JPH07213970A - Applicator for surface protection layer of card - Google Patents

Abstract

PURPOSE:To form a protective layer uniformly and to apply the surface protection layer to make a card having breakage resistance, water resistance, and chemical resistance by installing an injector for application liquid and a dropping member comprising a porous body at the end of the injector. CONSTITUTION:A small-sized card 11 as a material to be coated with a protective layer is arranged to be able to move at constant speed in the arrow direction indicated on the right in a drawing on a transfer passage, for example, by rollers 21, 22 and a back roll 25 as transfer means. A dropping member 110 which is attached to the main body 101 of an injector 100 by a fixing plate 103 through the card 11 is installed right above the back roll 25 to be able to contact the card 11. An application liquid tank 150 is connected with the supply passage 102 of the injector 100 through an electromagnetic valve 120. In this way, a bead which has been formed so far in the rear end part of the card 11 is transferred at once to form a thick membrane so that a phenomenon in which the thickness of the protective layer membrane becomes non-uniform is completely eliminated by the present apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device for uniformly applying a surface protective layer on the surface of a small card such as a license ID card.

[0002]

2. Description of the Related Art In recent years, the development of cards and the expansion of their use have been extremely remarkable, but in particular, ID cards and various cards related to identification such as licenses are also increasing.

Naturally, these have problems in preventing forgery and protection against scratches and the like due to handling, and countermeasures against them are important. Such cards often use special photographic prints, and in the past, the method of lamination was generally used. This method is a good method including surface protection, but air bubbles are mixed in during lamination. However, there is a problem that after lamination, it takes time and labor such as punching for finishing and cost is increased. On the other hand, the method of directly applying the resin may be excellent in terms of cost, and for example, there is a method of using a coating roll as disclosed in JP-A-2-268864.

[0004]

However, since the bead coating is used in the conventional method using the metal coating roll 51 as shown in FIG. 10 showing the formation of the protective layer, the bead 12 is formed at the rear end of the card 11. Are transferred all at once, a so-called trailing edge thick film is formed, uneven nonuniformity occurs in the protective layer 115, and the coating liquid is often exposed on the apparatus by a pickup roll, a coating roll, etc., which is easy to handle. There's a problem.

Due to the characteristics of the card, there is a demand for a card having a surface protective layer which is excellent in scratch resistance, water resistance, chemical resistance and surface smoothness.

According to the present invention, a coating method which solves the above problems and can form a protective layer uniformly and is easy to handle is provided.
It is an object of the present invention to provide a coating apparatus for coating a surface protective layer for forming a card having scratch resistance, water resistance and chemical resistance.

[0007]

This object is achieved by any one of the following technical means a, b, c, d, e, f and g.

(A) In a coating apparatus for forming a hard coat as a card surface protective layer on the surface of a card, a coating liquid injector and a drooping member made of a porous body are provided at the tip of the injector. Characteristic card surface protective layer coating device.

(B) In a coating apparatus for forming a hard coat as a card surface protection layer on the surface of a card, it has a liquid injector for the coating liquid and a drooping member made of a fibrous material at the tip of the liquid injector. An apparatus for coating a card surface protective layer, characterized by:

(C) In a coating device for forming a hard coat as a card surface protective layer on the surface of a card, the coating liquid has a liquid injector and a drooping member made of a fibrous fabric at the tip of the liquid injector. An apparatus for coating a card surface protective layer, characterized by:

(D) A card according to any one of items a, b and c, wherein a bar is provided in the hanging member and the bar is moved up and down together with the hanging member during application. Surface protective layer coating device.

(E) A coating device for forming a hard coat as a card surface protective layer on the surface of a card by a roll coating method, wherein a porous body is formed on the surface of the coating roll.

(F) In a coating device for forming a hard coat as a card surface protective layer on the surface of a card by a roll coating method, a fibrous material is mounted on the surface of the coating roll to coat a card surface protective layer.

(G) In a coating device for forming a hard coat as a card surface protective layer on a card surface by a roll coating method, a card surface protective layer coating device, wherein a fibrous woven fabric is mounted on the roll surface.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described together with its operation with reference to the drawings. Embodiments of claims 1 to 3 are schematic configuration diagrams of FIG.
2 (a) and 2 (b), a partial sectional view of the liquid injector and the hanging member, FIG.
This will be described with reference to partial cross-sectional views showing the behavior of applying the protective layer.

The small card 11, which is the object to be coated with the protective layer, can be moved at a constant speed in the direction of the arrow to the right by means of, for example, the roller rollers 21 and 22 and the back roll 25 as the conveying means.

Further, directly above the back roll 25, a hanging member 110 attached to the main body 101 of the liquid injector 100 by a fixing plate 103 via the small card 11 is provided so as to be in contact with the small card 11. .

A solenoid valve is provided in the supply passage 102 of the liquid injector 100.
The coating liquid tank 150 is connected via 120.

A small card 1 is provided on the downstream side of the liquid injector 100.
The front and rear end detection sensors 130 of 1 are provided, and the sensors 13
With the card leading edge detection signal of 0, the solenoid valve 120 is opened for an appropriate time by a timer so that the required amount of the coating liquid is continuously supplied from the coating liquid tank 150 to the supply passage 102 of the liquid injector 100.

When the rear end of the small card 11 is detected, the solenoid valve 120 is closed after an appropriate time set by the timer, and the supply of the coating liquid from the coating liquid tank 150 is cut off. is there.

Further, the rear end of the small card 11 has a hanging member 110.
The contact with the drooping member 110 is released at a position immediately below. Then, at the time of separation, since the bead 12 absorbs a portion of the coating liquid that is heavier than the preceding protective layer 15 due to the liquid absorbing function of the material of the hanging member 110, it is possible to perform thick film development on the rear end of a small card that has been conventionally used. Smooth coating can be realized without being seen.

The supply of the coating liquid by the electromagnetic valve 120 is stopped by the detection signal of the rear end or the front end and the set value of the timer before the rear end of the small card reaches just below the hanging member, and the thick film at the rear end of the card is stopped. It is designed to enhance the absorption capacity of the beads that cause the formation of

The liquid can be supplied from the coating liquid tank 150 to the liquid injector 100 by a liquid feed pump instead of the method using an electromagnetic valve.

It should be noted that the hanging member 110 is formed in a bag shape, and the one shown in FIG. 2 (a) is one in which the end portions of the bag shape are overlapped and fixed by the fixing member 103 to the main body 101 of the liquid injector 100. In addition, the inlet portion of the bag-shaped hanging member 110 is divided into two and one end is fixed to the fixing member 1.
In FIG. 2B, the other end is fixed by the fixing member 104 at 03.

A sponge material is suitable for the material of the porous body of the hanging member used in the first embodiment.

Felt, non-woven fabric and cotton are suitable for the fibrous material of the hanging member used in the embodiment of claim 2.

Moquette, plush velour, seal, velvet called velvet, and woven fabric are suitable for the fibrous fabric of the hanging member used in the third embodiment.

Next, an embodiment of claim 4 will be described with reference to FIGS.
Will be described with reference to the partial sectional views of FIG.

This is provided with a bar 120 in the hanging member 110,
The bar 120 is moved up and down in accordance with the card transportation and the hanging member 110
The card 11 and the card 11 are brought into contact with each other and separated from each other to further securely prevent the liquid from adhering to the transport path.

That is, before the small card 11 as shown in FIG. 4 enters the position of the hanging member 110 and after passing as shown in FIG. 6, the bar 120 of the hanging member 110 moves upward. Therefore, it is separated from the transport path so that the transport path is not polluted. Further, as shown in FIG. 5, when the hanging member 110 is on the card 11, the bar 120 descends,
The hanging member 110 is pressed against the surface of the card 11 by the weight of the bar 120.

The bar 120 also plays the role of a ridge, and the hanging member 110 can be pressed uniformly against the undulations and surface irregularities of the card 11, so that a more uniform surface application can be performed. Will be seen.

Although a metal rod can be used as the bar, it is preferable to use a fibrous material such as mesh or felt so as not to impede liquid permeation in the hanging member.

The coating layer applied to the surface of the card by the apparatus of the present invention is cured in the treatment section of the subsequent step,
A card surface protection layer is formed.

With the apparatus of the present invention thus manufactured, an epoxy ultraviolet curing resin is used as a coating liquid, and a thickness of 500 is obtained.
A small card 11 made of PET having a thickness of μm was coated with a target film thickness of 10 μm to form a uniform card surface protective layer without a thick film at the trailing edge.

When the same resin as described above was applied to a small card 11 similar to the above with a target film thickness of 15 μm by a gravure roll type coating roller, an increased film thickness of 30 μm was generated at the rear end of the card, and that portion Had a film thickness of 45 μm.

Next, the embodiments of claims 5, 6 and 7 will be described with reference to the schematic configuration diagram of FIG. 7, the sectional view of the coating roll of FIG. 8 and the schematic configuration diagram of the coating roll with an inking roll interposed in FIG. Explain.

The small card 11, which is the object to be coated with the protective layer, can be moved at a constant speed in the direction of the arrow to the right by means of, for example, roller rollers 21 and 22 and a back roll 25 as a conveying means.

An application roll 200 is provided directly above the back roll 25 via the small card 11.

The coating roll 200 is piped from the coating liquid tank 150 through the solenoid valve 120 to a pipe hole 205 provided concentrically and centrally to the coating roll 200, and the surface of the sponge material or the like of the coating roll 200 is fed by the liquid feed port 201. The material 210 is made to permeate an appropriate amount.

The liquid can be supplied from the coating liquid tank 150 to the coating roll 200 by a liquid feed pump instead of the method using an electromagnetic valve.

Further, in another embodiment, a sponge or the like on the surface of the coating roll is passed from the coating liquid tank 150 through the inking roll 131 as shown in FIG. The coating liquid is supplied to the surface material.

In such a coating apparatus, the coating roll 200 or 250 of the surface material containing the coating liquid and the back roll 22 are used.
While the card 11 is nipped between the card 11 and the card 5, the coating liquid is transferred, and the coating layer is cured in the processing section of the subsequent step to form a card surface protective layer.

The liquid is supplied to the coating roll 200 or 250 by opening the electromagnetic valve 120 for a certain period only when the card 11 is detected by the sensor 130 so that the amount of liquid held by the coating roll 200 or 250 is always constant. You can In the apparatus of the present invention, the bead, which caused the thick film at the back end of the card generated when the coating roll was made of metal, has a surface material such as a nipped sponge that passes past the back end of the card. When this is done, it is absorbed by being restored from the nip state, and there is no possibility of producing a thick film.

If the thickness of the card is thin and the backside of the coating liquid is likely to occur at the top of the card, use the sensor 13
It is detected by 0, the start of coating is accurately detected through a timer, and the coating roll 200 or 250 is moved up or down, or a small card is moved up or down so that the head of the card 11 and the coating roll 20
By attaching or detaching 0 or 250 contacts, the backing can be prevented.

In the fifth embodiment, the surface material of the coating roll 200 or 250 is a porous body, preferably a sponge. The surface material is a fibrous material such as felt, non-woven fabric or cotton in the embodiment of claim 6, and the surface material is fiber such as moquette, plush velour, seal, velvet called velvet, woven fabric and the like. It is an embodiment of claim 7 that a woven fabric is used.

A small PET card having a thickness of 500 .mu.m is formed in the same manner as in the first to fourth embodiments by using an epoxy ultraviolet curing resin as a coating liquid using the apparatus of the fifth, sixth and seventh embodiments. When a target film thickness of 10 μm was applied to the film, a uniform surface protective layer without a trailing edge thick film or backing was formed.

When a target film thickness of 15 μm was applied using a conventional gravure roll type application roller using the same application liquid, 3
An increased film thickness of 0 μm occurred, and the film thickness at that portion reached 45 μm.

[0048]

The bead formed between the conventional metal coating roll and the rear end of the small card, which is the object to be coated, is transferred all at once to form a thick film, and the thickness of the protective layer is not uniform. The phenomenon described above is completely eliminated by the coating apparatus of the present invention, and uniform coating can be performed without forming a thick film at the trailing edge.

Further, particularly in a coating device using a coating roll made of metal, the coating liquid is widely exposed at the pick-up roll and the coating roll, and there are many opportunities to come into contact with such coating liquid during operation, which is a problem in handling. However, the coating device using a drooping member in the liquid injector of the present invention, and the coating device that directly supplies the required amount of the coating liquid from the coating liquid tank to the coating roller having a liquid-absorbent surface material are within the range where the operator touches the coating liquid. Since it is much smaller, it is hard to touch the coating liquid and handling is very easy.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a liquid injector and a hanging member.

FIG. 3 is a partial cross-sectional view showing a behavior of coating a protective layer.

FIG. 4 is a partial cross-sectional view of a state where a bar is added to the hanging member and the pre-application bar is raised.

FIG. 5 is a partial cross-sectional view of a state in which a bar is added to the hanging member and the bar is lowered during coating.

FIG. 6 is a partial cross-sectional view of a state where a bar is added to the hanging member and the bar is raised after coating.

FIG. 7 is a schematic configuration diagram of another embodiment of the present invention.

FIG. 8 is a sectional view of a coating roll according to another embodiment of the present invention.

FIG. 9 is a schematic configuration diagram of another embodiment of the present invention.

FIG. 10 is a diagram showing formation of a protective layer formed between a conventional metal coating roll and a card as a material to be coated.

[Explanation of symbols]

 11 Application object (small card) 12 Bead 15 Protective layer 21, 22 Roller roller 25 Back roll 100 Injector 101 Injector body 102 Supply path 103, 104 Fixing member 110 Hanging member 120 Solenoid valve 130 Sensor 131 Inking roll 150 Coating liquid tank 200, 250 Coating roll 201 Liquid feed port 205 Pipe hole 210 Coating roll surface material 225 Back roll

Claims (7)

[Claims] 1. A coating apparatus for forming a hard coat as a card surface protective layer on the surface of a card, comprising a liquid injector for coating liquid and a drooping member made of a porous body at the tip of the liquid injector. Card surface protective layer coating device. 2. A coating device for forming a hard coat as a card surface protective layer on the surface of a card, comprising a liquid injector for coating liquid and a drooping member made of a fibrous material at the tip of the liquid injector. Characteristic card surface protective layer coating device. 3. A coating device for forming a hard coat as a card surface protective layer on the surface of a card, comprising: a pouring device for the coating liquid; and a drooping member made of a fibrous fabric at the tip of the pouring device. Characteristic card surface protective layer coating device. 4. The card surface protection according to claim 1, wherein a bar is provided in the hanging member, and the bar is moved up and down together with the hanging member during application. Layer coating device. 5. A card surface protective layer coating device, wherein a porous body is formed on the surface of the coating roll in a coating device for forming a hard coat as a card surface protective layer on the card surface by a roll coating method. 6. A coating device for forming a hard coat as a card surface protective layer on the surface of a card by a roll coating method, wherein a fibrous material is mounted on the surface of the coating roll. 7. A card surface protective layer coating device, wherein a fibrous woven fabric is mounted on the roll surface in a coating device for forming a hard coat as a card surface protective layer on the card surface by a roll coating method.