WO2019139136A1 - Laminated body - Google Patents

Abstract

Provided is a laminated body design properties superior to those in the prior art. A laminated body (1A) that includes a translucent base material (11) and an uneven layer (20) having a plurality of plan-view line-shaped protrusions on the surface thereof, the uneven layer (20) having a pattern in plan view in which the line-shaped protrusions, which have curved sections having a degree of curvature of 30-150°, are multiply formed with gaps therebetween, and the ratio (S/L) of the gaps (S) between the plurality of protrusions to the line width (L) of the protrusions being 10 or less. The protrusions preferably include first straight-line sections facing in a first direction and second straight-line sections facing in a second direction, the first straight-line sections and second straight-line sections being smoothly connected via the curved sections in plan view.

Description

Laminate

The present invention relates to a laminate.

The glass plate has high durability, a smooth surface, high designability due to texture, reflection and the like, and is widely used in buildings, interiors and the like. Furthermore, in recent years, building members such as windows, floors, walls and ceilings; interior members such as table tops; exterior materials for white goods such as washing machines and refrigerators; mobile phones, personal digital assistants (PDAs) In applications such as electronic devices, glass materials having higher designability are being sought. In the future, it is expected that the applications of glass materials with high designability will be expanded.

Under such a background, laminated glass in which a different material other than glass such as printed PET (polyethylene terephthalate) film, paper such as Japanese paper, cloth, metal, marble, wood, pressed flowers, veins and the like is enclosed is proposed. This laminated glass is based on a five-layer structure of glass plate / translucent resin film (interlayer film) / different material / translucent resin film (interlayer film) / glass plate, and different materials are viewed through the glass plate on the front side By doing this, it is possible to realize a design excellent in aesthetics.
The dissimilar material has a color, a pattern, a pattern, and the like, and can function as a design layer. For example, Patent Document 1 discloses a laminate having a five-layer structure formed by laminating and forming a glass plate / adhesive film / a base plate backing sheet / adhesive film / glass plate (see Patent Document 1).

Japanese Patent Publication No. 08-015770

In the said laminated body, the glass plate on the back side is not essential. Moreover, you may use arbitrary translucent base materials, such as a translucent resin board, instead of a glass plate. In a laminate including a translucent substrate and a design layer, more advanced design is required as the value added of various products is increased.

This invention is made in view of the said situation, and aims at provision of the laminated body excellent in the designability conventionally.

The laminate of the present invention is
A laminate comprising: a translucent base material; and a concavo-convex layer having a plurality of convex portions in the form of lines in a plan view on the surface,
The concavo-convex layer has a pattern in which a plurality of linear convex parts having a curved part with a bending angle of 30 to 150 degrees are formed at intervals with a space in a plan view,
A ratio (S / L) of an interval (S) of the plurality of convex portions to a line width (L) of the convex portion is 10 or less.

The layered product of the present invention is three-dimensionally recognized so that the portion where the curved portions of the plurality of convex portions included in the concavo-convex layer are in a row swells in the front or back, and the depth greater than the thickness of the translucent substrate It is felt and it is superior in design than before.

It is a schematic cross section of the laminated body of 1st Embodiment which concerns on this invention. It is a partial expansion schematic cross section of the surface layer part of a concavo-convex layer. It is an example of the planar pattern of one convex part contained in an uneven | corrugated layer. It is a schematic cross section of the laminated body of 2nd Embodiment which concerns on this invention. It is a schematic cross section of the laminated body of 3rd Embodiment concerning this invention. It is a schematic cross section of the laminated body of 4th Embodiment concerning this invention. It is a schematic cross section of the laminated body of 5th Embodiment concerning this invention. It is a schematic cross section of the laminated body of 6th Embodiment concerning this invention. It is a schematic cross section of the laminated body of 7th Embodiment concerning this invention. It is a schematic cross section of the laminated body of 8th Embodiment concerning this invention. It is a low magnification photograph (whole photograph) of the laminated body obtained in Example 2 of [Example]. It is a medium power photography of the laminated body obtained in Example 2 of [Example]. It is a high-magnification photograph of the laminated body obtained in Example 2 of [Example].

In the concavo-convex layer, a plurality of regions A1 in which a plurality of first straight portions or a plurality of first curved portions extending in a first direction are formed, and a plurality of second straight portions LP2 or a plurality of regions directed in a second direction It is a schematic plan view which shows the 1st example of arrangement | positioning with several area | region A2 in which several 2nd curve parts are formed. In the concavo-convex layer, a plurality of regions A1 in which a plurality of first straight portions or a plurality of first curved portions extending in a first direction are formed, and a plurality of second straight portions LP2 or a plurality of regions directed in a second direction It is a schematic plan view which shows the 2nd example of arrangement | positioning with several area | region A2 in which several 2nd curve parts are formed. In the concavo-convex layer, a plurality of regions A1 in which a plurality of first straight portions or a plurality of first curved portions extending in a first direction are formed, and a plurality of second straight portions LP2 or a plurality of regions directed in a second direction It is a schematic plan view which shows the 3rd example of arrangement | positioning with several area | region A2 in which several 2nd curve parts are formed.

It is a model top view which shows the example of the pattern of the several convex part of the uneven | corrugated layer which is visible to a facet glass. It is a model top view which shows the example of the pattern of the several convex part of the uneven | corrugated layer which is visible to a facet glass. It is a model top view which shows the example of the pattern of the several convex part of the uneven | corrugated layer which is visible to a facet glass. It is a model top view which shows the example of the pattern of the several convex part of the uneven | corrugated layer which is visible to a facet glass. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention. It is a schematic cross section of the laminated body of another embodiment which concerns on this invention.

The thin film structure is generally referred to as "film", "sheet" or the like depending on the thickness and the like. In the present specification, the term "film" shall be used as a term that expresses the concept encompassing them without making any distinction between them.

Hereinafter, embodiments of the present invention will be described.
FIGS. 1A and 2 to 8 are schematic cross-sectional views showing the laminates of the first to eighth embodiments according to the present invention. In these figures, identical components are given the same reference numerals.
Laminated body 1A of 1st Embodiment shown to FIG. 1A has the laminated structure where the uneven | corrugated layer 20 which has an unevenness | corrugation in the surface was formed on one side (in the illustration upper surface) of the translucent base material 11. FIG. The uneven layer 20 has unevenness on the surface (upper surface in the drawing) opposite to the light transmitting substrate 11.
The laminate 1B according to the second embodiment shown in FIG. 2 includes a light-transmissive substrate 11 having a concavo-convex layer 20 having concavities and convexities on the surface, and a reflective layer 30 formed along the concavo-convex surface of the concavo-convex layer 20. It has a laminated structure formed sequentially.
In the laminates 1A and 1B of the first and second embodiments and the laminates 1C to 1E of the third to fifth embodiments described later, the translucent substrate 11 side (the lower side in the drawing) is the viewer side.

Examples of the translucent substrate 11 include a glass plate, a translucent resin plate, a translucent resin film, a combination thereof, and the like. The light-transmissive substrate 11 may have a single-layer structure or a laminated structure, or may be subjected to a treatment such as surface treatment.
A well-known thing can be used for a glass plate, and soda lime glass, borosilicate glass, an alkali free glass, etc. are mentioned. The glass plate may be subjected to known surface treatment such as anti-reflection (AR) treatment, antiglare layer (AG) treatment, anti-fingerprint (AFP) treatment, antifouling treatment, anti-bacterial treatment, etc. on the surface. The glass plate may be one subjected to known secondary processing such as reinforcement processing.
Acrylic resin; vinyl chloride resin; carbonate resin; epoxy resin; olefin resin such as polyethylene and polypropylene; styrene resin; ABS resin Styrene resins such as; amide resins such as nylon; fluorine resins; phenol resins; melamine resins; ester resins; combinations thereof, and the like.

The visible light transmittance of the light-transmissive substrate 11 measured in accordance with JIS R 3106 (1998) is preferably 80% or more, more preferably 85% or more, and particularly preferably 90% or more.
The surface roughness of the light-transmissive substrate 11 (arithmetic mean roughness Ra measured according to JIS B 0601 (2001)) is preferably 10 nm or less, more preferably 5 nm or less, still more preferably 2 nm or less .
The transparency and surface roughness of the light-transmissive substrate 11 are not limited to the above specifications, and may be subjected to an unevenness forming process such as glare prevention and matting.
The thickness of the light-transmissive substrate 11 is preferably 0.01 to 20 mm, more preferably 0.05 to 10 mm, and particularly preferably 0.15 to 5 mm.
The light-transmissive substrate 11 may have a three-dimensional curved surface such as a cylindrical shape, a watch glass shape or the like in addition to a flat shape.
Although a specific method will be described later, the light-transmissive substrate 11 may be obtained by molding a light-transmissive material on a concavo-convex substrate made of metal or the like on which the concavo-convex layer 20 is formed.

As a partially enlarged schematic cross-sectional view of the surface layer portion of the concavo-convex layer 20 is shown in FIG. 1B, the concavo-convex layer 20 has a plurality of convex portions in the form of lines in plan view on the surface opposite to the translucent substrate 21 has a concavo-convex pattern consisting of the concave portions 21 and concave portions formed in the gaps between them. In the drawing, reference symbol L denotes a line width of the convex portion, reference symbol H denotes a height of the convex portion, and reference symbol S denotes an interval between the plurality of convex portions.

The concavo-convex layer 20 has a pattern in which a plurality of linear convex parts 21 having at least one, preferably a plurality of curved parts having a bending angle of 30 to 150 ° in plan view are formed at intervals. The bending angle of the curved portion is preferably 50 to 130 °, more preferably 70 to 110 °, and particularly preferably 90 °.
The ratio (S / L) of the spacing (S) of the plurality of projections 21 to the line width (L) of the projections 21 is 10 or less, preferably 3 or less, more preferably 1 or less, particularly preferably 0.5 or less is there.
The sum (L + S) of the line width (L) of the convex portion 21 and the spacing (S) of the plural convex portions 21 is preferably 200 μm or less, and more preferably 80 μm or less. When L + S is 80 μm or less, the line-shaped convex portion can not be visually recognized, and the designability is improved. The lower limit of L + S is not particularly limited, but L + S is 5 μm or more in manufacture. When the convex portion 21 includes a plurality of curved portions, the ratio (D / R) of the distance (D) between the poles of the adjacent curved portions to the radius of curvature (R) of the curved portions is preferably 150 or less, more preferably It is 0.1 to 50, particularly preferably 0.5 to 10, and most preferably 1 to 8.

The cross-sectional shape of the convex portion 21 is not particularly limited, and, for example, as shown in FIG. 1B, a reverse half (elliptical) or the like is preferable. The cross-sectional shape of the convex portion 21 may be rectangular, trapezoidal, or chamfered shape thereof.
The height of the projections 21 is not particularly limited, and the ratio (H / L) of the height (H) of the projections to the line width (L) of the projections 21 is preferably 0.01 to 100, and more preferably It is 0.1 to 10, particularly preferably 0.2 to 5.

FIG. 1C shows an example of a planar pattern of one convex portion 21. In FIG. 1C, reference numeral BP denotes a curved portion having a bending angle of 30 to 150 °, reference numerals 21A, 21B and 21C denote poles of the curved portion, and reference numeral CP denotes a connection portion connected to the curved portion. In the convex portion 21 shown in FIG. 1C, the distance (D) between the poles of the curved portions adjacent to each other is the distance between the poles 21A and 21B or the distance between the poles 21B and 21C.

The connection portion CP connected to the curved portion BP may be a curved portion or a straight portion.
As shown in FIG. 1C, in one aspect, the uneven layer 20 has a first curved portion directed in a first direction and a second directed in a second direction connected via the curved portion BP in a plan view. It can have a pattern in which a plurality of linear convex portions 21 including a curved portion are formed at intervals.
In another aspect, the concavo-convex layer 20 has a first linear portion directed in a first direction smoothly connected via the curved portion BP and a second linear portion directed in a second direction in plan view. It is possible to have a pattern in which a plurality of linear convex portions 21 including an opening are formed at intervals.

As described above, the line-shaped convex portion 21 can include the first and second connection portions CP which are connected to one curved portion BP and which are curved portions or linear portions and directed in different directions. The linear convex portion 21 may not include the connection portion CP.
In the present specification, the bending angle is defined as follows.
When the first or second connection portion CP is a curved portion, a tangent at the inflection point between the first or second bending portion BP and the connection portion CP is obtained. If the first or second connection portion CP is a straight portion, an extension line of the first or second straight portion is obtained. When the connection portion CP is not connected to the bending portion BP, a tangent at an end point of the bending portion BP is obtained. The angle between the tangent or extension on one side of the bend and the tangent or extension on the other side is defined as the bending angle.

The material of the uneven layer 20 is not particularly limited. However, in order to prevent reflection at the interface between the light transmitting substrate 11 and the uneven layer 20, the difference in refractive index between the light transmitting substrate 11 and the uneven layer 20 is preferably as small as possible. Specifically, the refractive index difference is preferably 0.3 or less, more preferably 0.2 or less, particularly preferably 0.1 or less, and most preferably 0.05 or less.
The uneven layer 20 can preferably contain a translucent resin. The transmittance of the uneven layer 20 is preferably 70% or more, more preferably 80% or more, and particularly preferably 90% or more.
The formation method in particular of the uneven | corrugated layer 20 is not restrict | limited, It can form by common printing methods, such as a flexographic printing, an offset printing, a gravure, screen printing. For printing, for example, a photocurable ink (such as an ultraviolet (UV) curable ink) containing a photocurable resin can be used. For example, the uneven layer can be printed on a light transmitting substrate such as a glass plate, a light transmitting resin plate, a light transmitting resin film or the like using a UV printer “UJF-6042MkII” manufactured by Mimaki Engineering. In this method, the uneven layer can be formed by a simple process using a printing ink which is a low cost material. In this method, pattern design and pattern change are also easy.

The light-transmitting resin for the uneven layer 20 is not particularly limited, and is generally a phenol resin, a urea resin, a melamine resin, an alkyd resin, an unsaturated polyester resin, an epoxy resin, a diallyl phthalate resin, a polyurethane resin, a silicone resin, etc. Thermosetting resins can be used. In the case of using a thermosetting resin, for example, after the plurality of convex portions are pattern-printed, the uneven layer 20 is obtained by thermosetting.
In addition, as the translucent resin, polyethylene resin, polypropylene resin, polyvinylidene chloride resin, polyethylene terephthalate resin, polyamide resin, polyacetal resin, polybutylene terephthalate resin, polyphenylene sulfide resin, polyether ether ketone resin, liquid crystal polymer resin, polyimide Resin, acrylonitrile butadiene styrene resin, polystyrene resin, polymethyl methacrylate resin, polyvinyl chloride resin, polycarbonate resin, modified polyphenyrin ether resin, polysulfone resin, polyarylate resin, polyamide imide resin, polyether imide resin, etc. Thermoplastic resins can be used. When using a thermoplastic resin, for example, after forming a flat translucent resin layer, the uneven | corrugated layer 20 is obtained by pressing the type | mold with an unevenness | corrugation on the surface and heating a translucent resin layer. The timing of heating of the translucent resin layer may be before pressing the mold.

In the example shown in FIG. 1A and FIG. 2, although the concavo-convex layer 20 is a separate member from the translucent substrate 11, the surface layer portion of the translucent substrate 11 is concavo-convex processed and concavo-convex processed by a known method The surface layer portion may be the uneven layer 20.
Although the example shown in FIG. 1A and FIG. 2 is an example in which the concavo-convex layer 20 is formed on the translucent base material 11 prepared in advance, the metal etc. The uneven | corrugated substrate which consists of these may be prepared, and the translucent base material 11 may be shape | molded on this surface asperity. As a molding method of the translucent base material 11 on an uneven | corrugated board | substrate, the glass frit or translucent resin heat-melted is provided on an uneven | corrugated board | substrate, it cools and solidifies, and the translucent base material 11 is shape | molded. Method of coating a resin solution in which a translucent resin is dissolved in a solvent is coated on a concavo-convex substrate and dried by heating drying, reduced pressure drying, reduced pressure heating drying, etc. to form the translucent substrate 11 A liquid curable composition containing a precursor of a light transmitting resin such as a monomer, an oligomer, or a prepolymer is coated on a concavo-convex substrate and cured by heating or irradiation with an active energy ray such as ultraviolet light or electron beam And a method of forming the light-transmissive substrate 11 and the like.

The material of the reflective layer 30 formed along the surface unevenness of the uneven layer 20 may be any material that can effectively reflect light at the interface between the uneven layer 20 and the reflective layer 30, and the refractive index with the uneven layer 20 High refractive index materials and / or metals with a difference of 0.4 or more are preferred. The larger the difference in refractive index between the uneven layer 20 and the high refractive index material, the higher the reflectance, and the resulting laminate is likely to be viewed three-dimensionally. The refractive index difference between the uneven layer 20 and the high refractive index material is more preferably 0.6 or more, particularly preferably 0.8 or more. The upper limit of the refractive index difference is not particularly limited, but is usually 1.5 or less.

As metals suitable for use in the reflective layer 30, Mg, Zn, Al, Ga, In, Y, La, Ce, Pr, Nd, Ti, Zr, Sn, Fe, Co, Ni, V, Nb, Ta, It is preferable to use an elemental metal or alloy consisting of at least one element selected from the group consisting of Cr, Mo, W, Mn, Cu, Ag, Au, Pd, and Pt. Among them, Al and / or Ag are preferable because the reflectance is large.
Preferred high refractive index materials used for the reflective layer _{30, TiO 2, ZrO 2,} ZnO, Nb 2 O 5, Ta 2 O 5, Al 2 O 3, In 2 O 3, SnO 2, ZnS, and DLC At least one material selected from the group consisting of (diamond like carbon) is preferred. Among them, at least one material selected from the group consisting of TiO ₂ , Nb ₂ O ₅ , and ZnO is preferable because the material is inexpensive.

The method for forming the reflective layer 30 is not particularly limited, and a known method such as a vapor phase method such as a sputtering method or an evaporation method; a coating method; a printing method or the like can be applied.
The reflective layer 30 may have a laminated structure of a plurality of films having different refractive indexes. In this case, the reflective layer 30 may be a light interference film, and the reflectance may be increased. For example, an optical interference film can be easily obtained by depositing TiO ₂ and SiO ₂ alternately.
The reflective layer 30 can be formed on all or part of the surface of the uneven layer 20. When the laminate 1B is used in an electronic device such as a mobile phone, the laminate 1B is required to transmit radio waves. Generally, the laminate 1B including the reflective layer 30 made of metal tends to deteriorate the radio wave permeability, but by partially forming the reflective layer 30 on the surface of the uneven layer 20, the radio wave can be transmitted. I can improve the sex.

In the laminate 1A according to the first embodiment which does not have the reflective layer 30, light incident from the side of the light transmissive substrate 11 is reflected at the interface between the surface irregularities of the uneven layer 20 and air, and the reflected image is viewed. In the laminate 1B of the second embodiment having the reflective layer 30, light incident from the side of the light transmissive substrate 11 is reflected at the interface between the surface irregularities of the uneven layer 20 and the reflective layer 30, and a reflected image is viewed .

The light incident from the side of the light transmitting substrate 11 is mainly reflected in the line width direction of the line-shaped convex portion 21 in plan view, and is hardly reflected in the direction perpendicular to the line width direction. In addition, when a plurality of linear convex portions 21 are formed spaced apart in a plan view, the contrast in the line width direction of the linear convex portions 21 and the direction perpendicular to the line width direction becomes larger. . In addition, when the bending angle of the convex portion 21 is 30 to 150 ° in plan view, the extending direction of the convex portion is significantly changed at the curved portion, and the contrast is significantly generated at the curved portion. This contrast tends to increase as the bending angle approaches 90 °. Due to this contrast, the portion where the plurality of curved portions BP are connected is visually recognized in a three-dimensional manner so as to bulge toward the near side or the far side. It is determined by the positional relationship between the light source, the laminate, and the observer whether the light is viewed on the front side or the back side.

The three photographs shown in FIGS. 9A to 9C are examples of surface photographs of an example of the laminate of the second embodiment, and are photographs of the same sample taken at different magnifications.
The laminate shown in FIGS. 9A to 9C has a first straight portion LP1 and a second direction directed in a first direction (diagonally upper right direction in the figure) smoothly connected via the curved portion BP in a plan view. A plurality of line-shaped convex portions having a pattern consisting of a second straight portion LP2 directed toward (the oblique lower right direction in the figure) continuously repeated in the horizontal direction in the figure (a portion which looks white in lines in FIGS. 9B and 9C) But includes uneven layers formed periodically at equal intervals in the vertical direction in the drawing.
The photographs shown in FIGS. 9A to 9C are photographs of the surface of the reflective layer formed on the uneven layer, and the surface unevenness of the reflective layer corresponds to the surface unevenness of the uneven layer.
In the laminated body shown in FIGS. 9A to 9C, the portion where the curved portions BP of the plurality of convex portions included in the concavo-convex layer 20 are continuous is visually recognized three-dimensionally as if swelling on the front side or the back side. A depth greater than the thickness of the base material 11 is felt, and the designability is superior to that of the prior art.

As described above, the concavo-convex layer 20 has at least one, preferably a plurality of curved portions with a bending angle of 30 to 150 °. The bending angle of the curved portion is preferably 50 to 130 °, more preferably 70 to 110 °, and particularly preferably 90 °. The ratio (S / L) of the spacing (S) of the plurality of projections 21 to the line width (L) of the projections 21 is 10 or less, preferably 3 or less. When the convex portion 21 includes a plurality of curved portions, the ratio (D / R) of the distance (D) between the poles of the adjacent curved portions to the radius of curvature (R) of the curved portions is preferably 150 or less, more preferably It is 0.1 to 50, particularly preferably 0.5 to 10, and most preferably 1 to 8.
When the concavo-convex layer 20 satisfies the above conditions, the occurrence of contrast and stereoscopic vision are effectively expressed, and the portion where the curved portions BP of the plurality of convex portions 21 included in the concavo-convex layer 20 are connected is on the front side or the back side The laminates 1A and 1B can be provided such that they are visually recognized in a three-dimensional manner so as to expand, have a depth greater than the thickness of the light-transmissive substrate 11, and are superior in design to conventional ones.

It is preferable that the connection portion CP connecting the adjacent curved portions BP includes a linear portion. As described above, light incident from the side of the light transmissive substrate 11 is mainly reflected in the line width direction of the line-shaped convex portion 21 in plan view, and is hardly reflected in the direction perpendicular to the line width direction. . When the connection portion CP includes a linear portion, the curved portion BP and the linear portion have different reflection characteristics because the line width direction is different, and a contrast is significantly generated at the boundary between the curved portion BP and the linear portion. Due to this contrast, a portion in which a plurality of curved portions BP are connected is likely to be viewed three-dimensionally as if it bulges to the front side or the back side. In addition, if the ratio of the length of the first straight portion or the second straight portion to the radius of curvature (R) of the curved portion is 150 or less, the portion where the plurality of curved portions BP are connected is the front side or the back side It is easy to be seen three-dimensionally as if it were swollen.

In the concavo-convex pattern shown in FIGS. 9A to 9C, as schematically shown in FIG. 10, the plurality of first straight portions LP1 or the plurality of first curved portions toward the first direction (the obliquely upper right direction in the drawing) A plurality of regions A1 to be formed and a plurality of regions A2 in which a plurality of second straight portions LP2 or a plurality of second curved portions toward the second direction (in the lower right direction in the drawing) are formed It is arranged in a stripe pattern alternately in the direction.
The uneven layer 20 includes one or more regions A1 in which a plurality of first linear portions LP1 or a plurality of first curved portions are formed, and a plurality of second linear portions LP2 or a plurality of second curved portions. There can be one or more regions A2 to be formed, and the arrangement of the one or more regions A1 and the one or more regions A2 can be appropriately changed in design.
In the uneven layer 20, one or more regions A1 in which the plurality of first linear portions LP1 or the plurality of first curved portions are formed, and the plurality of second linear portions LP2 or the plurality of second curved portions Another arrangement example with the one or more regions A2 to be formed is shown in FIG. 11 and FIG.
In FIG. 10 to FIG. 12, there is a formation area of the curved portion BP (not shown) at the boundary between the area A1 and the area A2.

According to the present invention, it is possible to provide a laminate having an appearance like a facet glass without engraving the light-transmissive substrate.
FIGS. 13 to 16 show examples of patterns of the plurality of convex portions 21 of the concavo-convex layer which looks like a facet glass. In the laminate, one or more patterns as shown in FIGS. 13 to 16 can be formed.
The pattern of the concavo-convex layer of the aspect shown in FIGS. 13 to 16 is a first straight portion LP1 directed to the first direction smoothly connected via the curved portion BP and a second direction in plan view. A plurality of line-shaped convex portions 21 formed of the second linear portion LP2 have a convex portion group formed periodically at equal pitches.
The concavo-convex layer can include a convex portion group in which the curved portions BP of the plurality of convex portions 21 formed at intervals are linearly continued in plan view, and preferably from one central portion without overlapping each other A plurality of radially extending convex groups may be included.
In the case where there are a plurality of convex portion groups having different directions in which the curved portions BP of the plurality of convex portions 21 formed at a plurality of intervals are linearly connected, the curved portions BP of the plurality of convex portions 21 formed at a plurality of intervals are linear. It is easy to be visually recognized in three dimensions so that the part which continued in a line swells to the near side or back side, and is preferable.

The pattern 2X of the embodiment shown in FIG. 13 is formed by connecting the first to fourth straight lines LA1 to LA4 in which the curved portions BP of the plurality of convex portions 21 formed at intervals are extended from the center point in different directions. The fourth group of convex portions 22A to 22D are included. These four convex portion groups 22A to 22D extend in different radial directions (a total of four directions) from one central portion without overlapping each other. The four convex portions 22A to 22D have the same maximum width. The intersections of the first to fourth straight lines LA1 to LA4 are central points, and the central point and the vicinity thereof are central parts. The first to fourth straight lines LA1 to LA4 extend radially at equal intervals of 90 °.
In FIG. 13, the symbol W _max is the maximum width of the convex portion group (maximum width when one convex portion group consisting of a plurality of convex portions is regarded as one mass). The symbol R denotes the radial length of the convex portion group (the radial length of the convex portion group when one convex portion group including a plurality of convex portions is regarded as one mass).

The pattern 3 of the embodiment shown in FIG. 14 is formed by connecting the first to eighth straight lines LB1 to LB8 in which the curved portions BP of the plurality of convex portions 21 formed at intervals are extended from the center point in different directions. Through eighth convex portions 23A-23H. These eight convex portion groups 23A to 23H extend in different radial directions (total eight directions) from one central portion without overlapping each other. The eight convex portions 23A to 23H have the same maximum width. The intersections of the first to eighth straight lines LB1 to LB8 are central points, and the central point and the vicinity thereof are central parts. The first to eighth straight lines LB1 to LB8 extend radially at 45 ° intervals.

The number of convex portions extending from one central portion can be changed as appropriate. For example, as in pattern 4 shown in FIG. 15, a plurality of convex portions are not overlapped from each other in the radial direction from one central portion. It can also be 36 extended convex groups. In this case, the center lines of the convex groups extend radially at equal intervals of 10 °. The lower right part of FIG. 15 is a partially enlarged view of the central point and the vicinity thereof.

Focusing on the first convex portion group and the second convex portion group adjacent to each other, in the first convex portion group, a direction in which the curved portions of the plurality of convex portions formed with a gap are continuous is a first linear direction In the second group of convex portions, a direction in which the curved portions of the plurality of convex portions formed at intervals are continuous is a second linear direction, and an angle formed by the first linear direction and the second linear direction. Let θ be.
From the viewpoint of three-dimensional visual effects, θ is preferably 10 to 170 °, more preferably 45 to 135 °, still more preferably 80 to 100 °, and particularly preferably 90 °.
In addition, a boundary between the first group of convex portions and the second group of convex portions extends from the intersection of the first linear direction and the second linear direction with the first linear direction and the second linear direction. It is preferable to be parallel to a bisector or a straight line of an angle within ± θ / 4 from the bisector.
By doing this, it is possible to naturally connect the first convex group and the second convex group adjacent to each other formed along different directions without discomfort, and three-dimensional visual recognition becomes effective. .

In the embodiment shown in FIG. 13, for example, the first convex group is the convex group 22A, the second convex group is the convex group 22B, the first straight line direction is the direction of the straight line LA1, The straight line direction of is the direction of the straight line LA2, and the boundary between the first convex portion group and the second convex portion group can be the direction of the straight line MA1. In this embodiment, θ is 90 °. In this aspect, since the maximum widths of the plurality of convex portion groups 22A to 22D are the same, the boundary line MA1 between the first convex portion group and the second convex portion group is the first linear direction and the second linear direction. It can coincide with the bisector NA1 of the first linear direction and the second linear direction extending from the intersection with the linear direction.

In the embodiment shown in FIG. 14, for example, the first convex group is the convex group 23A, the second convex group is the convex group 23B, and the first straight line direction is the direction of the straight line LB1, the second straight line direction. The straight line direction may be the direction of the straight line LB2, and the boundary between the first convex portion group and the second convex portion group may be the direction of the straight line MB1. In this embodiment, θ is 45 °. Also in this aspect, since the maximum widths of the plurality of convex portion groups 23A to 23H are the same, the boundary line MB1 between the first convex portion group and the second convex portion group is the first linear direction and the second linear direction. And a bisector NB1 of a first linear direction and a second linear direction extending from the point of intersection with the linear direction.

The pattern 2Y of the aspect shown in FIG. 16 is an example in which the maximum width of the convex portions 22B and 22D is smaller than the maximum width of the convex portions 22A and 22C in the pattern 2X of the aspect shown in FIG. In this case, the boundary line MA1 between the first convex group and the second convex group is a first linear direction and a second linear direction extending from an intersection of the first linear direction and the second linear direction. And the bisecting line NA1 of the

As in the embodiment shown in FIGS. 13 to 16, it is preferable that the end portions 21E (see FIG. 13) of the individual convex portions 21 be curved portions having a bending angle of 105 to 165 ° in plan view. By forming the end portions 21E of the individual convex portions 21 as curved portions, it is preferable that the formed portions and the non-formed portions of the convex portions are visually recognized as being naturally connected.

A decorative layer 40 may be provided between the translucent base 11 and the concavo-convex layer 20 as in a laminate 1 </ b> C of the third embodiment shown in FIG. 3.
The decorative layer 40 is a layer for enhancing design, and is a translucent layer having a color, a pattern, a pattern, and the like. The method for forming the decorative layer 40 is not particularly limited, and for example, a method of printing by a known method such as screen printing or inkjet printing using a photocurable ink containing a photocurable resin is preferable. The decorative layer 40 can be, for example, a black and white or color printing layer. For example, by printing a wood grain pattern as the decorative layer 40, it is possible to provide a laminate that uses wood at low cost without using wood that is a high-cost natural material.
The laminate 1C of the third embodiment has the same basic configuration as the laminate 1B of the second embodiment, and can exert the same effects as the laminate 1B of the second embodiment. Laminated body 1C of a 3rd embodiment can raise designability more by having decoration layer 40.
In the laminate 1C according to the third embodiment having the reflective layer 30, as in the laminate 1B according to the second embodiment, the light incident from the side of the light transmitting substrate 11 causes the surface irregularities of the uneven layer 20 and the reflective layer 30 The light is reflected at the interface, and the reflected image is viewed. In the laminate 1C according to the third embodiment, as in the case of the laminate 1A according to the first embodiment, the light incident from the side of the light transmitting substrate 11 is not provided with the reflective layer 30, and the surface irregularities of the uneven layer 20 and air. It may be made to reflect at the interface of

The formation position of the decoration layer 40 can be changed suitably. For example, you may form the decoration layer 40 on the reflection layer 30 like laminated body 1D of 4th Embodiment shown in FIG. In this case, the reflective layer 30 preferably has translucency so that the decorative layer 40 can be viewed from the translucent substrate 11 side.
The laminate 1D of the fourth embodiment has the same basic configuration as the laminate 1B of the second embodiment, and can exert the same effects as the laminate 1B of the second embodiment.

In addition, as in a laminate 1E of the fifth embodiment shown in FIG. 5, a first decorative layer 40 is provided between the light transmitting substrate 11 and the concavo-convex layer 20, and the first decorative layer 40 is further formed on the reflective layer 30. Two decorative layers 41 may be formed.
The laminate 1E of the fifth embodiment has the same basic configuration as the laminate 1C of the third embodiment, and can exert the same effects as the laminate 1C of the third embodiment. The layered product 1E of a 5th embodiment can raise design nature more by having two decoration layers 40 and 41.

The laminate 1F of the sixth embodiment shown in FIG. 6, the laminate 1G of the seventh embodiment shown in FIG. 7, and the laminate 1H of the eighth embodiment shown in FIG. The pre-laminates PL1 to PL3 in which the concavo-convex layer 20, the reflective layer 30, and the decorative layers 40 and 41 as necessary are formed on the surface (upper surface in the drawing), and the translucent member 12 It is pasted through 50. The translucent resin film 50 is an adhesive film or an adhesive film.
As above-mentioned as a translucent base material 11, a glass plate, a translucent resin board, a translucent resin film, these combinations, etc. are mentioned. As the translucent member 12, the same material as the translucent substrate 11 can be used. When a translucent resin film is used as the translucent substrate 11, it is possible to manufacture the pre-laminate PL at a low cost by a so-called roll to roll process.

As a material for the translucent resin film 50, an interlayer film of laminated glass containing one or more thermoplastic resins such as polyvinyl acetal such as ethylene / vinyl acetate copolymer (EVA), polyvinyl butyral (PVB), ionomer, etc. Adhesive materials for use; adhesive materials such as acrylics, rubbers, urethanes and silicones are preferably used.
The form of the material for the translucent resin film 50 is preferably a thermoplastic resin film such as an EVA film, a PVB film, or an ionomer film; a transparent adhesive film such as an acrylic, rubber, urethane, or silicone type. By using the film, the pre-laminates PL1 to PL3 and the light transmitting member 12 can be easily bonded.
In addition, when using an adhesive, attachment or detachment of the translucent member 12 can be performed in a normal use environment (under normal temperature normal pressure environment).
The translucent resin film 50 may have a single layer structure or a multilayer structure of two or more layers. The translucent resin film 50 may have a laminated structure of an adhesive film and an adhesive film. For example, in a film having a laminated structure in which an acrylic, rubber or silicone adhesive film is formed on the surface of a thermoplastic EVA film, the high adhesion of the EVA film and the removability of the adhesive film (repeated It can have the property which can be stuck / peeled off.

The translucent resin film 50 can contain a coloring agent as needed. In this case, the laminate can exhibit a color in which the color of the decorative layer and the color of the light-transmitting resin film are combined. By freely combining the color of the decorative layer and the light transmitting resin film, the degree of freedom in design of the color of the laminate is increased, and development of color variation is also possible. As a coloring agent, a well-known thing can be used and a pigment, dye, these combinations are mentioned.
The translucent resin film 50 can contain an ultraviolet (UV) absorber as needed. The UV absorber can prevent deterioration of the uneven layer 20, the reflective layer 30, and the decorative layers 40, 41 due to ultraviolet light.

In the laminate 1F according to the sixth embodiment shown in FIG. 6, the translucent member 12 side (upper side in the drawing) is the viewer side. In the laminate 1F, light incident from the light transmitting member 12 side is reflected at the interface between the surface asperity of the uneven layer 20 and the reflective layer 30, and a reflected image is visually recognized. The laminate 1F of the sixth embodiment has the same basic configuration as the laminate 1D of the fourth embodiment, and can exert the same effects as the laminate 1D of the fourth embodiment.
As in the laminate 1G of the seventh embodiment shown in FIG. 7, the decorative layer 40, the concavo-convex layer 20, and the reflective layer 30 are sequentially formed on one surface (upper surface in the drawing) of the translucent substrate 11 It may be a laminate.
Like the laminate 1H of the eighth embodiment shown in FIG. 8, the first decorative layer 40, the concavo-convex layer 20, the reflective layer 30, and the second layer are formed on one surface (upper surface in the drawing) of the translucent substrate 11. The decorative layer 41 may be sequentially formed to be a preliminary laminate.

The laminates 1A to 1H of the first to eighth embodiments can be appropriately changed in design without departing from the scope of the present invention.
The concavo-convex layer 20, the reflective layer 30, the decorative layers 40 and 41, and the translucent resin film 50 can contain any additive as needed.
The laminates 1A to 1H can include any other elements than those described above, if necessary, and the configuration can be changed as appropriate.
For example, as in a laminate 1I shown in FIG. 17, even a laminate including the light-transmissive member 12, the light-transmissive resin film 50, the light-transmissive substrate 11, and the concavo-convex layer 20 in order from the viewer side Good.
In addition, as in the laminate 1J shown in FIG. 18, a laminate including the light-transmissive member 12, the light-transmissive resin film 50, the light-transmissive substrate 11, the concavo-convex layer 20, and the reflective layer 30 in order from the viewer side It may be

In addition, as in the laminate 1K shown in FIG. 19, the light-transmissive member 12, the light-transmissive resin film 50, the decorative layer 40, the light-transmissive substrate 11, the uneven layer 20, and the reflective layer are sequentially from the viewer side. It may be a laminate comprising 30.
In addition, as in the laminate 1L illustrated in FIG. 20, the light-transmissive member 12, the light-transmissive resin film 50, the reflective layer 30, the uneven layer 20, the light-transmissive substrate 11, and the decoration layer are sequentially from the observer side. 40 may be a laminated body.
In addition, as in a laminate 1M shown in FIG. 21, a laminate including the light-transmissive member 12, the light-transmissive resin film 50, the light-transmissive substrate 11, the concavo-convex layer 20, and the decorative layer 40 in order from the viewer side It may be the body.

In addition, as in the laminate 1N shown in FIG. 22, the light-transmissive member 12, the light-transmissive resin film 50, the light-transmissive substrate 11, the uneven layer 20, the decorative layer 40, and the reflective layer are sequentially from the viewer side. It may be a laminate comprising 30.
In the planar view, the decorative layer 40 may be formed in a region where the concavo-convex layer 20 is not formed. By forming the decorative layer 40 in such a manner, an appearance like a facet glass with a colored layer obtained by engraving a glass whose surface is colored is obtained, and the designability is enhanced.
Moreover, since the facet glass with a colored layer is often produced by engraving on the glass whose entire surface is colored, in the laminate, the decorative layer 40 is not formed with the uneven layer 20 in plan view It may be formed in all areas. By forming the decorative layer 40 in such a manner, a laminate having an appearance similar to a faceted glass having a colored layer can be obtained.

EXAMPLES The present invention will be described below based on examples, but the present invention is not limited to these. In addition, the symbol and apparatus of the material used in each case are as follows.
<Glass plate>
(G1) Float glass plate (10 cm in length × 10 cm in width × 1.8 mm in thickness, 1.52 in refractive index, “FL2” manufactured by AGC Corporation).

<Thermoplastic resin film>
(F1) EVA film (10 cm long × 10 cm wide × 0.4 mm thick, “AB film” manufactured by Bridgestone Corporation),
(F2) Polyethylene terephthalate (PET) film (10 cm long × 10 cm wide × 125 μm thickness, manufactured by Printer Paper Pro, Inc.).
(F3) Polycarbonate film (10 cm in length × 10 cm in width × 50 μm in thickness, “C000” manufactured by ESCABO SHEET CO., LTD.).
<Transparent double-sided tape>
(T1) Transparent double-sided tape (10 cm in length × 10 cm in width × 50 μm in thickness, “G25” manufactured by Niei Kasei Co., Ltd.).
<UV printer>
MIMAKI ENGINEERING CO., LTD., UJF-6042 Mk II.

[Example 1-1 to 1-24]
In each of Examples 1-1 to 1-24, using a UV printer and changing the printing conditions, a clear ink having a refractive index of 1.51 (manufactured by MIMAKI ENGINEERING CO., LTD.) Is applied to almost the entire surface of the glass plate (G1). Printing is carried out using LH-100-CL-BA, and any one of transparent concavo-convex printing layers (P1) ((P1-1) to (P1-24) having a laminated structure as shown in FIG. 1A ) / Laminated glass plate (G1) was obtained.

In these examples, the printing pattern is a pattern in which, in plan view, a plurality of linear convex portions having a plurality of curved portions are formed at intervals. Specifically, as shown in FIGS. 9A to 9C, in plan view, the first straight portion and the first straight portion directed in the first direction (the obliquely upper right direction in the figure) connected smoothly through the curved portion. A plurality of linear convex portions having a pattern consisting of a second linear portion directed in the two directions (in the obliquely lower right direction in the drawing) and repeated continuously in the horizontal direction in the drawing It was set as the formed pattern.

In each example, as shown in Table 1, the number of bending of one linear convex portion, the linear length (the lengths of the first linear portion and the second linear portion (these lengths are the same. )) (Mm), distance between pole points of adjacent curved parts (D) (mm), radius of curvature of curved parts (R) (mm), ratio of linear length to radius of curvature (R) of curved parts (R) Straight line length / R), ratio of distance (D) between pole points of adjacent curved parts to radius of curvature (R) of curved part (D / R), bending angle of convex part (connected via the curved part) Angle between the first linear portion and the second linear portion) (°), line width (L) of convex portion (μm), distance (μm) between plural convex portions (S), line of convex portions The printing conditions of the ratio (S / L) of the spacing (S) of the plurality of protrusions to the width (L) and the height (H) (μm) of the protrusions were set.

The laminate obtained in each example was visually observed from the side of the transparent concavo-convex printed layer (P1) (any one of (P1-1) to (P1-24)) and the glass plate (G1) side, and the following criteria were used. The level of stereoscopic vision was assessed.
○ (Good): Regardless of the position of the light source and / or the observer, the three-dimensional structure is such that the portion where the curved portions of the plurality of convex portions included in the transparent concavo-convex printing layer (P1) are connected bulges forward or backward It was visually recognized, the depth more than glass thickness was felt, and the designability was high.
Δ (OK): Depending on the position of the light source and / or the observer, the three-dimensional shape is such that the portion where the curved portions of the plurality of convex portions included in the transparent concavo-convex printing layer (P1) are connected bulges forward or backward It was visually recognized, and there was a case where depth more than glass thickness was felt.
X (defect): The part which the curved part of the several convex part contained in a transparent uneven | corrugated printing layer (P1) continues was not visually recognized in three dimensions.
The evaluation results are shown in Table 1.

The concavo-convex layer has a pattern in which a plurality of line-shaped convex parts having a plurality of curved parts having a bending angle of 30 to 150 degrees are formed at intervals in plan view, and the line width (L) of the convex parts When the ratio (S / L) of the spacing (S) of the plurality of convex portions to that of 10 is 10 or less, the transparent asperity is visible from either the transparent asperity print layer (P1) side or the glass plate (G1) side The portion where the curved portions of the plurality of convex portions included in the printing layer (P1) are connected is three-dimensionally viewed as if it is bulging toward the front side or the back side, the depth more than the glass thickness is felt, and the designability is high .
Also, when the ratio (D / R) between the distance (D) between the extreme points of the adjacent curved portions to the radius of curvature (R) of the curved portion is 150 or less, the stereoscopic vision is enhanced, and the depth more than the glass thickness Was felt, and the design was higher.
In particular, the ratio (S / L) of the spacing (S) of the plurality of convex portions to the line width (L) of the convex portions is 3 or less, and the pole points of the adjacent curved portions to the radius of curvature (R) of the curved portion When the ratio (D / R) of the distance (D) is 0.1 to 50 and the bending angle of the curved portion is 50 to 130 °, the stereoscopic vision is increased and the depth greater than the glass thickness is felt. The design was higher.

[Example 2]
On the transparent asperity printed layer (P1-8) of the laminate obtained in Example 1-8, Al is deposited to a thickness of 100 nm as a reflective layer by a sputtering method, and it has a laminate structure as shown in FIG. A laminate of Al reflective layer (R1) / transparent uneven printed layer (P1-8) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
The obtained laminated body has a portion where the curved portions of the plurality of convex portions included in the transparent asperity printed layer (P1) are continuous even when viewed from either the Al reflective layer (R1) side or the glass plate (G1) side It was visually recognized in a three-dimensional manner as if it swelled to the near side or the far side, and a depth greater than the glass thickness was felt, and the designability was high. With respect to the laminate obtained in Example 1-8, the obtained laminate has a strong reflection along the transparent relief printing, and as a reflective layer on the transparent relief print layer (P1) along the surface irregularities. It was found that by forming a metal layer with high reflectance, it is possible to emphasize stereoscopic vision.

FIG. 9A uses a camera “TOUGH TG-5” (manufactured by Olympus Corporation), and FIGS. 9B and 9C are obtained in Example 2 while changing the magnification using an optical microscope “VHX-S15” (manufactured by Keyence Corporation). It is a surface photograph obtained by imaging the obtained laminate. In FIG. 9A, a portion where a plurality of first straight portions are continuous in the vertical direction in the drawing is relatively bright, and a portion where a plurality of second straight portions is continuous is relatively dark and bright and dark stripes are observed. The portion where a plurality of curved portions were connected in the vertical direction in the drawing is between streaks of light and dark, and it is three-dimensionally viewed as if it bulges to the front side or the back side, and a depth greater than the glass thickness is felt.

[Example 3]
A 60 nm thick ZnO (refractive index: 2.0) film was formed as a reflective layer by sputtering on the transparent asperity printed layer (P1-8) of the laminate obtained in Example 1-8, as shown in FIG. A laminate of a ZnO reflective layer (R2) / a transparent concavo-convex printed layer (P1) / a glass plate (G1) having a laminated structure was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
The obtained laminated body has a portion where the curved portions of the plurality of convex portions included in the transparent asperity printed layer (P1) are continuous even when viewed from either the ZnO reflective layer (R2) side or the glass plate (G1) side It was visually recognized in a three-dimensional manner as if it swelled to the near side or the far side, and a depth greater than the glass thickness was felt, and the designability was high. With respect to the laminate obtained in Example 1-1, the obtained laminate has a strong reflection along the transparent relief printing, and as a reflective layer on the transparent relief print layer (P1) along the surface irregularities. It was found that by forming a metal oxide layer having a large difference in refractive index with the transparent asperity printed layer, it is possible to emphasize stereoscopic vision.

[Example 4]
A UV printer was used on a glass plate (G1) to form a colored printed decorative layer (P2) of wood grain pattern. A transparent asperity printed layer (P1-8) is formed thereon in the same manner as in Example 1-1, and the transparent asperity printed layer (P1-8) / wood grain colored printed decorative layer (P2) / glass plate (G1) ) Was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the glass plate (G1) side, in the colored printing of wood grain patterns, the portion where the curved portions of the plurality of convex portions included in the transparent uneven print layer (P1) are connected is the front side or the back side It looked three-dimensionally as if it were swollen, and felt depth more than glass thickness, and the designability was high.

[Example 5]
A 100 nm thick film of Al is formed as a reflective layer on the transparent concavo-convex printed layer (P1-8) of the laminate obtained in Example 4 by a sputtering method to have a laminate structure as shown in FIG. 3, Al reflection A layered product of a layer (R1) / transparent concavo-convex printing layer (P1) / colored printed decorative layer of wood grain pattern (P2) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the glass plate (G1) side, in the colored printing of wood grain patterns, the portion where the curved portions of the plurality of convex portions included in the transparent concavo-convex printing layer (P1-8) are on the front side or It looked three-dimensionally as if it swelled to the back side, the depth more than glass thickness was felt, and the designability was high. With respect to the laminate obtained in Example 4, the reflection along the transparent relief printing becomes stronger than that of the laminate obtained in Example 4, and the contrast of the wood grain pattern is improved, and on the transparent relief printing layer (P1-8) It has been found that by forming a metal layer having a high reflectance as a reflective layer along the surface irregularities, it is possible to enhance the stereoscopic vision.

[Example 6]
A colored printed decorative layer (P2) of wood grain pattern is formed on the transparent asperity printed layer (P1-8) of the laminate obtained in Example 1-8 using a UV printer, and the colored printing of wood grain pattern is printed The laminated body of a decoration layer (P2) / transparent uneven | corrugated printing layer (P1) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate was viewed from the side of the glass plate (G1), a relative decrease in stereoscopic vision was observed as compared with the laminate obtained in Example 1-1. This is because the three-dimensional reflection image obtained by the reflection on the surface of the transparent asperity print layer which is originally intended to be visually recognized is disturbed by the reflection of the irregular asperity surface of the colored printed decorative layer (P2) of the wood grain pattern it is conceivable that. In the case of providing a colored printing decoration layer, as shown in FIG. 4, it is understood that it is preferable to form a reflective layer along the transparent concavo-convex printing layer and to form a colored printing decoration layer thereon. The

[Example 7]
On the reflective layer (R1) of the laminate obtained in Example 2, a colored printed decorative layer (P2) of wood grain pattern was formed using a UV printer to obtain a preliminary laminate. An EVA film (F1) and a glass plate (G1) were sequentially stacked on the colored print decoration layer (P2) of the grain pattern of this preliminary laminate, to obtain a temporary laminate. The temporary laminate was placed in a film bag, and the mouth of the bag was sealed by heating under vacuum to form a vacuum pack, which was heat-pressed at 100 ° C. for 2 hours. The laminate after thermocompression bonding is taken out of the bag, and a glass plate (G1) / EVA film (F1) / wood grain pattern colored printed decorative layer (P2) / Al reflective layer having a laminated structure as shown in FIG. 6 A laminate of (R1) / transparent uneven printed layer (P1-8) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the side of the glass plate (G1) stacked on the EVA film (F1), the colored print of wood grain pattern is a curved portion of a plurality of convex portions included in the transparent uneven print layer (P1) The three-dimensional view was made as if the part where was bulging toward the front side or the back side, the depth more than the glass thickness was felt, and the designability was high.

[Example 8]
A glass plate (G1) / EVA film having a laminated structure as shown in FIG. 5 in the same manner as in Example 7 except that the Al reflection layer (R1) is changed to the ZnO reflection layer (R2) formed in Example 3. A laminate of (F1) / colored and printed decorative layer with wood grain pattern (P2) / ZnO reflective layer (R2) / transparent uneven printed layer (P1-8) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the side of the glass plate (G1) stacked on the EVA film (F1), the colored print of wood grain pattern is a curved portion of a plurality of convex portions included in the transparent uneven print layer (P1) The three-dimensional view was made as if the part where was bulging toward the front side or the back side, the depth more than the glass thickness was felt, and the designability was high.

[Example 9]
As shown in FIG. 5 in the same manner as in Example 8 except that a PET film (F2) was used instead of the glass plate (G1) as the light-transmissive substrate forming the transparent asperity printed layer (P1) on the surface. Glass plate (G1) / EVA film (F1) / wooden pattern colored printed decorative layer (P2) / ZnO reflective layer (R2) / transparent uneven printed layer (P1-8) / PET film (F2) having a laminated structure ) Was obtained.
When the obtained laminate is viewed from the glass plate (G1) side, in the colored printing of wood grain patterns, the portion where the curved portions of the plurality of convex portions included in the transparent uneven print layer (P1) are connected is the front side or the back side It looked three-dimensionally as if it were swollen, and felt depth more than glass thickness, and the designability was high.

[Example 10]
A 60 nm thick ZnO (refractive index: 2.0) film was formed as a reflective layer on the transparent asperity printed layer (P1-8) of the laminate obtained in Example 1-8 by sputtering, and a UV printer was used. The colored printed decorative layer (P2) of the wood grain pattern is formed, and the colored printed decorative layer (P2) of the grain pattern / ZnO reflective layer (R2) / transparent uneven printed layer (P1) / glass plate (G1) A laminate was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the glass plate (G1) side, the portion where the curved portions of the plurality of convex portions included in the transparent concavo-convex printing layer (P1) are connected in front of or behind the colored printing of wood grain pattern It looked in three dimensions as if it swelled to the side, and the depth more than glass thickness was felt, and the designability was high.

[Example 11]
A colored printed decorative layer (P2) of wood grain pattern is formed on a reflective layer (R2) of the laminate obtained in Example 3 using a UV printer, and a colored printed decoration layer of wood grain pattern (P2) A laminate of a / ZnO reflective layer (R2) / a transparent uneven printed layer (P1-8) / a colored printed decorative layer with a grain pattern (P2) / a glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the glass plate (G1) side, in the colored printing of wood grain patterns, the portion where the curved portions of the plurality of convex portions included in the transparent concavo-convex printing layer (P1-8) are on the front side or It looked three-dimensionally as if it swelled to the back side, the depth more than glass thickness was felt, and the designability was high.

[Example 12]
On the transparent asperity printed layer (P1-8) of the laminate obtained in Example 4, 60 nm of ZnO (refractive index: 2.0) was formed as a reflective layer by sputtering to obtain a preliminary laminate . An EVA film (F1) and a glass plate (G1) were sequentially stacked on the colored print decoration layer (P2) of the grain pattern of this preliminary laminate, to obtain a temporary laminate. The temporary laminate was placed in a film bag, and the mouth of the bag was sealed by heating under vacuum to form a vacuum pack, which was heat-pressed at 100 ° C. for 2 hours. The laminated body after thermocompression bonding is taken out of the bag, and a glass plate (G1) / EVA film (F1) / ZnO reflective layer (R2) / transparent uneven printed layer (P1-8) having a laminated structure as shown in FIG. 7 ) / A laminated body of colored printed decorative layer of wood grain (P2) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the side of the glass plate (G1) stacked on the EVA film (F1), the curves of the plurality of convex portions included in the transparent concavo-convex printing layer (P1) before coloring printing of wood grain pattern The three-dimensional view was made so that the portion where the parts were connected was bulging toward the front side or the back side, the depth more than the thickness of the glass was felt, and the designability was high.

[Example 13]
Using a UV printer, ZnO (refractive index: 2.0) is deposited to a thickness of 60 nm as a reflective layer on the transparent asperity printed layer (P1-8) of the laminate obtained in Example 4 by sputtering A colored printed decorative layer (P2) of wood grain pattern was formed to obtain a preliminary laminate. An EVA film (F1) and a glass plate (G2) were sequentially stacked on the colored print decoration layer (P2) of the grain pattern of this preliminary laminate, to obtain a temporary laminate. The temporary laminate was placed in a film bag, and the mouth of the bag was sealed by heating under vacuum to form a vacuum pack, which was heat-pressed at 100 ° C. for 2 hours. The laminate after thermocompression bonding is taken out of the bag, and a glass plate (G1) / EVA film (F1) / wood-patterned colored printed decorative layer (P2) / ZnO reflective layer having a laminated structure as shown in FIG. 8 A laminate of (R2) / transparent uneven printed layer (P1) / colored and printed decorative layer with grain pattern (P2) / glass plate (G1) was obtained. The level of stereoscopic vision was visually evaluated for the obtained laminate.
When the obtained laminate is viewed from the side of the glass plate (G1) stacked on the EVA film (F1), the colored print of wood grain pattern is a curved portion of a plurality of convex portions included in the transparent uneven print layer (P1) The three-dimensional view was made as if the part where was bulging toward the front side or the back side, the depth more than the glass thickness was felt, and the designability was high.

[Examples 14 to 16]
Fig. 13 (Example 14), Fig. 14 (Example 15), using a UV ink and using clear ink (LH-100-CL-BA) having a refractive index of 1.51 on a glass plate (G1). Or form the transparent concavo-convex printing layer (one of (P14)-(P16)) of the pattern which is shown in Figure 15 (example 16), transparent concavo-convex printing layer (any of (P14)-(P16)) / Laminate of glass plate (G1) was obtained.

The transparent concavo-convex printing layers (P14) to (P16) are a first straight part directed in a first direction smoothly connected via a curved part and a second straight line directed in a second direction in plan view. A plurality of line-shaped convex parts consisting of parts have a plurality of convex part groups periodically formed at equal pitches.
The transparent concavo-convex printing layers (P14) to (P16) are respectively four (example 14), eight (example 15), 36 (36 examples) radially extending in different radial directions from one central portion without overlapping each other. The convex part group of Example 16) is included.
In these examples, paying attention to the first convex portion group and the second convex portion group adjacent to each other, in the first convex portion group, the direction in which the curved portions of the convex portions formed at intervals are continued In the second group of convex portions, the direction in which the curved portions of the plurality of convex portions formed at intervals are continuous is set as a second linear direction, and the first linear direction and the second linear direction. Is 90 ° (Example 14), 45 ° (Example 15), and 10 ° (Example 16), where θ is the angle between them.
In these examples, the maximum width W _max of each convex portion group is 2.5 mm. Moreover, radial direction length R of each convex part group was 5 mm (Example 14), 10 mm (Example 15), and 30 mm (Example 16), respectively.
In these examples, the first straight line direction and the second straight line extend from the intersection of the first straight line direction and the second straight line direction with the boundary between the first convex group and the second convex group. Match the bisector with the direction.

Table 2 shows various data of one linear convex portion for each example.
In these examples, since there is a portion where the length of the convex portion changes even in one convex portion group, data of convex portions of a plurality of portions of the same length are arranged in one convex portion group. It has been described.
Further, in these examples, since the end portions are curved portions, the “curved portion between the first straight portion and the second straight portion and the curved portion at one end portion are used as“ the adjacent curved portions ”. Adopted. The bending angle of the end curve was 135 °.
Each of the laminates obtained in these examples had an appearance like a sculpted facet glass when viewed from the glass plate (G1) side, and the designability was high.

[Example 17]
A laminate of transparent asperity print layer (P17) / glass plate (G1) was obtained in the same manner as in Example 14 except that the pattern of the transparent asperity print layer was changed to those shown in FIG. 13 to FIG.
In this example, while setting the design of each of the convex portions 22A and 22C in the same manner as in Example 14, the length of the linear portion of each convex of the convex portions 22B and 22D is shortened by 0.68 mm. The maximum width of the convex portions 22B and 22D is smaller than the maximum width of the convex portions 22A and 22C. In addition, the length of the linear part of each convex part said here is the data of the convex part of the part arranged in multiple numbers by the same length in one convex part group. In this example, as illustrated, the boundary line MA1 between the first convex group and the second convex group is a first linear direction extending from the intersection of the first linear direction and the second linear direction. And a second straight line direction in which the bisector NA1 is moved in parallel.
The laminate obtained by designing in this manner, like the examples 14 to 16, when viewed from the side of the glass plate (G1), an appearance like a facetted glass having an engraving was obtained, and the designability was high.

[Examples 17 to 20]
Using a clear ink (LH-100-CL-BA) having a refractive index of 1.51 on a polycarbonate film (F3) by gravure printing, the transparent concavo-convex printing layer ((P17) to (P17) of the pattern shown in FIG. One of (P20) was formed to obtain a laminate of a transparent unevenly printed layer (one of (P17) to (P20)) / polycarbonate film (F3). Next, a glass plate (G1) is laminated with a transparent double-sided tape (T1) on the surface opposite to the surface on which the transparent asperity printed layer of the polycarbonate film of these laminates is formed, so that air does not enter. A laminate of a transparent concavo-convex printed layer (any one of (P17) to (P20)) / polycarbonate film (F3) / transparent double-sided tape (T1) / glass plate (G1) having a laminated structure as shown in Obtained.

The transparent concavo-convex printing layers (P17) to (P20) are a first straight part directed in a first direction smoothly connected via a curved part and a second straight line directed in a second direction in plan view. A plurality of line-shaped convex parts consisting of parts have a plurality of convex part groups periodically formed at equal pitches.
The transparent asperity print layers (P17) to (P20) include four convex groups radially extending in different radial directions from one central portion without overlapping each other.
In these examples, paying attention to the first convex portion group and the second convex portion group adjacent to each other, in the first convex portion group, the direction in which the curved portions of the convex portions formed at intervals are continued In the second group of convex portions, the direction in which the curved portions of the plurality of convex portions formed at intervals are continuous is set as a second linear direction, and the first linear direction and the second linear direction. Where θ is 90 °.
In these examples, the maximum width W _max of each convex portion group is 2.5 mm. Moreover, radial direction length R of each convex part group was 5 mm (Example 14), 10 mm (Example 15), and 30 mm (Example 16), respectively.

In these examples, the first straight line direction and the second straight line extend from the intersection of the first straight line direction and the second straight line direction with the boundary between the first convex group and the second convex group. Match the bisector with the direction.
Table 3 shows various data of one linear convex portion for each example.
In these examples, since there is a portion where the length of the convex portion changes even in one convex portion group, data of convex portions of a plurality of portions of the same length are arranged in one convex portion group. It has been described.
Further, in these examples, since the end portions are curved portions, the “curved portion between the first straight portion and the second straight portion and the curved portion at one end portion are used as“ the adjacent curved portions ”. Adopted. The bending angle of the end curve was 135 °.
When the laminate obtained in each of Examples 17 to 20 was visually observed from the side of the glass plate (G1), an appearance like a facetted glass having an engraving was obtained, and the designability was high. Further, the glass plate (G1) appeared to be iridescent, and the designability was high. This rainbow color appeared to have a stronger contrast in the laminates of Examples 19 and 20 than in the laminates of Examples 17 and 18. It was confirmed that the iridescent contrast becomes stronger as the line width (L) of the convex portions and the interval (S) of the convex portions of the transparent asperity printed layer become smaller.

[Example 21]
A 50 nm thick film of ZnS (refractive index: 2.3) was formed as a reflective layer on the transparent concavo-convex printed layer (P19) of the laminate obtained in Example 19 as a reflective layer by a sputtering method, as shown in FIG. A laminate of ZnS reflective layer (R3) / transparent uneven print layer ((P19) / polycarbonate film (F3) / transparent double-sided tape (T1) / glass plate (G1) having the above was obtained. When viewed from the side of the glass plate (G1), the appearance like a sculpted facetted glass was obtained and the designability was high, and the obtained laminate was to the laminate obtained in Example 19 The reflection along the transparent uneven print layer was intensified, the stereoscopic vision was emphasized, and the designability was high.
[Example 22]
A laminate of a transparent relief print layer (P19) / polycarbonate film (F3) was obtained in the same manner as in Example 19. Next, ZnS (refractive index: 2.3) is deposited to a thickness of 50 nm as a reflective layer on the transparent concavo-convex printed layer (P19) by sputtering method, ZnS reflective layer (R3) / transparent concavo-convex printed layer ((P19) Next, on the surface of the polycarbonate film (F3) of this laminate opposite to the surface on which the transparent asperity print layer (P19) was formed, a transparent asperity print layer (in plan view) Print a blue color print decoration layer (P3) in a region where P19) is not formed using a UV printer, and use ZnS reflective layer (R3) / transparent concavo-convex print layer ((P19) / polycarbonate film (F3) / Next, a laminate of the color print decoration layer (P3) was obtained, and then, the glass plate (G1) was prevented from entering the air with the transparent double-sided tape (T1) on the color print decoration layer (P3) of this laminate. Stick to In addition, the ZnS reflective layer (R3) / the transparent concavo-convex printing layer (P19) / polycarbonate film (F3) / the color printing decorative layer (P3) / the transparent double-sided tape (T1) having a laminated structure as shown in FIG. When the obtained laminate is viewed from the side of the glass plate (G1), it looks like a faceted glass in which the surface is engraved on a colored glass, and the designability is obtained. it was high.
[Example 23]
A ZnS reflective layer (R3) / a transparent concavo-convex printed layer ((P19) / polycarbonate film (F3) / a color print decorative layer (P3) was obtained by the same method as in Example 22. Next, this ZnS reflective layer (R3) A transparent double-sided tape (T1) on top of the glass plate (G1) so as to prevent air from entering, and having a laminated structure as shown in FIG. 20, glass plate (G1) / transparent double-sided tape (T1) / A laminate of ZnS reflective layer (R3) / transparent uneven print layer (P19) / polycarbonate film (F3) / color print decoration layer (P3) was obtained, and the obtained laminate was observed from the glass plate (G1) side. When it did, the appearance like a faceted glass with the colored layer which put engraving on colored glass was obtained, and the designability was high.
[Example 24]
In the region on the other side of the transparent concavo-convex printing layer (P19) of the laminate obtained in Example 19 on the side opposite to the side with the polycarbonate film (F3), in the region where the transparent concavo-convex printing layer (P19) is not formed in plan view Color printing decoration layer (P3) / transparent concavo-convex printing layer (P19) / polycarbonate film having a laminated structure as shown in FIG. 21 in which a blue color printing decoration layer (P3) is printed using a UV printer A laminate of (F3) / transparent double-sided tape (T1) / glass plate (G1) was obtained. When the obtained laminate was viewed from the glass plate (G1) side, an appearance like a facet glass with a colored layer obtained by engraving a glass whose surface was colored was obtained, and the designability was high.
[Example 25]
On the color print decoration layer (P3) of the laminate obtained in Example 24, 50 nm thick ZnS (refractive index: 2.3) was formed as a reflective layer by sputtering, and lamination as shown in FIG. A laminate of ZnS reflective layer (R3) / color print decoration layer (P3) / transparent uneven print layer (P19) / polycarbonate film (F3) / transparent double-sided tape (T1) / glass plate (G1) having a structure Obtained. When the obtained laminate was viewed from the glass plate (G1) side, an appearance like a facet glass with a colored layer obtained by engraving a glass whose surface was colored was obtained, and the designability was high. Moreover, with respect to the laminate obtained in Example 24, in the laminate obtained, the reflection along the transparent concavo-convex printed layer was strong, the stereoscopic vision was emphasized, and the designability was high.

The laminate of the present invention is a building member such as a window material, a floor material, a wall material, a ceiling material, an interior member such as a table top, an exterior material of white goods such as a washing machine and a refrigerator, a mobile phone, a portable information terminal It can be preferably used for applications such as electronic devices such as (PDA).
The specification, claims, drawings and abstract of Japanese Patent Application No. 2018-3177 filed on Jan. 12, 2018 and Japanese Patent Application No. 2018-141344 filed on July 27, 2018. The entire contents of the document are incorporated herein by reference and incorporated as a disclosure of the specification of the present invention.

1A to 1H: laminate, 11: translucent substrate, 12: translucent member, 20: uneven layer, 21: convex portion, 21A to 21C: pole of curved portion, 30: reflective layer, 40, 41: Decorative layer, 50: translucent resin film, BP: curved portion, CP: connection portion, LP1: first straight portion, LP2: second straight portion

Claims (20)

1. A laminate comprising: a translucent base material; and a concavo-convex layer having a plurality of convex portions in the form of lines in a plan view on the surface,
   The concavo-convex layer has a pattern in which a plurality of linear convex parts having a curved part with a bending angle of 30 to 150 ° are formed with a space between them in a plan view, and a line width of the convex parts ( A laminate characterized in that the ratio (S / L) of the spacing (S) of the plurality of convex portions to L) is 10 or less.
2. The convex portion includes a first linear portion extending in a first direction smoothly connected via the curved portion and a second linear portion extending in a second direction in plan view. The laminated body as described in 1.
3. The layered product according to claim 2 whose ratio of the length of said 1st straight part or said 2nd straight part to the curvature radius of said curving part is 150 or less.
4. The ratio (S / L) of the spacing (S) of the plurality of protrusions to the line width (L) of the protrusions is 3 or less, and the first straight portion or the first straight portion to the radius of curvature of the curved portion The ratio of the length of the straight part of 2 is 0.1 to 50,
   The laminate according to claim 2 or 3, wherein a bending angle of the curved portion is 50 to 130 °.
5. The convex portion has a plurality of the curved portions in plan view, and a ratio (D / R) of a distance (D) between poles of the adjacent curved portions to a radius of curvature (R) of the curved portion. The laminate according to any one of claims 1 to 4, wherein) is 150 or less.
6. The laminate according to any one of claims 1 to 5, further comprising a reflective layer formed along the surface asperities of the asperity layer.
7. The laminate according to claim 6, wherein the reflective layer comprises a high refractive index material and / or a metal having a refractive index difference of 0.4 or more with the uneven layer.
8. The reflective layer includes at least one metal selected from the group consisting of Al and Ag, and / or at least one high refractive index material selected from the group consisting of TiO ₂ , Nb ₂ O ₅ , and ZnO. The laminated body of Claim 7.
9. The laminate according to any one of claims 1 to 8, wherein the difference in refractive index between the light transmitting substrate and the uneven layer is within 0.3.
10. The laminate according to any one of claims 1 to 9, wherein the translucent substrate is a glass plate or a translucent resin film.
11. The laminate according to any one of claims 1 to 10, wherein the uneven layer comprises a resin.
12. The layered product according to claim 2 in which said concavo-convex layer contains a convex part group which said curved part of said convex part formed in multiple numbers at intervals in planar view continued in a straight line shape.
13. The uneven layer includes a plurality of convex groups extending in a plurality of radial directions without overlapping with each other from one central portion in plan view,
    Focus on the first convex group and the second convex group adjacent to each other,
    In the first group of convex portions, a direction in which the curved portions of the plurality of convex portions formed at intervals are continuous is defined as a first linear direction.
    In the second group of convex portions, a direction in which the curved portions of the plurality of convex portions formed at intervals are continuous is defined as a second linear direction.
    When an angle between the first linear direction and the second linear direction is θ,
    θ is 10 to 170 °, and the boundary between the first convex group and the second convex group extends from the intersection of the first linear direction and the second linear direction. The lamination according to claim 12, which is parallel to a bisector of a first linear direction and said second linear direction or a straight line of an angle within ± θ / 4 from said bisector. body.
14. The laminate according to claim 13, wherein θ is 45 to 135 °.
15. The laminate according to any one of claims 1 to 14, wherein the end of the convex portion is a bent portion having a bending angle of 105 to 165 ° in a plan view.
16. The laminate according to any one of claims 1 to 15, wherein a sum (L + S) of a line width (L) of the convex portion and an interval (S) of the plurality of convex portions is 5 to 200 μm.
17. The laminate according to any one of claims 1 to 16, wherein a sum (L + S) of the line width (L) of the convex portion and the interval (S) of the plural convex portions is 5 to 80 μm.
18. The laminate according to any one of claims 1 to 17, further comprising a decorative layer.
19. The laminated body of Claim 18 which has the said decoration layer between the said translucent base material and the said uneven | corrugated layer.
20. The layered product according to any one of claims 18 or 19 in which said decoration layer is formed in a field in which said concavo-convex layer is not formed in plane view.

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