JPH0798542B2 - Film packaging - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a seal portion of a packaging body that can be easily opened and resealed, and is easy to open, so that an object to be packaged can be easily packaged. The present invention relates to a structure of a seal portion of a packaging body that enables easy use of the packaging body from which an object to be packaged is taken out, for example, as a waste container that requires sealing because it can be easily taken out and can be easily resealed.

[Conventional technology]

As the prior art relating to the structure of the seal portion of the film package, described in JP-B-51-35462, JP-B-47-20614, JP-B-55-56263 and JP-B-55-179144. Those things are known.

Among these conventional techniques, Japanese Utility Model Publication No. 51-35462 discloses that seal portions are provided at intervals in an intermittent manner.

In addition, Japanese Utility Model Laid-Open No. 47-20614 discloses a seal portion composed of a plurality of rows of intermittent seal lines.

Further, in Japanese Utility Model Application Laid-Open No. 55-56263 and Japanese Utility Model Application Laid-Open No. 55-179144, an adhesive (pressure-sensitive adhesive) is used for the lid piece and the bag body.
It is disclosed that it can be sealed and opened and resealed.

[Problems to be solved by the invention]

However, among the above-mentioned conventional techniques, the Japanese Utility Model Publication No. 51-3546
In the cases described in Japanese Patent Laid-Open No. 2 and Japanese Utility Model Laid-Open No. 47-20614, the seal portion cannot be easily opened or resealed.

Further, in those disclosed in Japanese Utility Model Publication No. 55-56263 and Japanese Utility Model Publication No. 55-179144, since a pressure-sensitive adhesive (pressure-sensitive adhesive) is continuously arranged, a film having low strength, etc. A package made of, for example, a thin low-density polyethylene film has a problem that the film is broken when opened and cannot be resealed, and cannot be used as a waste container requiring sealing, for example.

Therefore, an object of the present invention is to seal a package that can be easily resealed without tearing the film at the time of opening, and for example, can be used as a waste container requiring sealing, for a package that has been taken out of a package. It is to provide the structure of the part.

[Means for solving problems]

The present invention mainly comprises a rectangular flat package body 4 having an opening 3 formed on one side, and one surface of the package body 4 is extended from one edge of the opening 3 to form a lid piece 5. The lid piece 5 is formed so as to straddle the opening 3 to close the opening 3, and the back surface of the lid piece 5 and the lid piece 5 are formed.
In the film wrapping body 1 which is provided with a seal portion 6 which seals between the surface of the package body 4 and the surface of the package body 4 which does not exist, on any one of the back surface and the surface of the seal portion 6. The pressure-sensitive adhesive 7 is continuously arranged, and the printed portion 8 is formed on the other surface. The pressure-sensitive adhesive 7 is linearly arranged in a direction parallel to one edge of the opening 3. The printing portion 8 is formed to have a width wider than the width of the pressure-sensitive adhesive 7 by intermittently printing 9, 9, ... In the same direction as the direction in which the pressure-sensitive adhesive 7 is arranged. When the opening 3 is closed by straddling the opening 3, the adhesive 7 is alternately contacted with both the area where the printing 9, 9, ... Is present and the area where it is not present. In addition, it is provided with high printing strength such that it is attached to the pressure-sensitive adhesive 7 and is not easily peeled off. It is obtained by achieving the above object by providing a beam package.

〔Example〕

Examples of the structure of the seal portion of the package of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a sealed state of a package to which an embodiment of the present invention is applied, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
FIG. 1 is a perspective view showing an opened state of the package of FIG. 1. In these drawings, 1 is a film package, and the package 1 is formed by folding one film so that both edges 2, 2 are formed. The main body is a package body 4 in which an opening 3 is formed in a portion facing the folded portion by fusing and sealing, and one surface of the package body 4 is extended from one edge of the opening 3 to form a lid piece 5. Lid piece 5
Is configured to straddle the opening 3 to close the opening 3, and between the back surface of the lid piece 5 and the surface of the package body 4 where the lid piece 5 does not exist between them. It is configured by providing a detachable seal portion 6 of the present invention for sealing.

That is, the removable seal portion 6 of the present invention in the embodiment.
Is provided between two films constituting the lid 5 and the film constituting the front surface of the package body 4 where the lid 5 does not exist, as shown in FIG. While arranging the adhesive 7 continuously on the surface, a printing part 8 with intermittent printing 9, 9, ... Is formed on the sealing surface of the latter surface, and both are attached and detached via the adhesive 7. It is constructed so that it can be freely sealed.

The sealing part 6 will be described in more detail. The film in the sealing part 6, that is, the film forming the package 1, is
It is preferably formed of a flexible heat-sealable thermoplastic resin, among which LDPE, L-LDPE,
Particularly preferably, it is formed of EVA. Further, such a film may be a thin film having a thickness of about 10 to 25 μm, which makes it difficult to peel off the seal portion with silicone.

As the pressure-sensitive adhesive 7, it is preferable to use a hot-melt adhesive, particularly a synthetic rubber-based hot-melt adhesive, and it is necessary that the temperature of use is the same as or lower than the melting point of the film. And, for example, the following hot melt adhesives A or B are used.

Softening temperature Melt viscosity (working temperature) A 72 ℃ 3800cp (120 ℃) B 92 ℃ 7000cp (120 ℃) Adhesive 7 is arranged continuously on the back surface of lid 5, and adhesive 7 is intermittent If it is arranged in the above position, the opening and resealing can be easily performed, but in this case, the sealing property of the seal portion cannot be obtained. The amount of the adhesive 7 applied is difficult to specify due to the difference in the material of the film and the type of the adhesive, but it is 1 to 3 mg per unit length (cm) of the opening 3 for easy opening. Is preferred.

Further, in the printing unit 8, when the opening 3 is closed by the lid piece 5, the adhesive 7 disposed on the back surface of the lid piece 5 is applied to the printing unit 8.
Is printed on the surface of the package body 4 with a predetermined width in the direction in which the opening 3 is closed so that the opening 3 is adhered to the central part of the package and the opening 3 is thereby sealed. It is configured by The prints 9, 9, ... In the printing unit 8 have the function of weakening the adhesive force of the adhesive 7 at the portions that come into contact therewith, and have the function of facilitating the opening. If it adheres to and is completely peeled off, there is a risk of hindering the resealing, so that the packaging body 4 is provided with high printing strength. For that purpose, corona discharge treatment may be performed, but when the film of the packaging body 4 is thin, this treatment is difficult. Therefore, an untreated printing ink having a high printing strength suitable for the material of the film is used. It is preferable to perform printing 9, 9 ,. Also printed above 9,9,
, As shown in FIG. 3, are wider than the width of the pressure-sensitive adhesive 7 in an intermittent manner in the same direction as the pressure-sensitive adhesive 7 is arranged. It should be noted that if the printing unit 8 is configured to perform continuous printing, in other words, if the printing unit 8 is configured to perform full-scale printing, printing 9, 9, ... Is continuous when opening. Since it adheres to the pressure-sensitive adhesive 7 applied to and is continuously peeled off, resealing cannot be performed.

In the package 1 configured as described above, since the lid piece 5 is bonded to the package body 4 via the adhesive 7 in the closed state, a packaged object (not shown) is placed inside the package 1. It is sealed. Then, the object to be packaged may be taken out by opening the lid piece 5. This opening is performed by the package body 4 as described above.
... is printed intermittently, and the adhesive strength of the adhesive 7 is weak at the corresponding locations, so it is easy to do without tearing the lid 5 and the film of the packaging body 4. Can be done.

When the package 1 is used as a waste container that requires sealing after the package is opened and the packaged item is taken out, the lid piece 5 may be resealed. Further, when the package is opened and a part of the article to be packaged is taken out and then resealed, the resealing may be performed similarly.
When resealed in this way, printing 9,9, ...
. Is applied intermittently, and therefore the adhesive 7 is printed only intermittently when printed 9,9, ... When opened.
Since the areas where 9,9, ... are not adhered are present in an intermittent manner, moreover, printing 9,9, ... Printing strength is high, printing 9,9, ..
Since only a part of .. is peeled off from the package body 4 and attached to the adhesive 7, the adhesive 9 still has sufficient adhesive force over its entire length and seals the opening 3. Therefore, resealing can be performed easily and surely.

It should be noted that it may be arranged in a width wider than the width of the pressure-sensitive adhesive intermittently in the same direction as the direction in which the pressure-sensitive adhesive is arranged in the structure of the seal portion of the package of the present invention, and the pattern may be, for example, It can be arbitrary as shown in FIGS. 4, 5 and 6. Further, in the embodiment, the adhesive 7 is arranged on the back surface of the lid piece 5, and the surface of the package body 4 is intermittently printed 9,9,
The printing section 8 provided with ... Is provided, but in the present invention, this is changed to provide the printing section 8 on the back surface of the lid piece 5,
The adhesive 7 is placed on the surface of the package body 4, or the printing portion 8 is provided on the surface of the package body 4 and the adhesive 7 is placed on the surface of the printing portion 8, or the back surface of the lid piece 5. It is also possible to provide the printing units 8 and 8 on both surfaces of the package body 4 and to dispose the adhesive 7 on the surface of either one of the printing units 8.
The position where the pressure sensitive adhesive 7 and the printing portion 8 are provided in the seal portion can be appropriately changed according to the shape and structure of the package. Further, the adhesive 7 has one line in the embodiment, but it may have a plurality of lines, and in that case, it can be provided on both the back surface of the lid piece 5 and the package body 4. Furthermore, in order to facilitate the opening of the package 1, as shown in FIG.
Is placed away from the edge of the lid piece 5, or
As shown in the figure, the opening piece 5'can be integrally formed at the edge of the lid piece 5. Further, the package to which the structure of the seal part of the present invention can be applied is not limited to the one having the lid piece 5 as in the embodiment, and the structure of the seal part of the package of the present invention is, for example, It is also possible to apply directly to the opening of the packaging body which consists of only the packaging body main body 4 without the piece 5.

〔The invention's effect〕

As described above, the structure of the seal part of the package of the present invention is such that at least one seal surface of two films of the package in the seal part is subjected to intermittent printing, and the seal faces of both films are placed between them. Since it is sealed via the adhesive placed in, it is surely sealed, and can be easily opened without breaking the film, and can be easily and surely resealed, therefore, According to the package to which the seal portion of the present invention is applied, the object to be packaged can be easily taken out, and the package that has taken out the object to be packaged can be used as a waste container requiring resealing, or can be partially covered. It has an outstanding effect that it can be resealed after the package is taken out.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sealed state of a package to which an embodiment of the present invention is applied, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
The figure is a perspective view showing the opened state of the package of FIG. 1, FIG.
5 and 6 are plan views showing a printing pattern different from the printing pattern shown in FIG. 3, respectively, and FIG. 7 is a perspective view showing a sealed state of a package different from that shown in FIG. 1, and FIG. Is the first
It is a perspective view which shows the sealing state of another package different from the thing of a figure. 1 ... Package 3 ... Opening 4 ... Package body 5 ... Lid piece 6 ... Removable seal 7 ... Adhesive 8 ... Printing 9 ... Printing

Claims (1)

[Claims] 1. A rectangular flat package body 4 having an opening 3 formed on one side thereof as a main body, and one surface of the package body 4 is extended from one edge of the opening 3 to form a lid piece 5. Is formed so that the lid piece 5 is straddled over the opening 3 to close the opening 3, and the back surface of the lid piece 5 and the package without the lid piece 5 are formed. A film wrapping body 1 provided with a seal portion 6 for sealing between the body body 4 and the surface thereof.
In the above, the pressure sensitive adhesive 7 is continuously arranged on one of the back surface and the front surface of the seal portion 6, and the printing portion 8 is formed on the other surface thereof. It is arranged linearly in a direction parallel to one edge of the portion 3, and the printing portion 8 prints intermittently in the same direction as the direction in which the adhesive 7 is arranged. Is formed to have a width wider than that of the adhesive 7, and when the lid piece 5 is straddled over the opening 3 and the opening 3 is closed, the adhesive 7 prints 9,9 ,. ..A film package characterized by being alternately contacted with both existing parts and non-existing parts, and having a high printing strength that is difficult to peel off by adhering to the adhesive 7 .