JP2017171354A - Package manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a package on which a heat-shrinkable cylindrical label with an opening corresponding to the peripheral edge of a recess of a container is mounted.SOLUTION: A package manufacturing method includes: a first shrinking step in which a heat-shrinkable cylindrical label is externally mounted including a recess 2 on a container 1 with the recess 2, and is thermally shrunk by being heated to be mounted on the container 1; a notching step in which a notch line 5 is formed in an area corresponding to the recess 2, which is included in the post-mounted heat-shrinkable cylindrical label; and a second shrinking step in which at least a surrounding area of the heat-shrinkable cylindrical label on which the notch line 5 has been formed is heated and thermally shrunk again.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a method for manufacturing a package in which an opening is formed in a part of a heat-shrinkable cylindrical label corresponding to a recessed portion of a container.

2. Description of the Related Art Conventionally, packages having a container and a heat-shrinkable cylindrical label, and the heat-shrinkable cylindrical label mounted on the container by heat shrinkage have been widely distributed. As such a package, for example, a bottle-type container filled with a beverage or the like and a heat-shrinkable cylindrical label mounted with heat-shrink can be used. The heat-shrinkable cylindrical label is also called a shrink label or a shrink tube.
Among such containers, there is also known a container in which a recessed portion whose outer surface is recessed inward is formed. Such a dent part can be used as a handle when the container is held by hand, for example.
However, when the heat-shrinkable cylindrical label is mounted including the dent portion of the container, the heat-shrinkable cylindrical label covers the dent portion so as to completely cover the dent portion. It becomes difficult.

In this regard, Patent Document 1 discloses a package in which an opening is formed in a portion corresponding to the dent in the heat-shrinkable cylindrical label so that the dent is not covered with the heat-shrinkable cylindrical label. It is disclosed.
In one method, the package is preliminarily cut out of a part of the heat-shrinkable cylindrical label, and the heat-shrinkable cylindrical label is formed while matching the cutout of the heat-shrinkable cylindrical label with the recess. It is obtained by covering the container and heat shrinking ([0018] of the same document).
In another method, the package is formed by notching a portion of the heat-shrinkable cylindrical label corresponding to the recessed portion after heat-shrinking the heat-shrinkable cylindrical label and attaching it to the container. can get. As a method for cutting out the heat-shrinkable cylindrical label, die cutting, laser cutting, water jet cutting, or the like is used ([0017] of the same document).

In the method of cutting out a part of the heat-shrinkable cylindrical label in advance, it is difficult to externally attach the heat-shrinkable cylindrical label to the container while aligning the cutout with the recessed portion of the container. . Furthermore, in this method, the heat-shrinkable cylindrical label sheathed on the container is heat-shrinked so that the notch is widened and an opening is generated, but the opening is displaced from the recess, or the opening The size becomes much larger than the peripheral edge of the recess, the label edge forming the opening warps outward, or wrinkles or the like occur in the heat-shrinkable cylindrical label. Thus, the heat-shrinkable cylindrical label having an opening larger than the peripheral edge of the dent or the opening of the label edge warps has a poor appearance, and the packaging body on which such a heat-shrinkable cylindrical label is mounted. Cannot be distributed as a product.
Furthermore, in the method of cutting out a part of the heat-shrinkable cylindrical label after being attached to the container, the container may be damaged by a cutter or a laser.

Special table 2003-509293 gazette

A first object of the present invention is to provide a method capable of relatively easily manufacturing a packaging body to which a heat-shrinkable cylindrical label having an opening corresponding to the peripheral edge of a recess of a container is attached.
The second object of the present invention is to provide a method capable of producing a package with a heat-shrinkable cylindrical label having an opening corresponding to the periphery of the recess of the container without substantially damaging the container. Is to provide.

  The manufacturing method of the package of the present invention includes heat-shrinking a cylindrical label on the container by heat-sealing the heat-shrinkable cylindrical label including the recess in a container having a recess. A primary shrinking step for mounting, a cutting step for forming a cutting line in a region corresponding to the recessed portion in the heat-shrinkable cylindrical label after mounting, a heat-shrinkable cylindrical shape after forming the cutting line A secondary shrinking step in which at least the periphery of the score line of the label is heated and contracted again.

In a preferable method for producing a package of the present invention, the cut line is an endless ring, and after removing the portion surrounded by the ring cut line from the heat-shrinkable cylindrical label, the secondary shrinking step is performed. .
A preferable manufacturing method of the package of the present invention corresponds to the indented portion so that when the line corresponding to the periphery of the indented portion is hypothesized on the heat-shrinkable cylindrical label after the mounting, the indented portion does not overlap with the imaginary line. The cut line is formed in a region to be processed.

  According to the method for manufacturing a package of the present invention, it is possible to relatively easily manufacture a package on which a heat-shrinkable cylindrical label having an opening corresponding to the periphery of the recessed portion of the container is mounted.

The front view of a container. The rear view of the container. The right view of the container. The expanded sectional view cut | disconnected by the IV-IV line of FIG. The perspective view of the heat-shrinkable cylindrical label opened to the cylinder shape. The front view which shows the state which coat | covered the heat-shrinkable cylindrical label which concerns on one embodiment in the container in the primary shrinkage | contraction process of 1st Embodiment. The expanded sectional view cut | disconnected by the VII-VII line of FIG. In the primary shrinking step, an enlarged cross-sectional view showing the way in which a heat-shrinkable cylindrical label according to another embodiment is sheathed on a container (the heat-shrinkable cylindrical label and container of another embodiment are shown in FIG. 6 as VII-VII. Cut at the same place as the line). The front view which shows the state which made the heat-shrinkable cylindrical label heat-shrink, and was mounted | worn in the container in a primary shrinkage | contraction process. The expanded sectional view cut | disconnected by the XX line of FIG. The expanded sectional view cut | disconnected by the XI-XI line of FIG. The front view which shows the state which formed the cutting line in the surface of the heat-shrinkable cylindrical label with which it mounted | worn in the cutting process. The front view which shows the state which removed the part enclosed with the cut line. The expanded sectional view cut | disconnected by the XIV-XIV line | wire of FIG. The front view which shows the state after heat-shrinking again the heat-shrinkable cylindrical label after cutting line formation in a secondary shrinkage | contraction process (front view of the package obtained by the manufacturing method of 1st Embodiment). The expanded sectional view cut | disconnected by the XVI-XVI line of FIG. It is a heat-shrinkable cylindrical label used by 2nd Embodiment, Comprising: The front view of the heat-shrinkable cylindrical label folded up flatly. The expanded end view cut | disconnected by the XVIII-XVIII line | wire of FIG. The front view which shows the state which formed the incision line in the surface of the mounted heat-shrinkable cylindrical label in the incision process of 2nd Embodiment. The front view (state of the package obtained by the manufacturing method of a 2nd embodiment) in the secondary contraction process of a 2nd embodiment which shows the state after carrying out the heat contraction of the heat-shrinkable cylindrical label after the cut line formation again. Front view). The expanded sectional view cut | disconnected by the XXI-XXI line of FIG. The front view of the package obtained by the manufacturing method of other embodiment. The expanded sectional view cut | disconnected by the XXIII-XXIII line | wire of FIG. The front view of the package obtained by the manufacturing method of other embodiment. The expanded sectional view cut | disconnected by the XXV-XXV line | wire of FIG.

Hereinafter, the present invention will be specifically described with reference to the drawings.
In the present specification, the “front” of the container refers to the side that can be seen when the container that is self-supporting on a horizontal plane is viewed from any one of the directions orthogonal to the axial direction of the container. The “back” of the container refers to the opposite side. The “front view shape” refers to a shape visually recognized when viewed from the one arbitrary direction. FIG. 1 is a front view of a container as viewed from the side where the entire peripheral surface of one recess is visible.
The numerical range represented by “to” means a numerical range including numerical values before and after “to” as a lower limit value and an upper limit value.
It should be noted that the dimensions, scales and shapes of the parts and members shown in the drawings may be different from the actual ones.

The manufacturing method of the package of the present invention includes a primary shrinking step of heat-shrinking and mounting a heat-shrinkable cylindrical label on a container, a cutting step of forming a cutting line on the heat-shrinkable cylindrical label after mounting, and forming a cutting line And a secondary shrinking step in which the heat-shrinkable cylindrical label is heated again to cause heat shrinkage. The manufacturing method of this invention may have processes other than these processes.
Each of these steps may be performed in series on one production line, or one or more steps selected from the above steps may be performed on one line and the remaining steps may be performed on another one or Two or more lines may be used. Further, all of the steps may be performed by one practitioner, or one or more steps selected from the steps may be performed by one practitioner, and the remaining steps may be performed by another practitioner. The person may go.

<First Embodiment>
[Preparation process]
A package, which is a manufacturing object, includes a container having a dent and a heat-shrinkable cylindrical label that is heat-shrinked. The package may have other members provided that it has a container and a heat-shrinkable cylindrical label. In manufacturing such a package, the container and the heat-shrinkable cylindrical label are prepared.

(container)
The container 1 is not particularly limited as long as it has a recess 2 as shown in FIGS.
The recessed part 2 is a part of the outer shape of the container 1 and refers to a part recessed inward from the surroundings. Regarding the container, the inner side refers to the side approaching the storage space of the container, and the outer side refers to the opposite side.
Specifically, the container 1 includes a main body 11 having a storage space for storing contents, and a spout 12 formed at an end portion of the main body 11. A lid portion 13 for closing 12 is attached. As the lid portion 13, a cap detachably attached to the main body 11 by a screw action is illustrated. However, the lid portion 13 is not limited to a cap that is attached by a screw action. For example, a cap that is fitted to the main body 11, a cap that is attached to the main body 11 by an arbitrary method and opens and closes the spout via a hinge, spray It may be a trigger that can pour out the contents.

The main body 11 has a bottom portion 14 for allowing the container 1 to be self-supporting, and the container 1 can be self-supporting with the bottom portion 14 down as shown in the figure.
The outer shape of the main body 11 is not particularly limited, and is substantially cylindrical, substantially elliptical, substantially polygonal, such as substantially rectangular or triangular, substantially conical, substantially conical, such as substantially conical, or substantially triangular. Or a substantially frustum shape such as a substantially quadrangular frustum shape, a substantially bowl shape, a substantially daruma shape, or a three-dimensional shape in which these shapes are combined. In the present specification, the “substantially” shape means a shape allowed in the technical field to which the present invention belongs. For example, “substantially” added to a polygon such as a square includes a shape in which a corner is chamfered, a shape in which a part of a side is slightly inflated or depressed, and a shape in which a side is slightly curved. . The abbreviations added to the circles and ellipses include a shape in which a part of the arc is inflated or depressed, a shape in which a part of the arc is a straight line or a diagonal line, and the like.
Further, the outer shape of the main body 11 may be a straight body shape or may not be a straight body shape. The straight barrel shape refers to a shape whose circumferential length does not change in the axial direction. The outer shape of the main body 11 in the illustrated example has a substantially elliptic frustum shape except for the recessed portion 2. The upper portion of the main body 11 is an upper reduced diameter portion 111 whose peripheral length becomes smaller as it goes upward, and the lower portion of the main body 11 is a downward contraction whose peripheral length becomes smaller as it goes downward. The diameter portion 112 is formed.

A part of the outer surface of the main body 11 is recessed inward, and the portion is a recessed portion 2. As will be described later, the heat-shrinkable cylindrical label subjected to the primary shrinkage is attached to the container 1 by being in close contact with the outer surface of the main body 11 excluding the recess 2. That is, the recessed portion 2 is a portion of the outer surface of the main body 11 that is not in contact with the heat-shrinkable cylindrical label that has been primarily contracted. Hereinafter, a portion other than the dent portion in the main body 11 may be referred to as an “outing portion” in relation to the dent portion.
Specifically, a part of the outer surface of the main body 11 has a plurality of inflection points that change the direction to the inside, and a range surrounded by the set of the inflection points is a recessed portion 2 that is recessed inward. A collection of infinite number of inflection points is a boundary between the recessed portion 2 and the going-out portion, and constitutes a peripheral edge 2 a of the recessed portion 2. If the dent is compared to a volcano caldera, the set of inflection points corresponds to the outer ring of the caldera.
The peripheral edge 2a (a collection of infinite inflection points) of the recess 2 forms an endless annular line in front view.
The dent part 2 has a peripheral surface 2b that is continuous with the outing part and enters the inside at the peripheral edge 2a. The peripheral surface 2 b is also an outer surface of the recess 2. The peripheral surface 2b has, for example, an inclined surface shape that forms a curved surface that bulges outward or bulges inward, or an inclined surface shape that forms a flat surface.
In the example of illustration, the peripheral surface 2b of the dent part 2 is formed in the inclined shape which comprised the curved surface which swells outside as a whole.

The front-view shape of the recessed portion 2 is not particularly limited, and is substantially circular, substantially elliptical, substantially polygonal, such as substantially rectangular or substantially triangular, substantially daruma, or a combination of these shapes. Is mentioned. In addition, the front view shape of the dent part 2 is a shape of the periphery 2a of the dent part 2 when it sees from the front. In the example of illustration, the front view shape (front view shape of the periphery 2a) of the dent part 2 is made into the substantially elliptical shape.
The formation position of the dent part 2 is not particularly limited, and the dent part 2 may be formed at an appropriate position such as a central part, an upper part, or a lower part of the main body 11 when viewed from the front. In the example of illustration, the recessed part 2 is formed in the upper right part seeing from the front.

The recess 2 is formed in the main body 11 at one place or two or more places. In the primary shrinking step of the production method of the present invention, the heat-shrinkable cylindrical label is attached to the container 1 including the recessed portion 2, but when the container 1 having a plurality of recessed portions 2 is used, 1 is used. In the next shrinking step, the heat-shrinkable cylindrical label may be attached including at least one recess 2. Therefore, in the primary shrinking step, the heat-shrinkable cylindrical label may be attached including one or two of the plurality of indentations 2, or the entire indentation 2 may be included and heated. A shrinkable cylindrical label may be attached.
In the example of illustration, the recessed part 2 is formed in two places. Hereinafter, the one dent part 2 may be referred to as a “first dent part 2”, and the other dent part 2 may be referred to as a “second dent part 2”.

The first dent 21 is formed on the front side of the main body 11, and the second dent 2 is formed on the back side of the main body 11.
For example, the first dent 21 and the second dent 22 are formed at the same position on the front and back surfaces of the container 1, and accordingly, the second dent 22 on the back side of the first dent 21 as viewed from the front. Is located. Moreover, the 1st dent part 21 and the 2nd dent part 22 are formed in the same shape and the same size, for example.
By forming the 1st dent part 21 and the 2nd dent part 22, the side part (right upper part seen from the front) of the main body 11 becomes easy to grasp with a hand. This side portion is a handle portion 15 that can be used as a handle. The handle portion 15 is formed adjacent to the first dent portion 21 and the second dent portion 22.

Each of the first dent portion 21 and the second dent portion 22 may have a bottom surface continuous to the circumferential surface 2b. The bottom surface of the recessed portion 2 refers to a part of the outer surface of the recessed portion 2 located on the innermost side of the recessed portion 2.
In the example of illustration, the 1st dent part 21 and the 2nd dent part 22 do not have a bottom face, but are connected with each other. Therefore, the peripheral surface 2b of the first dent portion 21 and the peripheral surface 2b of the second dent portion 22 are continuous with each other, and a range surrounded by these peripheral surfaces 2b is the hole portion 16. The hole 16 is formed in a size that allows a hand to be inserted. By forming the hole 16, the handle 15 that can be gripped so as to be wrapped by hand is formed.
The handle portion 15 forms a part of the main body 11, and the inside of the handle portion 15 is hollow. Therefore, the inside of the handle portion 15 forms a part of the storage space of the main body 11. However, the handle portion 15 may be solid. The handle portion 15 is not limited to being formed integrally with the main body 11, and a handle portion and a hole portion may be formed by attaching a separate handle portion to the main body (not shown). ).

The contents to be filled in the container 1 are not particularly limited, and beverages such as juice, seasonings such as edible oil and soy sauce, sanitary products such as liquid detergent and refill shampoo, pharmaceuticals such as alcohol for disinfection, cosmetics, etc. Is mentioned. The contents of the contents are not particularly limited as long as they can be taken out of the storage space, and may be liquid (including liquid having a certain degree of viscosity) or granular.
The material of the main body 11 of the container 1 is not particularly limited, and examples thereof include synthetic resin, glass, earthenware, and metal. The synthetic resin container 1 is easily scratched when a cutter or the like comes into contact with it. However, according to the manufacturing method of the present invention, the probability of damaging the main body 11 is extremely low. By applying the present invention, the effect of the present invention becomes more apparent (even if the heat-shrinkable cylindrical label is attached to a body that is inherently easily damaged by a cutter or the like and the label is cut, Can prevent scratches).

When the main body 11 of the container 1 is made of a synthetic resin, the synthetic resin is not particularly limited, but examples thereof include olefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate and polylactic acid; polystyrene resins such as polystyrene. Resin; Polyamide resin; One kind selected from thermoplastic resins such as vinyl chloride resin, or a mixture of two or more kinds. The synthetic resin body 11 may be a non-foamed body or a foamed body. Among these, olefin-based resins such as polyethylene are preferable because they are not easily damaged by a laser.
However, according to the manufacturing method of the present invention, since the probability of damaging the main body 11 is extremely low, the present invention is applied to the container 1 having the main body 11 made of an olefin resin when the cut line is formed by a laser. The effect of the present invention becomes more apparent (even if a heat-shrinkable cylindrical label is attached to a body that is inherently easily damaged by a laser and the label is cut, the body can be prevented from being damaged. ).
The thickness of the main body 11 is not particularly limited. For example, when the main body 11 is made of synthetic resin, the thickness is 0.2 mm to 3 mm.

(Heat-shrinkable cylindrical label)
As shown in FIG. 5, the heat-shrinkable cylindrical label 3 has a label base material 31, and is cylindrical by bonding the first side end portion 31 a and the second side end portion 31 b of the label base material 31. It is the cylindrical body formed in. It should be noted that the heat-shrinkable cylindrical label before heat-shrinking is denoted by “3”, and the heat-shrinkable cylindrical label after heat-shrinking is denoted by “4”.
The heat-shrinkable cylindrical label 3 may be formed in a cylindrical shape before being packaged in a container, or may be formed in a cylindrical shape at the same time as being packaged in a container.
The heat-shrinkable cylindrical label 3 that is formed into a cylindrical shape at the same time as the exterior of the container is partially bonded to the inner surface of the first side end portion 31a of the label base material 31, and the base material is wound around the container. By bonding the inner surface of the second side end portion 31b of the base material to the outer surface of the first side end portion 31a, it is formed into a cylindrical shape (see FIG. 8).
Hereinafter, the heat-shrinkable cylindrical label 3 that is formed in a cylindrical shape before being packaged on the container will be mainly described.

As shown in FIG. 5, the heat-shrinkable cylindrical label 3 before the container is mounted is opened in a cylindrical shape when mounted on the container. However, when the heat-shrinkable cylindrical label 3 is manufactured, it is folded into a flat shape (the state of being folded into a flat shape is not shown).
In a practical manufacturing process, the heat-shrinkable cylindrical label 3 is generally provided in the form of a continuous body in which a plurality of the heat-shrinkable cylindrical labels 3 are continuously connected and folded in a flat shape. Are appropriately cut to obtain individual heat-shrinkable cylindrical labels 3, which are opened into a cylindrical shape immediately before being packaged on a container.

The label base material 31 includes a heat-shrinkable film, and a design print layer, a protective layer, a sliding layer, and the like may be provided on the heat-shrinkable film as necessary.
The heat-shrinkable film is a flexible film and is a film that shrinks in the heat-shrink direction when heated to a heat-shrink temperature. Examples of the heat shrink temperature include 60 ° C to 120 ° C.
Examples of the heat-shrinkable film include a heat-shrinkable synthetic resin film, a heat-shrinkable nonwoven fabric, a heat-shrinkable foamed resin film, and a laminated film thereof. The laminated film may be a laminate of a layer having no heat shrinkability and a layer having heat shrinkability, provided that the whole laminate has heat shrinkability. Preferably, a synthetic resin film or a synthetic resin laminated film is used as the heat-shrinkable film. The heat-shrinkable film may be laminated with a gas such as a metal vapor deposition layer and / or a light barrier layer as necessary.

The material of the synthetic resin film or the synthetic resin laminated film is not particularly limited, and polyester resins such as polyethylene terephthalate and polylactic acid; olefin resins such as polyethylene, polypropylene, and cyclic olefin; polystyrene, styrene-butadiene copolymer, and the like. One type selected from thermoplastic resins such as polystyrene resins, polyamide resins, and vinyl chloride resins, or a mixture of two or more types. The heat-shrinkable synthetic resin film (laminated film) may be composed of one film layer, or may be composed of a plurality of different or different types of film layers.
Although the thickness of the heat-shrinkable film is not particularly limited, for example, a film having a thickness of about 20 μm to 100 μm, further about 20 μm to 80 μm can be used.

As the heat-shrinkable film, a film that mainly heat-shrinks in at least the first direction may be used, and a film that slightly heat-shrinks or heat-extends in the second direction may be used. The first direction means one direction in the plane of the film, and the second direction is a direction orthogonal to the first direction in the plane. When the label base material 31 is formed into a cylindrical shape (that is, when the heat-shrinkable cylindrical label 3 is formed using the label base material 31), the first direction of the heat-shrinkable film is the heat-shrinkable cylindrical label. 3 circumferential direction. As such a heat-shrinkable film, a uniaxially stretched or biaxially stretched film mainly stretched in the first direction can be used.
The heat shrinkage rate in the first direction (heat shrink direction) of the heat shrinkable film is not particularly limited, but is preferably 40% or more, more preferably 50% or more, and further preferably 60% or more. . The larger the heat shrinkage rate in the first direction, the better. However, since there is a limit to it, the heat shrinkage rate in the first direction is theoretically less than 100%, but usually 90% or less. It is. When the heat-shrinkable film is a film that changes heat in the second direction, the heat shrinkage rate in the second direction is, for example, −3 to 25%, preferably 1 to 20%. The minus of the thermal contraction rate means thermal elongation.
However, the heat shrinkage ratio is a ratio of the length of the film before heating (original length) and the length of the film after immersion in warm water at 100 ° C. for 10 seconds (length after immersion). Substituting into the following formula.
Thermal contraction rate (%) = [{(original length in first direction or second direction) − (length after immersion in first direction or second direction)} / (first direction or second direction Original length)] × 100.

In addition, the design printing layer (design printing layer not shown) provided as needed is laminated | stacked on the inner surface or / and outer surface of the said heat-shrinkable film. The heat-shrinkable film may be either transparent or non-transparent, but the inner surface side of the film (the inner surface of the heat-shrinkable film is a surface that becomes the inner side when the label substrate 31 is formed into a cylindrical shape, When the design printing layer is provided on the outer surface of the heat-shrinkable film), a film having excellent transparency is used. In the present specification, transparent (colorless transparent or colored transparent) refers to a case where the total light transmittance is 70% or more, preferably 80% or more, more preferably 90% or more. However, the total light transmittance refers to a value measured by a measurement method based on JIS K 7361 (a test method for the total light transmittance of a plastic-transparent material).
Even in the case where such a design print layer or the like is provided on the heat-shrinkable film, the label base 31 is mainly formed in the first direction (the circumferential direction of the heat-shrinkable cylindrical label 3) by the shrinkage force of the heat-shrinkable film. ) Heat shrink.
Furthermore, the heat-shrinkable cylindrical label 3 may be added with a known structure such as a perforation line for cutting (not shown) as necessary.

The label base material 31 is rolled into a cylindrical shape so that the first direction (heat shrinkage direction) of the label base material 31 is the circumferential direction, and the first side end portion 31a is overlapped with the second side end portion 31b. The heat-shrinkable cylindrical label 3 is configured by bonding to form the seal portion 31c. The seal portion 31 c extends in a strip shape in the axial direction of the heat-shrinkable cylindrical label 3.
The bonding method of the first side end portion 31a and the second side end portion 31b is not particularly limited, and examples thereof include welding using a solvent and bonding using an adhesive.
The circumference of the heat-shrinkable cylindrical label 3 is, for example, more than the maximum circumference x 1 times of the portion to which the container is attached x 1 x 1.5 times, preferably x 1 x 1.01 to x 1 .Times.3, more preferably the same x1.02 times to the same x1.15 times. The part to which the container is attached refers to a part of the container where the heat-shrinkable cylindrical label 3 is attached by heat shrinkage.

[Primary contraction process]
In the primary shrinking step, the heat-shrinkable cylindrical label 3 including the recess 2 of the container 1 is sheathed and heated, and the heat-shrinkable cylindrical label 3 is heat-shrinked and attached to the container 1. It is a process.
Specifically, as shown in FIGS. 6 and 7, a heat-shrinkable cylindrical label 3 formed in a cylindrical shape is placed on the outside of the attachment site of the container 1. At this time, the heat-shrinkable cylindrical label 3 is covered so that the first dent 21 and the second dent 22 of the container 1 are covered with the heat-shrinkable cylindrical label 3 when viewed from the front and the back. The attachment site of the container 1 is not particularly limited as long as it includes at least one recess 2. For example, as shown in the figure, the mounted portion includes a first dent portion 21 and a second dent portion 22, and most of the main body 11 including an upper reduced diameter portion 111 and a lower reduced diameter portion 112. Can be mentioned.
The heat-shrinkable cylindrical label 3 that is larger than the maximum diameter of the mounted portion of the container 1 is not mounted on the container 1 when the container 1 is packaged. That is, the heat-shrinkable cylindrical label 3 can be displaced with respect to the container 1 at the time of exterior packaging.
In addition, when using the heat-shrinkable cylindrical label that is formed into a cylindrical shape at the same time as the exterior of the container, as shown in FIG. 8, the first side end portion 31a of the label base 31 is formed on the outer surface of the container 1. The inner surface is bonded using an adhesive or the like, the label base material 31 is wound in the circumferential direction of the container 1, and the inner surface of the second side end 31b is bonded to the outer surface of the first side end 31a using an adhesive or the like. By doing so, the heat-shrinkable cylindrical label 3 can be packaged on the container 1.

Next, the heat-shrinkable cylindrical label 3 is heated to heat-shrink the heat-shrinkable cylindrical label 3. The heat-shrinkable cylindrical label 3 is reduced in diameter by heat shrinkage and is in close contact with the main body 11 of the container 1 (see FIGS. 9 to 11). In the illustrated example, the heat-shrinkable cylindrical label 4 after heat shrinkage is provided on the main body 11 including the upper diameter-reduced portion 111 and the lower diameter-reduced portion 112 except for the outer surfaces of the first recessed portion 21 and the second recessed portion 22. Close contact with the outing part. The heat-shrinkable cylindrical label 4 that has been heat-shrinked is prevented from being inadvertently displaced with respect to the container 1.
However, due to the nature of the heat-shrinkable cylindrical label 4 that mainly shrinks largely in the circumferential direction, the heat-shrinkable cylindrical label 4 substantially adheres closely to the peripheral edge 2a of the recess 2 but is recessed inward from the peripheral edge 2a. It does not substantially adhere to the outer surface (circumferential surface 2 b) of the recessed portion 2. Therefore, in the heat-shrinkable cylindrical label 4, the region X corresponding to the recessed portion 2 is separated from the main body 11. Since the first dent portion 21 and the second dent portion 22 are formed in the main body 11, the region X and the second dent portion corresponding to the first dent portion 21 in the heat-shrinkable cylindrical label 4 after mounting. A region X corresponding to 22 is separated from the main body 11. Hereinafter, an area corresponding to the dent part 2 is referred to as a “dent part corresponding area”, and when it is necessary to distinguish the areas corresponding to the first dent part 21 and the second dent part 22, respectively, It is referred to as “corresponding region” and “second dent corresponding region”. In FIGS. 9 and 12, in order to illustrate the dent corresponding region easily, innumerable dots are added to the dent corresponding region for convenience.
As shown in FIGS. 10 and 11, a cavity is formed between the recess corresponding region X and the recess 2.

In the primary shrinking step, the heating temperature for the heat-shrinkable cylindrical label 3 can be set at a predetermined temperature, and is, for example, 60 ° C. to 120 ° C., preferably based on the outer surface of the heat-shrinkable cylindrical label 3. Is 80 ° C to 110 ° C. The heating means is not particularly limited, and examples thereof include steam and hot air of about 100 ° C to 250 ° C. As other heating means, heating using irradiation of active energy rays such as radiation, ultraviolet rays and infrared rays may be used.
In the primary shrinking step, at least the recess corresponding region X of the heat-shrinkable cylindrical label 4 is not thermally contracted to the shrinkage limit, and preferably extends in the circumferential direction including at least the recess corresponding region X. The band-shaped region Y is not thermally contracted to the contraction limit, and more preferably, the entire heat-shrinkable cylindrical label 4 is not thermally contracted to the contraction limit. In addition, the strip | belt-shaped area | region Y extended in the circumferential direction has comprised the strip | belt ring in the heat-shrinkable cylindrical label currently formed in the cylinder shape. (Hereinafter, the belt-like region extending in the circumferential direction is referred to as “circumferential belt-like region.” The shrinkage limit means that the heat-shrinkable cylindrical label 4 is not further heat-shrinked by heating to a predetermined temperature. For example, the heat-shrinkable cylindrical label 4 having a heat shrinkage rate of 40% in the circumferential direction at 100 ° C. is the shrinkage limit when heated to 100 ° C. and 40% heat shrinkage. Is a heat-shrinkable state, except that the heat-shrinkable cylindrical label 4 attached to the container 1 has the container 1 on the inside thereof, so that the heat-shrinkable state is This means that when the subsequent heat-shrinkable cylindrical label 4 is removed from the container 1 and heated to a predetermined temperature, it can still be heat-shrinked.
For example, when the heat shrinkable region (such as the dent portion corresponding region X or the circumferential band region Y) is heated to a predetermined temperature (for example, 100 ° C.), the heat shrinkage rate is 10% or more in the circumferential direction. Heat shrinkable, preferably heat shrinkable at a heat shrinkage rate of 20% or more. Further, the region that is in a state capable of thermal contraction may be thermally contracted at a thermal contraction rate of about 0.5% to 10% in the axial direction when heated to a predetermined temperature (for example, 100 ° C., for example). preferable.

[Cutting process]
A cutting process is a process of forming a cutting line in the recessed part corresponding | compatible area | region X among the heat-shrinkable cylindrical labels 4 after mounting | wearing with the container 1 in the said primary shrinking process.
The cut line is a line that penetrates the inner and outer surfaces of the heat-shrinkable cylindrical label 4 and partially cuts the heat-shrinkable cylindrical label 4.
The cutting line forming means is not particularly limited, and examples thereof include a melt cutting apparatus such as a laser, a mechanical cutting apparatus such as a die cut, a cutter, and a water jet, and a cutting line having a desired shape can be easily formed at a desired position. Since it can be performed, it is preferable to use a laser.
The type of laser is not particularly limited as long as it can cut the heat-shrinkable cylindrical label 4, and examples thereof include a carbon dioxide gas laser, a YAG laser, and a YVO ₄ laser. In particular, a carbon dioxide laser is preferable because it is suitable for cutting a heat-shrinkable film containing a polyester-based resin. The wavelength of the carbon dioxide laser is not particularly limited, and examples thereof include those having a wavelength of 9.4 μm or 10.6 μm. Among these, a carbon dioxide laser having a wavelength of 10.6 μm is preferable.

The cut line 5 is formed in the plane of the recess corresponding region X as shown in FIG. Preferably, the cut line 5 is formed in each of the first dent corresponding region and the second dent corresponding region.
Further, when a line corresponding to the peripheral edge 2a of the recessed portion 2 is assumed on the heat-shrinkable cylindrical label 4 after the container is mounted, the cut line 5 is formed so as not to overlap the virtual line Z. Form in the plane of. The phrase “not overlapping with the virtual line Z” means that part or all of the cut line 5 does not coincide with the virtual line, or part of the cut line 5 does not intersect the virtual line. Therefore, the cut line 5 is away from the virtual line Z. The imaginary line Z is an imaginary line obtained by imitating the peripheral edge 2a of the recess 2 in contact with the inside of the surface of the heat-shrinkable cylindrical label 4 attached to the container 1 in the primary shrinking process. is there. Therefore, in FIG. 12, the broken line (hidden line) illustrating the peripheral edge 2a of the recess 2 is also the imaginary line Z.
As described above, since there is a cavity between the dent corresponding region X and the dent 2, the cutting line 5 is formed by the cutting device so as not to overlap the imaginary line Z. It is difficult for a laser or the like to come into contact with the outer surface of the recess 2, and the container 1 can be prevented from being damaged by the cutting device.

The front view shape of the cut line 5 is not particularly limited. For example, an endless annular shape, one linear shape having both end portions, or two or more linear shapes having both end portions are intermittent as shown in the illustrated example. Examples of the shape are continuous.
In the illustrated example, the cut line 5 is formed in a substantially elliptical shape in front view, similar to the shape in front view of the recess 2. When the endless cut line 5 is formed in this way, the portion surrounded by the ring cut line 5 is separated from the heat-shrinkable cylindrical label 4 and is removed. The state after removal is shown in FIGS.
As described above, it is preferable to form the cut line 5 away from the virtual line Z. However, if the cut line 5 is too far away, the cutting edge of the cut line 5 greatly expands in the circumferential direction in the secondary contraction process described later. There is a possibility that the opening portion caused by this may be too far from the peripheral edge 2a of the recessed portion 2, and if it is too close, the peripheral edge 2a of the recessed portion 2 of the main body 11 may be damaged by a cutting device such as a laser. From this point of view, the cut line 5 is formed so that the left cut edge 51 and the right cut edge 52 of the cut line 5 are independently located within a range of 5 mm to 15 mm away from the virtual line Z. Is preferred. However, the heat-shrinkable cylindrical label 4 has a vertical direction (the vertical direction of the heat-shrinkable cylindrical label 4 is the second direction of the heat-shrinkable film and is orthogonal to the circumferential direction of the heat-shrinkable cylindrical label 4. In the secondary shrinking step described later, the cutting edge of the cut line 5 does not extend much in the vertical direction. Therefore, the cut line 5 is formed so that the upper cut edge 53 and the lower cut edge 54 of the cut line 5 are independently located within a range of 2 mm to 5 mm away from the virtual line Z. It is preferable.

[Secondary shrinkage process]
The secondary shrinkage step is a step in which at least the periphery of the cut line 5 of the heat-shrinkable cylindrical label 4 after forming the cut line 5 is heated and thermally contracted again.
When the heat-shrinkable cylindrical label 4 is secondarily shrunk, at least the indented portion corresponding region X is heat-shrinked in the circumferential direction, and the cutting edge generated in the surface of the heat-shrinkable cylindrical label 4 due to the formation of the cut line 5 51 and 52 extend mainly in the circumferential direction (left and right sides), and as shown in FIGS. 15 and 16, an opening 6 is formed.

Specifically, in the primary shrinking process, the heat-shrinkable cylindrical label 4 attached to the container 1 by heat shrinkage is regulated by the container 1, and therefore, usually does not heat shrink even if it is further heated. In this regard, by forming the cut line 5 in the surface of the heat-shrinkable cylindrical label 4, the restriction of the container 1 is released at the location divided by the cut line 5. Further, as described above, in the primary shrinking process, at least the recess corresponding region X has not reached the shrinkage limit, and further heating causes at least this region (around the cut line 5) to be mainly in the circumferential direction. Heat shrinks. At least the dent portion corresponding region X is thermally contracted mainly in the circumferential direction by heating, whereby the left cut edge 51 and the right cut edge 52 generated by the formation of the cut line 5 are separated from each other, and the first dent portion is formed. Openings 6 respectively corresponding to the 21 and the second recess 22 are formed. In particular, since the recessed portion corresponding region X is separated from the main body 11, the periphery of the cut line 5 is not in contact with the outer surface of the container 1, so that the heat shrinks smoothly.
What is necessary is just to heat at least the periphery of the cut line 5 (that is, at least the recess-corresponding region X) of the mounted heat-shrinkable cylindrical label 4, for example, even if the heat-shrinkable cylindrical label 4 is heated as a whole Alternatively, the entire circumferential belt-like region Y may be heated in a spot manner, or the periphery of the cut line 5 in the circumferential belt-like region Y may be mainly heated in a spot manner. Preferably, the entire circumferential belt-like region Y or the periphery of the cut line 5 is heated in a spot manner.
The heating temperature in the secondary contraction process may be the same as the heating temperature in the primary contraction process, or may be higher or lower than that.

In the secondary shrinkage step, the heating temperature and the heating time are appropriately set in consideration of the distance to the imaginary line of the cutting edge, the thermal shrinkage rate of the heat-shrinkable cylindrical label 4, etc. As shown, an opening 6 substantially along the peripheral edge 2a of the recess 2 of the container 1 can be formed. The opening 6 is a range surrounded by the end of the label edge 39 in the plane of the heat-shrinkable cylindrical label 4. The end 391 of the label edge 39 corresponds to the cutting edges 51, 52, 53, 54 of the enlarged cut line 5. In the illustrated example, the end of the label edge 39 extends slightly beyond the peripheral edge 2a of the recess 2 toward the peripheral surface 2b of the recess 2, and therefore the label edge 39 is recessed when viewed from the front. It overlaps with the peripheral surface 2 b of the part 2. The overlapping degree is, for example, about 1 mm to 5 mm.
In the illustrated example, the case where heat shrinkage is performed so as to form the opening 6 substantially along the peripheral edge 2a of the recess 2 of the container 1 is illustrated, but the present invention is not limited to this. By appropriately setting the heating temperature and the heating time, the end 391 of the label edge 39 can be substantially overlapped with the peripheral edge 2 a of the recess 2, or the end 391 of the label edge 39 is of the recess 2. It can also be made to overlap the going-out part slightly beyond the peripheral edge 2a.

In the conventional method in which a notch is formed in a part of the heat-shrinkable cylindrical label in advance, and the notch is packaged on the container to heat-shrink the entire heat-shrinkable cylindrical label at once, the notch is removed from the container. It is difficult to coat the heat-shrinkable cylindrical label on the container while aligning with the recess. Furthermore, even if the heat-shrinkable cylindrical label can be externally mounted on the container so that the notch fits into the recess, the circumferential belt-like region including the notch relatively heat-shrinks while generating an opening and heat shrinks. Since the upper and lower parts of the adhesive cylindrical label also thermally contract, the opening does not correspond to the periphery of the recessed part, and the opening is greatly displaced with respect to the recessed part, or the heat-shrinkable cylindrical form It causes poor appearance such as distortion of the upper or lower part of the label. In practice, it is very difficult to control the contraction so that such a problem does not occur.
According to the present invention, since the heat-shrinkable cylindrical label 4 is first heat-shrink mounted on the container 1, the heat-shrinkable cylindrical label 4 is positioned with respect to the container 1. Therefore, when the cut line 5 is subsequently formed and the heat-shrinkable cylindrical label 4 is heated, the periphery of the cut line 5 mainly heat-shrinks, and the others do not substantially heat-shrink. The upper part and the lower part of the label 4 are not distorted or displaced. Furthermore, since the periphery of the cut line 5 is mainly thermally contracted, the contraction control is easy. Therefore, the heating time and the heating time can be easily set so that the heating is stopped when the cutting line of the cutting line 5 extends to the peripheral edge 2a of the recessed portion 2, and a package can be obtained.
According to the manufacturing method of the present invention, a package on which the heat-shrinkable cylindrical label 4 having the opening 6 corresponding to the peripheral edge 2a of the recess 2 of the container 1 can be manufactured relatively easily.

As shown in FIGS. 15 and 16, the obtained package 10 has a container 1 having a recess 2 and a heat-shrinkable cylindrical label 4, and the heat-shrinkable cylindrical label 4 is the container 1. It is fitted with heat shrink. An opening 6 corresponding to the recess 2 is formed in the surface of the heat-shrinkable cylindrical label 4, and a label edge 39 forming the opening 6 is substantially along the peripheral edge 2 a of the recess 2. ing.
Such a package 10 is preferable also in appearance. Moreover, since a hand can be put in the hole 16 between the 1st dent part 21 and the 2nd dent part 22 and the handle part 15 can be gripped through the opening part 6, the package 10 can be conveyed easily. Furthermore, since the label edge part 39 which forms the opening part 6 is substantially along the peripheral edge 2a of the recessed part 2, the user who grasped the handle part 15 does not have a sense of incongruity.

  The manufacturing method of the package of this invention is not restricted to the said 1st Embodiment, It can change variously in the range which this invention intends. Hereinafter, other embodiments will be described. In the description, configurations and effects different from those in the first embodiment will be mainly described. Terms and symbols similar to those in the first embodiment will be used. It may be used as it is, and description of the configuration may be omitted.

Second Embodiment
2nd Embodiment uses the heat-shrinkable cylindrical label comprised from the label base material which has an internal-external shrinkage difference.
The label base material used in the second embodiment is more easily thermally shrunk on the inner side than on the outer side. Having an internal / external shrinkage difference (inner side is easily heat-shrinkable) means that, for example, when a flat label base material is immersed in warm water at 100 ° C. for 10 seconds, it shrinks while curving inward. . The label base material having such an internal / external shrinkage difference may have the entire internal / external shrinkage difference, or at least a part thereof may have an internal / external shrinkage difference.
In the case where a label substrate having a difference in shrinkage between the inside and outside is used, a label base having at least a difference in shrinkage between inside and outside when the heat-shrinkable cylindrical label is attached to the container. A material is used.
(1) Use a heat-shrinkable film having a difference in internal and external shrinkage. (2) Provide a shrinkage inhibiting layer on the outer surface of a heat-shrinkable film that does not have a difference in internal and external shrinkage (however, The shrinkage-inhibiting layer does not completely inhibit heat-shrinkage, but slightly makes it difficult for heat-shrinkage (hereinafter, the same), (3) a shrinkage-inhibiting layer on the outer surface of the heat-shrinkable film having a difference between inside and outside shrinkage. And so on.

  As the label substrate of (1), for example, (a) a heat-shrinkable film is a synthetic resin laminated film in which two film layers are laminated, and the inner film layer is more than the outer film layer. When using a synthetic resin laminated film having a large heat shrinkage ratio, (b) a synthetic resin laminated film in which three or more film layers are laminated as a heat shrinkable film, of which the innermost film layer is the outermost film layer. When using a synthetic resin laminated film having a larger thermal shrinkage rate than the film layer, the thermal shrinkage rate of the intermediate film layer is not less than the thermal shrinkage rate of the outermost film layer and not more than the thermal shrinkage rate of the innermost film layer, Etc. The label base material (1) is generally a label base material that has a difference in shrinkage between inside and outside.

As the label substrate of (2), for example, (c) when a shrinkage inhibiting layer that inhibits heat shrinkage of the heat shrinkable film is provided only on the outer surface of the heat shrinkable film, (d) A first shrinkage inhibition layer that inhibits heat shrinkage of the heat shrinkable film is provided on the outer surface, and a second shrinkage inhibition layer that inhibits heat shrinkage of the heat shrinkable film is provided on the inner surface of the heat shrinkable film, When the degree of inhibition of heat shrinkage is larger than that of the second shrinkage inhibition layer, etc. In (2)-(c), a shrinkage inhibiting layer is provided on a part of the outer surface of the heat-shrinkable film. In (2)-(d), the outer surface of the heat-shrinkable film is provided. By providing the first shrinkage inhibition layer in a part and providing the second shrinkage inhibition layer on the inner surface corresponding to the first shrinkage inhibition layer, a part of the label base material 31 has a difference in inner and outer shrinkage. When the shrinkage inhibition layer is provided on the whole, the whole becomes the label substrate 31 having a difference in shrinkage between inside and outside. Each shrinkage inhibition layer may be a single layer or may be composed of two or more layers.
As the label substrate of (3), the shrinkage-inhibiting layer of (2)-(c) or (d) is provided on the heat-shrinkable film exemplified in (1)-(a) or (b). And so on.
The label base materials of the above (2) and (3) can also be used as a label base material having an internal / external shrinkage difference, or a part thereof can be a label base material having an internal / external shrinkage difference.
The label base material of (2) is preferred because the difference between the inner and outer shrinkage can be easily given, and in particular, the inner and outer shrinkage difference can be easily given to the region to be the label edge.

Examples of the shrinkage inhibition layer include the above-described design printing layer, protective layer, and other arbitrary resin layers. These layers may be used alone or in a laminate of two or more layers. Each of these layers is a layer solidified by a resin component, and usually the layer itself does not have heat shrinkability. Therefore, these layers slightly inhibit the heat shrinkage of the heat shrinkable film. The thicknesses of these layers can be set as appropriate, but are independently, for example, 0.5 μm to 10 μm, and preferably 1 μm to 5 μm.
The resin component of the shrinkage inhibition layer is not particularly limited, and for example, a resin component used in a conventionally known printing ink can be used. Examples of the resin component include urethane resins, acrylic resins, polyvinyl chloride resins, polyvinyl acetate resins, polyamide resins, polyester resins, and cellulose resins. Among these, urethane resin or acrylic resin is preferable.
The degree of the inner / outer shrinkage difference can be adjusted by appropriately setting the hardness and thickness of the shrinkage inhibition layer. When a relatively thick and / or hard shrinkage inhibiting layer is provided on the outer surface of the heat-shrinkable film, the inner side is more likely to heat shrink than the outer side. Further, even when a shrinkage inhibiting layer is provided on each of the inner and outer surfaces of the heat-shrinkable film, the thickness of the shrinkage inhibiting layer on the outer surface side is made larger than the thickness of the shrinkage inhibiting layer on the inner surface side, and / or By using a material harder than the resin component of the inner surface side shrinkage inhibiting layer as the resin component of the inner side shrinkage inhibiting layer, an inner and outer shrinkage difference can be imparted.

For example, as shown in FIG. 17, the heat-shrinkable cylindrical label 3 of the second embodiment has a label having a difference in inner and outer shrinkage in a region serving as a label edge forming an opening and a region surrounded by the label edge. The substrate 31 is constituted. FIG. 17 shows the heat-shrinkable cylindrical label 3 that has been flattened before being mounted on the container.
For example, as shown in FIG. 18, the label base material 31 having an inner and outer shrinkage difference in such a region includes a region serving as a label edge portion forming an opening on the outer surface of the heat-shrinkable film 32 and its label. A transparent resin layer 33 is provided in a region surrounded by the edge, and a design print layer 34 is provided in addition to a region corresponding to the region in which the resin layer 33 is provided on the inner surface of the heat-shrinkable film 32. ing. In addition, it is preferable that a shrinkage-inhibiting layer such as a resin layer or a design print layer is not provided in a region other than the region where the resin layer 33 is provided on the outer surface of the heat-shrinkable film 32 (in other words, It is preferable that the outer surface of the heat-shrinkable film 32 is exposed in a region other than the region where the resin layer 33 is provided. The resin layer 33 is formed, for example, by applying a transparent resin material (for example, a medium ink not containing a colorant) to the outer surface of the heat-shrinkable film by a known printing method or the like. The design printing layer 34 can be formed of a colored ink by a known printing method or the like. In the case of this example, a resin layer 33 that is a shrinkage inhibiting layer is provided in the region that becomes the label edge 39 that forms the opening 6 in the outer surface of the heat-shrinkable film 32, and the inner surface corresponding to the region is provided on the inner surface. Since the shrinkage inhibition layer is not provided, there is a difference in shrinkage between the inside and outside in the region that becomes the label edge forming the opening. In this example, the label edge is transparent.

In 2nd Embodiment, the package 10 can be manufactured like the said 1st Embodiment except using the heat-shrinkable cylindrical label which has the said inner and outer shrinkage difference.
Briefly, the container 1 and the heat-shrinkable cylindrical label 3 having the difference between the inner and outer shrinkage are prepared, and the heat-shrinkable cylindrical label 3 is heat-shrink mounted on the container 1 in the primary shrinking process. Next, in the incision step, as shown in FIG. 19, the incision line 5 is formed in the region having the inner and outer contraction difference and in the region corresponding to the recess. In FIG. 19, the shaded area is added to the area having the inner and outer shrinkage difference, and countless dots are added to the depression corresponding area. In the case of the heat-shrinkable cylindrical label shown in FIG. 18, the region where the resin layer 33 is provided is a region having a difference in inner and outer shrinkage.
In the secondary shrinking step, the circumferential belt-like region of the heat-shrinkable cylindrical label 4 attached to the container 1 is heat-shrinked. At the time of secondary contraction, the cutting edge of the cut line 5 expands and an opening 6 is generated. However, in this embodiment, at least the region that becomes the label edge has a difference in contraction between the inside and the outside. As shown in FIGS. 20 and 21, the package 10 is obtained in which the label edge 39 that forms the opening 6 enters the recess 2.

In the package 10 obtained in the present embodiment, the label edge 39 is bent inward and enters the recess 2. Therefore, the end 391 of the label edge 39 is located on the inner side of the peripheral edge 2 a of the recess 2. Note that the term “bent” includes a case where it is bent and a case where it is bent. Preferably, the label edge 39 is bent along the peripheral surface 2 b of the recess 2, and more preferably, at least the left end and the right end of the label edge 39 are on the peripheral surface 2 b of the recess 2. It touches.
20 and 21 illustrate the package 10 on which the heat-shrinkable cylindrical label made of the label base material 31 shown in FIG. 18 is mounted. Therefore, a resin layer is provided on the outer surface of the label edge 39 in the heat-shrinkable film, and a design printing layer is provided on the inner surface of the heat-shrinkable film excluding the label edge 39. However, in FIG. 21, the design print layer is not shown.
Since the label edge part 39 which forms the opening part 6 is bent inside, the label edge part 39 is not conspicuous and the external appearance is also favorable. In addition, since the label edge 39 is bent and enters the recess 2, when the user grips the handle 15 of the package 10 with his / her hand, the label edge 39 easily fits into the hand. Since the end 391 is difficult to hit the palm, the user does not feel uncomfortable. In particular, when at least the left end and the right end of the label edge 39 are in contact with the peripheral surface 2b of the recess 2, it is possible to reliably prevent the end 391 of the label edge 39 from hitting the palm.

<Other embodiments>
In the said 1st and 2nd embodiment, although the container 1 by which the hole 16 was penetrated between the 1st dent part 21 and the 2nd dent part 22 was illustrated, as shown, for example in FIG.22 and FIG.23 The package 10 may be manufactured by attaching a heat-shrinkable cylindrical label to the container 1 in which the first dent 21 and the second dent 22 having the bottom surface 2c are formed. Thus, also in the 1st dent part 21 and the 2nd dent part 22 which have the bottom face 2c, the handle part 15 is formed adjacent to it.
In addition, the present invention is not limited to the container 1 having the handle portion 15, and, for example, as shown in FIGS. 24 and 25, the container 1 having no handle portion 15 and having the recessed portion 2 is provided with a heat-shrinkable cylinder. The package 10 may be manufactured by attaching a label.
22 to 25 show the packaging body 10 (the packaging body in which the label edge 39 is bent inward) obtained by the production method of the second embodiment, the production method of the first embodiment is used. May be.

DESCRIPTION OF SYMBOLS 1 Container 2 Recessed part 2a Periphery of a recessed part 3 Heat-shrinkable cylindrical label before heat shrinkage 5 Cut line 6 Opening part 10 Packaging body Z Virtual line

Special table 2003-509298 gazette

Claims (3)

A primary shrinking step in which the heat-shrinkable cylindrical label is heat-shrinked and attached to the container by covering and heating the heat-shrinkable tubular label including the dent in a container having a dent,
A cutting step for forming a cutting line in a region corresponding to the recessed portion of the heat-shrinkable cylindrical label after the mounting,
A method for producing a package, comprising: a secondary shrinking step in which at least the periphery of the cut line of the heat-shrinkable cylindrical label after the cut line is formed is heated and contracted again.   The manufacturing method of the package of Claim 1 which performs the said secondary shrinkage | contraction process, after removing the part enclosed by the said cyclic | annular cut line from the heat-shrinkable cylindrical label, and the said cut line is an endless cyclic | annular form.   When imagining a line corresponding to the periphery of the dent in the heat-shrinkable cylindrical label after the mounting, the cut line is formed in a region corresponding to the dent so as not to overlap the imaginary line. The manufacturing method of the package of Claim 1 or 2.

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