JPH06278933A - Bound paper worked article and metal mold for binding work - Google Patents

Abstract

PURPOSE:To uniformalize the adhesion pressure in an uneven part, prevent the breakage of paper, and improve the certainty of adhesion, as for a bound paper worked article and a metal mold for binding. CONSTITUTION:Each sectional shape of the uneven parts 14a and 14b which are formed by heating and pressing a plurality of paper sheets 10a which has surfaces coated with an adhesive substance which are put one upon another, to a curved surface which is constituted by smoothly varying the radius of curvature, and the pressing force applied to the paper sheets 10a is effectively dispersed along the shapes of the uneven parts 14a and 14b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bound paper product and a binding die for producing the bound paper product.

[0002]

2. Description of the Related Art Conventionally, a calendar generally used as a bound paper product is shown in FIG. 6 in a state where 12 sheets of turning paper coated with ink as an adhesive substance are superposed on the upper edge portion in a printing process. As described above, the male die 3 and the female die 4 each having the convex portion 1 and the concave portion 2 having a trapezoidal cross section are pressed and heated, so that they are united by the adhesive force of the ink. Then, the calender 5 thus united has an uneven portion 6 having a crank-shaped cross-sectional shape.

[0003]

By the way, in the calender 5 as described above, since the uneven portion 6 is formed in a crank shape, the corner portion 6a is formed from the surface of the turning paper 5a. As a result, an upright surface 6b that bends and rises sharply is formed. However, when forming such a concavo-convex portion 6, the male mold 3 and the female mold 4 do not come close to the turning paper 5a in the perpendicular direction at the part of the upright surface 6b, so that part. It is difficult to adjust the pressing force at. Moreover, in order to surely bond the vertical surface 6b,
If the close distance between the male mold 3 and the female mold 4 on the upright surface 6b is set to be small, the frictional force of the molds 3 and 4 becomes excessive and the turning paper 5a is torn. The problem occurs. Further, when set as described above, the pressure applied over the entire area of the concave-convex portion 6 becomes non-uniform, and the pressure applied to the portion other than the upright surface 6b becomes incomplete, and reliable bonding is performed. There is a problem that you cannot do it.

The present invention has been made in view of the above-mentioned circumstances, and is a binding method in which the adhesive pressure in the concave and convex portions is made uniform to prevent tearing of the paper and improve the reliability of the adhesive. It is intended to provide a paper product and a binding die.

[0005]

In order to achieve the above object, the present invention proposes the following four means. A first means is a bound paper product in which a plurality of sheets of paper, which are coated with an adhesive substance on the surface thereof, are heated and pressed to bend the sheets of paper and form a concavo-convex portion to be bound together. , A cross-sectional shape of the uneven portion is proposed to be a bound paper product formed into a curved surface formed by smoothly changing the curvature, and the second means is that the uneven portion has the entire length in the width direction of the paper. A binding paper work product formed in a band shape over the above is proposed, and a third means is a binding method in which a plurality of uneven portions are formed in a spot shape arranged at intervals on the surface of the paper. Proposed laminated paper products. Further, the fourth means comprises a male mold and a female mold which are arranged with a plurality of sheets of paper, which are coated with an adhesive substance and superposed on each other, sandwiched between the molds. A binding die that binds while forming uneven portions by heating and pressing, wherein the convex portion of the male die and the concave portion of the female die that form the uneven portion have a smooth curvature. We have proposed a binding die with a curved shape that is configured by changing the shape.

[0006]

According to the bound paper product according to the first means of the present invention, since the cross-sectional shape of the uneven portion is formed into a curved surface formed by smoothly changing the curvature, it is applied by the mold. The applied pressure is effectively dispersed along the shape of the uneven portion, and reliable pressure and adhesion are performed over the entire area of the uneven portion. As a result, a bound paper product that does not easily peel off even after long-term use is constructed. According to the bound paper product according to the second means, the strength against bending in the width direction is improved by the uneven portion formed over the entire length in the width direction of the paper. According to the bound paper work product according to the third means, by forming the uneven portion in a spot shape, the pressing force applied by the mold is concentrated on the uneven portion, and the paper is reliably bonded. . Moreover, by arranging a plurality of the concave and convex portions at intervals, reliable bonding can be performed over a wide range. According to the binding processing die according to the fourth means,
The paper sandwiched between the male mold and the female mold distributes the applied pressure along the convex part of the male mold and the concave part of the female mold so that it is uniform over the entire uneven part. It will be pressurized.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the bound paper product and the binding die (hereinafter simply referred to as die) according to the present invention will be described below with reference to FIGS. The bound paper product 10 of this embodiment is, for example, as shown in FIG.
A calender formed by the mold 11 shown in FIG.

The mold 11 includes a male mold 12 which is arranged below the flipping paper 10a and is stacked in a state where ink (not shown) which is a kind of an adhesive substance is applied to the surface of the mold 11.
The male mold 12 is provided with a female mold 13 that is brought close to the male mold 12 from above. The male mold 12 has a placing surface 12a horizontally arranged to support the turning paper 10a of the calendar 10 from below, and a protrusion 12b (convex portion) and a protrusion 12c protruding from a part of the placing surface 12a. (Convex portion). The female die 13 has a horizontal surface 13a facing the mounting surface 12a of the male die 12,
The projection 12b of the male mold 12 is opposed to the groove 13b (concave part) capable of accommodating the projection 12b and the projection 12c of the male mold 12, and the projection 12c. And a concave portion 13c (concave portion) capable of accommodating

The projection 12b and the groove portion 13b are formed in a strip shape over the entire length of the turning paper 10a to be arranged between them in the width direction, and the turning paper 10a is fixed at an intermediate position in the longitudinal direction. The concavo-convex portion 14a bent in a sectional shape can be formed.
Further, the protrusion 12c is formed in a substantially hemispherical shape, and is placed on one side of the mounting surface 1 partitioned by the protrusion 12b.
2a are arranged in the horizontal direction at intervals. Then, by arranging and sandwiching the turning paper 10a between the projections 12c and the recesses 13c arranged in the same number as the projections 12c, the turning paper 10a is locally bent to form a spot shape. The concavo-convex portion 14b can be formed.

Here, the projection 12b and the groove portion 13b of this embodiment are formed in a substantially semicircular shape in their cross-sectional shape, that is, a cut shape cut along a plane orthogonal to the projection 12b and the groove portion 13b. . In addition, in the projection 12b, the cross-sectional shape of the connection portion 12d between the mounting surface 12a and the projection 12b and the groove 13b at the connection portion 13d between the horizontal surface 13a and the groove 13b cause the curvature to change rapidly. So that the cross-sectional shape does not have a discontinuous corner or the like, the connection is smoothly made by an arc shape. Further, also in the protrusion 12c and the recess 13c, the mounting surface 12a and the horizontal surface 13a
In the connecting portions 12e and 13e with and, all the vertical cross-sectional shapes are smoothly connected by the arc shape so as not to change the curvature sharply.

With the die 11 constructed in this way,
To form the calendar 10, a plurality of turning papers 10a
In the state where the ink is applied to the surface of one edge portion of the sheet, the portions to which the ink is applied are sandwiched by the mold 11 and a pressing force is applied in a direction perpendicular to the mounting surface 12a, as shown in FIG. At the same time, it is heated at a constant temperature. As a result, the turning sheets 10a are fixed to each other by the adhesive force of the ink interposed therebetween. Then, the turning paper 10a is formed with a band-shaped uneven portion 14a at a position sandwiched between the protrusion 12b and the groove 13b, and a spot-shaped uneven portion 14b at a position sandwiched between the protrusion 12c and the recess 13c. Will be formed.

Here, the turning paper 10a sandwiched between the male die 12 and the female die 13 at the positions of the projection 12b, the groove 13b and the projection 12c, and the recess 13c is in a direction not perpendicular to the paper surface. The pressing force will be applied. However, according to the mold 11 of the present embodiment, since these cross-sectional shapes are formed by the curved surface shape so as not to change the curvature abruptly, the pressing force applied to the turning paper 10a is locally excessive. The protrusion 12
b. Dispersed effectively along the surfaces of the protrusions 12c. As a result, it is possible to generate a uniform pressing force over the entire area of the concavo-convex portions 14a and 14b and perform reliable bonding. Further, since no unreasonable frictional force acts on the turning paper 10a, it is possible to avoid defects such as tearing of the turning paper 10a due to the formation of the uneven portions 14a and 14b, and to manufacture a good calendar 10. it can.

On the other hand, in the calender 10 formed by the mold 11 of the present embodiment, as shown in FIG. 3, the protrusions 12b and the grooves 13b form a band-shaped uneven portion 14a over the entire length in the width direction. Therefore, the bending strength in the width direction is improved, and it is possible to prevent the calendar 10 from being deformed in the width direction, for example, when it is hung on a wall, or when the flipping paper 10a is turned over. Moreover, by reducing the width and the like of the uneven portion 14a, the pressure applied by the mold 11 can be concentrated and the adhesive force of the turning paper 10a can be improved, so that the bending strength can be improved. It is possible to form the uneven portion 14a with improved adhesive strength.

Further, since the spot-shaped uneven portion 14b formed by the projection 12c and the concave portion 13c is formed to have a small area, the pressure applied by the mold 11 can be concentrated on the uneven portion 14b. It is possible to improve the reliability of adhesion. Further, by using a plurality of spot-shaped uneven portions 14b, the turning paper 10
It is possible to adhere a over a wide range, and it is possible to reliably prevent peeling of the turning paper 10a.

The following techniques can be applied to the binding paper product 10 and the binding mold 11 of the present invention. Although it has been decided that the present invention is applied to the binding of the calendar 10, the present invention is not limited to the calendar 10 and can be applied to any bound paper product. Bound paper product 10 and binding in which band-shaped uneven portions 14a formed over the entire length in the width direction of the bound paper product 10 and spot-shaped uneven portions 14b arranged at intervals are individually arranged. To configure the die 11 for matching processing. The cross-sectional shape of the uneven portions 14a and 14b is a semicircular shape or a hemispherical shape, but instead of this, an arbitrary curved surface shape may be used. In that case, it is assumed that the cross-sectional shape is configured by a smooth curved surface shape that does not change the curvature sharply. In particular, the spot-shaped uneven portion 14
In b, by using an arbitrary shape or a plurality of kinds of shapes, a design effect can be obtained. Providing a plurality of concavo-convex portions 14a in parallel to form a wavy shape as a whole. Although the projection 12b and the projection 12c, the groove 13b and the recess 13c are formed in the integrated mold 12 and 13, respectively, instead of this, as shown in FIG. Each of the parts 13b and 13c, or a plurality of convex parts 12b and 12c and concave parts 13b and
The molds 12 and 13 should be divided for each 13c. The convex parts 12b and 12c and the concave parts 13b and 13c are
As shown in FIG. 5, form in multiple stages. Ink was used as the adhesive material for turning paper 1.
In the printing process of 0a, since the adhesive substance can be applied at the same time as the printing of the pattern, it is possible to reduce the process, but it is not limited to this, and it can be activated by heating and / or pressing. Use any adhesive.

[0016]

As described in detail above, in the bound paper work product according to the first means of the present invention, the cross-sectional shape of the uneven portion formed by applying pressure while heating changes the curvature smoothly. Since it has a curved surface shape configured as follows, the following effects can be obtained. It is possible to effectively disperse the pressing force along the uneven portion and to make the pressing force uniform over the entire uneven portion, so that a bound paper product that does not easily peel off can be obtained. As a result, the strength and durability of the bound paper product can be improved. In the bound paper product according to the second means of the present invention, since the uneven portion is formed in a strip shape over the entire length in the width direction of the paper, in addition to the effect of the first means, the bending strength in the width direction is obtained. The effect of being able to improve. Further, the bound paper product according to the third means of the present invention is
Since the concavo-convex portion is formed in a spot shape arranged on the surface of the paper at intervals, in addition to the effects of the first and second means, the concavo-convex portion having a small area causes the pressing By increasing the pressure applied to the portion and dispersing the uneven portion on the surface of the paper, it is possible to achieve a wide range of reliable adhesion. further,
A binding die according to a fourth aspect of the present invention is a curved surface shape in which a convex portion of a male die and a concave portion of a female die that form an uneven portion are formed by smoothly changing a curvature. Therefore, the following effects are obtained. Since the pressing force applied to the paper can be effectively dispersed along the uneven portion, it is possible to prevent locally excessive pressing force from acting on the paper, prevent tearing of the paper, etc. A bound paper product can be manufactured. Since the frictional force between the mold and the paper is reduced, the durability of the mold can be improved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a bound paper product and a binding die according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a pressed state of paper by the mold of FIG.

FIG. 3 is a perspective view showing a bound paper work product formed by the mold of FIG. 1.

FIG. 4 is a vertical sectional view showing another embodiment of the binding die of FIG.

5 is a longitudinal sectional view showing another embodiment of the binding die of FIG. 1. FIG.

FIG. 6 is a vertical sectional view showing a conventional example of a binding die.

[Explanation of symbols]

 10 Calender (binding paper work product) 10a Turning paper (paper) 11 Mold (mold for binding processing) 12 Male mold 12b Projection (convex part) 12c Projection (projection part) 13 Female mold 13b Groove part (Concave part) 13c Recessed part (concave part) 14a / 14b Concavo-convex part

Claims (4)

[Claims] 1. A bound paper product, wherein a plurality of sheets of paper, which are coated with an adhesive substance on the surface and are stacked, are heated and pressed to bend the sheets of paper and form an uneven portion to be bound together. A bound paper product, wherein the cross-sectional shape of the uneven portion is a curved surface shape formed by smoothly changing the curvature. 2. The bound paper product according to claim 1, wherein the uneven portion is formed in a strip shape over the entire length in the width direction of the paper. 3. The bound paper work product according to claim 1, wherein the uneven portions are formed in a spot shape in which a plurality of uneven portions are arranged on the surface of the paper at intervals. 4. A male mold and a female mold, which are arranged by sandwiching a plurality of sheets of paper, each of which is coated with an adhesive substance on the surface of the sheet, and which is sandwiched between the molds, while heating the sheet of paper between the molds. A binding die for binding while forming an uneven portion by applying pressure, wherein the convex portion of the male die and the concave portion of the female die forming the uneven portion smoothly change the curvature. A die for binding processing, which is characterized by having a curved surface shape configured as follows.