JPS6351109B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of printing on food surfaces using edible inks.

Traditionally, in the food industry, in order to give food freshness and beauty, simple patterns were formed on the surface of food using a branding iron, or food coloring was added.However, in recent years, with the diversification of dietary habits, As a result, people began to prefer foods with more complex patterns and colorful colors, and one way to achieve this was to print on the surface of foods.

Stamp printing and screen printing are mainly used as methods for printing on food surfaces due to the ease of equipment, but screen printing is the most suitable method for printing complex patterns with high precision.

Edible screen printing inks are conventionally known as water-based, oil-based, and emulsion types, but when using these printing inks for multicolor printing, especially on food surfaces with non-absorbent surfaces, it is usually difficult to If we try to apply the possible printing method, that is, a series of processes in which the printing ink is dried after printing and then printed with a second printing ink, the food will deteriorate or deform due to the heat during drying, which will seriously reduce the product value. I found out that.

Next, drying without heat was considered, but in this case, the production speed was greatly limited and the production cost was high. When trying to speed up the process, a new problem arose: the screen version was cut off.

In view of the above-mentioned problems, the inventors of the present invention have developed a method to prevent the printing ink of the printed image area printed on the surface of the base material from transferring to the next screen plate during multicolor printing using the screen printing method. The present invention was arrived at while considering means to do so.

That is, the first invention prints a desired pattern on the surface of an edible base material using edible ink, and before the edible ink dries or is absorbed by the base material, edible powder is applied to the surface to be printed. The present invention relates to a printing method characterized by scattering and adhering to the printed image area and setting. The second invention is a multicolor printing method comprising a plurality of printing steps selected from one or more of the above steps (A) and a step (B) of printing with an edible ink that exhibits a different color from the above. Regarding.

The edible ink according to the present invention includes water-based ink in which food coloring is dissolved or dispersed in water and a thickener or edible resin is added to adjust the viscosity to a level that allows printing, and food coloring can be used for printing. There are oil-based inks that are dissolved or dispersed in edible fats and oils having a suitable viscosity, and emulsion inks that are made by emulsifying edible pigments, edible fats and oils, and water using an edible emulsifier.

As a method for printing the above-mentioned edible ink on the surface of the edible substrate, other printing methods such as a flexo printing method and an offset printing method may be used in addition to the screen printing method.

The food coloring used in the edible ink can be appropriately selected from conventionally known synthetic food colorings and natural food colorings. As a synthetic food coloring,
For example, Food Red No. 2, Food Red No. 3, Food Yellow No. 4
No., food yellow No. 5, food green No. 3, food blue No. 1
No. 2, Food Blue No. 2, and pigments made from aluminum lakes of these can be mentioned. Examples of natural food colors include caramel color, gardenia color, monascus color, annatto color, beetroot color, anthocyanin color, publica color,
Examples include cochineal dye, copper chlorophyll and its sodium salt.

It is also possible to add solid edible oils and fats, or water-soluble polymeric substances such as gum arabic, sodium salt of carboxymethylcellulose, methylcellulose, and sodium alginate as binder components of the edible ink.

In the present invention, edible powders include alpha-alpharated starch, wheat starch, wheat flour, corn starch, starch pastes such as dextrin, sugar alcohols such as sucrose, sorbitol, and mannite, glucose, sucrose, and lactose. sugars such as gelatin, proteins such as albumin, vegetable or microbial polysaccharide powder, natural gums such as gum arabic, carboxymethylcellulose sodium salt, methylcellulose, sodium alginate, propylene glycol alginate ester, cellulose calcium glycolate, cellulose sodium glycolate,
Edible polymer substance powders such as starch sodium phosphate, sodium polyacrylate, and crystalline cellulose; inorganic powders such as salt, calcium carbonate, calcium sulfate, and alum; and other food material powders such as thiokolate powder and cheese powder; Edible wax may also be used.

Further, in the present invention, it is also possible to color the printed image area together with the setting of the printing ink by using the above-mentioned edible powder that has been previously colored with an edible coloring agent.

The particle size of the edible powder does not need to be particularly limited, and not only powder but also granule may be used as long as it can achieve the purpose of the present invention, but preferably
A powder of 60 mesh or more is used.

There are several ways to spread edible powder after printing on the surface of an edible substrate, such as by vibrating the powder on a sieve, or using a brush, but of course it is also possible to spread it by hand. It may also be sprayed by.

After scattering the edible powder, it is preferable for the next process to remove unnecessary powder from the edible substrate, and various methods can be considered for this purpose, such as a method of suctioning with air, a method of blowing air, etc. How to put it on,
There are methods to clean it with a brush.

Examples of foods to which the present invention can be applied include biscuits, kutsky, crackers, chewing gum, caramel, and chocolate.

Examples will be described below. In the examples, parts indicate parts by weight.

Example 1 93 parts of soft wheat flour, 21 parts of sugar, 16 parts of margarine,
O/O made by emulsifying 54 parts of salad oil in an aqueous solution containing 40 parts of caramel color and 5 parts of water on a hard biscuit dough consisting of 0.5 parts of salt, 0.5 parts of sodium chloride, and 18 parts of water.
The pattern was screen printed using W-type emulsion ink and a 165 mesh screen plate.

Next, strong wheat flour was thoroughly sprinkled on the printed surface, and unnecessary flour was removed with a brush and printing ink was set.

Next, an O/W type emulsion ink made by emulsifying 54 parts of salad oil in an aqueous solution containing 20 parts of Monascus dye and 25 parts of a 70% D-sorbit aqueous solution was used to print different patterns on the above surface in the same manner, and the ink was set. did.

Next, different patterns were printed on the above surface using an O/W type emulsion ink prepared by emulsifying 54 parts of salad oil in an aqueous solution containing 20 parts of gardenia pigment and 25 parts of a 70% D-sorbit solution.

The hard biscuit dough with multicolor printing was baked in an oven at 180° C. for 7 minutes to obtain a product.

Example 2 A pattern was screen printed on the surface of the thiokolate using an oil-based white ink consisting of 60 parts of semi-solid vegetable oil and 40 parts of calcium carbonate.

Next, after scattering calcium carbonate powder, unnecessary powder was removed with a brush to obtain a chiyokolate with a raised pattern.

Example 3 40 parts of caramel, 70% D- on the surface of chewing gum
10 parts of sorbitol aqueous solution, 5 parts of propylene glycol
The pattern was screen printed using water-based ink consisting of 45 parts of starch syrup.

Next, cornstarch/powdered sugar 1/1 (weight ratio)
After sufficiently spreading the mixture, unnecessary powder was removed with a brush and printing ink was set.

Next, 15 parts of Monascus dye, 10 parts of 70% D-sorbitol aqueous solution, 5 parts of propylene glycol, and starch syrup.
Different designs were printed on the surface using 70 copies of water-based ink in the same manner as above, and the printing ink was set.

Next, 15 parts of gardenia pigment, 10 parts of 70% D-sorbitol aqueous solution, 5 parts of propylene glycol, and 70 parts of starch syrup.
After printing different patterns on the surface using the same procedure as described above, a water-based ink consisting of 300 mm was used to obtain chewing gum with multicolor printing.

Claims (1)

[Scope of Claims] 1. A desired pattern is printed on the surface of an edible substrate using edible ink, and an edible powder is applied to the printed material before the edible ink dries or is absorbed by the substrate. A printing method characterized by scattering on the surface and allowing it to adhere to the print area and setting. 2. The printing method according to claim 1, wherein the edible powder is a powder having a hydrophilic surface. 3. Print a desired pattern on the surface of an edible substrate using edible ink, and before the edible ink dries or is absorbed by the substrate, print by scattering edible powder on the surface to be printed. A multi-color product that includes a plurality of printing steps selected from one or more steps (A) of adhering and setting the ink to the printed area, and (B) a step of printing with an edible ink that exhibits a different color from the above. Printing method. 4. The printing method according to claim 3, wherein the edible powder is a powder having a hydrophilic surface.