JP2003226080A - Thread-sewed booklet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the antifalsifying effects of a passport booklet by a method wherein a firm and durable sewing is performed without applying adhesive such as starch or the like to the fine line of the thread-sewed passport booklet. <P>SOLUTION: To the thread employing for the sewing of the passport booklet, a composite thread made of chemical fibers fusing or deforming under heat and pressure is employed. Further, by applying heat and pressure to the fine line of the passport booklet, a sewing thread or sewing threads are deformed and fused together and finally hardened. Thus, the sewing thread becomes hard to be frayed, resulting in improve of the antifalsifying effects of the passport booklet. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread binding booklet such as a passport booklet which is required to prevent forgery and falsification.

[0002]

2. Description of the Related Art Conventionally, a thread binding booklet such as a passport booklet is formed by stacking a required number of printed sheets of a predetermined size with a booklet binding device, and then thread-stitching with a sewing machine. An adhesive is applied along the thread on the back, which is the side, and a cover is attached so as to cover the thread. In the method of applying the adhesive to the yarns, the adhesive is applied to the surface of the roller and then the roller surface is pressed vertically to the yarns in the booklet. The purpose of applying the adhesive to the threads is to prevent the threads from fraying by adhering the threads used for thread binding and the threads to the paper by utilizing the capillary action. Also,
By applying the adhesive from the back thread on the back side of the booklet, the cover sheet can be concealed by attaching the cover sheet, which enables more firm thread binding and provides the effect of preventing the binding thread from fraying.

In particular, in the case of false alteration or tampering of a passport booklet, the binding thread is often unwound and only the personal page in which the personal data is written is replaced. As a method for preventing this, a booklet binding method in which an adhesive agent is used to permeate the adhesive agent between the fibers in a binding thread or holes made by a sewing machine needle to make the adhesive agent strong by a capillary phenomenon (Japanese Patent Laid-Open No. HEI 2- 172
However, this requires a drying time for curing the adhesive impregnated in the yarns, which makes continuous production impossible and significantly lowers productivity.

In order to solve this problem, a booklet binding apparatus in which an ultraviolet-curable adhesive is usually used instead of the glue so that the adhesive is instantly forced to dry by irradiating with ultraviolet rays (Japanese Patent Laid-Open No. Hei 10-1999) (See JP 11-245535).
There is.

However, since this apparatus irradiates ultraviolet rays using an ultraviolet illuminating lamp immediately after applying the ultraviolet curable adhesive and dries instantly, the ultraviolet curable adhesive does not penetrate into the binding yarn and the ultraviolet ray is not absorbed. The curable adhesive cures only on the surface layer, and as a measure against forgery, the expected effect is not obtained at present. Therefore, in order to solve this problem, after applying the ultraviolet curable adhesive to the binding yarn, ultraviolet rays may be radiated after a certain period of time elapses. Therefore, there is a problem in that the work efficiency is poor.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to solve these problems and provides a robust thread binding that does not fray easily without applying adhesive such as glue to the threads of the thread-bound passport booklet. It is to improve the anti-counterfeiting effect of the passport booklet.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a thread binding booklet in which a substantially central portion of a laminated sheet in which a plurality of sheets are laminated is sewn with a needle thread and a bobbin thread. One or both, part or all of which is a heat-meltable (thermoplastic) material, and the thread binding in which the intersection between the upper thread and the lower thread and the overlapping section of the lower threads or either one of these is melted and fixed. It is a booklet.

According to the present invention, there is provided a thread binding booklet in which a substantially central portion of a laminated sheet in which a plurality of sheets are laminated is sewn with an upper thread and a lower thread, and either one or both of the upper thread and the lower thread are used. Part or all of it is a heat-meltable (thermoplastic) material,
This is a thread binding booklet in which the intersection of the upper thread and the lower thread, the overlapping section of the lower threads, or any one of these is melt-fixed and deformed.

The present invention is a thread binding booklet in which the upper thread and the lower thread are made of fibers having different melting points.

The present invention is a yarn binding booklet made of a composite yarn in which the upper yarn and the lower yarn are twisted together with a plurality of yarns having different melting points.

The present invention is a thread binding booklet in which the upper thread and the lower thread are made of chemical fibers.

The present invention is a thread binding booklet in which the upper thread and the lower thread are made of a composite fiber of a chemical fiber and a natural fiber.

The present invention is a thread binding booklet in which the chemical fibers are made of polypropylene and polyester.

The present invention is a thread binding booklet in which the sewing machine stitch is a double chain stitch.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A thread binding portion of a thread binding booklet having a forgery and falsification preventing function of the present invention is shown in FIG.
It has a sectional structure as shown in FIG. Figure 1 (a)
The upper thread 6 and the lower thread 7 of the thread binding booklet 2 are heated, and the heat fusion portion 1
FIG. 1B is a view in which the upper thread 6 and the lower thread 7 of the thread binding booklet 2 are heated and then pressed to form the pressure forming portion 12 in FIG. 1B. is there. On the other hand, the upper thread 6 and the lower thread 7 shown in FIGS. 1A and 1B are heat-meltable threads.

Further, in the thread binding booklet 2 of this embodiment, as shown in FIG. 2, the substantially central portion of the laminated sheet 4 in which the sheets 3 are laminated is thread-stitched with the heat-meltable composite thread 1, and the thread 5 is formed. It is formed. The thread binding method is double chain stitch, and the thread binding booklet 2
A cross-sectional view of the yarn binding portion is shown in FIG. Also,
As the threads used for the upper thread 6 and the lower thread 7 of the thread binding booklet 2 of this embodiment, the composite thread 1 as shown in FIGS. 4 (a), 4 (b) and 4 (c) is used. As a result, the upper thread and the lower thread are melted at a relatively low temperature, which facilitates fusion or deformation.

The yarn binding booklet 2 bound with the composite yarn 1 is
When heated or heated and pressed, the composite yarn 1 or the composite yarns 1 are deformed, fused, or the like, and then hardened to be hard to be frayed, and the effect of preventing forgery or falsification of the passport booklet can be improved. it can.

[0018]

EXAMPLE First, a mode of the thread binding booklet 2 of this example is shown in FIG.
Shown in. FIG. 2 is a perspective view showing a yarn binding booklet 2 bound with the composite yarn 1. As the booklet manufacturing method, a thread binding booklet 2 is constituted by a laminated sheet 4 in which a plurality of sheets 3 are laminated by using a booklet binding device (not shown) or the like, and a substantially central portion of the sheet 3 is used as a needle thread by a sewing machine. As a result of stitching the two lower threads, the thread 5 was formed.

Next, FIG. 3 shows a booklet binding device and the like.
Booklet 2 in which booklet 2 is bound with upper thread 6 and lower thread 7 by a sewing machine.
FIG. 6 is a cross-sectional view of the thread binding portion of the above, in which the upper thread 6 and the lower thread 7 are sewn together at the lower portion of the laminated sheet layers 4. As a result, the needle hole 8 formed by the sewing needle is also formed. In this sewing method, the upper thread 6 is penetrated through the seat layer 4, and the lower thread 7 is entwined with the upper thread 6 at the lower portion of the sheet layer 4 to be sewn by a "double chain stitch" sewing method. In the present embodiment, the "double chain stitch" binding method using the upper thread and the lower thread has been described, but the present invention is not limited to this method, and a "fast stitch" binding method or the like may be used.

The thread-bound booklet 2 produced by the above-described method is then heated. At this time, when the thread-bound booklet 2 is heated from above and below, it does not affect the sheets of the passport booklet, such as burning. It is preferable that the melting point is reached at the temperature of 100 ° C. to 200 ° C. Next, the thread binding booklet 2 bound by the "double chain stitch" shown in FIG.
When heated at a heating temperature of about ℃, the crossing portion 9 of the upper thread 6 and the lower thread 7 and the overlapping portion 10 of the lower thread 7 are as shown in FIG.
As shown in (a), the upper thread 6 and the lower thread 7 are deformed and fused by heat to form the heat-sealed portion 11.

For this reason, in the present embodiment, the binding yarns are fused and deformed, so that the binding yarns are fused and deformed rather than the method of applying glue and adhering to the back yarns on the back side of the booklet. A booklet that is more resistant to forgery and tampering can be provided without fraying.

Further, as a method for firmly fusing the binding yarn, the upper yarn 6 and the lower yarn 7 of the yarn binding booklet may be heated and then pressed. For example, the thread binding booklet 2 bound by the “double chain stitch” shown in FIG. 3 is formed with the heat-sealed portion 11 of the upper thread 6 and the lower thread 7 as shown in FIG. After that, Figure 1
As shown in (b), the upper thread 6 and the lower thread 7 are deformed by pressure, and as a result, the pressure deforming portion 12 is formed, so that the deformation amount becomes more remarkable, and forgery and falsification are prevented. It will be more difficult.

FIG. 4 is a schematic model diagram showing an example of the cross section of the composite yarn used in this embodiment.
(A), FIG.4 (b), and FIG.4 (c) have shown the double yarn in all. The composite yarn 1 shown in FIG. 4 (a) is made up of chemical fibers 13 having a melting point (A), both of which are twin yarns. In the composite yarn 1 shown in FIG. 4B, one of the two yarns is a chemical fiber 13 having a melting point (A), and the other one is a chemical fiber 14 having a melting point (B). At this time, the melting point (A) is a lower melting point than the melting point (B), and the melting point (A) is a temperature within a range that does not affect the sheet (paper) of the passport booklet, such as burning, when heated. That is, the melting point is about 100 ° C to 200 ° C. Also, FIG.
In the composite yarn 1 shown in (c), one of the two is a melting point (A) chemical fiber 13 and the other is a natural fiber 15
It is composed by.

The composite yarn used in this embodiment is
At least one of the constituent yarns is composed of the low melting point (A) chemical fiber 13, and the melting point (A) of the chemical fiber 13 is a fusion component or It acts as a deforming component and brings about the effect of the present invention. For example, the composite yarn according to the present invention is preferably a composite yarn in which one of the constituent yarns is a low melting point 160 ° C. chemical fiber polypropylene and the other is a high melting point 250 ° C. chemical fiber polyester. The combination is not limited to this.

[0025]

EFFECTS OF THE INVENTION The yarn used for binding the passport booklet is made into a composite yarn composed of chemical fibers that are fused or deformed by heating, and the yarns of the bound booklet are heated and pressed to fuse or deform the yarns. Further, it is further hardened, whereby the difficulty of fraying is improved and the effect of preventing forgery / alteration of the passport booklet can be improved.

Furthermore, since the yarn used for binding the passport booklet is a composite yarn of long-fiber chemical fibers, there is no lint generated when the yarn is cut, and the quality of the passport booklet is improved. The measures to remove lint, which have been taken so far, are no longer necessary.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a fused state and a deformed state of a composite yarn of a yarn binding booklet according to the present invention.

FIG. 2 is a perspective view showing a booklet bound with a composite yarn according to the present invention.

FIG. 3 is a sectional view of a booklet showing a thread binding method for a sewing machine according to the present invention.

FIG. 4 is a schematic model diagram showing an example of a cross section of a composite yarn according to the present invention.

[Explanation of symbols]

1 composite yarn 2 thread binding booklet 3 sheets 4 laminated sheets 5 thread 6 Upper thread 7 bobbin thread 8 needle holes 9 Intersection of upper thread and lower thread 10 Overlap of bobbin thread 11 Thermal fusion part 12 Pressurized deformation part 13 Chemical fiber with melting point (A) 14 Chemical fiber with melting point (B) 15 Natural fiber

Claims (8)

[Claims] 1. A thread binding booklet in which a substantially central portion of a laminated sheet in which a plurality of sheets are laminated is sewn with an upper thread and a lower thread, and one or both of the upper thread and the lower thread are partially formed. Alternatively, a yarn binding booklet, which is entirely made of a heat-meltable (thermoplastic) material, in which an intersecting portion of the upper yarn and the lower yarn, an overlapping portion of the lower yarns, or any one of these is melt-fixed. 2. A thread binding booklet in which a substantially central portion of a laminated sheet in which a plurality of sheets are laminated is sewn with an upper thread and a lower thread, and one or both of the upper thread and the lower thread are partially formed. Alternatively, a booklet of a booklet in which all are heat-meltable (thermoplastic) materials, and the crossing portion of the upper thread and the lower thread, the overlapping portion of the lower thread, or either one of them is melt-fixed and deformed. . 3. The yarn binding booklet according to claim 1, wherein the upper thread and the lower thread are made of fibers having different melting points. 4. The yarn binding booklet according to claim 1, wherein the upper yarn and the lower yarn are made of a composite yarn obtained by twisting a plurality of yarns each having a different melting point. 5. The thread binding booklet according to claim 1, wherein the upper thread and the lower thread are made of chemical fibers. 6. The thread binding booklet according to claim 1, wherein the upper thread and the lower thread are made of a composite fiber of a chemical fiber and a natural fiber. 7. The yarn binding booklet according to claim 5, wherein the chemical fibers are made of polypropylene and polyester. 8. The thread binding booklet according to claim 1, wherein the sewing stitch is a double chain stitch.