JPS61230993A - Hard cover - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hard cover suitable for use, for example, in case binding, albums, filing tools for binding and holding documents and cards, and the like.

[Conventional technology]

The hard cover is made of wood with a flat spine part 11, which is called a square spine book 1 as shown in Figure 8, or is made of wood with a flat spine part 11, which is called a round spine book 2 as shown in Figure 9. It is used for relatively high-quality books such as books in which the portion 21 is arc-shaped.

The former corner spine book 1 has a front cover of 4. Spine cover 11 and back cover 5
Contains a pole paper core material. In the latter round spine book 2, only the front cover 4 and the back cover 5 have a pole paper core material, and the spine 21 has a thin core material. Also, corner spine book 1. The round-spine books 2 include tight-back books (in which the inside of the spine 11 or 21 and the bound folded material 6, which is the contents of the book, are glued) and hollow-back books (the inside of the spine 11 or 21). There is a tree with 6 and folded items 6 floating on it.

These various types of hardcover books have conventionally been manufactured by manual labor by skilled workers. Although some labor-saving technologies have been introduced, all of them involve partially mechanizing each process of manual work or connecting each process with a conveyor, and no improvements have been made to the quality of wood. Not yet.

That is, conventional hard cover wood is manufactured as follows. To manufacture the cover of the square spine book 1, as shown in FIG. The core material 9 is positioned and arranged. These core materials 8, 10,
Fold the facing material 7 in the direction of the arrow so as to wrap around the core material 9 to the chain line position, and adhere the core material 8/10-9 and the facing material 7 with great care so that no air bubbles enter between them. Then the first
Front cover 4, back cover 11 and back cover 5 as shown in Figure 1
A hard cover is obtained in which these are integrated. When cheesecloth (not shown), which is pasted and extended on the spine of the bound folded material 6 that is the contents of the book, is adhered to the front cover core material 8 and back cover core material 9 of this hard cover, the cover and The folded item 6 is connected. .

Then, a endpaper 30 (see M81N) attached in advance to the frontmost fold of the folded article 6 is adhered to the inner surface of the front cover 4, and a endpaper 31 is similarly adhered to the rear cover 5. Then, the core material 8 and cheesecloth exposed on the inside of the front cover 4 and the core material 9 and cheesecloth exposed on the inside of the back cover 5 are covered by the endpapers 30 and 31, respectively, and become beautiful.
A square backwood l is manufactured. Note that the procedure for connecting and adhering the cover and the folded material 6 is well known, so a detailed explanation will be omitted.

In order to manufacture the round spine book 2 shown in FIG.
(See Figure 10) Insert a relatively thin paper core material,
Only the front cover core material 8 and the back cover core material 9 are manufactured in the same manner as in the case of the square spine book, by obtaining a hard cover containing cardboard. Then, due to the appropriate flexibility between the facing material 7 and the thin paper core material, the spine 21 becomes arcuate.

[Problem that the invention seeks to solve]

As mentioned above, books with hard covers, whether square-backed or round-backed, require a large number of man-hours to manufacture, and there are many processes that require skill, which limits rationalization. Therefore, it was said that it would be difficult to reduce manufacturing costs.

Although the present invention has the same external appearance as a conventional hard cover, the internal structure is completely different from that of a conventional hard cover, thereby reducing the number of man-hours required for manufacturing a book and simplifying the manufacturing process. The purpose of this invention is to provide a hard cover that can be used in a variety of ways, and that also saves on the materials used.

[Means for solving problems]

Means for solving the above problems will be described with reference numerals in each figure corresponding to the embodiments.

The first invention of the present application is a hard cover suitable for use in a square spine book 1 (see Fig. 1), that is, a front cover core material 8, a spine core material 10, and a back cover which are separate bodies. A core material 9 is covered with a facing material 13 and connected, so that a front cover 14, a spine cover 16, and a rear cover 15 are integrated. At least a portion of the inner surface 14a of the front cover 14, the inner surface 16a of the spine 16, and the inner surface 15a of the rear cover 15 of the covering material 13 are made of a shrinkable material.

Further, the second invention of the present application is a hard cover suitable for use in a round spine book 2 (see FIG. 7). That is, the core material 8 of the front cover and the core material 9 of the rear cover, which are separate bodies, are covered by the facing material 13 and connected, so that the front cover 14 and the back cover 15 are integrated. The covering material 13 is made of a shrinkable material on at least a portion of the inner surface 14a of the front cover 14 and the inner surface 15a of the rear cover 15.

[Effect]

In the hard cover of the present invention, since the facing material 13 is made of a shrinkable material, the core material 8, 9, lO of the hard cover and the facing material 13 can be bonded together without the need for a bonding work using an adhesive that requires skill. are in close contact with each other, and the core materials 8, 9, and 1O are each supported by the facing material 13 and positioned at a predetermined position. Books using this hard cover also eliminate the need for endpapers 30@31.

〔Example〕

The hard cover for backwaters shown in FIG. 1 is manufactured as follows. First, as shown in Figure 2.

For example, the front cover core material 8, the back cover core material 10, and the back cover core material 9 are positioned and arranged on a heat-shrinkable facing material 13 made of biaxially stretched polyethylene film, and folded in the direction of the arrow. The cross section at this time is shown in FIG. 3(a), and the tip portion 13 of the facing material 13 is
a and 13b, a midway portion 13C (near the chain line in FIG. 2), and side end portions 13d and 13e are heated and welded using ultrasonic waves.

In this state, the core materials 8, 10, 9 and the facing material 13 are loose.
9 and the mounting material 13 are irradiated and heated with infrared lamps 33 and 34, and the heat-shrinkable mounting material 13 contracts.
The core materials 8, 10, 9 and the facing material 13 are in close contact with each other. As shown in FIG. 1, in the hard cover that has been created, the welded parts of the covering material 13, such as the tip portions 13a and 13b, the middle portion 13c, and the side edges 13d and 13e, are all located on the inside surface 14a-14b side. become. Note that the folded material 6 is wrapped around this hard cover, and the square spine book 1 shown in FIG. 8 is completed.

FIG. 4 is another embodiment showing the manufacturing procedure of a hard cover to which the present invention is applied. In this example, the cover material is made of different materials on the outer and inner surfaces of the cover. As shown in FIG. 3A, a core material 8.lO.9 is sandwiched between a biaxially stretched heat-shrinkable polyethylene film 131 and an unstretched polyethylene film 132. Then, as shown in (b), when the film 13+ side is heated after welding between the film 13+ and the film j32, the heat-shrinkable film 131 contracts as shown in the arrow direction in (c), and becomes an unstretched film. 132 is also pulled, and the film 13
+ and the film 132 are in close contact with the core materials 8 and 10-9. As shown by the arrow in FIG.
A tensile force is applied to the central portion of 1, and the parts are brought into close contact uniformly.

The surface on the heat-shrinkable film 131 side where the film seam is located is used as the inside surface of the cover.

FIG. 6 also shows another embodiment, with core material 81110/9
This is an example in which a hard cover is manufactured by putting the paper into a tube of heat-shrinkable polyethylene film 13 and heating and shrinking the film.

In order to manufacture the hard cover for round backwood shown in FIG. 7, only the front cover core material 8 and the back cover core material 9 are used without adding the spine core material 10, similar to the hard cover for round backwood. Manufactured using the following procedure.

In each of the above embodiments, the covering material 13 is not limited to polyethylene film, but may be a heat-shrinkable film such as polypropylene film, vinyl chloride film, or polystyrene film. In addition to films, heat-shrinkable materials such as cloth and nonwoven fabric may also be used. Furthermore, any shrinkable material can be used, including elastically shrinkable materials such as rubber membranes and rubber-filled cloth.

When the outer surface and the inner surface of the cover are made of different materials (see FIG. 4), the two materials do not necessarily have to be of a similar type, but may be of different types. For example, the outer surface may be made of woven fabric and the inner surface may be made of film. In that case, the adhesion is achieved by shrinkage of the inner surface film, but it is more preferable if the outer surface material has some extensibility.

Welding of the facing material 13 is carried out by appropriately selecting from heat welding using ultrasonic waves, heat welding using metal ribbons, heat welding using high frequency dielectric, etc., depending on the material. A welding material may be separately provided and welded. The welding is not limited to welding, and adhesion with an adhesive may be used, or when the covering material 13 is cloth or the like, sewing may be used.

In addition to pole paper, chipboard, hard plastic, etc. can be used as the core material for the cover.

In addition, the infrared lamp 33 is used to heat shrink the surface material 13.
．． In addition to the heating by 34, heating by a heat roller, heating by hot air flow, etc. can be performed.

〔Effect of the invention〕

As explained above, in the hard cover of the present invention, the facing material is a shrinkable material, and each core material of the hard cover and the facing material are in close contact with each other, so a bonding work using an adhesive that requires skill is required. Moreover, since there is no adhesive part between the core material and the cover material, books using the hard cover of the present invention do not require endpapers or the trouble of attaching them. Therefore, not only can the hard cover itself be manufactured at low cost, but also the process of wrapping the folded material of the book can be streamlined.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a hard cover to which the present invention is applied. Figure 2 is a perspective view explaining the manufacturing process, Figure 3 is a cross-sectional view, Figure 4 is a cross-sectional view explaining the manufacturing process of another embodiment, and Figure 5 is a hard cover of another embodiment. Perspective view, 886
The figure is a perspective view illustrating the manufacturing process of another embodiment, FIG. 7 is a perspective view of a hard cover of another embodiment, FIG. 8 is a perspective view of a backwater, and FIG. 9 is a bottom view of a round backwater. FIG. 10 is a perspective view illustrating the manufacturing process of a conventional hard cover, and FIG. 11 is a perspective view of a conventional hard cover. l...Mukai back water, 2...Maru back water, 4Φ1
4. ,,,front cover, 5/15. ,,, back cover, 6
,,,, folded T-thing, 8 fists, 9 fists, 10. ,,, Core material, 11-16・21 ,,,, Back cover, 13@13
1 1113z - Surface material.

Claims (1)

[Scope of Claims] 1. The core material of the front cover, the core material of the spine cover, and the core material of the rear cover, which are separate bodies, are covered by a facing material and connected to form an integrated front cover, spine cover, and rear cover. 1. A hard cover comprising a cover material comprising a shrinkable material on at least a portion of the inner surface of the front cover, the spine and the rear cover. 2. The core material of the front cover and the core material of the back cover, which are separate bodies, are covered by a facing material and connected to form an integrated front cover and back cover, and the facing material covers at least the front cover and the back cover. A hard cover characterized by a part of the inside surface of the back cover being a shrinkable material.