JP2003146362A - Container packaging body with heat-shrinkable film and method for packaging it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container packaging body with a heat-shrinkable film which can be easily opened by positively forming a projected part when the heat-shrinkable film is shrunk by heat and utilizing the projected part as a pinching part and can be inexpensively manufactured as it is unnecessary to separately form an exclusive pinching part in advance and a method for packaging it. SOLUTION: In the container packaging body with the heat-shrinkable film having the projected part 9 formed by the film reaching a shrinkage limit at a corner part containing a sealed part when the container 1 is covered with the heat-shrinkable film 3 and both ends of the heat-shrinkable film 3 are heat- sealed together and the heat-shrinkable film 3 is shrunk by heating, an intermittent notch 10 for breaking the heat-shrinkable film 3 by making the projected part 9 as a start is formed in the heat-shrinkable film 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container pack made of a heat-shrinkable film, which is optimal for packing a plurality of containers with a predetermined number of heat-shrinkable films, and a packing method thereof.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
A product in which a soft drink is filled in a container such as a small glass bottle is shipped in a plurality of products using a heat-shrinkable film as a packaging material in an overlapping packaging (multipack). The packaging means using the heat-shrinkable film is less expensive and bulkier than the case of packaging in a paper box, and is therefore advantageous when it is discarded.

However, since the heat-shrinkable film adheres to the container in a tensioned state, it has a drawback that the heat-shrinkable film is broken and becomes difficult to open when the product is used. Therefore, a device for facilitating the opening is required. Becomes

The present invention has been made in view of the above-mentioned conventional problems. When the heat-shrinkable film is heat-shrinked, the projecting portion is positively formed and the projecting portion is used as a picking portion. By doing so, it is possible to easily open, and since it is not necessary to separately form a dedicated pinching portion separately, it is an object to provide a container package and a packaging method using the heat-shrinkable film that can be manufactured at low cost. To do.

[0005]

In order to solve the above-mentioned problems, the present invention has been made as a container-wrapping body made of a heat-shrinkable film and a packaging method thereof. The characteristics of the container-wrapping body made of a heat-shrinkable film are as follows. When the container 1 is covered with the heat-shrinkable film 3 and both ends of the heat-shrinkable film 3 are heat-sealed to heat-shrink the heat-shrinkable film 3, the film shrinks to the corners including the seal part. In the container package made of the heat-shrinkable film having the protrusions 9 formed by reaching, the intermittent cuts 10 for breaking the heat-shrinkable film 3 triggered by the protrusions 9 are formed.
Is formed on the heat-shrinkable film 3.

When the protrusion 9 is pulled, the heat-shrinkable film 3 is ruptured through the intermittent cuts 10 triggered by the protrusion 9. Therefore, when the heat-shrinkable film 3 is heat-shrinked, it is possible to easily open the heat-shrinkable film 3 by utilizing the positively formed protrusions 9, and it is not necessary to separately form a dedicated knob.

A feature of the container packaging method using the heat-shrinkable film is that the container 1 is covered with the heat-shrinkable film 3, both ends of the heat-shrinkable film 3 are heat-sealed, and then the heat-shrinkable film 3 is heat-shrinked. At this time, in the container packaging method in which the film reaches the shrinkage limit at the corner portion including the seal portion to form the projecting portion 9, the heat shrinkable film 3 is heated before the heat shrinkable film 3 is heated. The intermittent cut 10 is formed at a predetermined position, and the heat-shrinkable film 3 is heat-shrinked so that the intermittent cut 10 is located at or near the protruding portion 9 and the protruding portion 9 is pulled. At this time, the heat-shrinkable film 3 is broken through the intermittent cuts 10.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show a package A according to an embodiment of the present invention, and in FIGS.
Reference numeral 1 is a container for accommodating various contents, and the container is, for example, a glass bottle filled with a soft drink or a medicine (drink). The plurality of containers 1 (5 containers in this embodiment) are arranged in two rows in the front and rear.

Each of the containers 1 is covered with the heat-shrinkable film 3 in the above arrangement state. The heat-shrinkable film 3 is, for example, a low-density polyethylene, a linear low-density polyethylene, a polyolefin such as polypropylene, a single-layer or multi-layer biaxially stretched surface of polyvinyl chloride, etc. Examples include films. A film having a shrinkage ratio of about 20% to 50% in both length and width is preferable.

The heat-shrinkable film 3 is formed on each container 1
The upper and lower pieces 3a, 3b,
Front and rear piece portions 3c and 3d and left and right side piece portions 3e and 3f are formed. Both ends of the both side piece portions 3e and 3f are heat-sealed to each other. Specifically, both side pieces 3
By heat-sealing the opening edge portions (both ends) 5a and 5b of e and 3f, a band-shaped heat-sealing portion 7 having a predetermined width (for example, a width of 2 to 10 mm is preferable) is formed in the vertical direction.

Edge portions 5a and 5b of the both side piece portions 3e and 3f.
A so-called "corner" -shaped protrusion 9 is formed at the upper and lower positions of the so as to protrude as a knob. The projecting portion 9 in the present embodiment is a portion including the end portion of the heat-sealing portion 7 and formed at the both end corners of the sealing portion when the film reaches the shrinkage limit. It is formed positively by the heat shrinkage of. An intermittent cut (perforation) 10 for breaking the heat-shrinkable film 3 is engraved at the base of each protruding portion 9 or in the vicinity thereof. As shown in FIG. 1B, the perforation 10 is continuous from the upper edge 3g of both pieces to the base of the heat seal portion 7 when the bag-shaped heat-shrinkable film 3 is flattened. It is desirable that they are formed as follows.

Next, the case of packaging the container with a heat-shrinkable film will be described. First, as shown in FIG. 4, a raw material 12 of a long heat-shrinkable film wound in a roll shape.
Is set in the pillow packaging machine 13, for example. And
The raw fabric 12 is fed out by the feed roller 15, and the substantially circular perforation 10 is provided at a predetermined interval on the fed raw fabric 12.
It is engraved in the central portion of the original fabric 12 in the width direction (see FIG. 5).

As a means for forming such perforations 10, a pair of pressing plate rollers 16 can be adopted.
The perforation 10 has a circular shape because its substantially central position is the cutting position a of the original 12. Further, the perforation 10 is provided in the widthwise central portion of the material 12 as follows.
This is because when the raw fabric 12 is formed into a tubular shape, the central portion thereof becomes the upper piece portion 3a.

Further, the original fabric 12 is formed into a tubular shape by the former 17, and both end portions of the original fabric 12 are heat-sealed along the longitudinal direction by the vertical sealers 18. Also,
A plurality of containers 1 are conveyed in an upright state in a cylindrically formed original fabric 12 to cover the plurality of containers 1.
The portions corresponding to the opening edge portions (both ends) 5a and 5b are heat-sealed to a predetermined length by the horizontal sealer 20 and cut. At this time, band-shaped heat seal parts 7 are formed at both ends in the front-rear direction of the heat-shrinkable film 3 cut into a predetermined length.

The plurality of containers 1 covered with the heat-shrinkable film 3 further pass through a shrink tunnel (heat shrinking device) not shown. At this time, the entire heat-shrinkable film 3 is heated, and the heat-shrinkable film 3 shrinks so that the plurality of containers 1 can be tightly bound and tightly packaged. Also,
Due to the heat shrinkability, the protrusion 9 is automatically formed. Since the projecting portion 9 is formed at a corner portion including the end portion of the band-shaped heat seal portion 7, the pre-formed perforation 10 is located at a predetermined position near the projecting portion 9 or the like. Become.

In order to positively form the protruding portion 9 as described above, the vicinity of the corner portion including the end portion of the heat seal portion 7 shrinks due to heat shrinkage (a state in which normal heat does not shrink any more). ) Is reached and remains as the angular protrusions 9, and the other portions are contracted so as to shrink to bind the container in a close contact state, and the shrinkage rate and dimensions of the film are set.

Moreover, since the band-shaped heat-sealing portion 7 is heat-sealed and hardened and is difficult to shrink, the sealing portion 7 hardly shrinks due to heat, and the protruding portion 9
To be continuously formed downward.

Next, when the package A having the above structure is opened, the heat-shrinkable film 3 can be broken through the perforations 10 by pinching and pulling the protruding portion 9. Since the heat-shrinkable film 3 is provided with the heat-sealed and hardened strip-shaped heat-sealing portion 7, the heat-sealing portion 7 has a function of an opening tape, and along the heat-sealing portion 7, The heat-shrinkable film 3 can be easily and surely broken (see FIGS. 3A and 3B).

By removing the heat-sealing portion 7 halfway or completely, the desired number of containers 1 can be taken out from the broken opening 22 of the heat-shrinkable film 3, and the heat-shrinkable film 3 can be obtained. Are hard to break to an extra part in any direction, and the unused container 1 does not fall apart, and can be packaged and stored collectively.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the perforation 10
Was provided before coating the container 1 with the heat-shrinkable film 3, but before heating, the container 1 was covered with the heat-shrinkable film 3 before heating.
It is also possible to provide after coating. Further, instead of cutting the horizontal seal after heat-sealing as described above, a fusing seal without the band-shaped heat-sealing portion 7 may be used. Similarly, the vertical seal may be a fusing seal.

Moreover, the packaging form of the heat-shrinkable film is
In addition to the pillow packaging, a bag-shaped one in which a heat-shrinkable film cut into sheets is sealed on three sides may be used, and the packaging form is not particularly limited. Further, the heat-shrinkable film may be used when the container is partially exposed, in addition to completely covering the container. Furthermore, the type and shape of the container are not particularly limited,
It may be the case of packaging a single container.

[0022]

INDUSTRIAL APPLICABILITY According to the present invention, the protrusion formed when the heat-shrinkable film is heat-shrinked is used as a picking portion, and furthermore, the protrusion is used as a trigger to interrupt the heat-shrinkable film. Since the incision is formed in the heat-shrinkable film, it can be easily opened by pinching the protruding part, and it is not necessary to separately form a dedicated pinching part, so that it can be manufactured inexpensively and easily. You can

In addition, when both ends of the heat-shrinkable film are heat-sealed, a band-shaped heat-sealed portion having a predetermined width is formed, and the heat-shrinkable film is broken along the heat-sealed portion. In addition, the heat-shrinkable film can be easily and reliably broken and, for example, in the case of packaging a plurality of containers, the heat-shrinkable film is broken in an arbitrary direction to cause the containers to fall apart. Can be prevented, and necessary containers can be sequentially taken out.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a perspective view of a package formed by packaging a plurality of glass bottles with a heat-shrinkable film, and (b) is a heat-shrinkable bag-shaped product. It is a front view of the state which made the film flat.

FIG. 2A is a front view of a main part of a glass bottle covered with a heat-shrinkable film before the heat shrinkage, and FIG. 2B is a front view of the main part after the heat shrinkage.

FIG. 3 (A) is a front view of a main part of the heat-shrinkable film in a broken state, and (B) is a perspective view of a main part of the heat-shrinkable film in a broken state.

FIG. 4 is a schematic view of a packaging machine.

FIG. 5 is a perspective view showing an original fabric of a long heat-shrinkable film.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Glass bottle (container), 3 ... Heat-shrinkable film, 7 ... Heat seal part, 9 ... Protrusion part (Pinch part), 10 ... Perforation (intermittent cut)

Continued front page    F term (reference) 3E067 AA03 AB26 AC03 BA03B                       BA18C BB08B BB14C BB15C                       BB16C BB18C CA01 CA24                       EA06 EB02 EB11 FA04 FB01                       FC01

Claims (3)

[Claims] 1. When the container (1) is covered with a heat-shrinkable film (3) and both ends of the heat-shrinkable film (3) are heat-sealed to heat-shrink the heat-shrinkable film (3). In a container package made of a heat-shrinkable film having a protrusion (9) formed when a film reaches a shrinkage limit at a corner portion including a seal portion, the heat-shrinkable film () is triggered by the protrusion (9). A container package made of a heat-shrinkable film, characterized in that the heat-shrinkable film (3) is provided with intermittent cuts (10) for breaking the step (3). 2. The heat-shrinkable film (3) is heat-sealed at both ends to form a band-shaped heat-sealed portion (7) having a predetermined width, and the heat-shrinkable film (3) is the heat-sealed portion. The container package made of the heat-shrinkable film according to claim 1, wherein the container package is broken along the line (7). 3. When the container (1) is covered with a heat-shrinkable film (3), both ends of the heat-shrinkable film (3) are heat-sealed, and the heat-shrinkable film (3) is heat-shrinked, A container-wrapping method in which a projection (9) is formed when a film reaches a shrinkage limit at a corner portion including a seal portion, the heat-shrinkable film before heating the heat-shrinkable film (3). An intermittent cut (10) is formed at a predetermined position of (3), and the heat-shrinkable film (3) is heat-shrinked to form the intermittent cut (1).
0) is located at or near the protrusion (9), and when the protrusion (9) is pulled, the heat-shrinkable film (3) is broken through the intermittent cuts (10). A container packaging method using a heat-shrinkable film, characterized in that