JP4121917B2 - Shrink label for container and shrink label coated container - Google Patents

Description

  The present invention relates to a light-shielding shrink label for a container that covers a container that transmits light, and a container that is covered with the light-shielding shrink label for a container.

  Conventionally, beverages sold at stores are filled in containers such as glass bottles and plastic bottles, and consumers purchase beverages filled in containers. Containers filled with beverages are often transparent glass bottles or transparent plastic bottles, and plastics such as polyethylene terephthalate (PET) are used for the plastic bottles. A part of the side surface of these containers is covered with a shrink label or a paper label on which a design, a product name, or the like is printed, and gives consumers information about the beverage.

By the time a beverage filled in a container is consumed by a consumer, the container is often displayed at a store and exposed to light rays such as sunlight. The light rays that strike the container are projected into the container from the side of the container that is not covered by the shrink label or paper label. Depending on the type of beverage, there is a risk of deterioration or alteration due to exposure to light.
For example, when sunlight is applied to beer or happoshu, the smell of sunlight is added and the flavor deteriorates. In addition, when light is applied to a beverage containing a natural substance such as vitamin C, the natural substance in the beverage may be photodegraded. Furthermore, there is a similar risk for flavors and coloring agents used in beverages.

  In order to prevent the beverage in the container from being deteriorated or altered by the light beam, the beverage itself is improved to impart light resistance to the light beam to the beverage. For example, beer is manufactured from reduced hops instead of natural hops, light resistance is given to the beer, and a sunlight odor is prevented from being attached to the beer due to light transmitted through the container. However, since the beverage itself is improved, the flavor of the beverage changes, and the light-resistant beverage does not necessarily match the consumer's preference.

  Further, instead of improving the beverage itself, a container filled with the beverage is also improved. For example, a glass bottle or a PET bottle is colored green or brown to prevent light from passing through the container. However, containers colored in green or brown have various limitations in recycling the containers, and there are many problems such as the colored containers must be collected separately.

For this reason, the container is made into a transparent glass bottle, PET bottle, etc., and the recycling of the container is facilitated, and all sides of the container are covered with a shrink label to prevent the light from directly entering the container. It is practiced to prevent deterioration and alteration of the beverage (for example, see Patent Document 1). When disposing of this container after drinking the beverage in the container, it is necessary to remove the shrink label from the container to facilitate the recycling of the container. And the shrink label can be easily peeled from the container by breaking the shrink label along the perforated hole group.
Republished Patent No. WO99 / 52788

However, forming a group of perforations for peeling on the shrink label having a light-shielding property, and covering all the side surfaces of the container with this shrink label, it is not possible to sufficiently prevent the light from being projected into the container, There was a possibility that the beverage in the container could not be prevented from being deteriorated or deteriorated by light.
In other words, there is a risk that the light from the perforation group for peeling formed in the shrink label will enter the container, and the light in the container from the hole group may affect the beverage in the container. is there.

  Here, for reference, FIG. 6 shows the results of a test investigating the degree of sunlight odor produced in beer filled in various conventional containers. The container used in this test is a transparent glass bottle (conventional example 1) in which a perforation for peeling is formed on a shrink label having a light shielding property, and all sides are covered with this shrink label, and a light shielding shrink without a perforation. It is the transparent glass bottle (conventional example 2) which coat | covered all the side surfaces with the label. Each of these containers was filled with beer, irradiated with light equivalent to that irradiated with sunlight for 1 hour, and the sunlight odor produced in the beer in each container was subjected to sensory evaluation. In this sensory evaluation, an evaluation score was given to the sunlight odor of the beer in each container, with 0 points indicating no sunlight odor at all and 4 points for sunlight odor enough to bring complaints from consumers. The perforation holes for peeling formed on the shrink label of Conventional Example 1 were circular holes with a diameter of 0.4 mm, and the interval between the holes was 1 mm.

From FIG. 6, it can be seen that a slight sunlight odor is felt from the beer in the container of Conventional Example 1 and only a slight sunlight odor is felt from the beer in the container of Conventional Example 2. That is, the generation of sunlight odor in the beverage in the container is greatly improved by not forming perforated holes in the shrink label.
However, if the perforated hole group disappears from the shrink label, it becomes difficult to peel the shrink label from the container, which may lead to recycling of the container that is still covered with the shrink label. When the number of containers to be recycled while being covered with the shrink label increases, it is necessary to peel the shrink label from the container in the recycling process, which is not preferable because the recycling process becomes complicated.
The present invention has been made in order to solve the above-described problems of the prior art, and the object of the present invention is to prevent the beverage in the container from being affected by light and to facilitate the recycling of the container. It is providing the light-shielding shrink label for containers and the light-shielding shrink label coating container.

The present invention adopts the following configuration in order to solve the problem. The container shrink label according to the invention of claim 1 is a cylindrical container shrink label that covers a container whose opening is closed by a stopper, and has a heat-shrinkability as well as a light-shielding property that blocks light transmission. And has a tongue portion that continuously extends in the cylinder length direction of the cylinder, and a portion of the cylinder portion that overlaps the tongue portion forms a perforation forming area. Inside, a perforation group that is continuous in the body length direction is formed, and the length in the body length direction of the cylinder before heat shrinkage is the side surface of the container excluding the plug body by the shrink film after heat shrinkage. all, Ri dimensions der sufficient for at least covering the first adhesive means formed on the back surface along the time the first side edge of the shrink film to a rectangular, and the first side The distance from the parallel second side The second bonding means formed on the surface along the second side of the lever is formed of a cylinder formed by overlapping and bonding, on the surface of the shrink film, the second side, The portion between the second adhesive means forms the tongue, and on the surface of the shrink film, from the first adhesive means, between the second side and the second adhesive means. The perforation forming area is formed up to a portion closer to the center by the same distance as the distance .

  According to the first aspect of the present invention, the entire side surface of the container can be covered with the light-shielding container shrink label, so that the light beam is prevented from being directly projected into the container from the side surface of the container. In addition, since the container shrink label has a light shielding property, it is possible to prevent a light beam projected on the container shrink label from being transmitted through the container shrink label and into the container. Further, the tongue portion can close the perforated hole group formed in the container shrink label from the inside of the cylinder. By closing the perforated hole group with the tongue, it is also possible to prevent light rays from directly entering the container through the perforated hole group.

Accordingly, since the container shrink label prevents the light from being projected into the container, the container can be made transparent, and the container can be easily recycled.
In addition, by tearing and tearing the container shrink label along the perforation hole group, the container shrink label can be easily peeled off from the container, and only the container can be easily sent to the container recycling process. The container shrink label that complicates the recycling process is prevented from being sent to the recycling process together with the container.

In addition, as a shrink film which has heat shrinkability, a polyester-type film, a polystyrene-type film, an olefin-type film etc. can be mentioned, for example. In addition, as means for imparting light-shielding properties to the shrink film, means for coloring by adding a pigment in the shrink film, means for making at least one of the front or back surface of the shrink film a printing surface with a pigment or the like Can be mentioned.
The perforation hole group that continues in the body length direction may be a single hole group that continues in the body length direction or a plurality of hole groups. Moreover, the space | interval of holes is random and you may form the hole group of a perforation by the hole group which continues in the trunk | drum length direction.

Container shrink label according to the invention of claim 1 includes a first adhesive means formed on the back surface along the time the first side edge of the shrink film forming a rectangle, and the first side A surface of the shrink film comprising a cylinder formed by overlapping and adhering a second adhesive means formed on the surface along the second side at a distance from the parallel second side. In the above, a portion between the second side and the second bonding means constitutes the tongue, and the second side and the second bonding means are on the surface of the shrink film. A portion between the first adhesive means and the center of the tongue on the surface of the shrink film by the same distance as the distance between the second side and the second adhesive means. A portion closer to the side forms the perforation forming area.

According to the first aspect of the present invention, the cylindrical container shrink label in which the tongue portion projects to the inner peripheral surface side when the first adhesive means and the second adhesive means formed on the shrink film are laminated and adhered. Is easily manufactured.
A shrink-label coated container according to the invention of claim 2 is a container in which the shrink label for containers according to claim 1 is heat-shrinked to cover at least all of the surfaces, and a part of the shrink label for containers is Covering at least a part of the stopper of the container, and the portion of the container shrink label that forms the tongue is sandwiched between the portion that forms the perforation forming area and the surface of the container, A group of perforations is closed from the inner peripheral surface side of the cylinder by the tongue.

According to the invention of claim 2 , all the side surfaces of the container whose opening is closed with the stopper are covered with the container shrink label, and the continuity between the stopper and the container side is also covered with the container shrink label. Yes. In addition, since the perforated holes of the container shrink label are blocked by the tongue, it is possible to prevent light from being applied to the beverage in the container during transportation or storage, and the beverage in the container is affected by the light. It is also prevented from receiving.

In addition, as a container coat | covered with the shrink label for containers, regardless of whether it is a glass bottle and a plastic bottle, it does not ask | require coloring, and it does not ask | require the degree of transparency. However, from the viewpoint of container recycling, it is preferable to use a colorless and transparent glass bottle or plastic bottle.
Moreover, as a drink filled in the container coat | covered with the shrink label for containers, for example, a soft drink containing a natural substance, such as beer and vitamin C, and the fragrance | flavor and coloring agent which are easy to produce deterioration by light, a low alcohol drink, etc. The various drinks can be mentioned.
Furthermore, examples of the plug include a crown, a screw cap, and an easy open breakable cap.

  Since the present invention is a light-shielding shrink label for containers and a light-shielding shrink label-coated container as described above, the light shielding for containers that can prevent the beverage in the container from being affected by light and facilitate the recycling of the container. There is an effect that a protective shrink label and a light-shielding shrink label coating container can be provided.

The best mode for carrying out the present invention will be described with reference to FIGS.
First, the configuration of the embodiment of the present invention will be described.
The shrink film 10 shown in FIG. 1 is made of, for example, a polyester film having heat shrinkability, and has a vertically long rectangle. On the back surface 12 of the shrink film 10, characters, designs, and the like are printed on the entire surface with a pigment to provide light shielding properties, and light can be prevented from passing through the shrink film 10. The temperature at which the shrink film 10 is thermally shrunk is T1.

Of the two long sides 16a, 16b of the shrink film 10, an organic solvent that forms the first bonding means 18 is applied on the back surface 12 of the shrink film 10 continuously along one long side 16a. Yes. The organic solvent that forms the first bonding means 18 is a solvent that can dissolve the polyester.
An organic solvent constituting the second bonding means 20 is applied on the surface 14 of the shrink film 10 continuously along the other long side 16b. A width W is provided between the second bonding means 20 and the long side 16b. The organic solvent forming the second bonding means 20 is the same as the organic solvent forming the first bonding means 18 and is a solvent that can dissolve the surface 14 of the shrink film 10. And the part of the width W between the 2nd adhesion | attachment means 20 and the long side 16b has comprised the tongue part 22. FIG.

A perforation forming area 24 is formed continuously along the long side 16a on the inner side of the shrink film 10 adjacent to the first bonding means 18. The width of the perforation forming area 24 is W and has the same width dimension as the tongue 22.
In the perforation forming area 24, two rows of holes 26 forming perforations are continuously formed along the long side 16a.

Moreover, the container 30 filled with beer is prepared. The container 30 is a container called a so-called pressure-resistant bottle, and is made of a transparent PET bottle that has been conventionally used for filling beverages. The opening of the container 30 is closed by a plug 32 made of a white plastic screw cap.
This embodiment is configured as described above, and the operation thereof will be described next.

The shrink film 10 is rolled up with the front surface 14 of the shrink film 10 outside, the first adhesive means 18 on the back surface 12 of the shrink film 10 and the second adhesive means 20 on the surface are overlapped, and the shrink film 10 is elongated. A cylindrical shape is used.
The organic solvent that forms the first bonding means 18 dissolves the back surface 12 of the shrink film 10 under the first bonding means 18, and the organic solvent that forms the second bonding means 20 is the second bonding means 20. The surface 14 of the shrink film 10 below is melted, and the melted portions of the front surface 14 and the back surface 12 are welded to each other. At this time, the tongue portion 22 located on the longer side 16b side than the second bonding means 20 is in a state of projecting to the inner peripheral surface side of the cylinder of the shrink film 10, and on the inner peripheral surface, The portion 22 and the perforation forming area 24 overlap each other. Since the width of the tongue portion 22 and the width of the perforation formation area 24 are both W, the holes 26 in the perforation formation area 24 are closed by the tongue portion 22.

  Next, the cylinder of the shrink film 10 is cut in the circumferential direction with a predetermined interval L in the length direction to obtain a cylindrical container shrink label 28 (see FIG. 2). The length of the cylinder of the container shrink label 28 is L. This length L is a dimension determined in accordance with the size of the container 30. The length L is slightly longer than the entire length of the container 30 closed by the stopper 32, and as will be described later, the container is thermally contracted. The container shrink label 28 attached to the container 30 has a length sufficient to cover the entire side surface of the container 30 and cover the lower part of the stopper 32 and the peripheral part of the bottom surface 31 of the container 30. In the container shrink label 28 shown in FIG. 2, the long side 16 b of the tongue 22 is arranged on the inner periphery of the cylinder of the container shrink label 28 in order to show the positional relationship between the tongue 22 and the perforation forming area 24. It represents the state lifted from the surface.

  Next, the container shrink label 28 is covered from the outside of the container 30, and the entire container 30 is positioned inside the cylinder of the container shrink label 28 from the stopper 32 to the bottom of the container 30. And the shrink label 28 for containers is heated to temperature T1. When the container shrink label 28 reaches the temperature T <b> 1, heat shrinkage starts, and the container shrink label 28 adheres and covers the surface of the container 30. As described above, since the length in the trunk length direction of the container shrink label 28 before heat shrinkage is L, the entire side surface of the container 30, the lower part of the stopper 32, and the peripheral side part of the bottom surface 31 of the container 30 are covered. (See FIGS. 3 and 4).

When the container shrink label 28 is thermally shrunk, the tongue 22 and the perforation forming area 24 are also heat shrunk, and the tongue 22 after the heat shrinking is formed from the perforation forming area 24, the surface of the container 30 and the surface of the plug body 32. It is in a state of being sandwiched between. That is, the holes 26 in the perforation forming area 24 are closed from the inner peripheral surface side of the container shrink label 28 by the tongue 22.
When the coating of the container 30 with the container shrink label 28 is completed, the container 30 becomes a light-shielding shrink label coated container. When the container 30 becomes a light-shielding shrink label-coated container, the container 30 is packed in a cardboard box and shipped to a retail store, taken out of the cardboard box at the retail store, and displayed at the storefront. 30 are sold to consumers.

  In the container 30 displayed at the store, the container shrink label 28 covers the lower part of the stopper 32 and the holes 26 in the perforation forming area 24 are also closed by the tongue 22. The light beam does not directly enter the container 30 from the side surface. Further, since the shrink film 10 forming the container shrink label 28 has a light shielding property, the light beam does not pass through the container shrink label 28 and enter the container 30. Therefore, the light beam is prevented from reaching the beer in the container 30, and the beer is also prevented from being affected by the light beam in the container 30.

  When the consumer drinks the beer in the container 30, the consumer tears the upper part of the container shrink label 28 along the hole 26 group and covers the plug 32 of the container shrink label 28. The upper part is peeled off, and the plug body 32 is exposed to the outside to be opened. When the consumer finishes drinking the content beer and discards the container 30, the container shrink label 28 is broken along the holes 26 remaining without being broken when the container is opened. All of 28 is peeled off and removed. When the container shrink label 28 is peeled from the container 30, the container 30 is discarded as a PET bottle for recycling. Since the container 30 is a transparent PET bottle, it is easy to recycle.

In the present embodiment, it is assumed that characters and the like are printed on the back surface 12 of the shrink film 10, but instead, it is possible to provide light shielding properties by printing characters and the like on the front surface 14 of the shrink film 10. Of course there is.
In the present embodiment, two rows of holes 26 are formed continuously along the long side 16a in the perforation forming area 24. However, the holes 26 are continuous along the long side 16a. Of course, the arrangement of the holes 26 is not limited to such a configuration. For example, as shown in Modification 1 of FIG. 5I, it is possible to form three rows of holes 26 in the perforation forming area 24 along the long side 16a. Further, as shown in Modification 2 of FIG. 5 (ii), it is also possible to form a group of holes 26 by randomly arranging the holes 26 continuously along the long side 16a in the perforation forming area 24. It is.

  Further, in the present embodiment, the hole 26 group has already been formed in the perforation forming area 24 of the shrink film 10 before the shrink film 10 is rolled into a cylindrical shape. Instead, the shrink film 10 It is needless to say that the hole 26 group can be already formed in the perforation forming area 24 after rounding and forming a cylinder. In this case, for example, the hole 26 group is formed in the perforation forming area 24 by a laser beam whose output is controlled.

In the present embodiment, the first bonding means 18 and the second bonding means 20 are formed by applying an organic solvent. However, the first bonding means 18 and the second bonding means 20 are organic. Of course, the adhesive is not limited to a solvent, and an adhesive capable of adhering the front surface 14 and the back surface 12 of the shrink film 10 to each other is also possible.
In the present embodiment, when the surface of the container 30 is covered with the container shrink label 28, the container shrink label 28 is covered from the outside of the container 30, and the entire container 30 extends from the stopper 32 to the bottom of the container 30. Is positioned inside the cylinder of the container shrink label 28. However, when the stopper 32 is colored rather than transparent and light cannot pass through the stopper 32, when the container shrink label 28 is placed from the outside of the container 30, the transparent side of the container 30 It suffices if it is located inside the cylinder of the shrink label 28. And the shrink label 28 for containers is heat-shrinked, and all the transparent side surfaces of the container 30 are covered with the shrink label 28 for containers.

In the present embodiment, the container 30 is a transparent PET bottle. Instead, the container 30 can be a plastic bottle made of another material or a glass bottle, and the container 30 is translucent. Of course, it may be colored.
Moreover, in this Embodiment, although beer was filled in the container 30, of course, it can be filled with various drinks, such as sparkling liquor, carbonated drinks, and non-carbonated drinks.

Further, in the present embodiment, when the container 30 becomes a light-shielding shrink label coated container, the container 30 is packed in a cardboard box and shipped to a retail store, but the upper part is opened instead of the cardboard box. Of course, the container 30 can be packed in a plastic case before shipment.
When the container 30 is packed in a plastic case and shipped, the container 30 being transported or stored may be placed under a light beam such as sunlight. However, as in the case where the container 30 is displayed at the storefront, the light beam is prevented from entering the container 30, and the beer is also prevented from being affected by the light beam in the container 30.

  By preventing the light from being injected into the container between the time when the beverage filled in the container is shipped and consumed by the consumer, the beverage is affected by the light in the container. The present invention can be applied to a use for preventing, and can also be applied to a use for disposing empty containers as easily recyclable containers.

It is a top view of the shrink film which concerns on embodiment of this invention. It is a perspective view of the light-shielding shrink label for containers concerning an embodiment of the invention. It is a front view of the container coat | covered with the light-shielding shrink label for containers which concerns on embodiment of this invention. It is a bottom view of the container coat | covered with the light-shielding shrink label for containers which concerns on embodiment of this invention. It is a perspective view of the light-shielding shrink label for containers of the modification. It is explanatory drawing of the sensory evaluation test of sunlight odor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shrink film 12 Shrink film back surface 14 Shrink film surface 16a, 16b Long side of shrink film 18 First adhesion means 20 Second adhesion means 22 Tongue 24 Perforation formation area 26 Hole 28 Shrink label for container 30 Container 31 Bottom of container 32 Plug

Claims (2)

A cylindrical container shrink label covering a container whose opening is closed by a stopper,
It consists of a shrink film that has heat-shrinkability as well as a light-shielding property that blocks light transmission,
On the inner peripheral surface of the cylinder, it has a tongue that continuously protrudes in the barrel length direction of the cylinder,
The part of the tube that overlaps the tongue forms a perforation forming area,
In the perforation formation area, a group of perforations that are continuous in the trunk length direction are formed,
The body length direction length of the tube before heat shrinkage is a dimension that is sufficient to cover at least all of the side surfaces of the container excluding the plug body with the shrink film after heat shrinkage ,
The first adhesive means formed on the back surface along the edge of the first side of the shrink film having a rectangular shape, and the second side spaced apart from the second side parallel to the first side. A second adhesive means formed on the surface along the side of the
On the surface of the shrink film, a portion between the second side and the second bonding means forms the tongue,
On the surface of the shrink film, the perforation forming area extends from the first bonding means to a portion closer to the center by the same distance as the distance between the second side and the second bonding means. container shrink label, wherein the eggplant. The container shrink label according to claim 1 is heat-shrinked, and is a container that covers at least all the side surfaces among the surfaces,
A part of the container shrink label covers at least a part of the stopper of the container, and a part of the container shrink label that forms the tongue part forms a perforation forming area; A shrink-label coated container, wherein the group of perforations sandwiched between the two is closed from the inner peripheral surface side of the cylinder by the tongue .

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