JPH01213190A - Label removing equipment for packaging bottle - Google Patents

Abstract

PURPOSE:To automate label removing work, by providing a bottle immersion tank, in which a solvent or solvent vapor with a high temperature is stored, and a mechanical removing device. CONSTITUTION:A bottle 1 is secured by a chuck head 51 on a bottle transferring device and led into a solvent tank 10 from an opening/closing door 10a. The bottle is left to stand in the tank for 1-2min. The inside of the solvent tank 10 is kept under a high temperature of 74-92 deg.C, and the solvent vapor which has filled the tank quickly immerses between a label 4 and a packaging body 3 and decreases the bonding force of an adhesive. Further, the bottle 1 is taken out from this solvent tank 10 and transferred to a label removing part 20. The bottle 1 is fixed by making the bottom come into contact with a base 21, and at the same time, pressing the bottle with a pressing plate 52a from the top. A spatula for label removing 22 is made to come into contact with the bottle 1, and a rotary supporting member 23 is made to turn. By doing this, the labels 4, each differing in types of adhesive and attaching positions can be automatically and assuredly removed, while the packaging body of the bottle 1 is not damaged.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention is a method for peeling off a label attached to a package such as a cola drink bottle from a bottle wrapped in a package such as a shrink wrap. It relates to a device for.

[Prior Art 1 Beverage bottles used to hold sparkling beverages such as cola drinks are made of a synthetic resin film on the surface of the glass bottle body to prevent them from bursting. Shrink wrapping is now used. Bottles that have been shrink-wrapped in this way are also collected and reused after being used several times. Therefore, when reusing it, it goes without saying that it is necessary to clean it, and if there is a label such as a barcode label attached to the surface, it must be removed. Must be.

Since this label is attached to a package such as the above-mentioned shrink wrap, its adhesive strength is strong, and it cannot be peeled off by immersing it in hot water or a solvent. Moreover, barcode labels are affixed by the seller, and there are many different types of label materials and adhesives, as well as different affixing positions. Additionally, in addition to this barcode label, there may also be a label affixed to the bottle to identify the company collecting the bottle. For this reason, it is extremely difficult to automate such label peeling work, and conventionally labels have been peeled off manually. This label peeling process is usually done by applying a solvent to the bottle using a spatula, etc., peeling off the label using a label peeling tool such as a metal spatula, and then applying the solvent again to remove the remaining adhesive on the package. This is done by rinsing off the agent, washing with water, and drying.

[Problem to be solved by the invention] However, as mentioned above, when labels are removed manually, the work environment is extremely poor because the work is done in the presence of a solvent. In addition to this problem, there is also the problem that the package may be damaged by the flange or peeling tool when applying the solvent or peeling off the label.

The present invention has been made in view of the above points, and an object of the present invention is to provide a device that can automate the work of peeling off a label stuck to a bottle covered with a package. Its purpose is to

[Means for Solving the Problems 1] In order to achieve the above-mentioned object, the present invention provides a shrink coating method in which a high-temperature solvent solution or solvent vapor is stored and the bottle is immersed to cover the surface of the bottle. The present invention is characterized in that it is configured to include a solvent bath for reducing the adhesive strength of a label stuck to a package such as a package, and a label peeling means for mechanically peeling off the label. .

[Effect 1] As mentioned above, by bringing the bottle into contact with a hot solvent, the adhesive strength of the label attached to the bottle can be quickly reduced. Therefore, the label whose adhesive strength has decreased in this way can be easily peeled off by using a label peeling means.

As this label peeling means, mechanical means such as a peeling spatula or a strong adhesive tape can be used, and the structure of this label peeling means can be simplified. When a peeling spatula is used, the label can be peeled off without damaging the package by elastically supporting the spatula.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, as shown in FIG. 1, the bottle 1 is made by covering a glass bottle body 2 with a shrink package 3 that is formed by shrinking a synthetic resin film to cover the surface of the bottle body 2. ing. A label 4 such as a barcode label is attached to the bottle 1 at an arbitrary position on the package 3.

When reusing the bottle 1 described above, the label 4 attached to the package 3 must be peeled off, or in order to peel off the label 4, the bottle 1 must first be reused as shown in FIG. Solvent tank 1
0 to reduce the adhesive force of the adhesive on the label 4 in the solvent tank 10, then the label 4 is peeled off in the label peeling section 20, and further in the cleaning section 30. , the adhesive remaining on the package 3 is washed away and transferred to a drying section 40 to be dried. A box transfer means 50 is provided to transfer the bottles to each of the above-mentioned processes. This box transfer means 50 is provided with a chuck head 51 that chucks the neck 2a of the bottle body 2 of the bottle 1 supported by an elevating rod 52, and a transfer flock 54 that moves the elevating rod 52 horizontally to a horizontal guide 53. It is configured by attaching it.

As shown in FIG. 3, the solvent tank 10 is a sealed container in which a solvent (for example, a fluorocarbon solvent) having a boiling point of about 74 to 92°C is stored. By heating the solvent tank 10, the solvent is turned into vapor. A solvent cooling pipe 11 is attached to the upper part of the solvent tank 10, so that the solvent can be condensed in the tank and recovered. An opening/closing door Oa is provided in the canopy of the solvent tank 10, and the bottle 1 can be inserted into and removed from the solvent tank 10 through the opening/closing door 10a.

Next, in the label peeling section 20, as shown in FIG.
A base 21 is provided to support the bottom of the bottle 1.
can be fixed in a sandwiched state between this base 21 and a suppressing plate 52a provided at the tip of the lifting rod 52. Then, a label peeling spatula 22 is attached to the surface of the package 3 in the bottle 1 fixed in this way.
are brought into contact with each other. The tip of this label peeling spatula 22 has a shape that follows the outer diameter of the bottle 1,
In order to prevent damage to the package 3, the portion that comes into contact with the package 3 is rounded, as shown in FIG. The label peeling spatula 22 is elastically supported by a rotational support member 23 via a spring 24, and while the rotational support member 23 rotates once, the label peeling spatula 22 comes into contact with the label 4 attached to the package 3. I try to peel it off by touching it.

Furthermore, the cleaning section 30 is composed of an adhesive removal tank 31 and a water washing tank 32 for storing a solvent and removing adhesive remaining on the package 3 after removing the label 4. Alternatively, both tanks 31, 32 are such that the bottle 1 can be brushed as appropriate.

This embodiment is constructed as described above, and its operation will be explained next.

Therefore, in order to peel off the label 4 attached to the shrink wrapper 3 of the bottle 1, first the bottle 1 is transferred to the box transfer means 50.
1 to 1 is introduced into the tank through the opening/closing door 10a of the solvent tank 10.
Leave for 2 minutes.

At this point, the inside of the solvent tank 10 is maintained at a high temperature of 74 to 92°C and is filled with solvent vapor.
This solvent vapor is quickly immersed between the label 4 and the package 3 to melt the adhesive and reduce its adhesive strength. However, depending on the composition of the adhesive, the label 4 may peel off when placed in this solvent vapor atmosphere, but thermoplastic adhesives are usually used for barcode labels and the like. Regardless of the type of adhesive, placing it under high-temperature solvent vapor can quickly reduce its adhesive strength. Furthermore, even if the label 4 is threaded and coated with coach ink, placing it under a high-temperature solvent vapor melts the wax, making it easier to peel off from the package 3. .

By the way, if the solvent is made into paper, it may pollute the surrounding environment, or the surrounding environment may be contaminated because the solvent tank 1o is formed as a closed container and the solvent is condensed using the solvent cooling pipe 11 and used for circulation. will not contaminate.

The bottle 1 in which the adhesive strength of the adhesive has been reduced in the solvent tank ]0 as described above is taken out from the solvent tank ]0,
The bottle 1 is transferred to the label peeling section 20, and the bottom thereof is brought into contact with the base 21, and the bottle 1 is fixed by being suppressed from above by the suppression plate 52a. Then, the label 4 is peeled off by bringing the label peeling spatula 22 into contact with the bottle 1 and rotating the rotary support member 23. At this point, since the adhesive strength of the label 4 to the package 3 has already been significantly reduced, it can be easily peeled off using the peeling spatula 22. Moreover, since the tip of the peeling spatula 22 is rounded and is elastically supported by the rotary support member 23 via the springs 24, the package 3 may be damaged during the label peeling operation. There's no fear. Also, 622 for peeling
Since the label has a length that extends to the entire length of the bottle, no matter where on the label 4 it is attached, it can be ensured that it is φ1#.

Even after the label 4 is peeled off with the peeling spatula 22 as described above, some adhesive remains on the package 3. The bottle 1 is then conveyed to the cleaning section 30 and immersed in an adhesive removal tank 31 and a water washing tank 32 in order to wash away the adhesive and solvent. Then, the bottle 1 is carried into the drying section 40 and dried, thereby completing the label peeling operation. Since this label peeling work can be completely automated, the work efficiency is significantly improved, and since it does not require manual labor, there are no problems with the work environment.

Next, the label peeling mechanism that goes into the label peeling section is as follows.
In addition to using the above-mentioned peeling spatula 22, for example, the sixth spatula 22 can be used.
As shown in the figure, a strong adhesive tape 50 can also be used. As shown in the figure, a strong adhesive tape 60 is made to run between the supply reel 52 attached to the movable flock 61 and the take-up reel 63, and a roller 6
4.65, and the bottle 1 is rotatably supported by a rotating shaft 66. Then, without rotating the rotary shaft 66, the strong adhesive tape 60 is repeatedly brought into and out of contact with the bottle 1, or the movable flock 6
A reflective type label detector 67 is attached to the label detector 1, and after the position of the label 4 is detected by the label detector 67, the strong adhesive tape 60 is brought into contact with the attachment position of the label 4. As a result, the label 4 whose adhesion to the package 3 has decreased can be transferred to the strong adhesive tape 6o.

[Effects of the invention 1 and below] - As described in detail, in the present invention, by introducing the bottle into the solvent bath, the adhesive force of the label attached to the packaging device on the bottle is reduced. By making this label peel off by mechanical means, it is possible to automatically and reliably peel off labels that are made of different materials, types of adhesive, and attached at different positions. Moreover, it is possible to prevent the bottle packaging from being damaged.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Figure 1 is an external view of a bottle to be processed, Figure 2 is an overall configuration diagram of a label peeling device, Figure 3 is an explanatory diagram of the configuration of a solvent tank, and FIG. 4 is an explanatory diagram of the configuration of the label peeling section, FIG. 5 is an enlarged view of the abutting part between the label peeling spatula and the bottle, and FIG. 6 is a configuration diagram showing another example of the label peeling mechanism. 1 Bottle, 2 Bottle body, 3 Shrink packaging, 4
Label, 10 Solvent tank, 10a, opening/closing door,] 1 Solvent cooling vibrator, 20. Label peeling part, 21. Base, 22
Label peeling spatula, 23, rotation support member, 24: spring, 30. Washing section, 40/drying section, 50° bottle transfer means, 5
1. Chuck head, 52: lifting lot, 53 horizontal kite, 60: strong adhesive tape, 62 supply reel, 630 take-up reel, 66: rotating shaft, 67 label detector.

Claims (4)

[Claims] (1) A solvent in which high-temperature solvent liquid or solvent vapor is stored and the bottle is immersed in it to reduce the adhesive strength of the label attached to the package such as shrink wrapping that covers the surface of the bottle. 1. A label peeling device for packaging bottles, comprising a tank and a label peeling means for mechanically peeling off the label. (2) Using a peeling spatula as the label peeling means,
The peeling spatula or the bottle is rotatably supported by a rotating means, and the peeling spatula or the bottle is rotated while the peeling spatula is elastically pressed against the surface of the bottle. The packaging bottle label peeling device according to claim 1, characterized in that the label is peeled off. (3) As the label peeling means, a strong adhesive tape is used, and by bringing the strong adhesive tape into contact with the label, the label is transferred to the adhesive tape. 1) Label peeling device for packaging bottles. (4) The packaging bottle label peeling device according to claim (3), further comprising a label position detection means for detecting the position of the label on the bottle.