JPH0127197B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dyeing and finishing production, and more particularly the invention relates to a method for producing colored materials and to the colored materials obtained using this method, for example on monochromatic or multicolored backgrounds. The present invention relates to a colored substrate having a contour pattern and for use in thermal transfer printing of textiles.

The field of application of the method according to the invention is not really limited. Depending on the dye used, this method can be used to obtain substrates for thermal printing of different types of textile materials, to produce wallpaper, patterned film coatings, curtains, upholstery and other articles. . This method can also be used for copiers.

Methods for producing substrates for printing colored materials, i.e. textile materials, are known to the person skilled in the art, and here the substrates are coated with copier methods: photogravure, offset printing, flexography (see, e.g. French Patent No. 2261882, Cl.B41M3/12.
1975, British Patent No. 1295634, Cl.Do6 P1/
16.1972) or with the help of a flat screen or rotating model (see British Patent No.
959315, Cl.B6c, 1954). The substrate is dried and the pattern is transferred to the material via heat treatment. These methods make it possible to obtain clearly contoured patterns on textile materials.

Alternatively, a densified printing ink is applied to a continuously moving fabric from above, which is then passed between two rolls to distribute the ink against the edges on this fabric, onto a colored material, e.g. a textile material. Methods of obtaining substrates for thermal printing are known to those skilled in the art. This fabric is then dried (see USSR Inventor's Certificate No. 808569, Cl.Do6 P5/00, 1979).

As a result, polychromatic staining is ensured.

This method of producing the substrate is very simple and inexpensive; however, the pattern consists mainly of multicolored strips with clear borders, without a clear geometry, or stacked on top of each other without a clear continuity. Also, since it is in the form of a spot or smudge, the pattern style is limited.

Multicolor patterns can be modified or corrected by additional treatment of the printed substrate before or after drying by means of engraved rollers or mesh patterns with or without additional printing inks (see French Patent No. 2144836, Cl.Do6 P7/00,
1973). However, this makes the method of producing colored materials more complicated and expensive.

The main object of the invention is to provide a predetermined sharp contour pattern on the entire surface of the fabric without additional treatment with printing inks applied by engraving rolls or mesh models, thereby creating a pattern similar in quality to that by etching rolls. has,
An object of the present invention is to provide a coloring material and a method for producing the same.

This objective is achieved by providing a method for producing colored materials in which printing ink is applied onto one side of a continuously moving fabric and then the entire surface of the fabric is inked before drying. It is passed between two rolls for distribution. According to the present invention, during the process of moving the fabric between the rolls and at the same time moving the ink toward the edge, a roll having a pattern fixed to the fabric on the side opposite to that on which the ink is applied is applied. Then, a specific pattern is formed.

The pattern may be made of any material and affixed to the roll surface at a particular frequency and sequence, or the material with the pattern cut therein may be affixed to the roll.

In this way it is possible to obtain a specific continuous shallow and deep predetermined pattern along the entire length of the material and across the entire width. Additionally, halftones and smooth transitions from one color to another representative color for photogravure are provided. Different pressures are applied to the fabric during the distribution (or distribution) of the printing ink between the rolls, and where the pattern is fixed the pressure is higher (or lower depending on the thickness of the pattern). As a result, the printing ink is applied to the part of the fabric corresponding to the fixed pattern to a lower degree than the part without pattern and forms a background (the thicker the added pattern, the more thin) thus creating an engraving effect, where the background and pattern are created at the same time.

The disclosed method is performed with simple and inexpensive equipment and allows one pattern to be replaced by another with minimal expenditure of time and money; the patterns can be both text and images.

With the disclosed method, a colored material, for example a fabric having a colored surface with a pattern thereon, has a dark or light contour pattern, and the colors of this pattern and the textile background have the same shade of different color intensities.

A specific sharp pattern is thus provided on the resulting colored material, close to the engraved pattern and distributed along the entire length and width of the material. When using the claimed method, it is possible to obtain materials with patterns that could not be obtained by thermal printing from paper substrates produced by known methods, for example to obtain substrates for thermal printing of textile materials. is possible.

The invention will be better understood from the following detailed description of a method for producing a pigmented material in the example of a substrate for thermal printing on textile materials with reference to the accompanying drawings.

The fabric of the substrate 1 (FIG. 1), obtained by known methods and unwound from the drum 2, is moved by guide rollers 3 at a speed of, for example, 1 to 20 m/min.
Two rolls 4 and 5 arranged one above the other and elastically pressed against each other, for example with a force of 0.1 kg/cm ²
The fabric is then fed into the drying chamber 6.

On one side of the continuously moving fabric of the substrate 1 is applied a suitable amount of known textile ink delivered from a dispensing device 7. For example, a known thickened printing ink having the following composition is used: 40 g of dispersed Blue K 100 g of urea 200 g of water 1000 g of thickener It is possible to simultaneously apply printing inks of different colors to obtain multicolored fabrics.

To obtain a predetermined pattern in a monochromatic or multicolored fabric along its entire length and across its width,
It is necessary to fix the pattern 7 on the surface of the roll 5 which acts on the substrate on the side opposite to that which applies the printing ink.

As shown in FIG. 1a, cut out the pattern 7 from writing paper, Watzmann paper or another material along the contour and use adhesive, for example in the form of a thickener based on methylcellulose (4%), with a specific frequency. It is attached continuously to the surface of the roll 5 (for example, it is glued). However, this pattern 7 can be cut in any other material and this material with the pattern cut therein can be applied (glued) onto the surface of the roll 5, thus obtaining a stencil for making the pattern.

In the process of passing the substrate 1 between the rolls 4 and 5, the printing ink is distributed across the width of the fabric and at the same time a print of a specific pattern is produced which is fixed to the roll 5.

Due to the pattern fixed on the rolls, different pressures are created between the rolls (for example, the average pressure experienced by the rolls is equal to 0.1/cm ² ) during the distribution of the printing ink on the fabric up to the edges. Where the pattern printing elements are stuck, the pressure is higher due to their thickness, so the thickness of the printing ink at the corresponding places on the fabric is thinner than the ink layer forming the background (fixed). The thicker the patterned printing element, the thinner the ink layer), the effect is similar to that obtained with an etching roll, where the background and pattern imprints are obtained simultaneously but of different color intensities.

Depending on what part of the pattern is cut out, this pattern on the substrate can be made darker or lighter.

A colored substrate having a predetermined pattern printed thereon is fed into a drying chamber for drying at a temperature of 100° C. and fed via guide rollers to a pair of rolls 10 to separate the substrate fabric and textile material 11. Combine and calender 12 at a temperature of 200 °C for 30 seconds, for example.
The substrate 1 is a polyester fabric for continuous transfer of dye from the fabric onto the textile material 11. After this, the colored fabric is wound onto a roll 13, while the substrate fabric used is wound onto a roll 14.

Thus, substrates for thermal printing of colored materials, such as textile materials, wallpapers, image film coatings, etc., can be produced by the claimed method; the fabric has a colored surface with an identical pattern along the entire length of the fabric. This pattern is made with dark and light outlines; this pattern and the fabric have the same shade, but different intensities.

Thus, for example, Watmann paper (thickness 0.24
If the maple leaves are cut out from mm), glued onto a roll and the printing ink described in the previous example is utilized, the substrate fabric will have a blue background and a dark or light color depending on the pressure exerted by the roll. Has almost white or bright maple leaves with contours.

[Brief explanation of drawings]

FIG. 1 is a schematic illustration showing the production of a substrate according to the claimed method; FIGS. 1a and 1b are different examples of producing a pattern;
and 5 indicates roll; 7 indicates pattern;
8 indicates the material from which the pattern is cut.

Claims (1)

[Claims] 1. Applying printing ink onto one side of a continuously moving fabric, then feeding it between two rolls to distribute the ink over the entire width of the fabric; In the process of drying colored materials, during the process of distributing the ink over the entire width of the fabric simultaneously with the movement of the fabric between rolls 4 and 5, a pattern printing element acts on the fabric on the side opposite to the inked surface and prints a pattern on its surface. 7
A method as described above, characterized in that the required pattern is produced on the fabric by means of a roll 5, on which a roll 5 is attached. 2. A method as defined in claim 1, wherein the pattern printing elements 7 are cut out of any material and are fixed to the surface of the roll 5 with a defined frequency and succession. 3. A method as defined in claim 1, in which the material 8 with the pattern printing elements 7 cut out therein is fixed to the roll 5. 4. During the process of distributing the ink simultaneously with the movement of the fabric between the rolls, the desired pattern is created on the fabric by means of rolls which act on the fabric on the side opposite to the ink side and on whose surface the pattern printing elements are attached. A colored material obtained by a method of applying a color, in which the outline of the pattern on the fabric is darker or lighter than the imprint itself, and the pattern and background are the same color but have different color intensities.