JPH0624420A - Packaging method by use of overwrapping film - Google Patents

Abstract

(57) [Summary] [Purpose] In a packaging method in which a packaged item is wrapped with an exterior film and the overlapping parts are heat-sealed to seal (heat seal), it is easy to peel off when opening the exterior film. To do. [Structure] The heat-bonding portion (heat-sealing area) of the exterior film 1 is subjected to, for example, halftone printing 10 to uniformly reduce the entire bonding area and reduce the bonding strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method for packaging various objects to be packaged with an exterior film, and more particularly to a packaging method which can be easily opened.

[0002]

2. Description of the Related Art For example, a cassette tape is shipped in a state in which a case is packaged with an exterior film for the purpose of protection during transportation or display at a store or improvement of appearance (design). Conventionally, packaging with this exterior film is shown in FIG.
The PP (polypropylene) exterior film 1 wound in a roll shape as shown in Fig. 7 is cut to a predetermined length a, thereby wrapping the object to be packaged as shown in Fig. 7, and partially overlapping the parts by heat. Adhesive (heat sheet) and sealed. In the figure, 2 is a center seal surface, 3 is a side seal surface, and the respective edge portions are seal areas 2a and 3a.
Has become. That is, although the exterior film 1 is normally color-printed on all sides, the seal areas 2a, 3a
No ink is placed on the sheet, and heat is applied to the seal areas 2a and 3a in a state in which the packaging object is wrapped with the packaging film, whereby the PP packaging film is melted and bonded.

[0003]

A product obtained by wrapping an object to be packaged with an exterior film and sealing it by heat bonding as described above has, for example, V on a part of the bonding portion on the center seal surface 2 as shown in FIG. The character-shaped notch 4 is provided, and the exterior film 1 can be peeled off by hooking a claw on the notch 4. However, conventionally, there is a problem that the adhesive strength of the adhesive portion is so strong that the adhesive portion cannot be easily peeled off and it takes a lot of time to open it.

In order to facilitate this opening, the conventional method shown in FIG. 8A is used.
There is also a case where a cut tape 5 is attached to the exterior film 1 as shown in Fig. 4, but in this case, when the exterior film is torn only along the cut tape as shown in Fig. 6B, the remaining exterior film has nails at the adhesive portion. Even if it is peeled off, it is very difficult to open. The present invention has been made for the purpose of solving such a problem.

[0005]

In order to achieve the above-mentioned object, the present invention is to wrap an article to be packaged with an exterior film,
In a packaging method in which overlapping portions are heat-bonded and sealed, the heat-bonded portion is printed (for example, halftone printing) so as to reduce the area of the entire bonded portion substantially uniformly.

[0006]

According to such a method of the present invention, the adhesive strength at the heat-bonded portion is lowered, so that the exterior film can be easily peeled off from the bonded portion, and the unsealing can be performed easily.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to FIGS. 1 to 5, and the same reference numerals are given to the portions corresponding to those of the conventional example shown in FIGS. 1 and 2 show the most preferred embodiment of the present invention. In this example, as will be apparent from the drawings, the center seal surface 2 and the side seal surface 3 of the exterior film 1 are bonded to each other by adhesion (welding by heat). Surface, ie the sealing areas 2a and 3a shown in FIG. 6)
On the entire surface, so-called halftone printing 10 is applied. still,
Ordinary so-called solid printing is applied to the portion 11 other than this halftone printing portion.

By applying the halftone printing to the adhesive portion of the exterior film 1 in this way, when the adhesive is applied by applying heat, the portion on which the ink is placed is not attached, and the portion on which the ink is not applied is dotted. It will be glued. For this reason, the entire adhesive area is reduced substantially uniformly, and as a result, the adhesive strength is lowered as compared with the conventional one, so that the exterior film 1 can be easily peeled from the notch portion 4 of the center seal surface 2. Also on the side seal surface 3, the exterior film 1 can be easily peeled off by raising a nail.

FIG. 3 shows a modification of the embodiment shown in FIGS. 1 and 2. In this example, only a part of the adhesive portion in the vicinity of the cutout portion 4 is not the halftone printing portion 10 but the solid printing portion, that is, this portion is in a range that is not adhered even if heat is applied,
The claws can be easily hooked on the notch 4 when opening.

Further, FIG. 4 shows an embodiment of the exterior film having the cut tape 5. In this case, even if the cut tape 5 is torn as shown in FIG. The exterior film 1 can be peeled off again from this portion. Also this cut tape 5
Even in the case of having the above, the opening can be further facilitated by changing a part of the vicinity of the cut tape 5 in the adhesive portion from the halftone printing 10 to the solid printing portion as shown in FIG.

In each of the above embodiments, the adhesive strength can be arbitrarily set by changing the fineness of the halftone printing. Further, in the embodiment, the halftone printing is exemplified as the printing method for uniformly reducing the adhesive area of the adhesive portion,
This printing is not limited to halftone printing, and other printing patterns (for example, stripes) can be considered.

[0012]

As described above, the present invention is a packaging method in which an article to be packaged is wrapped with an exterior film and the overlapped portion is sealed by thermal bonding. Since the adhesive strength is reduced by performing printing so as to uniformly reduce the adhesive area, the adhesive film can be easily peeled off and removed when the exterior film is opened. Further, in particular, in the case of an exterior film on which a pattern or the like is printed on the entire surface, only a part of the exterior film needs to be halftone printing or the like, which has an advantage that it can be implemented without increasing the cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment.

FIG. 2 is a side view showing an embodiment, where A is a center seal surface and B is a side seal surface.

FIG. 3 is a side view showing another embodiment.

FIG. 4 is a side view showing an embodiment having a cut tape.

FIG. 5 is a side view showing another embodiment having a cut tape.

FIG. 6 is an explanatory diagram of a packaging film.

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

FIG. 8 is a perspective view showing a conventional example having a cut tape.

[Explanation of symbols]

 1 Exterior film 2 Center seal surface 3 Side seal surface 10 Ami printing

Claims (1)

[Claims] 1. A packaged object is wrapped with an exterior film,
In the packaging method in which the overlapped portion is heat-sealed to be sealed, the heat-bonded portion is subjected to printing so as to reduce the bonding area of the whole heat-bonded portion substantially uniformly, and the unsealing is performed by lowering the bonding strength. A packaging method using an exterior film, which is characterized by being easy to carry out.