JPH0711970Y2 - Film for tape cartridge packaging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] As illustrated in FIG. 3, various tape cartridges 1 for audio or video are individually stored in a storage case 2 made of plastic or paper. It is sold in a state of being wrapped with the packaging film 3 for each roll or for every few rolls. The packaging film 3 has coloring portions of different colors, and characters or the like indicating the source and contents of the tape cartridge 1 are printed at the same time.

The present invention relates to a packaging film for such a tape cartridge, and has a metal-like coloring having a deep coloring portion, that is, a so-called metallic feeling, is exhibited by overprinting only an ink layer.

[Conventional technology]

As a general conventional technique for producing a high-luminance metallic feeling in the colored portion of this type of packaging film, a metal vapor-deposited film layer such as aluminum is directly or indirectly formed on the film substrate by a sealite process or an opal process. A method of forming the film is known.

In the packaging film in which such a metal vapor deposition film layer is interposed, it is possible to ensure complete concealment, it is easy to see printed characters and the like, and the brightness of the colored ink layer placed on the metal vapor deposition film layer is also excellent. have.

However, when it is attempted to express by changing some colors such as characters on the film and the background color, the vapor deposition process and the printing process are separately required, which is expensive, which is the greatest disadvantage. This type of packaging film is finally subjected to heat shrinkage treatment to prevent wrinkling after packaging, but at that time the entire film is curled due to the difference in heat shrinkage between the film substrate and the metal vapor deposition film layer. And wrinkles may be removed, resulting in poor finish. If a transparent portion is left in a part of the film, the metal vapor deposition film layer is removed in this transparent portion, so that the metal vapor deposition film layer is vulnerable to water and moisture, and thus the outline of the transparent portion is removed. It tends to lack sharpness.

Therefore, as a simple means for expressing the brightness of the colored portion only by ink printing without interposing a metal vapor deposition film layer, for example, red, gold, and white colors are provided on the back surface of the film substrate 20 as shown in FIG. Different colored ink layers 21, 22, 23
Then, a white masking / ink layer 24 also serving as a blocking prevention was sequentially printed and laminated, and the masking / ink layer 24 was packaged so as to face the tape cartridge side (literature unknown). In this case, the colored ink layer contains a known pearl pigment or aluminum pigment in an amount larger than usual, for example, 5 to 10% by weight, based on the ink essence.

[Problems to be solved by the device]

However, in the conventional type in which only printing ink is overprinted, since the mixing ratio of pearl pigment and aluminum pigment in the coloring ink layer is high, the adhesion is poor, and even if a masking / ink layer is interposed, there are drawbacks such as blocking. coming out. No deep metallic coloration. There were problems such as poor concealment.

Therefore, an object of the present invention is to simply print the printing ink on the transparent film base material, to secure the adhesion of the ink layer, and to obtain a high-grade metallic feeling with high brightness of the colored ink layer. The purpose is to obtain a wrapping film for tape cartridges that is excellent in concealability.

[Means for Solving the Problems]

As shown in FIG. 1, the packaging film of the present invention has a colored ink layer 6, 7 partially on the back surface of a transparent film base 5 made of plastic having heat shrinkability. The metallic ink layer 9 is formed on the other parts including the above.
Masking ink layer 10 on metallic ink layer 9
Are sequentially laminated.

The metallic ink layer 9 means that most of the metallic ink layer contains a metal powder such as aluminum powder, but it also includes a metallic ink layer 9 made of ink containing crushed powder of other natural mica and titanium oxide.

[Action]

The packaging film of the present invention is wrapped around the masking ink layer 10 with the masking ink layer 10 facing the tape cartridge 1 side. In this packaging state, the colored ink layers 6 and 7 are visible through the transparent film substrate 5 with the metallic ink layer 9 as a background.

The masking / ink layer 10 functions to prevent blocking and enhance hiding.

[Effect of device]

According to the packaging film of the present invention, the metallic ink layer 9 functions like a metal vapor deposition film layer, and the presence of the metallic ink layer 9 makes the colored ink layers 6 and 7 have excellent brightness and depth. It gives a metallic feel. Nevertheless, since it can be obtained only by overprinting printing ink, it can be manufactured inexpensively as a whole. Colored ink layer 6
Since 7 does not need to contain a large amount of aluminum pigment or pearl pigment itself, the adhesiveness can be secured, and the metallic ink layer 9 and especially the masking ink layer 10 can be made excellent in hiding property.

〔Example〕

In FIG. 3, 1 is a tape cartridge, 2 is a plastic storage case for individually storing the tape cartridge 1, and 3 is a packaging film of the present invention for wrapping the outer periphery in a state where the tape cartridge 1 is stored in the storage case 2. is there.

In FIGS. 1 and 2, the packaging film 3 is shown.
Is a red colored ink layer 6 made of azo red, a yellow colored ink layer 7 made of azo yellow, and titanium oxide on the back surface of the transparent film substrate 5 made of a heat shrinkable plastic film (OPP film). And a white colored ink layer 8 of are printed. Among them, the white colored ink layer 8 is overprinted in two layers 8a and 8b thickly. Furthermore, on these colored ink layers 6, 7, and 8, metallic ink with ink containing fine aluminum particles (so-called silver ink) is used.
The ink layer 9 was overprinted, and finally, a white masking ink layer 10 containing a white pigment such as titanium oxide was printed on the entire surface so that the total thickness was about 15 μm. Reference numeral 11 in the figure is a transparent portion, and the ink layer is not entirely printed on the film substrate 5 in the corresponding portion 11. Characters and figures are displayed at desired positions on the colored ink layers 6, 7, and 8.

The packaging film 3 printed as described above is covered with the masking / ink layer 10 on the outer periphery of the storage case 2 for storing the tape cartridge 1, the film peripheral edges are heat-sealed, and then heat-treated. Remove wrinkles.

In this packaging state, looking at the portion of the red colored ink layer 6 through the outer transparent film substrate 5, the metallic ink layer 9 is in the background, so that it has a high-luminance and deep metallic tone. . Similarly, the portion of the yellow colored ink layer 7 becomes a gold color with a metallic tone and high brightness. Since the portion of the white colored ink layer 8 is thick as a whole, it is hardly affected by the metallic ink layer 9, and the characters and the like displayed on the corresponding portion can be clearly seen. The portion where the metallic ink layer 9 is directly bonded to the transparent film substrate 5 has the same silver color.

[Brief description of drawings]

1 to 3 show an embodiment of a packaging film according to the present invention, FIG. 1 is a sectional view conceptually explaining the contents of the present invention, and FIG. 2 is an overall view in a developed state. FIG. 3 (a) is a schematic plan view, FIG. 3 (a) is a perspective view in the middle of packaging, and FIG. 3 (b) is a perspective view in the packaged state. FIG. 4 is a sectional view for explaining a conventional example. 1 ... Tape cartridge, 2 ... Storage case, 3 ...
Packaging film, 5 ... Transparent film base, 6.7 ...
Colored ink layer, 9 ... metallic ink layer, 10 ... masking ink layer.

Claims (1)

[Scope of utility model registration request] 1. A colored ink layer (6 ..) on a back surface of a transparent film substrate (5) made of plastic having heat shrinkability.
7), a metallic ink layer (9) is formed on other portions including the colored ink layer (6, 7), and a masking ink layer (10) is formed on the metallic ink layer (9) in this order. Films for packaging tape cartridges.