JP2000025165A - Laminate and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the durability and save on a manufacturing cost and further enable the use of PVC to be dispensed with by printing an appropriate image on a sheetlike base of a synthetic resin and forming a protecting layer on the printed image through applying a dry-curable coating agent. SOLUTION: A card 1 is structured of a first surface side sheet 2 and a back surface side sheet 3, thermally pressed into one piece. The first surface side sheet 2 and the second surface side sheet 3 are made of a polyethylene terephthalate resin and like a sheet half as thick as the standard of the card 1, and has a pattern, a character or the like printed as specified on one of the faces of the card 1 using an offset printing process or the like. An appropriate image for the first surface side of the card 1 is printed 4 on one of the faces of the first surface side sheet 2, and an appropriate image for the second surface side of the card 1 is printed on one of the faces of the second surface side sheet 3. Further on the printing faces 2a, 3a printed 4, a coating agent to be cured by drying is applied. The coating agent to be used is preferably an energy radiation-curable coating such as an ultraviolet-curable coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate made of a synthetic resin used as a cash card or the like, and more particularly, to a laminate which is not easily cracked or peeled off and which can be further dechlorinated. It relates to a manufacturing method.

[0002]

2. Description of the Related Art In addition to the above-mentioned cash card, a laminate made of a synthetic resin is used in various forms such as an identification card, a consultation ticket, and a card key, and is indispensable in today's life.
As shown in FIG. 4, the laminate 11 of the above-described example includes a sheet-like front base material 12, a back base material 13, and two transparent cover sheets 14,. Substrates 12, 1
3 and the covering sheets 14 and 14 are both PVC (polyvinyl chloride)
The front side base material 12 and the back side base material 13 are printed with a front design and a back design, respectively, on the one side of the laminated body 11, and are stacked back to back so that the non-printed surface is superimposed. The cover sheet 14 is formed on the printing surfaces 12a and 13a by hot pressing. By hot pressing, the two substrates 12 and 13 are fused and integrated with each other, and the covering sheets 14 and 14 are also
13 to protect the print while at the same time imparting gloss. If necessary, the magnetic tape is fused and fixed at a predetermined position during the hot pressing.

[0003] Since such a laminated body 11 uses PVC as a material, it may be unexpectedly cracked, for example, when it is cold in winter. Also, especially in the printing ink part, the covering sheet 1
No. 4 was easily peeled off and had poor durability. Furthermore, since the lamination process is performed with the thin covering sheet 14, there is also a problem that the cost is high.

[0004] Further, from the viewpoint of environmental (dioxin) problems, PVC removal has been called for, and instead of PVC, P
PE, a kind of ET (polyethylene terephthalate)
TG is used, but when PET-G is used as a base material,
Although the above-mentioned cracks may be eliminated, there is a problem that the covering sheet does not adhere, and it was not possible to remove PVC.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a laminate having good durability, capable of suppressing costs, and capable of further eliminating PVC, and a main object of the present invention is to provide a method of manufacturing the same. And

Means for achieving this is a laminate in which a protective layer is formed on a sheet-shaped substrate made of synthetic resin by appropriate printing, and the protective layer is coated with a coating agent which cures by drying. It is characterized by being a laminate formed by coating. Further, it is preferable that the sheet-like base material is formed of PET resin. Further, it is preferable that the coating agent is formed of an energy ray curable paint.

Further, another means is a front side sheet having a front side printed on one side of a sheet-like base material made of PET (polyethylene terephthalate) resin, and a back side sheet having one side of a sheet-like base material made of PET resin. A printed backside sheet is provided, an energy-ray-curable paint is applied as a protective layer to the printed surface of these sheets, and after drying, the non-printed surface is polymerized and subjected to hot pressing to integrate each sheet. Characterized in that it is a laminated body.

[0008] Still another means is a printing step of performing appropriate printing on a synthetic resin sheet-like base material, and a coating agent which is cured by drying as a protective layer on the printing layer formed by the printing step. The method is characterized by being a method for producing a laminate having an application step of applying and a drying step of drying the coating agent.

Still another means is a printing step of printing on one side of a sheet-like substrate made of PET resin, and applying an energy-ray-curable paint as a protective layer on the printed layer formed in the printing step. Coating step, drying step of drying the energy ray-curable paint, front side sheet subjected to printing by the printing step, and non-printed side of back side sheet subjected to printing for back side by superimposing. Heat press,
The method is characterized in that the method is a method for manufacturing a laminate having a hot pressing step of integrating each sheet.

[0010]

According to the laminate having the above structure, the protective layer for protecting the printing surface is formed by applying and drying the coating agent without using the laminating process. It can also be applied by printing, no special device is required, the cost can be reduced as compared with the case of laminating, and it is particularly effective in forming a card.

According to the laminate having the above-mentioned structure, since the PET resin is used for the sheet-like base material without using the PVC resin, it is possible to prevent environmental (dioxin and the like) problems. For this reason, in relation to the card, corner without applying the brake at environmental issues in demand for the card continue to increase endlessly, contribute greatly to the future.

In addition, since the protective layer is formed by coating, the adhesive layer has good adhesiveness and is hardly peeled irrespective of whether it is a printing ink portion or not, and the durability is better than that of the conventional configuration. Furthermore, since a protective layer having good adhesion can be formed even when an appropriate resin such as PET, PBT (polybutylene terephthalate) resin or the like which is unlikely to cause environmental (dioxin) problems can be formed on the base material, it is difficult to remove the protective layer. PVC conversion can be realized. Moreover, by using PET resin or the like,
There is no crack even when it is cold, and durability can be improved in this respect as well.

Further, the coating agent may be, for example, U
If an energy ray-curable paint such as a VOP varnish is used, it can be dried in an extremely short time only by passing it through ultraviolet rays or the like, so that the production is simple and the protective layer becomes hard.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1 shows PET (polyethylene terephthalate)
It is a perspective view of card 1 as an example of a layered product manufactured using PET-G which is a kind of resin.

The card 1 has two sheet-like substrates as shown in FIG. 2, namely, a front sheet 2 and a back sheet 3
And are integrated by a hot press. Front sheet 2
The back side sheet 3 is made of PET-G, and is a sheet having a thickness half of the standard of the card, and has a predetermined pattern such as a pattern or character printed on one side by offset printing or the like. One side of the front side sheet 2 is printed with a print 4 for the front side of the card 1, and one side of the back side sheet 3 is printed with the back side of the card 1.

The printing surfaces 2a, 3 on which the printing 4 is performed
In a, a coating agent which is cured by drying is applied. As the coating agent, specifically, an energy ray-curable paint may be used, and as an example, an ultraviolet-curable paint (UV ink) which is cured by irradiation of ultraviolet rays, for example, a UVOP varnish may be used. The UV ink is a mixture of 5 to 40% of a pigment, 30 to 60% of a photosensitive resin, 20 to 40% of a photosensitive monomer, and 5 to 10% of a photopolymerization initiator. This coating agent may be applied by offset printing.

After the application of the coating agent, the coating agent is cured by irradiation with ultraviolet rays to form a hard protective layer 5 on the printing surfaces 2a and 3a. The above irradiation can be performed in a very short time of several seconds, and the operation is simple. Then, as shown in FIG. 2, the front side sheet 2 and the back side sheet 3 are superimposed and hot pressed in a back-to-back state where the non-printing surfaces overlap each other. This hot pressing may be performed at about 130 ° C. for about 30 minutes although it differs depending on the thickness of each of the sheets 2 and 3. Then, by this hot pressing, the front sheet 2 and the back sheet 3 can be integrated by fusion.

When gloss is desired on the protective layer 5, a known mirror plate is placed on the upper surface of the protective layer 5 and the above-described hot pressing is performed to increase the gloss on the surface of the protective layer (the surface of the card 1). Obtainable. If it is necessary to attach a magnetic tape (not shown) to the card 1, a magnetic tape is placed at a predetermined position on the front sheet 2 or the back sheet 3 during the hot pressing, and the magnetic tape is attached. Also at the same time.

In the card 1 constructed as described above, the protective layer 5 is formed not by lamination but by coating and drying of a coating agent. Therefore, no special device is required. The cost can be reduced as compared with the above.

Further, since the protective layer 5 is formed by coating,
Good adhesion and good durability irrespective of whether it is a printing ink part or not. Moreover, since the PET-G resin is used for the front sheet 2 and the back sheet 3 as the base material, there is no crack even when it is cold, and the durability can be improved in this respect.

The card 1 manufactured as described above is
Since both rigidity and gloss can be obtained by the protective layer 5, the conventional PV
The card has the same appearance and feel as a card made of C (polyvinyl chloride), and has the effect of not breaking or being inexpensive. For this reason, PET-
Even if G is used, it is possible to obtain a card 1 which is superior to a conventional card.

In the above-described embodiment, an example is shown in which two sheet-like base materials composed of the front sheet 2 and the back sheet 3 are integrated by hot pressing. FIG. 3 shows another example.
An example in which one sheet base is used is shown.

That is, the sheet 6 is made of one sheet-like base material using PET-G resin as in the previous embodiment. Items 4 and 4 are printed.

The printing surface 6a on which the printing 4 has been performed is coated with a coating agent which cures by drying. As the coating agent, similar to the above-described example,
For example, an ultraviolet curable paint (UV ink) that is cured by irradiation with ultraviolet light, for example, a UVOP varnish may be used.
This coating agent may be applied by offset printing.

After application of the coating agent, the coating agent is cured by irradiating ultraviolet rays to form a hard protective layer 5 on the printing surface 6a. The above irradiation can be performed in a very short time of several seconds, and the operation is simple.

When gloss is desired on the protective layer 5, a known mirror plate is placed on the upper surface of the protective layer 5 and hot-pressed to obtain gloss on the surface of the protective layer (the surface of the card 1). Can be. If it is necessary to attach a magnetic tape (not shown) to the card 1, the magnetic tape is placed at a predetermined position on the front side or the back side during this hot pressing, and the magnetic tape is attached at the same time. When the printing surface is one side, it is preferable to form the protective layer 5 on the surface without printing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a card.

FIG. 2 is a perspective view showing the structure of the card.

FIG. 3 is a perspective view of another example of a card.

FIG. 4 is a perspective view showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Card 2 ... Front side sheet 3 ... Back side sheet 2a, 3a, 6a ... Printing surface 4 ... Printing 5 ... Protective layer 6 ... Sheet

Claims (6)

[Claims] 1. A laminate in which a protective layer is formed on a sheet-shaped substrate made of a synthetic resin by appropriately printing the protective layer, wherein the protective layer is formed by applying a coating agent which is cured by drying. Laminate. 2. The laminate according to claim 2, wherein said sheet-like substrate is formed of PET resin. 3. The laminate according to claim 1, wherein said coating agent is formed of an energy ray-curable paint. 4. A front sheet having a front side printed on one side of a sheet base made of PET resin, and a back side sheet having a back side printed on one side of a sheet base made of PET resin. A laminate formed by applying an energy-ray-curable paint as a protective layer to the printed surface of these sheets and drying, then polymerizing the non-printed surface and applying hot pressing to integrate the respective sheets. 5. A printing step of performing appropriate printing on a synthetic resin sheet-like base material, and a coating step of applying a coating agent which cures by drying as a protective layer on a printing surface formed in the printing step. And a drying step of drying the coating agent. 6. A printing step of printing on one side of a sheet-like substrate made of PET resin, and an application step of applying an energy-ray-curable paint as a protective layer on the printing surface formed by the printing step. A drying step of drying the energy ray-curable paint, a front sheet subjected to printing for the front side in the printing step, and a non-printed surface of a back side sheet subjected to printing for the back side are polymerized and subjected to hot pressing, A method for producing a laminate, comprising: a hot pressing step of integrating each sheet.