JP2001322634A - Shrink package and packaging method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shrink package employing a corrugated board box wherewith a shrinkable film is prevented from being damaged or torn up by corners of the box when packaged with the shrinkable film and also is prevented from being torn up easily during shrinkage of the film or after completion of packaging, and to provide a packaging method therefor. SOLUTION: Notched parts 3 each in a shape of circular hole are provided at corners of a corrugated board box 1 to be covered at its external surfaces with a shrinkable film. At the time of die cutting a corrugated board sheet into a developed shape of the box, notched parts 3 each in a specified shape are die cut at the same time on parts positioned at corners of the box and after the corrugated board sheet die cut in the developed shape of the box is fabricated into the shape of the box, contents are housed in the box. After the corrugated board box 1 having the contents therein is covered at its external surfaces with a shrinkable film, it is the shrink packaged with the shrinkable film heated by a heating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shrink package and a packaging method thereof.

[0002]

2. Description of the Related Art Corrugated cardboard containers are inexpensive and easy to handle, so they are widely used as boxes for carrying goods, but recently, they are not only used as boxes for carrying goods. It is often used as a cosmetic box for store display. Therefore, on the outer peripheral surface of the cardboard container, patterns and patterns that also serve as product advertisements,
Product names, company names, etc. are often given in beautiful color printing, so that these printing surfaces can be seen, and that the printing surfaces are not damaged during transportation. For this reason, after the product is stored, it is widely practiced to closely package the entire cardboard container with a transparent shrink film (heat-shrinkable packaging film) to form a shrink package.

[0003]

When the cardboard container is wrapped with a shrink film as described above, the conventional cardboard container has the following problems.
That is, the corrugated cardboard container is usually a rectangular cube, and the eight corners are usually pointed at a right angle. For this reason, when the shrink film is thermally shrunk and the outer surface of the cardboard container is tightly and tightly packed without any gap, the film may be damaged or broken at the corners.

[0004] In the case of wrapping paper such as paper,
Even a slight tear did not cause any further damage unless it was forcibly torn, and was not a problem. However, when wrapped with shrink film, the shrink film has a unique crystal orientation called uniaxial stretching, and the film is damaged or slightly torn, and the film is stretched along a specific direction. But easily torn. Therefore, care must be taken when handling, and if the film is scratched or even slightly torn at the corners of the box, the tear will progress from that part and spread throughout the container, impairing the appearance Or had to start over with shrink wrapping.
In order to eliminate such a problem, it is necessary to make the film thicker, but there are drawbacks that the cost is increased and the finished appearance is deteriorated.

The present invention has been made in order to solve the above-mentioned problem, and when packaging with a shrink film, the film is not damaged or broken at the corners of the box, and the conventional method is used. An object of the present invention is to provide a shrink package using a cardboard container having a structure in which a shrink film is not easily broken during shrinkage of a film or after completion of packaging, and a method of packaging the shrink package.

[0006]

In order to achieve the above object, a shrink package of the present invention has a cutout provided at a corner of a cardboard container whose outer surface is covered with a shrink film. It is most desirable that the notch be a circular hole.

Further, according to the shrink packaging method of the present invention, when a corrugated paperboard is punched in a developed view shape of a container, a cutout portion having a predetermined shape is simultaneously punched in a portion located at a corner of the container, and the developed view is obtained. After assembling the corrugated paperboard punched into a shape into a container shape, the contents are accommodated therein, and the outer surface of the cardboard container storing the contents is covered with a shrink film, and then the shrink film is heated by a heating means. And shrink-wrap it.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a structure of a cardboard container for a shrink package according to a first embodiment of the present invention. FIG. 1 is a perspective view of a cardboard container, FIGS. 2A to 2C are front views of the cardboard container and enlarged views of corner portions, and FIGS. 3A and 3B are plan views and corner portions of the cardboard container. FIG. 4 is a right side view of the cardboard container, FIG. 5 is a developed view of the cardboard container, and FIG. 6 is a perspective view showing a state in which the contents are stored in the cardboard container.

A cardboard container 1 for a shrink wrapper according to the first embodiment is an example of a cardboard container for containing a set of five contents such as a detergent 2 (FIG. 6). ), The rounded notch 3 at the eight corners of the cubic cardboard container eliminates sharp corners and prevents the film from being damaged or broken when wrapped with shrink film. This is what was prevented.

Further, in the case of the first embodiment, the insertion piece at the tip of the top plate 4 is used to prevent the top plate 4 rising from the back plate 14 from opening naturally during shrink packaging and preventing the shrink packaging from being performed. A substantially V-shaped cut groove 7 is formed on both left and right sides of the fold line 6 of FIG. 5, and a side edge of an upper flap 8 connected to an upper edge of the side plate 12 faces the cut groove 7. Where the top plate 4
When the lid 5 is inserted into the inside of the front plate 9 and the lid is closed, a projection 10 is formed to enter the cut groove 7 and lock the top plate 4 so as not to open.

In order to manufacture the cardboard container 1 having the above structure, a pattern, a design, a product name, a company name, and the like are printed on a flat corrugated paperboard, and then cut into a shape as shown in a development view of FIG. After attaching the folding line 11 for assembly shown by the dotted line,
What is necessary is just to assemble in the state of FIG. 1 by a box making machine.

Then, the detergent 2 is accommodated in the cardboard container 1 assembled as described above, as shown in FIG.
After the left and right upper flaps 8 are closed and folded, the top plate 4 is covered, and the insertion piece 5 at the tip is inserted between the top plate 4 and the front plate 9.

When the insertion piece 5 is inserted between the front piece 9 and the front plate 9, a protrusion formed at the side edge of the upper flap 8 is inserted into a substantially V-shaped cut groove 7 formed on both right and left sides of the insertion piece 5. The piece 10 is locked in the closed state so that the top plate 4 does not open without permission.

After accommodating the detergent 2 as a content as described above, the cardboard container 1 is shrunk by a shrink wrapping machine.
Is wrapped in a shrink film, and the shrink film is heated and shrunk by a heating means such as an infrared ray or a heater, and the cardboard container 1 is shrink-wrapped.

Conventionally, during the shrink packaging, the shrink film may be damaged or torn at the corners of the cardboard container, but in the present invention, all of the eight corners are damaged. Is cut off at its corner by the circular cutout 3, so that the shrink film is not damaged or broken. For this reason,
Unlike a conventional corrugated container, the shrink film does not break from the corners of the corrugated container and spread all over.

In the above-described embodiment, the cutout 3 is a round hole. However, the cutout 3 is not limited to a round hole, and a polygonal shape such as a square or a triangle may be used as long as a sharp corner can be eliminated. The hole may be. Further, although the shape of the cut groove 7 is substantially V-shaped, the shape is not limited, and any groove shape such as a U-shape or a U-shape that can enter the protruding piece 10 may be used.

FIGS. 7 and 8 show the structure of a cardboard container for a shrink package according to a second embodiment of the present invention. FIG. 7 is a perspective view of the cardboard container, and FIG. 8 is a developed view of the cardboard container. Note that the same or corresponding parts as those of the cardboard container for the shrink wrapper according to the first embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

The cardboard container 21 for a shrink package according to the second embodiment is the same as the cardboard container 1 for a shrink package according to the first embodiment described above.
What is different from the first embodiment is a top plate 4 provided with an insertion piece 5 and a cut groove 7 such as a cardboard container 1 for a shrink wrapper according to the first embodiment, an upper flap 8 provided with a projecting piece 10, and the like. This is the point that the upper lid portion is constituted by four upper flaps 28a to 28d each having a simple rectangular shape without opening, without adopting the upper lid structure having a complicated shape.

In the case of the second embodiment, the upper flaps 28a to 28d are provided with the insertion pieces 5 like the cardboard container 1 for the shrink wrapper according to the first embodiment.
When the upper flaps 28a to 28d are closed by storing a detergent or the like as contents, a wide tape is applied to the joint of the flaps so that the closed flaps do not open. But it is necessary to stop with a staple or the like, but the other points are the cardboard container 1 for the shrink wrapper according to the first embodiment described above.
Is the same as

[0020]

As described above, according to the shrink package and the packaging method of the present invention, the cutout is provided at the corner of the cardboard container whose outer surface is covered with the shrink film. The shrink film will not be scratched or torn at the corners, and the shrink film will easily break from the corners during shrinkage of the shrink film or after the packaging is completed as in a conventional cardboard container. Disappears. For this reason, the occurrence of defective packaging can be reduced, the yield can be improved, the efficiency of packing and packaging can be improved, and a thin film can be used, so that the finished appearance can be improved.
In addition, when shrink wrapping is desired, particularly when a product having a good finished appearance is desired, it is necessary to use a shrink film having as large a shrinking force as possible. However, such a case can be dealt with.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a cardboard container for a shrink package according to a first embodiment of the present invention.

2 (a) is a front view of the cardboard container, (b) is an enlarged view of P ₁ moiety in (a), (c) the P ₂ in (a)
It is an enlarged view of a part.

3 (a) is a plan view of the cardboard container, an enlarged view of a P ₃ moiety in (b) is (a).

FIG. 4 is a left side view of the cardboard container.

FIG. 5 is a development view of the cardboard container.

FIG. 6 is a perspective view showing a state in which contents are stored in the cardboard container.

FIG. 7 is a perspective view showing a structure of a cardboard container for a shrink package according to a second embodiment of the present invention.

FIG. 8 is a development view of the cardboard container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated container 2 Detergent (content) 3 Notch 4 Top plate 5 Insertion piece 6 Folding line 7 Notch groove 8 Upper flap 9 Front plate 10 Projection piece 11 Fold line 12 Side plate 14 Back plate 21 Corrugated container 28a to 28d Upper flap

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[Procedure amendment]

[Submission date] June 20, 2000 (2006.2.
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

The present invention has been made in order to solve the above-mentioned problem, and when packaging with a shrink film, the film is not damaged or broken at the corners of the box, and the conventional method is used. and to provide a shrink wrap material and its packaging method shrink film after shrink during or packaging complete with container structures have never become torn easily in the film.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

Means for Solving the Problems] To achieve the above object, the shrink package of the present invention, is provided with a notch on the corner portion of the container that is coated with an outer surface with a shrink film. It is most desirable that the notch be a circular hole.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] In addition, shrink packaging method of the present invention, the plate
When the paper is punched into a developed view shape of the container, a cutout portion having a predetermined shape is simultaneously punched into a portion located at a corner of the container, and after assembling the paperboard punched into the developed view shape into a container shape, containing the contents therein, after the outer surface of the container which houses the contents were covered with a shrink film, by heating the shrink film in the heating means is obtained so as to shrink packaging.

Claims (3)

[Claims] 1. A shrink package wherein a cutout is provided at a corner of a cardboard container whose outer surface is covered with a shrink film. 2. The shrink wrapper according to claim 1, wherein said notch comprises a circular hole. 3. A blanket having a predetermined shape is simultaneously punched into a portion located at a corner of a container when the corrugated paperboard is punched into a developed shape of the container, and the corrugated paperboard punched into the developed shape is removed. After assembling into a container shape, the contents are accommodated therein, the outer surface of the cardboard container accommodating the contents is covered with a shrink film, and then the shrink film is heated by a heating means and shrink-wrapped. Shrink packaging method for cardboard containers.