JP2003341717A - Cutout structure of packaging material - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make a perforated part have a color and gloss remaining even when irradiated with a laser beam for obtaining a perforated part in a defective part formed by laser processing. The balance of the packaging material surface with the decorative surface can be adjusted. An underlayer made of an ink containing a substance that does not absorb or reflect a laser beam is laminated under a surface decorative material layer, and the laser beam reaches the underlayer from the surface decorative material layer. Then, a cutout 8 having a perforation 6 formed by laser processing was provided, and the underlying layer 10 was exposed from a defective portion 7 of the perforation 6 formed by laser processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutout structure obtained by laser processing a packaging material.

[0002]

Conventionally, many packing materials having a layered structure in which a plurality of layers are laminated using a synthetic resin material or a paper material have been adopted. Various forms of packaging are formed. In a packaging body made of such a sheet-shaped packaging material, a part of the packaging material is cut open or cut to open the package.
Further, in recent years, in order to open the packaging at a predetermined position, a packaging material before bag making or a packaging material in a state of being a packaging body is provided with a cutout portion in which a perforation is formed by irradiating a laser beam. Is becoming available.

By the way, in the above laser processing for a packaging material in which a synthetic resin material or a paper material is laminated, the synthetic resin structure or the paper fiber structure in the portion receiving the super high energy is sublimated, so that the cutout portion is visible in appearance. So it's just a break. However, since the packaging material has various layer configurations that meet the requirements such as design printing and providing a barrier property against oxygen, etc., there are only perforations in which the sublimation-deficient portions are lined up. In the case of laser processing, it is difficult to see the perforations even if you want to clearly indicate the perforation position, or conspicuously when the packaging design does not want the perforations to be conspicuous. However, there is a problem in that it is not possible to adjust the distinctiveness of perforations and to harmonize with the design of the packaging material surface.

For example, as shown in FIG. 5, a packaging material 1 has a paper layer 3 made of pure white paper or the like as a surface decorative material layer 2 on the outer side of the packaging body, and a layer below it for the purpose of shielding visible light. The reflective layer 4 may be a thin aluminum layer or a vapor deposited aluminum layer, and the base layer 5 may be a polyethylene film layer. In this case, the perforation 6 obtained by performing the laser processing X so as to reach the reflective layer 4 from the paper layer 3 side is the white of the paper layer 3 and the defect portion 7 (laser beam irradiation by laser processing of the perforation 6). The gloss of the reflection layer 4 located at the cut portion where the resin structure, the paper fiber structure, etc. are received and is overlapped is overlapped. In other words, the cutout portion 8 having the perforations 6 makes it difficult to see the perforations 6, and it is not possible to meet the demand for producing a packaging body in which the perforations 6 can be clearly identified from the packaging material 1. Has become. In addition, as shown in FIG.
From the outer side of the package, a protective layer 9 made of a nylon resin layer, a surface decorative material layer 2 made by ink printing, a reflective layer 4 having a barrier property obtained by depositing aluminum on a polyethylene terephthalate film, and a base layer 5 made of a polyethylene film layer.
There is a layered structure. Then, when laser processing X is performed so as to reach the reflective layer 4, perforations 6 in which the aluminum luster of the reflective layer 4 is visible are formed. However, the aluminum luster of the reflective layer 4 is easily noticeable, which is not preferable in terms of design, and it is not possible to obtain a package in which the perforations 6 are not noticeable from the packaging material 1.

The packaging material 1 shown in FIG. 7 has a layer structure including a protective layer 9 of a nylon resin layer, a surface decorative material layer 2 formed by ink printing, and a base layer 5 of a polyethylene film layer from the outer side of the packaging body. Then, if the laser processing X is performed so as to reach the base layer 5, the perforations 6 become almost transparent. On the contrary, this perforation 6 has a considerably low distinctiveness. In particular, as shown in FIG. 8, when the surface decorative material layer 2 has a transparent design, that is, when the surface decorative material layer 2 is not solid printing, a region such as a halftone dot pattern or a line pattern is transparent. When a printed pattern that occupies a high proportion is formed, the distinguishability of the perforations 6 is further reduced. Therefore, there is a problem that it is difficult to find the perforation itself in the packaging body in which the perforation 6 is arranged in the cutout portion 8. The laser processing is adjusted so as not to remove the base layer 5.

In FIG. 5 to FIG. 8, the right part from the line AA shows the state after laser processing, the left part shows the state before laser processing, and the oblique virtual line region in the left part is the defective part. Is shown.

In view of the above circumstances, it is an object of the present invention to leave a tint or luster in a perforated portion formed by laser processing even when irradiated with a laser beam for obtaining the perforation. The purpose of the invention is to adjust the perforation identification and the balance of the packaging material surface with the decorative surface.

[0008]

The present invention has been made in view of the above problems, and an underlayer made of an ink containing a substance that does not absorb or reflects a laser beam is laminated under a surface decorative material layer. Then, a cutout portion having a perforation by laser processing is provided by making a laser beam reach the undercoat layer from the surface decorative material layer side, and the undercoat layer is exposed from a defect portion by laser processing of the perforation. A feature of the present invention is to provide a cutout structure for a packaging material, which solves the above problems. Further, in the present invention, the base layer exposed from the defective portion and the surface decorative material layer around the defective portion may have the same or different colors. Further, the surface decorative material layer and the base layer may be formed by printing in the same print pattern, and the base layer may be formed by printing an ink made of an aluminum paste which is a substance that reflects a laser beam. It is a thing.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in detail based on the embodiments shown in FIGS. It should be noted that the same parts as those of the conventional example shown in FIGS. 5 to 8 are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 shows the first embodiment and corresponds to the conventional example shown in FIG. First, the packaging material 1 is a paper layer 3 made of pure white paper or the like from the outer side of the packaging body.
2 has a layer structure including a surface decorative material layer 2, a base layer 10, a reflective layer 4 made of an aluminum thin layer or an aluminum vapor deposition layer, and a base layer 5 made of a polyethylene film layer. Then, the packaging material 1 having this layer structure is subjected to laser processing X by laser beam irradiation from the outside of the packaging body to form the cutout portion 8. The underlayer 10 is formed by printing or coating an ink containing a metal compound such as aluminum, aluminum oxide, titanium oxide or zinc oxide as a substance that does not absorb or reflects a laser beam. When the perforations 6 are formed by the laser processing X, the laser beam does not act on the lower layer from the underlayer 10 in the portion where the defective portion 7 of the perforations 6 is formed by the laser beam (the underlayer 10 does not absorb the laser beam. (Because of this, or due to reflection), the underlying layer 10 itself appears from the defective portion 7 and the ink color of the underlying layer 10 can be confirmed.

As described above, since the surface decorative material layer 2 of the packaging material 1 is the paper layer 3 such as pure white paper, the ink of the underlayer 10 is made of titanium oxide or the like as a substance that does not affect the action of the laser beam on the lower layer. When a white ink containing a large amount of white ink is used, the base layer 10 of the defective portion 7 and the surface decorative material layer 2 around the defective portion 7 become the same white color, and the perforation 6 is not noticeable at the cutout portion. 8 is obtained. Further, if the color of the ink of the underlayer 10 is different from the white color, the cutout portion 8 in which the distinguishability of the perforations 6 is enhanced.
Will be obtained. The packaging material 1 is a paper layer 3 such as pure white paper.
Although the uppermost surface decorative material layer 2 is formed by the above, the paper layer 3 is not limited to pure white paper, and may be colored paper. That is, by selecting the ink color of the base layer 10 according to the color of the paper layer 3 (surface decorative material layer 2), the perforation 6 can be enhanced in the cutout portion 7 and the surface of the packaging material can be designed. You will be able to make adjustments such as trying to harmonize with.

FIG. 2 shows a second embodiment, which corresponds to the conventional example of FIG. The packaging material 1 comprises a protective layer 9 which is a nylon resin layer, a surface decorative material layer 2 formed by ink printing, a base layer 10 formed by printing or coating, and a polyethylene terephthalate film having a barrier property obtained by aluminum vapor deposition from the outside of the packaging body. It has a layer structure including a reflective layer 4 and a base layer 5 composed of a polyethylene film layer.
Then, the packaging material 1 having this layer structure is subjected to laser processing X by laser beam irradiation from the outside of the packaging body to form the cutout portion 8. As in the case of the first embodiment, in the portion where the defective portion 7 of the perforation 6 is formed by the laser beam, the laser beam does not act on the underlying layer 10 to the lower layer, and the underlying layer 10 itself is exposed from the defective portion 7. After that, the color of the ink of the underlayer 10 can be confirmed. In the case of this packaging material 1, the color of the ink of the underlayer 10
When the color is similar to that of the surface decorative material layer 2, the cutout portion 8 in which the perforations 6 are inconspicuous is obtained. That is, unlike the conventional example, the gloss of the reflective layer 4 is not conspicuous. When the color of the ink of the base layer 10 is a different color from the color of the surface decorative material layer 2, the cutout portion 8 in which the distinguishability of the perforations 6 is enhanced is obtained. Of course, the color of the base layer 10 can be selected, and the design of the package is not impaired as in the conventional example in which the gloss of the reflective layer 4 is noticeable.

FIG. 3 shows a third embodiment, which corresponds to the conventional example of FIG. The packaging material 1 has a layer structure including a protective layer 9 of a nylon resin layer, a surface decorative material layer 2 formed by ink printing, a base layer 10, and a base layer 5 of a polyethylene film layer from the outer side of the packaging body. And the cutting portion 8
In the same manner as in the above-mentioned embodiment, the laser beam does not act on the underlying layer 10 to the lower layer at the portion where the defective portion 7 of the perforation 6 is formed by the laser beam, and the underlying layer 10 itself is exposed from the defective portion 7. As a result, the color of the ink of the underlayer 10 is confirmed, and it is not transparent as in the conventional example. In the case of this packaging material 1, when the color of the ink of the underlayer 10 is set to be similar to the color of the surface decorative material layer 2, the cutout portion 8 having the perforations 6 that are not transparent is obtained, It does not damage the body design. When the color of the ink of the base layer 10 is different from the color of the surface decorative material layer 2, the cutout portion 8 in which the distinguishability of the perforations 6 is further enhanced is obtained.

In each of the above embodiments, the underlayer 10 is formed by solid printing or coating. However, the present invention is not limited to this, and the underlayer 10 may be formed in a linear pattern or a broken line. It can be a pattern, a chain line pattern, a dot pattern, a tint block pattern, or the like, and the density of the pattern may be any density that appears in the cut portion (defective portion) of the perforation. Further, with respect to the ink that constitutes the underlayer 10, the substance that does not absorb or reflects the laser beam may be added in an amount of 1 to 40% (mass%) depending on the surface design and hue of the packaging material. Good.

FIG. 4 shows a fourth embodiment and corresponds to the conventional example of FIG. As in the third embodiment, the packaging material 1 is, from the outer side of the packaging body, a protective layer 9 of a nylon resin layer, a surface decorative material layer 2 formed by ink printing, a base layer 10, and a base layer 5 of a polyethylene film layer. It is a layered structure. Further, the surface decorative material layer 2 is a printed pattern having a high proportion of a transparent area such as a halftone dot pattern or a line pattern.
And are printed in the same print pattern to form a transparent packaging material 1. In the packaging material 1, the base layer 10 is formed by printing an ink made of an aluminum paste which is a substance that reflects a laser beam.
Then, in the cutout portion 8, in the defective portion 7 formed by laser beam irradiation, the underlying layer 10 remains and is exposed from the defective portion 7, whereby the aluminum color of the underlying layer 10 is confirmed. It is not transparent. That is,
Even with this packaging material 1 made of a transparent material, the cutout portion 8 in which the aluminum color can be confirmed in the defective portion 7 of the perforation 6 where the underlayer 10 is exposed and the discrimination of the perforation 6 is enhanced
Is obtained. The laser processing is adjusted so as not to remove the base layer 5.

[0015]

According to the present invention described above, in the cut-out portion having perforations by laser processing, it is possible to adjust the distinguishability of perforations and to provide a cut-out portion having perforations in conformity with the decorative surface and design of the packaging material. It is possible to obtain such an effect that it has excellent practicality.

[Brief description of drawings]

FIG. 1 shows a first example of a cutaway structure of a packaging material according to the present invention, (a) is an explanatory view showing a cutaway section in a state before laser processing, and (b) shows laser processing. It is explanatory drawing which shows the cutoff part to be provided in a cross section.

FIG. 2 shows a second example, (a) is an explanatory view showing a cut portion in a state before laser processing in a cross section, and (b) is an explanatory view showing a cut portion to be laser processed in a cross section. Is.

FIG. 3 shows a third example, (a) is an explanatory view showing a cut portion in a state before laser processing in a cross section, and (b) is an explanatory view showing a cut portion to be laser processed in a cross section. Is.

4A and 4B show a fourth example, (a) is an explanatory view showing a cut portion in a state before laser processing in a cross section, and (b) is an explanatory view showing a cut portion subjected to laser processing in a cross section. Is.

FIG. 5 is an explanatory view showing a cross section of a cutout portion of a conventional example in which a paper layer is a surface decorative material layer.

FIG. 6 is an explanatory view showing a cross section of a conventional example having a reflective layer.

FIG. 7 is an explanatory view showing a cross section of a conventional example having no reflective layer.

FIG. 8 is an explanatory view showing a cross section of a conventional example of a transparent design.

[Explanation of symbols]

1 ... Packaging 2 ... Surface decorative material layer 6 ... Perforation 7 ... Defect 8 ... Cutout 10 ... Underlayer X ... Laser processing

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshiyuki Maeda             1-5-1 Taito, Taito-ku, Tokyo Toppan stamp             Imprint Co., Ltd. F term (reference) 3E086 AB01 AC12 BA04 BA24 BB31                       BB61 DA08                 4F100 AB10B AT00B BA25 DC13B                       DC21A EJ30 EJ303 EJ52                       EJ522 GB15 HB00A HB31B                       JD06B JD10B JL10A JN06B                       JN28

Claims (3)

[Claims] 1. A base layer made of an ink containing a substance which does not absorb or reflects a laser beam is laminated under the surface decorative material layer, and the laser beam is made to reach the base layer from the surface decorative material layer side. A cut-out structure of a packaging material, wherein a cut-out part having perforations by laser processing is provided, and the underlayer is exposed from a cut-out part of the perforations by laser processing. 2. The cutout structure of a packaging material according to claim 1, wherein the underlying layer exposed from the defective portion and the surface decorative material layer around the defective portion have the same or different colors. 3. The surface decorative material layer and the base layer are formed by printing in the same print pattern, and the base layer is formed by printing an ink made of an aluminum paste which is a substance that reflects a laser beam. The cutout structure of the packaging material according to Item 1.