JP3721692B2 - Packaging method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging method for an object to be packaged such as a cassette case, and more specifically, a non-adhesive opening is formed in a part of an adhesive portion for sealing a packaging film, and the opening is opened at the opening. By forming a cut line as a trigger and forming spot-like adhesive parts on the left and right non-adhesive parts of the cut line, it is possible to prevent the opening from being deformed due to heat shrinkage during shrink wrapping of the package and the opening The opening operation is not impaired.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when commercializing and selling audio tape cassettes, video tape cassettes, and the like, for example, cassette cases containing such cassettes are sold in a state of being shrink-wrapped with a packaging film (decorative film).
[0003]
As this type of packaging film, a film material made of polypropylene (PP) or the like and having excellent toughness and thermal adhesiveness is used, and a cassette case as an article to be packaged is shrink-wrapped. The packaging film is sealed by thermally bonding the overlapping surface at a temperature of 120 to 130 ° C., for example.
[0004]
By the way, as a general method for opening a packaging film in which a cassette case is packaged, a cutting tape is inserted into the packaging film in advance, and at the time of opening, the tip of the cutting tape is picked with a fingertip and pulled in a predetermined guiding direction. Is torn along the cut tape and opened. However, in the case of using a cut tape, it becomes difficult to pinch the tip of the cut tape in a state of being adhered on the packaging film. Alternatively, if the packaging film is torn around by the cut tape, the packaging film remains on the cassette case side, and it takes time to remove the remaining packaging film.
[0005]
On the other hand, as an unsealing method without using a cut tape, for example, a packaging method disclosed in JP-A-8-72930 has been proposed. Hereinafter, a description will be given with reference to FIG.
[0006]
A packaging film 2 in which a cassette case 1 which is an object to be packaged is shrink-wrapped is sealed at the body front 3 and left and right side surfaces 4 and 5. At the body front 3, both end portions of the packaging film 2 are overlapped, and the overlapped surface is heat-sealed to form an adhesive portion 6. A non-adhesive portion of the packaging film 2 is formed at the central portion of the adhesive portion 6, and the non-adhesive portion is formed to serve as an opening 7 when the packaging film 2 is opened. On the left and right side surfaces 4 and 5, the packaging film 2 is packaged so as to wrap the caramel, for example, and the overlapping surface is heat-sealed to form the adhesive portion 8.
[0007]
[Problems to be solved by the invention]
By the way, the packaging film as described above is made of, for example, oriented polypropylene (OPP) which is thermally shrunk at the time of shrink wrapping for the purpose of improving the merchantability by tightly adhering to the cassette case 1 and packaging. . In this case, in the packaging method as described above, the non-adhesive portion as the opening 7 for inserting a fingertip or the like at the time of opening is the edge of the opening 7 as indicated by the phantom line due to the thermal effect during shrink packaging. There is a problem that 7a contracts and is distorted and deformed to impair the appearance of the package.
[0008]
In addition, a fingertip or the like is inserted into the opening 7 to open the film by grasping the end of the film and tearing the packaging film. However, if the packaging film is a highly tough film such as polypropylene, it is not broken. If you try to tear the film forcibly, a strong force may be applied to the cassette case, causing a risk of breakage.
[0009]
The present invention has been made in order to solve the above-described problems, and prevents distortion of the opening due to thermal contraction during shrink packaging of an object to be packaged, and facilitates the opening operation of the opening. The purpose is to obtain a packaging method that can be surely performed.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the packaging method according to the present invention is provided with a non-adhesive portion that serves as an opening for opening at a part of the adhesive portion of the packaging film, and is a trigger for opening the packaging film at the non-adhesive portion. While forming a piercing line, the part of the non-bonding part of the left and right of a piercing line is adhere | attached with a temporary fixing bonding part.
[0011]
By doing in this way, even if the thermal influence at the time of shrink packaging arises, since the non-adhesion part is adhere | attached by the temporary fix | bonding adhesion part, it does not heat-shrink. Moreover, at the time of opening, a non-adhesion part peels off easily from the edge part of a cut line, and a packaging film can be cut off.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
In the following, embodiments of the packaging method according to the present invention when shrink-wrapping a cassette case with a packaging film will be described with reference to the drawings.
[0013]
FIG. 1 is an external perspective view of a cassette case in a packaged state, and the same components as those shown in the conventional example described in FIG.
[0014]
The packaging film 2 in which the cassette case 1 is shrink-wrapped is made of a transparent film material having toughness, thermal adhesiveness, and heat shrinkability such as oriented polypropylene (OPP), and the packaging film 2 in the packaged state is the cassette case. 1 is sealed at the body front surface 3 and the left and right side surfaces 4 and 5 corresponding to the longitudinal side surface of the first material.
[0015]
At the body front 3, both end portions of the packaging film 2 are overlapped, and the overlapping surface is heat-sealed to form the body bonding portion 6. Further, on the left and right side surfaces 4 and 5, the packaging film 2 is packaged so as to wrap the caramel, for example, and the side overlapping portion 8 is formed by heat sealing the outer overlapping surface.
[0016]
A non-adhesive portion having no adhesive force is formed at the central portion of the body adhesive portion 6, and this non-adhesive portion is formed to serve as an opening 10 when the packaging film 2 is opened. In this example, the opening 10 is formed in an arrow shape in the direction of opening the packaging film 2. The width of the opening 10 is set to about 20 to 30 mm so that the opening can be easily picked with a fingertip.
[0017]
Further, a short vertical cut line 11 is formed at the end of the film at the center of the opening 10 described above. The left and right film pieces separated by the formation of the cut line 11 become the peeling pieces 10a and 10a that trigger opening. The parts of the two peeling pieces 10a and 10a are partially bonded by spot-shaped bonding portions 12 and 12 as temporary fixing bonding portions, respectively.
[0018]
Here, as a method of forming the non-adhesive portion that is the opening 10, a printing method is used. That is, since the wrapping film 2 is melt-bonded by heat sealing, it is difficult to be bonded when printing is performed on the bonding surface, and the adhesive force can be adjusted by this printing method.
[0019]
FIG. 2 shows a developed state when the packaging film 2 before packaging is viewed from the back side, and printing is performed in this state.
[0020]
The portion of the body adhesive portion 6 positioned at the upper and lower ends of the packaging film 2 is in a transparent state where no printing is performed. Therefore, the packaging film 2 is packaged and the body adhesive portions 6 and 6 overlap each other. The parts are bonded with 100 percent adhesion by heat sealing.
[0021]
The entire surface of the non-bonded portion as the opening 10 is printed. As a result, even if the non-bonded portion overlaps with the body bonding portion 6 and is heat-sealed, the opening 10 remains unbonded. It should be noted that the cut line 11 is printed so that the color can be distinguished from the printing of the opening 10, whereby the position of the cut line 11 can be recognized.
[0022]
Further, the spot-like adhesive portions 12 and 12 of the opening 10 are not printed only on this portion. Therefore, the spot-like adhesive portion 12 overlaps with the body adhesive portion 6 and is heat-sealed and bonded 100%. .
[0023]
Moreover, it is the transparent state in which the printing of the part of the side part adhesion part 8 and 8 located in the right-and-left end part of the packaging film 2 is not performed, and this part wraps the packaging film 2 so that a caramel may be wrapped, The outer side The laminated surfaces are heat sealed and bonded with 100% adhesive strength.
[0024]
The entire remaining surface of the packaging film 2 is subjected to design printing or the like. Therefore, as shown in FIG. 1, the packaging film 2 sealed by heat-sealing the body adhesive portion 6 and the side adhesive portion 8 is not bonded to the cassette case 1 which is a package.
[0025]
That is, in the state in which the packaging film 2 is shrink-wrapped as shown in FIG. 1, the unbonded opening 10 has left and right peeling pieces 10 a and 10 a formed by the cut lines 11, which are spot-shaped adhesive portions. 12 and 12 can be temporarily bonded to each other, so that it is possible to prevent the peeled pieces 10a and 10a from rising or being distorted even if the entire packaging film 2 is thermally contracted due to the heat effect during shrink wrapping. . As a result, the appearance of the shrink-wrapped packaging film is not impaired.
[0026]
The opening operation of the wrapping film 2 is performed by rubbing the peeling piece 10a from the cut line 11 with a fingertip or the like at the opening 10 and picking the raised end portion to peel off the spot-like adhesive portion 12 and then cutting as shown in FIG. The packaging film 2 can be opened by tearing along the line 11. Since this opening operation can pick up the peeling pieces 10a and 10a and open them in the left and right directions, there is almost no remaining packaging film 2 and the packaging film 2 can be opened at a stretch and the opening performance can be improved.
[0027]
If the adhesive area of the spot-like adhesive portion 12 described above is too small, the adhesive strength of the peeling piece 10a is weakened, and the spot-like adhesive portion 12 is peeled off due to heat shrinkage of the packaging film 2 during shrink wrapping, and the peeling piece 10a rises. Then, distortion deformation occurs in the entire opening 10. On the other hand, if the adhesive area is too large, the adhesive strength of the peeling piece 10a is too strong and it becomes difficult to peel off. For this reason, the size of the spot-like adhesive portion 12 is preferably about 1.5 to 3.0 mmφ.
[0028]
Note that the cut line 11 formed in the opening 10 is not necessarily formed in the center portion, and for example, as shown in FIG. 4A, it is biased toward the left side (or right side, not shown) of the opening 10 in the vertical direction. Alternatively, the cut line 11 may be formed obliquely from the left end (or the right end, not shown) of the opening 10 as shown in FIG. 4B. In either case, the left and right peeling pieces 10a, 10a of the cut line 11 are bonded by the spot-like bonding portions 12, 12.
[0029]
As described above, according to the packaging method in which the packaging film 2 is shrink-wrapped, it is possible to prevent the peeling piece 10a from rising due to the thermal shrinkage of the packaging film during shrink packaging and the distortion deformation of the opening 10 and packaging. The appearance appearance of the film can be improved. Further, when opening, the cassette case 1 can be easily opened from the score line 11, and the cassette case 1 can be quickly taken out. For example, the recording or recording timing of the program being broadcast is not missed. .
[0030]
Moreover, the position of the cut line 11 can be easily recognized when the packaging film is opened by giving the cut line 11 a color that can be clearly distinguished from the printing of the opening 10.
[0031]
Furthermore, since a strong force is not required when the packaging film 2 is opened, the cassette case 1 can be prevented from being damaged.
[0032]
The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.
[0033]
In the embodiment, the spot-like adhesive portion 12 is circular, but other shapes such as a square shape may be used. Alternatively, although the adhesive strength is slightly weakened, it may be performed by halftone printing.
[0034]
In the embodiment, the case of a cassette case in which a tape cassette for video, an audio tape cassette, or the like is accommodated as an object to be packaged has been described. However, the present invention can be widely applied to various other methods for packaging an object to be packaged. is there.
[0035]
【The invention's effect】
As described above, the packaging method of the present invention can prevent distortion of the opening due to thermal shrinkage of the packaging film during shrink packaging, and can improve the appearance of the packaging film and increase the commercial value. Moreover, when opening, it can open easily from a score line, and there exists an effect that the to-be-packaged item can be taken out rapidly.
[0036]
Moreover, since a strong force is not required at the time of opening, the danger that a packaged item will be damaged can be eliminated.
[Brief description of the drawings]
FIG. 1 is a perspective view of a packaging state of a packaging film applied to the packaging method of the present invention.
FIG. 2 is a plan view of a packaging film in a developed state.
FIG. 3 is a perspective view of an opened state of the packaging film.
FIG. 4 is a front view of another example of A opening. B is a front view of still another example of the opening.
FIG. 5 is a perspective view of the packaging state of a conventional packaging film.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 cassette case, 2 packaging film, 6 trunk | drum adhesion part, 8 side part adhesion part, 10 opening (non-adhesion part), 10a peeling piece, 11 score line, 12 spot-like adhesion part

Claims (4)

In a packaging method in which an article to be packaged is packaged with a packaging film, and the overlapping surface of the exterior film is adhered and sealed,
A non-adhesive part that becomes an opening when the packaging film is opened on a part of the overlapping surface that becomes the adhesive part of the packaging film;
A score line that triggers the opening of the packaging film in the non-adhesive part,
A temporary fixing adhesive part for adhering the left and right non-adhesive parts of the score line in a spot shape;
A packaging method characterized by comprising: The packaging method according to claim 1,
The packaging method according to claim 1, wherein the temporary fixing adhesive part is bonded to a part of a peeling piece separated left and right by the cut line. The packaging method according to claim 1,
The packaging method, wherein the non-adhesive part is formed in the central part or one side of the adhesive part sealing the packaging film. The packaging method according to claim 1,
A packaging method, wherein the packaged object is a cassette case of a tape cassette.

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