JPH07187147A - Method and apparatus for shrinking shrinkable label of container - Google Patents

Abstract

PURPOSE:To neatly attach a label and effectively prevent deflection of a printed part to improve an attached state by eliminating irregularity and failure in shrinkage with heating conditions of the label applied to a container set according to the label. CONSTITUTION:In a shrinkable label shrinking apparatus for a container including a heating means 36 for heating and shrinking a cylindrical label 13 put over a container 11 and having heat-shrinkability, a shield 15 for covering a predetermined part of the label 13 is movable between a position to approach the label 13 for preventing the label 13 from heat-shrinking and a separate position where the predetermined part of the label 13 can be shrunk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shrink label shrinking method for a container and a device for shrinking a heat-shrinkable label fitted in the container by heat shrinking.

[0002]

2. Description of the Related Art Conventionally, a container is generally provided with a tubular heat-shrinkable label. As a means for attaching this label, a tubular label 60 is used as shown in FIG. After being fitted into the container 61, it is heated and shrunk by a shrink device (not shown).

[0003]

However, since the shrink device is configured to heat and shrink the entire label 60 under the same temperature, heating amount, and the like conditions, the container 61 has a rectangular cross-section. A part of the flat side surface 62 of the container 61 tends to contract in the entire length direction more easily than the corner portion 63 of the container 61. Therefore, as shown in FIG. 10 (B), the side surface 62 of the container 61 in the label 60 is excessively shrunk, so that it is not possible to finish it neatly. Moreover, label 60
The design and the printing of the bar code and the like are provided so as to be located substantially in the center of the side surface 62 of the container 61, but there is also a drawback that the printing is distorted due to poor shrinkage of the label 60.

When the label 60 is a flat long film cut into a predetermined length, folds are formed at both ends of the label 60 when the label 60 is opened. Therefore, in the shrink label device, both folds cannot be heated sufficiently, which may cause shrinkage failure.

The present invention has been made in view of the above conventional problems, and the heating condition of the label fitted to the container is set according to the label to eliminate uneven shrinkage and defective shrinkage, and the label is attached. An object of the present invention is to be able to cleanly mount, effectively prevent distortion of a printed portion, and improve a mounted state.

[0006]

The present invention has been made as a shrink label shrinking method for a container and a device therefor in order to solve the above problems. The feature of the shrink label shrinking device for a container is that the container 11 is covered. In a shrink label shrinking device for a container provided with a heating means (36) for heat-shrinking the fitted tubular label (13) having heat shrinkability, a predetermined portion of the label (13) is covered when the label (13) is heated by the heating means (36). The shield 15 is movably provided at a position approaching the label 13 to prevent heat shrinkage of the label 13 and at a position where a predetermined portion of the label 13 is separated so as to be heat shrinkable. .

Further, in a shrink label shrinking device for a container provided with a heating means 36 for heating and shrinking the heat-shrinkable cylindrical label 13 fitted in the container 11, the label 13 is inserted into the heating means 36. An opening 41a is formed,
Further, the heating means 36 is provided so as to be movable in the entire length direction of the label 13, and a heating medium supply hole 41 is provided in a predetermined portion of the inner peripheral surface of the opening portion 41a in order to increase the heating amount as compared with other portions. There are also many formed.

Moreover, the feature of the shrink label shrinking method of the container is that when the heat-shrinkable tubular label 13 fitted in the container 11 is heated and shrunk by the heating means 36, a predetermined portion of the label 13 is removed. Covering with the shield 15, the shield 15
The exposed part that has no
The purpose is to separate 15 from the label 13 and heat-shrink the label 13 including the unshrinked portion.

[0009]

In the present invention described above, first, the shield 15 covers a predetermined portion of the label 13 which is fitted on the container 11 and which is printed. When the label 13 is heated by the heating means 36 in this state, since the shield 15 covers a predetermined portion of the label 13, that portion is not heated and only the other portion is heated to start contraction.

Further, when the shield 15 is separated from the label 13, the corresponding portion of the shield 15 in the label 13 can be heated, the entire label 13 including this portion is heated, and the label 13 is heated. By changing the conditions, it is possible to shrink the print without distortion.

Further, the heating means 36 is formed with an opening portion 41a through which the label 13 is inserted, and the heating means 36 is movably provided in the entire length direction of the label 13 and has a predetermined inner peripheral surface of the opening portion 41a. Since the heating medium supply holes 41 for increasing the heating amount are formed in the portion of more than in the other portions, the heating means 36 is moved to move the predetermined portion of the label 13 to another portion. It is possible to heat the label 13 with a larger amount of heat than that of the portion, and it is possible to satisfactorily shrink the outer appearance of the label 13 at the same time as the other portions.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of a shrink device 1 of the present invention, in which a label mounting device 2 is attached to an index table 3 which is rotatable and can be stopped at a predetermined rotation angle, at equal intervals. Has been. Each label mounting device 2 has a cylindrical holder 4 fixed to the index table 3, and a vertical axis 7 is rotatably supported by a bearing 6 on each holder 4, and a vertical end 7 is provided at the lower end of the vertical axis 7. Is provided with a pulley 10 around which a belt 12 is wound.

Reference numeral 9 denotes a container base 9 fastened and fixed to the upper part of the vertical axis 7 via a nut 8. The container base 9 has a rectangular shape in a plan view and is tapered upward (small diameter shape). There is. 11
Is a container that is fitted onto the container base 9 and has a shape similar to that of the container base 9. The container 11 is automatically or manually operated at the container mounting position B shown in FIG. Stand 9
It is designed to be fitted on.

Reference numeral 13 denotes a label fitted to the container 11, which is formed by forming a synthetic resin film made of a heat-shrinkable film such as polyester into a tubular shape and then winding it into a roll, and then feeding it out in a predetermined manner. It is cut into a length, and is opened by an opening device (not shown) and externally fitted to the container 11 at the label mounting position C on the downstream side of the container mounting position B as shown in FIG.

Reference numeral 15 denotes a plurality of plate-shaped shields for covering a predetermined portion of the label 13 located on the side surfaces 11a of the respective planes of the container 11, and the shields 15 face the respective side surfaces 11a of the container 11. In addition, the upper end of the swing arm 18 is pivotally supported via a pin 14. In addition, the width of the shield 15 is set to be slightly smaller than the width of the container 11, and has a length substantially the same as the entire length of the container 11. Each swing arm 18 is formed by bending a metal plate, and is provided below the container base 9 so as to swing about a pivot shaft 19. An engaging piece 21 projects inward from the lower end of the swing arm 18, and an elevating plate 23 located below the engaging piece 21 is provided so as to be able to ascend and descend while being fitted onto the holding body 4. There is.

At one end of the elevating plate 23, a slide body 26 slidable in the vertical direction is attached to a slide base 25 attached to the lower surface of the index table 3. A cam follower 31 that rolls along an annular cam 30 fixed to a machine base 28 is provided at the lower end of the sliding body 26. Therefore, the cam follower 31 rolls on the annular cam 30 as the index table 3 rotates, and pushes up the elevating plate 23 when the sliding body 26 slides upward. This lift plate
By pushing up 23, the swing arm 18 swings about the pivot shaft 19 as a fulcrum, and the shield 15 is expanded to a position separated from the label 13.

Reference numeral 32 denotes a spring which is fitted onto the pivot shaft 19 and is interposed between the container base 9 and the swing arm 18. The spring 32 causes the swing arm 18 to have a blocking plate 23 and a label 13.
Is urged to swing to a position where it is pressed against the container 11, and the slide body 26 is urged downward via the elevating plate 23. In FIG. 1, the right side of the center line L of the label mounting device 2 shows the position where the shield 15 is separated from the label 13, and the left side is where the shield 15 approaches (contacts) the label 13.
The position is shown.

Reference numeral 36 denotes an arc-shaped heater which is provided along the outside of the index table 3 and which blows out hot air as a heating medium. The label mounting position C and the label 13 heat-shrinked by the heater 36 are mounted. The container 11 is provided so as to extend from the take-out position D for taking out the container 11. The heater 36 heats the lower portion 13a of the label 13 in the first half and heats the entire label 13 in the second half. Reference numeral 35 denotes a shield for covering the lower portion of the label 13 (the mouth 11b of the container 11) that has been heated and shrunk by the heater 36, and is provided between the heater 36 and the label mounting device 2.

Reference numeral 37 denotes a protrusion for positioning the container base 9 at a predetermined rotation position as shown in FIG. 1, which is provided on the lower surface of the pulley 10. The protrusion 37 has the container mounting position B and the label mounting position. The container bases 9 can be stopped at the same rotational position by being guided by the positioning cams 38 provided at C and the take-out position D.

The first embodiment of the present invention has the above-described structure. Next, a case where the label 13 is attached to the container 11 using the apparatus having the above-mentioned structure will be described. First, when the container table 9 revolves from the standby position A in which the shield 15 is in the expanded state to the container mounting position B by the rotation of the index table 3, the projection 37 provided on the pulley 10 of the container table 9 is positioned. Since it is guided by the cam 38, the container base 9 stops at a predetermined rotation position.

When the container 11 is fitted onto the container base 9, the container base 9 and the like revolve to the label mounting position C. At the label mounting position C, the label 13 is fitted on the container 11 and the heater
While moving to the 36 side, at this time, the container base 9 rotates with the container 11 (see FIG. 4A). It should be noted that the lower part of the inner surface of the label 13 is preliminarily coated with a heat-sensitive adhesive such as a delayed tack adhesive that does not have adhesiveness at room temperature, but that becomes sticky due to heating and lasts for a considerable time after cooling. ing.

When the container 8 passes the label mounting position C,
Each shield 15 is closed and the label 13 is pressed against the side surface 11a of the container 11 to cover a predetermined portion of the label 13 and a heater.
First, 36 heats only the entire circumference of the lower part 13a of the label 13 which rotates with the container 11. Since the lower part of the label 13 contracts with the delayed tack adhesive activated, the label 13 can be fixed to the container 11 without shifting upward (see FIG. 4B). Further, when the container 8 reaches the position of the shield 35, the shield 35 covers the contracted lower portion 13a of the label 13.

The container 11 revolves around the index table 3 while rotating, and hot air is sent toward the entire label 13 by the heater 36. Since both shields 15 and 35 block this hot air, the label 13 is exposed. A portion, that is, a portion corresponding to a corner of the container 11 is thermally shrunk (FIG. 5A).

Further, when the container 11 revolves, it passes through the shield 35 covering the lower part of the label 13 and the cam follower.
By the cam mechanism of 31 and the annular cam 30, the swing arm 18 swings and the shield 15 expands. At this time, the shield 15 and the label 13
A space is generated between the label 13 and the non-shrinkable portion of the label 13 through the space, and the entire label 13 is heat-shrinked,
The upper end portion 13b of the label 13 can be bent along the periphery of the bottom portion 11c of the container 11 to be contracted, and partial excessive contraction of the label can be prevented to improve the mounting condition (Fig. 5 (b)).
reference). The hot air is preferably applied in a weak state so that the unshrinked portion of the label 13 can be uniformly heated.

The container 11 is positioned at the take-out position D, and the container 11 having the label 13 attached thereto can be taken out. In the above, the label 13 is contracted while the lower portion of the label 13 is covered with the shield 35, but the heating amount and position of the heater 36 may be controlled without providing the shield 35, or It is also possible to provide an annular shield 35 that covers the entire circumference of the label 13 as shown in FIG.

FIG. 6 shows a second embodiment of the present invention. In this embodiment, each container base 9 is linearly transferred. As in the first embodiment, the container base 9 is transferred in the direction of the arrow shown in the figure, and the standby position A, the container mounting position B, the label mounting position C, and the take-out position D are sequentially provided linearly. As the heater 36, a pair of left and right linear heaters are arranged.

FIGS. 7 and 8 show a third embodiment of the present invention. In the first embodiment, the heat quantity to the label 13 is adjusted by blocking the hot air with the shields 15 and 35. However, in the present embodiment, the rectangular annular heater 36 through which the container 11 and the label 13 are inserted is provided.

An opening 41a formed in the annular heater 36
A large number of hot air supply holes 41 as heat supply means are formed on the inner surface of the heater 36. The warm air supply holes 41 are formed in large numbers in the four corners of the heater 36 and at the center of the plane. For example, about 1/5 of the hot air supply holes 41 are formed in the portion.

Therefore, the annular heater 36 is put on the label 13 whose lower portion is previously heat-shrinked as described above (see FIG. 8).
(See (a)), and move from the bottom to the top (see FIG. 8).
(See (b)). The heater 36 contracts the label 13 during movement, but the amount of hot air blown out from the warm air supply holes 41 is large at the corners of the label 13 and relatively small at the central part that does not want to be contracted. A uniform contracted state can be obtained.

FIG. 9 shows a fourth embodiment of the present invention, which is a container 11
An example is shown in which the label is a cylinder, and the folds 45 are formed at both ends of the label 13. The pair of expandable and contractible shields 15 can cover the portion of the label 13 other than the crease 45 when closed.

Therefore, first, as shown in FIG. 9A, the label 13 is fitted on the container 11 with the shield 15 open.
At this time, both folding creases 45 are provided at positions not covered by the shields 15. Next, in a state where both shields 15 are closed and the label 13 is rotated, the exposed portion of the label 13 is heat-shrinked by the heater 36, the shield 15 is expanded, and the entire label 13 is heated. When contracted, the crease 45 has already been contracted by heating, so that the entire label 13 can be attached in close contact with the container 11.

The present invention is not limited to the above-mentioned embodiments. For example, in the above-mentioned embodiments, the container 11 has a rectangular shape or a cylindrical shape, but the shape of the container 11 is triangular or Other polygons may be used.

The heater may be one that emits infrared rays in addition to the hot air system, and the heater that heats the lower portion of the label 13 may be a separate body from the heater 36. The configuration of can also be arbitrarily changed in design.

[0034]

As described above, in the shrink label shrinking device for a container according to the present invention, the shield covering a predetermined portion of the label approaches the label to prevent the label from shrinking when the label is heated by the heating means. Since the label 13 and the predetermined portion of the label are movably provided so as to be separated so as to be heat-shrinkable, the heating amount of the label 13 can be controlled according to each portion. As a result, particularly when the shape of the container is rectangular, it is possible to prevent the predetermined portion of the label 13 located on the flat side surface portion of the container from being excessively contracted as compared with the portion located at the corner. In addition, when the label has a crease, it is possible to surely contract the part of the crease that is difficult to contract, eliminating uneven contraction and contraction of the label, and distorting the printed part of the label. This has the advantage that the contracted state is beautiful and the mounted state can be improved.

Further, the heating means is formed with an opening through which the label is inserted, and the heating means is provided so as to be movable in the entire length direction of the label, and a heating amount is provided on a predetermined portion of the peripheral surface of the opening. In order to increase the amount of heat, the heat supply means is formed in a larger amount than other parts, so that the part of the label that is difficult to shrink is compared to other parts, and the amount of heat is increased to simultaneously shrink heat to a uniform state. The heat shrinkage can be performed quickly.

Moreover, the container base on which the container is fitted is rotatably provided, the container is formed in a small diameter toward the bottom thereof, and the heating means is the mouth part of the container in the label which rotates. If the part is preheated, even if the container has a small diameter toward the bottom, the label will not be displaced to the bottom side when contracted, and it can be securely attached at a predetermined position. It becomes possible.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

2A is a sectional plan view taken along the line XX of FIG. 1, and FIG. 2B is a sectional plan view taken along the line YY of FIG.

FIG. 3 is an overall plan view showing a first embodiment of the present invention.

4A and 4B are perspective views showing a shrink state of the present invention.

5A and 5B are perspective views showing a shrink state of the present invention.

FIG. 6 is an overall plan view showing a second embodiment of the present invention.

FIG. 7 is a perspective view of a heating means showing a third embodiment of the present invention.

8A and 8B are perspective views showing a shrink state of the present invention.

FIG. 9 is a plan view showing a fourth embodiment of the present invention, in which (a) to (c) respectively show a shrink state.

10A and 10B are perspective views showing a conventional example.

[Explanation of symbols]

9 ... Container base, 11 ... Container, 13 ... Label, 15 ... Shield, 36,
40 ... Heating means, 41a ... Opening part, 41 ... Warm air supply hole (heat supply means)

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Keikin 5-3-18 Imazukita, Tsurumi-ku, Osaka City Fuji Seal Industry Co., Ltd.

Claims (4)

[Claims] 1. A heating means (36) for heating and shrinking a heat-shrinkable tubular label (13) fitted in a container (11).
In the shrink label shrinking device for a container provided with, when the label (13) is heated by the heating means (36), the shield (15) covering a predetermined portion of the label (13) shrinks the label (13) by heat. Shrink label for a container, which is movably provided at a position approaching the label (13) to prevent the above-mentioned problem, and at a position where a predetermined portion of the label (13) is separated so as to be heat-shrinkable. Shrink device. 2. A container stand (9) on which the container (11) is fitted is provided so as to be rotatable, and the container (11) is formed in a small diameter toward the bottom (11c) thereof, and further, The shrink label shrinking device for a container according to claim 1, wherein the heating means (36) is preliminarily provided to be able to heat the mouth portion of the container (11) in the label (13) that rotates. 3. Heating means (36) for heating and shrinking a heat-shrinkable tubular label (13) fitted in a container (11).
In a shrink label shrinking apparatus for a container provided with, a heating means (36) is formed with an opening (41a) through which the label (13) is inserted, and the heating means (36) is arranged in the entire length direction of the label (13). And a heat supply means (41) is formed in a predetermined portion of the inner peripheral surface of the opening (41a) so as to increase the amount of heating than in other portions. A shrink label shrinking device for containers. 4. When a tubular label (13) having heat shrinkability fitted in a container (11) is heated and shrunk by a heating means (36), a predetermined portion of the label (13) is shielded ( 15) to cover the exposed part without the shield (15) with heat in advance, and further to separate the shield (15) from the label (13) so that the label (13) including the uncontracted part is removed. A shrink label shrinking method for a container, comprising shrinking by heating.