JP2001179858A - Continuous material of heat shrinkage label, heat shrinkage label and container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous material of a heat shrinkage label, the heat shrinkage label and a container capable of suitably preventing the deterioration of the appearance due to local unevenness in a density on a print layer after heat shrinkage. SOLUTION: The print layer 3 is provided on a long-sized heat shrinkage film 2. Cut parts obtained by cutting the film 2 along lines P to be cut,... set at an interval in the longitudinal direction are sheathed and mounted over between the shell 8 and the tapered part 9 of the container body 7. The layer 3 is continuously formed in the longitudinal direction of the film 2. In this case, the color density of the print layer 3b on a predetermined region Lt of one side from the line P is thinned substantially corresponding to the radial reduction ratio of the tapered part 9. The color density of the print layer 3c of a predetermined region Lb of the other side from the line P is also thinned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuum of a heat-shrinkable label having a printed layer formed on one side of a heat-shrinkable film, a heat-shrinkable label, and a container fitted with the heat-shrinkable label. It is.

[0002]

2. Description of the Related Art A tubular heat-shrinkable label, which is one embodiment of a heat-shrinkable label, is formed by joining both ends of a base material having a printed layer formed on the inner surface side of a heat-shrinkable film made of synthetic resin. After being formed into a flat shape, it is wound up in a roll shape in a flat folded state, cut into a predetermined length while being sequentially fed out by an automatic mounting device or the like, and then opened into a cylindrical shape and externally fitted to the object to be mounted. Is what is done.

[0003] Examples of the mounted body include beverage containers such as PET bottles and glass bottles. These beverage containers usually have a tapered portion whose diameter is reduced from the body to the mouth, and the heat-shrinkable label is removed from the tapered portion to the body and to the bottom end of the body. Some are fitted and fitted.

However, according to this example, since the heat-shrinkable film shrinks greatly in the tapered portion, the heat-shrinkable film shrinks due to the heating, so that the color density of the printed layer in the tapered portion is reduced. It tends to be darker than the color density. In this state, the commercial value may be impaired due to poor appearance. In particular,
To obtain a container (green tea bottle, etc.) having the appearance of a colored green container by externally attaching a heat-shrinkable label with a transparent green print to a transparent container, etc. There is a problem that color unevenness is conspicuous.

Therefore, when forming a printing layer, it is necessary to change the color density of the printing layer in accordance with the amount of shrinkage of the heat-shrinkable film. Occurs. As a conventional example of this technology, a printing layer is formed by a gravure plate in which the depth of a concave point or the length of a bank around a concave point is adjusted in accordance with the amount of shrinkage of a heat-shrinkable film in a tapered portion from a body portion of a container body. A gravure printing technique (the invention described in Japanese Patent Application Laid-Open No. 63-274543) is known.

An embodiment according to this technique is shown in FIG. The heat-shrinkable label is shown in FIG. 9 (b) in the middle of the tapered portion of the container body (points A and B), the boundary between the tapered portion and the body (point C), and the middle of the body (point D). Through the bottom end of the body (not shown), but the tapered portion is gently inclined, and the amount of shrinkage of the heat-shrinkable film increases from point C to point A. Become. Therefore, FIG.
As shown in (a), the bank length of the gravure plate is A from point C.
The color density of the print layer is gradually reduced at points where the amount of shrinkage is large. This allows
Since the print layer after contraction has the same density at any position, the appearance is improved and the commercial value is not impaired.

[0007]

As described above, since the heat-shrinkable label is used by cutting a roll-shaped continuous body one by one, the heat-shrinkable label is formed on a long heat-shrinkable film. By repeatedly printing one print pattern, the print layer is formed continuously in the longitudinal direction of the heat-shrinkable film. That is, as shown in FIG. 10 (a), if the vertical axis is the color density of the print layer and the horizontal axis is the longitudinal direction of the heat-shrinkable film, the space between the broken lines in the figure is the print layer corresponding to one container. , The broken line is the planned cutting line.

However, in the conventional print pattern, the density of the print layer rapidly rises at the boundary (broken line) between the print layer corresponding to one container and the print layer corresponding to the next container. If the position is slightly shifted and cut along, for example, a chain line, the color density of the print layer at the upper edge of the heat-shrinkable label after shrinkage becomes very dark, and the appearance of the print becomes very poor. Such a problem is manifested by a mechanical accuracy error of the cutting device or the transport device.

As a means for avoiding the above problem, as shown in FIG. 10B, a printing pattern in which a clear portion without a printing layer is provided on both sides of a cutting line of the heat shrinkable label can be considered. Transparent strips are formed at both upper and lower edges of the heat-shrinkable label, which again causes a problem that the appearance is deteriorated.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to suitably prevent a print layer after heat shrinkage from being locally uneven in shading and from being deteriorated in appearance. The first object is to provide a continuum of heat-shrinkable labels and a heat-shrinkable label that can be made, and at the same time, to provide a container that can enhance the commercial value by giving a sense of unity of color by the printed layer of the heat-shrinkable label Is the second task.

[0011]

In order to solve the above-mentioned problems, a continuum of a heat-shrinkable label according to the present invention comprises a long heat-shrinkable film 2 provided with a printing layer 3 and a heat-shrinkable film 2.
Scheduled cutting lines P set with an interval in the longitudinal direction of.
In the continuous body of the heat-shrinkable label, which is cut and cut along the body portion 8 and the tapered portion 9 of the container main body 7 so that the print layer 3 is attached in the longitudinal direction of the heat-shrinkable film 2. And the color density of the print layer 3b in the predetermined region Lt on one side from the planned cutting line P is made thinner in advance so as to substantially correspond to the diameter reduction ratio of the tapered portion 9 of the container body 7. At the same time, the predetermined area L on the other side from the planned cutting line P
Also, the color density of the printing layer 3c in b is reduced in advance.

The heat-shrinkable label according to the present invention is a heat-shrinkable label having a printing layer 3 on the heat-shrinkable film 2 and fitted over the body 8 and the tapered portion 9 of the container body 7. Then, the print layer 3 is formed on both edges 2 of the heat-shrinkable film 2.
b, 2c, and the color density of the printing layer 3b in a predetermined area Lt on one end side of the heat-shrinkable film 2 is previously thinned substantially corresponding to the diameter reduction rate of the tapered portion 9 of the container body 7. In addition, the color density of the print layer 3c in the predetermined region Lb on the other end side of the heat-shrinkable film 2 is also reduced in advance.

Therefore, according to the continuum of the heat-shrinkable label or the heat-shrinkable label, the color density of the printing layer 3 b on one side Lt of the both end regions of the heat-shrinkable film 2 is adjusted by the tapered portion of the container body 7. 9, the color density of the print layer 3c on the other side Lb is also reduced in advance in order to substantially correspond to the diameter reduction ratio of the heat-shrinkable label P2. Since the print layer 3 with low color density exists on both sides of c), even if the cutting position is slightly shifted, the print layer 3 after heat shrinkage has a local variation in shading, and the appearance is poor. Can be suitably prevented.

Further, in the continuous body of the heat-shrinkable label according to the present invention, the color density of the printing layer 3c in the predetermined area Lb on the other side from the cutting line P is determined by the container body 7
The thickness may be reduced in advance so as to substantially correspond to the diameter reduction rate of the constricted portion 8a formed in the middle of the body 8 or the bottom end 8b of the body 8. According to the heat-shrinkable label having such a configuration, the color density of the print layer 3c at the constricted portion 8a or the bottom end 8b of the body 8 after shrinkage can also be made uniform.

Further, in the heat-shrinkable label according to the present invention, the color density of the printing layer 3c in the predetermined area Lb on the other side from the cutting line P is reduced by shrinking the body 8 of the container body 7. It may be thinned in advance regardless of the diameter ratio. According to the heat-shrinkable label having such a configuration, the print layer 3c after the shrinkage cannot have a strictly uniform color density, but the shrinkage rate of the heat-shrinkable film 2 in the body 8 of the container body 7 is low. Since it is not so large, there is no large variation in shading, and the effect on the appearance is substantially negligible.

Further, the container according to the present invention comprises a container body 7 extending from the upper edge 9a of the tapered portion 9 to the bottom end 8b of the body 8.
A heat-shrinkable label 1 is fitted around the entire circumference of the container, and instead of coloring the container body 7 to a desired color, a print layer 3 is formed on the heat-shrinkable label 1 in a desired color;
Moreover, in order to make the color density of the printed layer 3 after shrinking uniform, the color density of the printed layer 3 is reduced in advance substantially corresponding to the diameter reduction rate of the container body 7. According to the container having such a configuration, the printing layer 3 in which the color density after contraction is made uniform is replaced with coloring of the container body 7.

[0017]

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

<First Embodiment> A heat-shrinkable label 1 according to a first embodiment has a print layer 3 formed on one side of a heat-shrinkable film 2 as shown in FIG. The heat-shrinkable film 2 is a known film made of polyester such as polyethylene terephthalate or the like, polyvinyl chloride, polystyrene, polypropylene, polyethylene or the like and having a thickness of about 15 to 80 μm, and has a predetermined shrinkage ratio in at least one direction. (E.g., 30-90% at 90C).

The heat-shrinkable label 1 is formed in a tubular shape such that both ends are joined by welding or an adhesive so that the printing layer 3 is on the inner side, and the shrinking direction is circumferential. Are folded flat so that the fold portions 2a, 2a are located at both ends.

As shown in FIG. 1 (b), the printing layer 3 has a first colored ink layer 4 on which a design, a trade name and the like are applied, and a heat-shrinkable layer formed on the first colored ink layer 4. The second colored ink layer 5 is formed on the entire surface of the film 2 or on a portion other than the first colored ink layer 4, and the first colored ink layer 4 has an arbitrary color such as blue or red. And the second colored ink layer 5
For example, a colored ink for ground color such as transparent green is applied. Hereinafter, the printing layer 3 refers to the second colored ink layer 5.

The printing layer 3 has a thickness of 0.1 to 10 μm (preferably 0.5 to 10 μm) by, for example, gravure printing.
３3 μm), but the fold portions 2a,
In the vicinity of 2a, the color density of the printing layer 3a becomes light, that is,
The coating is applied so that the thickness of the printing layer 3a is reduced. Moreover, the printed layer 3a near the fold portions 2a, 2a
The fold portions 2a are formed so as to gradually become thinner toward the fold portions 2a.

As shown in FIG. 2, the printing layer 3
The heat-shrinkable film 2 is formed up to both edges 2b and 2c (upper and lower edges of the heat-shrinkable label 1 in a state of being fitted to the container). No clear portion without layer 3 is provided.

In the predetermined region Lt on one end side of the heat-shrinkable film 2, the print layer 3b is applied so that the color density becomes low. Lb is also applied so that the color density of the print layer 3c is reduced. Moreover, the print layers 3b and 3c in the regions Lt and Lb are formed so as to gradually become thinner toward the edges 2b and 2c, and the both edges 2b and 2c.
The color densities of the print layer 3 are approximated or matched.

Accordingly, the color density distribution of the printing layer 3 is represented by the vertical axis representing the color density of the printing layer 3 and the horizontal axis representing the longitudinal direction of the heat-shrinkable film 2, as shown in FIG. Lt
The color density of the print layer 3d is constant (has no density gradient) in the predetermined area Lm sandwiched between the print area 3b and the predetermined area Lb. In the predetermined areas Lt and Lb, the color density of the print layers 3b and 3c is the density gradient. have. Moreover, the predetermined area Lb is different from the predetermined area Lt.
, The density gradient of the print layer 3c in the predetermined area Lb is steeper than the density gradient of the print layer 3b in the predetermined area Lt.

Further, as shown in FIG.
t is a transparent polyethylene terephthalate bottle (P
ET bottle), which corresponds to the tapered portion 9 whose cross-sectional diameter is sharply reduced from the body portion 8 of the container body 7, and the other predetermined region Lb extends inward from the lower end of the body portion 8 of the container body 7.
It is adapted to correspond to the bottom end 8b whose diameter is reduced.
The printing layer 3b in the predetermined region Lt has a density gradient substantially corresponding to the diameter reduction ratio of the tapered portion 9 of the container body 7.

The heat-shrinkable label according to the first embodiment is constituted as described above. Next, a state where the heat-shrinkable label is shrunk and externally fitted to the container will be described with reference to FIG.

As described above, the predetermined region Lt at one end of the heat-shrinkable film 2 is in close contact with the tapered portion 9 of the container body 7,
On the other hand, the predetermined region Lb on the other end side of the heat-shrinkable film 2 is
To be in close contact with the bottom end 8b of the body 8, the predetermined regions Lt, Lt
b, the shrinkage is larger than the predetermined area Lm, and the predetermined area Lt is closer to the edge 2b, and the predetermined area Lb is closer to the edge 2c. It can be shrunk with a large shrinkage.

On the other hand, since the body section 8 of the container body 7 has a substantially uniform cross-sectional diameter in each part in the up-down direction, the predetermined region Lm that is in close contact with the body section 8 is in any part in the up-down direction. , With a substantially uniform amount of contraction.

That is, the heat-shrinkable label according to the first embodiment forms the print layer 3d in the predetermined area Lm which shrinks with a uniform shrinkage amount at a substantially uniform color density, and at the same time, shrinks at both ends. As for the printing layers 3b and 3c in the predetermined areas Lt and Lb where the amount changes, the color density is changed according to the shrinkage amount of the heat-shrinkable film 2 (the shrinkage amount of the container main body 7) at that location. The print layer 3 after the shrinkage of the shrinkable film 2 does not vary in density.

As described above, the printing layer 3 can be formed by printing, typically by gravure printing. As a method of changing the density of the color density, as shown in FIG. 4, the gravure plate 12 (shown in FIG. 4A) in which the depth of the recess 13 is gradually increased (shallowed), and the bank length L of the recess 13 is gradually increased (see FIG. 4). Gravure version 12)
(Shown in (b)), a gravure plate 12 (shown in (c)) in which the arrangement density of the recesses 13 is gradually increased (rough), a gravure plate 12 (shown in (d)) in which the size of the recesses 13 is gradually increased (small), or A method of performing gravure printing using a gravure plate or the like in which these are appropriately combined is exemplified.

As described above, according to the heat-shrinkable label according to the first embodiment, the color density of the printing layer 3 b on one side Lt of the both end regions of the heat-shrinkable film 2 is adjusted by the tapered portion of the container body 7. Since the printing layer 3 is thinned in advance so as to substantially correspond to the diameter reduction ratio of 9, it is possible to preferably prevent the print layer 3 after the heat shrinkage from being locally uneven in shading and the appearance from being deteriorated. The printing layer 3c on the other side Lb
Does not completely correspond to the diameter reduction rate of the bottom end portion 8b of the body portion 8 of the container body 7, but the bottom end portion 8b of the body portion 8 Since it is a hard-to-see portion as compared with, the influence on the appearance is substantially negligible.

It is known that the flat heat-shrinkable label has a larger heat-shrinkage amount at the fold portions 2a than at other portions. According to the heat-shrinkable label, since the color density of the printed layer 3a at the fold portions 2a, 2a is made thinner than at other portions, the print layer 3a at the fold portions 2a, 2a is reduced.
Also, there is an advantage that it is possible to preferably prevent a variation in color density (color unevenness) after heat shrinkage from occurring between the print layer 3 and the print layer 3 in a part other than a, thereby deteriorating the appearance. .

In such a case, if the print layer 3a at the fold portions 2a, 2a is also provided with a change in color density at a portion corresponding to the predetermined regions Lt, Lb, the print layer at the fold portions 2a, 2a after the heat shrinkage is obtained. The color density of 3a is also made uniform.

The color density corresponding to the diameter reduction ratio of the container body 7 is, for example, in the case of transparent green by gravure printing,
The density of the part with a shrinkage of 50% is reduced to 50 to
It may be about 70%.

<Second Embodiment> As described above, a tubular heat-shrinkable label is formed into a tube shape by joining both ends of a base material having a print layer 3 formed on the inner surface side of a heat-shrinkable film 2. After that, wind it up in a roll shape in a flat folded state,
It is cut into a predetermined length while being sequentially fed out by an automatic mounting device or the like.
Is fitted to the outside.

Therefore, the heat-shrinkable label is usually handled as a continuous body. In the present embodiment, a continuous body of such a heat-shrinkable label is provided with a plurality of scheduled cutting lines at intervals in the longitudinal direction of the long heat-shrinkable film 2, and the printing layer 3 is attached to the heat-shrinkable film 2. Of the printing layer 3 in a predetermined region on one side from the planned cutting line, and the color density of the printing layer 3 in a predetermined region on the other side from the planned cutting line is reduced in advance. The color density is also reduced in advance.

With respect to the heat-shrinkable label according to the present embodiment, the color density distribution of the print layer 3 is represented by setting the vertical axis to the color density of the print layer 3 and the horizontal axis to the longitudinal direction of the heat-shrinkable film 2.
It is represented in FIG. In the figure, a broken line P crossing the heat-shrinkable film 2 in the width direction is a cut line of the heat-shrinkable label, and the cut along the cut line P is the same as the heat-shrinkable label in the first embodiment. Will be the same. Note that the color density of the printing layer 3 at the planned cutting line P is the lightest, which is equivalent to about 30 to 60% of the darkest part of the printing layer 3. I have.

Accordingly, the printing layer 3b in the predetermined region Lt on one side from the planned cutting line P corresponds to the tapered portion 9 of the container body 7, and the printing layer 3c in the predetermined region Lb on the other side from the cutting line P is used as the container body. 7 corresponds to the bottom end 8 b of the body 8, and the printed layer 3 d in the region Lm sandwiched between the predetermined regions Lt and Lb corresponds to the body 8 of the container body 7.

As described above, according to the second embodiment, since a region having a low color density exists on both sides of the planned cutting line P, the cutting position is slightly shifted, for example, the one-dot chain line L1 or the two-dot chain line L2. , The color density of the print layer 3 at the upper end edge of the shrinkable heat-shrinkable label does not become very dark, and the problem that the appearance is deteriorated cannot occur.

The printing layer 3 is continuous with the planned cutting line P interposed therebetween, and since there is no clear portion without the printing layer 3 on both sides of the planned cutting line P, the appearance is further improved. be able to.

Further, since the printing layer 3 is formed up to both end edges 2b and 2c of the heat-shrinkable film 2, the inner surfaces of the film do not directly adhere to each other, so that a conventional clear portion is provided. Easy opening can be obtained as compared with the heat shrink label, and it can correspond to a high speed labeler.

<Third Embodiment> By the way, in recent years, PET
The idea of recycling synthetic resin containers such as bottles has become established. However, in order to obtain high-quality recycled materials, for example, PET colored green or the like is used.
Since the bottles need to be separated from the colorless and transparent PET bottles, and processing costs are high, recycling has not progressed easily.

Therefore, in the present embodiment, the container body is not colored, and the desired coloring is substituted by the printed layer of the heat-shrinkable label. For example, in the past, a PET bottle for putting green tea was colored green from the viewpoint of adding value to the product, but this time, the container body of the PET bottle itself was not colored, Instead, a green transparent colored ink is used for the print layer 3 of the heat shrinkable label in the first embodiment.

The heat-shrinkable label is formed on the upper edge 9a of the tapered portion 9.
To the bottom end portion 8b of the body portion 8, and the outer peripheral surface of the body portion 7 is fitted around the tapered portion 9 of the container body 7 and the bottom end portion 8b of the body portion 8 in the printed layer 3. In part,
The color density of the print layer 3 is changed according to the amount of shrinkage of the heat-shrinkable film 2 in this portion.

According to this method, the color density of the print layer 3 after heat shrinkage is made uniform, and it is as if the container body is colored without deteriorating the appearance, and is equivalent to the conventional container. Will be obtained.

<Other Embodiments> The present invention is not limited to any of the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

Accordingly, the containers are not limited to PET bottles, but include glass bottles and other known synthetic resin containers. In addition, the container does not need to have a circular cross section, but also includes a container having a square cross section and a round corner.

The heat-shrinkable label is placed on the mouth 1 of the container body 7.
By externally fitting around the entire peripheral surface excluding 0 (opaque portion), for example, as shown in the third embodiment, the container body 7 itself can be seen as if it were colored.
The container body 7 is not limited to this, as shown in FIG.
6 is attached from the tapered portion 9 to the constricted portion 8a formed in the middle of the body portion 8, as shown in FIG. 6B, the lower edge of the mouth portion 10 of the container body 7 (the tapered portion 9). 6 is externally fitted from the middle of the tapered portion 9 to the bottom end 8b of the body 8 at a distance from the upper edge 9a), and from the tapered portion 9 to the middle of the body 8 as shown in FIG. The outer fitting may be used.

According to the example shown in FIG. 6A, the predetermined region Lb on the other end side of the heat-shrinkable film 2 comes into close contact with the constricted portion 8a. In such a case, the color density of the print layer 3c in the predetermined area Lb may be reduced in accordance with the contraction rate of the heat-shrinkable film 2 in the constricted portion 8a, or the print layer 3c in the predetermined area Lb may be thinned. May be reduced regardless of the shrinkage ratio of the heat-shrinkable film 2 in the constricted portion 8a.

The reason why it is not necessary to make the color density of the print layer 3c in the predetermined area Lb correspond to the shrinkage ratio of the heat-shrinkable film 2 in the constricted portion 8a is as follows.
The reason is that, since the diameter reduction ratio is sufficiently smaller than that of the tapered portion 9, the printed layer 3c after contraction cannot have an extremely uneven shading. Incidentally, this is not only the constricted portion 8a, but also the bottom end 8b of the body 8 as shown in FIG.
This is also true of In addition, in the case of the bottom end portion 8b, the print layer 3c in the predetermined region Lb is located at a position that is inconspicuous as the above reason.

In the example shown in FIG. 6C, the predetermined region Lb on the other end of the heat-shrinkable film 2 is not caught by the constricted portion 8a or the bottom edge 8b. In such cases,
Although the print layer 3c in the portion after the heat shrink has a lower color density than the print layer 3d in other portions corresponding to the body portion 8, the shrinkage amount of the heat-shrinkable film in the body portion 8 is relatively small. No large shading occurs, and the appearance is not deteriorated.

Further, the printing pattern of the printing layer 3 in the vicinity of the planned cutting line P set on the continuum of the heat-shrinkable label is not limited to the above embodiment (FIG. 5).
As shown in (a), the predetermined region Lb at the other end of the heat-shrinkable film 2 has no concentration gradient, the predetermined region Lt at one end of the heat-shrinkable film 2 and the predetermined region Lb at the other end.
It is also conceivable that the density gradients intersect at an acute angle. In short,
If a region having a low color density is provided on both sides of the planned cutting line P, problems caused by misalignment of the cutting position can be solved, and the present invention is intended.

Further, the ink used for the printing layer is not limited to the transparent colored ink, and opaque colored ink, white ink, and other known inks can be used. Further, the present invention is not limited only to the layer structure of the printing layer 3 as in the first embodiment.

The printing layer 3 is not limited to the one formed on the entire surface of the heat-shrinkable film 2 as described above. For example, as shown in FIG. Side predetermined region Lt (tapered portion 9 of container body 7)
) And the predetermined region Lb on the other end side (corresponding to the bottom end 8b of the body 8 of the container body 7). The predetermined region Lm (the body 8 of the container body 7) sandwiched between the predetermined region Lt and the predetermined region Lb.
The second printing layer 14 is composed of a colored ink layer 15 on which a design, a product name, and the like are applied, and an opaque white ink layer 16 coated with white ink from above the colored ink layer 16. Has formed. Even in such a case, it is preferable to change the color density of the print layer 3 as shown in FIG. 8A so as not to cause unevenness (color unevenness) of the print layer 3 after shrinkage.

[0055]

As described above, the continuum of the heat-shrinkable label and the heat-shrinkable label according to the present invention are characterized in that the color density of the printing layer on one side of the both end regions of the heat-shrinkable film is determined by the tapered portion of the container body. And the color density of the print layer on the other side is also made thinner in advance so as to substantially correspond to the diameter reduction ratio of the heat-shrinkable label. Since the thin region is provided, it is possible to preferably prevent the print layer after the heat shrinkage from having local unevenness in shading and deteriorating the appearance, regardless of a slight shift in the cutting position. it can.

Further, in the container according to the present invention, the heat shrinkable label is externally fitted on the entire peripheral surface of the container main body, and instead of coloring the container main body to a desired color, the heat shrinkable label is provided over the entire surface of the heat shrinkable label. Since the printing layer is formed and measures are taken to equalize the color density of the printing layer after shrinking, the printing layer gives a sense of unity of color and can enhance the commercial value. There is no need to color itself, and the container can be easily and reliably recycled.

[Brief description of the drawings]

FIG. 1 is a heat-shrinkable label showing one embodiment of the present invention, wherein (A) is a cross-sectional view, and (B) is an enlarged cross-sectional view of a main part.

FIG. 2 is a longitudinal sectional view of the heat-shrinkable label of the embodiment.

FIG. 3A is a color density distribution diagram of a printing layer, and FIG.
The half side view of the container main body corresponding to (a).

FIGS. 4A and 4B show a gravure plate of the same embodiment, wherein FIG. 4A is a side view of a recess whose depth changes, FIG. 4B is a plan view of a recess whose spacing changes, and FIG. FIG. 4D is a plan view of the case where the density changes, and FIG.

FIG. 5 is a color density distribution diagram of a printing layer in the continuum of the heat-shrinkable label of the embodiment.

FIGS. 6A to 6C are side views of a container main body showing an externally fitted state of a heat-shrinkable label according to another embodiment.

FIGS. 7A and 7B are color density distribution diagrams of a printing layer in a continuum of a heat-shrinkable label according to another embodiment.

FIG. 8A is a color density distribution diagram of a printed layer of a heat-shrinkable label according to another embodiment, and FIG. 8B is a longitudinal sectional view of the heat-shrinkable label corresponding to FIG.

9A is a distribution diagram of a form of forming a concave portion of the gravure plate, and FIG. 9B is a half side view of the container body corresponding to FIG.

FIG. 10A is a diagram showing a color density distribution of a printing layer in a continuum of a heat-shrinkable label according to a first conventional example, and FIG.
FIG. 8 is a color density distribution diagram of a printing layer in a continuum of a heat shrinkable label according to a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Heat-shrinkable label 2 ... Heat-shrinkable film 2b, 2c ... Edge 3 ... Printing layer 7 ... Container main body 8 ... Body 9 ... Tapered part 12 ... Gravure plate 13 ... Concave part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takuji Kaya 3-11-11 Nihonbashi Honcho, Chuo-ku, Tokyo Inside Fuji Seal Co., Ltd. (72) Inventor Yoshinao Sakaguchi 3-11-11 Nihonbashi Honcho, Chuo-ku, Tokyo No. F term in Fuji Seal Co., Ltd. (reference) 3E075 AA12 BA83 CA04 DB12 DE09 DE23 GA05

Claims (6)

[Claims] 1. A long heat-shrinkable film (2) is provided with a printing layer (3), and the cut lines (P,...) Set at intervals in the longitudinal direction of the heat-shrinkable film (2). ), The printed layer (3) of the continuum of the heat-shrinkable label which is fitted over the body (8) and the tapered portion (9) of the container body (7). Is formed continuously in the longitudinal direction of the heat-shrinkable film (2), and the color density of the printing layer (3b) in a predetermined area (Lt) on one side from the planned cutting line (P) is measured. ) Taper (9)
And the color density of the print layer (3c) in a predetermined area (Lb) on the other side from the planned cutting line (P) is also reduced in advance in advance. Continuum of heat shrink label. 2. The color density of the print layer (3c) in a predetermined area (Lb) on the other side from the planned cutting line (P) is formed in the middle of the body (8) of the container body (7). The continuum of the heat-shrinkable label according to claim 1, wherein the heat-shrinkable label is thinned in advance so as to substantially correspond to the diameter reduction rate of the constricted portion (8a) or the bottom end portion (8b) of the body portion (8). 3. The color density of the printing layer (3c) in a predetermined area (Lb) on the other side from the planned cutting line (P), regardless of the diameter reduction ratio of the body (8) of the container body (7). The continuum of the heat-shrinkable label according to claim 1, which is thinned in advance. 4. A printing layer (3) on a heat-shrinkable film (2).
And a body (8) and a tapered portion (9) of the container body (7).
A heat-shrinkable label that is externally fitted over the heat-shrinkable film (2).
c), and the color density of the printing layer (3b) in a predetermined area (Lt) on one end side of the heat-shrinkable film (2) is reduced by reducing the diameter of the tapered portion (9) of the container body (7). The thickness of the print layer (3) in a predetermined area (Lb) on the other end side of the heat-shrinkable film (2) is reduced in advance so as to substantially correspond to the ratio.
A heat-shrinkable label, wherein the color density of c) is also reduced in advance. 5. The heat-shrinkable label according to claim 4, wherein the color densities of the printing layers at both end edges of the heat-shrinkable film are made close to each other. 6. A heat-shrinkable label (1) is externally fitted on the entire peripheral surface of the container body (7) from the upper edge (9a) of the tapered portion (9) to the bottom end (8b) of the body (8). A printing layer (3) is formed on the heat-shrinkable label (1) in a desired color instead of coloring the container body (7) to a desired color, and the printing layer after shrinking is formed. The container according to (3), wherein the color density of the print layer (3) is reduced in advance so as to substantially correspond to the diameter reduction rate of the container body (7) in order to make the color density uniform.