JPH11291696A - Method and device for manufacturing decorative sheet for which refractive effect of light is utilized, and roller having groove which is provided for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a decorative sheet wherein the decorative property is increased by utilizing a refractive effect of light. SOLUTION: A transparent sheet 1a which is fed from a paper feeding part, passes through a printing part 10, and after a printing layer 1c is formed on one of the surfaces, the transparent sheet 1a is guided by a guide roll 13, and introduced to an uneven layer forming part 20, and on the other surface of the transparent sheet 1a, an uneven layer 2a is formed by the uneven layer forming part 20, and is taken up by a taking-up part. For the forming of the uneven layer 2a, a paste resin 2 is applied on the transparent sheet 1a by a paste feeding pump 4, and a fixed roll 3a having grooves scrape off the paste resin 2 along the shapes of grooves 31, 31..., and the uneven layer 2a of a lens shape is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a table cover,
The present invention relates to a method of manufacturing a decorative sheet used as a material for a shower curtain, a window decoration sheet, a bag, and the like, an apparatus and a grooved roller used for the method, and a decorative sheet manufactured by using the manufacturing method.

[0002]

2. Description of the Related Art Heretofore, as a decorative body whose pattern or color changes depending on the viewing angle, or a decorative body that gives a three-dimensional effect to a flat sheet, there is a decorative body using a lenticular plate formed of a camo-shaped lens. When using a lenticular plate to create a postcard-like decoration, for example,
A printing sheet on which a pattern is printed is overlapped with a lenticular plate having a plurality of lenses arranged on one side. When stacking these, it is necessary to precisely match the pitch of the pattern of the printed sheet and the pitch of the lenticular plate, so that extremely high accuracy is required in the production process, cost is high, and defective products are generated. Cheap.

[0003] In order to produce a 3D (three-dimensional) effect,
It is common to create a three-dimensional image photographically,
Only relatively small ones can be created. Further, since the lenticular plate is placed on the paper as a material, the lenticular plate becomes like a photographic paper, and thus lacks flexibility. Further, in the method of producing by overlapping printing, there is a problem that since the alignment is performed with extremely fine dimensions, an accurate printing technique is required, and the production is difficult.

[0004] The applicant of the present application has solved the above-mentioned problems that only relatively small ones can be made and lacks flexibility, and large and soft sheets such as table covers and shower curtains have been used. There has been proposed a decorative sheet in which a pattern or color is changed depending on a viewing angle, or a processing in which a 3D effect is provided (Japanese Utility Model Registration No. 3009593, JP-A-8-337100, and JP-A-8-337100). 9-207254). The decorative sheet according to these proposals includes a lens layer on one surface of a transparent sheet and a printed layer on which a pattern is printed on the other surface. Such decorative sheets appear to change in pattern or color when the viewing angle is changed due to the action of the lens. Alternatively, the pattern formed on the flat sheet looks three-dimensional.

The present applicant has proposed a decorative sheet having a 3D effect by providing an embossing layer instead of a lens layer (Japanese Patent Application No. 9-361560). The pattern formed on the large, flexible sheet looks three-dimensional.

[0006]

In such a decorative sheet, a pattern is printed in advance on one surface of a soft synthetic resin base material, and in another process, the embossing roll is heated after heating the other surface. To form a lens-shaped uneven layer, for example. In this manufacturing method, since the base material is soft, the position of the unevenness is likely to shift during pressing. In addition, since the base material is heated, unevenness cannot be accurately formed. Therefore, it is difficult to align the uneven layer and the pattern. When the positions of the unevenness and the pattern are shifted, the above-described change in the pattern, color, or three-dimensional effect cannot be obtained.

Therefore, the applicant of the present application has proposed a decorative sheet which uses a PET (polyethylene terephthalate) film having an appropriate hardness as a transfer paper and is easy to align even if the base material is a soft sheet. In this method, first, a predetermined pattern is printed on transfer paper in advance. Then, the transfer paper is overlaid on the soft transparent base material and pressed with an embossing roll to form an uneven layer on one surface of the base material. At this time, the soft substrate supported by the transfer paper has an appropriate hardness,
The positioning of the unevenness is performed accurately. At the same time, the printed pattern of the transfer paper is thermally transferred to the other surface of the base material. By this method, it is possible to form irregularities and patterns on both surfaces of the soft base material with accurate alignment.

[0008] According to the manufacturing method as described above, it is possible to easily perform alignment on both sides of the flexible sheet and manufacture the decorative sheet having the above-described decorative effect, but the cost of the transfer paper and the transfer process are extra. There was a problem that it was necessary.

The present invention has been made in view of the above circumstances, and is intended to provide a large and soft base material by applying a paste material to one surface and forming the same into irregularities while running the transparent base material. It is still another object of the present invention to provide a method and an apparatus for manufacturing a decorative sheet that can easily perform alignment between a concavo-convex layer on both surfaces and a pattern, reduce the number of steps, and can be manufactured at low cost. In addition, by performing a process of printing a predetermined pattern on the other surface of the base material continuously with the process of forming such a concavo-convex layer, the concavo-convex layer and the printed layer are formed on the respective surfaces in the same traveling path. It is an object to provide a method and apparatus that can be formed.

It is still another object of the present invention to provide a grooved roller having grooves for forming a paste material applied on one surface of the transparent base material into an uneven shape while running the transparent base material.

It is still another object of the present invention to provide a decorative sheet having an uneven layer formed by applying a paste material to one surface of a running transparent base material and forming an uneven shape.

[0012]

According to a first aspect of the present invention, there is provided a method for manufacturing a decorative sheet comprising a transparent substrate having an uneven layer on one surface and having decorative properties by a light refraction effect. A step of running the base material, and a step of forming the uneven layer while running the transparent base material. The step of forming the uneven layer applies a paste material to one surface of the transparent base material. The method includes a coating step, a forming step of forming the paste material into an uneven shape, and a solidifying step of solidifying the formed paste material.

According to the first aspect of the present invention, the uneven layer for obtaining decorativeness utilizing the refraction effect of light is formed by molding a paste material while the transparent substrate is running. Is large or flexible,
The unevenness can be formed at an accurate position, and the alignment with the printing layer becomes easy.

According to a second aspect of the present invention, there is provided a method for manufacturing a decorative sheet.
In the first invention, the forming step includes a step of scraping a surface of the paste material by a grooved roller fixed to one surface of the running transparent base material.

[0015] In the second invention, the grooved roller is non-rotatably fixed at a position facing a surface of the transparent substrate on which the paste material is applied, and the paste applied to the transparent substrate is fixed. Contact the surface of the material. Since the transparent base material is running, the paste material is scraped into the shape of a groove on the peripheral surface of the roller. Therefore, without imposing an extra load on the transparent substrate, and since the uneven layer can be formed without excessively heating the transparent substrate, even if the transparent substrate is large, or has flexibility. Alignment with the printing layer is facilitated.

According to a third aspect of the present invention, there is provided a method of manufacturing a decorative sheet.
In the first invention, the molding step includes a step of heating the paste material and a step of pressing the paste material by a grooved roller rotatably arranged opposite one surface of the running transparent base material. I do.

According to the third aspect of the present invention, when the grooved roller has a structure in which the roller surface is heated by, for example, flowing steam inside, the paste material is formed into a shape corresponding to the groove by pressing. While heating, the paste material can be heated to a temperature at which the paste material is solidified. Therefore, since the uneven layer can be formed without affecting the transparent substrate, even if the transparent substrate is large or has flexibility, it is formed on the surface on the opposite side of the transparent substrate. Alignment with the printed layer to be performed becomes easy.

According to a fourth aspect of the present invention, there is provided a decorative sheet manufacturing method comprising:
In the third invention, the uneven layer includes a second transparent substrate between the transparent substrate and the paste material or on a side of the paste material far from the transparent substrate.

In the fourth invention, for example, when the second transparent base material is covered on the surface of the paste material, heating and pressing are performed from above the second transparent base material by a grooved roller. There is no need to adjust the physical properties such as viscosity and adhesiveness of the paste material with high precision. Further, for example, when a paste material is applied to the surface of the second transparent substrate, the printed layer can be multilayered, and a decorative sheet having more excellent decorative properties can be manufactured.

[0020] The method for producing a decorative sheet according to the fifth invention comprises:
In any one of the first to fourth inventions, a predetermined pattern is printed on a surface of the transparent substrate opposite to the concave-convex layer while the transparent substrate is running, continuously in the process of forming the concave-convex layer. It is characterized by having a process of forming a printing layer.

According to the fifth aspect of the present invention, since the printing layer and the uneven layer can be formed on both sides of the transparent base material in the same traveling path of the transparent base material, alignment of both surfaces can be facilitated. There is no need for a storage area for the formed sheets only.

According to a sixth aspect of the present invention, there is provided a decorative sheet manufacturing method comprising:
In any one of the first to fourth inventions, the paste material includes a thickening substance.

According to the sixth aspect of the present invention, the physical properties of the paste, such as viscosity and tackiness, can be appropriately adjusted for forming the surface by adding a thickening substance.

According to a seventh aspect of the present invention, there is provided a decorative sheet manufacturing apparatus comprising:
In a manufacturing apparatus for a decorative sheet having an uneven layer on one surface of a transparent substrate and having decorative properties by a light refraction effect, a running means for running the transparent substrate, and applying a paste material on one surface of the transparent substrate. An applicator, a grooved roller having a circumferential groove on a peripheral surface thereof and forming the paste material in an uneven shape, and a solidifying means for solidifying the formed paste material to form the uneven layer. It is characterized by.

According to the seventh aspect of the present invention, since the uneven layer for obtaining decorativeness utilizing the light refraction effect is formed by molding a paste material while the transparent substrate is running, Is large or flexible,
The unevenness can be formed at an accurate position, and the alignment with the printing layer becomes easy.

An apparatus for manufacturing a decorative sheet according to the eighth invention comprises:
In a seventh aspect, a partition plate is provided between the coating unit and the grooved roller in such a manner as to partition the grooved roller in the axial direction.

According to the eighth aspect, by applying paste materials of different colors with the partition plate as a boundary, it is possible to form uneven layers of a plurality of colors without mixing colors. Thereby, a decorative sheet having more excellent decorative properties can be manufactured.

According to a ninth aspect of the present invention, there is provided a decorative sheet manufacturing apparatus comprising:
The seventh or eighth invention is characterized in that a printing means for printing a predetermined pattern on a surface of the transparent substrate opposite to the uneven layer is provided on the upstream or downstream side of travel of the transparent substrate.

According to the ninth aspect, the printing layer and the uneven layer can be formed on both sides of the transparent substrate in the same traveling path of the transparent substrate, so that the alignment of both surfaces can be facilitated, and There is no need for a storage area for the formed sheets only.

A grooved roller according to a tenth aspect of the present invention is a grooved roller used for carrying out the forming step of the manufacturing method according to any one of the first to fifth aspects. Is formed.

In the tenth invention, since the grooves are formed by etching, the light beam is not directly applied to the rollers, but is applied from above after coating with a photosensitive liquid. Grooves can be formed without melting. Further, since the groove is formed on the peripheral surface of the roller, the groove can be formed with high precision without chipping unlike the case of forming the groove on the thin blade.

The decorative sheet according to the eleventh invention is characterized in that the uneven layer is formed by implementing the manufacturing method according to any one of the first to fifth inventions.

In the eleventh invention, since the positioning of the uneven layer on one surface of the transparent substrate and the printed layer on the other surface can be easily and accurately performed, a large and flexible transparent substrate is used. A decorative sheet with excellent decorativeness can be manufactured.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. First Embodiment FIG. 1 is a schematic diagram showing a configuration of a decorative sheet manufacturing apparatus according to a first embodiment. In the figure, reference numeral 10 denotes a printing unit, which has the same function as the printing unit provided in the unit type gravure rotary printing press. The transparent sheet 1a supplied from the paper feeding unit is
After a predetermined pattern is printed on one surface after passing through the printing unit 10, it is guided by the guide roll 13 and
Is formed on the other surface of the transparent sheet 1a by the uneven layer forming section 20, and is guided by the guide roll 13 and wound by the winding section.

The printing unit 10 includes a tank 14 for loading a printing ink 15, a metal printing roll 11 disposed above the tank 14, and a rubber pressing roll 12 opposed to the printing roll 11. Are arranged in parallel, and a guide roll 13 for guiding the transparent sheet 1a is arranged between the units. Printing roll 11
Is disposed so that approximately half the circumference thereof is immersed in the printing ink 15, and the transparent sheet 1 a
Have an enough interval to pass. Printing roll 1
1 is provided with a doctor plate and is provided with a printing ink 15.
Is poured into the pattern groove of the print roll 11 or excess ink is scraped off.

The number of printing units is set according to the type of printing color. In the present embodiment, five units of the first to fifth units are arranged in parallel. The transparent sheet 1a is introduced between the printing roll 11 and the pressing roll 12, runs by the rotation of the printing roll 11 and the pressing roll 12, and the printing ink adhered to the printing roll 11 is applied to a predetermined surface of the transparent sheet 1a. Applied to the area. In each unit, the printing ink is similarly applied to the same surface of the transparent sheet 1a,
Printing of a plurality of colors is sequentially performed.

The concavo-convex layer forming section 20 includes a first reversing roll 5a for reversing the processing surface of the transparent sheet 1a introduced from the printing section 10, a rubber driving roll 16 for running the transparent sheet 1a, and a A second reversing roll 5b, a paste supply pump 4 disposed on one side of the reversal roll 5b, and a reversal roll 5
b, a grooved fixed roll 3a which is fixed in a non-rotatable manner with the axial direction being substantially parallel to the reversing roll 5b, and a roll which is disposed above the reversing roll 5b. A heating roll 17 whose surface is heated, a cooling roll 18 provided opposite thereto and whose roll surface is cooled by injection of a cooling medium, and a plurality of guide rolls for guiding the printed transparent sheet 1a between these rolls 13 are provided.

FIG. 2 is a perspective view showing the positional relationship among the reversing roll 5b, the paste supply pump 4, and the grooved fixed roll 3a shown in FIG. FIG. 3 is a perspective view showing the structure of the grooved fixed roll, and FIG. 4 is a cross-sectional view of a surface including the axis of the grooved fixed roll. The paste supply pump 4 uses a mono pump, and can discharge a paste having a relatively high viscosity. The paste supply pump 4 is, as shown in FIG.
A nozzle having the same size as the width of the transparent sheet 1a is provided at the tip thereof, discharges the paste resin 2 from the nozzle, and extends over the entire width of the transparent sheet 1a running along the peripheral surface of the reversing roll 5b. 2 is applied.

The grooved fixed roll 3a has a roll shape obtained by applying a copper plating to a cylindrical aluminum.
A plurality of grooves 31 in the circumferential direction are formed on the peripheral surface in parallel at an equal pitch. As shown in FIG. 4, the groove 31 has a semi-cylindrical concave surface having an arcuate cross section. The grooved fixing roll 3a is fixed at a predetermined distance from the reversing roll 5b, and is brought into contact with the surface of the paste resin 2 applied by the paste supply pump 4 to form the transparent sheet 1a.
, The paste resin 2 is scraped and formed into a lens shape to form the uneven layer 2a. The transparent sheet 1 on which the uneven layer 2a is formed is heated by passing through the heating roll 17, and is cooled by passing through the cooling roll 18. And
It is introduced into a winding section by a guide roll 13 and wound around a winding shaft 19.

The grooved fixed roll 3a having the above-described structure is manufactured in the following process. FIG. 5 is a flowchart showing a procedure for manufacturing the grooved fixed roll, and the description will be made based on the flowchart. First, the length is copper-plated on the surface
A roll having a diameter of 200 cm and a radius of 5 cm is coated with the photosensitive solution (step S11). The photosensitive solution is, for example, a laser coat LD-100 (MEK 45%, PGMEA4) manufactured by Tokyo Ohka.
5%). After the coating with the photosensitive liquid, a protective coating for preventing oxygen contact is performed using, for example, an overcoat OC-40 (4% aqueous solution of polyvinyl alcohol) manufactured by Tokyo Ohka.

Next, the peripheral surface of the roll is irradiated with a laser beam (step S12). Using an argon ion laser beam, the surface is irradiated while rotating the roll about the axis. The irradiation position is moved in the axial direction at a pitch of 0.2 mm to 0.6 mm in the length direction of the roll for each rotation of the roll. The irradiation power of the laser beam and the rotation speed of the roll are set so that the depth of the groove is 80 μm to 300 μm. After exposure by laser light irradiation, the roll is developed (step S13). Development is for example 0.5% of sodium carbonate
Perform by immersing the roll in the aqueous solution for a predetermined time, and after washing with water,
dry. Then, it is immersed in a ferric chloride solution to perform etching (step S14). By such etching, a portion of the roller peripheral surface that has not been irradiated with the laser beam is removed, and grooves 31 are formed.

As described above, the grooved fixed roller 3a is manufactured by performing etching after laser beam irradiation. Normally, a laser beam is directly applied to a rubber base material when forming a flexographic plate or the like. However, when a grooved fixed roller 3a is formed using copper-plated aluminum as a material, a laser beam is used. When directly irradiated, copper is dissolved due to high heat. However, since the grooved fixed roller 3a of the present embodiment coats the surface of the roller with a photosensitive liquid and irradiates the laser light from above, it does not dissolve.
Are formed on the surface of the roller.

Usually, a doctor blade is used to keep the thickness of the paste material applied to the running sheet constant. The doctor blade is fixed at a predetermined distance from the surface of the sheet, and the thin blade portion is brought into contact with the paste material to make its thickness constant. In order to form the above-mentioned uneven layer with a doctor blade, it is necessary to form a groove in the thin blade portion. However, the thickness of the doctor blade is extremely thin, and it is extremely difficult to form grooves in this portion at an extremely fine pitch such as 0.2 mm to 0.3 mm. On the other hand, in the grooved fixed roller 3a of the present invention, since the grooves are formed on the peripheral surface of the columnar shape, the grooves 31 having the pitch of 0.2 mm to 0.3 mm are used.
31 can be easily formed. By fixing such a grooved fixing roller 3a at a predetermined interval from the sheet, the paste roller 2 comes into contact with the paste resin 2 and is scraped off.
The lens-shaped uneven layer 2a corresponding to the shape of 1, 31,... Is formed.

When a decorative sheet is manufactured using the apparatus having the above-described configuration, first, a long transparent sheet 1a is set on a side of the printing unit 10 in a state where it is wound in a roll shape so that it can be pulled out. The transparent sheet 1a is formed of a synthetic resin having flexibility and light transmittance. The tanks 14, 14,... Are filled with printing inks of respective colors. Then, the transparent sheet 1 a is pulled out and passed between the printing roll 11 and the pressing roll 12. As the transparent sheet 1a passes through each printing unit, the printing ink 1 of five colors is formed on one surface.
5 is applied. Table 1 shows the composition of the printing ink 15 for each color.
Shown in

[0045]

[Table 1]

The guide layer 13 passes through the uneven layer forming section 20
The transparent sheet 1a introduced into the first reversing roll 5
a, the driving roll 16 and the second reversing roll 5b. The transparent sheet 1a travels by using the reversing rolls 5a and 5b so as to expose the non-printed surface. The paste resin 2 having a predetermined viscosity is prepared, and the paste resin 2 is discharged from the paste supply pump 4 and applied to the exposed surface of the transparent sheet 1a. Grooved fixed roll 3a
Are fixed so as not to rotate, and the paste resin 2 is scraped according to the shape of the grooves 31, 31... By moving the transparent sheet 1a to form the lens-shaped uneven layer 2a. Paste resin 2 mainly contains polyvinyl chloride and has a putty-like viscosity, and the composition is shown in Table 2.

[0047]

[Table 2]

Paste resin 2 shown in Table 2 shows two types, colorless and transparent (formulation A-1) and blue and transparent (formulation A-2), both of which are formulated with a thickener to adjust to high viscosity. However, it has an appropriate adhesiveness, and either one may be used. Although the above-mentioned thickener is made of SiO ₂ , it is not limited to this, and fine powder CaCO ₃ or the like may be used. Due to such physical properties of the paste resin 2,
Application to the transparent sheet 1a along the peripheral surface of the reversing roll 16 is realized, and the lens can be formed into a lens shape by scraping the grooved fixed roll 3a.

Transparent sheet 1a on which uneven layer 2a is formed
Is transferred to the peripheral surface of the heating roll 17 and the paste resin 2
Is heated to a temperature (eg, 170 ° C.) at which the particles gel.
Thereby, the uneven layer 2a is solidified. Thereafter, the transparent sheet 1 a is guided by the cooling roll 18 to be cooled, and is wound around the winding shaft 19.

As described above, in the apparatus of this embodiment, the paste resin 2 is applied to one surface of the running transparent sheet 1a.
Since the transparent sheet 1a is large and flexible, the uneven layer 2a can be formed at an accurate position, and alignment with the pattern printed on the other surface is easy. Therefore, it is possible to manufacture a decorative sheet having a large size and flexibility, and having a pattern, a color change or a three-dimensional effect. Further, since the printing process and the uneven layer forming process are performed continuously, the decorative sheet can be completed in one path from drawing out of the sheet to winding.

In the embodiment described above, the paste resin 2
The case where the monochromatic uneven layer 2a is formed by using either colorless transparent or blue transparent is described as an example.
It is also possible to form a in a plurality of colors. FIG. 6 is a side view showing the configuration of the concavo-convex forming portion 20 when forming the concavo-convex layer 2a of a plurality of colors. As shown in FIG.
And the grooved fixed roll 3a are opposed to each other, and the transparent sheet 1a is passed between them. A partition plate 6 is arranged at a predetermined position in the width direction of the transparent sheet 1a between the transparent sheet 1a and the fixed roll 3a with a groove on the rear side of the traveling of the transparent sheet 1a. The partition plate 6 has an outer peripheral surface shaped along the peripheral surfaces of the reversing roll 5b and the grooved fixed roll 3a, and a colorless and transparent paste resin is disposed on one side in the width direction of the transparent sheet 1a with the partition plate 6 as a boundary. 2 and a blue transparent paste resin 2 on the other side. In FIG. 6, the paste supply pump 4 and the drive roll 16 are not shown.

As described above, the two paste resins are not mixed by the partition plate 6, and the uneven layer 2a can be formed in two colors. Also, by disposing a plurality of partition plates, the uneven layer 2a having a desired number of colors is not limited to two colors.
Can be formed. In the conventional method of pressing the transparent base material to form the uneven layer, it is difficult to form the uneven layer of a plurality of colors as described above. Although an advanced technique is required for positioning, in the present embodiment, the uneven layer 2a having a desired number of colors can be easily formed at a desired position.

In the above-described embodiment, the case where the shape of the groove of the grooved roll 3a has an arcuate concave shape in a sectional view is described, but the present invention is not limited to this. For example, as shown in the cross-sectional view of FIG. 7, the grooves 32, 32,...

Further, in the above-described embodiment, the case where the grooves are formed at the same pitch over the entire region in the roll axis direction has been described. However, the present invention is not limited to this.
As shown in the sectional view of FIG.
, 33,... May be formed at predetermined intervals. Of course, the shape of the groove may be any of the shapes shown in FIG. 4 or FIG.

Further, the shape of the groove of the grooved fixed roll is as follows:
As shown in FIG. 9, one groove may be spirally formed on the peripheral surface of the roll. The formation of such a groove can be realized by adjusting the position of laser beam irradiation and the setting of the rotation speed of the roll when manufacturing the grooved roll.

Second Embodiment The first embodiment described above describes a case where a decorative sheet is produced in which a printed layer 1c and a concavo-convex layer 2a are respectively formed on both surfaces of one transparent sheet 1a. However, a decorative sheet can be manufactured by stacking a plurality of transparent sheets. FIG.
Is a schematic diagram showing a configuration of a manufacturing apparatus according to the second embodiment, and shows only a concavo-convex layer forming portion. In addition, the paper feeding unit and the printing unit of the first transparent sheet 1a on which the print layer 1c is formed are the same as those in the first embodiment shown in FIG.
It is abbreviated.

As shown in FIG. 10, the uneven layer forming section includes a reversing roll 5a for reversing the processing surface of the first transparent sheet 1a introduced from a printing section (not shown), and a transparent sheet 1
a driving roll 16 for running the a, a grooved fixed roll 3a opposed to the upper side, and a paste which is disposed on the rotation rear side of the grooved fixed roll 3a and applies the paste resin 2 to the second transparent sheet 1b. The supply device 41 and the heating roll 17 disposed on the rotation front side of the grooved fixed roll 3a
And a cooling roll 18 opposed thereto, the first and second
And a plurality of guide rolls 13 for guiding each of the transparent sheets 1a and 1b between these rolls. Further, a winding section is provided for winding the manufactured decorative sheet around the winding shaft 19.

FIG. 11 shows the driving roll 16 shown in FIG.
It is a perspective view which shows the positional relationship of the fixed roll 3a with a groove, and the paste supply apparatus 41. As shown in FIGS. 10 and 11, after the first transparent sheet 1a has a printing layer 1c formed on one surface, the printing layer 1c is applied to the driving roll 16 between the driving roll 16 and the grooved fixed roll 3a. It is transported in the abutting direction. On the other hand, the second transparent sheet 1b wound in a roll shape is pulled out and passes below the paste supply device 41. The transparent sheet 1b is formed of a synthetic resin having flexibility and optical transparency. The paste supply device 41 includes:
The second transparent sheet 1b has a discharge port having substantially the same size as the width of the transparent sheet 1b, and the paste resin 2 is applied over the entire length of the transparent sheet 1b in the width direction. As the paste resin 2, a resin having the composition shown in Table 2 of the first embodiment is used. The transparent sheet 1b is transported in such a direction that the surface of the applied paste resin 2 is brought into contact with the grooved fixed roll 3a.

Similar to the first embodiment, the grooved fixed roll 3a has a roll shape obtained by applying copper plating to a hollow cylindrical aluminum, and has circumferential grooves 31, 31 are formed in parallel at an equal pitch. The groove 31 has a semi-cylindrical concave surface having an arc-shaped cross section, as in FIG.

The gap between the grooved fixed roll 3a and the driving roll 16 is provided between the first and second transparent sheets 1a, 1a.
b passes in an overlapping state. At this time, the grooved fixing roll 3a makes the grooves 31, 31... Contact the surface of the paste resin 2 applied to the second transparent sheet 1b, and the paste resin 2 is brought into contact with the grooves 31, 31 of the grooved fixing roll 3a. … And shaped into a lens having a semicircular arcuate cross section. The second transparent sheet 1b on which the concavo-convex layer 2a is formed and the first transparent sheet 1b on which the print layer 1c is formed are bonded to each other, passed through the heating roll 17, gelled, and cooled. And is cooled and solidified. Then, it is introduced into a winding section by a guide roll 13 and wound around a winding shaft 19.

As described above, in the apparatus according to the second embodiment, the transparent sheet 1b running is coated with the paste resin 2 and formed into an uneven shape while the transparent sheet having the printed layer 1c is simultaneously bonded. Even if the transparent sheet 1a is large and flexible, it can be easily aligned with the pattern printed on the other side. Therefore, it is large and flexible, and
A decorative sheet having a pattern, a change in color, or a three-dimensional effect can be manufactured. In addition, since two transparent sheets are used, it is possible to print a pattern on both sides of the first transparent sheet or on one side of the second transparent sheet, and there is a more complicated pattern, color change or depth. It is possible to manufacture a decorative sheet having a three-dimensional effect. Further, since the printing process and the uneven layer forming process are performed in the same manufacturing process, the decorative sheet can be completed from the transparent sheet in one path from drawing out and winding up the sheet.

Third Embodiment In the first and second embodiments described above, the case where the uneven layer 2a is formed by directly scraping the surface of the applied resin paste 2 with a grooved roll will be described. However, the surface of the applied resin paste 2 is covered with a second transparent sheet, and heated from the surface of the second transparent sheet with a grooved roll.
The configuration may be such that the uneven layer 2a is formed by pressing. FIG. 12 is a schematic diagram illustrating a configuration of a manufacturing apparatus according to the third embodiment, and illustrates only a concavo-convex layer forming portion. Note that the paper feeding unit and the printing unit of the first transparent sheet 1a are the same as those in the first embodiment shown in FIG.

As shown in FIG. 12, the concavo-convex layer forming section guides the transparent sheet 1a introduced from a printing section (not shown), and turns over the reversing roll 5a for reversing the processing surface and the driving roll 16 for running the transparent sheet 1a. And drive roll 1
6, a heating roll 3b provided with grooves, a resin paste application unit disposed on the rotation rear side of the heating rolls 3b, and a heating roll disposed on the rotation front side of the heating rolls 3b. 17 and a cooling roll 18 opposed thereto. The resin paste unit includes a tank 24 into which the resin paste 2 is loaded, a rubber coating roll 21 disposed above the tank 24, and a rubber receiving roll 22 opposed to the coating roll 21. In addition, on the rotation front side of the cooling roll 18, there is provided a winding section where the manufactured decorative sheet is wound around a winding shaft 19.

The grooved heating roll 3b has a roll shape obtained by applying copper plating to aluminum having a hollow cylindrical shape, and a plurality of circumferential grooves 31, 31,... Have been. Like the groove 31 of the grooved fixed roll 3 a shown in FIG. 4, the groove 31 has a semi-cylindrical concave surface having an arc-shaped cross section. Grooved heating roll 3b
Are configured to inject steam into the hollow interior, and are further configured to press against the opposing drive roll 16.

In the concavo-convex layer forming portion having the above configuration, the first
After the printed layer 1c is formed on one side of the transparent sheet 1a,
It is transported between the driving roll 16 and the grooved heating roll 3b. On the other hand, the second transparent sheet 1b wound in a roll shape
Is drawn out and passes between the application roll 21 and the receiving roll 22. The tank 24 is filled with the paste resin 2, and the paste resin 2
Is applied over the entire length of the lower surface of the second transparent sheet 1b in the width direction. The second transparent sheet 1b is transferred between the drive roll 16 and the grooved heating roll 3b while the surface of the applied paste resin 2 is overlapped so as to contact the first transparent sheet 1a. Thus, the first transparent sheet 1a
Contacts the driving roll 16, the second transparent sheet 1b contacts the grooved heating roll 3b, and the paste resin 2 is sandwiched between the first transparent sheet 1a and the second transparent sheet 1b. It passes between the driving roll 16 and the grooved heating roll 3b.

At this time, the grooved heating roll 3b brings the grooves 31, 31... Into contact with the surface of the second transparent sheet 1b,
For example, while being heated to approximately 170 ° C., the pressure is applied to the opposing drive roll 16 at approximately 2.5 kg / cm ² . Second by pressing
Is formed into a shape corresponding to the groove 31,
The resin paste 2 is gelled by heating. As a result, the paste resin 2 is formed into a semi-cylindrical lens shape having an arc-shaped cross section together with the second transparent sheet 1b.
The uneven layer 2a is formed on the transparent sheet 1a. At the same time, the first and second transparent sheets 1a and 1b are heated and pressed to be bonded.

The decorative sheet 1 to which the two transparent sheets 1a and 1b are adhered passes through a heating roll 17 whose peripheral surface is heated by steam injection, and is further heated (170 ° C.).
It is gelled and cooled by passing through a cooling roll 18 whose peripheral surface has been cooled by injection of a cooling medium. Then, it is introduced into a winding section by a guide roll 13 and wound around a winding shaft 19.

[0068] Paste resin 2 used in the present embodiment
Has a fluid viscosity mainly containing polyvinyl chloride, for example, 2000 cps (manufactured by Tokyo Keiki Co., Ltd., BH type viscometer), and the composition is as shown in Table 3. The paste resin shown in Table 3 has an appropriate viscosity and adhesiveness, and due to such physical properties, the lens-shaped uneven layer 2a is formed on the first transparent sheet 1a by heating and pressing the grooved heating roll 3b.
Can be formed. Note that the paste resin may be colorless and transparent, or may be colored with a transparent color.

[0069]

[Table 3]

As described above, in the apparatus according to the third embodiment, the paste resin 2 is applied to the running second transparent sheet 1b, and the second transparent sheet 1b is heated and pressed from the transparent sheet 1b side to be formed into an uneven shape. Therefore, even if the transparent sheet is large and flexible, it is easy to align the pattern printed on the other side with the uneven layer. Therefore, it is possible to manufacture a decorative sheet having a large size and flexibility, and having a pattern, a color change or a three-dimensional effect. In addition, since heating and pressing are performed from the surface of the second transparent sheet 1b, there is no need to precisely adjust physical properties such as viscosity and adhesiveness of the paste resin 2. Further, since two transparent sheets are used, it is possible to print a pattern on both sides of the first transparent sheet, and it is possible to produce a decorative sheet having a complicated pattern, a change in color or a three-dimensional effect having a depth. It becomes possible. Furthermore, since the printing process and the uneven layer forming process are performed in the same manufacturing process,
The decorative sheet can be completed within one path from the sheet drawing to winding.

In the above-described embodiment, the case where the pattern is gravure-printed on one side is described. However, the present invention is not limited to this, and it may be configured to perform flexographic printing or silk-screen printing. .

[0072]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A decorative sheet manufactured using the apparatus of the above embodiment will be described below. Embodiment 1 FIG. The manufacturing apparatus according to the first embodiment shown in FIG. 1 is used. First, opaque blue ink is applied to tanks 14, 14,.
A transparent sheet 1a filled with an opaque green ink and a silver ink and having a thickness of 0.3 mm is mounted on a paper feeding unit. In the printing unit 10, opaque blue ink and opaque green ink were printed on the surface of the transparent sheet 1a to form a pattern 101 as shown in FIG. FIG. 13 is a plan view showing the pattern 101. As shown in the figure, this pattern has a stripe portion in which a blue line, a green line, and a transparent line (no printing) having a line width of 0.2 mm are alternately repeated at a 0.6 mm pitch, and a transparent portion having a width of 102 mm (no printing). And have a shape combining a lattice and a circle. Subsequently, 102 silver ink was printed on the entire surface of the stripe portion.

Next, the transparent sheet 1 a
A resin paste 2 (formulation A-1) is applied to the back surface of the substrate, and the concave-convex layer 2a of a kamaboko type is 0.6 m thick by a fixed roller 3a having a groove.
It was formed at an m pitch. Here, the grooved fixed roller 3a has a shape shown in FIG. 4 and has a diameter of 50 mm, a pitch of 0.6 mm, and a depth of 300 μm.
Are formed. The uneven layer 2 a was gelled by the heating roller 17, cooled by the cooling roller 18, and the decorative sheet 1 was wound by the winding shaft 19.

FIG. 14 shows the first embodiment thus manufactured.
It is sectional drawing which shows the structure of the decorative sheet. Transparent sheet 1
A printed layer 1c is formed on the front surface of a, and a lens-shaped uneven layer 2a is formed on the back surface. Such decorative sheet 1
According to the lens effect of the uneven layer 2a, the color of the printed layer 1c was changed to blue or green depending on the viewing angle, and the stripe portions appeared to be shining in a metallic tone.

Embodiment 2 FIG. The manufacturing apparatus according to the first embodiment shown in FIG. 1 is used. First, the tanks 14, 14 are filled with opaque ink. In the printing unit 10, a stripe pattern shown in FIG. 15 was printed on the surface of the transparent sheet 1a having a thickness of 0.3 mm to form a printing layer 1c. FIG. 15 shows the printing layer 1
It is a top view showing the pattern of c. This stripe pattern is a pattern in which stripe lines having a pitch of 0.4 mm and a line width of 0.2 mm formed in a 5 cm grid are intersected at 3 ° to each grid. The ink uses a desired color.

Next, the transparent sheet 1 is
a, a resin paste 2 (formulation A-2) is applied to the back surface and a grooved fixed roller 3a is used to apply 150 μm at a pitch of 0.4 mm.
A transparent blue kamaboko-shaped uneven layer 2a having a height of m was formed. The grooved fixed roller 3a has a shape shown in FIG. 4 and has a diameter of 50 mm.
Are formed at a pitch of 0.4 mm and a depth of 300 μm. The uneven layer 2 a was gelled by the heating roller 17, cooled by the cooling roller 18, and the decorative sheet 1 was wound by the winding shaft 19.

FIG. 16 shows the second embodiment thus manufactured.
It is a top view of the decorative sheet of FIG. The decorative sheet 1 looks like a moire pattern formed by the stripe pattern of the printing layer 1c and the stripe lines of the uneven layer 2a, and furthermore, the moire pattern looks like a deep three-dimensional pattern due to the lens effect of the uneven layer 2a.
The sheet became extremely highly decorative.

Embodiment 3 FIG. The manufacturing apparatus according to the first embodiment shown in FIG. 1 is used. First, the tanks 14 are filled with milky white ink. In the printing unit 10, moire stripes were printed on the surface of the transparent sheet 1a having a thickness of 0.3 mm to form a printing layer 1c. This moiré fringe has a pitch of 0.4
mm and a line width of 0.2 mm are crossed at 15 °. Next, a resin paste 2 (formulation A-1) is applied to the back surface of the transparent sheet 1a in the uneven layer forming section 20, and the grooved fixed roller 3a has a pitch of 0.4 mm and a height of 300 μm having a height of 300 μm. The layer 2a was formed. The grooved fixed roller 3a has a shape shown in FIG. 4 and has a diameter of 50 mm, and the grooves 32 are formed at a pitch of 0.4 mm and a depth of 300 μm. The moire fringes of the print layer 1c have a size reduced to 98% of the pitch of the grooves 32, that is, the pitch of the uneven layer 2a. Heating roller 1
7, the uneven layer 2a was gelled, cooled by the cooling roller 18 and the decorative sheet 1c was taken up around the shaft 19.

FIG. 17 shows the third embodiment manufactured as described above.
It is a top view which shows the pattern of the decorative sheet. Decorative sheet 1
Is a highly decorative sheet in which a rhombic pattern can be seen by the moiré pattern of the printing layer 1c and the stripe lines of the uneven layer 2a, and the rhombic pattern can be seen as a deep three-dimensional pattern due to the lens effect of the uneven layer 2a. became.

Embodiment 4 FIG. The manufacturing apparatus according to the first embodiment shown in FIG. 1 is used. FIG. 18 is a cross-sectional view illustrating the structure of the decorative sheet 1 according to the fourth embodiment. First, tanks 14, 14 ...
Are filled with white, opaque red, opaque yellow and opaque green inks. In the printing unit 10, the entire surface was printed with white ink 103 on one surface of the transparent sheet 1a having a thickness of 0.3 mm, and a plurality of cosmos floral patterns 104 were printed in red and yellow on the surface. In addition, green moire stripes 105 on the surface
Was printed. This moiré fringe is a pattern in which lines having a pitch of 0.4 mm and a line width of 0.2 mm intersect at 15 °.
Further, the entire surface was printed with white ink 106.

Next, the transparent sheet 1 is
a, a resin paste 2 (formulation A-1) is applied to the other surface,
300μm at 0.4mm pitch with grooved fixed roller 3a
Is formed.
Here, the grooved fixed roller 3a has a shape shown in FIG. 4 and has a diameter of 50 mm.
It is formed to a depth of 300 μm at a pitch of mm. The moire fringes have a size reduced to 98% with respect to the pitch of the uneven layer 2a. The uneven layer 2a is gelled by the heating roller 17,
The decorative sheet 1 is cooled by the cooling roller 18 and the winding shaft 19 is wound.
Wound up.

In the decorative sheet 1 of Example 4 manufactured in this manner, the moire stripes 105 of the print layer 1c and the stripe lines of the uneven layer 2a make the rhombus look like a deep three-dimensional pattern, and the cosmos flower pattern 102 Since it looks fixed, a highly decorative sheet having a larger three-dimensional effect is obtained.

The decorative sheets 1 of Examples 3 and 4 can obtain a three-dimensional effect even when the grooved fixed roll 3a having the grooves 32 having the shape shown in FIG. 7 is used.

Embodiment 5 FIG. The manufacturing apparatus according to the third embodiment shown in FIG. 12 is used. FIG. 19 is a cross-sectional view illustrating the structure of the decorative sheet 1 according to the fifth embodiment. First, the tanks 14, 14,... Of the printing unit 10 are filled with opaque green ink, and the tank 24 of the concavo-convex layer forming unit is filled with the resin paste 2 (formulation A-1). In the printing unit 10, the moire stripes 1 with green ink are applied to one surface of the first transparent sheet 1a having a thickness of 0.1 mm.
07 was printed. The moire stripes 107 have a pitch of 1.
It is a pattern in which lines having a line width of 2 mm and a line width of 0.2 mm intersect at 1 °.

Next, the tank 24 is filled with the resin paste 2 (formulation B). The resin paste 2 is applied to the surface of the second transparent sheet 1b having a thickness of 0.2 mm in the uneven layer forming section 20, and the first and second transparent sheets 1a and 1b are overlapped with the resin paste 2 interposed therebetween. Can be By heating to 170 ° C. from the second transparent sheet 1b side with the grooved heating roller 3b and pressing at 2.5 kg / cm ² , the resin paste 2 and the second transparent sheet 2 form a 0.4 mm pitch. -Shaped uneven layer 2 having a height of 250 μm
a is formed. Here, the grooved heating roller 3b has a shape shown in FIG. 4 and its circumferential dimension is 606 mm.
The grooves 31, 31 ... are pitched at 0.4 mm and 250 μm deep
Is formed. The moiré fringes 107 have a size reduced to 99% with respect to the pitch of the uneven layer 2a. The uneven layer 2 a was gelled by the heating roller 17, cooled by the cooling roller 18, and the decorative sheet 1 was wound on a winding shaft 19.

In the decorative sheet 1 of Example 5 thus manufactured, a rhombic pattern is visible due to the moire stripes 107 of the printing layer 1c and the stripe lines of the concave-convex layer 2a, and the rhombic pattern is formed by the lens effect of the concave-convex layer 2a. The sheet looks like a three-dimensional pattern with a deep depth. Further, since the pitch of the moiré pattern 107 of the print layer 1c is larger than that of the fourth embodiment, a rhombic pattern having a larger dimension than that of the fourth embodiment is formed, and the rhombic pattern becomes a three-dimensional pattern having a deeper depth. The sheet became visible and highly decorative.

The decorative sheet 1 of Example 5 can obtain an excellent three-dimensional effect even when the grooved fixed roll 3a having the groove 32 shown in FIG. 7 is used.

[0088]

As described above, in the manufacturing method and the manufacturing apparatus of the present invention, the paste material is applied and formed into an uneven shape while the transparent base material is running, so that even a large and soft base material can be obtained. The present invention provides excellent effects such as easy alignment of the patterns on the front and back surfaces, reduction in the number of processes, and low-cost manufacturing. Further, by printing a pattern on the other surface of the transparent substrate continuously with the process of forming the concavo-convex layer, the present invention has excellent effects such that the concavo-convex layer and the printed layer can be formed in the same traveling path.

Further, in the grooved roller of the present invention,
Using a grooved roller with grooves formed by etching,
Since the surface of the paste material applied to the transparent base material is formed into irregularities, the uneven layer can be formed at an accurate position, and no unnecessary load is applied to the transparent base material, so that the alignment with the print layer can be easily performed. And so on.

Further, in the decorative sheet of the present invention,
Since it has the concavo-convex layer formed through such a manufacturing process, it has excellent effects such as accurate positioning of the patterns on both sides and excellent decorativeness.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a decorative sheet manufacturing apparatus according to a first embodiment.

FIG. 2 is a perspective view showing a positional relationship among a reversing roll, a paste supply pump, and a grooved fixed roll shown in FIG.

FIG. 3 is a perspective view illustrating a structure of a grooved fixed roll according to the first embodiment.

FIG. 4 is a cross-sectional view of a grooved fixed roll according to the first embodiment, taken along a plane including an axis.

FIG. 5 is a flowchart showing a manufacturing procedure of the grooved fixed roll according to the present invention.

FIG. 6 is a side view showing a configuration of a concavo-convex forming portion when forming a concavo-convex layer of a plurality of colors in the first embodiment.

FIG. 7 is a cross-sectional view showing the shape of another grooved fixed roller according to the present invention.

FIG. 8 is a sectional view showing the shape of still another grooved fixed roller according to the present invention.

FIG. 9 is a cross-sectional view showing the shape of still another grooved fixed roller according to the present invention.

FIG. 10 is a schematic diagram illustrating a configuration of a manufacturing apparatus according to a second embodiment.

11 is a perspective view showing a positional relationship among a driving roll, a grooved heating roll, and a paste supply device shown in FIG.

FIG. 12 is a schematic diagram illustrating a configuration of a manufacturing apparatus according to a third embodiment.

FIG. 13 is a plan view showing a pattern of a print layer according to the first embodiment.

FIG. 14 is a cross-sectional view illustrating the structure of the decorative sheet of Example 1.

FIG. 15 is a plan view showing a pattern of a printed layer in Example 2.

FIG. 16 is a plan view of a decorative sheet according to a second embodiment.

FIG. 17 is a plan view showing a pattern of a decorative sheet of Example 3.

FIG. 18 is a cross-sectional view illustrating a structure of a decorative sheet according to a fourth embodiment.

FIG. 19 is a cross-sectional view illustrating a structure of a decorative sheet according to a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative sheet 1a 1st transparent sheet 1b 2nd transparent sheet 1c Printing layer 2 Resin paste 2a Concavo-convex layer 3a Fixed roll with a groove 3b Heated roll with a groove 4,41 Paste supply pump 5a First reversing roll 5b Second Reversing roll 6 Partition plate 10 Printing unit 16 Drive roll 17 Heating roll 18 Cooling roll 31, 32, 33 Groove

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[Procedure amendment]

[Submission date] January 11, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: Method and apparatus for manufacturing decorative sheet utilizing light refraction effect and grooved roller provided therein

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

TECHNICAL FIELD The present invention relates to a table cover,
Shower curtains, a method of manufacturing a decorative sheet for use in the window decoration sheet, material, etc. for bags, relates to an apparatus and grooved low la used in its implementation.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Deleted

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Deleted

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Deleted

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0090

[Correction method] Change

[Correction contents]

Further, the production by these methods and devices is
Since the formed decorative sheet has the concavo-convex layer formed through the above-described manufacturing process, it has excellent effects such as accurate positioning of the patterns on both sides and excellent decorativeness.

Claims (11)

[Claims] 1. A method for producing a decorative sheet having a concave-convex layer on one surface of a transparent substrate and having decorative properties by a light refraction effect, wherein the step of causing the transparent substrate to travel and the step of causing the transparent substrate to travel Forming the concavo-convex layer, the step of forming the concavo-convex layer includes a coating step of applying a paste material on one surface of the transparent substrate, and a forming step of forming the paste material in a concavo-convex shape. And a solidifying step of solidifying the formed paste material. 2. The method for manufacturing a decorative sheet according to claim 1, wherein the forming step includes a step of scraping a surface of the paste material by a grooved roller fixed to one surface of the running transparent base material. . 3. The forming step includes a step of heating the paste material and a step of pressing the paste material by a grooved roller rotatably arranged opposite one surface of the running transparent base material. Method of manufacturing decorative sheet. 4. The uneven layer according to claim 1, further comprising a second transparent substrate between the transparent substrate and the paste material or on a side of the paste material far from the transparent substrate. 3. The method for producing a decorative sheet according to item 1. 5. A step of forming a printing layer on which a predetermined pattern is printed on a surface of the transparent substrate opposite to the surface of the concave-convex layer, while the transparent substrate is running, following the step of forming the concave-convex layer. The method for producing a decorative sheet according to any one of claims 1 to 4, comprising: 6. The method for manufacturing a decorative sheet according to claim 1, wherein the paste material contains a thickening substance. 7. An apparatus for producing a decorative sheet having an uneven layer on one surface of a transparent base material and having decorative properties by a light refraction effect, wherein: a running means for running the transparent base material; Coating means for applying a paste material, a grooved roller having a circumferential groove on a peripheral surface thereof and forming the paste material in an uneven shape, and solidifying the formed paste material to form the uneven layer Means for producing a decorative sheet. 8. The decorative sheet manufacturing apparatus according to claim 7, further comprising a partition plate provided between the coating means and the grooved roller in a direction of an axis of the grooved roller. 9. The decorative sheet according to claim 7, further comprising a printing unit that prints a predetermined pattern on a surface of the transparent substrate opposite to the uneven layer, on an upstream side or a downstream side of the transparent substrate. Manufacturing equipment. 10. A grooved roller for use in performing the forming step of the manufacturing method according to claim 1, wherein a circumferential groove is formed on a peripheral surface of the roller by etching. A grooved roller, characterized in that: 11. A decorative sheet, wherein the uneven layer is formed by implementing the manufacturing method according to claim 1.