JPH0872930A - Packaging method - Google Patents

Abstract

PURPOSE: To easily and assuredly unseal a package by a method wherein an article to be packaged is wrapped by an external packaging film, and specified overlapped surfaces are heat-bonded to seal the package. CONSTITUTION: A totally non-adhered part 6 without adhering force is provided at one part of an overlapped surface (bonding surface) of an external packaging film 1, and the non-adhered part 6 is made an unsealing spot 5. At the time of unsealing, the tip (nail) of a finger is inserted in a gap of the unsealing spot 5, and the external packaging film 1 can be easily peeled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for wrapping various products with an exterior film, and more particularly to improving the openability.

[0002]

2. Description of the Related Art For example, an audio tape cassette and a video tape cassette are shipped and sold in a state in which a case accommodating the same is packaged with an exterior film (decorative film).

In this case, a film made of a material having a heat-adhesive property such as PP (polypropylene) is used as the exterior film, and the cassette case as the object to be packaged is wrapped with the film and heat is applied on a predetermined stacking surface. The parts are sealed by fusion bonding.

[0004] Conventionally, as a means for opening an outer packaging film in which an object to be packaged is packaged in this way, a so-called cut tape is inserted into the outer packaging film, and at the time of opening, the tip end of the cut tape is pinched with a fingertip and a guiding direction such as an arrow It is common to tear and peel along.

In recent years, a cut tape is not used, but a cut is made in a part of the adhesive portion, and a nail is hooked on the cut to break and peel off the exterior film.

[0006]

However, in the conventional means for opening the exterior film as described above, in the case of using the former cut tape, the tip of the cut tape is often adhered, and this is picked up. It is difficult to cut, or even if the cut tape is torn along the guide direction such as the arrow, the cut tape comes off from the film, and it cannot be torn in the desired direction. In addition, it is often the case that the cut tape is peeled in a circular shape without peeling it in the guide direction, for example, to remove the tobacco fill.In this case, it is difficult to remove the remaining film, and in case of a tape cassette, it is urgent. I often missed the timing when I recorded.

[0007] Further, in the latter case where the cut tape is deleted, it is difficult to open the opening part and it is difficult to open it unless it is repeatedly rubbed with a nail or the like.

The present invention has been made in view of the above points,
An object of the present invention is to provide a packaging method capable of easily and surely opening the outer packaging film without damaging it.

[0009]

In order to achieve the above object, the present invention provides a packaging method in which an article to be packaged is wrapped with an exterior film, and a predetermined overlapping surface is adhered and sealed.
A non-adhesive portion is provided on a part of the overlapping surface (adhesive surface) of the exterior film, and the non-adhesive portion is used as an opening.

[0010]

[Function] The opening has a gap because it is not adhered. When opening, the tip of the finger (nail) is inserted into this gap and the exterior film is turned up to easily peel the exterior film from the opening. And can be opened smoothly.

[0011]

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

In this example, a box-shaped object to be packaged (for example, a tape cassette case) is packaged with an exterior film 1. As a raw material of the exterior film 1, a transparent film made of PP (polypropylene) having a heat adhesive property at a temperature of 100 ° C. or higher is used, and a design printing (decorative printing) is applied to the transparent film.

The article to be packaged is wrapped with the exterior film 1, and the body front surface 2 and the left and right side surfaces 3 and 4 are hermetically sealed. On the front surface 2 of the body portion, the exterior film 1 is simply stacked in a state of wrapping the object to be packaged and the overlapping surface is bonded (hereinafter, the front surface 2 of the body portion is referred to as a body seal portion), while the left and right side surfaces 3 , 4, the exterior film 1 is folded so as to wrap the caramel, for example, and the overlapping surfaces are adhered (hereinafter, the left and right side surfaces 3, 4 are referred to as caramel seal portions).

The exterior film 1 is adhered to the body seal portion 2 and the caramel seal portions 3 and 4 by thermal adhesion. That is, when heat of 100 ° C. or higher is applied to the lapped surface of the exterior film 1, the film in this portion is melted and adhered, whereby a sealed state is obtained.

In the present embodiment, the opening 5 which serves as a trigger for opening the exterior film 1 is provided at the center of each of the body-tight seal portion 2 and the caramel seal portion 3.

The opening 5 is formed by providing a completely non-adhesive portion 6 having a zero adhesive force on a part of the overlapping surface (adhesive surface) of the exterior film 1. In addition, the non-bonded portion 6
The adhesive portions 7 on both sides of the
The original thermal adhesive strength of) is weaker.

In this example, a printing method is used as a means for forming the non-bonded portion 6 and the bonded portion 7 having a weak adhesive force as described above. That is, since the exterior film 1 is heated and melted and adheres as described above, it becomes difficult to adhere when printing is performed on the adhered surface, and the higher the density of the print, the weaker the adhesive strength.

In view of this, in this embodiment, as shown in FIG. 3, 100% of what is called solid printing or adhesive portion is formed on the back surface side of the overlapping portion of the exterior film 1 in the portion a which is the non-adhesive portion 6. The portion b designated as 7 is printed with about 40% halftone dots. Due to the printing as described above, when heat is applied to this portion, the portion a is hardly adhered, and the portion b is adhered with a weaker force than usual. Although only the print pattern in the caramel seal portion 3 is shown in FIG. 3 in this example, the print pattern in the body covering seal portion 2 is similar to this.

Since the opening 5 formed by providing the non-adhesive portion 6 having a zero adhesive force on the mounting surface of the exterior film 1 as described above has a gap in that portion, this gap is opened at the time of opening. By inserting the tip of a finger (nail) into and flipping up the exterior film 1, the adhesive portion 7 can be easily peeled off and easily opened. An arrow for guiding the opening direction is printed on the surface of the opening 5. Also,
The width of the opening 5 (width a of the non-adhesive portion) is preferably about 15 to 20 mm, which is easy to insert a finger.

Further, in this example, since the adhesive strength of the adhesive portion 7 is weaker than usual, it can be peeled off smoothly without requiring a strong force at the time of opening, and since it can be peeled off at once, there is no left behind. A quick and reliable opening is possible.

Further, since the opening 5 is formed by the non-adhesive portion 6, it can be clearly distinguished from the adhesive portion 7, so that it is easy to understand, and even an unfamiliar person can easily open the opening.

Further, in the present example, there is no break as a trigger for opening as in the conventional case, so that the appearance is good, and since no cut tape is used, it is also advantageous in terms of cost.

The opening 5 is not limited to the central portion, but may be provided at a position near one end as shown in FIG. Also,
In this example, the openings 5 are provided at two positions of the body tension seal portion 2 and the caramel seal portion 3, but it is needless to say that they may be provided at only one of them.

[0024]

As described in the above embodiments, according to the present invention, it is possible to perform a reliable opening without leaving the exterior film unpeeled, and it is possible to quickly remove the exterior film, and it is also possible to open the bag. Also, since the opening is easy to understand, even people who are not familiar with handling can easily open it. Further, according to the present invention, it is not necessary to provide a break as a trigger for opening unlike the prior art, so that the appearance is good, and the cutting tape can be deleted, which is advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment.

FIG. 2 is a side view seen from the caramel seal portion side.

FIG. 3 is a state in which the exterior film is peeled off at the caramel seal portion.

FIG. 4 is a side view seen from the side of the body seal portion.

FIG. 5 is another example of the formation position of the opening.

[Explanation of symbols]

 1 Exterior film 5 Opening port 6 Non-adhesive part 7 Adhesive part

Claims (3)

[Claims] 1. A packaging method in which an article to be packaged is wrapped with an exterior film, and a predetermined overlapping surface is adhered and sealed.
A packaging method, characterized in that a non-adhesive portion is provided on a part of the overlapping surface of the exterior film, and the non-adhesive portion is used as an opening. 2. The packaging method according to claim 1, wherein the adhesive portion on the overlapping surface of the exterior film is adhered with a force weaker than a normal adhesive force. 3. The packaging method according to claim 1, wherein the non-adhesion portion and the weak adhesion portion are formed by printing an exterior film.