JP3137585U - Embossed cardboard - Google Patents

Abstract

【Task】
An object of the present invention is to improve anti-counterfeiting by enhancing the design as a cosmetic cardboard and having a unique visibility.
[Solution]
In a corrugated cardboard using a preprint liner provided with a print layer and further an overprint varnish layer, the preprint liner is embossed in a line shape. This line-shaped embossing consists of horizontal lines and vertical lines, and by arranging them alternately in a checkered pattern, the difference in glossiness between the solid print part and the overprint varnish part in the pattern print part of characters etc. Gives a unique visual effect. In addition, the line-like irregularities also led to improvements in the ease of handling the cardboard box.
[Selection] Figure 1

Description

The present invention relates to a corrugated cardboard using a preprint liner in which a design print layer is provided on a liner base material and an overprint varnish layer is further provided. More specifically, the present invention relates to a corrugated cardboard that is embossed on a preprint liner to enhance the design of the corrugated cardboard, prevent counterfeiting, and enhance the functionality of handling the cardboard.

Conventionally, corrugated cardboard using a preprint liner with a printed layer on a liner base material and an overprint varnish layer can express a high-class image. It is expanding as product cardboard packaging.

This preprint printing method is widely used for flexographic printing of wrap-around cases used for packaging beer cans, and has become an appealing means for its own products. However, there is a need for further improvements in store display effects and ease of handling. For this reason, a lot of anti-slip varnish may be applied to the printing surface, but there is a problem that complicated warping occurs (for example, see Patent Document 1).

Also, for example, as a paper box for high-quality sake, whiskey, confectionery, etc., embossed decorative paper is known, which has fine pattern irregularities by embossing on the side wall surface to increase the commercial value of the paper box. In order to beautify, the surface of the paper material is given a metallic luster with aluminum foil, etc., and there is a pattern with fine irregularities patterned by printing and embossing (for example, patent document) 2).

JP 2002-292664 A JP-A-6-344649

Conventionally, the mainstream printing of wrap-around cases used for packaging beer cans is a preprint method using flexographic ink. Although this printing is excellent in cosmetics, if a large amount of anti-slip varnish is applied for easy handling, there is a risk of generating a complicated warp.
On the other hand, the cosmetics of printing is further demanded, and an object of the present invention is to obtain a cosmetic corrugated cardboard having a higher visual effect by using a conventional brown general liner as a substrate to be printed.

The present invention has been made in view of the above-described conventional problems, and has an object of enhancing the design as a cosmetic corrugated cardboard and having a unique visibility so that it can cope with the prevention of counterfeiting and the ease of handling. It is said.

The present invention adopts the following configurations (1) to (5) in order to solve the above problems.
(1) In a corrugated cardboard using a preprint liner provided with a printed layer and further provided with an overprint varnish layer,
The embossed cardboard is characterized in that the preprint liner is embossed in a line shape.

(2) The embossed corrugated cardboard according to (1), wherein the line-like embossing is composed of a horizontal line group and a vertical line group, and is alternately arranged in a checkered pattern.

(3) The embossed cardboard according to (1) or (2), wherein the vertical line group and the horizontal line group have a pitch of 0.1 to 1.0 mm.

(4) The printing layer is composed of a solid printing layer and a pattern printing layer such as letters, numbers or logo marks, and a line-shaped embossing is applied to a preprint liner in which an overprint varnish layer is provided on the pattern printing layer. In the embossed cardboard
Embossing according to any one of items (1) to (3), wherein the solid printed layer has a 75 ° gloss of 5 to 20% and the overprint varnish layer has a 75 ° gloss of 25 to 45%. Corrugated cardboard.

(5) In a corrugated cardboard using a preprint liner provided with a print layer and further provided with an overprint varnish layer,
An embossed corrugated cardboard characterized in that the preprint liner is composed of a vertical line group and a horizontal line group, and is embossed alternately arranged in a checkered pattern to prevent counterfeiting.

According to the present invention, solid printing portions and characters are printed by embossing the preprint liner in parallel lines, that is, by arranging the vertical line groups and the horizontal line groups alternately in a checkered pattern. Due to the difference in glossiness from the overprint varnish at the part, a unique visual effect is obtained and it is also effective in preventing forgery.
Moreover, the embossing, that is, the line-like irregularities on the surface of the box, led to an improvement in the handling of the cardboard.

The embossed cardboard of the present invention will be described.
The corrugated cardboard targeted by the present invention is a corrugated cardboard for gifts that further enhances the design of cosmetic cardboard that is preprinted on a brown general liner.

In general, cosmetic corrugated cardboard is manufactured by preprint printing. However, when a brown general liner is used as a printing substrate, cosmetic properties and printing effects may not be sufficient. Therefore, white liners and coated white balls may be used for the printing substrate, but there are problems of deterioration of ink drying property and cost increase. There is a need for improved printing effects.

The present invention is preprinted on a brown general liner, then embossed in a line shape, and further bonded by a corrugator to be used as a cosmetic cardboard for gifts.
Although preprint printing can be performed by a gravure printing machine, flexographic printing using water-based ink is preferable when the conditions of wide width and relatively low cost are satisfied.
Here, flexo preprint printing is possible from 5 to 6 printing colors to a maximum of 9 colors.
For example, it is possible to enhance the design of the overprinting by performing the design printing after the white solid printing is applied to the brown general liner.

In the present invention, a line-shaped embossing is applied to a preprint liner in which a printing layer is provided on a brown general liner and an overprint varnish layer is further provided.
This line-shaped embossing process consists of horizontal line groups and vertical line groups, which are alternately arranged in a checkered pattern.
Here, the line is an infinite number of straight lines, and the straight lines are arranged in parallel at equal intervals. Further, the horizontal line and the vertical line are horizontal line-shaped unevenness and vertical line-shaped unevenness, and an angle rotated by 90 ° is preferable from the viewpoint of easy visual recognition.
The pitch between the horizontal line group and the vertical line group is preferably 0.1 to 1.0 mm. If the pitch of the line-shaped unevenness is less than 0.1 mm, the shadow of the line-shaped unevenness will not be visible even if it is slanted, and if it exceeds 1 mm, it will be visible even under normal conditions, depending on the depth of the unevenness Therefore, it is not preferable as a forgery prevention measure. Note that the pitch / depth relationship of the line-shaped unevenness is generally pitch / depth≈10.
Furthermore, the horizontal line and the vertical line may have the same pitch, but a slight difference increases the visual effect due to the aspect ratio.
In addition, the checkered pattern composed of a horizontal line group and a vertical line group is not particularly limited in size, but is preferably 3 to 10 mm square. More preferably, the visual effect of a checkered pattern of about 6 mm square is great.

In the present invention, the printing layer is composed of a solid printing layer and a pattern printing layer such as letters, numbers, logo marks, etc., and a preprint liner in which an overprint varnish layer is provided on the pattern printing layer is embossed in a line shape. Apply.
The 75 degree glossiness of the embossed solid print layer is 5 to 20%, and the 75 degree glossiness of the embossed overprint varnish layer is 25 to 45%.
By embossing, the 75 degree glossiness of the solid print layer is low and finished in a matte tone, whereas the 75 degree glossiness of the overprint varnish layer is finished in a dull tone. Due to the difference in glossiness between the two and the line-like glossiness when viewed obliquely, a unique visual effect is obtained, which is excellent in design and useful for preventing forgery.
In addition, by printing the mat varnish on the solid printing portion, the mat property can be improved and the overprint varnish layer can be made to stand out from the dull tone.
FIG. 1 shows a schematic diagram of an embodiment of a printed matter of the present invention.

The embossed corrugated cardboard of the present invention is easy to hold during loading and unloading during transportation due to the unevenness of lines.

The line-like embossing of the present invention is applied to the preprinted printing surface after preprinting and before pasting with a corrugator.
Specifically, pressure heat treatment is performed with a roll embossing machine using an engraving roll engraved with a desired line-shaped emboss pattern. This roll embossing machine may be provided in the final process of the preprint printing machine or in the feeding process of the corrugator. Further, it may be used in combination with another offline operation, for example, a rewinding operation. In addition, since the line-like embossing is performed on the preprint printing surface, it can be synchronized with the pattern printing in accordance with the line mark of the preprint printing.

Hereinafter, the present invention will be described according to examples.

<Example 1>
Oji Paperboard OFC180 liner was prepared as a substrate for preprint printing, and preprint flexographic printing was performed on the surface of the substrate.
In the preprint printing, solid printing was performed with white ink (white made by Sakata Inks) for the first color, solid printing was further performed with paddy ink (Sakata Inks made), and character printing was performed with gold ink (made by Sakata Inks). Subsequently, printing was performed on the solid printing section with mat varnish (Machin varnish made by Sakata Inks), and overprint varnish (UV clear ink made by Toyo Ink Manufacturing Co., Ltd.) was printed on the character printing portion on the final cylinder of the printing machine. Ultraviolet irradiation was performed to obtain a preprint liner.
The resulting preprint liner was subjected to embossing pressure heat treatment in a checkered pattern consisting of a horizontal line group and a vertical line group in a roll embossing machine installed in a rewinding device. The checkered pattern at this time is 6 mm square, the pitch of the horizontal line group is 0.3 mm and the depth is 40 μm, the pitch of the vertical line group is 0.4 mm and the depth is 40 μm.
The resulting embossed liner had a 75 ° glossiness (JIS P 8142) of the solid printing portion of 12% and a 75 ° glossiness of the overcoat varnish portion of 32% in gold character printing.
Next, using a corrugator, the embossed liner was used as a front side liner, and a back side liner [Oji Paperboard ABM170] and a core [Oji Paperboard Core 125] were used to produce a B flute corrugated sheet. Subsequently, the corrugated cardboard sheet was punched out with a box making machine to produce a wrap-around cardboard.
When the obtained cardboard was stacked, it was easy to handle.
These evaluation results are shown in Table 1.

<Comparative Example 1>
In Example 1, everything was performed in the same manner as in Example 1 except that the preprint liner was not embossed.

<Example 2>
In Example 1, everything was performed in the same manner as in Example 1 except that printing was not performed with matte varnish on the solid print portion of the ridges by preprint printing.

<Comparative example 2>
In Example 1, everything was performed in the same manner as in Example 1 except that the overprint varnish was not printed on the character printing part by preprint printing.

<Comparative Example 3>
In Example 1, everything was performed in the same manner as in Example 1 except that the embossing was changed to halftone dot embossing instead of the line-like embossing.

As is apparent from the results shown in Table 1, in the examples, a unique visual effect can be obtained by applying a line-like embossing process. In addition, it is easy to handle.
In the comparative example, the design is poor.

The embossed cardboard of the present invention provides a unique visual effect and can be used to prevent forgery. Furthermore, in addition to beer cans, it can be used for high-quality gift cardboards such as packaging materials for electrical products.

The schematic diagram of the embossed liner of this invention is shown.

Explanation of symbols

1: Overcoat OP varnish 2: Patterns such as characters 3: Horizontal line 4: Vertical line

Claims (5)

In corrugated cardboard using a preprint liner provided with a printed layer and further provided with an overprint varnish layer,
An embossed cardboard, wherein the preprint liner is embossed in a line shape. The embossed corrugated cardboard according to claim 1, wherein the line-shaped embossing is composed of a horizontal line group and a vertical line group, and is alternately arranged in a checkered pattern. The embossed cardboard according to claim 1 or 2, wherein the pitch of the vertical line group and the horizontal line group is 0.1 to 1.0 mm. Embossing in which a printing layer consists of a solid printing layer and a pattern printing layer such as letters, numbers, logo marks, etc., and a preprint liner in which an overprint varnish layer is provided on the pattern printing layer is subjected to line-like embossing In cardboard,
The embossed cardboard according to any one of claims 1 to 3, wherein the solid printed layer has a 75 degree gloss of 5 to 20% and the overprint varnish layer has a 75 degree gloss of 25 to 45%. In corrugated cardboard using a preprint liner provided with a printed layer and further provided with an overprint varnish layer,
An embossed corrugated cardboard, wherein the preprint liner is composed of a group of vertical and horizontal lines and is embossed alternately arranged in a checkered pattern to prevent forgery.

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