JP2000247078A - Sheet bundle binding implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance close adhesive properties of a sheet with a binding implement and to allow a sheet bundle to be scarcely released by forming the implement of a synthetic resin having a structure in which a carbon part of a carbonyl group is directly bonded to an aromatic ring in a repeating unit of a polymer. SOLUTION: In the sheet bundle binding implement made of a synthetic resin, a binding part of a flat file is, for example, formed of a clamping band 1, a holding plate 2 having two through holes 2a for passing the band 1, and a locking dowel 2b for locking the band 1 to a predetermined position. In this case, a synthetic resin having a structure in which a carbon part of a carbonyl group is directly bonded to an aromatic ring in a repeating unit of a polymer is used as a molding material. Thus, since the carbon part of the carbonyl group is directly bonded to the ring, a π electron on the ring attracts the group through the group and the carbon part. Thus, the ring has electron attractive properties, and close adhesive properties of the sheet to the implement are enhanced so that the bound bundle can be scarcely released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device, such as a clip, a fastener, a binding pin, a binder, a file, etc., which can collectively organize and store a plurality of paper bundles.

[0002]

2. Description of the Related Art Conventionally, there are two types of paper bundle binding devices: one that binds a sheet without opening the paper and the other that binds the hole. For binding without opening the paper, there are two types of binding: binding the bundle of paper with the holding force generated by springs or the elastic force of the material between the binding components, and binding the opening to the paper. There is an object in which a bundle of paper is bound by pushing, screwing, and fitting the leading end and the middle part of the binding part through a stick or a string-like part with another part. These paper bundle binding devices use molded products made of synthetic resins such as polypropylene, polyvinyl chloride, polystyrene, polycarbonate, acrylonitrile styrene copolymer, and polyester resin in order to improve workability and reduce costs. There are many.

[0003]

A conventional paper bundle binding device made of a synthetic resin molded product generally has a low frictional resistance between the synthetic resin and the paper, so that the paper bundle holding force is weak and the bound paper bundle is likely to come off. There was a problem.

[0004]

That is, the present invention is characterized by comprising a synthetic resin having, at least in a repeating unit of a polymer, a structural portion in which a carbon portion of a carbonyl group and an aromatic ring are directly bonded. The paper binding device is the gist.

[0005] Synthetic resins having a structural portion in which a carbon portion of a carbonyl group and an aromatic ring are directly bonded in at least a repeating unit of a polymer include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, and the like. Poly-1,4-
Examples thereof include cyclohexane dimethylene terephthalate, which can be used alone or as a mixture of two or more. Further, those obtained by copolymerizing two or more kinds of structural parts in which the carbon part of the carbonyl group and the aromatic ring are directly bonded can also be used.

The paper bundle binding device of the present invention is such that the members of the binding device come into contact with the paper and the members of the binding device come into contact with each other and are fitted to each other to pinch or fix the paper bundle.
Flat file, letter file, spring file, upright (U) file, clip file, Z-type file, high clip file, fastener, clip, folder, holder, transparent pocket type, pin type file , Drawing files,
Case file, clear file, press file,
There are brochure files, document files, hanging folders, round spring files, and small files, AZ files, excon files, cap type files, screw type files, hook type files, etc. Pipe type binder,
There are a stand type binder, a hooking type OP binder, a Z type OP binder, a letter OP binder, a ring type OP binder, a stand type OP binder, a binding pin, and a screw.

[0007]

Since the carbon portion of the carbon-oxygen double bond resulting from the electron-withdrawing property of the carbonyl group is directly bonded to the aromatic ring, the π electrons on the aromatic ring are attracted to the carbonyl group through the carbon portion of the carbonyl group. . Therefore, the aromatic ring has an electron-withdrawing property. The electrons on the hydroxyl groups and oxygen atoms in the cellulose, which is a component of the paper, are attracted to the aromatic ring having an electron-withdrawing property. It is hard to come off.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. An example is shown in FIG. 1 and FIG. 2 which is a sectional view taken along the line II ′ of FIG. The binding portion is generally called a flat file. The binding portion basically includes a stopper band 1, two through holes 2a for passing the stopper band 1, and a locking piece 2b for locking the stopper band 1 at a predetermined position. And a holding plate 2 having Also,
The binding portion and the cover 3 are combined to form a paper bundle binding device called a flat file. As shown in FIG. 2 which is a cross-sectional view taken along the line II ′, the locking piece 2 b has a space for holding the stopper band 1 between the holding piece 2 and the holding plate 2.
The stopper piece 2b is slid on the stopper band 1 protruding from the position a, and the stopper band 1 is pinched and fixed. At each end of the stop band 1,
The paper bundle can be stapled by passing it through each hole of the paper bundle P with two holes formed by a punch or the like, passing through the through hole 2a of the sandwiching plate 2, and then locking it with the locking piece 2b.

FIG. 3 shows still another example. The binding device of the present example is inserted into a binding hole 4 formed in a paper P to be bound.
A binding pin 5 having a flange portion 5a at one end and a male screw portion 5b at the other end, and a ring body 6 fitted to the male screw portion 5b of the binding pin 5, the male screw of the binding pin 5 By press-fitting and fixing the ring body 6 to the ring-shaped portion 5b, the paper bundle P is sandwiched and continuously bound between the flange 5a and the ring body 6.

Here, the projection 7 formed on the male screw-shaped portion 5b is a helically continuous integral body extending from the vicinity of the flange 5a to the vicinity of the tip of the male screw-shaped portion 5b. The ring body 6 is designed for easy attachment and detachment. Instead of forming the projections 7 into a spirally continuous integral body, a plurality of annularly formed projections may be formed at regular intervals. In any case, when attaching the ring body 6, the projection 7
Are fitted so as to get over.

The binding pin 5 has a hollow hole 8 as a hollow portion at the tip of the male screw portion 5b, into which a stopper pin 9 having a flange 9a is press-fitted. The tip of the portion 5b is hidden and the binding pin 5 is prevented from being deformed and the reliability of fixing the ring body 6 is improved. With such a configuration, it is possible to bind a bundle of about 50 to 200 sheets depending on the length of the male screw-shaped portion 5b of the binding pin 5, but in particular, an arbitrary amount of paper is set according to the thickness of the bundle. A bundle can be bound.

FIG. 4 shows still another example. This is an example of a paper bundle binding device generally called a pipe type file, and includes a holding body 10, a locking body 11, and a cover 12. Basically, a holding body 10 including a locking plate 10a and an insertion rod 10b, and a locking body 11 fixed to a cover sheet.
It consists of FIG. 5 is a sectional view taken along the line II-II ′.
As shown in FIG.
It has one locking recess 10c. The locking body 11 has a pipe 11b into which an insertion rod 10b is inserted, and a pipe body 11b inserted through a through-hole of a paper bundle punched by a punch or the like into a joining plate 11a with a cover mount, and the above-mentioned hinge 11c. The locking member 11 has a locking piece 11d that locks with the locking recess 10c.

FIG. 6 shows still another example. In this example, the base 13 and the piece 14 are formed by forming a slit 13 as a U-shaped hole portion by punching a sheet-shaped product. . The paper to be bound can be sandwiched between the base portion 14 and the piece portion 15 to form a continuously bound paper bundle.

EXAMPLE 1 The locking piece 2b, the holding plate 2 and the cover 3 of the binding device shown in FIGS. 1 and 2 are injection-molded with Hyperlite 8150 (manufactured by Kanegabuchi Chemical Industry Co., Ltd.) which is polyethylene terephthalate. 1 and 2 by injection molding the binding band 1 of the binding device shown in FIGS. 1 and 2 with Sumikasen G804 (manufactured by Sumitomo Chemical Co., Ltd.) which is a low-density polyethylene.
Sample was obtained.

Example 2 The binding tool shown in FIG. 3 was replaced with Hyperlight 8150, which is polyethylene terephthalate (manufactured by Kanegabuchi Chemical Industry Co., Ltd.).
The sample of Example 2 was obtained by injection molding.

Example 3 A sample of Example 3 was obtained by injection-molding the binding tool and the cover shown in FIGS. 4 and 5 using Hyperlight 8150, a polyethylene terephthalate (manufactured by Kaneka Chemical Co., Ltd.).

Example 4 The binding tool shown in FIG. 6 was replaced with Hyperlight 8150, which is polyethylene terephthalate (manufactured by Kanegabuchi Chemical Industry Co., Ltd.).
The sample of Example 4 was obtained by injection molding.

Embodiment 5 The locking piece 2b, the holding plate 2 and the cover 3 of the binding device shown in FIGS. 1 and 2 are formed by using Hauser S made of polybutylene terephthalate.
1 and 2, and the stopper 1 of the binding device shown in FIGS. 1 and 2 is injection-molded with Sumikasen G804, a low-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd.). As a result, a sample of Example 5 was obtained.

Example 6 A sample of Example 6 was obtained by injection-molding the binding device shown in FIG. 3 with Hauser S1000 (manufactured by Kuraray Co., Ltd.) which is polybutylene terephthalate.

Example 7 A sample of Example 7 was obtained by injection-molding the binding tool and the cover shown in FIGS. 4 and 5 using Hauser S1000 (manufactured by Kuraray Co., Ltd.) which is polybutylene terephthalate.

Example 8 A sample of Example 8 was obtained by injection-molding the binding tool shown in FIG. 6 with Hauser S1000 (manufactured by Kuraray Co., Ltd.) which is polybutylene terephthalate.

Example 9 The locking piece 2b, the holding plate 2 and the cover 3 of the binding device shown in FIGS. 1 and 2 are made of Thermomix CG907 made of poly-1,4-cyclohexane dimethylene terephthalate (Toray Industries, Inc.).
1 and 2, and the stopper band 1 of the binding device shown in FIGS. 1 and 2 is injection-molded with Sumikasen G804 (manufactured by Sumitomo Chemical Co., Ltd.) which is a low-density polyethylene. A sample was obtained.

Example 10 The binding device shown in FIG. 3 was replaced with Thermomix CG90 which is poly-1,4-cyclohexane dimethylene terephthalate.
Example 1 by injection molding using No. 7 (manufactured by Toray Industries, Inc.)
0 samples were obtained.

Example 11 A thermos containing poly-1,4-cyclohexane dimethylene terephthalate as the binding device and the cover shown in FIGS.
The sample of Example 11 was obtained by injection molding with CG907 (manufactured by Toray Industries, Inc.).

Example 12 The binding device shown in FIG. 6 was used in a thermomix CG90 made of poly-1,4-cyclohexane dimethylene terephthalate.
7 (manufactured by Toray Industries, Inc.) to obtain a sample of Example 12.

Example 13 The binding piece 2b, the holding plate 2 and the cover 3 of the binding device shown in FIGS. 1 and 2 are made of a copolymer of polyethylene terephthalate and poly-1,4-cyclohexane dimethylene terephthalate. 1 and 2 by injection molding (manufactured by Toray Industries, Inc.).
Was subjected to injection molding with Sumikasen G804 (manufactured by Sumitomo Chemical Co., Ltd.), which is a low-density polyethylene, to obtain a sample of Example 13.

Example 14 The binding tool shown in FIG. 3 was used for the purpose of Easter DN003 (Toray Industries, Inc.) which was a copolymer of polyethylene terephthalate and poly-1,4-cyclohexane dimethylene terephthalate.
The sample of Example 14 was obtained by injection molding.

Example 15 The binding tool and the cover shown in FIGS. 4 and 5 were injection-molded with Easter DN003 (manufactured by Toray Industries, Inc.), which is a copolymer of polyethylene terephthalate and poly-1,4-cyclohexane dimethylene terephthalate. As a result, a sample of Example 15 was obtained.

Example 16 The binding tool shown in FIG. 6 was replaced with Easter DN003 (Toray Industries, Inc.) which was a copolymer of polyethylene terephthalate and poly-1,4-cyclohexane dimethylene terephthalate.
The sample of Example 16 was obtained by injection molding.

COMPARATIVE EXAMPLE 1 The locking piece 2b and the holding plate 2 of the binding device shown in FIGS. 1 and 2 were injection-molded with polystyrene, Denkastyrol GP GP-1 (manufactured by Denki Kagaku Kogyo KK). Further, a sample of Comparative Example 1 was obtained by injection molding the stopper band 1 of the binding device shown in FIG. 1 with Sumikasen G804 (manufactured by Sumitomo Chemical Co., Ltd.) which is a low-density polyethylene.

Comparative Example 2 A sample of Comparative Example 2 was obtained by injection-molding the binding tool shown in FIG. 3 with Nisseki Polypro J160F (manufactured by Nippon Petrochemical Co., Ltd.) which is polypropylene.

Comparative Example 3 A sample of Comparative Example 3 was obtained by injection-molding the binding device shown in FIGS. 4 and 5 with denkastyrol GP GP-1 (manufactured by Denki Kagaku Kogyo KK), which is polystyrene.

Comparative Example 4 A sample of Comparative Example 4 was obtained by injection-molding the binding device shown in FIG. 6 with Nisseki Polypro J160F (manufactured by Nippon Petrochemical Co., Ltd.) which is polypropylene.

Test method Paper bundle binding force test 1 Recycled PPC paper (manufactured by Fuji Xerox Co., Ltd.)
00 sheets were bundled, and two holes having a diameter of 5.4 mm were formed at intervals of 80 mm. Each sample was obtained by binding with each binding tool through this hole. 1 sample paper
Each of the 00 sheets was horizontally pulled right and left, and the pulling force when the binding tool was released was defined as the paper bundle binding force. The results are shown in Tables 1 to 9.

Paper bundle binding force test 2 5 recycled PPC paper (manufactured by Fuji Xerox Co., Ltd.)
0 sheets are bundled, and this is held and fixed with a binding tool. The paper was pulled in the vertical direction of the paper holding direction, and the pulling force when the binding device was released was defined as the paper bundle binding force. The results are shown in Tables 1 to 9.

[0036]

[Table 1]

[0037]

The paper bundle binding device of the present invention has a high adhesive force between the paper and the binding device, and the paper bundle is hardly detached.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment.

FIG. 2 is a sectional view taken along line I-I ′ of FIG.

FIG. 3 is a sectional view showing another embodiment.

FIG. 4 is a plan view showing still another example.

5 is a sectional view taken along line II-II 'of FIG.

FIG. 6 is a plan view showing still another example.

[Explanation of symbols]

 P paper 1 Stop band 2 Holding plate 2a Through hole 2b Locking piece 3 Cover 4 Binding hole 5 Binding pin 5a Flange 5b Male screw-shaped portion 6 Ring body 7 Projection 8 Middle hole 9 Stop pin 9a Flange 10 Clamping body 10a Stop plate 10b Insertion rod 10c Locking recess 11 Locking body 11a Joining plate 11b Pipe body 11c Hinge 11d Fastening piece 12 Slit 13 Base 13 One piece

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C08L 101/06 C08L 101/06

Claims (1)

[Claims] (1) at least in a polymer repeating unit,
A paper bundle binding device comprising a synthetic resin having a structural portion in which a carbon portion of a carbonyl group and an aromatic ring are directly bonded.