DE2060153A1 - Method for producing a printed yarn - Google Patents

Description

Process zsuin Ersseugen a printed Yarn.

The invention relates to the printing of yarns and similar elongated materials, the term "yarn" being used hereinafter for the sake of simplicity »The invention; relates in particular to the application of dyes or other color-influenced media to vision-moving yarns at spaced-apart locations in the longitudinal direction of the yarns. It is known to apply dye in intervals on a moving yarn by the yarn is hindaxshgeführt between spaced-apart rollers, of which at least one of a Farbstoffauf bring roll ISTJ wherein one or both rollers werrden periodically shifted ■ so ü & B the Färb material on the roller is brought into contact with the thread in order to apply dye to it «

In the previous versions, the pressure at the roller clamping point is set so that for a given Shading or a given hue in the back

Look at even dye application, taking into account the viscosity of the dye and the nature of the yarn are considered, a minimal amount of dye is used will.

It has been found that by appropriately controlling the amount of dye applied to the rollers, it is possible that a salient or pronounced shade difference or hue difference can be produced in the resulting dyed yarn within the longitudinal extent of a single application of color to the yarn, the dyestuff difference being a different one. a pleasant effect in the earth product results in > for example a tufted floor carpet which has a color pattern which is partly formed by the colored fermentation areas.

According to the invention Uiftfä $ t a method for generating printed yarn, in particular a printed warp track, in which a dye or another color-influencing Medium optionally on the individual yarns at points spaced apart from one another in the longitudinal direction of the yarns is applied to or in front of a clamping point, which is determined by relatively movable elements when they are are in pressure with each other, building a Excess dye on the upstream side of the nip during the passage of the yarn through this and the subsequent separation of the relatively movable ones Elements for releasing the excess of color for uptake by the yarn.

Preferably, the dye is applied to the nip and at least one of the relatively movable ones Elements is a dye application element.

In its most general embodiment, comprises a device to carry out the aforementioned 'method relatively movable elements in one of their relative arrangements can work together to create a nip on the yarn

Form zsu, and a device for applying dye or the like. That if on or in front of the roll clamping point the relatively movable elements are rollers - dem Yarn can supply dye. The relatively movable elements have corresponding surfaces, and so does the pressure between them is such that at the pressure nip an excess of dye or the like is built up, which is then released to the yarn when the relative moving elements are separated from each other the relatively movable members include at least one roller, and one such roller includes a roller for applying dye or the like.

To perform the invention, a device can advantageously be used as it is described in the pending patent application P 19 52 132.5 and as it is shown in the drawing. These. Apparatus comprises two rollers 11 and 12 which are arranged adjacent to one another and each rotate about an axis which are spaced from one another and parallel to one another. The lower roller 11 is partially immersed in a trough 13 in an amount of dye. Both rollers 11 and 11 can be moved into and out of engagement with a yarn 16 passing between them under the control of a pneumatic device Ik. The pneumatic device iU can be controlled in accordance with a predetermined sequence to cause the rollers 11, 12 to intermittently move deeply in contact with the yarn 16, thereby delivering dye to the yarn at intervals in the longitudinal direction thereof, which from the roll 11 is taken from the trough 13 *

The viscosity of the dye is chosen so that an excess of dye is obtained at the roll nip, taking into account the nip pressure applied and the amount or the speed of dye material pick-up under the prevailing conditions while

109825/185?

the level or amount of paint that is usually applied is less than the maximum amount which is suitable for the yarn when treated with this dye.

The effect, namely the effect of applying paint, which at the end of the application area of greater intensity than at the beginning of the application area is most pronounced in those yarns that have a high level of moisture retention. For example, in regenerated cellulose yarns, the change in intensity is readily apparent (i.e. with a yarn which is called "Evlan" sold) as well as spun yarn.

When the yarns are dyed in the manner described above as a warp web of yarns and such Warp web is subsequently processed in a tufted product, for example a tufted carpet, has the scope an area of a given color at its end; d. H. in its last part formed, a more intense one Color so that the dividing line between successive colors is accentuated in the direction of the lines of the pimples is.

. However, the invention is not limited to the production of

Tufted floor carpet is limited as the dyed thread web can be used with other fabrics, and it can, if desired, can be used as a chain for subsequent use on a loom.

It should also be noted that although to carry out the invention, a device according to the floating Patent application P 19 52 132.5 is preferred, but that other devices can also be used, , and in particular a device in which only one of two co-operating rollers is movable to move with engaging the yarn and moving it across its length into engagement with a cooperating roller.

109825 / 1BS?

Claims (3)

Claims Process for producing printed yarn, in particular a printed warp web, in which dye or another color-influencing medium optionally on the individual yarns at a distance from one another Place at or in front of the yarn in the longitudinal direction a clamping point is applied, which is determined by relatively movable elements when these are in Pressure contact, characterized in that on the upstream side of the Kiemrastelle during the passage of yarn through them an excess of dye is built up and that thereafter the relative movable elements are separated to release the excess dye for uptake by the yarn. 2. The method according to claim 1, characterized in that that the dye on and through one of the relatively mobile Elements is applied. 3. The method according to claim 1 or 2, characterized in that that the nature of the surfaces of the relatively movable elements concerned and the clamping pressure between these surfaces with regard to the viscosity of the dye and the extent to which the yarn absorbs the dye be selected so that the required degree of excess paint build-up is obtained at the nip. 1098257185? Blank page