JPH11180068A - Book with pliable material applied on spine part, cover material used for book, and bookbinding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a book which can be easily opened windely and made at a low cost through bookbinding steps and further, a bookbinding method. SOLUTION: A pair of slits 14 are formed in the spine area of each of cover papers 11 of such a size as to be suitable for bookbinding using unbound edition lines, and a cover material 17 is formed by applying a pliable material 12 intended for forming a spine cover on the back face of each of the cover papers 11, to the outside of the paired slits 14. Further, the cover material 17 is supplied to the unbound edition lines to be applied to the spine part of a text 2A and at the same time, the text 2A is wrapped to be shaped into a book. After that, a position shown by a two dot chain line 15 is cut, then the peripheral parts are removed and at the same time, the part 11aa of each of the cover papers 11 located on the spine part of the book are removed. Thus it is possible to bind the book of such a construction that the spine cover formed of the pliable material 12 is applied to the spine part of the text 2A. This book with the spine cover formed of the pliable material 12 can be easily opened widely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a book that can be bound on a parallel binding line and that can easily open the main text, and a cover material used for binding the book and a method for binding the book. Related to

[0002]

2. Description of the Related Art Conventionally, parallel binding (also referred to as temporary binding) that can be manufactured at low cost has been used for magazines, telephone directories, manual books, and the like. Here, the parallel bookbinding means a text book running on a parallel bookbinding line (collated printing book. In some cases, the front and rear faces may be provided with a return, and the return is also referred to as a part of the text in this specification). Usually, a cover material formed of one sheet of paper (a size larger than the cover of the final book) is supplied while running synchronously, the body is wrapped with the cover material, and then the spine is removed. It is created in the bookbinding process of trimming three sides (top and bottom and fore edge), and as the binding method, perfect binding, azimuth binding, overcast temporary production, and the like are used. However, perfect binding, Ajiro binding,
Normal bookbinding, which is bound by temporary binding, etc., has a structure in which the spine of the text is attached to the spine of the cover (spine) with an adhesive, and the glued spine is hard. There was a drawback that it was difficult to make it in a greatly expanded state.

On the other hand, as a book structure capable of greatly opening a book, there is known a bookbinding method. In this bookbinding, the spine of the text is integrally adhered and fixed with a soft reinforcing cloth such as a thin cloth, and when wrapping the text with the cover, the reinforcing cloth on the spine of the text is not bonded to the spine of the cover. It is configured so that it can be freely bent away from the cover.

[0004]

However, the bookbinding is,
Due to the complexity of the structure, the production speed in the upper binding line is much slower than in the parallel binding line, and therefore, there is a problem that the cost is much higher than in the parallel binding line.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a book which can be easily opened widely even though bookbinding can be performed at low cost on a parallel bookbinding line. Aim. Another object of the present invention is to provide a cover material used for bookbinding and a bookbinding method.

[0006]

According to the book of the present invention, a front cover and a back cover are connected to both sides of a spine made of a flexible material in order to reduce the cost while ensuring the same ease of opening as the bookbinding. In this configuration, the back cover of the cover is attached to the back of the main body. Books with this structure
Since the spine is simply a single-layer structure of a flexible material, the structure is simple and has an advantage that it can be easily opened widely.

By the way, the cover used in the book of the present invention, that is, the cover in which the front cover and the back cover are connected to both sides of the spine made of a flexible material, is not simply a cover. Since there is a flexible material between the back covers, the shape is not stable, and it is difficult to handle in a parallel bookbinding line. Therefore, the present invention also provides a cover material that can be handled in a parallel bookbinding line and that can be used as a cover having the above configuration by cutting and removing unnecessary portions in a cutting process in the parallel bookbinding line.

[0008] That is, the cover material of the present invention is a large-sized cover paper suitable for use in bookbinding on a parallel bookbinding line, at least on both side edges of the spine region corresponding to the spine of the text. A slit is formed so as to be located along the cover, and a flexible material for forming the spine is attached to the spine region of the cover sheet. In the cover material of this configuration, the front cover and the back cover formed on the cover paper are connected at both ends (at both ends of the slit) of the spine region of the cover paper. Compared to the case of connecting, it has a strength that can be handled on the parallel binding line, so it can wrap the text without trouble in the parallel binding line, and when makeup is cut off in the subsequent process, Since the connected portions at both ends of the spine region of the cover sheet are cut off and removed, only the soft material remains as the spine, and a book using the soft material on the spine can be bound.

The bookbinding method of the present invention is to supply the cover material having the above-described configuration to a parallel bookbinding line and to perform bookbinding, whereby the book of the present invention can be bound.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A book according to the present invention comprises a cover having a structure in which a front cover and a back cover are connected to both sides of a spine made of a flexible material,
With the body wrapped in the cover, the spine is glued to the back of the body, and the edge positions of the front cover, the back cover on the top side, the ground side, and the fore edge side are the same as the edge positions of the body. Things. Books with this structure can be easily opened widely because the back of the body is composed of a flexible spine.
In addition, since bookbinding can be performed on a regular bookbinding line, bookbinding can be performed at low cost.

Here, in the present invention, the flexible material used for forming the spine is arbitrary, as long as it is soft and has the necessary strength, such as cloth. Is used. For the front cover and the back cover arranged on the front and rear sides of the text, a soft cover used for parallel binding is used. The front and back covers to be placed on the front and back of the body should be the same as the front and back of the body (if the body has a facing, look back; if not, the outermost leaf of the body) It may or may not be attached, but it is preferable to attach it to at least one of the throat and the fore edge in order to improve the appearance.

In the book of the present invention, the length of the portion of the spine located between the edges of the front cover and the back cover is made larger than the thickness of the main body, and the corner of the spine of the main body is set to the spine. It is preferable to adopt a configuration that covers only with the cover. With this configuration,
In the bookbinding process, when the spine is attached to the spine of the main body, even if the position of the spine is slightly shifted, the back edge of the front cover or the back cover is set backward from the spine of the created book. It is avoided that it protrudes or goes around the back and deteriorates the appearance.

The cover material according to the first embodiment of the present invention is a cover sheet having a size larger than that of a book to be finally manufactured. A cover sheet formed with a pair of slits longer than the top and bottom size of a book to be finally located so as to be positioned along both side edges of the spine, and the cover sheet has the pair of slits and a gap between the pair of slits. And a flexible material attached so as to cover the region and outside the pair of slits.

The bookbinding method of the present invention using the cover material is as follows:
The cover material is supplied to the parallel binding line so that the flexible material attached to the cover paper is on the inside, and in the parallel binding line, the body is wrapped with the cover material, and the back of the body is attached to the cover paper. The body is attached to the flexible material, and then the body and the cover material around it, except for the spine, are cut to a predetermined size, and the portion remaining between the pair of slits on the cover paper is cut off from the cover paper. It is possible to remove the portion left between the pair of slits in the spine region of the cover paper from the cover paper,
A book using a soft material on the back can be manufactured.

The cover material according to the second embodiment of the present invention is a cover paper having a size larger than that of a book to be finally manufactured. A cover sheet having a slit at a position corresponding to the spine of the main body, the slit having a width equal to or larger than the width of the spine of the main body and longer than the top and bottom size of the finally manufactured book, and the cover sheet is covered with the slit. And a flexible material attached on both sides of the slit. The cover material having this configuration is also supplied to the parallel bookbinding line, similarly to the cover material described above,
In the normal binding line, wrap the body with the cover material, glue the back of the body to the flexible material pasted on the cover paper, and then remove the body and the three sides except the back of the wrapped cover material. The method includes a step of cutting the book into a predetermined size, whereby a book using a soft material on the back can be manufactured. In the case of this bookbinding method, the cover material supplied to the parallel bookbinding line may be in a state where the flexible material is located inside or outside the cover sheet.

In bookbinding on the above-mentioned parallel bookbinding line,
Before wrapping the body with the cover material, an adhesive can be applied to at least one of the throat and the fore-edge of the front cover and the back cover of the cover material, whereby the throat of each of the front cover and the back cover can be provided. And at least one of the forehead and the forehead can be attached to the front and rear sheets of the body facing it.

[0017]

Embodiments of the present invention shown in the drawings will be described below. FIG. 1 is a schematic perspective view showing a book 1 according to a first embodiment of the present invention in a closed state, and FIG. 2 is a schematic sectional view showing the book 1 in an open state. This book 1 has 2
The book is a parallel binding (temporary binding) composed of a text 2 provided with a and a cover 10 wrapping the text 2, and the cover 10 is
Unlike the cover used for ordinary bookbinding, a back cover 3 made of a flexible material attached to the back of the main body 2, and cover covers 4 connected to both sides thereof and arranged on the front and rear surfaces of the main body 2, It consists of the back cover 4. The soft material used for the spine 3 is a soft material such as a cloth, and usually, a material that can be printed or pressed with a foil is used. The spine 3 has a width wider than the thickness of the spine of the main body 2, and a portion corresponding to the spine of the main body 2 is attached to the spine of the main body 2 by an adhesive 7, and the side edge portions 3a, 3a on both sides. Are attached to the front and rear surfaces of the main body 2 with an adhesive 7A. Also, the side edge portions 3a, 3a
Are respectively covered with an adhesive 5
Has been pasted. Further, the front cover 4 and the back cover 4 and the facing face 2a facing each other are also adhered to each other by the throat 8 and the edge glue 9.

The book 1 is a bookbinding book bound by a bookbinding line as will be described later. Since the book 1 is cut in three directions in the bookbinding line, the booklet 1 is printed on the top side, the ground side, and the fore side of the front cover and the back cover 4. The position of the edge is the same as that of the text 2. On the other hand, the position of the edge 4 a on the back side of the front cover 4 and the back cover 4 is slightly inside the back of the main body 2. In other words, the edges 4a of the back cover 3 of the front cover 4 and the back cover 4,
The length of the portion located between 4a is larger than the thickness of the main body 2, and the back corner of the main body 2 is covered only by the spine 3. In this way, when the cover 10 is attached to the body 2, even if the position of the spine 3 is slightly shifted,
Alternatively, the edge 4a of the back cover 4 does not protrude outward beyond the spine surface of the book 1 or wraps around the spine, thereby providing an advantage that the appearance of the book can be prevented from being deteriorated.

In the book 1 having the above structure, since the spine 3 is made of a flexible material, as shown in FIG. 2, the spine 3 can be curved, and the main body 2 can be easily opened widely. . Further, since the front cover 4 and the back cover 4 have the throat portion and the fore edge adhered to the facing 2a by the nodule 8 and the fore edge 9, the back surfaces of the front cover 4 and the back cover 4 are not exposed. In addition, when the front cover 4 or the back cover 4 is opened, an appearance like top binding is provided, and the appearance is good. In addition, when it is permissible to make the appearance of the book slightly worse, one or both of the throat 8 and the fore edge glue 9 can be omitted. Further, the facing 2a can be omitted.

Next, the bookbinding method of the book 1 shown in FIGS. 1 and 2 and the cover material used for the bookbinding will be described. First, FIG.
A cover sheet 11 and a flexible material 12 such as a cloth shown in FIG. The cover sheet 11 is of a size suitable for use in bookbinding on a regular bookbinding line (the top and bottom size H is larger than the top and bottom size of book 1), and the center corresponds to the book spine. It has a back region 11a and, on both sides thereof, portions 11b, 11b serving as a front cover 4 and a back cover 4 of the book.
(A region surrounded by a slit 14 and a two-dot chain line 15 described later), and necessary printing is performed on the portions 11b and 11b. Also, the back area 11a of the cover paper 11
A pair of slits 14 slightly longer than the top and bottom size of the book to be finally manufactured but shorter than the top and bottom size of the cover sheet 11 are provided at positions along both side edges of the back of the body wrapped by the cover sheet 11. , 14 and the connecting portions 11c are left at both ends thereof. A portion 11b of the cover sheet 11,
Edge 11d facing a pair of slits 14 of 11b
Is a portion to be the edge 4a (see FIG. 1) of the front cover and the back cover. The distance D between the edges 11d, 11d and the width of the slits 14, 14 will be described later.

In FIG. 3, a two-dot chain line 15 near the periphery of the cover paper 11 indicates a cutting position at the time of three-way cutting in the parallel bookbinding line, and both ends of the pair of slits 14 are indicated by a two-dot chain line 15. It is formed so as to cross the cutting position shown. The flexible material 12 forms the spine 3 provided in the book 1 shown in FIG. 1, and the surface thereof is subjected to necessary processing such as printing and foil stamping. The width W of the flexible member 12 is set to be larger than the distance D between the outer edges 11d of the pair of slits 14, 14.

Next, the adhesive 5 is applied to the back surface of the cover sheet 11 and outside the pair of slits 14, 14, and the flexible material 12 is attached. Thereby, the cover material 17 having the form shown in FIG. 3B is formed. Here, the distance D between the outer edges 11d, 11d of the pair of slits 14, 14 is set to be larger than the thickness t of the main body 2 (see FIGS. 5 and 6). As shown in FIG.
When the main body 2 is wrapped with the cover material 17, the edge 11d is located at a position slightly retracted from the back of the main body 2, and the cover paper 11
Even if there is some error in the attachment position to the text 2, it is possible to prevent the edge 11d from protruding outward from the spine surface of the book or turning over the spine. The amount e [= (Dt) / 2] of the edge 11d withdrawn from the back of the main body 2 is preferably about 1 to 10 mm. In addition,
When the positional accuracy when wrapping the text with the cover material 17 is high, or when there is no problem even if the edge 11d slightly goes around the spine of the book, the edge 11d is retracted from the spine of the text 2. It is not necessary to set the distance D to the thickness t of the text 2.
May be equal to

On the other hand, in FIG.
Is a part 11aa sandwiched between the slits 14, 14, and a part 11b, 11b outside the pair of slits 14, 14.
It is provided to separate from the slits, and its width may be 0 (just a cut is made), but when the adhesive 5 is applied to the outside of the pair of slits 14, 14, the adhesive is used. Has a suitable width so as not to adhere to the portion 11aa sandwiched between the pair of slits 14, 14. On the other hand, if the width of the slit 14 is too large, the strength of the spine region 11a of the cover paper 11 and the strength of the connecting portion 11c become small. Considering these, the width of the slit 14 is
It is preferable to set it to about 2 to 15 mm. In addition, when selecting the width of the slit 14, even if a slight positional error occurs when wrapping the main body 2 with the cover material 17, the portion 11aa sandwiched between the pair of slits 14 and 14 is shown in FIG. As shown in the figure, it should be located slightly inside from both corners of the back of the main body 2, or as shown in FIG. 6 (b), should be able to completely cover both corners of the back of the main body 2. Is preferred. With this setting, when pressing the spine of the book and the front and rear surfaces adjacent to the spine in the pressing process in the parallel bookbinding line, the corner 11aa is caught halfway by the corner and obstructs the press. This has the advantage that the corners can be neatly shaped.

Next, a cover material 17 of the form shown in FIG.
Is supplied to a conventional bookbinding line of the perfect binding method or the azimuth binding method, and bookbinding is performed in the same manner as in the related art. That is, in the case of the perfect binding method, the text 2A (see FIG. 4) created by collating a plurality of signatures in the collating process in the parallel bookbinding line is milled (cut) and roughened (roughened). After passing through each of the steps (1) and (2), a wrap-around step is performed with the cover material 17. In this case process, as shown in FIG.
Is supplied inside (on the side facing the text 2A), and the spine 8 and the edge glue 9 are applied to the running cover material 17, while the running text 2A is attached to the spine. The adhesive 7 such as hot melt is applied and the adhesive 7A is also applied to the front and back throats. Then, while the cover 17 and the body 2A are running in synchronization, the flexible material 1 on the back of the cover 17 is applied.
2 against the back of the main body 2A, and then FIG.
(B) and cover sheet 11 as shown in FIG.
Of the front cover and the back cover are folded and superimposed on the side surface of the main body 2A. Thereafter, the main body 2A in the form shown in FIGS. 5 (b) and 6 (a) and the cover material 17 wrapped around the main body 2A are sent to a pressing step, and the spine portion of the book and the portion adjacent to the spine of the front and rear surfaces are pressed. To secure the joint and shape the spine. Thereafter, in the cutting process, the three sides excluding the spine of the book are cut at the positions indicated by the two-dot chain line 15 to remove the peripheral portion. Also, a pair of slits 14 of the cover paper 11,
Since the portion 11aa sandwiched by 14 is to be cut off from the cover sheet 11, this is also removed. According to the above steps, the book 1 having the configuration shown in FIGS. 1 and 2, that is, the book 1 having the spine 3 made of a flexible material attached to the back of the main body 2.
Is manufactured.

In the case of the azimuth binding method, signatures having been subjected to azimuth processing are supplied to a parallel bookbinding line, and the signatures are collated to produce a main body 2A, and the steps of case binding, pressing, and cutting are sequentially performed. . Thereby, book 1 can be manufactured. In addition, at the time of bookbinding in the parallel bookbinding line, as the adhesive 7 used for the back of the main body 2A, a rubber-based adhesive such as a softener type EVA-based adhesive is used.
Various hot melts such as PUR or various emulsions can be used.

As described above, by preparing the cover material 17 and supplying it to the parallel bookbinding line, the book having the configuration shown in FIGS. 1 and 2 can be bound by the parallel bookbinding line.
Can be bound at low cost. In the above-described embodiment, the description has been given of the case where the signatures are collated on the parallel binding line to create the text 2A. However, the creation of the text 2A is not necessarily performed on the parallel binding line, but may be performed on a different binding. Collated by equipment,
If necessary, it may be changed to supply to the parallel bookbinding line after performing the overhang. Further, in the above-described embodiment, the cover 4 and the facing 2a are stuck together with the nodule 8 and the small nodule 9, but these may be omitted if not necessary.

Further, in the above embodiment, the cover paper 11 is formed by forming a pair of slits 14, 14 in the back region 11a, but instead of this, as shown in FIG. Cover sheet 1 having a slit 14A at a position corresponding to the spine of the subject, having a width D 'equal to or greater than the width of the spine of the main body and slightly longer than the top and bottom size of the finally manufactured book.
It is also possible to use 1A. Here, the slit 14
The width D 'of A is also set in the same manner as the distance D between the outer edges of the pair of slits 14 of the cover paper 11 shown in FIG. Also in the case of the cover sheet 11A shown in FIG.
A cover material 17A having the configuration shown in FIG. 7B is prepared by attaching a flexible material 12 such as a cloth to the back surface of the cover 1A, and is supplied to the parallel bookbinding line. Similarly to the case described above, after wrapping the main body 2A with the cover material 17A, the book shown in FIG. 1 can be manufactured through a cutting process. In this case, in the cutting step after the body 2A is wrapped with the cover material 17A, the position indicated by the two-dot chain line 15 of the cover paper 11A is cut, and the portions 11b to be the front cover and the back cover on both sides are cut. 11b is cut off, but at this time, only a large slit 14A is provided at the back of the book, and as in the embodiment shown in FIG. 11aa part of the cover paper
Is not present, so that there is no need to remove the spine of the cover sheet. Also,
In the cover material 17A, since the back of the flexible material 12 is exposed by the slit 14A, foil stamping and printing can be performed in this state. Material 12 as cover paper 11A
Not only before pasting, but also after pasting.

Further, in the cover material 17A having the structure shown in FIG. 7, it is not necessary to remove the spine portion of the cover paper 11A after wrapping and cutting the body, so that the flexible material 12 pasted on the cover paper 11A can be used. It can be bound outside.
FIG. 8 shows an embodiment in that case, and shows a case binding process in a parallel bookbinding line. In FIG. 8A, a cover material 17B has a configuration in which a flexible material 12 is attached to the front side (outer side) of a cover sheet 11A having a large slit 14A in the center. On the backing material 17B running in the parallel bookbinding line, the back 8 (the surface opposite to the surface on which the flexible material 12 is pasted) is coated with the glue 8 and the edge glue 9 while the running material is running. In the main body 2A, an adhesive 7, 7A such as hot melt is applied to the back portion, and then the cover material 17B is applied.
While running the body 2A in synchronization with the body, the back of the body 2A is pressed against the center of the cover 17B, and the back of the body 2A is adhered to the flexible member 12 outside through the slit 14A.
Next, the front cover and the back cover on both sides of the cover paper 11A are bent so as to overlap the front and rear surfaces of the main body 2A, and FIG.
The book is in the state shown in FIG. Then, in the pressing process,
The back portion of the book and the front and rear portions adjacent to the back portion are pressed to secure the bonding with the adhesives 7 and 7A and to shape the back portion of the book. Thereafter, in the cutting process, the three sides excluding the spine of the book are cut at the position indicated by the two-dot chain line 15. According to the above steps, the spine 3 made of the flexible material of the cover 10A is attached to the spine of the form shown in FIGS. The book 1A on which the cover 4 is arranged is manufactured. However, this book 1A is different from book 1 shown in FIGS.
A side edge portion 3a of the back cover 3 is attached to the outside of the back cover 4.

The book 1A of this configuration can also be opened greatly as shown in FIG. 10 since the spine 3 is made of only a soft material, and the back cover 2a is provided on the back of the front cover 4 and the back cover 4. Since it is stuck on the edge 8 and the edge glue 9, it has the advantage of good appearance. Further, since bookbinding can be performed on a parallel bookbinding line, bookbinding can be performed at high speed, and bookbinding can be performed at low cost.

[0030]

As explained above, the book of the present invention is
Since the spine is made of a flexible material attached to the spine of the main body, the main body can be easily opened widely, and the book can be bound on the parallel binding line. And the like.

Further, the cover material of the present invention can be supplied to and handled in a parallel bookbinding line, and the book of the present invention described above can be bound, and the bookbinding method of the present invention uses the cover material to perform parallel bookbinding. Since the book is bound on a line, there is an effect that a book having a configuration in which a spine made of a flexible material is attached to the back of the text can be bound at high speed and at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a book according to one embodiment of the present invention.

FIG. 2 is a schematic sectional view showing the book of FIG. 1 in an opened state;

3A is a schematic perspective view showing an example of a cover sheet and a flexible material used for manufacturing the book shown in FIG. 1, and FIG. 3B is a book formed by attaching a flexible material to the cover sheet. 1 is a schematic perspective view of a cover material according to an embodiment of the present invention.

FIG. 4 is a schematic perspective view showing a state before a body 2A is wrapped with a cover material 17 in a case binding process of a parallel bookbinding line in one embodiment of the present invention.

5A is a schematic perspective view showing a state in which the body 2A is being wrapped with a cover material 17, and FIG. 5B is a schematic perspective view showing a state in which the body 2A has been wrapped.

6A is a schematic cross-sectional view of a spine portion of the book shown in FIG. 5B, and FIG. 6B is a schematic cross-sectional view showing a modification of the portion shown in FIG.

FIG. 7A is a schematic perspective view showing an example of a cover sheet and a flexible material used in another embodiment of the present invention, and FIG. 7B is another example of the cover sheet formed by attaching a flexible material to the cover sheet. Schematic perspective view of a cover material according to an embodiment

8A illustrates a case 2B in which a body 2A is covered by a cover 17B in a case where the cover shown in FIG. 7B is used.
FIG. 3B is a schematic perspective view showing a state before wrapping, and FIG.

FIG. 9 is a schematic perspective view of a book bound by the embodiment shown in FIG. 8;

FIG. 10 is a schematic sectional view showing the book shown in FIG. 9 in an opened state;

[Explanation of symbols]

 1, 1A book 2, 2A body 2a facing 3 back cover (flexible material) 4 front cover, back cover 5, 7, 7A glue 8 glue 9 small glue 10, 10A cover 11, 11A cover paper 11a spine area 11b Part to be the front cover or back cover 12 Flexible material 14, 14A Slit 15 Line indicating cutting position 17, 17A, 17B Cover material

Claims (8)

[Claims] 1. A back cover made of a flexible material, comprising a front cover and a back cover connected to both sides of the back cover, and a body wrapped around the front cover, wherein the back cover is adhered to the back of the body. , A book using a flexible material on the back, in which the edge positions of the front cover and the back cover on the top side, the ground side, and the fore edge side are the same as the edge positions of the main body. 2. The flexible spine according to claim 1, wherein the front cover and the back cover and the sheet of the body facing each other are attached to at least one of a throat and a fore edge. Books using wood. 3. The length of a portion of the spine located between the edges of the front cover and the back cover is greater than the thickness of the text, and the back corner of the text is covered only with the spine. 3. The book according to claim 1, wherein the back is made of a flexible material. 4. A cover sheet which is larger in size than the book cover to be finally manufactured, and which is positioned along the both sides of the spine of the body when the cover sheet is wrapped with the body. And a cover sheet formed with a pair of slits longer than the top and bottom size of the book to be finally manufactured, and the cover sheet covers the pair of slits and an area therebetween, and the outside of the pair of slits. Cover material having a flexible material affixed in the above. 5. A cover paper having a size larger than the cover of a book to be finally manufactured, and the width of the back of the body is set at a position corresponding to the back of the body when the cover is wrapped with the body. A cover paper having a slit having a width longer than the top and bottom size of the book to be finally manufactured, and a flexible material attached to the cover paper so as to cover the slit and attached to both sides of the slit; Cover material having 6. The cover material according to claim 4 is supplied to a parallel bookbinding line such that the flexible material attached to the cover paper is on the inside, and in the parallel bookbinding line, the body is covered with the cover material. Then, the back of the body is attached to the flexible material attached to the cover sheet, and then the body and the three sides except for the back of the cover material surrounding the body are cut to a predetermined size, and the space between the pair of slits of the cover sheet is cut. A method for binding a book using a soft material on the back, characterized in that the remaining portion is separated from the cover sheet. 7. A flexible sheet-supply material according to claim 5, which is supplied to a side-by-side bookbinding line, in which the body is wrapped with the cover material, and the back of the body is attached to the coversheet. A method of binding a book using a flexible material on the back, characterized by laminating the body and a cover material surrounding the body on the three sides except for the back, and thereafter cutting the book to a predetermined size. 8. The bookbinding method according to claim 6, wherein the bookbinding process is performed by binding the front cover and the back cover of the cover material to the body sheet facing each other at the time of bookbinding on the parallel bookbinding line.
A bookbinding method characterized by laminating at least one of a throat and a fore edge.