JPH06222536A - Method and device for coating of surface protective layer of card - Google Patents

Abstract

PURPOSE:To provide a coating device to uniformly form a surface protective layer of a driver's license card or the like. CONSTITUTION:In a coating device 100, a UV-curing resin is applied to form a hard coating film by making a coating member consisting of fibrous cloth with the UV-curing resin on a thermal-transfer-type card material 11 ooze it. In this device, the coating member 107 consists of velvet and is attached to a holder in the following procedure. The coating member 107 is mounted along the inner wall of a tool having the inner shape similar to the outer shape of the holder but larger in dimension by the thickness of the coating member 107 than the outer shape of the holder. A clip 128 of the holder is raised to cover the holder with the mounting tool, the coating member 107 is pressed by the clip 128, and then the tool is disengaged. Thus, the coating member 107 is attached to the holder by the spring of the clip 128 which acts to stretch the coating member 107 on the holder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method and apparatus 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 have been 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 in that it is easy, and after laminating, it takes time and labor such as punching and the cost is increased. On the other hand, the method of directly applying the resin may be excellent in cost, for example, Japanese Patent Application No. 64-90261.
No. 64-90266 and the like, there is a method of using a coating roll.

[0004]

However, since bead coating is used in such a method, the beads are transferred to the rear end portion of the card all at once, so that a so-called rear end film thickness is formed and uneven unevenness is formed in the protective layer. In addition, there are many places where the coating liquid is exposed in the device, and there is a problem in handleability.

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.

[0006] It is necessary to apply a surface protective layer to solve the above problems and to form a card having scratch resistance, water resistance and chemical resistance by applying the protective layer uniformly and with excellent handling. .

However, when a fibrous material such as felt, non-woven fabric, cotton or the like is used as the coating member, irregular coating unevenness occurs on the coating surface because the fibers are nonuniformly present. Also,
When the cloth-shaped coating member was replaced, the coating member was wet with the coating liquid, and the surroundings were sometimes soiled.

An object of the present invention is to provide a method and apparatus for coating a card surface protective layer which solves the above problems.

[0009]

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

(A) A thermal transfer type card-shaped object such as a license or ID card is coated with UV from a coating member made of a fibrous fabric.
A method for applying a card surface protective layer, characterized in that the resin is exuded and applied to form a hard coat as a card surface protective layer, wherein the application member is velvet.

(B) A coating device for forming a hard coat as a card surface protective layer by exuding UV resin from a coating member made of a fibrous fabric and coating it on a thermal transfer type card-shaped object such as a license or ID card. In which the application member is a velvet, and the application member is attached to the holder along the outer surface shape of the holder, and along the inner surface of the jig whose inner surface shape is increased by at least the thickness of the application member. Place the application member on the holder, lift the clip of the holder, cover the holder with the jig, press the application member with the clip, remove the jig, and clip the clip on the holder. An apparatus for applying a card surface protective layer, characterized in that the applying member is mounted on the holder by the action of extending the applying member by the spring.

(C) A coating device for forming a hard coat as a card surface protective layer by bleeding UV resin through a coating member made of a fibrous woven material onto a thermal transfer type card-shaped object to be coated such as a license or ID card. In the above, the application member is used as a velvet, and the application member is attached to a holder by winding a long belt as the application member from the unwinding portion to the holder along the outer surface shape of the application position of the holder. When the coating member is deteriorated, a fixed amount is fed from the unwinding portion by a feeding roller to replace the deteriorated coating member on the coating member of the new portion and the deteriorated coating is performed. An apparatus for applying a card surface protective layer, characterized in that the member portion is wound up by a winding portion.

(D) A coating device for forming a hard coat as a card surface protective layer by exuding UV resin from a coating member made of a fibrous woven material and coating it on a thermal transfer type card-shaped object such as a license or ID card. In the above, the application member is an endless belt-like velvet, and the application member is mounted on a holder by winding along the outer surface shape of the holder and a guide roller, and the deterioration of the application member in the application portion progresses. A card surface protection, characterized in that an endless belt-shaped coating member is moved in a certain direction in one direction so that a new portion of the coating member is mounted at the coating position of the holder instead of the deteriorated coating member. Layer coating equipment.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overall construction of an embodiment of the coating apparatus of the present invention will be outlined with reference to the front view of FIG.

The card-shaped object to be coated 11 is a drive wheel 21,
The belt or chain 25 of the conveying device 20 including the endless belt or chain 25 wound around the driven wheel 22.
The card-like objects 11 to be coated are supplied and set one by one from the card feeder 10 at the feeding position on the pallet or the stage 26 connected to each other and conveyed to the coating position. The card-shaped object 11 to be coated can be fixed to the stage 26 by suction, friction, adhesion, static electricity, claw-shaped projections, or the like. At the coating position,
The coating unit 100 including the coating liquid tank 101 and the coating unit 110 having the coating member 107 is on standby.

The pallet or stage 26 entering the coating position is held on both sides by fixed guide rails 27 and is slidable on the guide rails 27, so that the height and width directions are accurately held. . At the coating position, the coating section 110 of the coating means 100 is slightly pushed up, and the coating section 110
The coating member 107 on the lower surface of the pallet or the card-shaped object 11 to be coated on the pallet or stage 26 is contacted with a uniform pressure in the width direction to supply the required amount of the coating liquid 102 from the coating liquid tank 101 to the coating member 107. The exuded coating solution 102 is applied onto the moving pallet or the card-shaped object 11 on the stage 26 by uniform transfer of the coating solution. Then, when the rear end of the card-shaped article to be coated 11 comes, the coating section 110 disconnects from the coating liquid tank 101, and coating is completed.

In the application section, the card-shaped object to be coated 11 is applied section 110
When it reaches the bottom, it descends to the beginning of the card-shaped object 11 to contact with the card-shaped object 11 and rises from the rear end of the card-shaped object 11 at the end of application and moves away from the card-shaped object 11. Thereby, it is possible to prevent the pallet or stage such as a pallet or stage that is carrying the card-shaped object to be coated 11 from being attached with the liquid and the back surface of the coating liquid on the back surface of the card-shaped object to be coated.

In addition to the method of moving the coating section up and down, the vertical mechanism for bringing the coating section and the card-shaped article 11 into contact includes a pallet or stage 26 of a conveyor carrying the card-shaped article 11 together with the card. It may be moved up and down.

As described above, the card-shaped object to be coated 11 does not necessarily have to be placed on the pallet or the stage 26 and may be directly conveyed on the conveyor.
In this case, the up-and-down mechanism for contacting the coating unit 110 and the card-shaped object to be coated 11 is performed by pushing up or down the belt surface of the conveyor.

The raising / lowering mechanism for contacting the coating portion with the card-shaped object may be arranged to raise / lower the coating portion in addition to the method for raising / lowering the belt surface of the conveyor.

When the coating section 110 is moved up and down, the coating section 110
It is also possible to separate the coating liquid reservoir 101 and the coating liquid reservoir 101 and move only the coating unit 110 up and down. At this time, it is preferable that the coating part and the coating liquid reservoir are connected by a liquid feeding tube, and the coating part 110 and the coating liquid reservoir (coating liquid tank) 101 can be easily replaced by a cartridge type. In addition, coating liquid reservoir (coating liquid tank) 101
In the case of providing a valve between the coating section 110 and the coating section 110, by pressing the liquid feeding tube to shut it off or return it to the original state, the parts for cartridge replacement can be miniaturized.

When the coating liquid reservoir (coating liquid tank) 101 is hermetically sealed, the internal pressure may change due to environmental temperature changes, etc., and the liquid supply to the coating unit 110 may not be constant, so stable coating may not be possible. The liquid reservoir (coating liquid tank) 110 is preferably open to the atmosphere.

The card-like object 11 to be coated which has been applied is carried to the next processing unit 30 for irradiating energy rays, where it is irradiated with ultraviolet rays or the like to cure and finish the object. Then, it is collected when it passes through the processing unit 30.

Next, various structures of the coating means 100 in the present invention will be described.

FIG. 2 is a side sectional view of one embodiment of the coating means 100. The coating liquid tank and the coating unit 110 are partitioned by the upper and lower partition walls 103 to form an integrated structure, and the coating member 107 made of a fibrous woven fabric such as a porous fibrous material or a woven fabric is formed on the bottom as described above. It has been overturned. And FIG.
As shown in (a), a small tapered hole 105 is formed at the center of the intermediate partition wall 103, and a piston 106 is dropped into the tapered hole 105.
It hits the inner surface of 07 and is pushed down a little. At the time of application, the piston 106 is attached to the application part 110 as shown in FIG.
The coating liquid 10 is pushed up in the direction of the arrow through the coating member 107, and the coating liquid 10 is discharged from the gap formed between the piston 106 and the tapered hole 105.
2 oozes out. When not applied, the piston 106 descends due to the weight of the piston 106, and there is no gap with the tapered hole 105, and the exudation of the liquid stops.

Further, an internal member 121 is provided inside the coating section 110, and as shown in FIG. 2B, the piston 106 is opened as described above to supply the necessary amount of coating liquid 102 for each sheet. Is temporarily absorbed by the internal member 121 to further ensure the prevention of dripping. The amount of exudation of the coating liquid can be variously adjusted depending on the taper angle of the piston and the number of pistons. The material of the inner member 121 is preferably a fibrous material such as sponge, cotton, non-woven fabric or the like, or a fibrous woven fabric such as a woven fabric.

However, the coating member 107 is used as the card-shaped article to be coated 1
When 1 is contacted and pushed up, if the application is performed while the bulge due to the projection at the lower end of the piston 106 is received, the card-shaped article to be coated 11 will receive the coating unevenness on the vertical streaks at approximately the center of the traveling direction. This is prevented by providing the bar 108 or the net integrally with the lower end of the piston 106, if possible, as shown in the side sectional view of FIG. The factors such as the vertical stripes are eliminated, and good application becomes possible.

As another means, a resistor for contacting the upper portion of the coating member 107 as shown in the side sectional view of FIG. 4 for balancing the surface tension when the coating liquid 102 oozes out. By adding 125, it is of course possible to eliminate the concern about vertical streaks and to eliminate the liquid leakage phenomenon.

The on-demand supply of the coating liquid 102 from the coating liquid tank 101 is performed by the piston 106 as described above.
However, since there is only one supply hole by the piston, if it is left as it is, a large amount of liquid will flow straight into the central portion, and thick coating in the central portion and thin coating in the peripheral portion may occur.

In order to prevent this, as shown in the side sectional view of FIG. 5A and the plan view of the partition wall 103 in FIG. 5B, the slit groove 112 is provided in the width direction from the tapered hole 105. Since the slit has a very narrow width and the liquid tends to spread to the periphery due to the capillary phenomenon, it becomes possible to achieve the uniformity of the distribution of the coating liquid in the width direction.

Similarly, in order to improve the uniformity of the coating liquid distribution in the width direction, a diffusing plate 114 as shown in the plan view of FIG. 6 (b) is provided in the coating section 110 on the side of FIG. 6 (a). It has been confirmed that it is effective by arranging it as shown in the sectional view.

Furthermore, in addition to the piston 106 for supplying the coating liquid from the coating liquid tank 101 to the coating portion 110, an electric solenoid valve may be used, or the valve may be opened and closed by a mechanical cam drive. It may be carried out by a method of supplying a fixed amount with a rotary pump.

As the coating member, a porous fibrous material or a fibrous woven fabric such as a woven fabric is used. Among the fibrous woven fabrics, moquette, plush velor, seal, velvet and suede are called. Fabrics with piles, so-called velvet, are in the most favorable situation. That is, uniform coating is possible, the coating finish is stable, and the appearance is good.

The material of the velvet, especially the material of the pile is preferably polyester, rayon or nylon. Among them, polyester and rayon provide good coating finish. The pile length is preferably 1 to 5 mm. The fiber density is 30 to 80 warp yarns per inch and 1 weft yarn per inch.
Preferably 20 to 70 lines per inch.

In this coating device, for example, an epoxy type ultraviolet curing resin was used as a coating liquid, but a PET film having a thickness of 500 μm was used.
When a target film thickness of 10 μm was applied to the card, a uniform card surface protective layer was formed without increasing the trailing edge film thickness.

However, when a resin similar to that described above was applied to a similar card with a target film thickness of 15 μm using a roll coater presented in Japanese Patent Application No. 64-90266, an increased film thickness of 30 μm appeared at the rear end of the card and that portion was observed. Had a film thickness of 45 μm.

In the present invention, it is preferable that the coating unit 110 and the coating liquid reservoir (coating liquid tank) 101 are integrated, and it is possible to exchange them in a cartridge system, and the handling of the coating liquid is further simplified. It

As described above, by using the velvet as the coating member 107, the coating can be made uniform and stable. However, velvet is also many times, for example 5000 pieces or 10,0
When applied to as many as 00 cards, the pile will fall, or the pile will decrease and become shorter, resulting in deterioration. Then you have to replace it with a new one.

The replacement must be made smooth, easy and safe. The method and apparatus will be described with reference to the front view of FIG. 1, the perspective view of the coating section of FIG. 7A and the perspective view of the jig of FIG. 7B.

In this case, the coating member 102 is made into a sheet shape cut into a sheet shape, and when the coating member 107 deteriorates, the clip 128 is pinched to release the presser and a new sheet-shaped coating is applied. First, the member 107 is fitted and mounted on the inner surface of the jig 131.

Then, the clip is picked up and the jig 131 is applied to the coating section 1
When it is inserted into the holder 110A of 10 and the clip is released,
The velvet of the new coating member 107 is pinched by the clip 128 with respect to the holder 110A, and the coating member 107 is brought into contact with the holder 110A and an appropriate tension is applied to the holder 110A so that the coating member 107 is closely fixed to the holder 110A. To be done. As a result, the attachment of the new coating member 107 is completed accurately and easily by pulling out the jig 131. Jig 1 here
The inner surface of 31 and the outer surface of the holder 110A are similar to each other with the velvet of the coating member 107 in between.

The above is an embodiment of the method and apparatus for replacing the single-leaf application member 107, but in the front view of FIG. 8, the application member 107 is wound long and set in the unwinding roll shape. When the coating member is deteriorated, the deteriorated one is moved in the winding axis direction and a new one is fed out and replaced.

That is, the long roll coating member 107 is the unwinding roll 1
The feed roller 152 is attached to the over-rotation prevention brake 152A and is pressed against the feed amount display roller 152B.
Thus, the coating member 107 is pulled out by a necessary amount when newly updated. On the other hand, the application member is a tensioner 15
3. After passing through the coating section 110, the winding shaft 155 is prevented from rotating in the reverse direction by the one-way clutch. That is, the deteriorated one is wound up and the new one is fed out from the unwinding roll 151.

The wound coating member is wet with the coating liquid and may drip, so that a liquid receiver 155A is provided below the winding shaft.

In the coating section 110, when the card of the member to be coated is applied to the coating section, the coating member 107 lifts the belt 25 of the conveyer conveyor 20 so that the card comes into contact with the coating member 107 at a suitable pressure and is stable. The application of the homogeneous surface protective layer is completed.

Further, in the perspective view of FIG. 9 and the front view of FIG. 10, the velvet of the coating member 107 is fixed to the clips 164 and 165 provided at both ends of the leader belt to form an endless belt, and the driving roller 161, Guide rollers 162, 163
Also, a state in which the coating unit 110 is wound around the holder 10A is shown. When the velvet portion is deteriorated, a knob provided on the drive roller is used to rotate the knob in one direction to replace it with a new one. The endless belt does not have a leader belt, and the coating member 10
It is also possible to configure with only 7.

[0047]

EFFECTS OF THE INVENTION According to the present invention, a fixed amount of the coating liquid required for the coating is supplied during coating, and the coating liquid exudes from the coating member and is coated on the card-shaped object to be coated. No leakage occurred, and the coating liquid spreads evenly on the card during coating, so that the protective layer on the surface of the card can be coated stably and efficiently. In particular, there is no trailing edge film thickness, and it is covered by a beautiful protective layer, and durability, water resistance, and
High quality cards with excellent chemical resistance can now be realized.

Further, when the coating member deteriorates, the means for exchanging it with a new one can be made simple, accurate and easy to operate.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of the overall configuration of an embodiment of the present invention.

FIG. 2 is a side sectional view of an embodiment of the coating means.

FIG. 3 is a partial side cross-sectional view of one example of a coating unit.

FIG. 4 is a partial side cross-sectional view of another example of the coating unit.

FIG. 5A is a side sectional view showing a slit groove of a coating section.
(B) is the top view.

FIG. 6A is a partial side cross-sectional view showing a state in which a diffusion plate is placed in the coating section. (B) is a plan view of the diffusion plate.

FIG. 7 is a perspective view of a coating unit and a mounting jig for the coating member, which shows a replaceable structure of the coating member.

FIG. 8 is a front view of a coating device in which a long-winding coating member is replaceably mounted.

FIG. 9 is a perspective view of an application unit equipped with an endless belt-shaped application member.

FIG. 10 is a front view of an application section in which an endless belt-shaped application member is mounted.

[Explanation of symbols]

 10 Card feeder 11 Card-shaped object to be coated 20 Conveyor (conveyor) 21 Drive wheel 25 Endless belt or chain 26 Pallet (stage) 27 Guide rail 30 Processing section 100 Coating means 101 Coating liquid tank (Coating liquid reservoir) 102 Coating Liquid 103 Partition 105 Taper hole 106 Piston 107 Coating member 108 Bar 110 Coating section 110A Holder 112 Slit groove 114 Diffuser 121 Internal member 125 Resistor 128 Clip 129 Spring 131 Jig 151 Unwinding roll 152 Unwinding roller 153 Tensioner 155 Winding shaft 161 Drive roller 162 Guide roller 163 Guide roller 164 Clip 165 Clip

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B42D 15/10 501 K 9111-2C J 9111-2C G03C 8/40 8910-2H 11/08

Claims (4)

[Claims] 1. A coating method for forming a hard coat as a card surface protective layer by bleeding a UV resin through a coating member made of a fibrous fabric onto a card-shaped object to be transferred such as a license or ID card to form a hard coat. A coating method for a card surface protective layer, wherein the coating member is velvet. 2. A coating device for forming a hard coat as a card surface protective layer by bleeding UV resin onto a thermal transfer type card-shaped object to be coated such as a license or ID card from a coating member made of a fibrous woven material and coating it. , The application member is a velvet, and the attachment of the application member to the holder is performed along the outer surface shape of the holder, and along the inner surface of the jig whose inner shape is at least increased by the thickness of the application member. Place the coating member, lift the clip of the holder, cover the holder with the jig, press the coating member with the clip, remove the jig, and remove the clip of the clip on the holder. A card surface protective layer coating apparatus, wherein the coating member is mounted on the holder by an action of extending the coating member by a spring. 3. A coating device for forming a hard coat as a card surface protective layer by bleeding UV resin from a coating member made of a fibrous woven material onto a card-shaped object to be transferred such as a license or ID card to form a hard coat. The application member is a velvet, and the application member is attached to a holder by winding a long belt as an application member around the holder along the outer surface shape of the application position of the holder. When the coating member is deteriorated, a fixed amount is fed from the unwinding portion by the feeding roller to replace the deteriorated coating member in the coating member of the new portion, and the deteriorated coating member is attached to the holder. The part of (1) is taken up by the take-up part, and the card surface protective layer coating device is characterized. 4. A coating device for forming a hard coat as a card surface protective layer by bleeding UV resin from a coating member made of a fibrous fabric onto a card-shaped object to be transferred such as a license or ID card to form a hard coat. The application member is an endless belt-like velvet, and the application member is attached to a holder by winding along the outer surface shape of the holder and a guide roller, and when the deterioration of the application member in the application portion progresses, A card surface protective layer, characterized in that an endless belt-shaped coating member is moved in a certain direction in one direction so that a new portion of the coating member is mounted at the coating position of the holder instead of the deteriorated coating member. Coating equipment.