JP2017159589A - Method for producing decorative body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative body in which it is possible to print a transparent varnish having a large thickness in order to obtain a microlens including a lens body having a high height, and a visual expression pattern which becomes an enlarged pattern is favorably presented.SOLUTION: When a decorative body 1 is produced, a reflective layer 3 is disposed on a substrate 2, a visual expression pattern 6 made into a dot pattern form at a pitch A is printed on the reflective layer 3 by gravure printing to form a pattern surface 4, a transparent varnish having a large thickness made into a dot pattern form at a pitch different from the pitch is printed on the pattern surface 4 by gravure printing, and a lens surface 5 is formed in which microlenses 7 including the transparent varnish having a large thickness are aligned at a pitch on which the transparent varnish having a large thickness is printed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for manufacturing a decorative body having a special visual effect using a microlens.

  Conventionally, as shown in Patent Document 1, the applicant of the present application has previously proposed a decorative body having a visual effect using the microlens. In this decorative body, a character drawn with a pitch B using a visual expression pattern provided in a todd pattern with a pitch A on a base material and a varnish having liquid repellency on the pattern surface of the visual expression pattern. A liquid repellent pattern provided in a shape, and a microlens formed by applying a transparent varnish on a layer made of the liquid repellent pattern and forming a portion of a letter.

  Further, a decorative body is proposed in which the pitch A and the pitch B have different pitch dimensions, and a pattern in which the dot pattern of the visual expression pattern is enlarged appears at an equal pitch so as to be viewed stereoscopically.

  Further, in the proposal in Patent Document 1, a reflective layer is provided between the base material and the visual expression pattern, and the presence of the reflective layer allows external light incident on the microlens to be reflected by the reflective layer and emitted. Therefore, a decorative body in which an enlarged pattern appears strongly by increasing the amount of reflected light can be obtained.

JP 2011-005685 A

  In the manufacture of the decorative body described above, a letter-like liquid repellent pattern is printed and formed on the pattern surface of the visual expression pattern by offset printing using a liquid-repellent varnish, and then transparent on the liquid repellent pattern. Varnish is applied so that the transparent varnish is repelled along the liquid repellent pattern.

  When the transparent varnish is repelled, the liquid repellent pattern is gathered at each of the extracted character portions (holes) and rises from the surface height of the liquid repellent pattern, and the transparent varnish dries and cures at that portion to become a microlens, A lens surface on which this is arranged is formed.

  However, this manufacturing method of the decorative body has the following problems. First, it is difficult to increase the height of the microlens.

  In other words, the transparent varnish is repelled with a liquid repellent pattern so that the transparent varnish is formed at the extracted character portion, and if the transparent varnish is to be thickened at the extracted character portion, it is necessary to increase the coating amount of the transparent varnish. . However, when the coating amount is increased, the transparent varnish oozes out from the punched character part and does not become thick, and the microlens with a shape raised above the surface height position of the liquid-repellent pattern is removed. I can't make it.

  Next, there is a problem that fine reproducibility is poor in forming a microlens. This is also due to the above-mentioned point. In the first place, the transparent varnish is repelled with a liquid-repellent pattern so that the transparent varnish gathers toward the extracted character portion, so the outer edge shape of the transparent varnish collected at the extracted character portion is stable. It is because it does not.

  Another problem is that it is difficult to print a high-brightness printed pattern by offset printing. Ink for offset printing needs to be well-kneaded due to the printing characteristics, but high-brightness ink contains metal powder pigments, etc. It is difficult to print a picture.

  Therefore, in the manufacture of the decorative body, the reflective layer is formed by printing by gravure printing. After that, printing of a visual expression pattern and printing of a liquid repellent pattern are performed by offset printing, and a transparent varnish is further applied to form the microlens. In this way, the production line must include a process in which the printing format changes at least until the printing of the liquid-repellent pattern, and the printed product in the middle of production is offset from the production line until the reflective layer is printed. It will be necessary to transfer to.

  In view of the above circumstances, an object of the present invention is to make it possible to print a transparent varnish with a large thickness in order to obtain a microlens having a high lens body height. The object is to produce a decorative body.

(Invention of Claim 1)
The present invention has been made in consideration of the above problems, and a step of providing a reflective layer on a substrate;
On the reflective layer, printing a visual expression pattern in the form of a dot pattern at a pitch A by gravure printing to form a pattern surface;
On the pattern surface, a transparent varnish printed in a dot pattern with a pitch B different from the pitch A by gravure printing is printed in a thick pattern, and microlenses made of the thick transparent varnish are arranged at the pitch B. And a step of forming a lens surface, and a method for manufacturing a decorative body characterized in that the above-described problems are solved.

(Invention of Claim 2)
In the present invention, the reflective layer is preferably provided by printing high-brightness ink on the base material by gravure printing.

(Effect of the invention of claim 1)
According to the first aspect of the present invention, the height of the transparent varnish can be adjusted by the plate depth of the gravure printing plate, and the lens height is increased from the thick transparent varnish by increasing the plate depth of the gravure printing plate. A lens can be easily formed. In addition, the transparent varnish is printed directly with the dot pattern from the gravure printing plate instead of removing the transparent varnish with the liquid repellent pattern, so that the outer edge shape of the transparent varnish is stable and the microlens as designed is used. Can be obtained.

  Further, by reducing the plate diameter of the gravure printing plate, a minute microlens can be obtained, and a decorative body with a clearer enlarged pattern can be manufactured.

(Effect of the invention of claim 2)
According to invention of Claim 2, formation of a printing layer, formation of the image surface by a visual expression pattern, and formation of the lens surface by a microlens are the gravure printing machines which arrange the gravure printing plate according to each step | line in a series. It can be carried out and the decorative body can be manufactured at low cost.

It is explanatory drawing which shows the decoration body by an example of the manufacturing method of the decoration body which concerns on this invention in a cross section. It is explanatory drawing which shows an example of a gravure printing machine. It is explanatory drawing which shows roughly the arrangement | positioning of the visual expression pattern of a decoration body and a micro lens in a decoration body.

  Next, the present invention will be described in detail based on the illustrated embodiment. In the figure, reference numeral 1 denotes a decorative body manufactured according to the present invention. As shown in the cross section of FIG. 1, the decorative body 1 includes a base material 2 and a reflective layer 3 formed on one side of the base material 2. The pattern surface 4 formed on the reflective layer 3 and the lens surface 5 formed on the pattern surface 4 are provided.

  The pattern surface 4 of the decorative body 1 is formed by printing a visual expression pattern 6 having a dot pattern with a pitch A on the reflective layer 3. The lens surface 5 is printed on the pattern surface 4 with a transparent varnish formed in a dot pattern at a pitch B different from the pitch A, and microlenses 7 made of the transparent varnish are arranged at the pitch B. Is formed.

(Base material)
As the substrate 2, a substrate of any material such as paper, a synthetic resin film, a synthetic resin plate can be used. However, even if the substrate is a large area, a fine microlens can be accurately formed, Paper or synthetic resin film that can be set in a printing press is desirable.

(Reflective layer)
As the reflective layer 3, a metal foil, a metal vapor-deposited layer, an ink layer containing a bright pigment such as a metal powder pigment or a pearl pigment, or the like is used. You may use the vapor deposition paper and vapor deposition film which vapor-deposited aluminum on paper and a film as a base material with a reflecting layer. In the present embodiment, the reflective layer 3 is provided by printing high-brightness ink on the substrate 2 by gravure printing. When this reflective layer 3 is provided, an anchor layer is applied to the paper as a base material to smooth the paper surface, and then a high-brightness ink containing a metal powder pigment is applied by gravure printing. preferable.

  In the decorative body 1, since the reflective layer 3 exists, the incident external light is reflected and emitted by the reflective layer 3, and the amount of reflected light increases, so that an enlarged pattern described later appears strongly. .

(Pattern surface)
The pattern surface 4 is formed by printing the visual expression pattern 6 as described above, and is formed by printing on the reflection layer 3 by gravure printing using a commonly used transparent coloring ink or opaque coloring ink. Is. The visual expression pattern 6 can be used by miniaturizing an arbitrary figure such as a circle, a rectangle, a triangle, a heart shape, or a character.

(Lens surface)
The lens surface 5 is formed by arranging the microlenses 7 at a pitch B different from the pitch A of the visual expression pattern 6 as described above, and dots are formed at the pitch B by gravure printing on the pattern surface 4. Patterned transparent varnish is printed thickly. The thick transparent varnish is dried and cured at an early stage on the decorative body production line to form the microlens 7, and the lens surface 5 is obtained by a large number of microlenses 7 arranged at the pitch B.

In manufacturing the decorative body 1 including the pattern surface 4 including the visual expression pattern 6 with the pitch A and the lens surface 5 including the microlens 7 with the pitch B on the reflective layer 3,
(A) A process of forming a reflective layer 3 by printing high-brightness ink on the base material 2 by gravure printing, and (b) printing a visual expression pattern 6 by gravure printing on the reflective layer 3. (C) A step of forming a lens surface 5 in which a transparent varnish is printed on the pattern surface 4 by gravure printing and a microlens 7 made of the transparent varnish is arranged on the pattern surface 4. A gravure printing machine 9 in which printing units 8a to 8c each having a gravure printing plate corresponding to each process are connected in series as shown in FIG. 2 may be used. The manufacturing cost can be reduced.

  FIG. 2 schematically shows the structure of the gravure printing machine 9, and when the decorative body is produced by the gravure printing machine 9, the base material 2 in the form of the original fabric is drawn out from the winding portion and printed. The unit 8 performs base printing on one side. Then, the reflective layer 3 is formed in the step (a) in the printing unit 8a, and the pattern surface 4 is formed in the step (b) in the next printing unit 8b. Furthermore, the decorative body 1 can be obtained in a continuous form by forming the lens surface 5 in the step (c) in the next printing unit 8c.

  The appearance of the enlarged pattern on the decorative body 1 manufactured by the gravure printing machine 9 will be described as follows.

  As shown in FIG. 3, when the visual expression pattern pitch 10 as the pitch A and the microlens pitch 11 as the pitch B are set to different values, the positions of the dots of the visual expression pattern 6 and the microlens 7 gradually shift. Attempts to match again at a position shifted by one pitch. In the part where both coincide, the central part of the visual expression pattern 6 is enlarged by the micro lens 7, and in the part where both do not coincide, the intermediate part of the adjacent visual expression pattern 6 is enlarged by the micro lens 7.

  In FIG. 3, the enlarged region 12 recognized in a state where the central portion of the visual expression pattern 6 is enlarged is shown by a circle, and the enlargement recognized in the state where the intermediate portion of the adjacent visual expression pattern 6 is enlarged. Region 13 is also shown circled.

  In this way, the portion of the visual expression pattern to be enlarged gradually shifts and moves back to the original position at a position shifted by one pitch. As a result of repeated coincidence and inconsistency of the pitch, when viewed with the naked eye, it is recognized as if the visual expression pattern has been enlarged, and the appearance of the enlarged pattern is recognized with the naked eye. To play. In addition, if a good example is given as a value of the visual expression pattern pitch 10 and the microlens pitch 11, about 0.05 mm to 1.0 mm is preferable.

DESCRIPTION OF SYMBOLS 1 ... Decorative body 2 ... Base material 3 ... Reflective layer 4 ... Pattern surface 5 ... Lens surface 6 ... Visual expression pattern 7 ... Micro lens 8, 8a, 8b, 8c ... Printing unit 9 ... Gravure printing machine 10 ... Visual expression pattern pitch 11 ... Microlens pitch 12 ... Enlarged area 13 ... Enlarged area

Claims (2)

Providing a reflective layer on the substrate;
On the reflective layer, printing a visual expression pattern in the form of a dot pattern at a pitch A by gravure printing to form a pattern surface;
On the pattern surface, a transparent varnish printed in a dot pattern with a pitch B different from the pitch A by gravure printing is printed in a thick pattern, and microlenses made of the thick transparent varnish are arranged at the pitch B. And a step of forming the lens surface.   The said reflection layer is a manufacturing method of the decorative body of Claim 1 provided by printing the high brightness ink by the gravure printing on the said base material.

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