JPH044199A - Index tab - Google Patents

Abstract

PURPOSE:To prevent an index tab from reducing in adhesion strength at room temperature or low temperature, generating a low-temperature brittle in a cold area, and deteriorating in tone and beauty in appearance by a method wherein a copolymer polyester resin is applied on one surface of a film substrate of a polyethylene terephthalate and contact bonded on paper, film, or the like at a specific adhesion temp., and the copolymer polyester resin added with a dye or pigment may be applied on one surface of the film substrate for the purpose of coloring. CONSTITUTION:On one surface of a thin film substrate 3 of a polyethylene therephthalate resin, a copolymer polyester resin dissolved in a solvent or melted is applied to form a copolymer polyester resin layer 4. When a tab is to be colored, the copolymer polyester resin in added with a dye or pigment when being dissolved in solvent, thereafterbeing applied. The film substrate 3 is folded with paper between and thermally contact bonded at a temperature of 50 - 200 deg.C. Thus, the tab can be attached to the paper 1.

Description

[Detailed description of the invention] [Industrial application field] The present invention c) loose leaf, system note, file,
Sort and organize paper leaves and bags inserted into stationery such as notebooks and diaries, telephone directories, business card holders, photo books, albums, organizer books for cards and postcards, and synthetic resin films and bags. , relating to indexes and tabs attached for reinforcement of landmarks.

[Conventional technology]

Conventional indexes and tabs of this kind are made by attaching a polyethylene terephthalate resin film to paper or film using an ethylene-vinyl acetate copolymer resin real-melt adhesive, and by printing directly onto the polyethylene terephthalate resin film. I was doing coloring.

[Problem to be solved by the invention]

However, when such an ethylene-butyric acid beer copolymer resin hot melt adhesive is used, the adhesive strength with paper or vinyl chloride resin sheets at room temperature is insufficient, and it cannot be used, for example, in cold regions below -10°C. If this happens, problems such as embrittlement and low-temperature adhesive strength may occur, and uneven adhesion becomes noticeable, yellowish and not transparent, and the color tone and aesthetics are impaired when used as headings for stationery, etc., and when used for files and notebooks. The quality of the adhesive deteriorates over time,
It was exhibiting such problems.

In addition, since printing is done and colored, it is necessary to use a large amount of organic solvent for cleaning each time the color is changed due to the large variety of small quantities, and it is difficult to recover and dispose of the solvent, resulting in environmental and hygienic issues. , was exhibiting a problem.

[Means to solve the problem]

The present invention solves such problems and further improves quality. Therefore, the copolyester resin is dissolved in a solvent or melted and applied to one side of a film base material such as polyethylene terephthalate resin. It is formed by pressure bonding to paper, film, etc. at an adhesion temperature of 50 to 200°C, and one side of the film base material is colored by adding a dye or pigment to the copolymerized polyester resin.

[Effect]

Therefore, it solves the problems of conventional methods such as reduced adhesive strength of indexes and tabs at room and low temperatures, low-temperature embrittlement in cold regions, flexibility, and poor appearance and color unevenness. This means that it can be done.

〔Example〕

Next, examples of the present invention will be described.

In the figure, (1) is paper with a group of holes (2) for binding binder on the - side, (3) is a thin film base material of polyethylene terephthalate resin that can be folded in half, and (4)
) indicates a copolymerized polyester resin layer.

In addition, since the temperature at which the film base material (3) is bonded to the paper (1) is 50 to 200°C, the dicarbonate raw material is Although it is necessary to select the type and composition of acids and diols, dicarboxylic acids often used for boat fishing include terephthalic acid, isophthalic acid, cepatic acid, adipic acid, and dodecanoic acid; These include ethylene glycol, butanediol, tetramethylene glycol, furopanediol, neopentyl glycol, and trimethylolpropane.

Therefore, if the copolyester resin is dissolved in a solvent or melted and applied to one side of the thin film base material (3), and if the copolyester resin is to be colored, dyes or pigments may be added when the copolyester resin is dissolved in the solvent. In addition, the film base material (3) is folded and sandwiched between paper (1),
Thermocompression bonding at a temperature of 50 to 200° C. makes it possible to attach tabs to the paper (1).

The index and tabs include laminate tabs, insert tabs, line forcers, etc. In the case of laminate tabs, the length is 20 to 100 m and the width is 40 m.
Fold the film base material into two in the length direction, and the adhesive surface will be 20 m? ? 'L' between paper and 80-15
I had to heat and press the paper on both sides at a temperature of 0℃.
For insert tabs, fold a 40mm wide film base in half and place 5-10mm of the film base on both sides of the paper.
? A section of approximately 7LrrL is bonded with heat and pressure so that a piece of paper for a headline can be inserted into a gap of 15 to 10 meters in width that is not bonded to the paper.Furthermore, in the case of a line forcer, for example, a punch When binding 2 to 26 holes in paper and binding it in a binder, the holes tend to tear, but in order to prevent this tearing, the paper can be reinforced by adhering a film base material.

Further, the results of an experiment to compare the present invention and a conventional example are shown below.

In Examples 1.2 and 3 of the present invention, different mixtures containing copolymerized polyester resin as the main component were dissolved in 200 parts by weight of toluene-methyl ethyl ketone so that the coating thickness after drying was 15.7j7y+. , coated on a polyethylene terephthalate resin film with a thickness of 50 mm using a roll coater, dried, and coated with 2 coats of this film.
Fold the paper, put it between the top and bottom hot plates of an index/tab making machine, heat seal time 0.8 seconds, heat seal pressure 3ky/c, heat seal temperature 1oo0
In the conventional example, the adhesive was bonded using an ethylene-vinyl acid copolymer resin pot-melt adhesive.

That is, in each experimental example of the present invention, the heat seal strength between the film base material and paper was significantly improved compared to the conventional example,
The strength of heat sealing with the PVC sheet was nearly three times that of the conventional example, and better results than the conventional example were obtained in terms of external transparency and color unevenness.

〔Effect of the invention〕

In this way, the present invention provides that the copolyester resin used as an adhesive has good dimensional stability when the temperature rises, and the embrittlement temperature at low temperatures is lower than that of conventional ethylene-vinyl acetate copolymer resins. The adhesive layer is flexible and has good surface properties, is transparent, has a good texture, and is highly flexible and can create a strong ruptured membrane, which prevents the index from bending or breaking. It is suitable as a tab, and it also has excellent weather resistance and oil resistance, and has no uneven color and excellent appearance.The adhesive does not change over time, so it can be used as an index for files and notebooks that can be stored for a long time. , it will have stable quality as a tab.

In addition, since the index can be colored in addition to the copolymerized polyester resin, the manufacturing process can be simplified, pollution and hygiene problems can be solved, and the index has excellent strength and good color tone.

It has the feature that it can be made into a tab and can be suitably implemented.
In addition, although the indexes and tabs are described in the examples, they can be used for a wide variety of other office supplies, notebooks, paper products, cloth products, decorative materials used in architecture, etc.

[Brief explanation of drawings]

FIG. 1 is a front view of a loose leaf according to an embodiment of the present invention;
Figure 2 is a perspective view of the film base material, Figure 3 is the ■- of Figure 1.
2 shows a cross-sectional view along the line. (1)...Paper, (3)...Film base material Figure 1 Figure 2 Applicant: Takahashi
People Modern Plastic Industry Co., Ltd.”$3 (2)

Claims (1)

[Scope of Claims] 1. Copolymerized polyester resin is dissolved in a solvent or melted and applied to one side of a film base material such as polyethylene terephthalate resin, and is then pressure-bonded to paper, film, etc. at an adhesive temperature of 50 to 200°C. Index. tab. 2. The index according to claim 1, wherein one side of the film base material is colored by adding a dye or a pigment to the copolyester resin. tab.