JP2660654B2 - Manufacturing method of magnetic ticket sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of magnetic ticket sheets used for shopping cards, deposit / deposit cards, tickets, coupons, betting tickets, prepaid cards such as cash vouchers, etc., and in particular, magnetic ticket sheets using paper as a support. About the method. More specifically, a plastic film is hot-melt extruded on one or both sides of a paper serving as a support to form a laminate layer, thereby preventing curling even when the environment changes, and having excellent dimensional stability. Therefore, it is an object of the present invention to provide a magnetic ticket sheet having a very good running property in a magnetic recording / reproducing apparatus. Furthermore, despite the fact that paper is used for the support in the present invention, the uniformity and surface smoothness of the magnetic recording layer are improved, and the magnetic recording characteristics are similar to those of a magnetic recording medium using a plastic film as a support. A magnetic ticket sheet exhibiting characteristics is provided.

[0002]

2. Description of the Related Art Conventionally, a method of manufacturing a magnetic ticket card of this kind is as follows.
A coated paper or a high-quality paper is used as a paper support, and a plastic paint such as a polyethylene resin is applied thereto, or a separately manufactured plastic film is adhered to the paper itself by a hot roll or an adhesive, and a magnetic recording layer is formed thereon. A magnetic paint sheet was manufactured by coating and orienting a paint for use, and providing a protective layer on the magnetic recording layer if necessary. However, in the conventional method of manufacturing a magnetic ticket sheet, since the surface of the plastic layer laminated on the paper support is not particularly treated, the surface smoothness of the plastic layer is 500 seconds using a Beck's smoothness meter. / 10 cc or more, and when a coating material for a magnetic recording layer is applied on a plastic layer or a coating material for printing and recording is applied, coating properties such as repelling and uneven coating due to poor wettability of the respective coating materials are considered. Adhesion was not sufficient. Therefore, the surface of the plastic layer is subjected to a corona discharge treatment in advance to roughen the surface, and a coating for a magnetic recording layer or a coating for print recording is applied to the surface.

[0003] However, even when subjected to the corona discharge treatment Incidentally, or applying a coating for a magnetic recording layer, poor coating property and adhesiveness can with you or applying a print recording coatings, insufficient Was. That is, when these magnetic paints and print recording paints are applied, coating defects easily occur, and there is a problem in the adhesive properties between the coating film and the plastic layer. In order to prevent the occurrence of the coating defect, it is necessary to reduce the coating speed, which causes a problem in productivity. In addition, the corona discharge treated surface deteriorates in characteristics over time or due to heating, and inherently has a risk of poor adhesion between the coating film and the plastic layer.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional situation. That is, the present invention reduces coating defects by increasing the adhesiveness between the plastic layer surface and the coating layer when coating with a magnetic recording layer coating or printing recording coating on the surface of a plastic film. It is also an object of the present invention to improve the productivity by increasing the coating speed and to improve the quality stability of the product.

[0005]

The present invention SUMMARY OF] has been made a result of intensive studies to achieve the above object, the summary is the following topics: Ride. According to the invention of claim 1, when a plastic film melted by a T-die extrusion method is extruded onto one side of a paper support and laminated to laminate the plastic on the support, the plastic film melt-extruded by the T-die extrusion method is solidified. Before the cooling, a cooling roll having a surface roughened in advance is pressed against the surface, and the smoothness of the surface of the plastic film is measured with a Beck smoothness meter at 100 sec / 1.
A method for producing a magnetic ticket sheet, comprising roughening a surface of the plastic film so as to have a thickness of 0 cc to 500 seconds / 10 cc, and then providing a magnetic recording layer on the surface of the roughened plastic film. In the invention of claim 2, the plastic film melt-extruded by the T-die extrusion method is solidified when the plastic film melted by the T-die extrusion method is extruded and laminated on both sides of the paper support by the T-die extrusion method. Before the cooling, a cooling roll having a surface roughened in advance is pressed against the surface, and the smoothness of the surface of the plastic film is measured with a Beck smoothness meter at 100 sec / 10 cc to 500 cc.
A magnetic ticket characterized in that the plastic film is roughened so as to have a speed of / 10 cc, a magnetic recording layer is provided on one surface of the roughened plastic film, and a heat-sensitive recording layer or a print recording layer is provided on the other surface. This is a sheet manufacturing method.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
The hot-melt extrusion method of plastics by the T-die extrusion method in the present invention is known as a method for producing a laminate with another film or sheet, and the present invention applies this technique to a paper as a support. This is to produce a laminate with a plastic film. That is, if the T-die extrusion method is described with reference to FIG. 1, the paper support 1 is sent to the outlet of the T-die extruder 2 so as to be in contact with the surface of the molten plastic film 3 extruded from the T-die extruder 2. And sent between the two cooling rolls 5 and 6. This roll uses a cooling roll 6 having a normal smooth surface on one paper side, a cooling roll 5 having a roughened surface on the plastic side, and nips between the rolls when passing between the two. The paper support 1 and the plastic film 3 are pressed and cooled to obtain a laminated paper 4.

FIG. 1 described the case where a plastic film is laminated on one side of a paper support. However, when a plastic film is laminated on both sides of a paper support, a T-die extruder and a roll pair are continuously arranged. Alternatively, two plastic films to be melt-extruded by a T-die extruder are extruded in parallel, a paper support is fed between them, and a pair of cooling rolls whose surfaces are roughened is sandwiched to obtain a laminated paper. Can be. The smoothness of the surface of the plastic film of the laminated paper obtained by the above method is 100 seconds / 10 cc or more using a Beck's smoothness meter.
It is controlled to be 500 seconds / 10cc.
In the present invention, the surface of the roughened plastic layer may be further subjected to corona discharge treatment.

Next, various materials used in the present invention will be described in detail. As the plastic for T-die melt extrusion used in the present invention, polyolefin resins such as polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene propylene copolymer, and polypropylene are preferable, but are not limited thereto. I can't. The thickness of the extruded film is 5 to 20 μm. The magnetic recording layer formed on the surface of the plastic film, the magnetic powder is polyester resin, vinyl chloride resin, polyurethane resin,
It is formed by applying or printing a paint or ink uniformly dispersed in a binder such as a styrene-butadiene copolymer resin. As magnetic powder, γ-Fe ₂ O ₃ ,
It is preferable to use a high magnetic force material having a coercive force of 1500 to 5000 Oe, such as barium ferrite and strontium ferrite.

In the present invention, the heat-sensitive recording layer constituting the magnetic ticket sheet is formed by combining a colorless or light-colored leuco dye, an acidic substance and a binder described below. Leuco dye: crystal violet lactone, 3-indolino-3
-P-dimethylaminophenyl-6-dimethylaminophthalide, 3-diethylamino-7-chlorofluoran, 3-diethylamino-5-methyl-7-t-butylfluoran, 3-diethylamino-6-methyl-7- Anilinofluoran, 3-diethylamino-6-methyl-
7-p-butylanilinofluoran, 3-cyclohexylamino-6-methyl-7-xylidinofluoran, 3
-Pyrrolidino-6-methyl-7-anilinofluoran,
3-piperidino-6-methyl-7-preparative Luigi Bruno fluoran, 3-pyrrolidino -6-methyl-7- (p-torr Lee di <br/> Roh) fluoran, 3-piperidino-6-methyl-7-Ani Linofluoran, 3-N-methylcyclohexylaminofluoran, and 3-diethylamino-7- (n-trifluoromethylanilino) fluoran.

Acidic substances: 4-phenylphenol, 4-t-butylphenol,
4-hydroxyacetophenone, α-naphthol, β-
Naphthol, 2,2'-dihydroxydiphenyl, 2,
2'-methylenebis (4-chlorophenol), 2,
2'-methylenebis (4-methyl-6-t-butylphenol), methyl-4-hydroxybenzoate, benzyl-4-hydroxybenzoate, 4,4'-isopropylidenebis (2-methylphenol), 4,4'-
Ethylene bis (2-methylphenol), 1,1'-bis (4'-hydroxyphenyl), cyclohexane,
4,4'-isopropylidene diphenol, 4,4'-
Cyclohexylidenebis (2-isopropylphenol), novolak type phenol resin, 3-5-di-α-
Methylbenzyl monkey Chi le acid, 4-hydroxybenzoic acid esters.

Binders: casein, gelatin, styrene
Maleic anhydride copolymer, polyvinyl alcohol, modified polyvinyl alcohol, starch, modified starch, isobutylene-maleic anhydride copolymer, diisobutylene-maleic anhydride copolymer, polyacrylamide, modified polyacrylamide, carboxymethylcellulose, Polyvinyl acetate, polystyrene, polyacrylate, vinyl chloride-vinyl acetate copolymer, styrene butadiene copolymer. Further, if necessary, other additives such as a fatty acid amide and a white pigment are added to the heat-sensitive recording layer formed by the leuco dye, the acidic substance, and the binder. It should be noted that a thermosensitive material other than the leuco dye coloring system, such as a diazo coloring material, can be applied to the thermosensitive recording layer in the present invention. Further, the magnetic recording layer constituting the magnetic ticket sheet of the present invention has a purpose of improving the smoothness and abrasion resistance of the layer, and the heat-sensitive recording layer has an improved storage stability and chemical resistance. For the purpose, a protective layer described below is provided on the recording layer as needed.

The materials used for the protective layer of the present invention include various water-soluble resins or resins soluble in organic solvents. Examples of the water-soluble resin in this case include polyvinyl alcohol, polyvinyl pyrrolidone, modified polyvinyl alcohol, polyacrylamide, modified polyacrylamide, carboxymethyl cellulose, hydroxyethyl cellulose, and the like. On the other hand, as the organic solvent-soluble resin, nitrocellulose, polyurethane, polyester, vinyl chloride / vinyl acetate copolymer, acrylic resin and the like can be applied. Further, for example, a fatty acid metal salt, a wax, a white pigment, and a waterproofing agent are added to the protective layer as needed. In the present invention, when the protective layer is provided on the heat-sensitive recording layer, it is preferably a water-soluble resin in order to prevent unnecessary coloring of the leuco dye.

Next, the print recording layer referred to in the present invention is for printing, for example, a precautionary note or a picture pattern for producing an aesthetic appearance necessary for a magnetic ticket sheet, and a pigment, a polymer binder and other additives. Agent. Examples of pigments include silica, clay, mica, talc, kaolin, diatomaceous earth, calcium carbonate, calcium sulfate, barium sulfate, aluminum silicate, synthetic zeolite, alumina,
Conventionally used filling materials such as zinc oxide, lithopone, and satin white, and organic or inorganic coloring pigments are exemplified, but not particularly limited thereto. Among these, silica having excellent ink absorbency can be particularly preferably used.

Examples of the polymer binder include acrylic resins, polyester resins, polyurethane resins, styrene-butadiene copolymer resins, acrylonitrile-
Butadiene copolymer resin, polyvinyl alcohol resin, water-soluble polyvinyl acetal resin, polyvinyl butyral resin, other vinyl resins, amide resin, oxidized starch, casein, polyethylene oxide, polyvinyl pyrrolidone, silicone resin, rosin-modified maleic acid Resins, rosin-modified phenol resins, alkyd resins, cumarone-indene resins, etc., can be used alone or in combination of two or more.
Among these, polyvinyl alcohol-based resins, water-soluble polyvinyl acetal resins, and polyvinylpyrrolidone are particularly preferably used in view of the blendability with crystalline cellulose and the sharpness of the recorded image. Further, as other additives, water-resistant agents such as melamine formaldehyde resin, urea formaldehyde resin, glyoxal, and zirconium ammonium carbonate can be blended to improve water resistance and prevent ink bleeding. Various additives such as a dispersant, a fluorescent dye, a pH adjuster, a defoamer, a lubricant, and a preservative are blended into the print recording layer in order to further enhance the productivity, recording characteristics, storage stability, etc. of the sheet. You can also.

[0015]

Next, the present invention will be described in detail with reference to examples. still,
All parts are parts by weight. Example 1 Polyethylene (manufactured by Showa Denko KK, trade name: Shorex L133K) was T-die extruded on one side of high-quality paper having a thickness of 190 μm by the method shown in FIG. 1 to form a plastic film layer having a thickness of 13 μm. At that time, before the plastic film melt-extruded from the T-die is solidified, the surface is subjected to a maximum height (Rmax) specified in JIS B0601.
A cooling roll roughened to 6 μm was pressed against the surface of the plastic film layer and laminated. As a result, the Bekk smoothness of the surface of the plastic film was 300 seconds / 1.
It was 0 cc. Next, a coating material for a magnetic recording layer having the following composition was applied at a coating speed of 50 m / min on the surface of the plastic film to prepare a magnetic ticket sheet according to the present invention.・ 100 parts of barium ferrite (coercivity 2,750 Oe) ・ 40 parts of polyester resin (Vylon 200 manufactured by Toyobo Co., Ltd.) ・ 5 parts of carbon black ・ 2 parts of lecithin ・ 330 parts of methyl ethyl ketone

As a result, the coating property of the coating material for the magnetic recording layer on the surface of the plastic film is good, there is no unevenness of coating such as occurrence of repelling, and the film strength is evaluated by the surface strength wax method specified in JIS P8129. It was confirmed that the adhesiveness to the magnetic recording layer was also good. Further, as a result of recording and reproducing at a recording density of 100 CPI using a magnetic recording / reproducing apparatus for a magnetic ticket, it was confirmed that there was no problem at all.

Example 2 A magnetic ticket sheet according to the present invention was prepared in the same manner as in Example 1 except that polypropylene (trade name: F8090, manufactured by Chisso Corporation) was used as a plastic material to be supplied to the T-die extruder. As a result, the coatability of the coating material for the magnetic recording layer was not a problem at all, and the adhesion between the plastic film and the surface of the magnetic recording layer was good even in an adhesion test by the surface strength wax method specified in JIS P8129. Was confirmed. Further, as a result of recording and reproducing at a recording density of 100 CPI using a magnetic recording / reproducing apparatus for a magnetic ticket, it was confirmed that there was no problem at all.

EXAMPLE 3 Polyethylene (Showa Denko Co., Ltd., trade name: Shorex L133K) was T-die extruded on both sides of a 190 μm-thick high-quality paper twice using the T-die extruder shown in FIG. 1 to a thickness of 13 μm. Was formed on both sides of the support. The surface roughness of the cooling roll used at that time was JIS B
The maximum height (Rmax) specified in 0601 was 7 μm. As a result, the Bekk smoothness of the plastic layers on both sides was 350 seconds / 10 cc. Next, the coating material for the heat-sensitive recording layer used in Example 1 was applied on the surface of one plastic layer at 50 m / min, and the coating material for the leuco dye-type heat-sensitive recording layer having the following composition was applied on the other surface. Thus, a magnetic ticket sheet according to the present invention was obtained.

[Coating composition for thermal recording] [Solution A] 3-N-methylcyclohexylamino-6-methyl-7-anilinofluoran 10 parts Polyvinyl alcohol (10% solution) 10 parts ・ Water 10 parts [Solution B] ・ Bisphenol A 20 parts ・ Calcium carbonate 20 parts ・ Polyvinyl alcohol (10% aqueous solution) 10 parts ・ Water 50 parts Solution A and Solution B were dispersed in a ball mill for 24 hours, and then a leuco heat-sensitive paint was prepared according to the following formulation.・ Solution A 5 parts ・ Solution B 40 parts ・ Stearic acid amide (20% suspension) 5 parts ・ Isobutylene-maleic anhydride copolymer 15 parts As a result, magnetic The coating properties of the recording paint and the heat-sensitive recording layer paint were extremely good without occurrence of repelling or the like. Further, the obtained magnetic ticket sheet was subjected to magnetic recording for a magnetic ticket, a recording / reproducing test using a reproducing apparatus, and 6 dots / mm.
Thermal recording was performed using a printing apparatus having a thermal printing head of No. 5, and it was confirmed that all had sufficient practical characteristics.

Comparative Example 1 A magnetic ticket sheet for comparison was prepared in the same manner as in Example 1 except that the two cooling rolls of the T-die extruder in Example 1 were both mirror-finished. In this case, the Bekk smoothness of the surface of the plastic layer was 650 seconds /
It was 10 cc. As a result, repelling due to uneven coating occurred on the magnetic recording layer, and it was confirmed that the magnetic recording layer had a problem in practical use as a magnetic ticket sheet.

As described above, according to the production method of the present invention, coating properties are improved in magnetic coating and printing layer coating, and there are no coating defects even if the coating speed is high, and this made it possible to obtain good magnetic ticket sheet was confirmed. In addition, the magnetic characteristics and printing characteristics of the magnetic ticket sheet thus obtained were practically no problem at all.

[0022]

As described above, according to the method for manufacturing a magnetic ticket sheet of the present invention, a paper support and a plastic film
Lamination is performed by die extrusion method, and before the plastic is cooled and solidified, it is pressed with a roughened cooling roll.When a magnetic recording layer, a heat-sensitive recording layer, or a print recording layer is provided on this, good interlayer adhesion is obtained. A magnetic ticket sheet free from engineering defects can be manufactured with high production efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a T-die extrusion method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper support 2 T-die extruder 3 Molten plastic film 4 Laminated paper 5 Cooling roll with roughened surface 6 Cooling roll with smooth surface

Claims (2)

(57) [Claims] 1. A plastic film melted and extruded by a T-die extrusion method is solidified when a plastic film melted by a T-die extrusion method is extruded and laminated on one side of a paper support by a T-die extrusion method. Before, a cooling roll whose surface has been previously roughened is pressed against the surface, and the smoothness of the surface of the plastic film is measured with a Beck smoothness meter from 100 seconds / 10 cc to 500 seconds / 10 cc.
A magnetic recording layer is provided on the surface of the roughened plastic film. 2. A plastic film melt-extruded by a T-die extrusion method is solidified when a plastic film melted by a T-die extrusion method is extruded and laminated on both sides of a paper support by a T-die extrusion method. Before, a cooling roll whose surface has been previously roughened is pressed against the surface, and the smoothness of the surface of the plastic film is measured with a Beck smoothness meter from 100 seconds / 10 cc to 500 seconds / 10 cc.
Manufacturing a magnetic ticket sheet characterized in that a magnetic recording layer is provided on one surface of the roughened plastic film and a heat-sensitive recording layer or a print recording layer is provided on the other surface. Method.