JP2016002717A - Bookbinding method for wireless bound booklet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bookbinding method for a wireless bound booklet that enables a wireless bound booklet equipped with an excellent spread property to be book-bound by a simple method.SOLUTION: A bookbinding method for a bound booklet of this invention is characterized by setting the width of each of two streaks curved in the back face center region of a front paper material to a range of 0.3-0.8 mm, coating the rear face of a paper material laminate and the interior of one streak of the front paper material with a first adhesive, coating a narrower area than a coated area of the adhesive layer with a second adhesive by overlapping on the first back adhesive layer, pressing the back part of the front paper material from outside while being heated by using a heating tool in a condition that the back face of the paper material laminate and the front and rear faces are wrapped with the front paper material to make the second adhesive diffuse over the whole face of the first adhesive layer excluding the one streak and its vicinity, and fill the interior of the other of the streaks to harden and cure the second adhesive.

Description

  The present invention relates to a bookbinding method of a perfect binding booklet having excellent spreadability.

In notebooks and other booklets, a paper binding method is used in which a predetermined number of paper materials are aligned and stacked to form a paper material laminate, and an adhesive is applied to the back of the paper material and a cover material is applied. ing. This binding method is said to open the booklet to the throat for the time being because only the back surface of the paper laminate is fixed with adhesive as described above, and it is less expensive than saddle stitching. It is known that there is an advantage that the degree of freedom of the number of paper materials constituting the paper material laminate is high.

JP 2004-188863-A

However, in this bookbinding method, since the end on the back side of each paper material is fixed substantially perpendicular to the adhesive layer after application, depending on the flexibility of the adhesive after curing, any page of the booklet In general, each paper material, one end of which is fixed to the adhesive, is raised in the vicinity of the back part, and the right and left paper materials are not opened at about 180 degrees across the back part, There was a problem that the spread was not good.

  In the case of booklet binding, hot-melt adhesive is often used as the adhesive. There is a problem that the cover sheet material and the first sheet material in contact with the cover sheet adhere to each other at the throat, and the first sheet material cannot be satisfactorily opened.

The present invention has been made to solve these problems and problems, and an object of the present invention is to provide a bookbinding method of a perfect binding booklet capable of binding a simple binding booklet with excellent spreadability by a simple method. .

According to one aspect of the present invention, the object is the step of engraving two stripes in the center of the back surface of the cover material in parallel with the interval substantially matching the thickness of the paper material laminate; A step in which one of the streaks is folded and folded in approximately two on the opposite side, the one streaks being aligned with the back surface of the paper material laminate, and the cover material is stacked and disposed; The process of applying the first adhesive continuously from the back surface to the inside of one streak of the cover material, and then drying the first adhesive from the side where the cover material of the paper material laminate is stacked. The second adhesive is applied over the entire length of the stripe in the width direction of 40 to 70% of the thickness of the laminate, and the cover material folded in half is now covered by the second adhesive. Each of the streaks is folded inside and folded back so that each of the streaks is inside, and the paper material is formed. A step of wrapping the back portion and the front and back surfaces of the layer body, to which the second adhesive layer is applied, and pressing the back portion of the cover material from the outside while heating the back portion using a heating tool; A step of continuously diffusing from the entire surface of the first adhesive layer except the streaks and the vicinity thereof into the other of the two streaks, and the spine of the cover material to the paper material laminate inside The second adhesive is cured and cured while being held in a pressed state from the outside.

  According to the bookbinding method of the saddle stitch booklet of the present invention, the back portion of the paper laminate is hardened with the first adhesive, and the cover material is bonded to the first adhesive layer with the second adhesive, The first and second adhesives respectively entering the two streaks integrally form the back side surface of the paper material laminate and the back surface of the cover material (including the inside of the two streaks). It was made to adhere to. As a result, when the booklet bound by binding is opened on an arbitrary page, a force for forcibly bending the back portion 3c of the cover material 3 works, and as a result, the booklet is fixed substantially vertically to the back portion 3c. Further, the individual paper materials 2 are more horizontally oriented and can have excellent spreadability.

It is a cross-sectional view which shows typically an example of the perfect binding booklet obtained by the bookbinding method of this invention. It is explanatory drawing which shows an example of the process of the first half in the bookbinding method of the perfect binding booklet shown in FIG. FIG. 3 is an explanatory diagram illustrating an example of a latter half of the bookbinding method of the perfect binding booklet illustrated in FIG. 1. It is a figure which illustrates the outstanding spread property of the perfect binding booklet shown in FIG.

Hereinafter, an embodiment of a bookbinding method of a perfect binding booklet of the present invention will be described in detail with reference to the accompanying drawings. In the following, an example of a perfect binding booklet obtained by the bookbinding method of the present invention will be described with reference to FIG. As shown in FIG. 1, a perfect binding booklet 1 obtained by the bookbinding method of the present invention includes a paper material laminate 2 in which a predetermined number of paper materials are superposed, a back surface of which is the first adhesive layer 5 and the first adhesive layer 5. The adhesive layer 6 is bonded and fixed to the inner surface of the back portion 3c in the center region of the cover material 3 through the adhesive layer 6 of the second cover.

[Paper 2]
The paper material 2 forms a paper material laminate 2 by superimposing a predetermined number of the leaves. At this time, using a signature in which the paper material of each leaf is folded in half from the center, the respective signatures are aligned and overlapped to obtain a predetermined number of paper material laminates 2. May be.

Here, the paper material 2 can use the document normally used for the texts, such as a magazine and a notebook, without a restriction | limiting, irrespective of the kind. Specific examples of such paper materials include non-coated printing paper such as high-grade printing paper, intermediate printing paper, low-grade printing paper and thin-leaf printing paper; fine coating printing paper; art paper, coated paper, lightweight coated paper, etc. Coated printing paper; special printing paper such as color fine paper; information paper such as copy paper and copy paper, and the like. These can be used alone or in combination. Moreover, there is no restriction | limiting in particular also about the rice basic weight of a paper material, For example, the thing of the range of 40-150 g / m < ² > can be used. For example, when the booklet to be bound is a notebook, it is normal to use a paper material having a rice basis weight of around 70 g / m ² .

[Cover Material 3]
The cover material 3 has a rectangular shape with an area slightly larger than the sizes of the cover, back cover, and spine of the booklet 1 to be bound. In the central region, two streaks 4 and 4 are engraved in parallel with each other at a predetermined interval as will be described later. The interval between the two stripes 4 and 4 is set so as to be substantially equal to the thickness of the paper material laminate 2. In the bookbinding process, the cover material 3 is folded into a U-shape so that each of the lines 4 and 4 is inside, and the booklet cover 3a (or 3b) and back cover 3b are formed. (Or 3a) and the back portion (3c) are respectively formed into compartments. By this bending, the upper ends of the stripe 4 on the cover material surface come closer to each other, and the width thereof becomes smaller.

As the cover material 3, a conventionally known type used for a perfect binding booklet can be used. Specifically, coated printing paper such as art paper, coated paper, and lightweight coated paper; special printing paper such as colored fine paper can be used. There is no restriction | limiting in particular about the rice basic weight of a cover material, For example, the thing of the range of 80-200 g / m < ² > can be used.

  The type of the first adhesive 5 is not particularly limited, and conventionally known adhesives such as starch-based, glue-based, synthetic resin emulsion-based, and hot-melt-based adhesives can be used. Specific examples of the synthetic resin as the main component of the synthetic resin emulsion adhesive include acrylic resin, vinyl acetate resin, ethylene vinyl acetate resin, rubber, and the like, and these can be used alone or in combination. Moreover, as a hot-melt-type adhesive agent, what has ethylene vinyl acetate resin type | system | group, urethane resin type | system | group, rubber | gum etc. as a main component is mentioned, These can be used individually or in combination. The first adhesive 5 can be used by dissolving it in water when it is a solid or powder.

  Among the various adhesives, a synthetic resin emulsion system, particularly an ethylene vinyl acetate resin emulsion adhesive is preferable as the first adhesive 5. Further, those having a viscosity of 10,000 mPa / s or less, preferably 7000 to 10,000 Pa / s are particularly preferable. An example of such an adhesive is 7KM (MB bonding, manufactured by Hisao Matsumoto Shoten).

  The type of the second adhesive 6 is not particularly limited, and as in the case of the first adhesive 5, a conventionally known starch system, a glue system, and a synthetic resin emulsion system (1 Species or combinations of two or more types), and hot-melt adhesives based on the resin as the main component (one type or combinations of two or more types) can be used. The second adhesive 6 may be the same as or different from the first adhesive 5.

When the same adhesive as the first adhesive 5 is used as the second adhesive 6, a synthetic resin emulsion system, particularly an ethylene vinyl acetate resin emulsion adhesive is preferable. Further, those having a viscosity of 10,000 mPa / s or less, preferably 7000 to 10,000 Pa / s are more preferable. An example of such an adhesive is 7KM (MB bonding, manufactured by Hisao Matsumoto Shoten).

[Bookbinding method for wireless binding booklet]
Next, with reference to FIG.2 and FIG.3, one embodiment of the bookbinding method of the perfect binding booklet of this invention is described in order.

[Streak pushing process to cover material]
First, using a streak pusher (not shown), two streaks 4 and 4 are engraved in parallel with each other at a predetermined interval in the center region of the cover material 3. The width H of each stripe 4 (the width in the direction perpendicular to the longitudinal direction of the stripe on the back surface of the cover material 3) is set to 0.3 to 0.8 mm, preferably 0.4 to 0.7 mm. .

In the conventional bookbinding method of the perfect binding booklet, the width of the streaks engraved on the cover material is set to 1 mm or more, but in that case, the adhesive is not easily filled into the streaks, and as a result The present inventor has found that the inclusion of air makes the adhesive deteriorate significantly and the adhesive wraps around the throat. Therefore, in the present invention, by setting the width of each streak 4 to be smaller than that of the conventional one, the adhesive is more reliably filled in the streak 4 and further, the adhesive m is prevented from entering the throat. It is a thing. As the streak pusher, a conventionally known one having a streak-pushing rotating disk can be used, and the width of the streak 4 is set by adjusting the pressing force of the rotating disk to the cover material 3. Is called. Further, in order to keep the width H of the stripe 4 within the above range, a thinner rotating disk (not shown) may be used as appropriate.

[Process of superimposing cover material 3 on paper material laminate 2]
One streak 4 of the cover material 3 is folded and folded to the opposite side so that the streak 4 is on the outside, and this streak 4 is aligned with the back surface 2a of the paper material laminate 2. Laminate and arrange. At this time, the cover material 3 may be arranged on either the front surface (front cover) side or the back surface (back cover) side of the paper material laminate 2. (However, when the cover material 3 is arranged on the front cover side of the paper material laminate 2, the cover part 3a (or 3b) of the cover material 3 is directly in contact with the surface of the paper material laminate 2, When the cover material 3 is arranged on the back cover side of the paper material laminate 2, the back cover part 3a (or 3b) of the cover material 3 is arranged so as to be in direct contact with the back cover side of the paper material laminate 2. It is necessary to pay attention to this point.)

In this step, the paper material laminate 2 and the cover material 3 may be set as one set, and a plurality of sets may be overlapped. By carrying out like this, the 1st adhesive agent 5 can be apply | coated about several groups at once, and efficiency improvement of an operation | work is achieved. Note that, in either case of one set or a combination of a plurality of sets of the paper material laminate 2 and the cover material 3, it is preferable to keep the pressurized state in the thickness direction.

[First adhesive coating and drying step]
A first adhesive 5 is applied to the back surface of the paper material laminate 2 and the entire surface of the cover material stripe 4. When a plurality of sets as described above are combined, the adhesive 5 can be applied at a time while being kept in a pressurized state in the thickness direction. If necessary, the first adhesive 5 may be applied two or more times.

  In this way, the combination (one set or a plurality of sets) of the paper material laminate 2 and the cover material 3 to which the first adhesive 5 has been applied is kept in a pressurized state in the thickness direction. Dry until the adhesive 5 is completely cured. Drying can be performed by a conventionally known method. For example, it may be a method of leaving indoors for a day or night or longer.

[Application process of second adhesive]
Next, the second adhesive layer 6 is provided by applying the second adhesive 6 so as to overlap the dried and hardened first backing layer 5. The second adhesive 6 is applied over the entire length in the length direction of the stripe 4 with a width of 40 to 70% of the thickness of the laminated body 2 from the side of the paper material laminated body 2 on which the cover material 3 is disposed in an overlapping manner. .

[Step of folding the cover material back and covering the back of the laminate and the front and back noodles]
Immediately after the application of the second adhesive 6, the cover material 3 folded in half is folded into a U-shape by folding the cover material 3 so that each of the streaks 4 is inside. . Then, the back portion 2a and the front and back surfaces, to which the second adhesive layer of the paper material laminate 2 is applied, are respectively wrapped by the cover material 3 folded in a U-shape. At this time, the inside of one streak 4 filled with the first adhesive 5 and the back surface of the paper material laminate 2 are held integrally fixed by the first adhesive layer 5. To.

[Step of drying second adhesive]
A heating tool 10 is used to heat the second adhesive 6 against the back 3c of the cover material 3 from the outside toward the inner paper material stack 2 and heat the second adhesive 6 to the back of the paper material stack 2. And the inner surface of the cover material 3 are diffused over the entire surface of the first adhesive layer 5 and filled in the other streaks 4 not filled with the first adhesive 5. The second adhesive 6 is cured and cured while being pressed by. Thus, the bookbinding operation is completed and the perfect binding booklet 1 is obtained.

  Since the booklet 1 obtained in this way is securely bonded and fixed between the cover material 3 and the paper laminate 2 by the first adhesive layer 5 and the second adhesive layer 6, as shown in FIG. When opening on an arbitrary page, a force for forcibly bending the back portion 3c of the cover material 3 works, whereby the individual paper material 2 fixed substantially vertically to the back portion 3c becomes more horizontally oriented, As a result, excellent spreadability can be obtained.

  Even if the inner surface of the cover material 3 and the back surface of the paper material laminate 2 are not sufficiently adhered by the second adhesive layer 6, the two cover materials 3 are also provided. The streaks 4 and 4 are cured in a state in which the first adhesive 5 and the second adhesive 6 are securely filled, respectively, and the adhesive layers 5 and 6 on the back of the paper laminate 2 are Become one. Therefore, when the booklet 1 is opened on an arbitrary page, both side edges are filled in the streaks, and the adhesive layers 5 and 6 composed of two layers are forcibly curved, and thus excellent spreadability is obtained. Will be.

  The bookbinding method of the perfect binding booklet of the present invention can be applied to bookbinding of various kinds of simple binding booklets, but can be effectively applied to bookbinding of booklets such as about 30 to 300 notebooks.

1 Binding booklet 2 Paper material (paper material laminate)
3 Cover material 3a Front cover part 3b Back cover part 3c Back part of cover material 4 Line 5 First adhesive (layer)
6 Second adhesive (layer)
10 Heating tool
H stripe width

Claims (4)

A step of engraving two stripes in the center of the back surface of the cover material in parallel with an interval substantially matching the thickness of the paper material laminate;
A step of folding the cover material on one side of the streaks and folding the cover material substantially in half, aligning the one streak with the back surface of the paper material laminate, and stacking the cover material;
Applying the first adhesive continuously from the back surface of the paper material laminate to one streak of the cover material, and then drying it;
The second adhesive is overlapped on the first backing layer from the side of the paper material laminate on which the cover material is overlapped, and the width of the second adhesive is 40 to 70% of the thickness of the paper material laminate. The paper material laminate is formed by applying the cover material folded over the entire length in the length direction and then folding the folded back cover material so that each of the streaks is inside and folding it back into a U-shape. Wrapping the back portion and the front and back surfaces coated with the second adhesive layer;
Pressing from the outside while heating the spine portion of the cover material using a heating tool, the second adhesive from the entire surface of the first adhesive layer excluding the one streak and its vicinity, out of the streaks Continuously diffusing into the other,
Curing the second adhesive while keeping the back of the cover material facing the inner layer of the stack of paper material while being pressed from the outside, and binding the booklet.   2. The bookbinding method according to claim 1, wherein each of the two lines has a width of 0.3 to 0.8 mm on the back surface of the cover material in a direction orthogonal to the length direction thereof.   The bookbinding method of a perfect binding booklet according to claim 1 or 2, wherein the first adhesive is at least one selected from a starch system, a synthetic resin emulsion system, a hot melt system, and a glue system.   The bookbinding method of a perfect binding booklet according to any one of claims 1 to 3, wherein the second adhesive is at least one selected from a starch system, a synthetic resin emulsion system, a hot melt system, and a glue system. .

Images