JP2001233346A - Envelope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an envelope wherein the envelope can be simply unsealed by easily pulling up a sealing piece when unsealing the envelope, wherein the envelope has effects for preventing it from being illegally unsealed as the sealing piece once peeled off is difficult to stick via an adhesive which is used at sealing. SOLUTION: Re-peelable adhesive means 8 which do not stick to each other in a normal state and peelably stick to each other with a pressure applied while they are overlaid are provided respectively on the sealing piece 4 and on an overlap surface 7 with a corresponding part 6 which faces the sealing piece 4 when sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an envelope having a single-sided opening and provided with a sealing piece.

[0002]

Conventionally, when a credit company or the like introduces a use statement or a new service to a customer, the statement of use or various catalogs are put in an envelope and mailed to each customer. Envelopes used when sending the usage statement or catalog are often of the type having a one-sided opening and provided with a sealing piece. When enclosing with such an envelope, the sealing surface and the corresponding part of the envelope body facing each other when the envelope is folded are attached to each other, and the encapsulant comes out of the envelope during the mailing process. In order to avoid such a problem, a permanent adhesive means using an adhesive or a pressure-sensitive adhesive having a strong adhesive force has been employed.

However, since the sealing piece is bonded to the corresponding part by the permanent adhesive means as described above,
To open the envelope on the side that received the envelope, forcibly raise the sealing piece or cut one side of the envelope,
For such an opening method, the sealing piece or the place where the sealing piece was bonded was broken or the paper was peeled off, so that it could not be properly opened, and in the method of cutting one side, chips were generated, There are inconveniences such as accidentally cutting the inclusion. Then, in order to eliminate the inconvenience at the time of opening, the sealing piece and the corresponding part at the time of sealing may be releasably bonded. However, in this method, after the sealing piece is opened after being opened, the sealing is performed again. Since the pieces can be pasted together, a problem arises in that it is difficult to prevent the act of illegally extracting or replacing the enclosure.

In view of the above circumstances, the present invention makes it possible to easily raise a sealing piece when opening an envelope, and it is extremely difficult to bond the sealing piece with the adhesive used at the time of peeling once the sealing piece is peeled off. It is an object of the present invention to provide an envelope which can be easily opened on the recipient side and has an effect of preventing unauthorized opening.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and is an envelope provided with a sealing piece in a one-sided opening type, and a corresponding portion facing the sealing piece at the time of sealing. Provided on each of the superimposed surfaces with a re-peelable adhesive means for adhering releasably by applying pressure in an overlapping state without adhering in a normal state. Thus, the above problem is solved. Then, in the present invention, it is preferable to dispose a non-adhesive portion without the re-peelable adhesive means at a position corresponding to the outer peripheral portion when the outer peripheral portion of the sealing piece or the sealing piece is overlapped. It is.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. In the figure, reference numeral 1 denotes a one-sided opening type envelope. As shown in FIG. 1, the sealing piece 4 is connected to the upper side of the opening side of the envelope paper 2 via a folded portion 3 as shown in FIG. The sealing piece 4 is provided so that it can be folded from the folding part 3 to the envelope lower paper 5 side, and the sealing piece 4 can be sealed by folding and bonding. Further, the pressure is applied to the overlapping surface 7 of the sealing piece 4 and the corresponding portion 6 of the envelope base paper 5 facing the sealing piece 4 in the sealing state without bonding in a normal state. A re-peelable bonding means 8 is provided, which is releasably bonded by applying.

The most preferable re-peelable adhesive means in the present invention is a pressure-sensitive adhesive used for information concealment postcards such as two-fold and three-fold. This is also referred to as a self-adhesive (Autohesion) pressure-sensitive adhesive, which generally comprises an aqueous emulsion such as an acrylic emulsion, a natural rubber latex, or a synthetic rubber latex, or a rubber latex. When applied, the polymers are of a type in which the polymers adhere to each other by self-diffusion, and embody re-peeling adhesion depending on the type of the composition and the degree of pressure. However, the removable adhesive of the present invention is not limited to this,
For example, an ultraviolet-curing pressure-sensitive adhesive whose main component is an acrylic monomer or oligomer and these components are polymerized by ultraviolet irradiation, or by applying pressure while heating synthetic resin films, the interface portion thereof It may be configured to be releasably bonded by temporary melting.

The re-peelable adhesive means 8 is formed, for example, by applying the self-adhesive pressure-sensitive adhesive by a printing machine and drying it by an infrared irradiation device. The releasable bonding means 8 are bonded to each other by superposing the releasable bonding means 8 on each other and applying a pressure more than necessary by using a pressing device such as a press device, whereby the sealing by the sealing piece 4 can be performed. Done. In addition, since the re-peelable bonding means 8 is to be peelably bonded, the sealing piece 4 can be easily opened by separating from the corresponding portion 6 by turning the sealing piece 4 after sealing, so that the sealing piece 4 and the periphery of the opening can be opened. The paper will not be torn or peeled, and will not damage the appearance of the opened envelope.

Further, as described above, the re-peelable adhesive means 8 does not generate an adhesive force in a normal state, and the pressure for the pressure is a high pressure which cannot be obtained by human power alone. Even if the sealing piece 4 is again overlaid on the corresponding portion 6 and pressed down by hand, the sealing piece 4 will not be bonded. That is, once the sealing piece 4 is peeled off, evidence of opening remains on the envelope itself, and the effect of suppressing unauthorized opening becomes extremely high.

In the drawing, reference numeral 9 denotes a non-adhesive portion where the removable adhesive means 8 is not provided, as shown in FIG. 1 when the outer peripheral portion 10 of the sealing piece 4 and the envelope lower paper 5 are sealed. It is arranged at a position corresponding to the outer peripheral portion 10. As a result, the outer peripheral portion of the sealing piece 4 is separated from the envelope sheet 5 in the sealed state as shown in FIG. The turning operation is facilitated. Note that the non-adhesive portion 9 has an outer peripheral portion 10 and
May be arranged at any one of the positions corresponding to, and is not always required.

[0011]

As described above, according to the envelope of the present invention, there is provided an envelope provided with a sealing piece in a one-side opening type,
Removable adhesive means for releasably bonding by applying pressure in a superposed state without bonding in a normal state to each superposed surface of a sealing piece and a corresponding part facing the sealing piece at the time of sealing. Is provided. As a result, even if the required pressure is applied and the package is sealed, the recipient can open the package very easily with a simple method of turning up the sealing piece without causing breakage or peeling, and pulling the sealing piece once. If it is peeled off, it cannot be re-attached with human power, and the evidence of opening will remain on the envelope itself, and the deterrence effect against unauthorized opening will be extremely high.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of an envelope according to the present invention.

FIG. 2 is an explanatory view showing a sealed state in a cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Envelope 4 ... Sealing piece 6 ... Corresponding part 7 ... Laminated surface 8 ... Removable adhesive means 9 ... Non-adhesive part 10 ... Outer edge

Claims (2)

[Claims] 1. An envelope provided with a sealing piece in a one-sided opening type, wherein the sealing piece and a corresponding portion facing the sealing piece at the time of sealing are not adhered to each other in a normal state without being bonded to each other. An envelope provided with re-peelable bonding means for releasably bonding by applying pressure in a superposed state. 2. The non-adhesive portion without the re-peelable adhesive means is arranged at the outer peripheral portion of the sealing piece or at a position corresponding to the outer peripheral portion when the sealing pieces are overlapped. The described envelope.