JPH09134129A - Cylindrical label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical label which can hold an excellent print layer without spoiling the outward appearance when the cylindrical label which is folded flatly is opened and put on. SOLUTION: A cylindrical label base material 1 formed of a synthetic resin film having the print layer 3 on its inside surface side is folded flatly and when the label is put on a container, the label base material 1 is opened. The print layer is thicker at both folding parts 7 and 8 formed when the label is folded flatly than at other parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular label used as, for example, a heat shrinkable label or a stretch label.

[0002]

2. Description of the Related Art Generally, a tubular heat-shrinkable label or a tubular label such as a stretch label has a printing layer formed on the inner surface side of a synthetic resin film such as a heat-shrinkable film or a stretch film. After joining both ends of the base material to form a tube shape, it is wound into a roll in a state of being folded into a flat shape and cut into a predetermined width while being sequentially fed out by an automatic mounting device or the like to form a label. After that, it is opened in a cylindrical shape and externally fitted and attached to a mounted body such as a container.

[0003]

As described above, since such a tubular label is wound into a roll or the like in a flatly folded state, it is folded as shown in FIG. Moreover, the printed layer 22 formed on the folds 23 at both ends may be cracked.

Further, when a tubular label having cracks in ink is attached to a container or the like, it is opened from a flat shape and externally fitted on the container, and then a heat-shrinkable label is heated and shrunk. Then, it is brought into close contact with the container, but as shown in FIG. 7B, a straight line 24 lacking the printing layer 22 is apparently formed in the vertical direction of the cylindrical label, which impairs the appearance.

Further, in the case of a stretch label, if the above-mentioned cracks are present in the printed layer in order to expand the diameter of the tubular stretch label when it is externally fitted to the container, the crack will occur when expanding the diameter. However, the same problem as in the case of the heat-shrinkable label occurs that the sheet spreads and the appearance is impaired.

The present invention has been made to solve such a problem, and when a cylindrical label folded in a flat shape is opened and attached, a good print layer is maintained without spoiling the appearance. It is to provide a tubular label that can be.

[0007]

[Means for Solving the Problems]

(Structure) According to the present invention, as a means for solving such a problem, a cylindrical label substrate 1 made of a synthetic resin film having a printing layer 3 on the inner surface side is formed by being flatly folded. In addition, when the label label 1 is attached to the container 10, the printing label 3 formed on both folds 7 and 7 of the tubular label in which the label substrate 1 is opened is the other part. The thickness of the printed layer 3 is smaller than that of the printed layer 3 formed in 1.

(Operation) That is, as described above, the cylindrical label base material 1 made of a synthetic resin film having the printing layer 3 on the inner surface side is formed by being flatly folded and mounted on the container 10. In this case, in the tubular label in which the label base material 1 is opened, the printing layer 3 formed on both folds 7 and 7 when folded flat is the printing layer 3 formed on the other part. Since the thickness of the printed layer 3 is thinner than that of the printed layer 3, cracks are less likely to occur in the printed layer 3 formed in the folds 7 and 7, and the flat label substrate 1 is opened to be attached to an object such as a container. Even when mounted, the printed layer 3 will not be lost due to cracks.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is a label base material having a print layer 3 formed on one surface side of the heat-shrinkable film 2,
The heat-shrinkable film 2 is a known film made of polyester, polyvinyl chloride, polystyrene, polypropylene, polyethylene, or the like, and has a property of heat shrinking in at least one direction at a predetermined shrinkage rate.

The label base material 1 is formed into a cylindrical shape so that the printing layer 3 is on the inner surface side, both ends thereof are joined by welding, an adhesive or the like, and the contraction direction is the circumferential direction. It is folded flat so that 7, 7 are at both ends.

The printing layer 3 is a colored ink layer 4 having a design, a trade name, etc. as shown in FIGS.
And a colored ink solid printing layer 5 applied on the upper surface of the colored ink layer 4 so that the ground color has the same thickness on the entire surface, and a white ink layer 6 applied on the upper surface of the colored ink solid printed layer 5 with a white ink over the entire surface. The coloring ink layer 4 is coated with an arbitrary color such as blue or red on a design portion or the like, and the coloring ink solid printing layer 5 is coated with a coloring ink for a ground color such as silver on substantially the entire surface. Has been done.

The white ink layer 6 is applied to the upper surface of the colored ink layer 4 by gravure printing so as to have a thickness of about 1 to 6 μm in a substantially solid pattern. It is applied so that the thickness becomes thin.

The white ink layer 6 near the folds 7 and 7 is formed so that the thickness gradually decreases toward the folds 7 and 7, and the white ink at the thinnest portion is formed. The layer 6 is formed to have a thickness of about 0.5 to 2 μm. Since the white ink of the white ink layer 6 usually contains titanium oxide and the like, the film when dried is hard and cracks due to ink breakage are more likely to occur than other colored inks.

Since the thickness of the white ink layer 6 is thin at the folds 7, 7, as shown in FIG.
As shown in (b), the fold portion 7 when flatly folded is easily bent and easily formed into a flat shape, and since the thickness of the white ink is thin, ink crease is less likely to occur when folded.

Next, the case of manufacturing the tubular label 8 having the above-mentioned structure will be described. First, a sheet is formed from the resin such as polyester by a known method such as melt extrusion, and the sheet is stretched in the width direction to a predetermined ratio to form a heat-shrinkable film 2 having a property of heat shrinking in the direction. Form.

Further, if necessary, one surface side of the heat-shrinkable film 2 is subjected to a surface treatment such as corona discharge treatment, and the treated surface is provided with a colored ink layer 4 having a product name, a design or the like with a colored ink of an arbitrary color. Is provided by gravure printing,
Further, a solid printing layer 6 of a colored ink, such as silver, for the background color is formed on the entire upper surface of the colored ink layer 4.

A white ink layer 6 is formed by further applying a white ink on the upper surface of the colored ink solid printing layer 6.
At this time, as shown in FIG. 3A, the heat-shrinkable film 2
In addition to the predetermined positions 6a, 6a provided at two positions in the longitudinal direction of the white solid ink, the white ink is applied to the entire surface in a solid state and the white solid portion 6b
On the other hand, a white ink layer 6 having a smaller thickness than the white solid portion 6b is formed at predetermined positions 6a, 6a.

The white ink at the predetermined positions 6a, 6a is formed so as to gradually become thinner toward the bent portions 7, 7 at the center of the predetermined positions 6a, 6a, and the vicinity of the bent portions 7, 7 is formed. The ink thickness is the thinnest. The thickness of the white ink in the bent portions 7, 7 having the smallest ink thickness is about 0.5 to 2 μm, and the thickness of the white ink layer 6 in the white solid portions 6b other than the predetermined positions 6a, 6a is about 2 to. The thickness is preferably about 6 μm.

In order to make the thickness of the white ink layer 6 partially different in this way, for example, in the case of gravure printing, a cell provided in a gravure printing cylinder is provided at the predetermined positions 6a, 6a. The thickness of the white ink layer 6 is adjusted by forming the depth so that it becomes shallower than the depth of the other solid white portions 6b.

Further, the label substrate 1 on which the printing layer 3 consisting of the coloring ink layer 4, the coloring ink solid printing layer 5 and the white ink layer 6 is formed on the heat-shrinkable film 2, is placed at the center of the predetermined positions 6a, 6a. As the folded parts 7 and 7, the printing layer
Fold so that 3 is the inner surface, polymerize both ends, and join by welding or adhesive to form a flat tubular shape with a diameter slightly larger than the target container 10 (see FIG. 3B). .

Further, this flat cylindrical label substrate 1
Is wound on a roll (see FIG. 3C) and cut into a predetermined size to form a tubular label 8.

Next, the case where the tubular label 9 thus formed is attached to the container 10 as a heat-shrinkable label will be described.

First, the flat cylindrical label 9 is opened and fitted over the container 10 from above. At this time, as shown in FIG. 4, since the diameter of the tubular label 9 is formed to be slightly larger than the diameter of the container 10, it is attached to the container 10 with some looseness.

At this time, since the tubular label 9 was folded in a flat shape until it was attached to the container 10, the folds 7 and 7 in the flat state had creases, as shown in FIG. The folds 7 and 7 are mounted in a state of being slightly separated from the container.

Further, in this state, the cylindrical label 9 is heated to be heat-shrinked and closely attached along the shape of the container 10 (see the chain double-dashed line in FIG. 4).

Therefore, at the time of heat shrinkage, the folds 7 and 7 are formed.
The shrinkage a of the print layer 3 becomes larger than the shrinkage b of the other portion, and the print layer of the folds 7 and 7 is concentrated to a large extent. Since the ink layer 6 is thinly formed in the vicinity of the folds 7 and 7, the white ink does not look particularly dark in the portion having a large shrinkage ratio.

Further, since the folds 7 and 7 have no cracks due to ink breakage, the appearance of the printed layer 3 is not damaged even after shrinkage.

In the above embodiment, the label base material 1 made of the heat-shrinkable film 2 having the printing layer 3 provided on the inner surface side was formed as a flat tube-shaped heat-shrinkable label. In addition to the flexible label, for example, a stretch label having a label substrate 1 having a printing layer 3 formed on the inner surface side of a tubular stretch film having a self-stretching property that is folded flat can be formed.

Also in the case of a tubular label formed as a stretch label, by making the thickness of the printing layer 3 of the folds 7, 7 when the stretch film is folded flat, the thickness of the printing layer 3 is thinner than that of the other portions. It is possible to prevent the print layer 3 from cracking.

When such a stretch label is used, when it is attached to the container, the diameter of the stretch label is once expanded so as to be fitted onto the container, and the stretch label is attached to the container.
At this time, if the print layer 3 has cracks, the cracks are particularly spread and become conspicuous. However, by forming the print layer at the fold portion thin as described above, cracks are less likely to occur.

In the above embodiment, the printing layer 3 is composed of the colored ink layer 4, the colored ink solid printing layer 5 and the white ink layer 6, and the coating thickness of the white ink layer 6 is directed to the folds 7 and 7. The thickness of the printing layer 3 is formed so as to be thin in this portion by gradually decreasing the thickness, but the structure of the printing layer 3 is not limited to this.
For example, as shown in FIG. 6A, the white ink layer 6 may be formed to have a constant thickness so that it is thinner in the vicinity of the fold portions 7 and 7 than in other portions. The white ink layer 6 is applied to the two layers of the lower layer 6c and the upper layer 6d as shown in Fig. 5, and the upper layer 6d is not applied to the folds 7 and 7 and the lower layer 6c is not applied.
You may apply | coat only one layer and thin the thickness of the printing layer 3 of the said part.

Furthermore, when not only the white ink layer 6 but also the colored ink solid printed layer 5 and the colored ink layer 4 are thinly formed at the folds 7 and 7, the printed layer 3 is more reliably cracked. Can be prevented. Moreover,
When the heat-shrinkable label is formed such that the color ink solid printing layer 5 and the color ink layer 4 are also thinned at the folds 7 and 7, the folds are the same as in the above-described embodiment. Even if the area is most shrunk due to the creases in 7, 7 and the printing is concentrated, the design after shrinking and the darkness of the ground color are the same as those of other areas, and the appearance is better. Can be maintained.

Further, it is not necessary to use a metallic color ink such as gold or silver for the colored ink solid printing layer 5, but it is also possible to use a background color ink of a color suitable for the design such as blue or red, Further, when the background color is white, it is not necessary to provide such a colored ink solid printing layer 5. However, in the case of a metal-colored ink, since it contains metal powder or the like as a coloring component, it becomes harder when dried as compared with a normal colored ink, so that cracks due to ink breakage easily occur, similar to the above white ink. Therefore, when such an ink is used as a background color, it has a particularly effective effect of preventing the occurrence of cracks.

Further, in the above embodiment, the fold portion
The white ink layer 6 was formed so that the thickness of the white ink layer 6 of 7 and 7 was about half the thickness of the white ink layer 6 of the other portions. Although the thickness of the ink layer 6 is not particularly limited to this,
When the label base material 1 is formed into a tubular shape and further folded to form a flat shape, the printed layer 3 of the folds 7 and 7 is appropriately cracked according to the ink material so that cracks due to ink breakage do not occur. It is necessary to set.

Further, the printing method of the printing layer 3 is not limited to the gravure printing as in the above embodiment, and other known printing methods capable of printing on the film as described above,
Moreover, any means capable of adjusting the thickness of the printing layer 3 can be applied to the tubular label of the present invention.

[0037]

As described above, the tubular label of the present invention is
Even when folded and formed into a flat shape, the printed layer on the inner surface side along the fold portion does not cause cracks due to ink breakage. Therefore, even when the printed layer is opened from the flat state and attached to the container, no printing layer is formed. Is a cylindrical label with no damage and good appearance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a tubular label according to the present invention.

FIG. 2A is an enlarged sectional view of an essential part showing a state where a print layer is formed on a heat-shrinkable film, and FIG. 2B is an enlarged sectional view of an essential part showing a state where (A) is formed into a tubular shape.

3A is a front view of a label base material showing a state where a white ink layer is formed, FIG. 3B is a perspective view of a main part showing a state where the label base material is formed into a cylindrical shape, and FIG. 3C is a label. The principal part perspective view which shows the state which made the base material into the shape of a roll.

FIG. 4 is a cross-sectional view showing a state where a tubular label is attached to a container.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6A is an enlarged cross-sectional view of an essential part showing a tubular label of another embodiment, and FIG. 6B is an enlarged cross-sectional view of an essential part of a tubular label of another embodiment.

FIG. 7A is an enlarged cross-sectional view of a main part of a conventional cylindrical label,
(B) is an enlarged sectional view of an essential part showing a case where a conventional cylindrical label is opened.

[Explanation of symbols]

 1 Label Base Material 2 Heat Shrinkable Film (Synthetic Resin Film) 3 Printing Layer 4 Colored Ink Layer 5 Colored Ink Solid Printing Layer 6 White Ink Layer 7, 7 Folded Area

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[Procedure amendment]

[Submission date] November 22, 1995

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

[Figure 3]

Claims (2)

[Claims] 1. A cylindrical label base material (1) made of a synthetic resin film having a printing layer (3) on the inner surface side is formed into a flat shape by folding and is attached to a container (10). Is a cylindrical label in which the label base material (1) is opened, the printing layer (3) formed on both folds (7), (7) when folded flat is on the other part. A cylindrical label characterized by being formed thinner than the formed printing layer (3). 2. The printing layer (3) is a colored ink layer (4).
And a white ink layer (6) formed on the upper surface of the colored ink layer (4), the thickness of the white ink layer (6) is reduced at the folds (7) and (7). The tubular label according to claim 1, which is provided.