JP3301319B2 - Packaging structure with overlap film - 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 structure in which an object to be packaged, such as a tape cassette or a disk cassette, is wrapped with an overlap film, and the overlap film can be easily opened. It relates to the structure of the part.

[0002]

2. Description of the Related Art For example, a box-shaped package such as a tape cassette or a disk cassette is packaged by an automatic wrapping machine as shown in FIG.

That is, in FIG. 5, reference numeral 1 denotes a box-shaped package such as a tape cassette or a disk cassette, and 2 denotes a film roll wound with an overlap film made of a heat-shrinkable / heat-bonding type PP (polypropylene). An overlap film 3 having a predetermined size is cut out from the roll 2, and the object to be packaged 1 is wrapped in a so-called caramel packaging form by the overlap film 3.

In an automatic lapping machine,
After the article to be packaged 1 is wrapped with the overlap film 3, the overlapping portion at the end of the overlap film is sealed by heat treatment (heat sealing).

[0005] As described above, an overlap film for wrapping an article to be packaged is generally provided with a cut tape for smooth opening, but recently, an overlap film which does not require the cut tape is used. (See, for example, Japanese Patent Application Laid-Open No.
No. 4360).

FIG. 6 shows an example of a packaging structure using an overlap film which does not require the cut tape.

[0007] The overlap film 3 is a generally used heat-shrinkable and heat-adhesive film such as PP or the like, and forms a box-shaped packaged object 1 such as a tape cassette or a disk cassette in a so-called caramel packaging form. Wrapped in

[0008] The overlap film 3
Heat sealing is performed at the part where the ends are overlapped on the front side of the packaged object 1 (seal portion 4 indicated by oblique lines), and heat sealing is performed at the part where the ends are overlapped on the side surface of the packaged object 1 in a folded state. (Sealed portion 5 indicated by oblique lines), whereby the article to be packaged 1 is packaged in a sealed state.

In the packaging structure using the overlap film 3, as is apparent from FIGS. 6 and 7, a part of the front seal part 4 has an opening part 6.

That is, the seal portion 4 is composed of an adhesive portion 4a formed by heat sealing and an opening portion 6 formed at the center between the adhesive portions 4a. And the like, and the seal portion 4 is peeled off.

The opening portion 6 is formed on the inner surface (sealing surface) of the overlapped film which overlaps the upper side in the sealing portion 4.
It is formed by performing solid printing in an arrow shape on the side.

That is, as shown in FIG. 9, by applying solid printing 7 on the sealing surface side of the overlap film 3, the non-printed portion has a perfect heat sealing property. The part loses the heat sealing property at all, that is, the part becomes a non-adhesive part.

The opening 6 formed by solid printing as described above is subjected to heat shrinkage during the heat treatment, as shown in FIGS.
As shown in FIG. 10, the seal portion 4 can be peeled off by hooking a fingernail or the like on the opened opening portion 6 as shown in FIG. 10, and the overlap film 3 can be easily removed.

[0014]

However, in the conventional packaging structure using the overlapping film, the opening 6 is not sealed at all, and thus is greatly turned up when thermally shrunk.

If the opening portion 6 is greatly turned up in this way, the opening portion 6 may be caught in some way during distribution or display at a store, and the seal portion 4 may be unexpectedly peeled off.
The appearance is also poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a packaging structure using an overlapping film whose opening portion is appropriately turned up, and to solve the above problems. .

[0017]

According to the present invention, there is provided a packaging structure having a sealing portion for wrapping an object to be packaged with an overlap film and overlapping and sealing the ends. A part of the seal part is provided with an opening part which has become a non-adhesion part by solid printing, and furthermore, a weak adhesion part by halftone printing is provided on both sides of the opening part and the part is opened at the opening part. A display portion indicating that the mouth is provided is provided, and the display portion also serves as a weak adhesive portion.

With such a structure, the opening is easy to open, and the opening is kept in a moderately turned state. Therefore, the opening is caught during distribution and the seal is unexpectedly peeled off. The risk of occurrence is reduced, and the appearance is improved.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows the most preferred embodiment of a packaging structure using an overlap film according to the present invention.
The basic packaging structure in this example is the same as the above-described conventional example.

The overlap film 3 is a heat-shrinkable / heat-adhesive film, such as PP, which is generally used, and is used to form a box-shaped packaged article 1 such as a tape cassette or a disk cassette into a so-called caramel package. Wrapped in

And this overlap film 3 is
Heat sealing is performed at the portion where the ends are overlapped on the front side of the packaged object 1 (seal portion 4 indicated by oblique lines), and heat sealing is performed at the portion where the ends are overlapped on the side surface of the packaged object 1 in a folded state. (The seal portion 5 indicated by oblique lines), whereby the article to be packaged 1 is packaged in a sealed state.

In the packaging structure using the overlap film 3, as is apparent from FIGS. 1 and 2, a part of the front seal part 4 has an opening part 6.

That is, the seal portion 4 is composed of an adhesive portion 4a formed by heat sealing and an opening portion 6 formed at the center between the adhesive portions 4a. And the like, and the seal portion 4 is peeled off.

The opening 6 is formed on the inner surface (sealing surface) of the overlapped film which overlaps the upper side of the sealing portion 4.
It is formed by performing solid printing in an arrow shape on the side.

That is, as shown in FIG. 4, by applying solid printing 7 on the sealing surface side of the overlap film 3, the non-printed portion has complete heat sealing properties, whereas the solid printing 7 has The part loses the heat sealing property at all, that is, the part becomes a non-adhesive part.

The opening 6 formed by solid printing in this manner is turned up by heat shrinkage during the heating process. At the time of opening, a fingernail or the like is hooked on the opened opening 6 to seal it. By peeling off the portion 4, the overlap film 3 can be easily removed.

Here, in the prior art, the above-mentioned problem has occurred due to the large turn-up of the opening 6, but in the present embodiment, in order to keep the turning-up of the opening 6 at an appropriate level, a special form is required. Printed.

That is, in this example, as is clear from FIG.
Near the center of the arrow-shaped solid printing portion of the opening 6,
As a display portion indicating that this portion is an opening, "O
There is a character "PEN", and this character portion is formed by halftone dot printing.

This halftone printing is a printing form in which printing is performed in a halftone pattern using a printing varnish, and this halftone printing 8 is printed on the sealing surface side of the overlap film 3 as shown in FIG. By applying, the overlap film 3
Is partially heat-sealed in the gap between the halftone dots, that is, the halftone print 8 has a heat seal property intermediate between the non-printed portion and the solid printed portion (half seal).

Accordingly, the portion of the character "OPEN" formed by the halftone dot printing is a weakly adhered portion 9 formed by a half seal.

As described above, the “OPE”
Since the portion of the letter "N" is the weak adhesive portion 9, as shown in FIGS. 2 and 3, the opening portion 6 is kept in a moderately turned state without being greatly turned. This is apparent from comparison with FIGS. 7 and 8 of the conventional example.

At the time of opening, the weak adhesive portion 9 can be easily peeled off by lightly hooking a fingernail or the like on the opening 6 so that the opening can be easily opened.

In this example, the portion of the character "OPEN" is used as the weakly bonded portion 9 by halftone printing, but the portion of the character "OPEN" is used as the non-printed portion (that is, the non-printed portion).
The weak adhesive portion 9 can also be formed by forming the character “OPEN” in a solid printing without printing (so-called white outline).

In this case, by forming the character of "OPEN" with a thin line or a dotted line, the weak adhesive portion 9 having the same heat sealing property as halftone printing can be obtained.

Further, in the packaging structure of this embodiment, FIGS.
As will be apparent from FIG. 2, weak adhesive portions 10 are formed by halftone dot printing on both left and right sides of the arrow-shaped solid printing portion of the opening portion 6 of the seal portion 4.

By this, when the fingernail or the like is hooked on the opening portion 6 at the time of opening, the weak adhesive portion 10 is easily peeled off, and the adhesive portion 4a is peeled off at a stretch following the weak adhesive portion 10, so that it is easier to use. Can be opened.

[0038]

As described above, the present invention wraps an object to be packaged and seals by overlapping the ends, and a part of the seal is provided with an opening which is a non-adhesive part by solid printing. In the packaging structure of the overlapping film, a weakly adhered portion is provided by halftone printing on both sides of the opening portion, and a display portion is provided in the opening portion to indicate that the portion is an opening portion. The opening is easy to open and is kept in a moderately curled condition by using a weak adhesive part, so the opening is caught at the time of distribution and display at the store, and the sealing part is unexpectedly peeled off. It is reduced and the appearance is improved.

Further, according to the present invention, since the weakly adhered portion in the opening portion serves as a display portion, the position of the opening portion can be clearly confirmed at the time of opening by using the display portion as a guide. Easy to do. It is needless to say that the display portion may have a pattern shape or a pattern shape such as an arrow in addition to the character shape.

[0040]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a most preferred embodiment of a packaging structure using an overlap film of the present invention.

FIG. 2 is a plan view of a main part (seal part) of the same.

FIG. 3 is a sectional view of a main part (opening opening) of the same.

FIG. 4 is an explanatory diagram of printing (solid printing, halftone printing) on an overlap film.

FIG. 5 is an explanatory diagram of a packaging process using an overlap film.

FIG. 6 is a perspective view showing a packaging structure using a conventional overlap film.

FIG. 7 is a plan view of a main part (seal part) of the same.

FIG. 8 is a cross-sectional view of the main part (opening opening).

FIG. 9 is an explanatory diagram of printing (solid printing) on an overlap film.

FIG. 10 is an explanatory diagram of opening the overlap film.

[Explanation of symbols]

1) Packaged material, 3) Overlap film, 4)
{Seal part, 4a} Adhesive part, 6} Unsealing opening part, 9}
Weak bond, 10 ° weak bond

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 71/08 B65B 53/00 B65D 75/62 B65D 85/00

Claims (1)

(57) [Claims] 1. A packaging structure having a seal portion that wraps an object to be packaged with an overlap film and seals by overlapping the ends, wherein a part of the seal portion is a non-adhesive portion formed by solid printing. An opening portion is provided, and furthermore, a weak adhesive portion by halftone dot printing is provided on both sides of the opening portion, and a display portion indicating that the portion is an opening portion is provided at the opening portion, and the display portion is also weakened. A packaging structure using an overlap film, characterized by an adhesive portion.