JPH07304280A - Cover with adhesive - Google Patents

Abstract

(57) [Summary] [Purpose] The unit price can be reduced while the structure has an adhesive layer for bookbinding and an adhesive layer for binding the front sheet, and even when the front sheet is repeatedly opened and closed. , It is possible to effectively prevent the back sheet from being damaged from the folds on the front sheet side. [Structure] A front sheet 1, a back sheet 2 and a back sheet 3 are provided. The back sheet 2 and the back sheet 3 are continuously provided via a first fold portion 4, and the back sheet 3 is provided in front of the back sheet 3. While connecting the connecting sheet 6 with the front sheet 1 via the second fold portion 5, a thick adhesive layer 7 made of a hot-melt adhesive is formed on the inner surface of the back sheet 3, and also the connecting sheet 6 of the connecting sheet 6 is connected. The thin-walled adhesive layers 8 made of the hot-melt adhesive were continuously formed on the inner surface to reinforce the second folds 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive-attached cover sheet, more specifically, an adhesive-attached cover sheet that allows a user to easily bind sheets such as catalogs, plans, and documents stored at home. Regarding

[0002]

2. Description of the Related Art Conventionally, as an adhesive-attached cover sheet that allows a large number of unbound booklets such as catalogs to be easily bound in an office or at home, for example, Japanese Patent Publication No. 54-38.
It is already known as seen in Japanese Patent No. 929. As shown in FIG. 6, this conventional adhesive-attached cover sheet includes a front sheet A made of a transparent material, a back sheet B and a back sheet C made of an opaque material, and the back sheet B and the back sheet C are first folded. The narrow connecting sheet F with the front sheet A is continuously provided through the second fold portion E at the front portion of the back sheet C opposite to the back sheet side while being continuously provided through the eye portion D. Forming a first adhesive layer G made of a hot-melt adhesive on the inner surface of the sheet C, and forming a second adhesive layer H for connection made of a hot-melt adhesive on the inner surface of the connecting sheet F, The outer surface of one end of the front sheet A is adhered to the second adhesive layer H. When a large number of unbound booklets such as catalogs are bound on the adhesive-attached front cover, for example, the front sheet A and the back sheet B are erected with respect to the back sheet C, and the back sheet C is set.
The first adhesive layer G on the inner surface is covered with one side edge of a large number of paper sheets such as catalogs stacked in a predetermined thickness, and the outer surface of the spine sheet C is warmed with an electric heater to form the first adhesive layer G. By fusing, one side edge of each paper sheet is adhered to the first adhesive layer G for bookbinding.

[0003]

However, in the adhesive-attached cover sheet described above, the first and second adhesive layers G and H, which are independent of each other, are formed on the inner surface of the back sheet C and the inner surface of the connecting sheet F, respectively. Therefore, when manufacturing a cover with an adhesive, as described in the above patent publication, the first adhesive supply device for the first adhesive layer and the second adhesive supply device for the second adhesive layer are separately provided. It is necessary to form the first adhesive layer G with the first adhesive agent supply device and then form the second adhesive layer H with the second adhesive agent supply device.
Therefore, not only the structure of the cover manufacturing apparatus becomes complicated, but also
There has been a problem that the number of adhesive supply steps is increased, and the unit price of the adhesive-attached cover sheet produced by the cover sheet production apparatus is increased. Also,
When checking the contents of the sheets bound on the cover, the front sheet A is mainly opened in a developed state or closed in a folded state with respect to the back sheet C. Since the adhesive layer is not formed at the second fold portion E of the sheet and is exposed, when the front sheet A is repeatedly opened and closed, the second fold portion E is particularly damaged. There was also an easy problem.

An object of the present invention is to have a structure having an adhesive layer for binding a book and an adhesive layer for bonding a front sheet, but at the same time, the unit price can be reduced and even when the front sheet is repeatedly opened and closed. The point is that the back sheet can be effectively prevented from being damaged from the fold portion on the front sheet side.

[0005]

In order to achieve the above object, the present invention provides a front sheet 1 made of a transparent material,
The back sheet 2 and the back sheet 3 are made of an opaque material, and the back sheet 2 and the back sheet 3 are connected to each other through a first fold portion 4, and a second fold portion is provided at a front portion of the back sheet 3. While connecting the connecting sheet 6 with the front sheet 1 via the thick sheet 5, the thick adhesive layer 7 made of a hot-melt adhesive is formed on the inner surface of the back sheet 3.
Further, the thin adhesive layer 8 made of the hot-melt adhesive is continuously formed on the inner surface of the connecting sheet 6, and the front sheet 1 is adhered to the thin adhesive layer 8.

[0006]

In the present invention, since the thick adhesive layer 7 for bookbinding and the thin adhesive layer 8 for binding the front sheet are respectively formed continuously, the front cover with adhesive is provided with one adhesive feeder. Moreover, it can be manufactured by a cover manufacturing apparatus having one adhesive supplying step, and as a result, the unit price of the cover with adhesive can be reduced and the cover can be made cheap. Moreover, since the thick adhesive layer 7 and the thin adhesive layer 8 are continuously formed on the inner surface of the back sheet 3 and the inner surface of the connecting sheet 6, the thick adhesive layer 7 and the thin adhesive layer 8 are formed between the back sheet 3 and the connecting sheet 6. A thin adhesive layer 9 can be simultaneously formed on the inner side of the second fold portion 5, and the second fold portion 5 can be reinforced by the adhesive layer 9. Therefore, the front sheet 1 is spread on the back sheet 3 in a developed state. It is possible to effectively prevent the second fold portion 5 from being damaged even when it is repeatedly opened and closed or folded.

[0007]

Examples In the adhesive-attached cover sheets of the examples shown in FIGS. 1 to 5, a front sheet 1 is formed of a transparent material such as polyvinyl chloride resin / polypropylene resin, and a back sheet 2 and the back sheet are formed. The back sheet 3 connected to the sheet 2 is integrally formed of an opaque material such as paper or synthetic resin. The front sheet 1 is preferably made of a transparent material, but it may be made of other semi-transparent materials.

Further, the back sheet 2 and the back sheet 3 of the embodiment are continuously provided via the first fold portion 4 which is recessed toward the outer surface, and the back sheet of the back sheet 3 is not the back sheet. A connecting sheet 6 connected to the front sheet 1 is continuously provided at the side front portion via a second fold portion 5 that is recessed toward the outer surface.

A thick adhesive layer 7 made of a hot-melt adhesive such as a hot-melt type is formed on the inner surface of the back sheet 3, and a thin adhesive layer made of the hot-melt adhesive is formed on the inner surface of the connecting sheet 6. 8 are continuously formed from the inner surface of the back sheet to the inner surface of the connection sheet, and these back sheets 3
The second fold portion 5 is reinforced by the thin adhesive layer 9 formed inside the second fold portion 5 between the connecting sheet 6 and the connecting sheet 6, and the thin adhesive layer 8 has one end portion of the front sheet 1 formed thereon. The outer surface is glued. The thick adhesive layer 7 and the thin adhesive layer 8 are formed over substantially the entire length of the back sheet 3 and the connecting sheet 6. In the embodiment, the thick adhesive layer 7 is formed to have a thickness of about 0.7 mm to 1.0 mm,
When binding paper sheets such as catalogs, one side edge of the paper sheets is slightly buried in the melted thick adhesive layer 7 so that they can be bonded, and the thin adhesive layer 8 has a thickness of 0.1 mm. While being formed, the reinforcing adhesive layer 9 of the second fold portion 5 is formed to have substantially the same thickness as the thin adhesive layer 8.

In the embodiment, the connecting sheet 6 is
The thick adhesive layer is formed so as to be wider than the width of the back sheet 3 and is formed on the inner surface of the connection sheet 6 opposite to the back sheet and when the connection sheet 6 is bent from the second fold portion 5 to the back sheet 3 side. The thin adhesive layer 8 is formed at a position that does not face 7. With such a configuration, when the front sheet 1 is folded on the back sheet 2 as shown in FIG. 4, it is possible to prevent the front sheet 1 from contacting the thick adhesive layer 7, and therefore, as shown in FIG. It is possible to reduce the bulk when a large number of cover sheets are stacked and transported while the sheet 1 is folded on the back sheet 2.

Next, the operation of the embodiment configured as described above will be described.

Since the thick adhesive layer 7 is formed on the inner surface of the back sheet 3 of the cover sheet with the adhesive configured as described above, paper sheets such as catalogs and plan sheets are bound at the office or at home. In the case of binding paper sheets such as documents to be stored in, the front sheet 1 and the back sheet 2 are erected with respect to the back sheet 3 as shown in FIG. 3, and the thick adhesive layer 7 of the back sheet 3 has a predetermined thickness. One side of each of the paper sheets, such as a catalog prepared by arranging one side edge of the paper sheet, and heating the outer surface of the spine sheet 3 with an electric heater such as a hot plate to melt the thick adhesive layer 7. The edges can be embedded in the thick adhesive layer 7 to some extent so that they can be bonded, and the book can be bound by curing the thick adhesive layer 7.

Since the thick adhesive layer 7 and the thin adhesive layer 8 are continuously formed on the inner surface of the back sheet 3 and the inner surface of the connecting sheet 6, the back sheet 3 and the connecting sheet 6 are formed. Thin adhesive layer 9 inside the second fold portion 5 between
Since the second fold portion 5 can be reinforced by the adhesive layer 9, the front sheet 1 can be repeatedly opened and closed with respect to the back sheet 3 or folded. Even in the case of being broken, it is possible to effectively prevent the second fold portion 5 from being damaged.

Further, in the case of manufacturing a cover with an adhesive, the adhesive supply port for the thick adhesive layer and the adhesive supply port for the thin adhesive layer are connected to one adhesive supply device. The back sheet 2 in which the sheet 6 and the back sheet 3 are integrally connected through the first and second folds 4 and 5 is moved in the length direction of the back sheet 3 to supply the adhesive. To simultaneously supply the hot-melt adhesive to the inner surface of the back sheet 3 and the inner surface of the connection sheet 6 to form the thick adhesive layer 7 and the thin adhesive layer 8 at the same time. A dissociating agent layer such as liquid silicon is provided on the surface of the adhesive layer 7, or a release paper is attached, and the outer surface of one end of the front sheet 1 is bonded to the thin adhesive layer 8 on the inner surface of the connecting sheet 6. As described above, since the thick adhesive layer 7 for bookbinding and the thin adhesive layer 8 for joining the front sheets are continuously and simultaneously formed, the front cover with adhesive is provided with one adhesive supplier, and The cover can be manufactured by a cover manufacturing apparatus having only one adhesive supplying step, so that the unit price of the cover with adhesive can be reduced and the cover can be made cheap.

In the embodiment described above, as shown in FIG. 5, when the thick adhesive layer 7 and the thin adhesive layer 8 are formed, the back sheet 3 to the back sheet 2 end portion on the back sheet side. Thin adhesive layer 10 continuous with the thick adhesive layer 7
May be formed to reinforce the first fold portion 4.

[0016]

As described above, according to the present invention, the thick adhesive layer 7 for bookbinding and the thin adhesive layer 8 for joining the front sheets are formed in a continuous manner, respectively. It is possible to manufacture with a cover manufacturing apparatus that includes an adhesive supply device and has one adhesive supply step, and as a result, the unit price of the cover with adhesive can be reduced and the cover can be made cheap. Moreover, since the thick adhesive layer 7 and the thin adhesive layer 8 are formed continuously on the inner surface of the back sheet 3 and the inner surface of the connecting sheet 6, the space between the back sheet 3 and the connecting sheet 6 is increased. A thin adhesive layer 9 can be simultaneously formed on the inner side of the second fold portion 5, and the second fold portion 5 can be reinforced by the adhesive layer 9. Therefore, the front sheet 1 is spread on the back sheet 3 in a developed state. It is possible to effectively prevent the second fold portion 5 from being damaged even when it is repeatedly opened and closed or folded.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a cover sheet with an adhesive of the present invention is omitted.

FIG. 2 is an enlarged cross-sectional view of a front sheet opened in a developed state with respect to a back sheet.

FIG. 3 is an enlarged cross-sectional view showing a state in which a front sheet is folded and closed with respect to a back sheet.

FIG. 4 is an enlarged cross-sectional view of a front sheet folded on a back sheet.

5 is an enlarged sectional view corresponding to FIG. 2 showing another embodiment.

FIG. 6 is a partially omitted sectional view showing a conventional example.

[Explanation of reference numerals] 1 front sheet 2 back sheet 3 back sheet 4 first fold portion 5 second fold portion 6 connecting sheet 7 thick adhesive layer 8 thin adhesive layer

Claims (1)

[Claims] 1. A front sheet (1) made of a transparent material,
The back sheet (2) and the back sheet (3) made of an opaque material, wherein the back sheet (2) and the back sheet (3) are connected to each other through a first fold (4), and the back sheet is formed. While connecting the connecting sheet (6) with the front sheet (1) to the front part of (3) through the second fold (5), the inner surface of the back sheet (3) is coated with a heat-melting adhesive. And the thin adhesive layer (8) made of the hot-melt adhesive is continuously formed on the inner surface of the connecting sheet (6), and the thin adhesive layer (8) is formed. ) Is adhered to the front sheet (1), the front cover with an adhesive.