JP2003237741A - Shrink package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shrink package comprising a container and a tubular heat shrinkable film attached thereto, wherein a consumer can easily and surely unseal a packaging material along perforations of the material. <P>SOLUTION: The shrink package comprises two pieces including a cap shrink label for covering the packaging material from a mouth to a neck of a peripheral surface of the container, and a body shrink label for covering the material to a bottom from the neck of the peripheral surface of the container where a part of the cap shrink label overlaps. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging body in which a packaging material is coated on the entire container and is heated to be attached to the container.

[0002]

2. Description of the Related Art Conventionally, for filling and packaging beer, vitamin drinks, milk / milk drinks, juice, carbonated drinks, drinking water such as water and tea, or oil, seasonings, and various other liquid foods, Various types of plastic bottles, glass bottles, metal cans, etc. (hereinafter referred to as "containers") have been developed. Thus, on the surface of these containers, for the purpose of protecting, binding, labeling, etc. of the containers, a part or all of the mouth, neck, body, etc. of the above-mentioned containers are quickly covered or bound. A shrink film (hereinafter, also referred to as “heat-shrinkable film”) is known as a packaging material. As a shrink wrapping method, for example, there is known a method in which a tubular or bag-shaped film is subjected to primary wrapping with some allowance, and then the film is shrunk to the outer peripheral surface of the container by hot air, steam or the like. . Also, as another shrink wrapping method, the film is wrapped in a tensioned state to some extent, the end of the film is folded into the bottom of the container, and the folded part is first wrapped by self-adhesion or heat fusion between the films. There is also known a method such as a stretch shrink in which the film is subjected to a shrink treatment to remove looseness and wrinkles of the film. Since the shrink wrapping material can be shrink-wrapped in a container having any shape such as a square shape, a round shape, or a gourd shape, the shape of the container can be widely selected. Further, as the shrink wrap, since the shrink film and the container are not directly adhered, they can be completely separated from the container. Therefore, from the viewpoint of recycling, from the viewpoint of recycling, it is expected that demand for shrink packages that can be separated from containers will increase more and more in the future. Further, as shown in FIG. 8, the shrink package is a package for packaging the entire surface of these containers and the sealed portion (hereinafter referred to as "full shrink"). Then, the tab for opening (separation start part)
When the perforation is engraved with the starting point as the starting point, by grasping and pulling the knob piece upward, the cap shrink portion from the mouth portion to the neck portion and the shrink portion of the container main body are separated along the perforation.

[0003]

However, as shown in FIG. 9, the cap shrink portion has a problem in that when the knob is picked up and pulled, it breaks in the middle and cannot be opened smoothly until the end. In order to solve the above-mentioned problem, a packaging material is formed by forming a non-printing portion in which a printing layer is not provided at a predetermined position of a packaging material, and engraving the perforation on the non-printing portion. Japanese Patent Laid-Open No. 2000-
No. 53154 is proposed. However, even in the case described above, the cap shrink portion that causes the heat-shrinkable film stretched in the circumferential direction of the container to highly shrink (70 to 80% or more) is hardened with a thick wall, and the perforation is used as a starting point. Since it is easy to tear in the lateral direction and it is difficult to open it, it is the current situation that the above problems have not been solved. Moreover, it is easier for the consumer to open the shrink wrapping material from the upper side to the lower side than to open the shrink wrapping material from the lower side to the upper side. However, when opening the cap shrink wrapping material from the upper side to the lower side, a low shrinkage rate (30 to 40%) with the main body attached.
Since the wrapping part (below) is softer than the cap shrink wrapping part and is more likely to be broken, there is a disadvantage that the shrink part of the main body is accidentally broken together with the cap shrink part. Thus, in a full-shrink package in which a container filled with a content that needs to have a light-shielding property is shielded from external light by a film, external light cannot be shielded from a broken portion, so that the content is not storable. It is lost and presents a problem that the contents deteriorate.

[0004]

In order to solve the above-mentioned problems, the inventors of the present invention have earnestly studied and as a result, shrink-wrap a packaging material made of a heat-shrinkable film from the mouth to the neck of the container body. The cap shrink label and the body shrink label in which the packaging material is shrink-wrapped from the neck portion to the bottom portion of the container main body where a part of the packaging material overlaps each other have a full-shrink form, thereby providing excellent openability. This is a finding of a full shrink package. The present invention is a shrink package in which a tubular heat-shrinkable film is attached to a container, and perforations for opening are engraved in a direction intersecting with the shrinking direction of the film, along the perforations. In a package capable of breaking the packaging material attached to the container, a cap shrink label that covers the packaging material from the mouth to the neck of the container peripheral surface,
It is an object of the present invention to provide a shrink wrapping body comprising two pieces of a body shrink label that covers the packaging material from a neck portion to a bottom portion of a container peripheral surface where a part of the cap shrink label overlaps. In the above, it is also possible to provide a shrink package, in which the packaging material has a light-shielding property.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the package of the present invention will be described below with reference to the drawings. Figure 1
FIG. 1 is an overall perspective view of a shrink package including a partial cross section showing a first embodiment of the present invention. As shown in FIG. 1, the embodiment of the present invention exemplifies a container in which a packaging material made of a heat-shrinkable film is shrink-wrapped from the mouth to the bottom. The shrink wrap according to the present invention is formed by fitting a tubular heat-shrinkable film as a wrapping material onto a container. As the shrink wrapping body, a cap shrink wrapping portion that covers the wrapping material from the mouth portion to the neck portion of the container peripheral surface, and the wrapping material from the neck portion of the container peripheral surface where a part of the cap shrink wrapping portion overlaps It is made up of two pieces, a body shrink wrap and a bottom cover.

FIG. 2 (a) is a front view of the cylindrical cap shrink label before heat shrinkage, showing the first embodiment of the present invention. As shown in FIG. 2 (a), the cap shrink label according to the present invention is one in which perforations are provided on both sides of the bonding part, starting from the tab for opening the label (cutting start part). Is. Figure 2 (b)
[Fig. 4] is a front view of a tubular cap shrink label showing another embodiment of the first embodiment of the present invention. As shown in FIG. 2 (b), a cap shrink label according to another embodiment of the present invention has a tab for opening the label (separation start portion) as a starting point, and perforations on both sides of the portion other than the bonding. It is provided.

FIG. 3A is a perspective view of the mouth portion of the shrink package, showing the first embodiment of the present invention. Figure 3
As shown in (a), the cap shrink label according to the present invention is provided with a tab (separation start portion) for opening the label formed by cutting. Thus, perforations are engraved starting from the knob. Further, the knob piece is configured to be provided on the upper end of the cap shrink label and broken from the upper side to the lower side. Although not shown, the knob may have a configuration in which it is provided at the lower end and is broken from the lower side to the upper side.

FIG. 3 (b) is a bottom front view of the shrink wrapping body showing the first embodiment of the present invention. Figure 3 (b)
As shown in (1), the body shrink label according to the present invention is one in which the packaging material is wrapped from the neck portion of the container to the inside of the bottom portion and covered. Thus, perforations are engraved starting from the knob. Although not shown, the knob may be provided at the lower end and ruptured from below to above, or may be provided at the upper end and ruptured from above to below. .

FIG. 4 (a) is an overall perspective view of a shrink wrap including a partial cross section showing a second embodiment of the present invention. As shown in FIG. 4A, the embodiment of the present invention exemplifies a container in which a packaging material made of a heat-shrinkable film is shrink-wrapped from the mouth to the bottom. The shrink wrap according to the present invention is formed by fitting a tubular heat-shrinkable film as a wrapping material onto a container. As the shrink wrapping body, a cap shrink wrapping part covering the wrapping material from the mouth part of the container peripheral surface to the shoulder part at the base of the neck part, and a container in which the wrapping material partly overlaps the cap shrink wrapping part It is made up of two pieces, a body shrink wrapping part covering from the neck part to the bottom part of the peripheral surface.

FIG. 4B is a perspective view of the mouth portion of the shrink wrapping body showing the second embodiment of the present invention. Figure 4
As shown in (b), the cap shrink label according to the present invention is provided with a tab (separation start portion) for opening the label formed by cutting. Thus, perforations are engraved starting from the knob.

FIG. 5 shows a third embodiment of the present invention.
It is a mouth perspective view of a shrink package. As shown in FIG. 5, the cap shrink according to the present invention is provided with a notch (cutting start portion) for opening a label formed by making a V-shaped cut. Then, perforations are engraved starting from the notch.

FIG. 6 shows a fourth embodiment of the present invention.
It is a lower part front view of a shrink package. As shown in FIG. 6, the body shrink label according to the present invention is one in which the packaging material is covered from the neck portion of the container to the outer peripheral edge of the bottom portion.

In the present invention, the heat-shrinkable film that is a packaging material is not particularly limited as long as it has printability, and is a heat-shrinkable polyethylene terephthalate film or polystyrene film generally used for shrink labels. , Polypropylene film, low density polyethylene film, medium density polyethylene film, high density polyethylene film, low density linear polyethylene film, cyclic polyolefin film, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene -Acrylic acid copolymer, ethylene-
Polyolefin film formed from resin such as methyl acrylate copolymer, modified polyolefin film formed from resin such as chlorinated polyethylene and chlorinated polypropylene, film formed from vinyl chloride-vinyl acetate copolymer resin A film, an acrylic resin film or the like can be used. The heat-shrinkable film may be colored transparently or opaquely with a coloring agent such as a pigment. The thickness of the heat-shrinkable film is not particularly limited, but is appropriately selected within a range that does not impair heat resistance, rigidity, workability when used as a label, appearance, etc., and is preferably 5 to 70 μm, and preferably 15 to 60 μm. desirable. The body shrink label and the cap shrink label have different types of packaging materials,
You may use the heat shrinkable film which has a different film thickness. As the film type of the body shrink label, it is preferable to use a polyethylene terephthalate film or the like from the viewpoints of printability, rigidity, and workability when used as a label. As the film type of the cap shrink label, it is preferable to use a soft polystyrene film or the like, which is a film material, from the viewpoint of opening property. The film thickness of the cap shrink label is not particularly limited, but it is preferably thinner than the body shrink label, and preferably about 9 to 50 μm, from the viewpoint of opening property.

In the present invention, a printing layer may be provided on the heat-shrinkable film, and the printing layer may be the entire surface of the heat-shrinkable film or a part thereof such as gravure printing, flexographic printing, offset printing and the like. The pattern is formed by using a known printing technique. As the ink used in the printing layer, a commonly used ink that has adhesiveness to the heat-shrinkable film and has necessary resistance can be used. It is preferable to print with a gravure ink, which is an ink having high heat resistance. The thickness of the printing layer is not particularly limited, but is preferably about 1 to 10 μm,
About 2 to 5 μm is desirable. In the present invention, an ink containing a pigment such as aluminum paste or titanium oxide having a light shielding property may be used in order to impart a light shielding function to the packaging material.

In the present invention, the heat-shrinkable film includes
If necessary, lubricants, fillers, heat stabilizers, antioxidants,
You may add various additives, such as an ultraviolet absorber, an antistatic agent, a flame retardant, and a coloring agent. Also, on the surface of the film,
In order to improve printability, conventional surface treatment such as corona discharge treatment, plasma treatment, flame treatment and acid treatment may be applied.

In the present invention, a thin film layer of a metal such as aluminum (Al) may be formed on the heat-shrinkable film so that the packaging material has a light-shielding function. Further, in the present invention, the metal thin film layer may be in the state of not only one layer of the metal thin film but also a laminated body in which two or more layers are laminated, and the metal used may be one kind or It is also possible to use a mixture of two or more kinds to form a metal thin film mixed with different materials. The thickness of the thin film layer of the metal varies depending on the metal used, but is preferably about 50 to 1000Å, and 100 to 100.
It is desirable that it is formed to a thickness of 0Å.

In the present invention, two or more of the above heat-shrinkable films may be laminated and laminated, and the adhesive constituting the shrink laminate is, for example, a polyurethane-based adhesive.
Vehicles such as polyester, polyamide, epoxy, poly (meth) acrylic, polyvinyl acetate, polyolefin or modified polyolefin, casein, wax, ethylene- (meth) acrylic acid copolymer, polybutadiene, etc. Of various types such as solvent type, water-based type, solventless type, or hot-melt type, which are the main components of
Adhesives can be used. In the above, the coating amount of the adhesive for laminate is 0.1 to 5 g / m.
² (dry state) is desirable.

In the present invention, the method of laminating the heat-shrinkable film via the adhesive may be, for example,
Roll coating, gravure coating, knife coating, dip coating, spray coating, or other coating method, followed by drying the solvent, diluent, etc. to form the laminate. can do. Urethane-based adhesives are preferably used as the adhesive for bonding the films, but other adhesives can be used as long as they are publicly known and do not impair sanitary conditions.

Then, the lower end portion and the upper end portion which are both end portions of the heat shrinkable film are overlapped, and then, the polymerized portion of the end portion is used as a joint portion to perform heat fusion or an adhesive. Then, the seal portion is formed by pasting together to form a shrink label made of a tubular body. The shrink label may have a tubular shape.

The perforation provided on the shrink label according to the present invention can be applied by, for example, a method of pressing a disc-shaped blade having a cut portion and a non-cut portion repeatedly formed on the periphery thereof. The perforation comprises two vertical perforations, which are carved up to the lower end of the label starting from the tab for opening the shrink label. In addition,
The perforation is not limited to two, and it is possible to provide one or a plurality of three or more. Also, FIG.
As shown in (a), the perforations may be provided at positions on both sides of the laminating section, or as shown in FIG. 2 (b), may be provided at positions other than the laminating section. Further, the perforation can be performed at an appropriate stage in the process of manufacturing a shrink label made of a tubular body, that is, the shrink film cutting process, the tube attaching process, and the shrink label cutting process. As the perforation, hot water at 70 to 90 ° C 1
In the case of a hard heat-shrinkable film such as a polyethylene terephthalate film, which has a maximum heat shrinkage of 70 to 80% or more in 0 seconds, a cut length of 0.7 mm and a non-cut length of 1.4 mm are preferable. . The perforation has a maximum heat shrinkage of 70 at 90 to 90 ° C. for 10 seconds.
-80% or more, and in the case of a soft heat-shrinkable film such as a polystyrene film, the length of the cut portion is 0.6 mm
Therefore, the length of the non-cut portion is preferably 2.4 mm.

A method of attaching the tubular body of the two-piece shrink label according to the present invention produced above to a container will be described below. FIG. 7: is a schematic block diagram which shows an example of the automatic label mounting apparatus of the shrink wrapping body which shows 1st Embodiment of this invention. As shown in FIG. 7, in the container, a body having a substantially uniform diameter e is formed on the lower side, and a mouth having a smaller diameter than the body is formed above the body. The mouth portion is formed in a taper shape in which the diameter gradually decreases toward the upper opening portion, and the diameter f of the thinnest smallest portion is 37% of the diameter e of the body portion,
Also, the diameter g of the tubular shrink film described above.
Is 103 to 110% of the diameter g of the body. Further, the opening that opens above the mouth is closed with a closing body such as a crown or a screw cap.

As shown in FIG. 7, in the first labeler A of the automatic label attaching apparatus, the body shrink label continuum is cut into a desired size by a slitter, and the outer surface of the filled container is continuously supplied. Fit in. Next, the container fitted with the body shrink label is transferred to the bottom shrinker B, and after adjusting the amount of wrapping at the bottom of the body shrink wrapping material to the required length, enter the body shrinker C and pass through the shrink tunnel. ,
Hot air at a predetermined temperature, for example 80 to 200 ° C, steam,
Also, by applying radiant heat such as steam or infrared rays that are heated by steam formed by dew condensation of water vapor, the body shrink label is provided from the neck portion to the bottom portion of the container body by highly contracting in the circumferential direction. Obtainable. Next, in the second labeler D, the cap shrink label continuum is cut into a desired size with a slitter and fitted to the outer surface of the mouth portion of the body shrink package obtained as described above, and the cap shrink label After adjusting the winding amount of the upper part to the required length, enter the cap shrinker E, pass through the shrink tunnel, and highly shrink in the circumferential direction, thereby providing the shrink label from the mouth to the bottom of the container body. A two-piece shrink wrap according to the invention can be manufactured.

Referring to FIG. 1, first, the body shrink label is packaged from the lower end portion a of the container peripheral surface to the neck portion (root portion of the mouth) c, and the lower end portion of the container is heated. It is shrink-wrapped from a to neck c. Next, the outer peripheral edge of the upper surface of the closing body is also covered with the cylindrical cap shrink label and heated, so that the closing body is heated from the upper end portion d to a part of the body shrink label. Are shrink-wrapped to the overlapping neck portion b. That is, as the packaging body according to the present invention, a body shrink label and a cap shrink label are used to obtain a packaging body in a full shrink form in which the entire circumference of the container is covered and the periphery of the closure body is also shrink-wrapped. .

When the shrink label is attached, the body shrink label and the cap shrink label 2 are attached.
Since the piece is attached, even the mouth portion having a large diameter difference with respect to the body portion can be surely covered and a uniform covering state can be obtained.

As the shrink wrap after heat shrinkage, the shrink wrap has two pieces, a body shrink label and a cap shrink label, so that the shrink wrap is 1 from the bottom to the mouth.
Compared to the case where the shrink label of the piece is heat-shrinked,
The amount of label shrinkage between the body portion and the mouth portion does not differ greatly. Therefore, the entire container can be shrink-wrapped with the packaging material having a substantially uniform thickness without the mouth portion becoming thicker than the body portion.

Next, in the shrink package manufactured as described above, the cap shrink label is opened. That is, the knob piece is pulled downward and the cap shrink label is divided into left and right parts along the perforation and removed. At this time, the cap shrink label is less likely to be cut off midway, and the cap shrink label can be easily and surely opened up to the lower end.

Moreover, since the body shrink label and the cap shrink label are packaged from two pieces, it is possible to remove only the cap shrink label without breaking the cap shrink label to the body shrink label when opening. .

As described above, by removing the label on the mouth portion, the closure of the closing body is released and the mouth portion can be opened.

Examples of the container of the shrink package according to the present invention include containers such as glass bottles, plastic bottles and metal cans. Examples of the resin that constitutes the plastic container include vinyl polymers such as olefin polymers such as polypropylene and styrene polymers such as polystyrene, polyesters, vinyl chloride resins, and the like. The shape of the container may be round, square, octagonal, or gourd.

The contents of the container include beer, vitamin drink, milk / milk drink, juice, carbonated drink, water, drinking water such as tea, oil and fat, seasoning, and various other liquid foods, A lotion, a liquid detergent, etc. are mentioned.

[0031]

EXAMPLES Examples of the package according to the present invention will be described in detail below. As a heat-shrinkable synthetic resin film for a body shrink label, a polyethylene terephthalate film having a thickness of 50 μm (manufactured by Toyobo Co., Ltd., S
7553) was prepared.

On the above heat-shrinkable synthetic resin film,
Clios 950 Shiro (manufactured by The Inktech Co., Ltd.) as a pattern print layer of a grid pattern, plate depth 40 μm, line number 1
Gravure printing was performed using a halftone screen.

On the above-mentioned pattern printing layer, as a silver-colored ink (overall solid printing) layer, a halftone plate having a plate depth of 40 μm and a line number of 175 lines is used with Clio high brightness silver (manufactured by The Inktech Co., Ltd.). Then, gravure printing was performed by double overprinting the entire surface.

On top of the silver ink (entire solid printing) layer, a white ink (entire solid printing) layer is used as Clios 9
70 conchiro (manufactured by The Inktech Co., Ltd.) was used for full-face gravure printing using a halftone plate having a plate depth of 40 μm and a number of lines of 175 lines. As a result, a body shrink film consisting of a polyethylene terephthalate film / a pattern printing layer / a silver ink (solid printing twice) / a white ink solid printing layer was obtained.

Then, the body shrink film obtained as described above was rewound into a roll. After cutting into a label sheet of a desired size, perforations having a width of 15 mm on both sides of the bonded portion, a cut portion length of 0.7 mm and a non-cut portion length of 1.4 mm intersect the shrinking direction. Two lines were applied in the direction. After that, the shrinking direction of the body shrink film is the circumferential direction of the container, and (the outside of the container) polyethylene terephthalate film / picture printing layer / silver ink (full solid double printing) layer / white ink full solid printing layer (inside the container) Thus, both ends of the body shrink film were overlapped with each other, and the overlapped portions were heat-bonded with a welding seal to obtain a long body-shaped body shrink label continuous body having a container circumferential direction of 110 mm.

As the heat-shrinkable synthetic resin film for the cap shrink label, a polystyrene film (DXL21945, manufactured by Toyobo Co., Ltd.) having a thickness of 50 μm was prepared as the heat-shrinkable synthetic resin film.

On the above-mentioned heat-shrinkable synthetic resin, an X-PS950 white (manufactured by Dainichiseika Co., Ltd.) was used as a grid pattern pattern printing layer, and a halftone plate having a plate depth of 40 μm and a number of lines of 175 lines was used. Gravure printing was applied.

OSM (manufactured by Dainichiseika Co., Ltd.) as a black ink (overall solid printing) layer on the picture pattern printing layer.
Then, gravure printing was performed by double overprinting on the entire surface using a halftone plate having a plate depth of 40 μm and 175 lines.

PS-10 was used as a white ink (entire solid printing) layer on the white ink (entire solid printing) layer.
Conchiro (manufactured by Dainichiseika Co., Ltd.), plate depth 40 μm,
Gravure printing was performed on the entire surface using a halftone plate having 175 lines. As a result, a cap shrink film of the example consisting of a polystyrene film / a pattern printing layer / a black ink (printing on the entire surface twice) / a white ink solid printing layer was obtained.

Thereafter, the cap shrink film obtained as described above was rewound into a roll. After cutting into a label sheet of a desired size, perforations having a width of 15 mm on both sides of the bonded portion, a cut portion length of 0.6 mm, and a non-cut portion length of 2.4 mm intersect the shrinking direction. Two lines were applied in the direction. After that, the width direction of the cap shrink film is the circumferential direction, and (the outside of the container) polystyrene film / pattern printing layer / black ink (entire solid printing twice)
Layer / white ink whole surface solid printing layer (inside the container), the both ends of the cap shrink film are overlapped, and the overlapped part is heat-bonded by a welding seal to form a long cylindrical cap with a container circumferential direction of 75 mm. A continuum of shrink labels was obtained.

A container having a height of 226 mm, a body having a diameter of 65.8 mm, and a mouth having a diameter of 24.6 mm was prepared. The diameter of the mouth is
It is 37% of the diameter of the body. Contents (milk drink) 5
The glass bottle container filled with 00 ml and the obtained cylindrical body shrink label continuum were supplied to an automatic label mounting device as shown in FIG. 1 for the above continuum
As a result of cutting at intervals of 85 mm, 110 m in the circumferential direction of the container
m, a body shrink label of 185 mm was obtained in a direction intersecting the circumferential direction. The width of the body shrink label is 108% of the circumference of the container.
Next, after fitting the body shrink label on the outer surface of the container, the winding amount k of the bottom part was adjusted to 20 mm, the bottom part was heated with a steam heater at 90 ° C. for 10 seconds, and the bottom part was shrink-fitted. Next, the label was shrink-mounted on the body in the same manner as on the bottom. As a result, a shrink package of the example in which the body shrink label was provided from the neck to the bottom of the container body was obtained. Next, the obtained cylindrical cap shrink label continuous body was supplied to an automatic label mounting device and cut at intervals of 75 mm. As a result, to explain with reference to FIG. 2 (a), 75 m in the circumferential direction
m, a size of 75 mm in the direction intersecting the circumferential direction, and a cap shrink label provided with a trapezoidal tab having an upper side j7 mm, a bottom i15 mm, and a height h5 mm at the upper end was obtained.
Next, after fitting the outer surface of the mouth of the container and adjusting the winding amount r of the cap shrink label to 5 mm, it was heated with a steam heater at 90 ° C. for 10 seconds to shrink-fit the mouth. As a result, a cap shrink wrapping body of an example in which the cap shrink label was provided from the neck portion to the mouth portion of the container body was obtained. That is, as the package according to the present invention, a body shrink label and a cap shrink label are in a full shrink form in which the bottom and the entire periphery of the container are covered and the periphery of the closure is shrink-wrapped, and A two-piece shrink package having excellent design and design was obtained.

Further, as for the obtained two-piece shrink package, the label was opened downward from the upper end along the perforations. As a result, the tab was not hard, and therefore the label was easily opened. Moreover, it was possible to remove only the cap shrink label without breaking the shrink label covering from the neck to the bottom.

[0043]

As described above, according to the shrink wrapping body of the present invention, the neck portion is highly shrunk even when the packaging material is highly shrunk in the container in which the outer dimensions of the body and the outer dimension of the mouth greatly differ. It is possible to provide a full-shrink package in which two pieces of a body shrink label covering from the bottom to the periphery of the bottom and a cap shrink label covering from the mouth to the neck are mounted. Therefore, as compared with the full-shrink package mounted in one piece, it is possible to cover a variety of container shapes, and it is also possible to provide a shrink package with a design. Also, cap shrink labels and body shrink labels can be made of different film types and thicknesses. Therefore,
By selectively using a material that is softer than the body shrink label or a packaging material having a thin film thickness for the cap shrink label, it is possible to provide a full shrink package that can be easily and surely opened by the consumer.
Further, by using a film having excellent printability for the body shrink label, it is possible to provide a full shrink package having excellent design. Moreover, when the cap shrink label is opened, it is possible to provide a shrink package in which only the cap shrink label can be removed without breaking the shrink label covering from the neck to the bottom. In addition, with the packaging material having a light-shielding function, full-shrink packaging of a container filled with contents such as beer, milk and milk drink, which are easily deteriorated by external light, provides a very excellent light-shielding shrink. Packaging products can be provided.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a shrink package including a partial cross section showing a first embodiment of the present invention.

FIG. 2 (a) is a front view of the tubular cap shrink label before heat shrinkage showing the first embodiment of the present invention.
(B) It is a front view of a cap shrink label before heat shrinking in a tubular shape showing another embodiment of the first embodiment of the present invention.

FIG. 3 (a) is a perspective view of a mouth portion of the shrink package. (B) It is a lower part front view of the said shrink package.

FIG. 4 (a) is an overall perspective view of a shrink wrap including a partial cross section showing a second embodiment of the present invention. (B) It is a mouth perspective view of the said shrink package.

FIG. 5 is a perspective view of the mouth portion of the shrink wrapping body, showing the third embodiment of the present invention.

FIG. 6 is a bottom front view of the shrink package showing the fourth embodiment of the present invention.

FIG. 7 is a schematic configuration diagram showing an example of an automatic label attachment device for shrink wrapping bodies, showing the first embodiment of the present invention.

FIG. 8 is a perspective view showing a conventional one-piece full shrink package.

FIG. 9 is a perspective view showing a state in which a conventional one-piece full shrink wrapping material is opened.

[Explanation of symbols]

1 Body shrink label (packaging material) 2 Cap shrink label (packaging material) 3 containers (attached items) 31 torso 32 shoulder 33 neck 34 mouth 35 bottom 36 Laminating section 37 Mouth part 38 Bottom part 4 Full shrink label (packaging material) 5 occluder 6 picked pieces 7 notches 8 perforations 8a cutting part 8b Non-cutting part 10 1-piece shrink package 20 2 piece shrink wrap a Lower end b Neck (lower side) c Neck (upper side) d Upper end e Diameter of body f Diameter of mouth g Diameter of tubular shrink film h Height of picked piece i Bottom of picked piece j Upper side of picked piece k Bottom entrainment amount r Mouth involvement amount A first labeler B bottom shrinker C body shrinker D Second Labeler E cap shrinker

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Claims (2)

[Claims] 1. A shrink wrapping body in which a tubular heat-shrinkable film is mounted in a container, wherein the wrapping material is perforated for opening in a direction intersecting the shrinking direction of the film, In a packaging body capable of breaking the packaging material attached to the container along the perforations, a cap shrink label for covering the packaging material from the mouth portion to the neck portion of the container peripheral surface, and the cap shrink label for the packaging material. A shrink wrapping body comprising two pieces of a body shrink label that covers from the neck portion to the bottom portion of the circumferential surface of the overlapping container. 2. The shrink package according to claim 1, wherein the packaging material has a light-shielding property.