JP2002283524A - card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a card to be made by considering disposal of it without bringing about a deformation of a card shape or change in a material quality even when used or stocked in a high temperature, without occurrence of a curl at the time of embossing processing and further without problems of generation of hydrogen chloride or dioxin when incinerated after use. SOLUTION: The card comprises a heat resistance sheet layer having a high heat resistant and made of an amorphous polyethylene terephthalate, a polycarbonate and/or polyarylate laminated on at least one side surface of a sheet layer containing an amorphous polyethylene terephthalate as a main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium used for, for example, a cash card, a credit card, an ID card (identification card), a membership card, a prepaid card and the like. Or, even when exposed to high temperatures such as in-vehicle applications or home appliances such as computers that may be stored, the card shape does not deform and the material does not change. It is about cards that are easy to use.

[0002]

2. Description of the Related Art Conventionally, magnetic recording medium type cards have been widely used in the fields of cash cards, credit cards, ID cards and the like, and are mainly made of polyvinyl chloride (PVC) resin or vinyl chloride. -A vinyl acetate copolymer is used, and in particular, polyvinyl chloride resin is generally used. Polyvinyl chloride resin is excellent in physical mechanical properties and embossability of a character portion, and is widely used as a perfect material for card materials.

[0003] In recent years, however, the range of use of cards is not limited to the fields of cash cards, credit cards, ID cards, and the like, but extends to various fields. In addition to magnetic recording media, contact-type IC modules are used as card base materials. As an information recording layer, embedded IC card, IC card with magnetic stripe, non-contact IC card with antenna and IC module with antenna and IC module, non-contact IC card with magnetic stripe, and reversible thermosensitive recording material Various functional cards such as a built-in reversible thermosensitive recording card, a card in which they are arbitrarily combined, or a card having all of them have appeared. Applications include electronic wallets, commuter passes, telephone cards, driver's licenses, on-board cards, etc. The materials used for such cards are more flexible than conventional card materials, such as scratch strength, tensile strength, etc. , High reliability including resistance such as strength, storage characteristics, heat resistance, and chemical resistance are required. Further, polyvinyl chloride (PVC) has a problem in disposal after use, particularly generation of hydrogen chloride gas during incineration, damaging the incinerator and shortening its life. Although the relationship with dioxin has not been clarified, the movement to remove PVC has become active in countries such as Germany and Northern Europe.
In Japan, there is a similar trend in the field of construction materials and industrial materials.

A general magnetic card is obtained by printing a white polyvinyl chloride (PVC) sheet by a known printing method such as offset printing, gravure printing, screen printing, and laminating a highly transparent PVC sheet on both sides. After that, the magnetic tape is transferred, heat-sealed with a heating press, and PVC
It is manufactured by integrating a base material laminate and a magnetic tape and punching it into a card shape with a mold of a predetermined size. At this time, the thermal transfer type magnetic tape (magnetic stripe) is raised from the surface of the card after the transfer, causing a level difference. However, it is embedded by heat fusion with a heating press machine, and is made to be flush with the surface of the card. Is done.

[0005] Incidentally, the state of the card surface is JISX
6301 (1979), paragraph 4.2.6, is defined as follows. "From around each of the magnetic stripes,
A surface discontinuity that may impair normal writing of information on the magnetic stripe or normal reading of information recorded on the magnetic stripe should not be provided in the 6.35 mm area. In addition, in the case of type II, 24
Do not provide a sharp part of 0.05 mm or more in the range of not less than mm. ... "

The role of a magnetic tape in a magnetic card is
It is to record the unique data possessed by the individual, and to read and write the unique data at the time of use. Therefore,
If this magnetic tape is not flush with the card surface,
The edge of the magnetic tape may be damaged or lost when the card is carried or when repeatedly used by a reader / writer, which may result in an unusable magnetic card regardless of the proper use. . For this reason, it is also a condition that the card material has physical properties such that the surface of the card and the surface of the magnetic tape are flush with each other when the magnetic tape is processed.

On the other hand, a disadvantage of the physical properties of polyvinyl chloride resin generally used as a card material up to now is that heat resistance is low. In general, polyvinyl chloride resin is softened and deformed at about 60 ° C., and thus is considered to be unsuitable for applications in a high-temperature region, for example, home electric appliances and in-vehicle applications. Furthermore, disposal problems and PVC removal
From the flow of activities, card materials other than polyvinyl chloride resin are required.

Therefore, there is a idea to use a halogen-free thermoplastic resin such as a polyethylene resin, a polypropylene resin, a polyester resin, a polycarbonate resin, and a polyacryl resin as a card material. These resins can be used alone to make a card like polyvinyl chloride resin, but the physical properties of the card, especially JI
Since the specified value specified for the card in the S standard is inferior to polyvinyl chloride resin, a card material having physical properties meeting the standard is required. In addition, when a plastic material in consideration of heat resistance, for example, polycarbonate is used for the card material, when the card is embossed, the periphery of the embossed portion is also pulled and deformed by the deformation of the embossed portion, and the card is curled. Had.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and does not cause deformation of the card shape or material even when used or stored at a high temperature. An object of the present invention is to propose a card which does not generate curl during processing, has no problem of hydrogen chloride or dioxin when incinerated after use, and also considers disposal processing.

[0010] The present invention has been made to achieve the above object, and the invention according to claim 1 is to provide an amorphous polyethylene terephthalate on at least one surface of a sheet layer mainly composed of the amorphous polyethylene terephthalate. And a heat-resistant sheet layer made of polycarbonate and / or polyarylate having high heat resistance, which is characterized by having high heat resistance that does not show deformation at 90 ° C. or more in a 45 ° standing deformation test.

The invention described in claim 2 is the first invention.
The card according to any one of claims 1 to 6, wherein a recording layer comprising at least one of a magnetic recording layer, an IC module, and a reversible thermosensitive recording layer is formed on a base material in which a sheet layer mainly composed of the amorphous polyethylene terephthalate and the heat-resistant sheet layer are laminated. It is characterized by having means.

Further, according to a third aspect of the present invention, in the card according to the first aspect, the sheet layer mainly composed of amorphous polyethylene terephthalate comprises terephthalic acid, cyclohexanedimethanol and ethylene glycol. A copolymer, or a polymer alloy of the copolymer and the polycarbonate, or a polymer alloy of the copolymer and the polyarylate, or a polymer alloy of the copolymer and the polycarbonate and the polyarylate. .

Further, according to a fourth aspect of the present invention, in the card according to the first aspect, the sheet layer mainly composed of amorphous polyethylene terephthalate is a copolymer of terephthalic acid and isophthalic acid, or It is a polymer alloy of the copolymer and the polycarbonate, a polymer alloy of the copolymer and the polyarylate, or a polymer alloy of the copolymer and the polycarbonate and the polyarylate.

Further, according to a fifth aspect of the present invention, in the card according to the first aspect, the sheet layer mainly composed of amorphous polyethylene terephthalate has a glass transition temperature of 80 ° C. or more. And

Further, according to the present invention, in the card according to the first aspect, the sheet layer mainly composed of the amorphous polyethylene terephthalate and the heat-resistant sheet layer are each formed by an extrusion method or a calender roll method. It is characterized by being made into a sheet.

[0016]

Embodiments of the present invention will be described below. FIG. 1 is a schematic sectional explanatory view of a card showing one embodiment of the present invention. The card according to the present invention is basically a heat-resistant sheet having high heat resistance composed of amorphous polyethylene terephthalate and polycarbonate and / or polyarylate on at least one surface of a sheet layer mainly composed of amorphous polyethylene terephthalate. The layers are laminated and have high heat resistance that does not show deformation at 90 ° C. or higher during the 45 ° lean test. Here, the 45 ° leaning deformation test is performed by standing the card under test in a 90 ° C. temperature atmosphere at 45 ° for 6 hours,
Further, the method is a method of testing the degree of deformation by measuring the dimensions and the like of the card when left at room temperature for one hour, and “high heat resistance that does not show deformation at 90 ° C. or more” means that the card tested by the above test The status is ISO / IEC781
It refers to heat resistance that satisfies the physical properties specified by 0.

The card 1 shown in FIG. 1 has a high heat resistance comprising amorphous polyethylene terephthalate and polycarbonate and / or polyarylate on each surface of a sheet layer 2 mainly composed of amorphous polyethylene terephthalate. Heat-resistant sheet layers 3 and 4 are laminated.

The sheet layer 2 mainly composed of amorphous polyethylene terephthalate is made of polyethylene terephthalate, a polymer alloy of polyethylene terephthalate and polycarbonate, a polymer alloy of polyethylene terephthalate and polyarylate, or a mixture of polyethylene terephthalate and polycarbonate and polycarbonate. It consists of a polymer alloy with arylate.

Polyethylene terephthalate is produced, for example, by copolymerizing ethylene glycol and cyclohexanedimethanol with terephthalic acid. Further, by changing the mixing ratio of ethylene glycol and cyclohexanedimethanol, it becomes possible to control the crystallinity and the glass transition temperature. Further, it can be produced by copolymerizing terephthalic acid and isophthalic acid.

On the other hand, the heat-resistant sheet layers 3, 4 in the present invention
Is a highly heat-resistant sheet layer made of amorphous polyethylene terephthalate and polycarbonate and / or polyarylate. Among these, polyarylate is a polymer having a strain recovery characteristic in which bending recovery loss (hysteresis loss) is small and its characteristics are not lost even when the strain rate increases. By selecting this as one of the constituent materials of the heat-resistant sheet and combining it as described above, it is possible to provide, among various characteristics required for the card material, particularly excellent heat resistance without impairing the embossing characteristics. Make it possible. In other words, when embossing is applied,
Although the embossed character portion remains as permanent distortion, the recovery loss around the character is small, so that the curl of the entire card due to the recovery around the character which is likely to occur after embossing is eliminated.

In the present invention, the sheet layer 2 mainly composed of amorphous polyethylene terephthalate and the heat-resistant sheet layers 3 and 4 can be formed into a sheet by an extrusion method or a calender roll method, respectively.

The card of the present invention can be produced, for example, by a melt lamination method using a heating press. The melt lamination method is a method in which a card material to be integrated is sandwiched between mirror plates that are one size larger, and then integrated by a hot melt press. In the melt lamination method, a transparent protective sheet is laminated on both sides of a printed card material. In this case, the types of the protective sheets on both sides may be different.

As the mirror plate used at this time, a nickel-chromium-plated copper plate, a stainless plate having a polished surface, an aluminum plate having a polished surface, or the like can be used. Also,
The printing on the card material can be performed by the same method as that for paper or plastic film, that is, characters or pictures can be printed by a known printing method such as an offset printing method, a screen printing method, or a gravure printing method.

After the melt lamination, the card material is peeled off from the mirror surface plate, and is punched into a card shape by a single blade or a male-female die to obtain a card base material. For example, a magnetic recording layer can be provided on the card base material. A conventionally used thermal transfer type magnetic tape can be transferred to one or both sides of the card base material, or a magnetic recording layer can be directly applied to the card base material. A method of printing the recording layer is used. Normally, after the card is formed, the embosser embosses the floating characters and then colors the characters by tipping them with a thermal transfer foil, encodes the magnetic information on the magnetic recording layer, and, in some cases, Transfer the barcode etc. to finish the card. Then, a protective layer can be provided for the purpose of improving the resistance of the character or picture printing layer to wear or the like.

[0025]

Next, the present invention will be described in detail with reference to examples of the present invention. <Example 1> First, a thickness of amorphous polyethylene terephthalate, polycarbonate and polyarylate of 10
On one surface of the transparent heat-resistant sheet layer 6 having a thickness of 0 μm, a pattern printing layer 10 having a thickness of 1 μm was provided by offset printing, and the magnetic tape 8 was further transferred. Next, the character print layer 9 was printed on one surface of the transparent heat-resistant sheet layer 7 having the same configuration as the transparent heat-resistant sheet layer 6. These transparent heat-resistant sheet layers 6 and 7 are coated with a white PETG sheet 5 having a thickness of 540 μm so that the surface on which the pattern printing layer 10 and the character printing layer 9 are printed faces outward.
(Mitsubishi Plastics Co., Ltd., Diafix PG-WHI), and then sandwiched between stainless steel plates having a smooth surface, heat-bonded at 120 ° C. for 20 minutes, cooled, solidified, and integrated. . Subsequently, the integrated laminate was punched into a card shape to obtain a card 20 according to Example 1 having a sectional structure as shown in FIG.

Comparative Example 1 Comparative Example 1 was the same as Example 1 except that a 100 μm thick transparent PVC sheet layer (manufactured by Mitsubishi Plastics, Inc., vinyl foil) was used instead of the 100 μm thick transparent heat-resistant sheet layer. Card was obtained.

Example 2 First, PE having a thickness of 500 μm was used.
Sheet layer 11 made of alloy sheet of TG and polycarbonate (Dia Fifth PG-WH manufactured by Mitsubishi Plastics, Inc.)
T) The pattern print layer 14 is formed to a thickness of 3 by a screen printing method.
It was provided in μm. Next, the thickness 1 on which the magnetic tape 15 was transferred
20 μm PET and polyarylate (Unitika Ltd. U
A heat-resistant sheet layer 12 made of a polymer) and a heat-resistant sheet layer 13 made of a 120 μm-thick PET and a polyarylate (U-polymer, Unitika Ltd.) printed on the back side with a character printing layer 16 prepared. After superimposing the pattern printing layer 14 and the character printing layer 16 in contact with each other,
It was sandwiched between stainless steel plates having a smooth surface, subjected to pressure bonding and fusion at 130 ° C. for 20 minutes, and then cooled and solidified to be integrated. Finally, the integrated laminate was punched into a card shape to obtain a card 30 according to Example 2 having a sectional structure as shown in FIG.

Comparative Example 2 PETG having a thickness of 500 μm /
A card according to Comparative Example 2 was obtained under the same conditions as in Example 2 except that an ABS sheet (Styrac, manufactured by Asahi Kasei Kogyo Co., Ltd.) was used instead of the sheet layer formed of the polycarbonate alloy sheet.

Comparative Example 3 A card according to Comparative Example 3 was obtained in the same manner as in Example 1, except that the heat-resistant sheet layer (6) was made of only polycarbonate, and the other configurations were the same.

The cards of Comparative Examples 1 and 2 were the same as those of Examples 1 and 2 in terms of light resistance and chemical resistance required for the cards, but those of Examples 1 and 2 in a 90 ° C. oven. Although there was no change in the magnetic cards, those of Comparative Examples 1 and 2 were severely deformed, and were not usable as magnetic cards. In Comparative Example 3, the physical properties of the polycarbonate appeared, and when embossing was performed, the periphery of the embossed portion was also pulled and deformed. As a result, the card was greatly deformed (curled).

As described above, the cards of Comparative Examples 1 and 2 do not have heat resistance on the base material itself, and therefore have a problem that when used in a room or the like where the temperature is high, they are significantly deformed and cannot withstand use. are doing. Further, when incinerated at the time of disposal after use, there is a problem in incineration disposal that hydrogen chloride gas is generated because the vinyl chloride resin is used and the furnace is damaged. In Comparative Example 3, the above problem did not occur, but there was a problem that the periphery of the embossed portion was deformed and the card was curled. On the other hand, the magnetic cards of Examples 1 and 2 are excellent in heat resistance. For example, they are not deformed even if they are placed in a car in the middle of summer, and even if the cards are embossed. Curling does not occur without deformation due to embossing pulling other than at the part.
Furthermore, since no vinyl chloride resin is used, even if it is incinerated after being used, no hydrogen chloride gas is generated, and it can be said that the card is extremely excellent in disposability.

In this embodiment, a magnetic recording medium using a magnetic tape is used. However, instead of this, a contact type IC card, a non-contact type IC card, and a reversible thermosensitive recording medium are used. Is also good.

[0033]

As described above, since the card of the present invention has high heat resistance, it can be used without deforming the card shape in a high temperature environment, and the card does not curl due to embossing. It can replace currently used cards. Furthermore, this card does not cause problems such as generation of hydrogen chloride when used and incinerated and dioxin does not occur, and is a card in consideration of disposal processing.

[Brief description of the drawings]

FIG. 1 is a schematic sectional explanatory view of a card according to an embodiment of the present invention.

FIG. 2 is a schematic sectional explanatory view of the card according to the first embodiment of the present invention.

FIG. 3 is a schematic sectional explanatory view according to a second embodiment of the present invention.

[Explanation of symbols]

 1, 20, 30 ... card 2, 5, 11 ... sheet layer 3, 4, 6, 6, 12, 13 ... heat-resistant sheet layer 8, 15 ... magnetic recording layer 9, 16, ...・ Character print layer 10, 14 ・ ・ ・ Pattern print layer

────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. ⁷ identification mark FI theme Court Bu (reference) B42D 15/10 521 B42D 15/10 521 C08J 5/18 CFD C08J 5/18 CFD C08L 67/02 C08L 67 / 02 69/00 69/00 (72) Inventor Yasushi Oba 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. F-term (reference) 2C005 HA09 HA10 HA21 HB01 HB04 HB09 JA01 JA08 JA15 JA26 JB02 JC02 KA15 LA03 LA09 LA18 LA20 LA25 LA29 LA30 LB06 NB13 TA21 TA22 4F071 AA46 AA48 AA50 AA86 AH14 BB04 BB06 BC01 BC12 4F100 AK42A AK42B AK42C AK43A EJ43B AK43C AK45A AK45B AK45 BA03A EB45A01 BA03BA05A01 BA05A01 BA05A17BA05A02 JA12B JA12C JB07 JJ03 JJ03B JJ03C JK14 JK17 4J002 CF06W CF16X CF16Y CG00X GF00 GS01

Claims (6)

[Claims] 1. A heat-resistant sheet layer having high heat resistance comprising amorphous polyethylene terephthalate and polycarbonate and / or polyarylate is laminated on at least one surface of a sheet layer mainly comprising amorphous polyethylene terephthalate, A card having high heat resistance that does not show deformation at 90 ° C. or higher during a 45 ° leaning test. 2. An information recording means comprising at least one of a magnetic recording layer, an IC module, and a reversible thermosensitive recording layer on a substrate in which the sheet layer mainly composed of amorphous polyethylene terephthalate and the heat-resistant sheet layer are laminated. The card according to claim 1, comprising: 3. The sheet layer mainly composed of amorphous polyethylene terephthalate comprises a copolymer of terephthalic acid, cyclohexane dimethanol and ethylene glycol,
The polymer alloy of the copolymer and the polycarbonate, the polymer alloy of the copolymer and the polyarylate, or the polymer alloy of the copolymer and the polycarbonate and the polyarylate. Card. 4. The sheet layer mainly composed of amorphous polyethylene terephthalate is formed of a copolymer of terephthalic acid and isophthalic acid, a polymer alloy of the copolymer and polycarbonate, or a copolymer of the copolymer and polyarylate. 2. The card according to claim 1, wherein the card is a polymer alloy of the following: or a copolymer thereof and a polymer alloy of a polycarbonate and a polyarylate. 5. The card according to claim 1, wherein the sheet layer mainly composed of amorphous polyethylene terephthalate has a glass transition temperature of 80 ° C. or higher. 6. The card according to claim 1, wherein the sheet layer mainly composed of the amorphous copolymerized polyethylene terephthalate and the heat-resistant sheet layer are each formed into a sheet by an extrusion method or a calender roll method.