JPH10114346A - Envelope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily unseal an envelope without use of scissors or the like or without bringing about dust in unsealing. SOLUTION: An envelope 10 is provided with a base material 11, an unsealing layer 12 formed at the external edge of the base material 11, and an adhesive layer 13 provided on the unsealing layer 12. The envelope 10 is sealed by turning back a folding-back line 11a and sticking mutual adhesive layers 13. The ply adhesive force of the unsealing layer 12 is formed weaker than the breakage force of the base material 11. The unsealing layer 12 is broken by pulling the stuck external edge of the envelope 10 and it is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an envelope in which an object to be sealed is housed and which can be opened without breaking a base material.

[0002]

2. Description of the Related Art Various forms of envelopes have been proposed. The method of opening the envelope is mainly the following 2
It is roughly divided into two. The first method is to open the envelope by cutting the sealed portion with scissors or the like. In this case, an envelope in which a cutting line or the like is displayed in advance is known.

[0003] A second method is to form a perforation on the outer periphery of the envelope and cut the perforation at the time of opening the envelope.
This is a method of opening the envelope without using scissors or the like. That is, in any of the above methods, the envelope is opened by cutting a part of the base material of the envelope.

[0004]

However, in the above-mentioned conventional envelope, the first method requires the use of scissors or the like, which is inconvenient to open, and the cutting line is shifted from the line to be cut. Then, there was a problem that even the enclosed thing was cut. On the other hand, in the second method, the envelope can be opened without using scissors or the like. However, since the perforations are provided on the outer peripheral portion of the envelope, there is a problem that the envelope must be formed one size larger than the object to be enclosed. Further, in any of the first and second methods, a part of the envelope base material is cut at the time of opening, so that there is a problem that the part becomes dust.

An object of the present invention is to easily open an envelope without using scissors or the like and generating dust at the time of opening.

[0006]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a base material which is formed in an envelope-like body and which can store an object to be sealed therein, A sealing portion that is provided in a part and can be sealed by a part of the base material being in close contact with each other; an opening layer provided on a predetermined region of the sealing portion of the base material; Is provided on a region overlapping with the unsealing layer on the sealing layer or at the time of sealing the sealing portion,
An adhesive layer for sealing the sealing portion of the base material, wherein the base material and the adhesive layer, or the sealing portion of the base material by bonding the adhesive layers to each other Is sealed, and the interlayer bonding force of the opening layer is weaker than the breaking force of the base material.

The invention according to claim 2 is formed in an envelope-like body,
A base material capable of storing an object to be sealed therein, a sealing portion provided on a part of the base material, and sealable by partly contacting the base material with each other; An adhesive layer is provided in a predetermined region of the sealing portion for sealing the sealing portion of the base material, and the base material and the adhesive layer, or the adhesive layers are bonded to each other. The sealing portion of the base material is thereby sealed, and the adhesive force between the adhesive layers, or the adhesive force between the base material and the adhesive layer, is weaker than the destructive force of the base material. And

[0008] The invention of claim 3 is claim 1 or claim 2.
In the envelope described in the above, the base material is formed into an envelope-like body by being folded or folded in three or more, and the sealing portion of the base material has three sides other than the folding line of the base material. The opening layer and the adhesive layer according to claim 1 are provided at an outer edge portion, and the adhesive layer according to claim 2 is provided at an outer edge portion of the three sides. Features.

In the first aspect of the present invention, when the envelope is opened, the sealing portion is separated by the interlayer breaking of the opening layer. In the invention of claim 2, when the envelope is opened, the sealing portion is separated by peeling off the adhesive layers or between the base material and the adhesive layer. According to the third aspect of the present invention, the envelope is sealed by folding the base material in two or three or more and bonding the outer edges of the three sides other than the folding line.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of an envelope according to the present invention. FIG.
FIG. 2 is a sectional view showing an AA section in FIG. 1 in detail. FIG.
Indicates the inner surface side of the envelope 10. The envelope 10 includes a base material 11, an opening layer 12 and an adhesive layer 13 provided on the base material 11.

The base material 11 is formed from a general paper material, synthetic paper, a resin sheet, or a laminate thereof.
It has the necessary strength as an envelope. In addition, approximately in the center of the base material 11, a return line 11
a is formed. The turn-back line 11a is a portion formed so as to be turnable by forming a perforation, pressing, or the like. Further, although not shown, a printing area for printing the name and the like of the recipient of the envelope 10 is formed on the back surface of the substrate 11 (the front surface of the envelope 10) in the figure. In addition, a corner cut portion 14 in which a part of the base material 11 is cut out is formed at one corner of the base material 11 for easy opening after sealing.

The opening layer 12 (shaded area in FIG. 1)
It is provided in a band shape so as to surround the outer edge on the inner surface side of the base material 11. The opening layer 12 is a fragile layer that is broken by a relatively weak force when a tensile force acts on the upper and lower sides of the layer, and has a strength that is not broken by a load received when the envelope 10 is sent by mail or the like. It is a layer which has. Further, the unsealing layer 12 is a layer having low adhesion to the base material 11 and the adhesive layer 13. As the opening layer 12, for example, varnish is used.

The adhesive layer 13 is for sealing the envelope 10, and is provided linearly in a part (or all) of the opening layer 12. Examples of the adhesive layer 13 include phenolic resins, melamine resins, and other thermosetting resins, polyvinyl acetate resins, polyvinyl alcohol resins, and other thermoplastic resins, rubbers such as butadiene-acrylonitrile rubber, glue, natural resins, and casein. , Sodium silicate, dextrin, starch, gum arabic and the like can be used. Further, a heat-sensitive adhesive such as polyethylene, polyvinyl acetate or a copolymer thereof may be used. In addition, these adhesives may be any of a solution type, an emulsion type, a powder type, a film type, and the like, and may be any of a room temperature solidification type, a solvent volatile solidification type, and a fusion solidification type. The adhesive layer 13 has an adhesive force for strong adhesion when the adhesive layers 13 are bonded to each other or when the adhesive layer 13 and the base material 11 are bonded to each other.

Next, a method of using the envelope 10 will be described. First, the name and the like of the recipient are printed on the outer surface side of the envelope 10. Next, as shown in FIG.
1, the object to be sealed 20 is placed. Then, the base material 11 is folded from the folding line 11a. Here, substrate 1
1 is folded back so that the object 20 to be sealed is arranged between the base materials 11 as indicated by arrows in FIG. Then, when the outer edge of the envelope 10 is pressure-bonded after the folding, the adhesive layers 13 are adhered to each other, and the folded line 1 of the envelope 10 is formed.
The outer edges of three sides other than 1a are bonded. FIG. 4 is a perspective view showing the state of the envelope 10 at this time.

When opening the envelope 10, the recipient of the envelope 10 separates the bonded outer edge of the base material 11. Here, by separating from the corner cut portion 14, separation can be easily started. As a result, as shown in FIG. 5, the bonded outer edge of the envelope 10 is separated. At this time, the substrate 11 is not broken. Then, the recipient can take out the enclosed object 20.

Here, the opening is performed for the following reason. As described above, the adhesive layer 13 and the opening layer 1
2, the bonding strength between the opening layer 12 and the bonding force between the base material 11 and the opening layer 12, the breaking force of the base material 11, the base material 11 and the adhesive layer 13 And the adhesive force between the adhesive layers 13. Therefore, when a tensile force (in the thickness direction) at the time of opening acts on the outer edge of the envelope 10, the adhesive layers 13 are separated, or the layers of the opening layer 12 are broken before the base material 11 is broken, or The opening layer 12 is separated from the base material 11 and the adhesive layer 13. Therefore, the outer edge portion is opened without tearing the base material 11 or the like.

It is also possible to provide only the adhesive layer 13 without providing the opening layer 12. As the adhesive layer 13 at this time, an adhesive that can be peeled off after bonding may be used. The adhesive force may be set so that the base material 11 is not broken and the adhesive layer 13 or the adhesive layer 13 and the base material 11 are separated. Examples of such an adhesive include a conventionally known pressure-sensitive adhesive. Further, it is preferable that the adhesive layer 13 after peeling does not remain sticky.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications such as the following can be made within an equivalent range. (1) In the embodiment, the unsealing layer 12 and the adhesive layer 13 are provided in the overlapping region of the outer edge portion of the base material 11, but may be provided on at least one of the overlapping surfaces. (2) In the embodiment, the shape of the envelope 10 has been described as an example in which the base material 11 is folded in two. However, as long as at least a part is opened, such as a three-fold form,
Any form may be used. (3) In the embodiment, the adhesive layer 13 is provided linearly on the opening layer 12, but may be provided in a spot shape, for example.

[0019]

According to the first or second aspect of the present invention,
It is possible to prevent dust from being generated when the envelope is opened.
Further, since scissors or the like are not required at the time of opening, the ease of opening can be improved. Further, it is not necessary to form perforations for opening on the base material. According to the invention of claim 3, the form of the envelope of the present invention can be simplified. In addition, the object to be sealed can be easily taken out after opening.

[Brief description of the drawings]

FIG. 1 is a developed perspective view showing an embodiment of an envelope according to the present invention.

FIG. 2 is a sectional view showing an AA section in FIG. 1 in detail.

FIG. 3 is a perspective view showing a state where an object to be sealed 20 is placed on a base material 11 of an envelope 10;

FIG. 4 is a perspective view showing a state when the envelope 10 is sealed.

FIG. 5 is a perspective view showing a state when the envelope 10 is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Envelope 11 Base material 12 Layer for opening 13 Adhesive layer 14 Corner cut part 20 Enclosure object

Claims (3)

[Claims] 1. A base material formed in an envelope-like body and capable of storing an object to be sealed therein, provided on a part of the base material, and sealed by a part of the base material being in close contact with each other. A possible sealing portion, an unsealing layer provided on a predetermined region of the sealing portion of the base material, and on the unsealing layer or in a region overlapping with the unsealing layer when the sealing portion is sealed. And an adhesive layer for sealing the sealing portion of the base material, wherein the base material and the adhesive layer, or the adhesive layer is adhered to each other, the base material of the An envelope, wherein a sealing portion is sealed, and an interlayer bonding force of the opening layer is weaker than a breaking force of the base material. 2. A base material formed in an envelope-like body and capable of storing an object to be sealed therein, provided on a part of the base material, and sealed by a part of the base material being in close contact with each other. A possible sealing portion, and an adhesive layer provided in a predetermined region of the sealing portion of the base material for sealing the sealing portion of the base material, wherein the base material and the adhesive The sealing portion of the base material is sealed by bonding the layers or the adhesive layers to each other, and the adhesive force between the adhesive layers or the adhesive force between the base material and the adhesive layer is An envelope weaker than the destructive force of the substrate. 3. The envelope according to claim 1, wherein the base material is formed into an envelope by being folded in two or three or more, and the sealing portion of the base material is , Is provided at the outer edge of three sides other than the folding line of the base material, The opening layer and the adhesive layer according to claim 1, and the adhesive layer according to claim 2, An envelope provided at three outer edges.