that it can be peeled off.

According to this graphic composition precursor, since it has a backing film layer, it has high shape stability during printing by an ink jet printer or the like, and characters, figures, etc. can be clearly printed on the pre-design layer. In addition, since the backing film layer can be easily peeled off from the design layer produced by printing the pre-design layer, the design layer can be easily installed on the road surface after removing the backing film layer.

In a graphic construction precursor according to another aspect, the precursor may have a bending resistance greater than 320 mgf and the adhesive layer may have an adhesion force of less than 0.5 N/25 mm.

According to this graphic composition precursor, since it has a bending resistance of more than 320 mgf, the shape of the sheet is stable even during printing and can be smoothly conveyed. In addition, since the adhesive layer of the backing film layer has an adhesive strength of less than 0.5 N/25 mm, the backing film layer can be easily removed from the printed precursor after the pre-design layer is printed with characters, figures, etc. The design layer can be easily peeled off, and the design layer can be easily installed on the road surface, for example, via an adhesive layer.

A method for producing a graphic construction sheet according to one embodiment comprises using a graphic construction precursor having at least a backing film layer including an ink-receiving layer, a support layer, and an adhesive layer in this order, to produce an ink-receiving layer of the precursor. It has a step of forming a design layer by printing thereon, and a step of peeling off the backing film layer from the printed precursor on which the design layer is formed.

According to this method of producing a graphic construction sheet, for example, a design layer can be formed by printing on the ink-receiving layer using a graphic construction precursor using a printer in a factory. After the design layer is formed, the precursor containing the printed design layer is conveyed to the road surface where people and vehicles come and go. The graphic construction sheet can be installed conveniently.

A method for installing a road surface decorative sheet according to one embodiment includes the steps of installing a graphic composition having an adhesive layer and a design layer provided on the adhesive layer on a road surface; and coating the surface of the structure with a urethane resin.

According to this installation method of the road surface decorative sheet, the flexible graphic structure is first installed on the road surface, and then the decorative sheet is formed by coating the urethane resin with high coverage, thereby improving the road followability. It is possible to easily install the decorative sheet for road surface with improved resistance on the road surface.

In the road surface decorative sheet according to another aspect, in the step of coating the urethane resin, the area coated with the urethane resin includes the road surface portion that is not covered with the graphic structure and is exposed around the graphic structure. It's okay.

According to this installation method of the road surface decoration sheet, the surface coat layer is widely coated not only on the graphic structure but also around the graphic structure including the edges of the graphic structure, so that the road surface decoration Peeling of the sheet can be effectively suppressed.

In the present specification, the term "road surface decorative sheet" refers to a decorative sheet that is attached to roads where people and vehicles pass by and road surfaces of parking lots, and on which traffic signs, destination information, etc. are drawn using characters, figures, and the like. The road surface is composed of common road surface materials such as asphalt, concrete, or stone. “Surface coat layer” refers to a layer having an exposed surface on the surface of the road surface decorative sheet formed by a coating method. People and vehicles come and go on the surface coat layer. A "design layer" is a layer for mainly providing a design including characters, figures, etc., to the road surface decorative sheet. Further, the "adhesive layer" is a layer containing an adhesive and used for attaching the road surface decorative sheet to the road surface. In addition, the "graphic composition" is a "road surface decorative sheet" before having a surface coat layer, and is a composition having at least an adhesive layer and a design layer provided on the adhesive layer. It is also possible to use the product itself as a road surface decorative sheet. A "graphic construction precursor" refers to a sheet-like member used to form a design layer of a graphic construction. It is an independently manufacturable object. The "precursor" includes the pre-design layer, and the "pre-design layer" corresponds to the design layer before printing on the ink-receiving layer. The "backing film layer" is adhered to the pre-design layer so that it can be peeled off in order to stabilize the shape of the pre-design layer during printing, and is peeled off from the design layer after printing is completed. It is the layer where The "bending resistance" of the precursor of the graphic construction refers to the value measured by the Gurley Bending Resistance Test. For the sake of convenience, the backing film layer is peeled off from the printed precursor, and in order to distinguish substantially only the design layer from the graphic construction, the construction is conveniently referred to as a "graphic construction sheet." shall be The graphic construction sheet is also independently manufacturable.

The road surface decorative sheet will be described in detail below with reference to the drawings. In this description, the same reference numerals are used for the same elements, and overlapping descriptions are omitted. In this embodiment, the X-axis, Y-axis, and Z-axis are set with respect to FIGS. The Z-axis is set in the stacking direction of the decorative sheets.

FIG. 1 is a diagram schematically showing a cross section of a road surface decorative sheet according to an embodiment. In FIG. 1, the road surface decoration sheet 1 attached on the road surface 5 is depicted. The road surface decorative sheet 1 includes a surface coat layer 10 , a design layer 20 and an adhesive layer 30 . Design layer 20 is provided on adhesive layer 30 , and graphic construction 16 has design layer 20 and adhesive layer 30 . The graphic construction 16 is covered with the surface coat layer 10 . In this embodiment, the adhesive layer 30 is positioned at the bottom of the road surface decorative sheet 1 . In the present embodiment, "the design layer 20 is provided on the adhesive layer 30" includes that the design layer 20 is provided on the adhesive layer 30 so as to be adjacent to the adhesive layer 30. and the adhesive layer 30, for example, the design layer 20 is provided above the adhesive layer 30 so as to sandwich another layer.

The surface coat layer 10 includes a resin layer 13 containing a solvent-resistant crosslinked resin, particularly a urethane resin. Various urethane resins known as urethane resins can be used. A urethane resin can be obtained by drying or curing a urethane resin composition. The urethane resin composition may be water-based or non-aqueous. Advantageously, the urethane resin is a cured product of a two-component urethane resin composition. A two-component urethane resin composition is generally a non-aqueous urethane resin composition. A two-liquid type urethane resin composition generally contains a polyol as a base agent and a polyfunctional isocyanate as a curing agent.

As polyols, polyester polyols such as polycaprolactone diols and polycaprolactone triols; polycarbonate polyols such as cyclohexanedimethanol carbonate, 1,6-hexanediol carbonate, and combinations thereof can be used. These polyols can impart transparency, weather resistance, strength, chemical resistance, etc. to the surface coat layer. In particular, polycarbonate polyol can form a surface coating layer with high transparency and chemical resistance.

As polyfunctional isocyanates, aliphatic polyisocyanates, alicyclic polyisocyanates, aromatic polyisocyanates, araliphatic polyisocyanates, etc., and polymers of these polyisocyanates (dimers, trimers, etc.), biuret modified products, allophanate modified products , polyol-modified, oxadiazinetrione-modified, carbodiimide-modified, and the like. From the viewpoint of imparting extensibility to the surface coat layer without forming an excessive crosslinked structure, the polyfunctional isocyanate is preferably a diisocyanate. Such diisocyanates include aliphatic diisocyanates such as tetramethylene diisocyanate, hexamethylene diisocyanate (HDI); isophorone diisocyanate, trans, trans-, trans, cis- and cis, cis-dicyclohexylmethane-4,4'-diisocyanate and Alicyclic diisocyanates such as mixtures thereof (hydrogenated MDI); 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate, and isomeric mixtures of these tolylene diisocyanates (TDI), 4,4'-diphenylmethane Aromatic diisocyanates such as diisocyanates, 2,4′-diphenylmethane diisocyanate and 2,2′-diphenylmethane diisocyanate, and isomeric mixtures of these diphenylmethane diisocyanates (MDI); 1,3- or 1,4-xylylene diisocyanate or mixtures thereof (XDI), 1,3- or 1,4-tetramethylxylylene diisocyanate or mixtures thereof (TMXDI).

The equivalent ratio of polyol to polyisocyanate is generally about 0.6 equivalents or more, about 0.7 equivalents or more, about 2 equivalents or less, or about 1.2 equivalents or less of polyisocyanate to 1 equivalent of polyol. may

The thermoplastic urethane resin of the resin layer 13 can further contain an anti-slip member. As the anti-slip member, for example, particles made of an inorganic material or an organic material, and non-adhesive substantially spherical particles can be used. Specifically, particles made of alumina, silica, glass, other metal oxides, polyester resin, polystyrene resin, acrylic resin, or urethane resin can be used as the anti-slip member. From the viewpoint of solvent resistance and strength resistance, it is preferable to use glass particles such as soda lime glass particles as the anti-slip member. The particle size of this soda lime glass is, for example, 100 μm to 800 μm. The content of the soda lime glass 14 in the thermoplastic urethane resin is, for example, 0.1 mass % or more, or 10 mass % or more, and 50 mass % or less, or 40 mass % or less.

The surface coat layer 10 may further contain other resins in addition to the urethane resin. Examples of resins other than urethane resins include acrylic resins, vinyl chloride resins, silicone resins, epoxy resins, fluorine resins, melamine resins, alkyd resins, and mixtures thereof. The surface coat layer 10 has transparency such that the design layer 20 can be seen through the surface coat layer 10 from the outside of the road surface decorative sheet 1 . Transparency means that things on the opposite side or inside can be seen through the surface coat layer 10, and translucency is also included.

The surface coat layer 10 has an upper end portion 11 . The upper end portion 11 is positioned at the top of the road surface decorative sheet 1 . The road surface decorative sheet 1 can further include a retroreflective member 12 on the upper end portion 11 of the surface coat layer 10 . The retroreflective member 12 includes, for example, glass beads, white silica, and glass prisms. The retroreflective member 12 is produced by, for example, scattering retroreflective beads in the resin of the surface coat layer 10 . The retroreflective beads are scattered so as to be exposed from the resin of the surface coat layer 10 in order to retroreflect light from the outside of the road surface decorative sheet 1 . Since the surface coat layer 10 contains the glass beads, retroreflection is less likely to be affected by changes in the incident direction of external light, and the visibility of the road surface decorative sheet for drivers of automobiles and the like is further improved.

The retroreflective member 12 can also be produced by providing a retroreflective sheet on the surface coat layer 10 . The retroreflective sheet is, for example, a commercially available glass bead type or prism type sheet. The glass bead type retroreflective sheet is, for example, Scotchlite ^TM 680 Series (manufactured by 3M).

The design layer 20 has, for example, a support layer 22, an ink-receiving layer 24, and an ink layer . The support layer 22, the ink receiving layer 24, and the ink layer 26 are provided on the adhesive layer 30 in this order.

The support layer 22 can contain a material with excellent chemical stability that does not permeate components such as asphalt constituting the road surface 5 when the road surface decorative sheet 1 is attached to the road surface 5. - 特許庁Further, the support layer 22 can contain a material having excellent ductility that can follow depressions and protrusions of the road surface 5 when the road surface decorative sheet 1 is attached to the road surface 5 . Materials for such a support layer 22 include, for example, a metal foil such as aluminum or an aluminum alloy. The thickness of the support layer 22 is, for example, 20 μm to 200 μm.

The support layer 22 absorbs dents and protrusions on the road surface 5 and reduces deformation of characters, figures, etc. of the ink layer 26 formed on the ink receiving layer 24 . Since the support layer 22 can contain aluminum foil, the support layer 22 absorbs dents and protrusions on the road surface 5 more, and deformation of characters, figures, etc. drawn by the ink layer 26 on the ink receiving layer 24 is prevented. reduced.

The ink receiving layer 24 has, for example, a resin film or sheet containing a white pigment. White adhesives include, for example, films or sheets made of acrylic polymers, urethane polymers, polyesters such as polyethylene terephthalate (PET), polyvinyl chloride, polyolefins such as polyethylene and polypropylene (PP), or fluoropolymers. Among these specific examples, acrylic polymers are particularly desirable in terms of printability. An acrylic pressure-sensitive adhesive containing titanium oxide as a white pigment may be used. The thickness of the ink receiving layer 24 can be, for example, 3 μm to 500 μm, and can also be 5 μm to 300 μm.

The ink layer 26 is formed on the ink receiving layer 24 by a printing technique using a colorant such as ink or toner. Printing techniques include, for example, gravure printing, screen printing, offset printing, electrostatic printing, inkjet printing, or thermal transfer printing. An ink layer 26 on the ink-receiving layer 24 provides the printed image. With the ink layer 26, characters, graphics, and the like can be drawn in detail.

Among the various printing techniques described above, inkjet printing or thermal transfer printing can conveniently print various images and provide full-color printed images with outdoor weather resistance. Printers used for inkjet printing include solvent inkjet printers, UV inkjet printers or silk screens. Printers used for thermal transfer printing include hot-melt thermal transfer printers, sublimation thermal transfer printers, and the like. Specific examples of UV inkjet printers include JV5 inkjet printers (manufactured by Mimaki Engineering Co., Ltd.), and specific examples of inks for inkjet printers include genuine Mimaki inks (manufactured by Mimaki Engineering Co., Ltd.).

The adhesive layer 30 can be a heat-sensitive adhesive layer formed of a heat-sensitive adhesive such as polyurethane-based adhesive, polyester-based adhesive, olefin-based adhesive, acrylic-based adhesive, and vinyl chloride-based adhesive. Among these adhesives, from the viewpoint of weather resistance and color, acrylic adhesives are preferable, and heat-sensitive adhesives are particularly preferable.

The adhesive layer 30 is configured to have an elastic modulus of 0.3 MPa or more at 65° C., for example. When the elastic modulus of the adhesive layer 30 at 65° C. is 0.3 MPa or more, even when the road surface decorative sheet 1 is used in a high-temperature environment (for example, 50° C. or more), distortion of the decoration due to stationary steering of the vehicle is suppressed. be able to. From a similar point of view, the elastic modulus of the adhesive layer 30 at 65° C. can be 0.35 MPa or more, or 0.4 MPa or more. On the other hand, from the viewpoint of workability, the elastic modulus of the adhesive layer 30 at 65° C. is preferably 10 GPa or less, more preferably 5 GPa or less, and even more preferably 1 GPa or less. Here, "elastic modulus" means storage elastic modulus (G') measured at a heating rate of 5°C/sec.

Such an adhesive layer 30 may be a heat-sensitive adhesive layer formed of a heat-sensitive adhesive such as a polyurethane-based adhesive, a polyester-based adhesive, an olefin-based adhesive, an acrylic-based adhesive, or a vinyl chloride-based adhesive. can be done. Among these adhesives, from the viewpoint of weather resistance and color, acrylic adhesives are preferable, and heat-sensitive adhesives are particularly preferable. More specifically, the adhesive layer 30 is desirably a heat-sensitive adhesive layer that exhibits almost no adhesiveness at 20° C. and exhibits adhesiveness at 100° C. or higher, for example. Such an adhesive layer 30 contains, for example, a first acrylic polymer having a Tg of 0° C. or more and a second acrylic polymer having a Tg of less than 0° C., and 100 parts by weight of the first acrylic polymer On the other hand, it is preferable to use an adhesive containing 100 to 230 parts by weight of the second acrylic polymer. Additionally, the adhesive may include a tackifier that is solid at 65°C and has a melting point of 80°C or higher. As such a tackifier, for example, rosin ester, terpene phenol and the like can be used. In addition, it is preferable that the adhesive does not contain a cross-linking agent. The thickness of the adhesive layer 30 is, for example, 30 μm or more, or 50 μm or more, and 200 μm or less, or 150 μm or less.

In this embodiment, the adhesive layer 30 facilitates the installation of the road surface decorative sheet 1 on the road surface 5, and the design layer 20 facilitates the application of designs such as letters and figures. Since the surface coat layer 10 provided on the design layer 20 contains urethane resin, it has high mechanical strength and high resistance to twisting. High mechanical strength ensures high surface strength, and high torsion resistance ensures high resistance to stationary steering. As a result, the road surface decorative sheet 1 can improve the surface strength against the heavy weight of the vehicle and the stationary steering resistance against the steering operation while the vehicle is stopped.

Next, the graphic structure 16 for forming the design layer 20 of the road surface decorative sheet 1 will be described. The graphic construction 16 includes a design layer 20 and an adhesive layer 30. The design layer 20 included in the graphic construction 16 supports at least an ink-receiving layer 24 that is part of the design layer 20 and the ink-receiving layer 24. A support layer 22 may be provided for carrying out. Support layer 22 may comprise aluminum foil. After the graphic construction 16 is manufactured, the design layer 20 of the graphic construction 16 can be covered with the surface coat layer 10 containing urethane resin at another location such as on the road surface. The adhesive layer 30 is provided on the surface of the design layer 20 opposite to the surface coat layer 10 .

FIG. 2 is a flowchart showing a method of installing the road surface decorative sheet according to the embodiment. In this installation method MT1, first, after the graphic construction 16 is manufactured, the graphic construction 16 is installed on the road surface 5 (step S1). The graphic construction 16 is placed on the road surface 5 by means of an adhesive layer 30 . The road surface 5 includes asphalt, concrete or stone. The graphic construct 16 is placed on the road surface 5 by being hit with a tool such as a rubber hammer.

In this embodiment, subsequently, the surface coat layer 10 is formed on the surface 16a of the graphic structure 16 placed on the road surface 5 (step S2). That is, in step 2, the urethane resin for forming the surface coat layer 10 is exposed on the surface 16a of the graphic construction 16 and around the graphic construction 16 without being covered by the graphic construction 16. It is coated on the portion 6, i.e. on the road surface portion 6 where the graphic structure 16 is not installed. As a result, the surface coat layer 10 is formed on the surface 16 a of the graphic construction 16 and on the road surface portion 6 . A retroreflective member 12 may be further provided on the upper end portion 11 of the surface coat layer 10 . The retroreflective member 12 is produced by, for example, scattering retroreflective beads on the urethane resin of the surface coat layer 10 before curing.

When attaching the road surface decorative sheet 1 to the road surface 5, a road surface bonding layer 40 may be formed in advance on the road surface 5 to which the road surface decorative sheet 1 is applied (see FIG. 1), if necessary. ). The road surface bonding layer 40 is provided together with the adhesive layer 30 of the road surface decorative sheet 1 to adhere the road surface decorative sheet 1 to the road surface 5 more firmly. The road surface bonding layer 40 may contain, for example, the adhesive contained in the adhesive layer 30, and may contain an epoxy adhesive, a rubber adhesive, a chloroprene adhesive, or the like.

FIG. 3 is a plan view showing a road surface decorative sheet placed on a road surface according to the embodiment. The road surface decorative sheet 1 includes a graphic composition 16 and a surface coat layer 10 covering the graphic composition 16 . The shape of the graphic component 16 is not particularly limited, and may take any shape such as a line shape, a circle, a rectangle such as a rectangle or square, a polygonal shape, or an irregular shape, and its size is also not limited. For example, in the road surface decorative sheet 1 having rectangular graphic constituents 16, the first length L1 (X-axis direction) of the graphic constituents 16 is, for example, 25 to 10,000 mm, and the first length L1 of the graphic constituents 16 is 2 (Y-axis direction) is, for example, 25 to 10,000 mm. The third length L3 (X-axis direction) of the surface coat layer 10 is, for example, 27 to 10,100 mm, and the fourth length L4 (Y-axis direction) of the surface coat layer 10 is, for example, 27 to 10,100 mm. 100 mm. The surface coat layer 10 is also formed on the road surface portion 6 exposed around the graphic structure 16, and the first width W1 (X-axis direction) of the surface coat layer 10 on the road surface portion 6 is, for example, 1 50 mm, and the second width W2 (Y-axis direction) of the surface coat layer 10 on the road surface portion 6 is, for example, 1 to 50 mm.

According to the road surface decorative sheet installation method MT1, the flexible graphic structure 16 is first installed on the road surface 5, and then coated with a highly covering urethane resin (including a urethane resin-containing liquid). Since the road surface decorative sheet 1 is formed, the road surface decorative sheet with improved road followability can be easily installed on the road surface 5.例文帳に追加In addition, after coating the surface coat layer 10, by spraying a recurring reflector such as glass beads or an anti-slip agent on the surface coat layer 10 before curing, it can be easily fixed to the upper end portion 11 of the surface coat layer 10. You can also

Further, in step S2, the area coated with the urethane resin includes the road surface portion 6 that is not covered with the graphic construction 16 and is exposed around the graphic construction 16 . Since the surface coat layer 10 is widely coated not only on the graphic constituent 16 but also around the graphic constituent 16 including the edges of the graphic constituent 16, peeling of the road surface decorative sheet 1 can be effectively prevented. can be suppressed.

FIG. 4 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. In FIG. 4, the road surface decoration sheet 1p stuck on the road surface 5 is drawn. The road surface decorative sheet 1 p includes a surface coat layer 10 , a design layer 20 and an adhesive layer 30 . Design layer 20 is provided on adhesive layer 30 , and graphic construction 16 has design layer 20 and adhesive layer 30 . The graphic construction 16 is covered with the surface coat layer 10 . The adhesive layer 30 is positioned at the bottom of the road surface decorative sheet 1p. In addition, in the road surface decorative sheet 1p, the same reference numerals are given to the same structures and elements as in the road surface decorative sheet 1, and detailed description thereof will be omitted.

The design layer 20 has a support layer 22 , an ink-receiving layer 24 and an ink layer 26 , and can further have a transparent resin film that can serve as an ink-receiving layer 28 on the ink layer 26 . The transparent resin film is, for example, a cast film made of polyvinyl chloride, acrylic resin, or the like, and is a flexible film that is transparent in the visible range. When using a transparent resin film as the ink receiving layer 28, the ink layer 26 can be formed on the transparent resin film. In this case, the ink-receiving layer 24 can function not as the ink-receiving layer 24 but as a white adhesive layer. Since the road surface decorative sheet 1 is provided with a transparent resin film as an ink receiving layer, the coloring applied to the design layer 20 is maintained for a longer period of time compared to a mode in which no ink receiving layer is provided.

FIG. 5 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. In FIG. 5, the road surface decorative sheet 1q attached on the road surface 5 is depicted. The road surface decorative sheet 1 q includes a surface coat layer 10 , a design layer 20 and an adhesive layer 30 . Design layer 20 is provided on adhesive layer 30 , and graphic construction 16 has design layer 20 and adhesive layer 30 . The graphic construction 16 is covered with the surface coat layer 10 . The adhesive layer 30 is positioned at the bottom of the road surface decorative sheet 1q. In the road surface decorative sheet 1q, the same structures and elements as those of the road surface decorative sheet 1 or the road surface decorative sheet 1p are denoted by the same reference numerals, and detailed description thereof will be omitted.

The surface coat layer 10 of the road surface decorative sheet 1q can include a resin layer 13 and an anti-slip layer 15 . The anti-slip layer 15 can comprise, for example, a first bead coat layer 17 and a second bead coat layer 18 . The first bead coat layer 17 includes, for example, particles 17A having a particle size of 20 μm to 60 μm and an anti-slip resin 17B that holds the particles 17A. The second bead coat layer 18 comprises particles 18A with a particle size of 20 μm to 60 μm and an anti-slip resin 18B that holds the particles 18A. Particle 17A or particle 18A includes, for example, particles made of alumina, silica, glass, other metal oxides, polyester resin, polystyrene resin, acrylic resin, or urethane resin. These particles are applied to the anti-slip resin 17B or the anti-slip resin 18B, and the coating weight of the particles is, for example, 10 g/m ² to 50 g/m ² . Particle 17A or particle 18A is an example of an anti-slip member.

The types of the anti-slip resins 17B and 18B are not particularly limited as long as they are resins capable of holding the particles 17A and 18A contained in the anti-slip layer 15 . Specifically, the anti-slip resins 17B and 18B include, for example, urethane resin, acrylic resin, vinyl chloride resin, silicone resin, epoxy resin, fluorine resin, melamine resin, alkyd resin, or a mixture thereof.

In the production of the road surface decorative sheet 1q, the particles 17A and 18A contained in the anti-slip layer 15 cause undulations on the upper surface of the anti-slip layer 15, so that the surface of the resin layer 13 formed on the undulations is also undulated. , an uneven surface coating layer 10 is formed (undulations are not shown). In the road surface decorative sheet 1q, the surface coat layer 10 has the anti-slip layer 15 containing the particles 17A and 18A, so tires of vehicles running on the road surface decorative sheet 1 and pedestrians are less likely to slip.

FIG. 6 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. In FIG. 6, the road surface decorative sheet 1r attached on the road surface 5 is illustrated. The road surface decorative sheet 1r includes a surface coat layer 10r, a design layer 20r, and an adhesive layer 30. As shown in FIG. Design layer 20 r is provided on adhesive layer 30 , and graphic construction 16 r has design layer 20 r and adhesive layer 30 . The graphic constituent 16r is covered with the surface coat layer 10r. In this embodiment, the adhesive layer 30 is positioned at the bottom of the road surface decorative sheet 1r. In addition, in the road surface decorative sheet 1r, the same reference numerals are given to the same structures and elements as in the road surface decorative sheet 1, and detailed description thereof will be omitted.

The surface coat layer 10r includes a resin layer 13, and the resin layer 13 contains, for example, a thermoplastic urethane resin. The thermoplastic urethane resin of the resin layer 13 can further contain an anti-slip member. In the road surface decorative sheet 1r of the present embodiment, unlike the road surface decorative sheet 1, the road surface decorative sheet 1p, and the road surface decorative sheet 1q, the surface coat layer 10r does not include a retroreflective member.

The design layer 20r has, for example, a retroreflective layer 23r, an ink receiving layer 24, and an ink layer 26. FIG. The retroreflective layer 23r, the ink receiving layer 24, and the ink layer 26 can be provided on the adhesive layer 30 in this order. The retroreflective layer 23 r can be arranged between the ink receiving layer 24 and the adhesive layer 30 .

According to this road surface decorative sheet 1r, the retroreflective layer 23r may be provided between the ink receiving layer 24 and the adhesive layer 30, that is, below the design layer 20r. After passing through the ink-receiving layer 24 of the design layer 20r, the external light is reflected by the retroreflective layer 23r and can pass through the ink-receiving layer 24 again. External light passing through the ink-receiving layer 24 of the design layer 20r is reflected by the retroreflective layer 23r and passes through the ink-receiving layer 24 again. Visibility for the driver or the like is further improved.

The retroreflective layer 23r has, for example, an intermediate resin layer 25 that encloses the retroreflective member 12 with resin, and a reflective deposition layer 27 that covers the intermediate resin layer 25. As shown in FIG. The reflective deposition layer 27 is arranged, for example, between the intermediate resin layer 25 and the adhesive layer 30 . The retroreflective member 12 of the retroreflective layer 23r can be stably held by being surrounded by resin in the intermediate resin layer 25. FIG.

The type of the intermediate resin layer 25 is not particularly limited as long as it is a resin capable of surrounding the retroreflective member 12 . The intermediate resin layer 25 contains, for example, urethane resin, acrylic resin, vinyl chloride resin, silicone resin, epoxy resin, fluororesin, melamine resin, alkyd resin, or a mixture thereof.

The reflective evaporation layer 27 includes, for example, an aluminum evaporation film or a metal evaporation film such as a silver evaporation film. The reflective deposition layer 27 can further improve the reflection efficiency of the retroreflective layer 23 r together with the retroreflective member 12 . The reflective deposition layer 27 is produced by vapor deposition of aluminum or silver, for example. The thickness of the reflective deposition layer 27 is, for example, approximately 10 nm to 500 nm.

According to this road surface decorative sheet 1r, since the reflective vapor deposition layer 27 may be arranged between the intermediate resin layer 25 and the adhesive layer 30, the external light incident on the road surface decorative sheet 1r receives the ink. After passing through the layer 24 and the intermediate resin layer 25, the light is reflected by the reflective deposition layer 27 and can pass through the intermediate resin layer 25 and the ink receiving layer 24 again. As a result, the visibility of characters, figures, etc. applied on the ink-receiving layer 24 to the driver of an automobile is improved.

The retroreflective member 12 includes, for example, glass beads, white silica, and glass prisms. The retroreflective member 12 is a member for retroreflecting light from the outside of the road surface decorative sheet 1r. According to this road surface decorative sheet 1r, since the retroreflective member 12 contains the glass beads, the retroreflection is less likely to be affected by changes in the direction of incidence of external light, and thus the road surface decoration for the driver of an automobile or the like is possible. Visibility of the seat is further improved.

FIG. 7 is a diagram schematically showing a cross section of a road surface decorative sheet according to another embodiment of the present invention. In FIG. 7, the road surface decorative sheet 1r attached on the road surface 5 is illustrated. The road surface decorative sheet 1 s includes a surface coat layer 10 s, a design layer 20 s, and an adhesive layer 30 . The design layer 20 s is provided on the adhesive layer 30 , and the graphic composition 16 s has the design layer 20 s and the adhesive layer 30 . The graphic construction 16s is covered with a surface coat layer 10s. In this embodiment, the adhesive layer 30 is positioned at the bottom of the road surface decorative sheet 1s. In addition, in the road surface decorative sheet 1s, the same reference numerals are given to the same structures and elements as in the road surface decorative sheet 1, and detailed description thereof will be omitted.

10 s of surface coat layers are provided with the resin layer 13, and the resin layer 13 contains a thermoplastic urethane resin, for example. The thermoplastic urethane resin of the resin layer 13 can further contain an anti-slip member. In the road surface decorative sheet 1s of the present embodiment, unlike the road surface decorative sheet 1, the road surface decorative sheet 1p, and the road surface decorative sheet 1q, the surface coat layer 10r does not include a retroreflective member.

The design layer 20s has a support layer 22, a retroreflective layer 23s, an ink receiving layer 24, and an ink layer 26, for example. The support layer 22, the retroreflective layer 23s, the ink receiving layer 24, and the ink layer 26 can be provided on the adhesive layer 30 in this order. The support layer 22 , for example, supports the retroreflective layer 23 s and is arranged between the retroreflective layer 23 s and the adhesive layer 30 . The support layer 22 can have, for example, the same structure as the support layer 22 of the road surface decorative sheet 1, and according to the road surface decoration sheet 1s, the support layer 22 absorbs depressions and protrusions of the road surface 5 more. , and deformation of the retroreflective layer 23s are reduced.

The retroreflective layer 23s has, for example, an intermediate resin layer 25 surrounding the retroreflective member 12 with resin. If necessary, the retroreflective layer 23 s may further have a reflective deposition layer covering the intermediate resin layer 25 . The reflective evaporation layer is arranged, for example, between the intermediate resin layer 25 and the support layer 22 . The retroreflective layer 23s may not further have a reflective vapor deposition layer covering the intermediate resin layer 25, and the road surface decorative sheet 1s is the same as the road surface decorative sheet 1r except for the reflective vapor deposition layer and the support layer 22. It has a similar structure and can have similar materials.

8(a), 8(b) and 8(c) are diagrams schematically showing the cross section of the design layer including the retroreflective layer according to the embodiment.

In the example shown in FIG. 8A, in the design layer 20a, the retroreflective layer 23a includes, for example, the retroreflective member 12a, the intermediate resin layer 25a surrounding the retroreflective member 12a, and the intermediate resin layer 25a. and a reflective evaporation layer 27a covering the . The reflective deposition layer 27a is arranged, for example, between the intermediate resin layer 25a and the adhesive layer 30a.

The retroreflecting member 12a is produced, for example, by dispersing glass beads for retroreflection in the intermediate resin layer 25a. Light from the outside of the road surface decorative sheet passes through the ink receiving layer 24a and the intermediate resin layer 25a, is reflected by the retroreflective member 12a, and passes through the intermediate resin layer 25a and the ink receiving layer 24a again. It is retroreflected toward the outside. The glass beads can be dispersed within the intermediate resin layer 25a so as to be regarded as a substantially monolayer.

The reflective evaporation layer 27a covers the lower surface 25d of the intermediate resin layer 25a, and can have a structure that matches the shape of the retroreflective member 12a. For example, when the retroreflective member 12a includes glass beads, it can have a recessed structure that conforms to the spherical shape of the glass beads.

In the example shown in FIG. 8B, in the design layer 20b, the retroreflective layer 23b includes, for example, a retroreflective member 12b, a reflective deposited layer 27b, and an air layer 29b. The reflective evaporation layer 27b, the retroreflective member 12b, and the air layer 29b can be provided on the adhesive layer 30b in this order.

The retroreflective layer 23b has, for example, a binder portion 31b in the air layer 29b, and the binder portion 31b can bond the ink receiving layer 24b and the adhesive layer 30b. The binder portion 31b may have a structure integrated with the adhesive layer 30b. Due to the binder portion 31b, the air layer 29b can resist the weight of people and vehicles that come and go on the road surface decorative sheet 1 and maintain the space.

The retroreflecting member 12b is manufactured by vapor-depositing a metal on the surface of a support on which glass beads for retroreflection are densely dispersed to form a reflective vapor deposition layer 27b, followed by peeling off from the support. be. Metals to be vapor-deposited are, for example, aluminum and silver. Light from the outside of the road surface decorative sheet passes through the ink receiving layer 24b and the air layer 29b, is reflected by the retroreflective member 12b, and passes through the air layer 29b and the ink receiving layer 24b again. It is retroreflected toward the outside. The glass beads can be dispersed within the intermediate resin layer 25a so as to be regarded as a substantially monolayer.

In the example shown in FIG. 8(c), in the design layer 20r, the retroreflective layer 23c has, for example, an intermediate layer 32c, an air layer 29c, and a retroreflective member 12c. The intermediate layer 32c, the air layer 29c, and the retroreflective member 12c can be provided on the adhesive layer 30 in this order. The intermediate layer 32c has, for example, a binder portion 31c, and the binder portion 31c can bond the ink receiving layer 24c and the adhesive layer 30c. The binder portion 31b may have a structure integrated with the adhesive layer 30c. Due to the binder portion 31c, the air layer 29c can maintain its space against the weight of people and vehicles that come and go on the road surface decorative sheet.

The retroreflective member 12c contains thermoplastic resin such as polycarbonate or acrylic resin, for example. As the retroreflecting member 12c, for example, a corner cube having a triangular pyramid shape may be used, or a retroreflecting member called a full cube may be used instead of the corner cube. These corner cubes and full cubes are produced, for example, by molding using a mold. The triangular pyramid shape of the retroreflective member 12c is a member for retroreflecting light from the outside of the road surface decorative sheet. Since the retroreflective layer 23c has the air layer 29c between the retroreflective member 12c and the intermediate layer 32c, the retroreflective member 12c can be totally reflected by the air layer 29c. After passing through the ink-receiving layer 24c, light from the outside is reflected by the retroreflective member 12c, passes through the ink-receiving layer 24c again, and is retro-reflected to the outside. A reflective deposition layer containing a metal such as aluminum may be provided on the lower side 12f of the retroreflective member 12c, if necessary.

FIG. 9(a) is a diagram schematically showing a cross section of a precursor of a graphic construction according to an embodiment. The graphic construction precursor 50 comprises a backing film layer 52 and a pre-design layer 54 . The backing film layer 52 includes, for example, a base film layer 52a and an adhesive layer 52b, and the pre-design layer 54 includes a support layer 54a and an ink receiving layer 54b. The adhesive layer 52b is provided, for example, between the base film layer 52a and the support layer 54a. Backing film layer 52 is releasably adhered to support layer 54a by adhesive layer 52b.

According to this precursor 50, since it has the backing film layer 52, it has high shape stability during printing by an inkjet printer or the like, and characters, graphics, etc. can be clearly printed on the pre-design layer 54. FIG. In addition, since the backing film layer 52 can be easily peeled off from the design layer 54p that is produced by printing the pre-design layer 54, the design layer 54p can be easily placed on the road surface 5 after the backing film layer 52 is removed. can be installed.

Also, the precursor 50 may have a bending resistance of greater than 320 mgf, and may have a bending resistance of 400 mgf or greater. The upper limit of the bending resistance of the precursor 50 can be arbitrarily set depending on the material used. may The adhesive layer 52b of the backing film layer 52 may have an adhesive strength of less than 0.5 N/25 mm, and may have an adhesive strength of 0.2 N/25 mm or less. The lower limit of the adhesive strength of the adhesive layer 52b can be arbitrarily set depending on the material used. may have

According to the precursor 50 of this graphic construction, since it has a bending resistance of more than 320 mgf, the shape of the sheet is stable even during printing, and the sheet can be conveyed smoothly. Moreover, since the precursor 50 may have a bending resistance exceeding 400 mgf, it can be transported more smoothly during printing. Since the adhesive layer 52b of the backing film layer 52 has an adhesive force of less than 0.5 N/25 mm, after applying characters, figures, etc. to the pre-design layer 54, the printed precursor 50p (Fig. 9(b) ), the backing film layer 52 can be easily peeled off. The pre-design layer 54 can be easily installed on the road surface 5 using an adhesive or the like after the backing film layer 52 is removed. In addition, the adhesive layer 52b of the backing film layer 52 may have an adhesive strength of 0.2 N/25 mm or less. The backing film layer 52 can be more easily peeled off from 50p.

The base film layer 52a includes various sheets such as PET film, paper, vinyl chloride film, PP film, or PE film, for example. The thickness of the base film layer 52a may be any thickness that can realize the precursor 50 having a bending resistance exceeding 320 mgf. It can also be 400 μm or less, 300 μm or less, or 200 μm or less.

The adhesive layer 52b includes, for example, an acrylic adhesive, a rubber-based adhesive, a silicone-based adhesive, or an acrylic foam agent, and may further include adhesive fine particles. When the adhesive fine particles are contained, the adhesive surface is formed with an uneven surface, so that the air release property is excellent when the adhesive surface is adhered to the base film layer 52a. Further, since the contact area with the base film layer 52a is small, it is easy to lower the adhesive force. The adhesion of the acrylic pressure-sensitive adhesive can be easily controlled by changing the amount of curing agent added and the coating weight. For example, in order to reduce the adhesive strength, it is preferable to increase the curing agent and reduce the coating weight. The coating weight of the adhesive layer 52b can be, for example, 100 g/m ² or less, 40 g/m ² or less, or 30 g/m ² or less, or 5 g/m ² or more, 6 g/m ² or more, or 7 g /m ² or more.

Since this precursor 50 includes the base film layer 52a, it has shape stability and excellent transportability during printing.

The support layer 54a contains metal foil, such as aluminum or an aluminum alloy, for example. The thickness of the support layer 54a is, for example, 20 μm to 200 μm.

The ink receiving layer 54b has, for example, a resin film or sheet containing a white pigment. White adhesives include, for example, films or sheets made of acrylic polymers, urethane polymers, polyesters such as polyethylene terephthalate (PET), polyvinyl chloride, polyolefins such as polyethylene and polypropylene (PP), or fluoropolymers. The thickness of the ink receiving layer 54b can be, for example, 3 μm to 500 μm, and can also be 5 μm to 300 μm.

(b) of FIG. 9 is a diagram schematically showing a cross section of a printed precursor on which a design layer is formed according to the embodiment. In contrast to the pre-printed precursor 50, the printed precursor is hereinafter referred to as printed precursor 50p. Formation of the ink layer 54c on the ink-receiving layer 54b of the precursor 50 is performed, for example, by introducing the precursor 50 into an inkjet printer and performing the printing process of the printer. Precursor 50 can be inkjet printed in an inkjet printer, for example supported on holder 56 . After forming the ink layer 54c, the design layer 54p includes the support layer 54a, the ink receiving layer 54b, and the ink layer 54c. Printed precursor 50p includes backing film layer 52 and design layer 54p. In this embodiment, since the precursor 50 has the backing film layer 52, the shape stability is high when printing with an inkjet printer or the like, and characters, figures, etc. are printed on the pre-design layer 54 simply and clearly. 54p can be made.

FIG. 9(c) is a diagram schematically showing a cross section of the graphic construction sheet according to the embodiment. Graphic construction sheet 58 represents design layer 54p that has been substantially freed from printed precursor 50p by peeling backing film layer 52 therefrom. In this embodiment, after the printed precursor 50p is taken out of the inkjet printer, the backing film layer 52 can be easily peeled off from the printed precursor 50p by hand, for example. Removal of backing film layer 52 completes the manufacture of graphic construction sheet 58 . In this embodiment, the backing film layer 52 can be easily peeled off from the printed precursor 50p after the pre-design layer 54 is printed with characters, figures, etc., and the graphic construction sheet 58 is formed by, for example, the adhesive layer 30. It can be easily installed on the road surface 5 by interposing.

FIG. 10 is a flow diagram illustrating a method of manufacturing a graphic construction sheet according to another embodiment. In the manufacturing method MT2 of the graphic construction sheet 58, first, the graphic construction precursor 50 is prepared (step STa). A cross-sectional view of the product manufactured by this process corresponds to the cross-sectional view of FIG. 9(a). The graphic construction precursor 50 has at least an ink-receiving layer 54b, a support layer 54a, and a backing film layer 52, in that order. The backing film layer 52 includes an adhesive layer 52b.

Subsequently, using the precursor 50 prepared in step STa, printing is performed on the ink receiving layer 54b to form the design layer 54p (step STb). A cross-sectional view of the product manufactured by this process corresponds to the cross-sectional view of FIG. 9(b). Precursor 50 is transported, for example, into a printer, and then printed on ink-receiving layer 54b of precursor 50 to produce printed precursor 50p. Printed precursor 50p includes design layer 54p.

In manufacturing method MT2, subsequently, backing film layer 52 is peeled off from printed precursor 50p on which design layer 54p is formed (step STc). A cross-sectional view of the product manufactured by this process corresponds to the cross-sectional view of FIG. 9(c). The peeling of the backing film layer 52 can be performed manually, for example. After the backing film layer 52 is stripped from the printed precursor 50p, the fabrication of the graphic construction sheet 58 is complete. The graphic construction sheet 58 can be placed on the road surface 5 using the adhesive layer 30, for example.

According to this graphic construction sheet manufacturing method MT2, the design layer 54p can be formed by printing on the ink receiving layer 54b using the graphic construction precursor 50, for example, by a printer in the factory. After the design layer 54p is formed, the printed precursor 50p including the design layer 54p after printing is conveyed to the road surface 5 where people and vehicles come and go, and the backing film layer 52 is peeled off from the printed precursor 50p to form a graphic structure. After the sheet 58 is removed, the graphic construction sheet 58 can be conveniently placed on the road surface 5 .

Hereinafter, the road surface decorative sheet will be further described with reference to examples and comparative examples of the present invention. The invention is not limited to the following examples.

In the examples, the materials shown in Tables 1 and 2 were used. The abbreviations in Tables 1 and 2 mean the following compounds.
MMA: methyl methacrylate BMA: butyl methacrylate DMAEMA: dimethylaminoethyl methacrylate BA: n-butyl acrylate AA: acrylic acid

(Example 1)
[Preparation of graphic construct]
(Preparation of ink-receiving layer)
First, a premix for the ink receiving layer was prepared. A premix solution was prepared by dissolving the pigment PIG1 and the acrylic polymer AP1 in the solvent methyl isobutyl ketone (MIBK). In the premix solution, the resin solid content ratio of the pigment PIG1 and the acrylic polymer AP1 was set to 5:1, and the resin solid content ratio in the premix for the ink-receiving layer was set to 66%.

Subsequently, acrylic polymer AP1, acrylic polymer AP2, and tackifier TF1 were added to the premixed solution to prepare an ink-receiving layer solution. In the solution for the ink-receiving layer, the resin solid content ratio of the acrylic polymer AP1 and the acrylic polymer AP2 was 120:100, and the resin solid content ratio of the tackifier TF1, the acrylic polymer AP1 and the acrylic polymer AP2 was 25:100. and Further, the resin solid content ratio of the pigment PIG1, the acrylic polymer AP1 and the acrylic polymer AP2 was set to 20:100.

Subsequently, the ink-receiving layer solution was applied onto the silicone-treated polyester film by a knife coating method. The thickness of the polyester film was 50 μm. The ink-receiving layer solution on the polyester sheet was dried at a temperature of 95° C. for 5 minutes and further dried at a temperature of 155° C. for 3 minutes to form an ink-receiving layer on the polyester sheet. The thickness of the prepared ink-receiving layer was 80 μm.

Subsequently, an aluminum foil (aluminum foil) having a thickness of 50 μm was prepared as a support layer for supporting the ink receiving layer. The ink-receiving layer was laminated to the aluminum foil through one side of the ink-receiving layer located on the opposite side of the polyester film. The lamination was performed by a heat laminator method. The roll temperature of the laminator was 90°C. The thickness of the ink-receiving layer supported on the aluminum foil was 80 μm. The polyester film on the ink-receiving layer was removed at the time of lamination by the heat laminator method.

(Preparation of ink layer)
An ink layer was formed on the other side of the ink-receiving layer located opposite the support layer. A UV inkjet printer UJV500 (manufactured by Mimaki Co., Ltd.) was used to form the ink layer. In this example, the ink-receiving layer was formed by applying a blue ink onto the other surface of the ink-receiving layer. Blue ink was applied to almost all areas on the other side of the ink-receiving layer.

(Preparation of adhesive layer)
Subsequently, an adhesive for commercial parking graphics, CPG Adhesive I (manufactured by 3M) was prepared as an adhesive layer. The adhesive CPG Adhesive I was applied to the underside of a support layer of aluminum foil to create a graphic construction with an adhesive layer. The adhesive layer was applied to the support layer using a commercially available paint roller, and the applied adhesive layer was dried at room temperature for 10 minutes. Formation of the adhesive layer produced a graphic construction for a road decorative sheet.

(Installation of graphic constructs on the road surface)
In this example, the graphic construction was placed on a permeable asphalt road surface. Prior to installation of the graphic construction, the adhesive CPG Adhesive I was applied as a road bonding layer onto the water-permeable asphalt and allowed to dry. The graphic construction with the adhesive layer was applied to water permeable asphalt coated with the adhesive CPG Adhesive I. The application was done by hitting the graphic construction with a rubber hammer. The graphic structure was attached so as to follow the depressions and protrusions of the permeable asphalt.

(Preparation of urethane resin)
A mixture for a urethane resin was prepared by mixing a polyester polyol large area ESGA agent (manufactured by Altec) and a polyisocyanate large area ESG B agent (manufactured by Altec). The large area ESGA agent was 100 g, and the large area ESG B agent was 50 g. The admixture was agitated with a spatula and the agitated admixture was applied on top of the graphic construction to form a surface coat layer. The mixture is applied with a commercially available paint roller, and the mixture is applied on the surface of the graphic construction and also on the periphery of the graphic construction, i.e., on the water-permeable asphalt on which the graphic construction is not installed. was done. The coating amount of the mixture was 407 g/m ² . The thickness of the surface coat layer on the surface of the graphic construction was approximately 1 mm.

(Production of retroreflective member)
After application onto the water-permeable asphalt, the surface coat layer was provided with a retroreflective member. Retroreflective beads NB-153 (manufactured by Gakunan Koki Co., Ltd.) were sprayed on the upper end of the surface coat layer. Retroreflective beads NB-153 are glass beads having a particle size of 106 to 850 μm specified in JIS R3301 No.1. The refractive index of the glass beads was 1.50-1.64 and the spread rate was 160 g/m ² . Glass beads were dispersed substantially uniformly over the surface coat layer. The surface coat layer was cured at room temperature overnight after the glass beads were dispersed. After curing the surface coat layer, the application of the road surface decorative sheet according to Example 1 onto the water-permeable asphalt was completed. The road surface decorative sheet according to Example 1 has a width of 250 mm, a length of 250 mm, and a thickness of 0.25 mm. In addition, in Example 1, a decorative sheet for road surface applied on concrete was further prepared.

(Whitening impact test)
A whitening impact test was conducted to confirm the construction characteristics of the road surface decorative sheet on water-permeable asphalt. The road surface decorative sheet on the water-permeable asphalt was lightly tapped 100 times with a hammer having a bolt-shaped head, and the presence or absence of whitening of the sheet due to peeling between the surface coat layer and the ink layer was visually confirmed. The weight of the hammer head was 0.123 kg.

(Retroreflective performance test)
Retroreflective performance was measured using a reflective luminance meter MIROLUX7 (manufactured by Potters-Ballotini). The reflective luminance meter had a light projector and a light receiver, and emitted light from the light projector toward the surface coat layer of the road surface decorative sheet. This irradiation light was retroreflected by the retroreflective beads of the surface coat layer and entered the light receiver. In this example, the reflection luminance (mcd/lx/m ² ) was estimated from the amount of light incident on the light receiver. In the retroreflection performance test, a road surface decorative sheet placed on concrete was used.

(Anti-slip performance test)
Using a testing machine British Pendulum Tester (manufactured by MUNRO Instrument), the anti-slip performance was measured in a state in which water was sufficiently sprayed on the road surface decorative sheet. The anti-slip performance (BPN) was estimated by measuring the frictional resistance between the sliding piece attached to the tip of the pendulum of the testing machine and the surface coating layer of the road surface decorative sheet. This estimate was made in accordance with regulation ASTM E303-93 (2013). In the anti-slip performance test, a road surface decorative sheet placed on concrete was used.

(Surface strength test)
A knife-shaped probe was pressed against the road surface decorative sheet, and the force applied to the probe was measured until the design layer of the road surface decorative sheet was damaged. The maximum value (N) of the force applied to the probe was read with a digital force gauge. The probe had a sharp tip cut in a V shape, and the V-shaped opening of the tip was 60 degrees. In the surface strength test, water-permeable asphalt (a road surface decorative sheet placed on top of it was used.

(Stationary steering test)
A car tire was placed on the central part of the road surface decoration sheet, and the tire was rotated on the road surface decoration sheet to reproduce the same operation as stationary steering. Tires were Sneaket 215/65/R16 (manufactured by Bridgestone). The load applied to the road surface decorative sheet was 5 kN. The tire was rotated 40 degrees clockwise from the direction of the starting point and returned to the direction of the starting point. This operation was defined as one cycle. Subsequently, the tire was rotated 40 degrees counterclockwise from the direction of the starting point and returned to the direction of the starting point, which was regarded as 2 cycles. Subsequently, the same operation as in the 1st cycle was performed to complete the 3rd cycle. After that, the same operation was repeated. After carrying out 150 cycles, the state of damage to the design layer of the road surface decorative sheet was visually observed. The ratio of the area damaged by stationary cutting to the area of the road surface decorative sheet in contact with the tire was estimated.

(edge test)
A concrete plate having a length of 300 mm square was prepared, and two decorative sheets for road surface were put side by side on the concrete plate. The size of the road surface decorative sheet was 100 mm in width and 270 mm in length. The two road surface decorative sheets were installed with an interval of about 30 mm. As in the stationary steering test, a car tire was placed on the decorative road surface sheet and the tire was rotated. The tire was installed so as to be positioned between the two road surface decorative sheets. As in the stationary cutting test, the ratio (%) of the area peeled off by stationary cutting among the areas (54,000 mm ² ) of the two road surface decorative sheets was estimated after the tires were rotated for 150 cycles.

(Example 2)
In Example 2, a road surface decorative sheet having the same structure as in Example 1 was produced, except that the design layer had the following ink-receiving layer.

[Preparation of graphic construct]
(Preparation of ink-receiving layer)
As the ink-receiving layer, a film without an adhesive layer of Scotchcal ^™ graphic film RG5333R (manufactured by 3M) was prepared. This film is a cast film containing polyvinyl chloride and is a flexible film transparent in the visible range. The film thickness was 50 μm. In this example, an ink layer was formed on this film. A UV inkjet printer UJV500 (manufactured by Mimaki Co., Ltd.) was used to form the ink layer. An ink layer was formed by applying a blue ink onto the graphic film RG5333R. Blue ink was applied to almost all areas on the film. An ink-receiving layer according to Example 2 was produced by forming an ink layer on this film.

(Installation of ink-receiving layer)
Subsequently, as in Example 1, an ink-receiving layer was mounted on the support layer. The mounting of this ink-receiving layer was performed by a thermal lamination method. The temperature of the roller during lamination was 130°C. After lamination, the support layer with the ink-receiving layer was placed in an oven at a temperature of 95°C for 40 minutes. After removal from the oven, an adhesive layer was formed in the same manner as in Example 1, and a graphic construction according to Example 2 was produced.

(Installation of graphic constructs on the road surface)
Subsequently, in the same manner as in Example 1, a graphic construction was placed on water-permeable asphalt, and a surface coat layer was provided on the surface of the graphic construction. Further, in the same manner as in Example 1, a retroreflective member was produced, and the installation of the road surface decorative sheet according to Example 2 on water-permeable asphalt was completed. The size of the road surface decorative sheet according to Example 2 was the same as the size of the road surface decorative sheet according to Example 1, and a road surface decorative sheet applied on concrete was further prepared in the same manner as in Example 1. . In Example 2, similarly to Example 1, a whitening impact test, a retroreflection performance test, an anti-slip performance test, a surface strength test, and a stationary cutting test were conducted.

(Example 3)
In Example 3, a road surface decorative sheet having the same structure as in Example 2 except that the material contained in the ink-receiving layer according to Example 2 was changed was produced.

(Preparation of ink-receiving layer)
In Example 3, a flexible acrylic cast film was produced as the film for the ink receiving layer by the following production procedure. That is, first, acrylic polymer AP1, acrylic polymer AP3, and cross-linking agent CL1 were mixed so that the solid content ratio of each was 100:110:0.22. A TK auto homomixer (manufactured by Primix) was used for mixing. Subsequently, the mixed ink-receiving layer solution was applied onto a silicone-treated polyester film by a knife coating method. The thickness of the polyester film was 50 μm. The ink-receiving layer solution on the polyester sheet was dried at 95° C. for 5 minutes, and further dried at 155° C. for 2 minutes to form an ink-receiving layer on the polyester sheet. The thickness of the prepared ink-receiving layer was 50 μm.

In Example 3, similarly to Example 1, a whitening impact test, a retroreflection performance test, an anti-slip performance test, a surface strength test, and a stationary cutting test were conducted.

(Comparative example 1)
In Comparative Example 1, Scotchcal ^TM paint film CPG-II (manufactured by 3M) was prepared as a road surface decorative sheet. Blue printing was applied to the ink-receiving layer of this paint film CPG-II. For the adhesive layer, commercial parking graphics adhesive CPG Adhesive I (hereinafter referred to as "adhesive CPG Adhesive I") used in Scotchcal ^™ paint film CPG-II (manufactured by 3M) was prepared. In this comparative example 1, the surface coat layer has a surface layer having an anti-slip member including a bead coat in advance along with the design layer and the adhesive layer, and unlike the example, no urethane resin coating layer is formed.

In Comparative Example 1, the decorative sheet for road surface was placed on water-permeable asphalt and concrete in the same manner as the graphic structure of the example.

In Comparative Example 1, similarly to Example 1, a whitening impact test, a retroreflection performance test, an anti-slip performance test, a surface strength test, a stationary cutting test, and an edge test were performed. In the edge test, the tires were rotated for up to 5 cycles.

Table 3 shows the configurations and test results of the road surface decorative sheets according to Examples 1 to 3 and Comparative Example 1. The item of test results in Table 3 shows the evaluation results of the whitening impact test, the retroreflection performance test, the anti-slip performance test, the surface strength test, the stationary cutting test, and the edge test.

In Table 3, in the item of the whitening impact test, as a result of observing the presence or absence of whitening, it was evaluated as "A (accepted)" when whitening was not observed, and "B (failed)" when whitening was observed. ” was evaluated. In the item of surface strength test, for example, ">76.5" indicates that the surface strength test is 76.5 (N) or more. In the stationary cutting test, as a result of the estimation, when the percentage of the damaged area is less than 10%, it is evaluated as "A (accepted)", and when the percentage of the damaged area is 10% or more, it is evaluated as "B (failed)" )” was evaluated.

(Example 4)
In Example 4, a road surface decorative sheet having the same structure as in Example 1 was produced, except that an anti-slip member was provided on the surface coat layer. Example 4 provides an anti-slip member on the graphic construction for the roadside decorative sheet. A Scotchcal ^TM paint film CPG-II (manufactured by 3M) was prepared as a graphic structure provided with this anti-slip member. This paint film CPG-II was not printed.

(Preparation of adhesive layer)
Subsequently, an adhesive CPG Adhesive I (manufactured by 3M) was prepared as an adhesive layer. The adhesive CPG Adhesive I was applied to the underside of the aluminum foil backing layer of paint film CPG-II to produce a graphic construction with an adhesive layer. The adhesive layer was applied to the support layer using a commercially available paint roller, and the applied adhesive layer was dried at room temperature for 10 minutes.

In this example, the graphic construction was placed on concrete. Prior to installation of the graphic construction, the adhesive CPG Adhesive I was applied to the concrete as a road bonding layer and allowed to dry. A graphic construction with an adhesive layer was applied to concrete coated with the adhesive CPG Adhesive I. The application was done by hitting the graphic construction with a rubber hammer.

(Preparation of surface coat layer)
A mixture for a urethane resin was prepared by mixing a polyester polyol large area ESGA agent (manufactured by Altec) and a polyisocyanate large area ESG B agent (manufactured by Altec). The large area ESGA agent was 100 g, and the large area ESG B agent was 50 g. The admixture was agitated with a spatula and the agitated admixture was applied onto the surface of the graphic construction to form a surface coat layer. The mixture is applied with a commercially available paint roller, and the mixture is applied on the surface of the graphic construction and also on the periphery of the graphic construction, i.e., on the water-permeable asphalt on which the graphic construction is not installed. was done. The coating amount of the mixture was 180 g/m ² . The thickness of the surface coat layer on the surface of the graphic construction (paint film CPG-II) was approximately 1 mm.

(Production of retroreflective member)
As in Example 1, the surface coat layer was provided with a retroreflective member. Retroreflective beads NB-153 (manufactured by Gakunan Koki Co., Ltd.) were sprayed on the upper end of the surface coat layer. Retroreflective beads NB-153 are glass beads having a particle size of 106 to 850 μm specified by JISR3301 No.1. The refractive index of the glass beads was 1.50-1.64 and the spread rate was 160 g/m ² . The glass beads were evenly distributed over the top of the surface coat layer. The surface coat layer was cured at room temperature overnight after the glass beads were dispersed. After curing the surface coat layer, the application of the road surface decorative sheet according to Example 1 onto the water-permeable asphalt was completed.

In Example 4, a retroreflective performance test and an anti-slip performance test were performed under the same conditions as in Example 1.

(Example 5)
In Example 5, a road surface decorative sheet having the same configuration as in Example 4 was produced, except that the retroreflective member was changed. Glass beads HGB-153 (manufactured by Potters-Ballotini) were used as retroreflective beads. The particle size of the glass beads was 106-850 μm. The refractive index of the glass beads was 1.9 and the spread rate was 160 g/m ² . In Example 5, in the same manner as in Example 4, a retroreflective performance test and an anti-slip performance test were performed.

(Example 6)
In Example 6, a road surface decorative sheet having the same configuration as in Example 4 was produced, except that the retroreflective member was changed. White silica 20-40 mesh product (manufactured by Yamamori Tsuchimoto Mining Co., Ltd.) was used as the retroreflective beads. The particle size of white silica was 0.4 to 0.8 mm, and the amount of white silica applied was 80 g/m ² . In Example 6, in the same manner as in Example 4, a retroreflective performance test and an anti-slip performance test were performed.

(Example 7)
In Example 7, a road surface decorative sheet having the same configuration as in Example 4 was produced, except that the retroreflective member was changed. As retroreflective beads, white silica 20-40 mesh product (manufactured by Yamamori Tsuchimoto Mining Co., Ltd.) and retroreflective sand core element R-SCERI 2.2-2.4 (manufactured by 3M) were used. The weight ratio of white silica to retroreflective sand core elements was 50:50. The particle size of the white silica was 0.4-0.8 mm, and the particle size of the sand core element was 0.6-1.7 mm. The application rates of white silica and sand core elements were both 80 g/m ² . In Example 7, in the same manner as in Example 4, a retroreflective performance test and an anti-slip performance test were performed.

(Example 8)
In Example 8, a road surface decorative sheet having the same configuration as in Example 4 was produced, except that the retroreflective member was changed. As retroreflective beads, white silica 20-40 mesh product (manufactured by Yamamori Tsuchimoto Mining Co., Ltd.) and glass beads HGB-153 (manufactured by Potters-Ballotini) were used. The weight ratio of white silica and glass beads was 50:50. The particle size of the white silica was 0.4-0.8 mm, and the particle size of the glass beads was 106-850 μm. The amount of white silica and glass beads applied was both 80 g/m ² . In Example 8, in the same manner as in Example 4, a retroreflective performance test and an anti-slip performance test were performed.

(Comparative example 2)
In Comparative Example 2, Scotchcal ^™ paint film CPG-II (manufactured by 3M) was prepared as a road surface decorative sheet. This paint film CPG-II was not printed. An adhesive CPG Adhesive I was prepared as an adhesive layer.

Table 4 shows the configurations and test results of the road surface decorative sheets according to Examples 4 to 6, and Table 5 shows the configurations and test results of the road surface decorative sheets according to Examples 7 and 8 and Comparative Example 2. . The test result items in Tables 4 and 5 show the evaluation results of the retroreflective performance test and the anti-slip performance test. In Tables 6 and 7, the notation "CPG-I" in the items of the construction of the road surface decorative sheet (anti-slip member, ink-receiving layer, and support layer) stands for Scotchcal ^TM paint film CPG-I (manufactured by 3M). ) is used.

The road surface decorative sheet will be further described below with reference to Examples 9 to 11 and Comparative Examples 3 to 5 of the present invention. In Examples 9 to 11 and Comparative Examples 3 to 5, retroreflective performance was not evaluated, so no retroreflective member was provided. The invention is not limited to the following examples.

(Example 9)
In Example 9, first, Staymark ^TM Primer P-48 (manufactured by Thruem) was applied on the concrete as a road surface bonding layer. A paint roller was used to apply the road surface bonding layer, and after the road surface bonding layer was applied, it was dried at room temperature for 10 minutes. Subsequently, a sidewalk film (Scotchcal ^™ graphic film, manufactured by 3M) was prepared as a graphic component, and the sidewalk film was pasted on the concrete coated with the road surface bonding layer. This application was performed by hitting the sidewalk film with a rubber hammer. A sidewalk film essentially has an anti-slip member, an ink-receiving layer, and a support layer.

(Preparation of surface coat layer)
A surface coat layer was formed under the same conditions as in Example 1. A mixture for a urethane resin was prepared by mixing a polyester polyol large area ESGA agent (manufactured by Altec) and a polyisocyanate large area ESG B agent (manufactured by Altec). The large area ESGA agent was 100 g, and the large area ESG B agent was 50 g. The admixture was agitated with a spatula and the agitated admixture was applied onto the surface of the graphic construction to form a surface coat layer. The mixture is applied with a commercially available paint roller, and the mixture is applied on the surface of the graphic construction and also on the periphery of the graphic construction, i.e., on the water-permeable asphalt on which the graphic construction is not installed. was done. The coating amount of the mixture was 180 g/m ² . The thickness of the surface coat layer on the surface of the graphic construction (sidewalk film) was approximately 1 mm.

In Example 9, a surface strength test and a stationary cutting test were performed under the same conditions as in Example 1. In the stationary steering test, the tires were rotated for up to 15 cycles.

(Example 10)
In Example 10, a road surface decorative sheet was placed on concrete in the same manner as in Example 9, except that a hybrid sidewalk film (Scotchcal ^™ graphic film, manufactured by 3M) was used as the graphic component. A hybrid sidewalk film essentially has an antiskid member, an ink-receiving layer, and a support layer. In Example 10, similarly to Example 9, a surface strength test and a stationary cutting test were performed. In the stationary steering test, the tires were rotated for up to 15 cycles.

(Example 11)
In Example 11, Primer DP-900N3 (manufactured by 3M) was used as the road surface bonding layer, and Scotchcal ^TM paint film CPG-I (manufactured by 3M) was used as the graphic constituent. 9, a decorative sheet for road surface was placed on concrete. Scotchcal ^™ Paint Film CPG-I essentially has an antiskid member, an ink-receiving layer, and a support layer. In Example 11, similarly to Example 9, a surface strength test and a stationary cutting test were performed. In the stationary steering test, the tires were rotated for up to 15 cycles.

(Comparative Example 3)
In Comparative Example 3, a road surface decorative sheet was placed on concrete in the same manner as in Example 9, except that no surface coat layer was provided. In Comparative Example 3, a surface strength test and a stationary cutting test were performed in the same manner as in Example 9. In the stationary steering test, the tires were rotated for up to 5 cycles.

(Comparative Example 4)
In Comparative Example 4, a road surface decorative sheet was placed on concrete in the same manner as in Example 10, except that no surface coat layer was provided. In Comparative Example 4, similarly to Example 9, a surface strength test and a stationary cutting test were performed. In the stationary steering test, the tires were rotated for up to 5 cycles.

(Comparative Example 5)
In Comparative Example 5, a road surface decorative sheet was placed on concrete in the same manner as in Example 11, except that no surface coat layer was provided. In Comparative Example 5, a surface strength test and a stationary cutting test were performed in the same manner as in Example 9. In the stationary steering test, the tires were rotated for up to 5 cycles.

Table 6 shows the configurations and test results of road surface decorative sheets according to Examples 9-11, and Table 7 shows the configurations and test results of road surface decorative sheets according to Comparative Examples 3-5. The test result items in Tables 6 and 7 show the evaluation results of the surface strength test and the stationary cutting test [on concrete].

In Tables 6 and 7, in the items of the construction of the road surface decorative sheet (anti-slip member, ink-receiving layer, and support layer), the notations "sidewalk", "hybrid sidewalk" and "CPG-I" It means that, among the materials contained in the walk, etc., materials corresponding to each of the anti-slip member, the ink receiving layer, and the support layer are used. In the stationary cutting test, when the road surface decorative sheet did not peel off from the concrete, it was evaluated as "A (accepted)", and when the road surface decorative sheet peeled off from the concrete, it was evaluated as "B (failed)". and evaluated.

Hereinafter, the road surface decorative sheet will be further described with reference to Examples 12 and 13 of the present invention. The invention is not limited to the following examples.

(Example 12)
(Preparation of design layer)
First, a transparent vinyl chloride sheet for JS1900 (manufactured by 3M) having a thickness of 50 μm was prepared on presized paper. Then, a presized paper was slurry-coated with a butanol solution of a mixture of acrylic resin (32% by mass) and retroreflective glass beads (68% by mass). Elvacite 2044 (manufactured by Lucite Japan) was used as the acrylic resin, and 5318 3635 Bead TILLOY (manufactured by 3M) was used as the retroreflective glass beads. Retroreflective beads are glass beads with a particle size of 44-62 μm. The refractive index of the glass beads was 2.1-2.3, and the content in the acrylic resin was 126 g/m ² . The glass beads were dispersed substantially uniformly within the acrylic resin. After the slurry coating, the presized paper was dried at a temperature of 65° C. for 5 minutes, followed by drying at a temperature of 95° C. for 3 minutes to form a slurry coat layer. The slurry coat layer is a layer for an intermediate resin layer surrounding the retroreflective member with resin. The thickness of the slurry coat layer was 120 μm.

Next, using a vapor deposition apparatus EX200 (manufactured by ULVAC), a reflective vapor deposition layer made of an aluminum vapor deposition layer was formed on the slurry coat layer. In this example, the thickness of the reflective deposition layer was about 100 nm. After vapor deposition of aluminum, the slurry coat layer with the reflective vapor deposition layer was cut into a size of 190 mm×250 mm.

Next, an ink layer was formed on the ink receiving layer. A UV inkjet printer UJV500 (manufactured by Mimaki Co., Ltd.) was used to form the ink layer. An ink layer was formed by applying LUS-200 ink (manufactured by Mimaki Co., Ltd.) on the surface of the JS1900 vinyl chloride transparent sheet from which the presized paper was removed. The ink was applied to almost all areas on the film. A design layer according to this example was produced by forming an ink layer on this film.

(Preparation of graphic construct)
An adhesive CPG-Adhesive I (manufactured by 3M) was prepared as an adhesive layer. Subsequently, an adhesive CPG-Adhesive I (manufactured by 3M) was similarly applied to the lower surface of the reflective deposition layer. The adhesive layer was applied to the reflective deposition layer using a commercially available paint roller, and the applied adhesive layer was dried at room temperature for 10 minutes. Formation of the adhesive layer produced a graphic construction for a road decorative sheet.

(Installation of graphic constructs on the road surface)
In this example, the graphic construction was divided into two sheets each having a size of 95 mm×250 mm, and the two divided graphic constructions were placed on a concrete plate. The size of the concrete plate was 300 mm×300 mm×50 mm. Prior to installing the graphic construction, the adhesive CPG-Adhesive I was applied onto the concrete board and then allowed to dry at room temperature for 10 minutes to create a road bonding layer. A hand roller was used to apply the adhesive CPG-Adhesive I. The area of the road surface bonding layer was 105 mm×260 mm. Subsequently, the graphic construction provided with the adhesive layer was applied onto the concrete slab provided with the road bonding layer. The application was done by hitting the graphic construction with a rubber hammer. The graphic structure was attached so as to follow the recesses and protrusions of the concrete plate.

(Preparation of surface coat layer)
A mixture for a urethane resin was prepared by mixing a polyester polyol large area ESGA agent (manufactured by Altec) and a polyisocyanate large area ESG B agent (manufactured by Altec). The large area ESGA agent was 100 g, and the large area ESG B agent was 50 g. The admixture was agitated with a spatula and the agitated admixture was applied on top of the graphic construction to form a surface coat layer. The application of the admixture is carried out by a commercially available paint roller, and the admixture is applied on the surface of the graphic construction and also on the periphery of the graphic construction, i.e. on the concrete slab where the graphic construction is not installed. Ta. The coating amount of the mixture was 310 g/m ² . The thickness of the surface coat layer on the surface of the graphic construction was approximately 1 mm. The surface coat layer was also formed on the concrete plate exposed around the graphic structure, and the width of the surface coat layer on the concrete plate was, for example, about 5 mm. Preparation of the surface coat layer was completed after leaving overnight at room temperature after applying the mixture. The preparation of the surface coating layer completed the preparation of the road surface decorative sheet of this example.

(Graphic image observation)
A graphic image was observed on the road surface decorative sheet. Specifically, using a smartphone iPhone 7 (registered trademark, manufactured by Apple Inc.), while irradiating the flash light of the smartphone at an incident angle of about 30 degrees, the inkjet graphic image drawn on the design layer of the road surface decorative sheet was transferred to the smartphone. Taken with As a result of photographing, when a bright graphic image was obtained, it was evaluated as "good (A)", and when a dull graphic image was obtained, it was evaluated as "bad (B)".

(Retroreflective performance test)
The road surface decorative sheet was attached to an aluminum plate, and the retroreflective performance was tested. The size of the aluminum plate was 210 mm×150 mm×0.5 mm. The measurement of the retroreflective performance was based on JISZ9117, and the reflection brightness (cd/lx/m ² ) was estimated. The road surface decorative sheet was not subjected to inkjet printing.

(Stationary steering test)
A road surface decorative sheet was provided on a concrete material, and a car tire was placed on the central portion of the road surface decorative sheet. Next, the tire was rotated on the decorative road surface sheet to reproduce the same operation as stationary steering. The tire was NEXTRY215/65R16 98H (manufactured by Bridgestone). The load applied to the road surface decorative sheet was 5 kN. The tire was rotated 40 degrees clockwise from the direction of the starting point and returned to the direction of the starting point. This operation was defined as one cycle. Subsequently, the tire was rotated 40 degrees counterclockwise from the direction of the starting point and returned to the direction of the starting point, which was regarded as 2 cycles. Subsequently, the same operation as in the 1st cycle was performed to complete the 3rd cycle. After that, the same operation was repeated. Every 10 cycles, the state of damage to the graphics on the road surface decorative sheet was visually observed. The ratio of the area damaged by stationary cutting to the area of the road surface decorative sheet in contact with the tire was estimated. After 300 cycles, when the percentage of the damaged area was less than 10%, it was rated as "good (A)", and when the percentage of the damaged area was 10% or more, it was rated as "bad (B)".

(Example 13)
In this example, a road surface decorative sheet having the same configuration as in Example 1 was produced, except for the production of the urethane resin and the retroreflective member. In this example, the coating amount of the mixture was set to 310 g/m ² in the preparation of the urethane resin, and the spray amount of the glass beads was set to 152 g/m ² in the preparation of the retroreflective member. Moreover, in this example, unlike Example 1, the decorative sheet for road surface was installed on the concrete having a size of 300 mm×300 mm×50 mm.

(a) of FIG. 11 shows the measurement results of retroreflection performance according to Example 12, and (b) of FIG. 11 shows the measurement results of retroreflection performance according to Example 13. FIG. These figures show the relationship between the incident angle (deg, degree) and the reflection luminance (cd/lx/m ² ), and the observation angle is between 0.20 (deg) and 3.00 (deg). are changing. In Example 12, the reflected luminance increased as the observation angle increased from 3.00 (deg) to 0.20 (deg). In Example 13, even when the observation angle was increased from 3.00 (deg) to 0.20 (deg), the reflected luminance showed a substantially constant value.

Table 8 shows the configurations and test results of the road surface decorative sheets according to Examples 12 and 13. In the graphic image observation and the retroreflective performance test, both Examples 12 and 13 were evaluated as "A", and in Example 12, both the graphic image observation and the retroreflective performance test were particularly excellent.

Hereinafter, the road surface decorative sheet will be further described with reference to examples and comparative examples of the present invention. In Examples 14-17 and Comparative Example 6, materials shown in Tables 9-11 were used. The abbreviations in Table 9 mean the following compounds.
IOA: isooctyl acrylate AA: 1,4-BDA acrylic acid: 1,4-butanediol diacrylate

(Example 14)
(Preparation of backing film layer)
First, a solution for preparing the first coating solution was prepared. This solution has the materials and blending ratios shown in Table 10. 50.02 g of the solution for preparing the first coating solution and 8.77 g of acrylic beads were weighed and stirred at 1000 rpm for 5 minutes using a Cowles mixer to prepare the first coating solution. Homo Disper Model 2.5 (manufactured by Primix) was used as the cowless mixer.

Subsequently, a base film was prepared, and the first coating solution was applied onto the first surface of the base film by a knife coating method. The coating amount of the first coating solution was 0.082 g per 3 cm×15 cm film area of the substrate film in terms of dry weight. The base film coated with the first coating solution is dried by heating at a temperature of 65° C. for 2 minutes, followed by drying by heating at a temperature of 95° C. for 1 minute, and further drying by heating at a temperature of 155° C. for 3 minutes. to form an acrylic bead-containing coating layer on the first surface of the base film.

Next, a primer was prepared and applied to the second surface of the substrate film opposite to the first surface by a knife coating method. The substrate film coated with the primer was dried by heating at a temperature of 65° C. for 1 minute to form a primer layer on the second surface of the substrate film.

Next, a solution for preparing the second coating solution was prepared. This solution has the materials and blending ratios shown in Table 11. 40.08 g of the solution for preparing the second coating solution, 9.19 g of purified water, and 1.94 g of the first curing agent were weighed and stirred at 1000 rpm for 5 minutes using a Cowles mixer to form the second coating solution. It was adjusted. Homo Disper Model 2.5 (manufactured by Primix) was used as the cowless mixer.

Subsequently, a second coating solution was applied onto the primer layer by a knife coating method. The coating amount of the second coating solution was 0.048 g per 3 cm×15 cm area of the primer layer in terms of dry weight. The base film coated with the second coating solution on the primer layer is dried by heating at a temperature of 65° C. for 2 minutes and then dried by heating at a temperature of 95° C. for 3 minutes to form an acrylic adhesive layer containing adhesive fine particles. formed on the primer layer. The backing film layer was completed by forming the adhesive microparticle-containing acrylic adhesive layer on the primer layer. The backing film layer comprises an acrylic bead-containing coat layer, a base film, a primer layer, and an acrylic adhesive layer containing adhesive fine particles in this order.

(Preparation of design layer)
A film-like design layer was produced by forming a white acrylic ink-receiving layer on an aluminum foil. A white acrylic ink-receiving layer was prepared by the same procedure as that for preparing the ink-receiving layer in Example 1.

(Preparation of Precursor of Graphic Construct)
In this example, the adhesive fine particle-containing acrylic adhesive layer of the backing film and the aluminum foil of the design layer were laminated together to prepare a precursor of the graphic composition. This precursor comprises a backing film layer and a design layer.

Table 12 shows the composition of the precursor of the graphic composition according to Example 14. This table shows the thickness or mass per unit area of each layer contained in the design layer and the backing film layer.

(Bending resistance test)
A test piece was prepared by cutting the precursor of the graphic construction prepared in Example 14 into a size of 1.5 inches (38.1 mm) in the MD direction and 1 inch (25.4 mm) in the CD direction. . The MD direction (Machine Direction) indicates the direction (longitudinal direction) in which the precursor of the graphic composition is wound, and the CD direction (Cross Machine Direction) indicates the direction perpendicular to the longitudinal direction (lateral direction).

Using a Gurley bending resistance tester (see TAPPIT 543 om-94), the bending resistance S of the test piece was measured. In the bending resistance test, the distance D from the weight to the axis of rotation of the pendulum is 4 inches (101.6 mm), the mass M of the weight is 25 g, the length Lp of the test piece is 1 inch (25.4 mm), The width Wp was 1 inch (25.4 mm). In this example, the bending resistance S was calculated by reading the scale R of the pendulum and using the formula (1). The bending resistance test was performed three times, and the bending resistance S was the average value of the test results.
S=1000×(R×D×M× _LR ² )/(10×V× _WR ) (1)
In formula (1), V indicates the distance from the bar with which the test piece contacts to the pendulum, which is 127.0 mm in this example. _LR is a value obtained by dividing the length Lp of the test piece by the reference length Ls of the test piece (Lp/Ls), and the reference length Ls of the test piece is 76.2 mm. _WR is a value obtained by dividing the width Wp of the test piece by the reference width Ws of the test piece (Wp/Ws), and the reference width Ws of the test piece is 25.4 mm.

(Adhesion strength test under standard conditions)
An adhesion test was conducted on the backing film in a standard state (before heat curing) bonded to the aluminum foil layer. First, the precursor of the graphic composition prepared in Example 14 was cut into a size of 150 mm in the MD direction and 1 inch (25.4 mm) in the CD direction to prepare a test piece. Subsequently, the white acrylic ink-receiving layer side of each test piece was attached to an aluminum plate. The size of the aluminum plate was 150 mm×70 mm×thickness 1 mm, and the test piece was attached to the aluminum plate using double-sided tape. Using a tensile tester (manufactured by Orientec), the peel strength of the backing film to the aluminum foil layer was examined. The peeling angle was 180 degrees, the measurement temperature was 20°C, and the peeling speed was 300 mm/min. The peel test was conducted twice, and the adhesive force was calculated from the average value of the peel strengths.

(Adhesion test after heat curing)
Adhesion test of the backing film after heat curing to the aluminum foil layer was conducted. In this test, first, a test piece attached to an aluminum plate was prepared by the same procedure as the adhesion test under standard conditions. Subsequently, this test piece was cured at a temperature of 65° C. for 7 days, and then left to stand at a temperature of 20° C. for 1 day. .

(Transportability test)
A test piece was prepared by cutting a graphic construction precursor into a size of 30 cm wide by 1 m long. Subsequently, a transportability test was conducted using a large format inkjet printer SOLJETPRO 4 XR640 (manufactured by Roland DG). In this test, the end of the short side of the test piece was set in the printer, and the feed function was used to convey the test piece, and the change in appearance of the test piece was visually observed. As a result of the visual test, (a) the test piece maintained smoothness, (b) there was no lift or breakage from the printer platen, and (c) no media jam occurred. Occasionally, it was evaluated as "good (A)". As a result of visual observation, when even one of the above (a) to (c) was not satisfied, it was evaluated as "bad (B)". Note that the platen indicates a portion of the printer that supports the test piece from behind when ink is sprayed, and the media jam indicates that the test piece is caught in the head that ejects ink and the printing operation stops.

(Printability test)
A test piece was prepared by cutting a 30 cm wide by 1 m long from the precursor of a graphic construction that was evaluated as "A" by the transportability test. A printability test was performed on the prepared test piece using SOLJETPRO 4 XR640/ECO-SOL MAX2 ink (manufactured by Roland DG). In the printability test, three types of digital images were printed: a solid image, a CMYK color bar, and a photograph. The solid image had ink densities of 67% cyan, 67% magenta, 67% yellow, and 100% black (301% in total). As a profile for printing, "IJ180Cv3-10", which is a condition for Scotchcal ^™ graphic film IJ180Cv3-10 (manufactured by 3M), was used. The printing conditions were standard image quality, resolution 720×720 dpi, bi-directional printing, and Max density Japan. The temperature conditions were set to 40°C for the pre-heater, 40°C for the print heater, and 50°C for the after-heater. In the printability test, a test piece for which printing was completed without any problems was visually observed, and when good image quality was obtained, it was evaluated as "good (A)." When good image quality was not obtained, it was evaluated as "poor (B)". The test piece for which printing was stopped midway was evaluated as "poor (B)" without visual observation.

(Removability test)
A peelability test of the design layer from the backing film layer was conducted. The peelability test was performed on test pieces rated "A" by the printability test. Specifically, the test piece was placed on a workbench with the design layer of the test piece facing downward and the backing film of the test piece facing upward, and the backing film was peeled off from the test piece by hand. After peeling off the backing film layer, the design layer was visually observed, and when the film was flat with few creases in the design layer, it was evaluated as "good (A)". On the other hand, when the design layer had many wrinkles and the film was not flat, it was evaluated as "bad (B)". Table 13 is a table showing test results according to Examples 14 to 17 and Comparative Example 6.

(Example 15)
In Example 15, a film prepared by the same procedure as in Example 14 was used as the design layer, and the first film was used as the backing film layer. The graphic construction precursor of this example comprises, in order, a white vinyl chloride film, an acrylic adhesive layer, an aluminum foil, and a white acrylic ink-receiving layer. Table 14 is a table showing the composition of the precursor of the graphic composition according to Example 15. This table shows the thickness of each layer included in the design layer and the backing film layer.

(Example 16)
In Example 16, a film produced by the same procedure as in Example 14 was used as the design layer, and a second film was used as the backing film layer. The graphic construction precursor of this comparative example comprises a paper layer, an adhesive layer, an aluminum foil, and a white acrylic ink-receiving layer in this order. Table 15 shows the precursor composition and the thickness of each layer of the graphic construction according to Example 16.

(Example 17)
In Example 17, a film prepared by the same procedure as in Example 14 was used as the design layer, and a third film was used as the backing film layer. The graphic construction precursor of this comparative example comprises, in order, a transparent OPP film, an acrylic adhesive layer, an aluminum foil, and a white acrylic ink-receiving layer. Table 16 shows the precursor composition and the thickness of each layer of the graphic construction according to Example 17.

(Comparative Example 6)
In Comparative Example 6, the graphic construction precursor comprises only the design layer. The design layer was produced by the same procedure as in Example 14. The graphic construction precursor of this comparative example comprises an aluminum foil and a white acrylic ink-receiving layer. Table 17 shows the precursor composition and the thickness of each layer of the graphic construction according to Comparative Example 6.

Reference Signs List 1, 1p, 1q, 1r, 1s Decorative sheet for road surface 5 Road surface 6 Road surface portion 10 Surface coating layer 11 Upper end 12 Retroreflective member 14 Soda lime glass 16 Graphic composition 17A, 18A Particles (anti-slip member) 20 Design layer 22 Support layer 24 Ink-receiving layer 30 Adhesive layer 50 Precursor of graphic composition 52 Backing film layer 54... Pre-design layer, 54p... Design layer, 54a... Support layer, 54b... Ink receiving layer.

Claims (10)

a graphic construction having an adhesive layer and a design layer provided on the adhesive layer;
a surface coat layer covering the graphic structure and containing a urethane resin;
a retroreflective member provided on the surface coat layer,
The surface coat layer covers the surface of the graphic construction and the periphery including the edges of the graphic construction,
The retroreflective member comprises glass beads provided so as to be exposed from the upper end of the surface coat layer ,
The design layer has an ink-receiving layer, a support layer that supports the ink-receiving layer, and an ink layer formed on the ink-receiving layer,
The road surface decorative sheet , wherein the support layer, the ink receiving layer, and the ink layer are provided in this order on the adhesive layer . 2. The road surface decorative sheet according to claim 1, wherein the glass beads have a particle size of 106 to 850 μm. 3. The road surface decorative sheet according to claim 1, wherein the urethane resin comprises a two-part urethane resin composition having a polyol as a main agent and a polyfunctional isocyanate as a curing agent. The road surface decorative sheet according to any one of claims 1 to 3, wherein the surface coat layer has an anti-slip member. 5. The road surface decorative sheet according to claim 4 , wherein the support layer includes an aluminum foil that reduces deformation of the ink layer formed on the ink receiving layer . placing on a road surface a graphic construction having an adhesive layer and a design layer provided on the adhesive layer;
forming a surface coat layer by coating a urethane resin on the surface of the graphic structure placed on the road surface and the periphery of the graphic structure, including the ends thereof ;
a step of scattering retroreflective glass beads so as to be exposed from the upper end of the surface coat layer in order to retroreflect light from the outside ;
The design layer has an ink-receiving layer, a support layer that supports the ink-receiving layer, and an ink layer formed on the ink-receiving layer,
A method for installing a road surface decorative sheet , wherein the support layer, the ink receiving layer, and the ink layer are provided in this order on the adhesive layer. 7. The method for installing a road surface decorative sheet according to claim 6 , wherein the retroreflective glass beads have a particle size of 106 to 850 μm. 8. The method according to claim 6 , wherein in the step of forming the surface coat layer, the area coated with the urethane resin includes a road surface portion that is not covered with the graphic construction and is exposed around the graphic construction. Installation method of decorative sheet for road surface. removing the backing film layer from the printed precursor on which the design layer is formed to form a graphic construction, and placing the graphic construction on a road surface;
forming a surface coat layer by coating a urethane resin on the surface of the graphic structure placed on the road surface and the periphery of the graphic structure, including the ends thereof ;
A method for installing a road surface decorative sheet comprising the step of scattering retroreflective beads so as to be exposed from the upper end of the surface coat layer in order to retroreflect light from the outside,
The backing film layer has a base film layer and an adhesive layer, and is detachably attached to the design layer by the adhesive layer,
The design layer has an ink-receiving layer, a support layer that supports the ink-receiving layer, and an ink layer formed on the ink-receiving layer,
In the precursor, the ink layer, the ink-receiving layer, the support layer, and the backing film layer are arranged in at least this order,
A method for installing a road surface decorative sheet, wherein the ink layer is formed by printing on the ink receiving layer on the opposite side of the support layer. The precursor has a bending resistance greater than 320 mgf, and
10. The method of installing a road surface decorative sheet according to claim 9 , wherein the adhesive layer has an adhesive force of less than 0.5 N/25 mm.

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