JP2526349B2 - Package with label for opening and packaging method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging body with a label for opening and a packaging method in which a label for opening the packaging body is affixed to a packaging body enclosing contents such as foods.

[0002]

2. Description of the Related Art Conventionally, there is a package in which contents such as food are shrink-wrapped with a heat-shrinkable film.

As shown in FIG. 7, this package is preliminarily arranged at a predetermined position of the package 21 in advance so that the heat-shrinkable film 23 can be opened smoothly when the contents 22 are taken out.
A semicircular (not shown) or U-shaped, U-shaped (not shown) or the like cutout line 25 having a breaking guide wire 24 in the opening direction is formed in conformity with the opening direction. Formed fracture
26 was provided, and the unsealing label 27 was attached via a pressure-sensitive adhesive so as to cover the broken piece 26.

When the film 23 is unsealed, one end of the unsealing label 27 is pulled so that the heat-shrinkable film 23 and the unsealing label 27 are integrally torn from the rupture piece 26. Easily the heat shrinkable film
Twenty-three was designed to be open.

If the broken pieces 26 are provided before the shrink wrapping process, the shape is significantly deformed as shown in FIG. 7 due to heat shrinkage performed during shrink wrapping (curls up or heat shrinks). As a result, it becomes difficult to attach the unsealing label 27 to the upper surface thereof, and therefore the fractured piece 25 is engraved after heat shrinking.

As described above, in the package 21, the broken pieces are
Since it is practically impossible to engrave 26 in the pre-process of heat-shrinking, the heat-shrinkable film 23 used for packaging as shown in FIG. It was necessary to provide a deaeration hole (deaeration hole) 28 in the.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In No. 21, since the degassing holes 28 are still open even after packaging, the airtightness is considerably impaired, and in some cases dust 22 enters the contents 22 to reduce the freshness and the product value is significantly reduced. It was

Therefore, in the present invention, in view of the above problems,
Shrink wrap does not cause deformation of fractured pieces due to heat shrinkage, there is no need to provide degassing holes for heat shrinkage in advance, and it is easy to open the film when taking out the contents after packaging. It is an object of the present invention to provide a packaging body with a label for opening and a packaging method that can be surely performed.

[0009]

The present invention takes the following technical means in order to achieve the above object.

That is, a tearing portion 7 is engraved at a predetermined position of the heat-shrinkable film 2 enclosing the contents 1, the tearing portion 7 is covered, and the opening label 4 for opening the film 2 is opened. In the package adhered to the film 2, the tearing portion 7 is formed in a substantially linear shape, and the label 4 for opening is provided with a heat-sensitive adhesive 6 whose stickiness lasts for a certain time. In the packaging method, the heat shrinkable film 2 is provided with a substantially linear cutout 7 at a predetermined position, and the content 1 is shrink-wrapped with the film 2. After that, the label 4 for opening which is provided with the heat-sensitive adhesive 6 whose stickiness lasts for a certain time is heated on the upper surface of the film 2 to activate the adhesive 6, and then the rupture portion 7 is covered. It is characterized in that it is attached via the adhesive 6 so as to cover it. .

[0011]

The label 4 for opening according to the present invention, which is shrink-wrapped with the heat-shrinkable film 2 and opens the heat-shrinkable film 2.
Since a substantially linear rupture portion 7 is engraved at a predetermined position in the package to which is adhered, the rupture portion 7 serves as a deaeration hole, and when the heat-shrinkable film 2 is heat-shrinked, The air is discharged from the rupture portion 7 and the packaging state becomes good. Further, since the rupture portion 7 has a substantially linear shape,
The shrinkage 7 does not deform due to heat shrinkage of the shrink wrap.

Further, since the unsealing label 4 is adhered with the heat-sensitive adhesive 6 whose tackiness lasts for a certain period of time,
It is possible to maintain a fairly strong adhesive force, and therefore, when the heat-shrinkable film 2 is opened, even if the starting point is the linear breakage portion 7, the heat-shrinkable film 2 can be pulled by pulling the opening label 4.
Can be surely opened.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the package of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the package of the present invention is a package in which a content 1 such as an instant food or a range food is surrounded by a heat-shrinkable film 2 and shrink-heated to shrink-wrap. The label 2 for opening is attached to the main body 3 with an adhesive at an attaching portion 5 of the label 4, leaving one end (unattached portion 8) of the label 4 so that the film 2 can be freely opened. It is a thing.

The heat-shrinkable film 2 is, for example, a single-layer film made of an ordinary thermoplastic resin such as polypropylene, polyethylene, or polyvinyl chloride, an ethylene / vinyl alcohol copolymer resin having excellent gas barrier properties, or polyvinylidene chloride. It is composed of a laminate of resins and the like.

Further, as shown in FIG. 2, the label 4 is provided with a heat-sensitive adhesive 6 whose adhesiveness lasts for a certain period of time, which is adhered to the sticking portion 5 thereof. In, delayed tack adhesive is used.

The delayed tack adhesive has no tackiness on the adhesive surface after coating and drying at room temperature. However, when heated, the crystalline solid plasticizer softens the polymer to generate tackiness. However, since the adhesive force can be maintained for a certain period of several hours to several days even after cooling, the adhesive 6 can have a strong adhesive force.

Therefore, when the delayed tack adhesive is used, in order to stick the label 4 to the heat-shrinkable film 2, the sticking portion 5 of the tack label 4 is applied and dried in advance, and heat is applied at the time of bonding. Since it does not need to be tacky until activated, unlike conventional pressure-sensitive adhesives, release paper is not required.

As the solid plasticizer, phthalic acid esters, various benzoic acid esters and the like are used, and those having a melting point of 50 ° C. to 100 ° C. are particularly preferable.

As the heat-sensitive adhesive 6 whose tackiness lasts for a certain period of time, in addition to the above-mentioned delayed tack adhesive, a hot melt capable of being melted by heating and having a sticking force lasting for a certain period of time of 1 to several minutes. It is also possible to use an adhesive.

On the heat-shrinkable film 2 side corresponding to the sticking portion 5 of the label 4, as shown in FIGS. 1 and 3, in advance,
A linear cutout portion 7 that penetrates through is provided, and this cutout portion 7 is, for example, a solid line cutout as shown in FIG. 3 (a), or as shown in FIG. It is formed by forming a broken line.

When the unattached portion 8 of the label 4 is pulled by the rupture portion 7, the rupture portion 7 serves as a starting point, and FIG.
As shown in, the heat-shrinkable film 2 and the label 4 are torn together, and the heat-shrinkable film 2 is easily opened.

Therefore, conventionally, as shown in FIG. 7, the adhesive strength of the unsealing label 26 was weak, so that the rupturing piece 25 (semicircular shape, U-shape) always having the unsealing guide wire 24 in the unsealing direction. However, as described above, in the packaging body of this embodiment, the adhesiveness of the delayed tack adhesive or the like as the adhesive of the label 4 is not achieved. Since the heat-sensitive adhesive 6 that lasts for a certain period of time is used, the rupture part 7 that firmly adheres and is the starting point of tearing can be sufficiently straight even as described above. The installation process will be fairly easy.

When the opening label 4 is attached, it is preferable that the rupture portion 7 is provided as close to the unattached portion 8 of the label 4 as possible, since this is a starting point at the time of opening. In consideration of the directionality of the film 2, the linear direction of the tearing portion 7 is engraved in a direction orthogonal to the direction in which the film 2 is easily torn, and the opening direction of the film 2 is adapted to the direction in which the film is easily torn. It is preferable because the film 2 can be easily torn and opened.

After the heat shrinkage of the film 2, the rupture portion 7 is
Since the film 4 is closed by attaching the label 4 to the film 2, water vapor and oxygen do not invade from the rupture portion 7, the airtightness to the content 1 is excellent, and the freshness of the content 1 is maintained. It is possible to prevent a decrease in product value.

The package of this embodiment has the above-mentioned structure. Next, a method of manufacturing the package will be described with reference to FIGS.
An explanation will be given based on (d). In addition, the upper stage (A) of FIG. 6 is an explanatory plan view, and the lower stage (B) is an explanatory sectional view.

First, a long-shrinkable heat-shrinkable film 2 made of polypropylene or the like wound on a roll 11 is placed in a packaging device.
Set, and while pulling out the film 2, make continuous linear (including solid line and broken line) notches at predetermined positions (marked with ▼ in the figure) at predetermined intervals with a cutter etc. Part 7 is engraved (see figure (a)).

By providing the rupture portion 7 before shrink-wrapping, when the film 2 is heat-shrinked, it also functions as a deaeration hole for letting air in the film 2 escape to improve the shrinkage state of the film 2. So that the heat-shrinkable film 2
It is not necessary to separately provide a dedicated deaeration hole, and the work process can be omitted.

Next, the roll-shaped heat-shrinkable film 2 set in the packaging device is fed out and conveyed so that one wrapping unit 7 forms one package, and the former forms the contents 1. The contents 1 are fitted together to surround the contents 1, and the ends 13 thereof are heat-sealed, and the front and rear ends 14, 14 ′ of the film 2 for covering the contents 1 are fused and welded to an appropriate size with a heat cutter or the like. Then, the film 2 is heated and shrunk by the heat shrinker 12 (referred to as shrink wrap).
The packaging body 3 is formed (see Fig. (B)).

Next, the unsealing label 4 provided with the delayed tack adhesive, which is the heat-sensitive adhesive 6 whose tackiness lasts for a certain period of time, leaving the unattached portion 8 at 50 ° C to 150 ° C.
After heating the adhesive 6 to a certain degree and activating the adhesive 6, the adhesive is applied along the direction orthogonal to the linear direction of the rupture portion 7 so as to cover each rupture portion 7 of the packaging body 3. (See Figure (c)).

Of course, the label 4 may not be provided with the unattached portion 8 and the adhesive 6 may be applied over the entire surface.

When the film 2 is unsealed, as described above, the unattached portion 8 of the label 4 is pulled and the tearing portion is cut.
Starting from 7, the heat-shrinkable film 2 and the tack label 4 are torn together (see (Fig. 2)).

In the above embodiment, the rupture portion 7 was engraved at the stage where the heat-shrinkable film 2 was in the state of the long strip, but at the stage before the shrink-wrapping of the contents 1. For example, the heat shrinkable film 2 may be engraved immediately after the content 1 is surrounded.

Although food is used as an example of the contents 1 in the present embodiment, the contents are not particularly limited.
The shape of the label 4 is also not particularly limited.

Further, the breaking portion 7 is not limited to the linear shape, but may be, for example, an I-shape as shown in FIG. 4 (a), or a slight shape as shown in FIG. 4 (b). It does not matter if it has a curved shape, a shape having a slight angle line as shown in FIG. 4C, etc., as long as it is not deformed by heat shrinkage during shrink-wrapping.
Any through hole may be used so that the engraving process is easy and it can act as a deaeration hole.

[0036]

EFFECT OF THE INVENTION In the package according to the present invention, the contents are shrink-wrapped with a heat-shrinkable film, an unsealing label is stuck on the upper surface of the heat-shrinkable film, and a substantially straight line is provided at a predetermined position of the sticking portion. Since the rupture portion is engraved, the rupture portion serves as a starting point and the film can be easily opened by pulling the opening label.

At this time, the rupture portion is provided at a stage before shrink wrapping, but since it is formed in a substantially linear shape, it does not deform due to heat shrinkage during shrink wrapping and is opened. The label can be easily attached and the engraving process is easy. Moreover, the ruptured portion also acts as a deaeration hole, and the packaging state is always good.

Furthermore, since the unsealing label is adhered with a heat-sensitive adhesive whose tackiness lasts for a certain period of time, it is possible to maintain a strong adhesive force, and as described above, the rupture portion is substantially linear. However, when the film is torn, it is possible to surely open the film without tearing only the opening label.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing an embodiment of a package of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3A to 3C are explanatory views showing the shape of a rupture portion.

FIG. 4A to FIG. 4C are explanatory views showing another shape of the rupture portion.

FIG. 5 is a perspective explanatory view showing an opened state of the film.

FIG. 6 is a schematic view showing an embodiment of a method for manufacturing a package according to the present invention.

FIG. 7 is an explanatory perspective view showing a conventional example.

FIG. 8 is an explanatory perspective view showing another conventional example.

[Explanation of symbols]

 1 Contents 2 Heat-shrinkable film 3 Packaging body 4 Opening label 6 Heat-sensitive adhesive 7 Rupture part

Claims (2)

(57) [Claims] 1. A heat-shrinkable film 2 for enclosing a content 1.
In the packaging body in which the tear-off portion 7 is engraved at a predetermined position, the tear-off label 4 for covering the tear-off portion 7 and opening the film 2 is attached to the film 2, A package with a label for opening, wherein the part 7 is formed in a substantially linear shape, and the label 4 for opening is adhered via a heat-sensitive adhesive 6 whose adhesiveness lasts for a certain time. 2. A heat-shrinkable film 2 is provided with a substantially linear breaking portion 7 at a predetermined position, and after shrink-wrapping the contents 1 with the film 2, an adhesive property is provided on the upper surface of the film 2. The opening label 4 provided with the heat-sensitive adhesive 6 that lasts for a certain time is heated to activate the adhesive 6, and then the label 6 is attached via the adhesive 6 so as to cover the rupture portion 7. A packaging method characterized by wearing.