JPS6115019Y2 - - Google Patents

Description

[Detailed Description of the Invention] A video cassette case for television recording is housed in a packaging sac for protection during distribution, storage, and handling.

The present invention relates to the improvement of this packaging bag, and in particular improves the surface characteristics and cosmetic properties of the packaging bag.

Usually, this type of packaging sack uses cardboard, a synthetic resin sheet, or a composite laminated sheet of these as a substrate, and after applying the required printing, is adhesively molded into a sack shape.

This invention not only gives the surface of the packaging bag a faded metallic luster and a three-dimensional effect with a colored printed pattern,
The purpose is to improve the slip resistance and abrasion resistance of the surface, and in particular, as a material sheet for packaging bags, a thin layer of aluminum is laminated on the surface, a colored printed layer pattern is provided on that surface, and the entire top surface is further covered with a thin layer of aluminum. After the transparent synthetic resin layer is applied, a large number of transparent small protrusions arranged in a pattern are distributed and fixed on the surface by screen printing with light-curable transparent ink, and this surface is made into a dry surface to achieve the above purpose. The effects of this are obtained.

Hereinafter, the present invention will be explained with reference to the embodiments shown in the drawings. The first is a perspective view of a packaging sack S, on the outer surface of which a required pattern symbol 3 is printed and displayed.

FIG. 2 is a plan view of a blank board showing the surface of the blank board on which the packaging sack S is developed;
FIG. 3 is an enlarged side view of a section of the blank board including a colored printed layer 3 for displaying a pattern.

As shown in FIG. 3, the sheet constituting the packaging sac S is a base sheet 1 made of cardboard, a synthetic resin sheet, or a composite laminated sheet of these.
A thin aluminum layer 2 such as a laminated aluminum foil or a vacuum-deposited aluminum film is laminated, and a desired pattern or symbol is applied to the surface of the thin aluminum layer 2 on the outer surface of the blank plate shown in FIG. After providing a colored printed layer 3 and further laminating a transparent synthetic resin layer 4 on the entire upper surface,
A large number of small transparent protrusions 5 arranged in a pattern are fixed on the surface of the plate using a screen printing method using light-curable transparent ink. A blank board is obtained by marking the folded indented lines.

As shown in FIG. 2, the blank board has a front panel 11, a back panel 12, and a back panel 13 that are continuous in the horizontal direction with folded indented lines. However, trapezoidal flaps 19 and 20 are provided on the top and bottom of the back panel 12, and bending pieces 16 and 17 are provided on the top and bottom of the back panel 13 with bending indented lines, respectively. pieces 16, 17
The side edges of the back panel are sloped edges, and in order to avoid excessively thickening of the parts that are overlapped during sac molding, the thin parts 21 and 22 are formed by pressing the triangular parts demarcated by broken lines. It is as follows.

A specific example of the thin layer structure of the above-mentioned constituent sheet is as follows.

(1) Base paper (manufactured by Daishowa Paper Co., Ltd., each high-quality paper product Ultra H550g) (2) Aluminum foil (7μ thick) (3) Photocurable colored ink, offset printing layer (4) PVC resin stretched film ( (15μ thick) (5) Photocurable transparent ink, silk screen printing layer The transparent small protrusions 5 are formed into a concentric unit pattern by forming a large number of closely adjacent circles, as shown in FIG. 4, for example. A pattern surface is formed in which the transparent small protrusions 5 are distributed repeatedly in a plane, but it is of course possible to form any pattern by suitably combining a large number of straight or curved parallel line patterns, and these transparent small protrusions 5 The portion formed by the fifth group includes the aluminum thin layer 2 on the lower surface of the transparent synthetic resin layer 4, and the colored printing layer 3.
The light incident on the surface or reflected from the surface is refracted and reflected in a complicated manner, and the lens action of the transparent small protrusions 5 is also added, resulting in a rich variety of combinations of iridescent patterns, faded patterns, metallic luster patterns, etc. It provides a cosmetic effect by giving the viewer a change in pattern color.

In particular, in the present invention, the aluminum thin layer 2 and colored printing layer 3 are covered with a transparent synthetic resin layer 4, and hard transparent small protrusions made of photocurable ink are distributed and fixed on the upper surface of the layer, so that scratches and scratches are avoided. It is resistant to scratches and can maintain its cosmetic appearance for a long time.

In addition, the transparent small protrusions are formed by screen printing with photocurable ink, which contains almost no volatile components and is printed in a fine halftone pattern with a 3,000~ This is because it is completely cured by irradiation with ultraviolet light in the 4500 Å range for a few seconds, resulting in an ink with excellent adhesion strength, hardness, and transparency.This photocurable ink is made of unsaturated polyesters, acrylic resins with radically polymerizable groups, and epoxy resins. Preferably, a resin containing a vinyl monomer and a photosensitizer is used.

In order to form a packaging bag from a blank board as shown in FIG.
Depending on the condition of the front and back surfaces, suitable means such as thermocompression bonding, hot air heat compression bonding, high frequency heat compression bonding, or adhesive coating bonding may be used.

As explained above, the packaging bag of the video cassette case of the present invention not only has excellent surface cosmetic properties, but also has scratch resistance, abrasion resistance, anti-slip effect, and antistatic effect due to the thin aluminum layer, and has practical effects. is extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a perspective view of the product, Fig. 2 is a plan view of a blank board with the product expanded, and Fig. 3 is an enlarged cross-sectional side view of the main parts of the blank board. , FIG. 4 is a plan view illustrating an arrangement pattern of transparent small protrusions. 1... Base sheet, 2... Aluminum thin layer,
3...Colored printing layer, 4...Transparent synthetic resin layer, 5...
...Transparent small protrusions.

Claims (1)

[Scope of utility model registration request] A thin aluminum layer 2 is laminated on the surface of a base sheet 1 made of a paper or synthetic resin sheet, or a laminated sheet of a plurality of these sheets.
A colored printed layer 3 is provided on the surface, and a transparent synthetic resin layer 4 is further laminated on the entire surface including the colored printed layer 3, and a large number of transparent small particles arranged in a pattern is formed by screen printing light-curable transparent ink on the surface. A packaging bag for a video cassette case, characterized in that projections 5 are fixed and distributed.