JPS6042265B2 - surface treatment agent - Google Patents

Description

[Detailed description of the invention] The present invention relates to a substrate surface treatment agent for cards.

Among the so-called cards, playback cards (playing cards) are a world-famous gaming tool, and are loved by many people in the United States and elsewhere due to their versatile game methods.
It has also been widely used in magic, fortune-telling, etc. Furthermore, recently, the demand for various cards such as bank cards, credit cards, calendar cards, seal cards, and picture cards has been rapidly increasing.

The base materials for these cards include paper and plastics, and waxes such as solid paraffin, carnauba wax, fatty acid amide, and microcrystal wax are usually used as a coating agent on the surface as a lubricant. , applied in addition to varnishes and lacquers.
However, these have many problems in practical use and cannot be said to be satisfactory. In other words, general waxes other than fatty acid amides are difficult to dissolve in solvents, and it is necessary to apply the mixed lacquer or varnish while melting it by heating.Additionally, the wax precipitates immediately when cooled, so the coating equipment itself is difficult to dissolve. It needs to be heated.

Furthermore, although wax is deposited on the resulting surface and a sliding effect is produced, the wax becomes powdery due to several frictions and is easily peeled off, and is also easily contaminated. On the other hand, fatty acid amides have almost no slipping effect by themselves and must be used in combination with the other waxes mentioned above. As a result of various studies on the slippage required for the surface of cards, the inventor of the present invention found that
By using a coating agent, ie, a lacquer or varnish mixed with sucrose higher fatty acid ester, a groundbreaking and unique slip on the surface of cards, that is, sticky slip (hereinafter referred to as "Nume January").

), and arrived at the present invention. That is, the present invention resides in a surface treatment agent for card substrates, which is prepared by blending a sucrose higher fatty acid ester with a lacquer or varnish.

The present invention will be explained in detail below.

The sucrose higher fatty acid ester used in the present invention is
Sucrose and higher fatty acids usually having 6 to 2 carbon atoms, such as purinic acid, caprylic acid, launorilic acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, or two types derived from various plants and animals. Esters with oils and fats, etc., which are mixtures of the above fatty acids, can be selected from a wide range of types, but those containing di-, triester as the main component are most preferred.

In addition, the HLB value of sucrose higher fatty acid ester is usually 1 to 9.
In particular, those having a number of 3 to 7, and most preferably 4 to 6, are preferred in view of the resulting sliminess.

If it exceeds 9, moisture may be absorbed and the surface may become cloudy, which is not very preferable.

On the other hand, the lacquer or varnish in the present invention is used for surface coating of substrates for cards, and refers to the following. First, the lacquer in the present invention is a cellulose derivative (usually nitrocellulose).
For example, a mixture of nitrocellulose and alkyd resin, nitrocellulose and acrylic resin, nitrocellulose and low polymerized vinyl chloride-vinyl acetate copolymer, and natural resin, maleic acid resin, or phenol-modified resin. etc., and further dissolved in a solvent such as esters, ketones, glycol esters, etc. In addition, varnishes do not use nitrocellulose, but instead are solutions of synthetic resins soluble in solvents such as vinyl chloride-vinyl acetate copolymers, acrylic copolymers, butyral resins, chlorinated rubber, and chlorinated polyolefins, or varnishes made of silica, copal, etc. , a solution of natural resins such as Dammaru.

As the solvent, alcohols, ketones, esters, etc. are usually used. Furthermore, the base material for cards in the present invention includes paper or plastic sheets,
Specifically, paper, vinyl chloride sheet, vinyl chloride, A
Examples include BS resin sheets, cellulose acetate sheets, and so-called synthetic papers made from polyolefin and polystyrene. These base materials for cards may be plain or laminated, and it does not matter whether the surface is printed or not. In the present invention, the blending ratio of sucrose higher fatty acid ester and lacquer or varnish is usually 0.5 to W parts, preferably 3 to 5 parts per 1 (4) parts (by weight) of the resin in the lacquer or varnish. be.

If the amount is less than 50.5 parts, the effect of the present invention cannot be fully achieved, and if it exceeds 1 part, it is not economical and may cause so-called "embossed" parts, which is undesirable. This is usually done by mixing a predetermined amount of sucrose higher fatty acid ester when preparing a lacquer or varnish, and no particular heating is required.

That is, resins are placed in a container equipped with a stirrer, esters, toluene, alcohols, and other solvents are added and stirred.
During the preparation of a lacquer or varnish, after the resin is completely dissolved, sucrose higher fatty acid ester is added and stirred for a while.

In this case, the resin and sucrose higher fatty acid ester may be simultaneously dissolved in the solvent. Alternatively, a method may be adopted in which the sucrose higher fatty acid ester is dissolved in advance in a solvent at a high concentration and a predetermined amount thereof is added to the lacquer or varnish.
The surface treatment agent of the present invention thus obtained is coated onto a substrate for cards using a coating machine such as a roll coater, a gravure printer, or an airless sprayer.

When the base material is paper, the drying temperature is usually 50-80C using hot air or a far-infrared heater, while for plastic sheets, the drying temperature is usually 40-80C using hot air to avoid deformation due to heat. It is preferable to carry out the heating at about 60°C. The base material for cards thus obtained is then cut into a predetermined size to become product cards. The surface treatment agent of the present invention may be used in combination with various conventionally known additives, ie, lubricants such as chlorinated paraffin and silica gel.

The surface treatment agent of the present invention brings about the following effects when applied to a substrate for cards.

(1) The slime effect is significant and lasts for a long time.
Its effect is never lost.

For example, cards using a coating solution containing only paraffin wax as a lubricant lose their sliminess after a few days, but cards using the surface treatment agent of the present invention do not remain slimy even after long-term use. sex does not decrease.

(2) The surface of cards coated with the surface treatment agent of the present invention is stable, does not cause blocking at all, and does not change due to temperature differences between winter and summer.

Cards made with general waxes tend to have a surface condition that changes with changes in temperature, and may cause blocking when the temperature rises in show windows or warehouses.

(3) The sucrose higher fatty acid ester used in the present invention is a food additive and has self-cleaning and water-absorbing properties, so the cards obtained are safe, have a surface that is hard to stain, and is antistatic. have an effect. In other words, when the surface treatment agent of the present invention is used as a base material for cards, the resulting cards become groundbreaking products with excellent sliminess and surface stability, and are particularly suitable for playing cards as cards. It is suitable for cases where

Hereinafter, the present invention will be explained in more detail with reference to Examples.

In addition, in the examples, "part" indicates [part by weight].
Example 1 Acrylic copolymer (to) parts (methyl methacrylate, ethyl acrylate, 9:1 (molar ratio)) 1.5 parts of sucrose higher fatty acid ester (sucrose
Co., Ltd. S-770) Toluene
5α■ Cellosolve acetate 18.5
3000 r. into a homomixer. p. m. in,
The mixture was stirred for about 2 hours and completely dissolved to obtain a surface treatment agent.

Example 2 Algite resin 1? Maleic acid resin 5 parts Nitrocellulose
25 parts were added to a mixed solution of 35 parts of ethyl acetate and 5 parts of methyl isobutyl ketone using a homomixer.
Dissolve with high speed stirring 5 (3000r'.P.m.) for 5 minutes,
Next, 1.7 parts of sucrose higher fatty acid ester S-570 (Ryoto Co., Ltd.) dissolved in 16.3 parts of toluene was added.
A surface treatment agent was obtained by dissolving the mixture with low speed stirring (40 [.P.m.)].

Example 3 Chloride comb Nod part Chlorinated polyolefin W part Epoxy resin
1 part "Epicoat 828" (manufactured by Shell, USA), toluene (23IfI), 33 J parts of ethyl acetate were mixed, and the mixture was stirred at high speed for 30 minutes using a homomixer (3000 r'.P.m).
．． ) and dissolved.

Next, 2.1 parts of sucrose higher fatty acid ester S-370 (manufactured by Ryoto Co., Ltd.) was dissolved in 1 part of toluene with stirring and added to the solution, mixed to form a surface treatment agent. I got it. Reference Example 1 2 parts of toluene-ethyl acetate (1:1) was added to w parts of the surface treatment agent obtained in Example 2 to dilute it, and the viscosity was adjusted to about 1 hoe using a food cup No. 4. Using a three-roll coating machine manufactured by Seisakusho, both sides of the printed playing card card base material were coated with the adjustment liquid.

Furthermore, the obtained base material was heated to about 60% by far infrared heater.
It was dried for 1 to 2 hours at ℃ and then cut to obtain finished playing cards.

This playing card had a suitable slimy feel, and there was no change in the surface condition even after using it for about 3 months. Reference Example 2 1 part of toluene was added to w part of the surface treatment agent obtained in Example 1 to dilute it, and the viscosity was adjusted to about 2 parts per volume using a food cup No. 4, and then applied to a 15-mesh single plate gravure printing machine. Then, both sides of a bank card base material (ABS resin vinyl monochloride) were coated with the adjustment solution.

Furthermore, the obtained base material was heated to about 40°C using an infrared heater.
The product was dried for 2 hours and then cut to obtain a product bank card.

Claims (1)

[Claims] 1. A card base material surface treatment agent comprising a lacquer or varnish mixed with a sucrose higher fatty acid ester.