JP2002120870A - Packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging which is suitable for packaging a thick article, easily and reliably unsealable without allowing an unsealing tape (string) to come off or be broken into pieces during the unsealing, capable of taking a protective measures from illegal unsealing, and suitable for registered mail for cash. SOLUTION: A plastic film 2 is laminated on a back side of at least an unsealing part 12 of the packaging 10, two half-cut lines 6 are formed on the laminate surface, a tearing part 11 is provided on an end of the half-cut lines 6, and an affixing portion of a flap 8 of the packaging 10 is surrounded by perforations 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package which is easy to open and has a protective measure against unauthorized opening.

[0002]

2. Description of the Related Art Postcards and letters have been used as a means of communicating one's intentions to the other party. In recent years, not only writing (fumi) but also pressed flowers and embroidery, strips and colored paper, celebration bags, and thin sheets such as ceramic plates have been used. Cases with crafts are increasing.

[0003] In such a case, the envelope used in the past has been insufficiently protected for mailing, and instead, a package has been used instead of the envelope. (Or thread), perforations (or zippers), and half-cut lines to facilitate opening.

[0004]

In the above-mentioned means for opening the package, the inserted opening tape or thread may come off,
There is a risk that the perforation (zipper) and the half-cut portion may be broken during opening.

Further, there is a problem that defense measures against unauthorized opening are insufficient, and it is difficult to detect even if the trace of unauthorized opening is repaired.

In view of the above problems, the present invention is suitable for packaging thick objects to be packaged, and can be easily and reliably opened without opening the opening tape (thread) at the time of opening and without breaking the middle.
It is an object of the present invention to provide a package with a tamper-resistant defense.

[0007]

According to the present invention, a plastic film is laminated on at least the back side of an opening portion of a package, and two half cut lines are formed on the laminated surface. A tear opening is provided at the end of the half-cut line, and the glued portion of the flap of the package is surrounded by perforations.

According to the present invention constructed as described above, when tearing and unsealing according to the two-line half-cut line, the unsealing can be easily and reliably opened without being cut off in the middle, and the periphery of the glued portion is perforated. Since it surrounds and forms a fake opening part, it is difficult to repair the erroneous opening by opening that part mistakenly as the opening part,
Immediately recognize that a spoof was opened.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. 1A is a perspective view of an embodiment of the present invention, FIG. 1B is a plan view, and FIG.
Is a perspective view of a state in which the opening portion has started to be torn, FIG. 3B is a partial cross-sectional view of the half-cut portion, FIG. 3 is a development view of the package of the present invention, and FIG. is there.

A base paper 3 (see FIG. 2B) obtained by laminating a polyethylene film 2 on the back surface of a white cardboard 1 as shown in a developed view shown in FIG. Half cut line 6 of the muscle (Fig. 2 (b)
See) and cut.

Next, a double-sided adhesive tape 7 is stuck on the back side surrounded by the perforation 5, leaving the release paper (not shown), wrapping the article to be packaged inside, peeling the release paper, and removing the flap 8. Affix to the package body 9 (when glue such as starch or PVA is used instead of the adhesive tape, no laminated layer is provided on the affixed portion).

When opening the package 10 enclosing the above-mentioned article to be packaged, the tear opening 11 shown in FIG.
Tearing as in (a). At this time, since the polyethylene film 2 is laminated on the cardboard 1, the torn portion is reliably torn without breaking the tear portion, and the tear line does not derail, but is torn cleanly and opened.

Here, the half cut line 6 corresponds to the package 1
0, the perforations 5 clearly appear on the front side, so that when viewed normally, the perforations 5 can be seen as opening means. For this reason, a person who intends to open the package regardless of whether it is legitimate or fraudulent will tear the perforation 5 as a means of opening, and if the fraudulent person notices it, he will not be able to repair it, It is clear that the package has been opened.

In the above embodiment, the perforation 5 is provided so as to reach the edge of the flap 8, but as shown in FIG. 4B, the perforation is surrounded so as to surround the sealing portion with an elongated ellipse. May be included.

Further, in the above embodiment, the cross section of the package is formed in an elongated spindle shape, but may be formed in an elongated rectangle. Here, the thickness (height) of the package is about 3 mm to 20 mm, and the thickness of the used cardboard is 0.2 mm to 2 mm, preferably 0.25 mm to 1 mm. When the thickness is smaller than the above range, the strength, particularly the strength of the half cut portion, becomes insufficient. When the thickness is larger than the above range, the handleability is low and the tearing at the half cut portion becomes difficult.

Although polyethylene is used for the plastic laminate layer, any material such as polypropylene or polyester that does not generate harmful gas upon combustion can be used. The thickness of the laminated film is from 10 μm to 100
μm, preferably about 15 μm to 50 μm. When the thickness is smaller than the above-mentioned thickness, there is a possibility that the sheet is torn when tearing for opening, and when the thickness is larger than the above-mentioned thickness, the base paper is warped, which is not preferable from an economic viewpoint.

The depth of the half cut is determined by setting the thickness of the base paper to 10
As 0, it is 30 to 60, preferably 40 to 55. When it is shallower than the above depth, it is difficult to tear, and when it is deeper, there is a problem in strength. Generally, when the thickness of the base paper is large, a deep half-cut is used, and when the thickness is thin, a shallow half-cut is used.

In the above embodiment, the material is cardboard, but an envelope with gore made of kraft paper can be used. In this case, a cardboard laminated with a polyethylene film is stuck on the back side of the flap of the envelope, and the opening means and the false opening means for perforation are provided at that portion.

In addition, corrugated cardboard may be used instead of the cardboard, and a foamed plastic sheet which does not generate harmful gas during combustion, such as foamed polyethylene, may be used.

[0020]

As described above, according to the present invention,
Laminate a plastic film on the back of the opening,
By forming two half-cut lines on this surface, it becomes possible to easily and reliably tear open without tearing in the middle of tearing, surround the glued part with perforations and form a fake opening part This makes it difficult to repair tamper-evident traces and makes it clear whether tamper-evidents have been opened. Therefore, the package of the present invention can be suitably used as a registered mail envelope.

[Brief description of the drawings]

FIG. 1A is a perspective view of a package according to the present invention, and FIG.
Plan view

FIG. 2 (a) is a perspective view of a tear opening start state,
(B) Enlarged sectional view of a half cut part

FIG. 3 is an expanded view of the same.

FIG. 4 (a) Explanatory view of a fake opening section (part 1) (b) Same as (part 2)

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cardboard 2 Polyethylene film 3 Base paper 4 Folding line 5 Perforation 6 Half cut line 7 Double-sided adhesive tape 8 Flap 9 Package body 10 Package 11 Tearing hole

Claims (6)

[Claims] 1. A package comprising a plastic film laminated on at least the back side of an opening portion of the package, two half-cut lines formed on the laminated surface, and a tear opening provided at an end of the half-cut line. 2. The package according to claim 1, wherein the glued portion of the flap of the package is surrounded by perforations. 3. The package according to claim 1, wherein a thick packaged object can be accommodated. 4. The package according to claim 1, wherein the cross section of the package is one of an elongated rectangular shape and an elongated spindle shape. 5. The package according to claim 1, wherein gores are formed on both sides of the package. 6. The package according to claim 1, which is applied to a registered mail envelope.