DE1958263A1 - Process and machine for dyeing textile pieces - Google Patents

Description

Leemetais Limited,

Fountain Street, Lylacclssfield / Chester / England

Method and machine for dyeing pieces of textiles

This invention relates to an improved method and machine for dyeing pieces of fabric in In the form of a ribbon or in an open width.

Ulinden dyeing machines have been proposed in which the fabric is dyed in ribbon form, i.e. the fabric is bundled in-its width to to take up any space. Are dyeing machines

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manufactured to make a number of these ribbons or bundles depending on the capacity required. In all cases the principle is basically the same. 3 of the fabric tape is in one containing the color liquid Bad in the machine collapsed so that it has a role and a curve running, either oval or round can be and then returns from the winch back into the bath with the two ends attached to each other to a ^ to form endless ribbon. There are other methods of the Bringing in the fabric, acting as spiral dyeing devices are known, ujo basically the principle of the device consists of a spiral introduced into the machine Use length in such a way that the same effect is achieved from individual bands.

IYIit the introduction of substances made partly or wholly from synthetic fibers, the temperatures during dyeing have generally increased. There are "lüindenmaschinen proposed morden, whose treatment— liquid is covered with hoods and one is dyed at temperatures above 100 ° C, is the UJindenrolle and its auxiliary equipment attached within a fully closed vessel which is pressurized.

The fabric is in the machine in a number of turns

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arranged, with a portion of each turn extending over
the winch roll extends, but the greater part "
of every turn in any given case in a folded one
Shape along the sloping back wall and also lengthways
the base of the bath is packed and a relatively small part of the substance is above the level
the liquid forming the bath is attached.

The force required to pull the fabric out of the tight
Pulling a packed class in the bathroom varies from one to the other
Twist to the other and also depends on the physical form of the fabric, although it is in the case of smooth, fine fabric
is lower than with coarse, rough fabric.

There are several problems with the winch dyeing machine
tied together. The fabric is arranged in folds in the bath, is lifted out of the liquid over the roller and brought back into the bath by the winch, but when the fabric is lifted out of the bath a considerable amount of color liquid is transported with the fabric and on the fabric between the winch roller and the
Liquid level exerted a pull down, in exactly
the opposite direction of fabric movement. at
open, woven and knitted fabrics, the amount of color liquid that is highlighted in this way is very high

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considerable, undoubtedly several times the weight of the fabric tape itself, and this is one of the reasons a UJinden machine tends to stretch the fabric "Streoken" and why it is difficult to develop a winch that does not slip. The requirement after dyeing at high temperature grows steadily and this complicates the problem because the reason for the dyeing occurs high temperature is to swell the substance in order to to give it better color absorption and for this very reason the fabric is easier to stretch.

To some extent, the amount of color liquid lifted out by the fabric is the factor that determines the Operating speed of a Ulinden dyeing machine the most limited, because at a higher speed the "extract" of the liquid is greater and thus also the amount of the Pulling the fabric in the wrong direction.

The transport of the substance from one side of the vessel k to the other is facilitated by the fact that the superfluous Liquid is removed from the fabric in order to reduce its stretching (but the simple removal of the Liquid through some form of mangle device would result in any wrinkles in the fabric in particular to fix in thermoplastic fibers and would even contribute to further stretching of the fabric.)

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1958 283

When dyeing fabrics in the open width, such as carpets or other fabrics of great weight, lies the usual weight ratio of liquid to substance in the range of 4o or 45 ί 1 and it is now found that this ratio can be reduced to 20 s 1 or even lower, thereby reducing a saving of the used Ulasser volume and the Amount of waste water and a reduction in the size of the machine results and also the possibility of dyeing at high Temperature or at ambient temperature is given. A decrease in the amount added to the liquid Chemicals is also reached »

According to the invention includes a method of removal superfluous liquid from the substance before the rise of the Traversing the fabric using a winding roller in folded form by a bath, drawing off the liquid from the bath at a level below that at which the fabric ceases to remain in the folded form and bringing the liquid back to the opposite one Side of the machine to move through the machine again with the folded fabric.

The invention also includes a machine for practice the procedure in which the fabric is folded

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through the bath in an arched channel or passage runs between support walls, the channel or passage on its inlet side is supplied with liquid, which is with the fabric moved through and on the opposite side Side of the machine at a level lower than that of the inlet from the channel or passage.

The invention is made with reference to the accompanying Drawings described.

It shows:

Fig. 1 is a cross-sectional view of a dyeing machine, which shows the passage of the material either in open or in ribbon form and in dash-dotted lines also dividing pins and a top spray assembly for Represents fabrics in ribbon form;

|; FIG. 2 is a cross-sectional view similar to FIG. 1, but showing with an air duct and a device for controlling the air supplied therein;

Fig. 3 is a detail of the air tube showing the position of Represents holes or openings therein;

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2 Fig. 4 shows a detail of the arrangement of the roller R and of the pin P for tape fabrics;

2 Fig. 5 shows a detail of the arrangement of the roller R and the rotating pin P for varying the fold in a tubular fabric with each pass;

FIG _e 6 is a side view of a spray pipe; Fig. 7 is a cross-sectional view of the same;

8 shows a detail of the drive for a pendulum valve to control the flow of liquid to the spray assemblies.

A UJindendyeing machine A for dyeing fabric 1 either in open or in ribbon form is essentially with one semicircular channel C formed through which the Tissue 1 is moved in folded form. The channel C is arcuate and extends the entire length of the Machine. The inner surface of each of the channel C is over a part of the circumference is perforated on the rear side thereof in the direction of movement of the fabric 1, i.e. the perforations £ extend over essentially one half of the Circumference of the inner surface £.

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The fabric 1 is transported over a winch U /, falls, into channel C in a folded shape and is attached to the other Side of the channel C drawn off over a roll R, from which it runs again over the U / inde UJ.

1 dye liquid is channel C won spray tubes B and B and is fed by means of a pump D to a (or both) pipes _a and _a removed and passed through

1 2
the spray tubes B and B again to channel C to create an ^M head "pressure therein and to push the folded fabric 1 through and on the other side of the channel C out of the liquid before the fabric 1 is taken over from the roll R. is, whereby a large part of the liquid runs off the fabric 1 before it begins its Uieg over the roller R and the winch UJ and a reduction in the weight to be lifted from the channel C and therefore a reduction in the pull is achieved.

k Fig. 1 shows the return of the liquid through the two sprays

12th
tubes B and B with the liquid impinging on each side of the fabric 1.

When the fabric 1 has a band shape, they are dividing pins P provided at the width of the channel 3 below the R roller. The tissue 1 is inserted into the channel C in folds to the

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Fill in channel C and prevent the liquid from

to flow past the tissue rather than as a propulsion means

to act to move the folds along channel C.

The coloring liquid flows along the channels · C and

1 enters the interior through the perforations or holes c_

yes the machine to go through pipes jd of a heat exchanger

1
D to be heated before it by means of the pump D by

Openings v. in a tube £ and / or through openings _v

ο ..19

into the pipe a. is deducted. Each of the openings ν. , v_

2 3
is through the pipes a_, a_ made of stainless steel with the outer

4 pump connected, each pipe having an isolating valve _a

having, which is arranged so that the liquid either

1 2

from the pipe a_ or from the pipe a, or from both or

4th
regulated by means of the l / entils ει can be withdrawn to a

Proportional! Sounds from each side to yield. The heat exchanger

1 1

D is shown arranged in the interior space ii , but it can

be arranged in the pipeline to pump D. One filter is built into the pipes or the pump.

When leaving the pump D the liquid flows to one

Pendulum valve D (Fig. 8), which the dye liquid

1 2 alternately delivers to spray tubes B and B, whereby the

Laying the folds of the fabric 1 in the channel C is achieved.

2
The drive for the pendulum valve D is from a shaft w the

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Main winch via a variable speed drive

2 3

and articulated links w.> w_ taken, which allow the pendulum movement of the valve to be changed, so that the Folding can be adjusted so that the fabric 1 falls evenly into the channel C.

An upper spray arrangement TS is in dash-dotted lines shown in Fig. 1 and is connected to the same pipeline of

connected to pump D, but before pendulum valve D. branched off so that it is not affected by this valve. A control valve is in the line to the upper spray assembly TS arranged to vary the amount of liquid supplied. Except for an additional supply of fluids on the fabric 1, the spray arrangement TS also serves as a fine control of the wrinkle effect by reducing it

12 or increasing the pressure on spray tubes B and B.

The volume of liquid introduced into channel C. is controlled by using a variable speed pump D, but it can also be a fixed speed pump Speed and an adjustable master valve can be used to control the flow of liquid.

A large amount of liquid is required to operate the Machine required, but a large number smaller

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Spray nozzles would not be desirable or they would spawn clog with "fluff" v /, these are small fibers, soft easily detach from the fabric during dyeing. On the other hand, nozzles with a large bore have the disadvantage that Allowing liquid to hit the fabric too hard. This disadvantage was eliminated by using a spray tube arranged as in FIGS. 7 and 8.

1 2

The main spray tubes B, B have a number of smaller ones

1 1

Pipes Jd that enter the main spray pipes B or

B are welded so that the two water jets meet and create an overlapping fishtail effect generate, whereby the main energy of the spray nozzles is split up on each other before the liquid forms the tissue 1 a wide spray achieved. This is also applied to some knitted fabrics that are made in tubular form and other flat fabrics which are conventionally sewn together to create a tubular fabric are made.

Conventionally, such fabrics are dyed by tape dyeing, but the main problem is that those in the tape or fabric wrinkles generated during dyeing are difficult to remove and sometimes become in the fabric stipulate even after equipment firing has been carried out have been. The folds are made by forming a balloon

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- eliminated in a tubular fabric in which Jets of compressed air are directed onto the tissue 1, when it is lifted out of the liquid by the roller R, whereby the tissue inflates like a balloon.

When the fabric is picked up over the roll R, it first runs past the air tube AP, which has a series of very small holes g_ in the direction of movement of the

_ Fabric 1 has. The air enters the tube of the fabric 1 and inflates it between the roll R and the winch UJ (Fig. 2), and it has been found that the use of the top spray assembly TS for successful Operation of this principle is important. The action of the upper spray assembly TS is to remove the upper end of the hose to seal, to prevent the escape of air with the fabric via winch UJ and into duct C, where otherwise Cause problems with wrinkling. UIf the air moves the hose between the roll R and the

W winds UJ once inflated, it can be interrupted for quite a long time and the tissue balloon will get even. In some cases the balloon will even generate itself without additional air, provided that the upper spray arrangement TS is in operation.

UIf the fabric is allowed under those described Conditions to run, it will be the entire length

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of the dyeing cycle remain flat without great difficulty, however, the creases on the two edges of the hose would be in more or less the same place each time and in some cases would form over the entire length of the fabric as permanent folds.

To remedy this deficiency, there is a second roll roughly in the middle between roll R and UJinde UJ

2
R attached a little below the center line of the theoretical UJeg of fabric 1. If balloon-like inflation occurs, the lower half of the balloon comes into contact

2
with the roller R, which is either driven at the linear speed of the fabric or released to be rotated on its own. The balloon is given a slight lateral movement by means of a roller-free pin RP, whereby

2
the part of the fabric in contact with the roll R remains aligned, but the free part at the top of the balloon is moved in the direction of the thrust exerted by the pin RP and therefore becomes the edge of the flat in the previous pass through the machine moved slightly, in other words the hose is constantly moved forward in a helical manner during the entire period of the dyeing process. To keep the pin RP from pushing the tissue balloon too far out of direction, retaining and dividing pins B are used, as illustrated below the roll R. The RP pen is a roll pen, which means it can

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rotate freely when the fabric 1 passes over it.

It is found to be murder under certain circumstances with an uncontrolled air tube AP the balloon became too pronounced and tended to slip on the Generate winds UJ. This was done by means of an air control valve AC overcome (Fig. 2), which is actuated by a finger F, which rests lightly on the balloon made of tissue 1. The air control valve AC is arranged so that when the balloon has reached its "'correct dimensions, finger F is in the air shuts off by the valve and therefore controls the air supply to the air pipe AP. The finger F can be used for all webs of tissue be common in the machine, but experience has shown that it is cheaper to have a separate control for each fabric web to be provided.

There are fabrics that are suitable for dyeing in open width (Carpets are a good example) but other rigid fabrics are also suitable. As the machine cuts the fabric in lays regular folds and holds them within channel C and as they move through the general flow of fluid supported in the channel C, the machine is for this type of Production very well suited. The main mechanical problem with open width dyeing is the fabric from wandering sideways and if it is not stiff enough it has a tendency to bunch up and to form into a bundle by yourself. This inclination becomes in this

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Machine surmounted and in the case of rigid carpets and the like it is only necessary to have an arch-shaped Guide bar or plate on each side of the fabric to use to guide it as it moves through channel C and to ensure that the fabric has the width des Canada C fills in reasonably well to avoid excessive flow to avoid the dyeing liquid. Otherwise tissues, which bundle or wander are controlled in a conventional manner, with the help of opening rollers, spiral rollers, edge guides and the same.

In cases where the pile of the carpet is made of thermoplastic fabric which is compressed by the spray assemblies, a variable shape winch such as that described in U.S. Patent 1,092,927 can be used to prevent wrinkling if desired can be carried out by setting the winch to an oval shape, while the spray is directed back, which would otherwise hit de.Ti ^r lor.

Carpets are preferably introduced into the machine by their back rests on the winch, so the spray lance can

2 1

B do not damage the pile. The spray tube B will then go down directed towards the back of the channel C so that the liquid enters the channel but cannot hit the pile.

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The pendulum valve D feeding the spray tubes B and B.

2 is then set so that the spray tube B the The back of the carpet was sprayed and the oval of the winds is in a position to maximize the folding

To give a rash, so the spray tube B supports this rash and by adjusting the left / right of the nozzles of the

2
Spray tube B relative to the deflection of the U / inde can adjust the width of the fold and / or ground to adequately fill the space. The upper spray coating TS is reduced to a very light jet or is completely blocked.

The machine in all its forms has, in addition to the advantages already mentioned, a low liquid requirement, and therefore has improved economic efficiency with regard to heating, water, chemicals and waste water; U / inde achieved, u / express most of the liquid dye from the tissue expires before it reaches the top of the channel, however, before it falls into the channel C also due to the new ψ wetting effect of the spray assemblies. The same principles apply to machines designed to handle temperatures above atmospheric; To dye boiling point, i.e. overprinting machines

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Including winch U / channel C and the other parts in a closed chamber. Such machines are (for reasons of mechanical strength) im essentially cylindrical in shape.

Claims

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Claims (7)

Claims n \ methods superfluous liquid in the dyeing removing v / on textile fabrics in open or ribbon form prior to running the fabric through a wind roll, characterized by moving the fabric (1) in folded form through a bath stripping uon liquid from the bath in a level below that at which the fabric ceases to remain in the folded form and the return of the liquid on the opposite side of the machine (A) to run back with the folded fabric (1) through the. Machine. 2. machine for carrying out the method according to claim 1, characterized by an arch-shaped Chute or a passage (C) between guide walls in which the fabric (1) is folded, a device 1 2
(B, B) for supplying liquid into the channel (C) or passage, at its inlet side, in order to flow with the tissue (1) along the channel (C) and a device (D) for withdrawing the liquid from the channel at a lower level than the inlet. -19 - Ö09823 / 1 3. Machine according to claim 2, characterized in that the inner wall (.c) of the channel (C) is perforated over part of its surface (c_ ) and a pump (D) for drawing off the liquid from the channel (C) is arranged on the outlet side. 4. Machine according to claim 2 or 3, characterized marked that the liquid 1 2 is fed to the channel through spray tubes (B. B), which are directed at the tissue (1) when the latter moved from the winch roller (lü) to the channel (C). 5. machine according to one of the preceding claims, characterized in that a Apparatus (AP) for balloon-like formation of a tubular tissue is provided after it has opened the channel (C) and before it runs over the winch (UJ) and means (RP) for helically moving the fabric to form wrinkles at the same location in one to prevent subsequent passage. - 2o - 009823/1369 - 2ο -: ■ ■ ■ ■ ·: ι t t »J 6. Machine according to one of the preceding claims, marked by a Device for controlling the supply of liquid to the Inlet pipes. 7. Machine according to one of the preceding claims, characterized in that the liquid on removal from the channel (C) is pumped through a heat exchanger (D) before going to the Inlet pipes. 009823 / $ 136 L e e r s β 11 e