JP2001253963A - Transfer ribbon for forming protection film and method of forming protection film for card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer ribbon which can easily form card protection layers having good heat resistance, good abrasion resistance, and good appearance. SOLUTION: This transfer ribbon characterized by having ultraviolet-curable compound layers having card shapes or card shape-like grooves, respectively. The ultraviolet light-curable compound layers are transferred by using the transfer ribbon or a card substrate having a burr-like projected portion on the peripheral portion of the substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective film forming ribbon used for forming a protective film imparting durability such as friction resistance on the surface of a card such as an ID card, and a card using the ribbon. A method for forming the same.

[0002]

2. Description of the Related Art A face image, written information, and the like are printed on the surface of an ID card. The surface of the ID card is usually covered with a transparent protective film in order to protect the face image portion or the entire card from damage or counterfeiting.

As a method of forming a protective film on the surface of an ID card, for example, a polyester resin or the like is applied to a sheet-like support made of PET or the like to a thickness of 3 to 5 μm, dried and transferred. A method has been put into practical use in which a protective film is formed, heated and pressed from the back side by a heat roller, and transferred to the card surface to form a protective film. Since this thermal transfer method is simple, it is widely used for identification cards and the like. However, since the resin that softens at a temperature of 150 ° C. or less is used, the surface hardness is soft,
And it is weak to high temperature.

Further, an ultraviolet curing initiator is mixed with an acrylic resin or an epoxy resin and applied to the surface of the card in a liquid state using a gravure goater or the like, and then cured by irradiating ultraviolet rays to provide strong transparent protection. A liquid coating method for forming a film has also been put to practical use. The liquid coating method can form a thick and hard protective film as compared with the thermal transfer method, but the maintenance of the liquid to be used is difficult. Issues.

[0005] For this reason, by combining the thermal transfer method and the liquid coating method, an ultraviolet-curable compound coating liquid in which the molecular weight of the ultraviolet-curable liquid has been increased in advance is applied to one entire surface of the sheet-like support and dried. , Forming a protective film for transfer,
In the same manner as in the thermal transfer method, this is pressed against the surface of the ID card, transferred by heating and pressurizing, the sheet-like support is peeled off, and then the ultraviolet ray is irradiated to cure the protective film. A method for forming a protective film has been proposed.

However, in this transfer ribbon, when the thickness of the protective film to be formed is increased, burrs are generated on the cut surface of the protective film when the protective film is transferred onto the card, and the appearance of the card is deteriorated. was there. Further, in the conventional transfer ribbon, there is also a problem that the cost is increased because the UV-curable protective film in a range not transferred is wasted.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a card having good heat resistance and friction resistance and a beautiful appearance at low cost. It is another object of the present invention to provide a transfer ribbon for forming a protective film, which can be formed on a substrate.

A second object of the present invention is to provide a method for forming a card protective film which has good heat resistance and abrasion resistance and can easily form a card having a beautiful appearance at low cost. is there.

[0009]

The present invention firstly comprises a sheet-like support and a card-shaped uncured ultraviolet-curable compound layer formed on the sheet-like support. A transfer ribbon for forming a protective film is provided.

Secondly, the present invention is characterized by comprising a sheet-like support, and an uncured ultraviolet-curable compound layer having a groove corresponding to a card shape on the sheet-like support. To provide a transfer ribbon for forming a protective film.

Thirdly, the present invention provides an ultraviolet curable compound by aligning and abutting the transfer ribbon for forming a protective film according to the first or second invention on a card substrate, and applying heat and pressure. A method for forming a protective film for a card, comprising a step of transferring a layer.

Fourth, the present invention provides a protective film-forming transfer ribbon having a sheet-like support and an uncured ultraviolet-curable compound layer formed on the sheet-like support. By contacting the main surface of the card base material having a burr-shaped protrusion at the peripheral portion, and applying heat and pressure, the uncured ultraviolet curability of the area defined by the abutment of the burr-shaped protrusion is A method for forming a protective film for a card, comprising a step of transferring a compound layer onto the main surface of the card substrate.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A transfer ribbon for forming a protective film according to a first aspect of the present invention comprises a sheet-like support and a card-shaped uncured film formed on the sheet-like support as a protective film-forming layer. And a UV-curable compound layer.

A plurality of card-shaped uncured ultraviolet-curable compound layers can be formed in an arbitrary arrangement on a sheet-like support.

The transfer ribbon for forming a protective film according to the second aspect of the present invention has a sheet-like support and, as a protective film-forming layer, a groove having a shape corresponding to a card shape on the sheet-like support. And an uncured ultraviolet-curable compound layer.

The grooves corresponding to the card shape can be continuous or discontinuous.

A plurality of card shapes formed by the grooves can be formed in an arbitrary arrangement on the sheet-like support.

Further, the shape and depth of the groove are determined during transfer.
There is no particular limitation as long as the card-shaped portion can be peeled off from the ultraviolet curable compound layer with good appearance.

In the method for forming a protective film for a card according to a third aspect of the present invention, the transfer ribbon for forming a protective film according to the first or second aspect is positioned on a card substrate when the protective film is formed. The method includes a step of transferring the ultraviolet-curable compound layer by bringing the two layers into contact with each other, heating and applying pressure.

According to the method of the third aspect, the protective film forming layer containing the ultraviolet curable compound is provided in advance in the form of a card on a sheet-like support, or the protective film containing the ultraviolet curable compound is provided. Since a continuous or discontinuous groove corresponding to the card shape is provided on the surface of the formation layer, a protective film having a good appearance can be formed without causing burrs on the protective film after transfer.

In the method for forming a protective film for a card according to a fourth aspect of the present invention, when forming the protective film, a sheet-like support and an uncured ultraviolet-curable compound layer formed on the sheet-like support By contacting this main surface of a card base material having a burr-shaped protruding portion at the peripheral portion on one main surface side with a transfer ribbon for forming a protective film having a burr-shaped protruding portion, Transferring the uncured ultraviolet-curable compound layer in a region surrounded by the contact portion to the main surface of the card base material.

According to the method according to the fourth aspect, only the ultraviolet-curable compound layer in the portion molded by the burr-like projections provided on the peripheral portion of the card base material serves as a protective film on the card base material. Thus, a protective film having a good appearance can be formed without generating burrs on the protective film.

Further, the transfer ribbon according to the first to fourth aspects can further be provided with a sensor mark for positioning at a predetermined interval.

By providing such a sensor mark, the uncured ultraviolet-curable compound layer in a desired area can be easily aligned with the card substrate in the transfer step and transferred easily. .

Examples of the sheet-like support used in the present invention include polyethylene terephthalate, polyester, polyamide, polyimide, polycarbonate, cellulose ester, polyethylene, polypropylene, polystyrene and polyacrylate. The range of 1 to 100 μm is preferred.

Examples of the ultraviolet curable compound which can be used in the present invention include various commercially available (meth) acrylic esters of trifunctional or higher alcohols. Examples of such acrylates include pentaerythritol triacrylate, pentaerythritol trimethacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, dipentaerythritol tetraacrylate, and dipentaerythritol. Erythritol hexaacrylate, dipentaerythritol hexamethacrylate,
Examples include dipentaerythritol pentamethacrylate, pentaerythritol polyacrylate, and dipentaerythritol polyacrylate.

[0027] These trifunctional or higher functional ultraviolet curable compounds can be used alone or in combination. Commercially available products include, for example, Aronix M-305, M-309, trade names manufactured by Toa Gosei Chemical Industry Co., Ltd.
M-310, M-315, M-320, M-325, M
-330 and M-400, manufactured by Shin-Nakamura Chemical Co., Ltd. NK Ester TMPT, A-TMPT, A-TMM-
3, A-TMM-3L, A-TMMT, and A-953
0 and the like.

Further, a photoreaction initiator can be used in the ultraviolet curable compound composition used in the present invention.
Examples of such a photoreaction initiator include benzophenones and acetophenones.

The ultraviolet-curable compound composition used in the present invention may contain a binder resin. The binder resin can be compatible or incompatible with the ultraviolet-curable compound composition, and generally, various resins capable of forming a film can be used. As the binder resin, for example, polyamide resin, polyester resin, epoxy resin, polyurethane resin, polyacrylic resin, vinyl resin,
And polyvinyl alcohol-based resins.

The transfer ribbon for forming a protective film of the present invention is prepared, for example, by dissolving or dispersing a binder and an ultraviolet-curable compound composition in a solvent to prepare a coating liquid.
For example, a desired protective film forming layer can be formed by applying the composition in a card form or uniformly on one surface of the support at regular intervals by gravure printing or the like, followed by drying. Dry film thickness is 1 ~
50 μm is preferred.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

Example 1 FIG. 1 is a sectional view showing an example of the structure of a transfer ribbon according to a first aspect of the present invention. FIG. 2 shows a view of the transfer ribbon shown in FIG. 1 as viewed from the protective film forming layer side.

As shown in the figure, the transfer ribbon 1 has a protective film forming layer 3 formed in a card shape at a predetermined interval on a sheet-like support 2. Is provided with a sensor mark 4 for positioning the protective film forming layer 3 and a card substrate (not shown) for transferring the same.

For this transfer ribbon 1, for example, a 100 μm thick polyethylene terephthalate film is prepared as a sheet-like support 2, and a coating liquid having the following composition is coated on one surface of the transfer ribbon 1 at regular intervals by gravure printing. After coating, the positioning sensor mark 4 is printed, and 14
It was obtained by heating and drying at 0 ° C. for 1 minute to form a protective film forming layer 3 made of an ultraviolet-curable protective compound having a thickness of about 22 μm.

Protective film forming layer composition Polyacrylic binder resin 100 parts by weight UV curable compound (pentaerythritol triacrylate) 60 parts by weight Photoreaction initiator 10 parts by weight Next, the above-mentioned transfer ribbon is used. An example of the method for forming a protective film for a card according to the third aspect of the present invention will be described.

FIG. 3 is a view for explaining an example of a thermal transfer type protective film forming apparatus used in the present invention.

As shown in FIG.
Is a reel 11 for feeding out the transfer ribbon 1 for forming a protective film, a winding reel 12 for winding the transfer ribbon 1 for forming a protective film unreeled from the reel 11, and a reel 11. The thermal head 14 and the platen roller 15 which are disposed to face each other with the protective film forming transfer ribbon 1 and the card base material P interposed therebetween, and a thermal head drive circuit 16 which energizes and drives the thermal head 14
A sensor 17 for detecting a mark for position detection on the transfer ribbon 1 for forming a protective film, a sensor 18 for detecting a card base material P, and driving of a thermal head based on detection signals from the sensors 17 and 18. CPU that controls the circuit 15
19. The thermal head 14 is configured by arranging a plurality of heating elements in the width direction of the transfer ribbon 1 for forming a protective film (the direction perpendicular to the plane of the drawing).

The card base material P is arranged at equal intervals on a belt-shaped carrier (not shown), and is conveyed between the protective film forming transfer ribbon 40 and the platen roller 15 by this carrier. As shown in FIGS. 1 and 2, for example, the transfer ribbon 40 for forming a protective film selectively forms an uncured ultraviolet-curable compound layer 3 on the sheet-like substrate 2 according to the shape of the card substrate P, for example. In addition, the sensor mark 4 for position detection can be formed for each fixed section. The sensor 17 may be any sensor as long as it can detect a mark on the protective film forming transfer ribbon 40. Specifically, for example, a light emitting element that emits light toward the protective film forming transfer ribbon 40 may be used. Transfer ribbon 40 for forming protective film
A reflection-type optical sensor including a light-receiving element that detects reflected light from a light source can be used. Similarly, for example, a reflection type optical sensor can be used as the sensor 18.

Transfer ribbon 1 for forming protective film and card base material P
Is sent in synchronization between the thermal head 14 and the platen roller 15. For example, as described above, when the protective film forming transfer ribbon 1 is formed by selectively forming an ultraviolet curable compound layer according to the shape of the card base material P, the protective film forming transfer ribbon 1 is used.
The upper part of the ultraviolet curable compound layer and the card base material P have the same timing with the thermal head 14 and the platen roller 1.
Sent between 5.

The thermal head drive circuit 16 includes a CPU 19
After a certain period of time has passed since the sensor 18 detected the leading edge of the card base material P based on the detection signals from the sensors 17 and 18, the card base material P is moved to the thermal head 14 and the platen roller 15. And the sensor 17 detects the position detection mark, that is, the card-shaped protective film forming layer on the card substrate P and the protective film forming transfer ribbon 1 passes directly below the thermal head 14. During this period, a driving current is supplied to all the heating elements of the thermal head 14. At this time, heating and pressurization can be performed, for example, at a temperature of 170 ° C. and a pressure of 9 kgf / m ² . Thereby, the ultraviolet curable compound layer on the transfer ribbon 1 for forming a protective film is transferred onto the card base material P.

Thereafter, the sheet-like support 2 of the transfer ribbon 1 for forming a protective film is peeled off.

Subsequently, by irradiating the protective film forming layer provided on the card base material with ultraviolet rays by means of an ultraviolet irradiating means (not shown), the ultraviolet curing protective film is completely cured,
Burrs on the protective film after transfer were suppressed, and a card with a beautiful appearance could be manufactured.

FIG. 4 is a sectional view showing the structure of an example of a card obtained by using the present invention, and FIG. 5 is a front view thereof.

As shown in FIGS. 4 and 5, this card 1
No. 00 had a structure in which the protective film 3 was formed on one main surface of the card base material 30, and had a clean appearance without burrs.

The obtained card was subjected to a high temperature environment test,
In addition, a surface hardness test using a sapphire needle revealed that the material had good heat resistance and friction resistance.

Embodiment 2 FIG. 6 is a sectional view showing another example of the configuration of the transfer ribbon according to the second aspect of the present invention. FIG. 7 shows a view of the transfer ribbon shown in FIG. 6 as viewed from the protective film forming layer side.

As shown, this transfer ribbon 21 is
A protective film forming layer 23 provided on the sheet-like support 2,
The surface of the protective film forming layer 23 has grooves 6 formed in a card shape at regular intervals, and further, on the sheet-like support 2, the protective film forming layer 23 and a not shown for transferring the same are formed. A sensor mark 4 for positioning with the card base material is provided.

The above-mentioned transfer ribbon 21 is provided with a protective film forming layer in the same manner as in Example 1 except that a coating solution is applied to one entire surface of a sheet-like support made of a polyethylene terephthalate film, and then opposed. Of the pair of rollers,
Using a mechanical unit having card-shaped projections on one roller, the sheet-like support 2 provided with a protective film forming layer 23 between the two rollers is passed through, and a card-shaped groove 6 is formed on the surface of the protective film forming layer. Was obtained by forming

According to another example of the card forming method according to the third aspect of the present invention, FIG.
When the transfer ribbon shown in FIG. 7 is used in the protective film forming apparatus 10, when the sensor 17 detects the sensor mark 4, the card base material P and the protective film forming transfer ribbon 21 are detected.
The upper card-shaped groove 6 passes just below the thermal head 14.
3 is transferred along the groove 6 into a card shape, and the same operation as that of the first embodiment is performed except that the other protective film forming layer 23 and the sheet-like support 2 are separated and removed. In this way, burrs on the protective film after transfer were suppressed, and a card having a good appearance was obtained, similar to the cards shown in FIGS.

Embodiment 4 FIG. 8 is a view showing the structure of an example of a protective film transfer ribbon used in a method for forming a protective film for a card according to a fourth aspect of the present invention. FIG. 9 shows a view of this ribbon viewed from the protective film forming layer side.

As shown in the drawing, the ribbon 31 has a protective film forming layer 33 uniformly formed on the sheet-like support 2, and furthermore, has a protective film forming layer 33 on the sheet-like support 2. A sensor mark 4 can be provided for positioning the 33 and a card base (not shown) for transferring the same.

The transfer ribbon 31 was obtained in the same manner as in Example 1 except that a coating solution was applied to one entire surface of a sheet-like support made of a polyethylene terephthalate film.

FIG. 10 is a diagram showing an example of a card base material used in the method for forming a protective film for a card according to the present invention.

This card base material 50 has a structure in which a burr-like protrusion 42 is provided on the peripheral edge of one main surface 43 as shown in the figure.

The card substrate 50 was manufactured as follows. First, three pieces of polyethylene terephthalate film having a thickness of 150 μm are stuck together to form a total thickness of 450 μm.
Was prepared. Next, a male and female punching machine of a method of dropping down is prepared, and the prepared sheet is punched into a card shape.
A height of about 10 is provided at the peripheral edge of the card surface 43 opposite to the pulling direction.
The card substrate 50 having the burrs 42 of μm was formed. At this time, the size of the burr-like protrusion 42 of the card can be controlled by the speed of the stroke, the gap between the male type and the female type, and the like.

As the punching machine used in the present invention, there are generally known a female-type punching machine and a female-type and male-type punching machine. Either type of punching machine may be used. It is preferable to use male and female punching machines from the viewpoint of easy burr formation and high durability of the kata. Further, in the case of using male and female punching machines, either of a system of dropping a card below and a pushback system may be used.

In FIG. 3, the transfer ribbon shown in FIGS. 8 and 9 is applied as the transfer ribbon 40, and the card base 50 shown in FIG. In this case, when the sensor 17 detects the sensor mark 4, the area to be transferred on the card base material P and the transfer ribbon 1 for forming a protective film passes immediately below the thermal head 14. Except that the protective film forming layer is molded along the contact portion of the burr-shaped protrusion 42 and transferred to a card shape, and the other protective film forming layer and the sheet-like support are separated and removed. The same operation is performed.
In this way, burrs on the protective film after transfer are suppressed, and a card having a good appearance can be obtained.

FIG. 1 is a sectional view showing an example of the obtained card.
It is shown in FIG.

As shown, the obtained card 200
Has a configuration in which a protective film 33 transferred with good appearance along a burr-shaped protrusion 42 is provided on a card base material 50.

A transfer ribbon for forming a protective film was formed in the same manner as in Example 1 except for Comparative Example 1.

When a protective film was transferred and formed on a card substrate using the obtained transfer ribbon, burrs were generated on the protective film when the transfer ribbon was peeled off from the card.

Subsequently, the card on which the UV-curable protective film was transferred was irradiated with ultraviolet rays to completely cure the UV-curable protective film. However, since the protective film was burred, a card with a beautiful appearance could be manufactured. Did not.

As shown in Examples 1 to 4, when the present invention is used, a card having a good appearance without burrs can be easily formed. However, as shown in Comparative Example 1, burrs cannot be formed by the conventional method. Occurred.

[0064]

According to the present invention, a protective film can be provided on the surface of a card without generating burrs, so that a card with a beautiful appearance can be produced.

Further, according to the present invention, a protective film having good heat resistance and friction resistance can be provided because an ultraviolet curable compound is used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of an example of a transfer ribbon of the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a diagram for explaining an example of a thermal transfer type protective film forming apparatus used in the present invention.

FIG. 4 is a cross-sectional view illustrating a configuration of an example of a card obtained by using the present invention.

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a cross-sectional view illustrating a configuration of another example of the transfer ribbon of the present invention.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a view showing an example of the configuration of a protective film transfer ribbon used in the method for forming a protective film for a card of the present invention.

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a view showing an example of a card base material used in the method for forming a protective film for a card of the present invention.

FIG. 11 is a cross-sectional view illustrating a configuration of another example of a card obtained by the present invention.

[Explanation of symbols]

 1, 21, 31, 40: transfer ribbon 2: sheet-like support 3, 23, 33: protective film forming layer 4: sensor mark 6: groove 10: protective film forming device 11, 12, ... reel 14: thermal head 15: Platen roller 16: Thermal head drive circuit 17, 18: Sensor 19: CPU 41: Sag 42: Burr-shaped protrusion 50: Card base material 100, 200: Card

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B42D 15/10 501 B42D 15/10 501C C08F 2/48 C08F 2/48 C08L 101: 00 // C08L 101: 00 B41M 5/26 BF term (reference) 2C005 HA06 HA10 HA17 HA19 HB01 KA07 LA03 LA11 LA14 LB03 2C068 AA06 BB31 BD15 BD17 2H111 AA03 AA10 AA26 AA40 BA53 BA61 BB15 4F006 AA12 AA15 AA42 ABA42 AB42 AB42 AB 4J011 QA23 QA24 RA03 RA06 RA07 RA09 RA10 SA01 SA21 UA01 VA04 VA10 WA02 WA07

Claims (5)

[Claims] 1. A transfer ribbon for forming a protective film, comprising: a sheet-like support; and a card-shaped uncured ultraviolet-curable compound layer formed on the sheet-like support. 2. A transfer for forming a protective film, comprising: a sheet-like support; and an uncured ultraviolet-curable compound layer having a groove corresponding to a card shape on the sheet-like support. ribbon. 3. The transfer ribbon for forming a protective film according to claim 1, wherein sensor marks are further provided at predetermined intervals. 4. A step of transferring the ultraviolet-curable compound layer by aligning the transfer ribbon for forming a protective film according to claim 1 or 2 on a card substrate, contacting the transfer ribbon, and applying heat and pressure. A method for forming a protective film for a card. 5. A protective film-forming transfer ribbon having a sheet-like support and an uncured ultraviolet-curable compound layer formed on the sheet-like support, wherein a burr-like part is formed on the peripheral edge on one main surface side. By contacting the main surface of the card base material having the protrusion, and applying heat and pressure, the uncured ultraviolet-curable compound layer in the area defined by the contact portion of the burr-like protrusion is removed from the card base. A method for forming a protective film for a card, comprising a step of transferring onto a main surface of a material.