JP7126905B2 - Heat-shrinkable tubular labels and labeled containers - Google Patents

Description

The present invention relates generally to heat-shrinkable tubular labels, and more particularly to heat-shrinkable tubular labels having a light-shielding function and labeled containers to which such labels are attached.

In recent years, with the spread of PET bottle beverages, various beverage makers are selling various products. These PET bottle beverages are decorated with labels that emphasize design in order to clarify the difference from other companies and to improve the image of the consumer segment.

By the way, depending on the contents, there are some that are accelerated by light. For this reason, techniques have been proposed to provide a label with a light shielding function (see Patent Documents 1 and 2, for example).

JP 2004-314559 A JP 2005-350097 A

On the other hand, in a container containing contents that are rarely used up at once, it is required to be able to visually recognize the remaining amount of the contents. However, it is difficult to achieve both the light shielding function and the visual recognition function of the remaining amount of contents.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat-shrinkable tubular label that allows the remaining amount of contents to be visually recognized and that is capable of suppressing deterioration due to light. and

Another object of the present invention is to provide a container fitted with such a heat-shrinkable tubular label.

A heat-shrinkable tubular label according to the present invention comprises a transparent base film having one end and the other end and covering a transparent body of a container. The heat-shrinkable tubular label has a superimposed portion in which one end is superimposed on the other end, and the superimposed portion is superimposed at two locations near one end and near the other end of the superimposed portion. It has an adhesion part for adhering the base films to each other. The front and/or back surface of the heat-shrinkable tubular label has a light-shielding function and is provided with a printed layer that covers the transparent body of the container, and is the heat-shrinkable tubular label portion located inside the overlapping portion. A transparent region in which no printed layer is formed is provided in the region between the two adhesive portions. The heat-shrinkable tubular label portion located outside the overlapping portion is provided with two perforations at positions where the transparent region can be exposed by tearing.

In the present invention, a printed layer having a light shielding function is provided, and the transparent region is located on the back side (inside the overlapping portion) hidden by this printed layer. However, this transparent area can be exposed by cutting off the two perforations provided on the outer side of the overlapping portion. In other words, without cutting off the perforations in the distribution stage, the printed layer covering the transparent body of the container ensures reliable light blocking, and when the user wants to visually check the remaining amount of the contents, the perforations are cut off. This can be done by exposing the transparent areas with a thin film.

Here, the transparent region may be formed in the entire region between the two bonding portions, or may be provided in a part of the region between the bonding portions. The distance between the bonded portions is preferably 10-30 mm, more preferably 15-25 mm.

Further, the light shielding function in the present invention means that the cut rate of light in the wavelength range of 280 to 800 nm is 80% or more. Since it is difficult to measure the light shielding function of the printed layer itself, it is assumed that the base film on which the printed layer is formed satisfies the above light shielding function.

The vicinity of the upper and lower end portions of the heat-shrinkable tubular label can be configured to be a transparent portion without forming the printed layer, or to have a configuration in which only the base layer is printed. Such upper and lower transparent parts and base parts can be used as cushioning spaces so as not to impair the design even if misalignment occurs in cutting during continuous production of heat-shrinkable tubular labels. . The upper and lower transparent parts should not overlap with the transparent body part, and the upper and lower base parts should not overlap with the transparent body part or have a light shielding function.

Further, the transparent body of the container means the entire transparent region from the bottom to the mouth of the container. The heat-shrinkable tubular label according to the present invention may be configured to cover portions other than the transparent body (part or all of the mouth and bottom), but these regions (for example, transparent bottom, The portion covering the white mouth) may or may not have a light shielding function.

The structure of the printed layer is not particularly limited, but at least a layer printed with a package design or the like (referred to as a design layer) and a base layer called solid (referred to as a base layer), excluding the base portion near the upper and lower ends described above. and

Examples of the underlying layer include a white underlying layer, a black underlying layer, a silver underlying layer, and the like, and the underlying layer may be composed of a single underlying layer or a combination of these layers.

A white ink containing titanium oxide, barium sulfate, calcium carbonate, or the like can be used for the white underlayer, and a black ink containing carbon black or the like can be used for the black underlayer. In addition, silver ink containing metal powder such as aluminum can be used for the silver underlayer.

The structure of the printed layer having a light shielding function is, for example, design layer/white underlayer, design layer/black underlayer, design layer/silver underlayer, design layer/white underlayer/black underlayer, design layer/white underlayer. / silver base layer, design layer / white base layer / black base layer / silver base layer, or design layer / white base layer / silver base layer / black base layer, etc., but not necessarily limited to these do not have. In this way, when a printed layer composed of multiple layers is formed, these may be formed only on the front surface of the base film or only on the back surface. It may be formed on the back surface of the material film.

The portion of the heat-shrinkable tubular label located inside the overlapping portion may be configured to have two perforations for removing the tubular label from the container. As a result, the label portion and the container can be collected separately, improving recyclability.

The perforations of the heat-shrinkable tubular label portion positioned outside the overlapped portion and the perforations of the heat-shrinkable tubular label portion positioned inside the overlapped portion are provided at positions where the holes do not overlap. It can be configured as

When the perforated holes of the heat-shrinkable tubular label portion located outside the overlapping portion overlap with the perforated holes of the heat-shrinkable tubular label portion located inside the overlapping portion, this Light may enter the inside of the container through the hole and cause deterioration. With the above configuration, such deterioration can be prevented.

For example, the lines that connect the perforations do not overlap (the lines that connect the perforations are displaced in the circumferential direction), and the lines that connect the perforations partially or completely overlap, but there are no holes. A configuration that does not overlap can be adopted.

If a UV cut layer is provided on the transparent region, it is possible to prevent deterioration due to ultraviolet light after the transparent region is exposed.

The base film is not particularly limited as long as it has heat shrinkability and can be adhered with a sealing solvent. preferable.

Various known additives such as ultraviolet absorbers, antiblocking agents, lubricants, antistatic agents, antibacterial agents, stabilizers, and different resins may be added to the base film for the purpose.

In addition, the base film must be transparent, which includes all of colorless transparent, colored transparent, and translucent.

The sealing solvent is preferably 1,3 dioxolane or tetrahydrofuran when a polyester film is used as the base film, and tetrahydrofuran or methyl ethyl ketone when a polystyrene film is used.

The container is not particularly limited as long as it is made of a transparent or translucent material that allows the contents to be visually recognized, and is preferably made of a polyolefin-based resin or a polyester-based resin.

The UV cut layer is not particularly limited as long as it has a UV cut function and does not impair transparency. Additives that contribute to UV cut include, for example, benzotriazole-based, triazine-based, benzophenone-based, benzoic acid-based, cinnamic acid-based, or salicylic acid-based UV absorbers, and UV-absorbing inorganic particles such as zinc oxide and titanium oxide. etc. can be used. For the UV cut layer, these UV absorbers and UV absorbing inorganic particles are dispersed in resin components such as acrylic and urethane, and if necessary, a lubricant such as wax or silicone is added. be able to.

The UV cut function in the present invention means that the cut rate of light in the wavelength region of 280 to 400 nm is 80% or more (transmittance is 20% or less). Moreover, this UV cut function may be realized in the transparent region (base film on which the UV cut layer is formed) after forming the UV cut layer.

Moreover, the printed layer and the UV cut layer may be formed by one printing or coating process, or may be formed by two or more processes.

The labeled container of the present invention includes, for example, beverages such as tea, coffee, black tea, water, soft drinks, carbonated drinks, and juices; alcoholic beverages such as sake and wine; liquid detergents; soy sauce, mirin, mentsuyu, oil, etc. It can be used as a container for cosmetics such as seasonings, lotions, milky lotions, etc. It is particularly suitable for applications that require visual recognition of the remaining amount even though the contents are easily deteriorated by light.

According to the present invention, since a transparent region is provided that is covered with a printed layer having a light shielding function and can be exposed by cutting off perforations, unnecessary deterioration due to light can be prevented.

(a) is a front perspective view of a heat-shrinkable tubular label according to Embodiment 1, (b) is a front perspective view of a container fitted with the heat-shrinkable tubular label, and (c) is a drawing. 1(a) is a cross-sectional view along the BB plane, and (d) is a front perspective view of a heat-shrinkable tubular label with perforations cut away. FIG. 2 is an exploded view of the heat-shrinkable tubular label according to Embodiment 1; FIG. 10 is an exploded view of the heat-shrinkable tubular label according to Embodiment 2; It is a perspective view showing the relationship of two perforations. (a) is a front perspective view of a heat-shrinkable tubular label according to a modification of the present invention, and (b) is a front perspective view of a container fitted with the heat-shrinkable tubular label.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same reference numerals are given to the same parts, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1(a) is a front perspective view of a heat-shrinkable tubular label according to the present invention, FIG. 1(b) is a front perspective view of a container fitted with the heat-shrinkable tubular label, and FIG. FIG. 1(a) is a cross-sectional view along the BB plane, (d) is a front perspective view of the heat-shrinkable tubular label with the perforations removed, and FIG. FIG. 4 is a developed view of the heat-shrinkable tubular label concerned. A heat-shrinkable tubular label 1 according to Embodiment 1 includes a base film 3 having one end 3a and the other end 3b. The heat-shrinkable tubular label 1 is formed by bending a base film 3 into a tubular shape, overlapping one end 3a on the other end 3b, and adhering two portions with a sealing solvent. It has adhesion parts 15 and 15 .

As shown in FIG. 1(c), a printed layer 5 is formed on the back surface of the base film 3 so as to cover at least one round of the heat-shrinkable tubular label. The printed layer 5 is composed of three layers, a design layer 5c, a white base layer 5a, and a black base layer 5b, in order from the back surface of the base film 3. As shown in FIG. In addition, in FIG. 1C, the thickness of the printed layer is shown to be small only in this portion in order to show the laminated state of the printed layer in the overlapped portion.

A white ink containing titanium oxide, barium sulfate, calcium carbonate, or the like can be used for the white underlayer, and a black ink containing carbon black or the like can be used for the black underlayer. The design layer is a layer on which a package design or the like is printed, and its material is not particularly limited. These three layers can realize light shielding with a transmittance of 80% or less for light in the wavelength range of 280 to 800 nm. If the above-described light shielding performance can be achieved with only one underlayer, the number of underlayers may be one.

As shown in FIG. 1(c), in the superimposed portion, printed layers 5a, 5b, and 5c are provided on the back surface of the base film portion positioned on the outer side, including the portion to be the adhesive portion. The portion of the base film located at 1 is a transparent region 16 in which no print layer is provided. In other words, the region near the other end 3b (the region L2 in FIG. 2) sandwiched between the two adhesive portions 15 does not have a printed portion and remains transparent.

On the other hand, two perforations 12, 12 are provided in the vicinity of one end 3a (the portion covering the transparent region 16) sandwiched between the two adhesive portions 15, 15, and these perforations are separated. Thereby, the transparent region 16 can be exposed (see FIG. 1(d)).

With this configuration, until the two perforations 12 and 12 are cut off, the transparent body of the container (the area between the semi-elliptical dashed line 2a and the bottom in FIG. 1(b)) is covered with the printed layer 5. Since it is covered, deterioration of the contents due to light can be prevented. After the two perforations 12, 12 are separated at the timing desired by the user, the transparent region 16 is exposed, and the remaining amount of the contents can be visually recognized. In the present embodiment, the region above the semi-elliptical dashed line 2a is a white mouth portion, from which light is prevented from entering the interior of the container.

In addition, in the overlapped portion of the base film, if the area sandwiched between the two perforations 12 and the transparent area 16 are arranged so that at least a part thereof overlaps, the two perforations Separation of 12-12 exposes the transparent area 16 of the overlapping portion. For example, the entire transparent area 16 may be covered by the area sandwiched between the two perforations 12, 12, and the entire transparent area 16 may be exposed by separating the two perforations 12, 12. It may be arranged such that a part of the transparent region 16 is exposed by cutting off the two perforations 12,12.

Here, a configuration in which a UV cut layer is formed on the back surface of the transparent region 16 can be employed. By adopting this configuration, even after the transparent region 16 is exposed, deterioration of the contents due to ultraviolet rays can be prevented.

As shown in FIG. 1(b), the heat-shrinkable tubular label 1 is attached to a container 2 such as a PET bottle and then heat-shrunk for use. Heat shrinking is performed by attaching the heat-shrinkable tubular label 1 to the body of a container 2 such as a PET bottle, passing the attached container through a shrink tunnel, and shrinking the label. The filling of the contents into the container 2 may be performed before attaching the heat-shrinkable tubular label 1 to the container, or after the container is shrunk through a shrink tunnel.

(Embodiment 2)
FIG. 3 is a development view of a heat-shrinkable tubular label according to the second embodiment. This embodiment is the same as the first embodiment except that two perforations 13, 13 are provided near the transparent region 16 so that the heat-shrinkable tubular label can be removed from the container. is. According to this embodiment, the container and the label can be collected separately, improving recyclability.

Here, the perforations 12 and 12 and the perforations 13 and 13 are preferably provided so that the positions of the holes do not overlap. If the positions of the holes overlap, light may enter the inside of the container through the holes and deteriorate the contents.

Here, the perforation 12 for exposing the transparent region and the perforation 13 for removing the tubular label may be provided in any way. For example, when the line connecting the perforations 12 and the line connecting the perforations 13 are on the same line (see FIG. 4(d)), it becomes easy to separate the two at the same time, and when they are not on the same line (see FIG. 4 ( a) see), and at the same time it becomes difficult to separate.

For example, as shown in FIG. 4(a), by reducing the distance between the holes of one of the perforations 12 and increasing the diameter of the holes, only the separation of the perforations 12 can be facilitated. good. Further, as shown in FIG. 4(b), when one perforation 12 is arranged parallel to the height direction of the container and the other perforation 13 is arranged so as to spread, the widened perforation 13 is separated. become difficult. The size and spacing of the perforations may be constant, or may vary within the same perforation.

Also, if the lines connecting the perforations do not overlap at the end of the container on the mouth side, and the lines connecting the perforations overlap at the end on the bottom side of the container, when separating from the mouth side at the same time Separation becomes difficult, and only the area between the perforations 12 on the front side is separated to facilitate the exposure of the transparent area. In addition, when separating from the bottom side, it is easy to separate at the same time, and for users who do not need to expose the transparent area, sorting for recycling can be performed in one operation.

Here, the perforations on the inner side of the overlap may be provided in the transparent region, or may be provided in the region where the printed layer is formed. If it is provided in a transparent area, there is an advantage that the area through which light is transmitted does not increase, and if it is provided in an area where a printed layer is formed, it is easier to find and separate perforations. There is In addition, at least one end of the perforations on the inner side of the overlap is placed within the area sandwiched by the perforations on the outer side of the overlap so that the inner perforations can be easily found visually after the outer perforations are separated ( It is preferable to provide it on the inner side of the perforations on the outer side of the overlap).

(Embodiment 3)
As shown in FIG. 5( a ), this embodiment is the same as the above embodiment, except that the heat-shrinkable tubular label has transparent portions (upper transparent portion 8 and lower transparent portion 9 ) above and below the heat-shrinkable tubular label. is the same as in form 1 of

Such upper and lower transparent portions are used as cushioning spaces so as not to impair the design even if misalignment occurs in cutting during continuous production of heat-shrinkable tubular labels.

Here, as shown in FIG. 5(b), the entire lower transparent portion of the heat-shrinkable tubular label is in contact with the bottom surface of the container, and light from above the container does not hit this transparent portion at all (not visible from above). In some cases, this lower transparent portion does not need to be processed at all. Also, as shown in FIG. 5B, the upper transparent portion 8 of the heat-shrinkable tubular label is the mouth portion of the container having a light shielding function (the portion above the semi-elliptical dashed line 2a in FIG. 5B). However, if it overlaps with the opening of the container having a light shielding function and the light from above the container does not pass through the opening, the upper transparent portion does not need to be processed at all.

On the other hand, if such a form is not taken, for example, the upper and lower transparent portions are not provided, and white (at least a structure in which a white base layer is formed) is used, and a light shielding structure is adopted while securing a buffer space. can be done.

The transparent region may be configured to be provided only on a portion of the lower side of the tubular label. When the remaining amount in the container is high, it is sufficient to roughly grasp the remaining amount, such as when the remaining amount is more than half, or when the remaining amount is more than 1/3. There are quite a few users. By doing so, it becomes possible to accurately grasp the remaining amount when the remaining amount is low while further suppressing deterioration due to light. In this case, perforations may be provided so that only the transparent region is exposed, or the perforations may be connected to the upper and lower ends of the heat-shrinkable tubular label and separated from the upper end to the lower end.

The embodiments disclosed this time are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims.

According to the heat-shrinkable tubular label of the present invention, it is possible for the user to visually recognize the remaining amount of the contents when necessary while preventing deterioration of the contents due to light.

REFERENCE SIGNS LIST 1 heat-shrinkable tubular label 2 container 2a border between mouth and transparent trunk 3 base film 3a one end 3b other end 5 print layer 5a white base layer 5b black base layer 5c design layer 12 outer perforation 13 Inner Perforation 15 Adhesive Portion 16 Transparent Area

Claims (5)

A heat-shrinkable tubular label comprising a transparent base film having one end and the other end and covering a transparent body of a container,
The heat-shrinkable tubular label has an overlapped portion in which the one end is overlapped on the other end,
Adhering portions for bonding the superimposed base films to each other are provided at two locations in the vicinity of the one end portion and the other end portion of the overlapping portion,
A printed layer having a light shielding function is provided on the surface and/or the back surface of the heat-shrinkable tubular label and covers the transparent body of the container,
A transparent region in which the printed layer is not formed is provided in a region between the two adhesive portions in the heat-shrinkable tubular label portion located inside the overlapping portion,
The heat-shrinkable tubular label portion located outside the overlapping portion is provided with two perforations at positions where the transparent region can be exposed by cutting.
A heat-shrinkable tubular label characterized by: The heat-shrinkable tubular label portion located inside the overlapping portion is provided with two perforations for removing the heat-shrinkable tubular label from the container.
The heat-shrinkable tubular label according to claim 1, characterized in that: The perforations of the heat-shrinkable tubular label portion located outside the overlapping portion and the perforations of the heat-shrinkable tubular label portion located inside the overlapping portion are positioned so that the holes do not overlap. provided,
The heat-shrinkable tubular label according to claim 2 , characterized in that: A UV cut layer is provided on the transparent region,
The heat-shrinkable tubular label according to any one of claims 1 to 3, characterized in that: A labeled container to which the heat-shrinkable cylindrical label according to any one of claims 1 to 4 is attached.

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