JP2020037421A - Heat-shrinkable tubular label and container with label - Google Patents

Abstract

To provide a heat-shrinkable tubular label which allows residual quantities of contents to be visually recognized and can suppress deterioration in the contents caused by light.SOLUTION: A heat-shrinkable tubular label has one end part and the other end part and comprises a transparent base material film that covers a transparent trunk part of a container. The heat-shrinkable tubular label has an overlapped part where the one end part is overlapped on the other end part, and has at two places in the vicinity of the one end part and in the vicinity of the other end part adhesion parts that make the overlapped base material films adhere to each other. In a front face or on a rear face of the heat-shrinkable tubular label is provided a printed layer that has a light-shielding function and covers the transparent trunk part of the container, and in an area between the adhesion parts at the two places, portions of the heat-shrinkable tubular label positioned inside the overlapped part, is provided a transparent region in which the printed layer is not formed. In portions of the heat-shrinkable tubular label positioned outside the overlapped part, two perforations are provided at a position that can be cut off to expose the transparent region.SELECTED DRAWING: Figure 1

Description

  The present invention relates generally to heat-shrinkable tubular labels, and more particularly, to heat-shrinkable tubular labels having a light-blocking function, and labeled containers equipped with such labels.

  In recent years, with the spread of PET bottle beverages, various products have been sold by each beverage maker. These PET bottle beverages are decorated with labels that emphasize design, for the purpose of clarifying the differences from other companies and improving the image of the consumer segment.

  By the way, depending on the contents, the deterioration is accelerated by light. For this reason, a technique for providing a label with a light blocking function has been proposed (for example, see Patent Documents 1 and 2).

JP 2004-314559 A JP 2005-350097 A

  On the other hand, in a container for accommodating contents which are rarely used at once, it is required that the remaining amount of contents can be visually recognized. However, it is difficult to achieve both the light blocking function and the function of visually confirming the remaining amount of the content.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a heat-shrinkable cylindrical label that can visually confirm the remaining amount of contents and can suppress deterioration due to light. And

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

  The heat-shrinkable tubular label according to the present invention includes a transparent base film having one end and the other end and covering the transparent body of the container. The heat-shrinkable cylindrical label has a superposed portion in which one end is superimposed on the other end, and is overlapped at two positions near one end and near the other end of the superposed portion. And a bonding portion for bonding the base films to each other. The heat-shrinkable tubular label has a light-shielding function on the front and / or back surface, and is provided with a printed layer that covers the transparent body of the container. The heat-shrinkable tubular label is located inside the overlapping portion. In a region between the two bonding portions, a transparent region where a print layer is not formed is provided. Two perforations are provided on the heat-shrinkable tubular label portion located outside the overlapping portion at positions where the transparent region can be exposed by separation.

  In the present invention, the printing layer having the light blocking function is provided, and the transparent region is located on the back side (inside the overlapping portion) hidden by the printing layer. However, this transparent region can be exposed by separating two perforations provided outside the overlapping portion. In other words, at the distribution stage, the perforation is not cut off, but the printed layer covering the transparent body of the container ensures reliable light shielding, and when the user wants to visually check the remaining amount of the contents, the perforation is cut off. By exposing the transparent region.

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

  Further, the light blocking function in the present invention means that a cut rate of light in a wavelength region of 280 to 800 nm is 80% or more. In addition, since it is difficult to measure the light-shielding function of the print layer itself, it is assumed that the above-described light-shielding function is satisfied by the base film on which the print layer is formed.

  In addition, the vicinity of the upper and lower ends of the heat-shrinkable cylindrical label may have a configuration in which a printed layer is not formed and a transparent portion is formed, or a configuration in which only an underlayer is printed. Such upper and lower transparent portions and base portions can be used as a buffer space for continuously producing a heat-shrinkable tubular label, so as not to impair the design even in the case of cutting misalignment or the like. . The upper and lower transparent portions do not overlap with the transparent body portion, and the upper and lower base portions do not overlap with the transparent body portion or have a light shielding function.

  In addition, the transparent body of the container is a region from the bottom to the mouth of the container, and means all regions that are transparent. The heat-shrinkable cylindrical label according to the present invention may be configured to cover a part other than the transparent body (part or all of the mouth and the bottom), but these regions (for example, a transparent bottom, The portion covering the white mouth) may or may not have a light blocking function.

  The configuration of the printing layer is not particularly limited, but excluding the above-described base portions near the upper and lower ends, at least a layer on which a package design or the like is printed (called a design layer) and a base layer called a solid (called a base layer). And

  Examples of the underlying layer include a white underlying layer, a black underlying layer, a silver underlying layer, and the like. The underlying layer may be composed of a single 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. Further, for the silver base layer, a silver ink containing a metal powder such as aluminum can be used.

  The configuration of the print layer having the light shielding function is, for example, a design layer / white underlayer, a design layer / black underlayer, a design layer / silver underlayer, a design layer / white underlayer / black underlayer, a design layer / white underlayer. / Silver underlayer, design layer / white underlayer / black underlayer / silver underlayer, or design layer / white underlayer / silver underlayer / black underlayer, but are not necessarily limited to these. Absent. When a print layer composed of a plurality of layers is thus formed, these may be formed only on the front surface or the back surface of the base film, with one layer being the front surface of the base film and the remaining layer being the base layer. It may be formed on the back surface of the material film.

  The heat-shrinkable cylindrical label portion located inside the overlapping portion may be configured to have two perforations for removing the cylindrical label from the container. This makes it possible to collect the label portion and the container separately, thereby improving recyclability.

  The perforations of the heat-shrinkable cylindrical label portion located outside the overlapping portion and the heat-shrinkable cylindrical label portion perforation located inside the overlapping portion are provided at positions where the holes do not overlap. Configuration.

  If the perforation of the heat-shrinkable cylindrical label portion located outside the overlapping portion and the hole of the heat-shrinkable cylindrical label portion located inside the overlapping portion overlap, this hole There is a possibility that light may enter the container and deteriorate. With the above configuration, such deterioration can be prevented.

  For example, the line connecting the perforations is not overlapped (the line connecting the perforations is shifted in the circumferential direction). Although the lines connecting the perforations are partially or completely overlapped, there is no hole at all. Non-overlapping configurations can be adopted.

  When the UV cut layer is provided on the transparent region, deterioration due to ultraviolet light after exposing the transparent region can be prevented.

  The base film is not particularly limited as long as it has heat shrinkability and can be bonded with a sealing solvent, and is formed of a polyester resin, a polystyrene resin, a polyolefin resin, or a laminate thereof. preferable.

  Various known additives such as an ultraviolet absorber, an antiblocking agent, a lubricant, an antistatic agent, an antibacterial agent, and a stabilizer, and different resins may be appropriately added to the base film.

  In addition, it is essential that the substrate film is transparent, and this includes all of colorless and transparent, colored and transparent, and translucent.

  When a polyester film is used as the base film, 1,3 dioxolan or tetrahydrofuran is preferable as the sealing solvent, and when a polystyrene film is used, tetrahydrofuran or methyl ethyl ketone is preferable.

  The container may be made of a transparent or translucent material whose contents are visible, and is preferably made of a polyolefin-based resin or a polyester-based resin, but is not particularly limited.

  The UV cut layer is not particularly limited as long as it has a UV cut function and does not hinder transparency. Examples of the additive that contributes to the UV cut include a benzotriazole-based, triazine-based, benzophenone-based, benzoic acid-based, cinnamic acid-based, or salicylic acid-based ultraviolet absorber, and ultraviolet-absorbing inorganic particles such as zinc oxide and titanium oxide. Etc. can be used. For the UV cut layer, a material obtained by dispersing these ultraviolet absorbers or ultraviolet-absorbing inorganic particles in a resin component such as an acrylic resin or a urethane resin, and adding a lubricant such as wax or silicone, if necessary, is used. be able to.

  The UV cut function in the present invention means that the cut rate of light in a wavelength range of 280 to 400 nm is 80% or more (transmittance is 20% or less). In addition, the UV cut function only needs to be realized in the transparent region after the formation of the UV cut layer (the base film on which the UV cut layer is formed).

  Further, the printing layer and the UV cut layer may be formed by one printing or coating step, or may be formed through two or more steps.

  The labeled container of the present invention includes, for example, tea, coffee, tea, water, soft drinks, carbonated drinks, juices, and other drinks; alcoholic beverages such as sake and wine; liquid detergents; soy sauce, mirin, mentsuyu, oil, and the like. It can be used as a container for seasonings, cosmetics such as lotion, milky lotion, etc., and is particularly suitable for applications where the contents are easily degraded by light but the remaining amount is required to be visually recognized.

  According to the present invention, unnecessary light deterioration can be prevented because the transparent region that is covered with the print layer having the light shielding function and that can be exposed by separating the perforations is provided.

(A) is a front perspective view of the heat-shrinkable tubular label according to Embodiment 1, (b) is a front perspective view of the container equipped with the heat-shrinkable tubular label, and (c) is a drawing. It is sectional drawing which follows the BB plane in 1 (a), (d) is a front perspective view of the heat-shrinkable cylindrical label in the state which cut off the perforation. FIG. 4 is a development view of the heat-shrinkable cylindrical label according to the first embodiment. FIG. 10 is a development view of the heat-shrinkable cylindrical label according to the second embodiment. It is a perspective view which shows the relationship of two perforations. (A) is a front perspective view of a heat-shrinkable cylindrical label according to a modification of the present invention, and (b) is a front perspective view of a container equipped with the heat-shrinkable cylindrical label.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same portions are denoted by the same reference numerals, and description thereof will not be repeated.

(Embodiment 1)
FIG. 1A is a front perspective view of a heat-shrinkable tubular label according to the present invention, FIG. 1B is a front perspective view of a container equipped with the heat-shrinkable tubular label, and FIG. FIG. 1A is a cross-sectional view along the BB plane in FIG. 1A, FIG. 1D is a front perspective view of a heat-shrinkable tubular label in a state where perforations are cut off, and FIG. It is a development view of such a heat-shrinkable tubular label. The 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 obtained by bending the base film 3 into a tubular shape, overlapping one end 3a on the other end 3b, and bonding two places with a sealing solvent. It has bonding parts 15.

  As shown in FIG. 1C, a printing layer 5 is formed on the back surface of the base film 3 so as to cover the heat-shrinkable cylindrical label at least one round. The printing layer 5 has a configuration including three layers of a design layer 5c, a white underlayer 5a, and a black underlayer 5b in order from the back surface of the base film 3. In FIG. 1C, the thickness of the printed layer is shown to be small only in this portion in order to show the state of lamination of the printed layer in the overlapping 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. With these three layers, light shielding with a light transmittance of 80% or less in a wavelength range of 280 to 800 nm can be realized. When the light-shielding performance can be realized even with one underlayer, the number of underlayers may be one.

  As shown in FIG. 1 (c), in the overlapped portion, the printing film 5a, 5b, 5c is provided on the back surface including the portion to be an adhesive portion on the base film portion located on the outside, and Is a transparent region 16 on which no printing layer is provided at all. That is, in the region (L2 region in FIG. 2) near the other end 3b sandwiched between the two bonding portions 15, 15, the printing portion is not provided and remains transparent.

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

  With this configuration, until the two perforations 12 are separated, the transparent body of the container (the area between the semi-elliptical dashed line 2a and the bottom in FIG. 1B) is on the printing layer 5. Since it is covered, deterioration of the contents due to light can be prevented. Then, after the two perforations 12 are separated at a 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, a region above the semi-elliptical dashed line 2a is a white mouth portion, and light is prevented from entering the inside of the container therefrom.

  In the overlapping portion of the base film, the region sandwiched between the two perforations 12 and the transparent region 16 are arranged such that at least a part thereof overlaps the two perforations. By separating 12 and 12, the transparent region 16 in the overlapping portion can be exposed. For example, a configuration in which the entire transparent region 16 is covered by a region sandwiched by two perforations 12 and 12 and the entire transparent region 16 is exposed by separating the two perforations 12 and 12 may be employed. A configuration in which a part of the transparent region 16 is exposed by separating the two perforations 12 may be employed.

  Here, a configuration in which a UV cut layer is formed on the back surface of the transparent region 16 can be adopted. 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. 1B, the heat-shrinkable tubular label 1 is mounted on a container 2 such as a PET bottle and heat-shrinked for use. The heat shrinkage is performed by attaching the heat-shrinkable cylindrical label 1 to the body of a container 2 such as a PET bottle, and passing the attached container through a shrink tunnel to shrink. The filling of the contents in the container 2 may be performed before the heat-shrinkable tubular label 1 is attached to the container, or may be performed after the container is contracted through the shrink tunnel.

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

  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. When the positions of the holes overlap, light may enter the inside of the container through the holes and the contents may be deteriorated.

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

  For example, as shown in FIG. 4A, only the separation of the perforations 12 may be facilitated by reducing the interval between the holes of one of the perforations 12 and increasing the diameter of the holes. Good. Further, as shown in FIG. 4B, when one perforation 12 is arranged so as to be parallel to the height direction of the container and the other perforation 13 is extended, the wider perforation 13 is cut off. It becomes difficult. The size and spacing of the perforations may be constant, or may vary within the same perforation.

  Also, the line connecting the perforations should not overlap at the end on the mouth side of the container, and the line connecting the perforations should overlap at the end on the bottom side of the container. Separation becomes difficult, and only the region between the perforations 12 on the front side is separated to facilitate exposure of the transparent region. In addition, when separating from the bottom side, it is easy to separate at the same time, and a user who does not need to expose the transparent region can perform separation for recycling 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 print layer is formed. When provided in a transparent region, there is an advantage that the area of a light-transmitting region does not increase, and when provided in a region where a print layer is formed, it is easier to find or separate perforations. There is. In addition, at least one end of the perforations on the inner side of the superimposition is located in an area between the perforations on the outer side of the superimposition so that the inner perforations can be easily found visually after cutting off the outer perforation. It is preferable to provide them on the inner side of the perforations outside of the overlap.

(Embodiment 3)
This embodiment is the same as the above embodiment except that the heat-shrinkable cylindrical label has transparent portions (upper and lower transparent portions 8 and 9) as shown in FIG. This is the same as in the first embodiment.

  Such upper and lower transparent portions are used as buffer spaces for continuously producing heat-shrinkable cylindrical labels so as not to impair the design even if cutting misalignment or the like occurs.

  Here, as shown in FIG. 5B, 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 this case, the lower transparent portion does not need to be processed at all. As shown in FIG. 5 (b), the upper transparent portion 8 of the heat-shrinkable cylindrical label (portion above the semi-elliptical dashed-dotted line 2a in FIG. 5 (b)). However, when light from above the container does not pass through the mouth of the container having the light shielding function, the upper transparent portion does not need to be processed at all.

  On the other hand, when such a configuration is not adopted, for example, a configuration is adopted in which white (at least a configuration in which a white base layer is formed) is provided without providing upper and lower transparent portions, and light is shielded while securing a buffer space. Can be.

  The transparent area may be provided only in a part of the lower side of the cylindrical label. When the remaining amount in the container is large, it is enough to grasp roughly, such as when more than half remains, when more than one third remains, and when the remaining amount is small, we want to accurately grasp the remaining amount. There are not a few users. By doing as described above, it is possible to more accurately grasp the remaining amount when the remaining amount is small, while further suppressing deterioration due to light. In this case, a perforation may be provided so that only the transparent region is exposed, or the perforation may be connected to the upper and lower ends of the heat-shrinkable tubular label and cut off from the upper end to the lower end.

  The embodiments disclosed this time are illustrative in all aspects and are not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  ADVANTAGE OF THE INVENTION According to the heat-shrinkable cylindrical label which concerns on this invention, while preventing deterioration of the content by light, a user can visually recognize the remaining amount of a content when needed.

DESCRIPTION OF SYMBOLS 1 Heat-shrinkable cylindrical label 2 Container 2a Boundary between mouth and transparent body 3 Base film 3a One end 3b Other end 5 Printing layer 5a White underlayer 5b Black underlayer 5c Design layer 12 Outer perforation 13 Inner perforation 15 Adhesive part 16 Transparent area

Claims (5)

A heat-shrinkable cylindrical label comprising a transparent base film having one end and the other end, and covering the transparent body of the container,
The heat-shrinkable tubular label has an overlapping portion in which the one end is overlapped on the other end,
At two places near the one end portion and near the other end portion of the overlapped portion, having an adhesive portion for bonding the laminated base films to each other,
The heat-shrinkable cylindrical label has a light-shielding function on the front surface and / or the back surface, and is provided with a printing layer that covers the transparent body of the container,
A transparent region in which the print layer is not formed is provided in a region between the two adhesive portions, which is a heat-shrinkable tubular label portion located inside the overlapping portion,
In the heat-shrinkable cylindrical label portion located outside the overlapping portion, two perforations are provided at positions where the transparent region can be exposed by separation.
A heat-shrinkable cylindrical label characterized by the above-mentioned. The heat-shrinkable cylindrical label portion located inside the overlapping portion is provided with two perforations for removing the heat-shrinkable cylindrical label from the container,
The heat-shrinkable tubular label according to claim 1, wherein: The perforations of the heat-shrinkable cylindrical label portion located outside the overlapping portion and the heat-shrinkable cylindrical label portion perforation located inside the overlapping portion are provided at positions where the holes do not overlap. Have been
The heat-shrinkable cylindrical label according to claim 1 or 2, wherein: A UV cut layer is provided on the transparent area,
The heat-shrinkable tubular label according to any one of claims 1 to 3, wherein:   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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