JP3353158B2 - Card surface protective layer coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an 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 and use of cards have been extremely remarkable. In particular, ID cards and various cards related to identification such as a license have been increasing.

[0003] These naturally have problems of forgery prevention and protection against scratches or the like due to handling, and countermeasures are important. Such cards often use special photographic prints, and in the past, the method of lamination is generally used.This method is a good method including surface protection, but air bubbles are mixed during lamination. There is a problem that it is easy, and after lamination, labor such as punching is required, and the cost is increased. On the other hand, the method of directly applying the resin is also excellent in cost, for example, Japanese Patent Application No. 64-90261.
And a method using an application roll as described in JP-A-64-90266.

[0004]

However, in such a method, since the bead is applied, the bead is transferred at a stroke to the rear end portion of the card, so that a so-called rear end film thickness is formed, and unevenness is formed on the protective layer. In many cases, the coating liquid is exposed in the apparatus, and there is a problem in handling.

[0005] Due to the nature of the card, a card having a surface protective layer excellent in scratch resistance, water resistance, chemical resistance and surface smoothness has been demanded.

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

[0007] However, when a fibrous material such as felt, nonwoven fabric, or cotton is used as a coating member, irregular coating unevenness occurs on the coating surface because the fibers are non-uniform. Also,
When the cloth-like coating member is replaced, the surroundings may be stained because the coating member is wet with the coating liquid.

[0008] The present invention is to provide a coating NunoSo location of the card surface protective layer which solves the above problems challenges purposes.

[0009]

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

[0010]

(A) A coating device for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like object such as a license or an ID card by applying UV resin from an application member made of a fibrous fabric. In the jig, the coating member is velvet, and the mounting of the coating member to the holder is performed along the outer surface shape of the holder, and at least along the inner surface of the jig, the size of which is increased by the thickness of the coating member. The application member is placed on the holder, the clip of the holder is lifted, the jig is placed on the holder, the application member is pressed by the clip, the jig is removed, and the clip of the clip on the holder is removed. Wherein the application member is attached to the holder by the action of extending the application member by the spring.

( B ) A coating apparatus for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like object such as a license, an ID card, etc., from a coating member made of a fibrous fabric. In the above, the coating member is velvet, and the mounting of the coating member to the holder is performed by winding a long winding belt as the coating member from the unwinding portion to the holder along at least the outer shape of the coating position of the holder. When the application member is deteriorated, a predetermined amount is sent out from the unwinding portion by a feed-out roller, and a new portion of the application member is mounted on the holder instead of the deteriorated application member and the deteriorated application member is mounted. A device for coating a card surface protective layer, wherein a part of the member is wound around a winding part.

( C ) A coating apparatus for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like object to be coated such as a license or an ID card from a coating member made of a fibrous fabric. In the above, the coating member is an endless belt-shaped velvet, the mounting of the coating member to the holder is wound along the outer surface shape of the holder and the guide roller, and at the stage where the deterioration of the coating member of the coating portion has advanced. Wherein the endless belt-shaped coating member is moved in one direction by a fixed amount so that a new portion of the coating member is attached to the coating position of the holder in place of the deteriorated coating member. Layer coating equipment.

[0014]

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

The object 11 to be coated in the form of a card has a drive wheel 21,
The belt or chain 25 of the transport device 20 comprising an endless belt or chain 25 wound around the driven wheel 22
The card-shaped coating objects 11 are supplied and set one by one from a card supply device 10 at a supply position on a pallet or a stage 26 connected to the pallet or stage 26, and are conveyed to the coating position. The fixing of the card-shaped object 11 to the stage 26 can be achieved by means such as suction, friction, adhesion, static electricity, and claw-shaped projections. In the application position,
A coating unit 100 including a coating liquid tank 101 and a coating unit 110 having a coating member 107 is on standby.

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

In the application section, the card-shaped object 11 is applied to the application section 110.
When it reaches below, it descends to the top of the card-shaped object 11 and comes into contact with the card-shaped object 11. Accordingly, it is possible to prevent the pallet or the stage 26 carrying the card-shaped object 11 such as a pallet or a stage from adhering liquid and prevent the coating liquid from flowing back to the back surface of the card-shaped object.

The vertical mechanism for bringing the application section into contact with the card-shaped object 11 is not only a method of moving the application section up and down, but also a pallet or stage 26 of a conveyor for conveying the card-shaped object 11 together with the card. It may be moved up and down.

As described above, the card-shaped coating object 11 does not necessarily have to be placed on the pallet or the stage 26, but may be directly conveyed on a conveyor.
In this case, the vertical mechanism for bringing the application section 110 into contact with the card-shaped application target 11 is performed by pushing up or down the belt surface of the conveyor.

The vertical movement mechanism for bringing the application section into contact with the card-shaped object to be coated may be configured to raise and lower the application section in addition to raising and lowering the belt surface of the conveyor.

When the application section 110 is moved up and down, the application section 110
And the coating liquid reservoir 101 can be separated, and only the coating section 110 can be moved up and down. At this time, it is preferable that the application section and the application liquid reservoir are connected by a liquid feeding tube, and the application section 110 and the application liquid reservoir (application liquid tank) 101 are each easily replaced with a cartridge type. In addition, coating liquid reservoir (coating liquid tank) 101
In the case where a valve is provided between the liquid supply tube and the application unit 110, the parts to be replaced with the cartridge can be reduced in size by pressing and shutting off or returning the liquid supply tube.

When the coating liquid reservoir (coating liquid tank) 101 is closed, the internal pressure changes due to a change in environmental temperature or the like, and the liquid supply to the coating section 110 is not constant, so that stable coating may not be performed. The liquid reservoir (coating liquid tank) 110 is preferably open to the atmosphere.

After the coating, the card-shaped object 11 is carried to a processing unit 30 for irradiating the next energy ray, where it is irradiated with ultraviolet rays or the like, whereby the applied material is cured and finished. Then, it is collected at the stage when it has passed 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 application liquid tank and the application section 110 are separated by upper and lower partitions 103 to form an integral structure, and the bottom is provided with an application member 107 made of a fibrous fabric such as a porous fibrous material or a woven fabric as described above. Is overturned. And FIG.
As shown in (a), a small tapered hole 105 is formed at the center of the intermediate partition 103, and a piston 106 is dropped into the small tapered hole 105.
It hits the inner surface of 07 slightly down. During application, as shown in FIG.
Is pushed up in the direction of the arrow through the application member 107, and the application liquid 10 is passed through a gap formed between the piston 106 and the tapered hole 105.
2 seeps out. At the time of non-application, the piston 106 descends due to the weight of the piston 106, the gap with the tapered hole 105 disappears, and the exudation of the liquid stops.

An internal member 121 is provided inside the coating section 110, and as shown in FIG. 2 (b), the piston 106 is opened as described above, so that a required amount of coating liquid 102 is supplied for each sheet. Is temporarily absorbed by the internal member 121 to further prevent the liquid from dripping. The amount of the coating solution to be discharged can be variously adjusted depending on the taper angle of the piston and the number of pistons. The material of the internal member 121 is preferably a fibrous material such as sponge, cotton, nonwoven fabric, or a fibrous woven fabric such as woven fabric.

However, when the coating member 107 is attached to the card-shaped
If the application is performed with the bulge caused by the protrusion at the lower end of the piston 106 when the contact 1 is pushed up, the card-shaped object to be coated 11 will receive the uneven coating on the vertical streaks almost in the middle of the traveling direction. This is prevented by providing a bar 108 or a net at the lower end of the piston 106 if possible as shown in the side sectional view of FIG. Such a factor that causes vertical streaks is eliminated, and good coating becomes possible.

As another means, as shown in the side sectional view of FIG. 4, a resistor for contacting the upper part of the coating member 107 and balancing the surface tension when the coating liquid 102 oozes out. By adding 125, of course, it is possible to eliminate the fear of vertical streaks and 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, there is only one supply hole provided by the piston, and if it is left as it is, a large amount will flow straight into the center, and a thick coating may be applied to the center and a thin coating may be applied to the periphery.

To prevent this, a slit groove 112 is provided in the width direction from the tapered hole 105 as shown in the side sectional view of FIG. 5A and the plan view of the partition wall 103 of FIG. 5B. This slit has a very narrow width, and the liquid tends to spread to the periphery by capillary action, so that the uniformity of the distribution of the coating liquid in the width direction can be achieved.

Similarly, in order to improve the uniformity of the distribution of the coating solution in the width direction, a diffusion plate 114 as shown in the plan view of FIG. It has been confirmed that the arrangement is effective as shown in the sectional view.

Further, the supply of the coating liquid from the coating liquid tank 101 to the coating section 110 is performed by the piston 106 or by using an electric solenoid valve or by opening and closing the valve by mechanical cam drive. It may be performed by a method of supplying a fixed amount by a rotary pump or the like.

As the application member, a porous fibrous material or a fibrous woven fabric such as a woven fabric is used. In the fibrous woven fabric, a moquette, a plush velor, a seal, a velvet, and a suede are used. Fabrics with piles, so-called velvets, 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, particularly the material of the pile, is preferably polyester, rayon or nylon. Among them, polyester and rayon can obtain a good coating finish. The length of the pile is preferably 1 to 5 mm. The fiber density is 30 to 80 warp yarns per inch and 1 weft yarn per inch.
Preferably, it is 20 to 70 lines per inch.

In the present coating apparatus, for example, an epoxy UV curable resin was used as the coating liquid, but a 500 μm thick PET was used.
When the card was coated with a target film thickness of 10 μm, a uniform card surface protective layer was formed without increasing the rear end film thickness.

However, when the same resin as 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 thickness of 45 μm.

In the present invention, the coating section 110 and the coating liquid reservoir (coating liquid tank) 101 are preferably integrated, and can be replaced by a cartridge system, so that the handling of the coating liquid is further simplified. You.

By using velvet as the coating member 107, the coating could be made uniform and stable. However, the velvet has been repeated many times, for example, 5,000 or 10,000.
When applied to as many as 00 cards, the pile will fall down, or the pile will be reduced and shortened. Then you have to replace it with a new one.

The replacement must be performed smoothly, easily and safely. The method and the apparatus will be described with reference to the front view of FIG. 1, the perspective view of the coating unit of FIG. 7A, and the perspective view of the jig of FIG. 7B.

In this case, the coating member 102 is cut into a sheet shape, and when the coating member 107 is deteriorated, the clip 128 is pinched to release the presser when the coating member 107 is deteriorated. First, the member 107 is fitted and placed on the inner surface of the jig 131.

Then, the clip is picked and the jig 131 is applied to the application section 1.
When it is inserted into the holder 110A of 10 and the clip is released,
The velvet of the new applying member 107 is held between the clip 128 and the holder 110A, and the applying member 107 contacts the holder 110A and is appropriately tensioned by the spring 129, so that the applying member 107 is tightly fixed to the holder 110A. Is done. Thus, the mounting of the new coating member 107 is accurately and simply completed by extracting the jig 131. Jig 1 here
The inner surface of 31 and the outer surface of holder 110A have similar shapes with the velvet of coating member 107 interposed therebetween.

The above is an embodiment of a method and an apparatus for exchanging the sheet-like coating member 107. In the front view shown in FIG. 8, the coating member 107 is formed into a long roll by unwinding the coating member 107. When the application member is deteriorated, the deteriorated one is moved in the direction of the winding axis, and a new one is fed out and replaced.

That is, the long winding application member 107 is connected to the unwinding roll 1
The feed roller 152 which has been applied to the roller 51, has the over-rotation prevention brake 152A attached thereto, and is pressed by the feed amount display roller 152B.
Thus, the application member 107 is pulled out by a necessary amount at the time of new renewal. On the other hand, the coating member is a tensioner 15
3. After passing through the coating unit 110, the one-way clutch winds up the winding shaft 155, which is prevented from reversing. That is, the deteriorated one is wound up, and the new one is unwound from the unwinding roll 151.

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

In the application section 110, when the card of the member to be applied is applied to the application section, the application member 107 lifts the belt 25 of the conveyor 20 so that the card comes into contact with the application member 107 at an appropriate pressure and is stable. The application of the uniform surface protection layer is completed.

In the perspective view of FIG. 9 and the front view of FIG. 10, the velvet of the coating member 107 is fixed to 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
And a state in which the coating unit 110 is wound around the holder 10A. When the velvet portion has deteriorated, a knob provided on the drive roller is turned in one direction by a fixed amount so as to be replaced with a new one. The endless belt does not have a leader belt, and the coating member 10
It can also be composed of only 7.

[0047]

According to the present invention, at the time of coating, a predetermined amount of coating liquid necessary for the coating is supplied, which is oozed by the coating member and applied onto the card-shaped object to be coated, and the liquid is applied when not applied. Leakage did not occur, and at the time of coating, the coating solution spread evenly on the card, so that the protective layer on the card surface could be stably and efficiently applied. In particular, it is covered with a beautiful protective layer without producing a rear end film thickness,
High quality cards with excellent chemical resistance can now be realized.

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

[Brief description of the drawings]

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

FIG. 2 is a side sectional view of one embodiment of a coating unit.

FIG. 3 is a partial side sectional view of one embodiment of a coating unit.

FIG. 4 is a partial side sectional view of another embodiment of the application section.

FIG. 5A is a side sectional view showing a slit groove of an application unit.
(B) is a plan view thereof.

FIG. 6A is a partial sectional side view showing a state where a diffusion plate is put in an application section. (B) is a plan view of the diffusion plate.

FIG. 7 is a perspective view of a coating section and a mounting jig of the coating member, showing a replaceable structure of the coating member.

FIG. 8 is a front view of a coating apparatus in which a long winding member is exchangeably mounted.

FIG. 9 is a perspective view of an application section to which an endless belt-shaped application member is attached.

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

[Explanation of Signs] 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 unit 100 Coating means 101 Coating liquid tank (Coating) Reservoir) 102 Coating liquid 103 Partition wall 105 Tapered hole 106 Piston 107 Coating member 108 Bar 110 Coating part 110A holder 112 Slit groove 114 Diffusion plate 121 Internal member 125 Resistor 128 Clip 129 Spring 131 Jig 151 Unwind roll 152 Feeding roller 153 Tensioner 155 Take-up shaft 161 Drive roller 162 Guide roller 163 Guide roller 164 Clip 165 Clip

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI G03C 11/00 351 G03C 11/08 11/08 B41M 5/26 (56) References JP-A-2-3121 (JP, A) JP-A-5-42789 (JP, A) JP-A-5-329415 (JP, A) JP-A-6-222535 (JP, A) Jiko 34-4593 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B42D 5/00-15/10 B05C 1/02 B05D 1/28 B41M 5/26 G03C 8/40 G03C 11/00

Claims (3)

(57) [Claims] 1. A coating apparatus for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like coating object such as a license or an ID card by applying the UV resin to the coating member made of a fibrous fabric. , the coating member is a velvet, mounted in the holder to the holder of the coating member
Along the outer surface shape, at least as large as the thickness of the application member
Along the inner surface of the jig whose inner shape is
Place the application member, lift the clip of the holder, and
Cover with a jig and press the coating member with the clip.
Then, remove the jig and place the clip on the holder.
The operation of extending the application member by the spring of the clip at
The coating device for a card surface protective layer, wherein the coating member is actuated so as to be mounted on the holder . 2. A coating apparatus for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like object to be coated such as a license or an ID card from a coating member made of a fibrous fabric. The coating member is velvet, and the mounting of the coating member on the holder is performed by the holder.
Both along the outer surface shape of the coating position less, and the coating member
The long belt from the unwinding section to the holder.
When the coating member is deteriorated, it is unwound from the unwinding portion.
Applying a fixed amount with a roller to apply a new part
The member is attached to the holder instead of the deteriorated coating member.
And the part of the coating material that has deteriorated is
Go as coating apparatus of the card surface protective layer, characterized in that the. 3. A coating apparatus for forming a hard coat as a card surface protective layer by applying a UV resin to a thermal transfer type card-like object to be coated such as a license or an ID card from a coating member made of a fibrous fabric. , End the coating member
And less of the belt-like velvet, the attachment to the holder of the coating member along the outer surface shape and the guide rollers of the holder, the winding turn, advanced stages deterioration of the coating member of the coating cloth portion
To move the endless belt-shaped coating member in a certain amount in one direction.
In this way, the new part of the coating material replaces the deteriorated coating material.
A card surface protection layer coating device, which is mounted at a coating position of the holder .