DE905854C - Process and printing form for producing multi-color printing - Google Patents

Description

It is known to produce multicolor printing in a single printing process with the aid of a printing forme, in their mass the dyes or the like for printing the desired multicolor pattern in accordance with the pattern Distribution are included. The colors are transferred to the item to be printed (Textile, paper, plastic, etc.) by dissolving with a suitable liquid, with the example the material to be brought into contact with the printing form is moistened.

The invention has the purpose of producing waterproof multicolored patterns by this method. For this purpose, a substance or mixture of substances is incorporated into the mass containing the dyes or the like, which makes the printed colors waterproof after drying. The selection and the Amounts of added substances are determined by the requirements for the printed pattern resistance to heat, light, washing, cleaning, rubbing, scratching and wrinkling as well as with regard to the depth of penetration of the ink into the printed material or the thickness of the ink layer determined on this.

The ink mass can vary as required. It can be hard or plastic and some parts can be hard and others can be plastic.

The consistency of the printing inks must be suitable for the production of the printing forms. For the production the printing form made of printing inks, these are pressed and rolled out into sheets of different thicknesses, which are punched out or cut into the desired shape; or the printing inks are molded into normal shapes or pressed, injected, granulated and shaped or into desired shapes Pressed molds.

The following additives to the printing mass are suitable to achieve the water resistance of the print samples:

Polyvinyl chloride, polyvinyl acetate, thermosetting and thermoplastic resins, rubber, compounds of vinyl resins or vinyl emulsions with nitrile rubber, Nitrocellulose as well as natural and synthetic waxes. Also tar oil, stearic acid, organic Solvents, aromatic hydrocarbons, ketones, plasticizers and accelerators If desired, together with fillers and carriers, can be used.

ίο Suitable dyes are added to these ingredients added in powder, emulsion or suspension form or pigments in powder or paste form. Examples of the improved composition of printing inks are:

i. On a PC basis:

I.

50 to 60 g vinyl polymers,

20-40 g of a mixture of 8 parts of copper phthalocyanine (Schultz, G., color table, 7th edition, E. Vol. II, no. ** 1364b) and 10 parts of dioctyl phthalate,

50-65 g cyclohexanone;

30 to 35 g of I,
i- 2 g stearic acid,
3 g phenolic resin,
6 cli

IL

14 - 16 g kaolin,
ι - 2 g of petroleum jelly;

III.

25 to 30 g of a colloidal mixture of vinyl polymer and butadiene acrylonitrile

Mixed polymer or an emulsion of this mixture,
2 - 3 g stearic acid,

4 - 6 g cyclohexanone,
10 - 20 g kaolin,

i- 2 g Vaseline,
20-30 g pigments.

When printing from the above compositions, depending on the material to be printed The following solvents can be used individually or in combination for printing forms: Cyclohexanone, methyl cyclohexanone, turpentine, toluene, methyl ethyl ketone, butyl alcohol.

2. Based on modified urea-formaldehyde resin:

I.

5 to 10 g of a carbamide or melamine resin,

¹ S S pigment paste made from 20 to 30% solids and glycerine,

50 - 70 g adhesives: gum arabic, dextrin, Crystal rubber;

10 g melamine resin,
5 g glycerine,

2 to 5 g pigments in powder form,

10 g glue as above,
0.2-0.5 g soap powder.

In these cases, water is used as a solvent in printing. After printing is a Heating to 100 ° required to solidify the resin. Heating can be done on the The stretching frame or the stretching machine, in a heated chamber or by infrared radiation take place.

3. Cellulose-based:

50 g nitrocellulose,
i, 2 g urea-formaldehyde resin,
up to 40 g dibutyl phthalate, '

- 15 g of a castor oil-modified alkyd resin in xylene in combination with carbamide or melamine resin in butanol,
- 20 g pigments in powder or paste form.

Suitable solvents for the use of cellulose-based colorants are acetone, diacetone alcohol, Cyclohexanone, cyclohexyl acetate, ethyl lactate and butyl propionate, in suitable combinations be used.

4. Wax-based: ⁸ - ⁵

24 g ceresin,
12 g beeswax,
4 g petroleum jelly,
up to 4 g pigments in powder or paste form.

Suitable solvents are turpentine, acetone, ethyl acetate, ethyl lactate, amyl acetate and butanol, which are used in suitable combinations.

After the pattern is printed or transferred, it is dried, cured, vulcanized, or through physical or chemical means, depending on the requirements of the chosen colors incorporated Components, fixed.

Claims (2)

Patent claims: 1. A method of producing multicolor printing in a form in a single printing operation using one of the dyes or the like in their mass for printing the desired A printing form containing multicolor patterns, characterized in that the composition containing the dyes or the like contains one or more several substances, such as polyvinyl acetate, thermosetting and thermoplastic resins, rubber, Combinations of vinyl resins or vinyl emulsions with nitrile rubber, nitrocellulose as well as natural and synthetic resins and waxes, which are incorporated after the printing process make the printed colors waterproof. 2. Printing forme for carrying out the method according to claim 1, which contains the dyes in their mass or the like for printing a desired multicolor pattern, characterized in that that the mass also contains one or more substances that after printing the printed Allow colors to be waterproofed. Referred publications:
German patent specifications No. 527 216, 614 786. © 5799 2.54