JP2004067117A - Over-wrapped body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an over-wrapped body, which can certainly prevent the transfer of a print layer formed on the interior of a wrapper to a flange of a container body. <P>SOLUTION: An instant ramen (Chinese noodles) or the like is put in a cup-shaped container 10 to make an in-cup instant ramen 2 (an article to be wrapped), which is over-wrapped with the wrapper 3 made of a shrink film. On almost the entire exterior of the wrapper 3, a gravure is formed so that the name and characteristic patterns of the article 2 are displayed on the top face or circumference thereof. The cup-shaped container 10 comprises the cup-shaped container body 11 having the flange 12 extending radially outward from the upper end ridge of the container body, and a sheet-like lid member 13 which is stuck on the upper surface of the flange 12 by heat sealing to close an upper end opening of the container body 11. The outer diameter of the lid member 13 is made larger than that of the flange 12 by 1 mm. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an overlap package in which a package such as an instant noodle with a cup or an instant udon with a cup is overlap-wrapped using a packaging material made of a shrink film.
[0002]
[Prior art]
Conventionally, for products with cups such as instant noodles with cups and instant noodles with cups, the design or product name etc. must be added in advance to a cup-shaped or bowl-shaped container body or a sheet-shaped lid member that closes the mouth of the container body. It is sold in a state where it is printed, the contents are stored in a container body, the mouth is closed with a lid member, and then overlap packaging is performed using a packaging material formed of a transparent shrink film.
[0003]
However, compared to the case of printing a design or the like on the container body or the lid member, the printed portion is more clearly finished when the design or product name is printed on the packaging material itself formed by the shrink film for applying the overlap packaging. In addition, when closing the mouth of the container body with the lid member, it is not necessary to consider the alignment of the printed portion of the container body with the printed portion of the lid member. Without printing, it is desired to apply overlap packaging using a packaging material on which the design, product name, etc. are pre-printed. Overlap packaging has come to be performed using a packaging material on which a characteristic pattern, background, and the like are printed.
[0004]
[Problems to be solved by the invention]
By the way, the sheet-shaped lid member for closing the mouth of the container body is usually set to the same diameter as the outer diameter of the flange portion in the container body, except for the knob portion, and the periphery of the flange portion and the lid member are closed. The lid member is heat-sealed to the upper surface of the flange portion in a state where both are aligned so that the peripheral edges coincide with each other, but it is difficult to accurately position the lid member with respect to the flange portion, Since it is inevitable that a gap of about 0.5 mm will occur, manufactured cup-filled products have the lid member heat-sealed to the upper surface of the flange with the upper surface of the flange partially exposed. It is the present situation that many exist.
[0005]
In addition, the packaging material for the overlap packaging is melt-sealed when wrapping the packaged product such as a cup-filled product. The printed layer formed on the film surface (the wetting index is about 32 [mN / m] or less) where the inner surface is not subjected to the corona discharge treatment and the corona discharge treatment is not performed is basically easy to peel off. Has properties.
[0006]
In addition, in order to increase the adhesion strength of the printing ink to the film surface not subjected to the corona discharge treatment, a specific printing ink containing a binder such as chlorinated polypropylene must be used. The ink enhances the adhesion performance to the film surface due to the adhesiveness of the binder, etc., and when the printing layer formed by such a printing ink comes into contact with another object, the adhesion performance causes the printing layer to adhere to the other object. Also have the property of easily adhering. In addition, since the container body is manufactured by molding a foamed polystyrene sheet having heat insulating properties and punching the outer periphery of the flange portion with a cutting tool or the like, the outer peripheral edge (corner portion) of the flange portion tends to have a fine jagged shape. .
[0007]
Therefore, as described above, a printed layer is formed on substantially the entire inner surface of a cup-filled product in which the lid member is heat-sealed on the upper surface of the flange portion with the upper surface of the flange portion of the container body partially exposed. When overlapping packaging is performed using the packaging material, when the packaging material wrapping the cup-containing product is heated and shrunk, the jagged upper corner of the flange part whose upper surface is exposed is formed on the inner surface of the packaging material The packaging material moves to the top side or the peripheral side of the cupped product in a state in which it has penetrated the printed layer that is easily peeled or adhered. It may be peeled off and transferred to the upper end corner of the flange portion of the container body, which is a portion to which a mouth is made when drinking soup or soup, which is not preferable in terms of hygiene and appearance.
[0008]
Accordingly, an object of the present invention is to provide an overlap package that can reliably prevent a printing layer formed on an inner surface of a packaging material from being transferred to a flange portion of a container body.
[0009]
Means for Solving the Problems and Their Effects
In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a state in which the contents are accommodated in a cup-shaped or bowl-shaped container body having a flange portion projecting radially outward at an upper end portion. In an overlap package in which a package to which a sheet-like lid member is fixed on an upper surface is wrapped with a packaging material made of a shrink film having a printed layer formed on substantially the entire inner surface and overlap packaging is performed, When fixing the member to the flange portion of the container body, even if the lid member is displaced with respect to the flange portion, the outer diameter of the lid member is adjusted so that the upper surface of the flange portion is not exposed. In addition, the present invention provides an overlap package, wherein the overlap package is set to be larger than the outer diameter of the flange portion.
[0010]
As described above, in this overlapping package, the outer diameter of the lid member is set to be larger than the outer diameter of the flange portion in consideration of the displacement of the lid member with respect to the flange portion. Unlike the conventional overlapping package body which is set to the same diameter as the outer diameter of the portion, even when the lid member is displaced with respect to the flange portion, the upper surface of the flange portion is not exposed. Accordingly, when the packaging material wrapping the packaged object is heated and shrunk, the jagged upper corners of the flange portion do not cut into the printing layer formed on the inner surface of the packaging material and peel off the printing layer. The transfer of the printing layer formed on the inner surface to the upper end corner of the flange portion of the container body can be reliably prevented.
[0011]
Further, in order to solve the above-mentioned problem, the invention according to claim 2 is characterized in that the content is accommodated in a cup-shaped or bowl-shaped container body having a flange portion projecting radially outward at an upper end portion. A package to which a sheet-shaped lid member is fixed on the upper surface of the portion, in an overlap package that is wrapped with a packaging material made of a shrink film having a printed layer formed on substantially the entire inner surface and subjected to overlap packaging, An overlapping package is provided, wherein an outer peripheral edge of the flange portion in the container body is curved downward.
[0012]
As described above, this overlapping package is formed by bending the outer peripheral edge of the flange portion of the container body downward, so as to heat-shrink the packaging material wrapping the object to be packaged, so that the jagged corners of the flange portion are formed. Is difficult to cut into the printed layer formed on the inner surface of the packaging material, so that the printed layer of the packaging material is not easily peeled off by the jagged corners of the flange portion, and the outer peripheral edge of the flange portion is Unlike a conventional overlapping package that does not curve downward, the printed layer formed on the inner surface of the packaging material can be reliably prevented from being transferred to the corner of the flange of the container body.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 (a) and 1 (b), the overlap package 1 is a cup-shaped instant noodle (hereinafter referred to as a packaged object) in which a cup-shaped container 10 contains instant ramen and contents such as a drug. 2), a packaging material 3 formed of a shrink film is used to perform overlap packaging, and the packaging material 3 has a product name or a part that covers the top surface or the peripheral surface of the packaged object 2. Gravure printing, flexo printing, or the like is applied to substantially the entire inner surface so that a characteristic pattern or the like is displayed.
[0014]
As shown in FIGS. 2A and 2B, the cup-shaped container 10 has a cup-shaped container main body 11 having a flange portion 12 projecting radially outward from an upper end edge, and an upper end opening of the container main body 11. And a sheet-like lid member 13 for closing the portion. The content S is heat-sealed to the upper surface of the flange portion 12 in a state in which the content S is accommodated in the container main body 11, so that the content S is The inside of the container body 11 is sealed.
[0015]
The container body 11 is formed by forming a foamed polystyrene sheet on which an outer surface layer made of non-foamed polystyrene serving as a skin layer is laminated into a cup shape using a molding die so that the skin layer becomes an outer surface. The flange portion 12 having a diameter of 144 mm and a width of 4 mm is punched out so as to be formed at the upper end portion, and the upper end corner E1 of the flange portion 12 formed by the expanded polystyrene sheet is in a jagged state.
[0016]
As shown in FIGS. 3A and 3B, the lid member 13 includes a base layer 13a formed of paper, an aluminum foil layer 13b and a sealant layer sequentially laminated on the lower surface of the base layer 13a. 13c and a coating layer 13d laminated on the upper surface of the base material layer 13a, and the outer diameter of a portion excluding the knob portion 14 is set to 145 mm which is 1 mm larger than the outer diameter of the flange portion 12 of the container body 11. Have been.
[0017]
The packaging material 3 is formed of a heat-shrinkable biaxially-stretched polypropylene film or the like having a thickness of 15 μm, and as shown in FIG. 4A, a plurality of packages 2 can be sequentially wrapped. The inner side is supplied in the form of a long strip that is repeatedly printed with the same print pattern (the shaded area in the figure is the print area), and sequentially wraps the package 2 in each print area. After being formed in a tubular shape by fusing and sealing with the inner surfaces of both ends in the width direction being overlapped with each other, the tubular packaging material 3 is sequentially blown at a portion shown by a dashed line in FIG. By sealing, the packaged objects 2 are cut off in a state of completely wrapping them one by one.
[0018]
As shown in FIG. 3B, the packaging material 3 wrapping each of the packages 2 is not subjected to corona discharge treatment in order to secure sufficient sealing strength at the fusing seal portion. To leave the outer peripheral portion with a predetermined width, on the inner surface side, using a predetermined printing ink containing a binder and various additives such as a pigment, a solvent, chlorinated polypropylene, etc. A print layer 3a having a thickness of 1 to 4 μm is formed on which a design print for displaying a product name, a characteristic pattern, and the like is performed.
[0019]
As described above, since the outer diameter of the lid member 13 of the overlap package 1 is 1 mm larger than the outer diameter of the flange portion 12 of the container body 11, the lid member 13 is heated on the upper surface of the flange portion 12. At the time of sealing, even when the lid member 13 is displaced by about 0.5 mm with respect to the flange portion 12, the upper surface of the flange portion 12 is not exposed as shown in FIG. The packaged object 2 is manufactured in a state where the packaged object 2 is completely covered by the lid member 13.
[0020]
Accordingly, as described above, when the package 3 is heated and shrunk after the package 2 is wrapped with the package 3, as shown in FIG. 6, the jagged upper corner E1 of the flange 12 is corona-discharged. Untreated, it penetrates into the printing layer 3a formed on the inner surface of the shrink film packaging material 3 having a wetting index of about 32 [mN / m] (JIS K-6768) or less on the film surface (printing side). The printing layer 3a formed on the inner surface of the packaging material 3 is reliably prevented from being transferred from the packaging material 3 to the upper end corner E1 of the flange portion 12 of the container body 11 without peeling the printing layer 3a. be able to.
[0021]
In the above-described embodiment, the outer diameter of the lid member 13 is set to be 1 mm larger than the outer diameter of the flange portion 12 of the container body 11, but the present invention is not limited to this, and the flange portion of the container body 11 is not limited to this. The outer diameter of the lid member 13 may be set to be larger than the outer diameter of the flange portion 12 by about 1 to 2 mm in accordance with the amount of displacement of the lid member 13 with respect to the flange portion 12 when the lid member 13 is heat-sealed to 12. .
[0022]
In the above-described embodiment, even when the lid member 13 is displaced with respect to the flange portion 12, the upper end opening of the container body 11 is closed so that the upper surface of the flange portion 12 is not exposed. Increasing the outer diameter of the lid member prevents the printed layer 3a formed on the inner surface of the packaging material 3 wrapping the packaged object 2 from being transferred to the upper end corner of the flange portion 12 in the container body 11. However, the present invention is not limited to this. For example, as shown in FIG. The effect can be obtained.
[0023]
That is, since the outer peripheral edge of the flange portion 12 in the container body 11 is curved downward, if the lid member 13 heat-sealed to the flange portion 12 is displaced, it does not occur, regardless of whether the lid member 13 is displaced. As shown in FIG. 8, when the packaging material 3 enclosing the packaging material 2 is shrunk by heating, the jagged outer corner E2 of the flange portion 12 does not easily bite into the printing layer 3 a formed on the inner surface of the packaging material 3. The printed layer 3a of the packaging material 3 is not easily peeled off by the jagged corners E2 of the flange portion 12. Therefore, unlike the conventional overlapping package body in which the flange portion projects horizontally, it is ensured that the printed layer 3a formed on the inner surface of the packaging material 3 is transferred to the corner of the flange portion 12 in the container body 11. Can be prevented.
[0024]
Further, in the above-described embodiment, the case where the packaged object 2 is a cup-provided instant noodle is described. However, the present invention is not limited to this, and the overlapped package of the present invention may be a cup-shaped having a flange portion. It goes without saying that the present invention can be applied to various types of packaged objects in which the upper end opening of the bowl-shaped container body is closed by a sheet-shaped lid member.
[Brief description of the drawings]
FIG. 1 (a) is a perspective view showing an embodiment of an overlap package according to the present invention, and FIG. 1 (b) is a side view showing the same overlap package.
FIG. 2A is a cross-sectional view illustrating a packaged object forming the overlap package according to the first embodiment, and FIG. 2B is an enlarged cross-sectional view illustrating a flange portion of a container body forming the same package; FIG.
FIG. 3A is a plan view showing a lid member constituting the packaged object according to the embodiment, and FIG. 3B is a cross-sectional view showing the lid member according to the embodiment.
FIG. 4 (a) is a plan view showing a supply state of a packaging material constituting the same overlapping packaging body, and FIG. 4 (b) is an enlarged plan view showing the same packaging material.
FIG. 5 is a plan view showing a packaged body when the lid member is heat-sealed to a flange portion of the container body in a state where the lid member is displaced.
FIG. 6 is a partially enlarged cross-sectional view showing the overlap package obtained by applying the overlap package to the above-mentioned package.
FIG. 7 is a partially enlarged cross-sectional view showing a flange portion of a container body constituting a packaged object in an overlapped package according to another embodiment.
FIG. 8 is a partially enlarged cross-sectional view showing the same overlap package.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Overlap package 2 Packaged object 3 Packaging material 3a Printing layer 10 Cup-shaped container 11 Container main body 12 Flange part 13 Lid member 14 Knob part

Claims (2)

In a state in which the contents are accommodated in a cup-shaped or bowl-shaped container body having a flange portion projecting radially outward at an upper end portion, a packaged body having a sheet-shaped lid member fixed to the upper surface of the flange portion, In an overlap package, which is wrapped with a packaging material made of a shrink film having a print layer formed on substantially the entire inner surface and subjected to overlap packaging,
When the lid member is fixed to the flange portion of the container body, even if the lid member is displaced with respect to the flange portion, the upper surface of the flange portion is exposed so that the upper surface of the flange portion is not exposed. An overlap package, wherein a diameter is set larger than an outer diameter of the flange portion. In a state in which the contents are accommodated in a cup-shaped or bowl-shaped container body having a flange portion projecting radially outward at an upper end portion, a packaged body having a sheet-shaped lid member fixed to the upper surface of the flange portion, In an overlap package, which is wrapped with a packaging material made of a shrink film having a print layer formed on substantially the entire inner surface and subjected to overlap packaging,
An overlap package wherein an outer peripheral edge of the flange portion in the container body is curved downward.

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