DE3134569C1 - Process and apparatus for the patterning of a continuously advancing cloth web - Google Patents

Abstract

A process for the patterning of a continuously advancing cloth web with a treatment agent contained in a foam, in which the foam is coated onto the cloth web in the form of a layer via a foam-coating appliance. The foam is made non-uniform in places or in tracks on the cloth web, for example by displacement or removal in places or in tracks or by adding a gaseous, liquid or solid treatment agent in places or in tracks. The apparatus comprises movement generators arranged above the foam layer and having an engagement element which "writes" in the foam, i.e. engages into the foam layer in the manner of a finger or pencil or other displacement article or directs a narrowly limited jet towards the foam layer as a nozzle or collimator. The non-uniformities generated in the foam layer stand out on the cloth web as a corresponding patterning. <IMAGE>

Description

The unevenness takes place on the web as soon as the foam is up this has been transferred. in the that is the first moment Foam still forms on the surface of the web as a layer without being significantly in it to penetrate. In this phase there is still an attack on the foam as a layer possible. However, as soon as the foam is drawn into the web or incorporated has been, the pattern formation begins in the web, for example when dyeing the Pulling up, practically immediately and is a major influence on the pattern image not possible anymore. The unevenness should take place in places or in traces. This can be paraphrased with the catchphrase »writing in foam«. The bodies or tracks should be point-by-point or line-wise zones opposite the width of the material web represent much smaller dimensions. With a web width of 2 to 5 m these zones should have a diameter or a width down to the finger or Have pencil width. However, there are also somewhat larger dimensions the invention, d. H. all dimensions as they are used to achieve patterns on the common substrates, such as textile goods for clothing and decoration and for carpets, are useful.

The unevenness in places or in traces achieved in the foam layer merges into the web and is reflected in its sampling.

This is a fact that is favored by the fact that the foam much less or practically no mobility at all, compared to a liquid, depending of course on its foam number, d. H. to the Volume ratio between the liquid forming the foam and the foam. The higher the foam is inflated, the lower its mobility and the more faithfully the patterns generated on the »surface« remain on the web and are retained. At the same time, a liquid would penetrate the web, at least in the case of textiles Goods, and there would be no opportunity at all to find something comparable to the invention To attach samples.

The patterns that can be achieved with the invention when applying foam are characterized by a contrast to a liquid pattern, which is from the DE-OS 23 61 517 is known to be much more concise.

According to claim 2, the unevenness by displacement of the Foam can be achieved.

The displaced amount of foam accumulates in the vicinity of the Displacement area and leads there to an increased supply of treatment agents, which is noticeable, for example, in the case of a coloring, that the color is on The edge of the displacement area appears particularly deep and thus emphasizes it This effect is absent if the foam according to claim 3 is removed.

Conversely, something can also be added according to claim 4, namely a gaseous, liquid or solid treatment agent, which either the foam treated, for example, to make this coincide locally, as it is for itself taken from DE-AS 22 14377 is known, or a treatment effect the web in addition to that achieved by the foam and its components To achieve treatment effects.

The device for carrying out the method comprises a foam generating device and a foam application device, by means of which foam is applied to the material web in layer form can be applied, as well as a device for sampling the layer According to the identifier of claim 5, the device according to the invention is characterized in that the device has at least one movement generator arranged above the material web as well as an associated attack element for unevenness in places or tracks the foam layer comprises the attack element attacks the foam layer and adds the unevenness in places or tracks. This will be Attack element moved by the motion generator to create a pattern in the Attack element to generate foam layer moving past it also falls under the Invention that the motion generator generates the motion zero, d. H. the attack elements can stand still, so that there is a strip-shaped pattern in the foam layer Normally, however, the attack elements are also lateral movement components to create a two-dimensional pattern in the foam layer The attack elements can develop their effect right down to the bottom of the foam layer, however, the patterning according to the invention already results when the foam layer is only made uneven at a part of its height in places or in traces.

According to claim 6, the movement generators can have several attack elements be common, which are realized in the reproduced in claim 7 manner can.

-However, each attack element can have its own movement generator be assigned.

So while in the first-mentioned case those attached to the carrier Attack elements perform the same movement with the same training and thus create a pattern with a type of repeat exists in the second embodiment a possibility of producing a completely arbitrary sampling by all existing movement generators independent movements on the associated Transferring attack elements.

An important embodiment of the invention is the subject of the claim 9. The fact that at least one of the attack elements can be switched off or in the case of one mechanical attack element can be lifted from the surface, it can except as desired Effect can be brought about, whereby a further modification comes into the sampling.

In claims 10 to 19 are different types of attack elements described.

The rod or strip-like member of claim 10 is intended as a Kind of pencil or finger act, wholly or partially into the foam layer the web protrudes. Such an engagement element can be rigid or flexible, whereby especially in the latter case it is included that the attack element is the track touched and roamed on the track.

A preferred embodiment of the attack element is the subject of claim 13. The tension member can be a more or less thick cord or a Chain or the like and performs through its mobility in relation to the Movement generator independent movements, which are in corresponding tracks in knock down the foam layer. It falls under the invention that the tension member itself, for example if it is a chain that attacks the foam layer, but an additional pendulum body can also be attached to the free end, that moves in the foam layer. according to Claim 14 rolls or grinds the pendulum body back and forth on the web.

If it is a ball (claim 15), the generated Pattern trace relatively narrow with slowly blending edges.

In the case of a pendulum body with at least one flat surface (claim 16) the track is wider and, as the pendulum body with the flat surface, becomes flat rests, completely cleared of foam. The aforementioned attack elements displace the foam to the side.

According to claim 17, however, the attack element can also have a Suction pipe connected suction proboscis that put the foam or sucks out traces of the foam layer.

Instead of removing the foam in places or in traces, you can something can be added in such zones. This is done in the embodiment according to Claim 18 realized by a spray device, by means of which a narrowly limited Jet of a gaseous, liquid or powdery treatment agent onto the Foam-dirigible. It is not the subject of the invention, the entire foam surface spray evenly. Rather, what is essential is the narrow limitation of the beam, with which "writing in foam" is therefore possible.

According to claim 19, the attack element can also be a light source be, by means of which a narrowly limited beam of light or infrared on the foam is steerable.

Due to the heating in the foam in the area where the jet hits The foam disintegrates there or can also change in other ways, so that too in this way a sampling can be achieved. The drawing shows exemplary embodiments of the invention shown schematically.

Fig.1 is a side view transverse to the path of a basic one Embodiment of the device according to the invention; Figures 2 and 3 are views in Longitudinal direction of the web of various embodiments of the invention; Fig. 4 is a section along the line IV-IV in F i g. 3; F i g. 5 is a section after Line V-V in FIG. 3; F i g. 6 is a cross-section through a circumferential Tube-shaped carrier with elongated engagement elements; F i g. 7 is a perspective View of a motion generator with an attack element that can move on all sides; F i G. Figure 8 is a cross-section through an assembly with suction trunks; F i g. 9 is a View of a motion generator with a spray device arranged thereon; Fig. 10 is a view of a motion generator with a light source arranged thereon Collimator; Fig. 11 is a perspective view of another embodiment the invention with across the web extending carrier and attack elements; F. i g. 12 is a controller for an arrangement according to FIG.

-In F i g. 1 shows a web 1, which is on a substantially horizontal guidance via rollers, not shown, or the like Moved forward in the direction of arrow 2 across the width of the web is at 4 foam in the form of a layer by a foam application device, not shown given up.

A movement generator 10 is arranged above the web 3, which is only indicated by a rectangle and from which against the web 3 a Attack element 12 protrudes in the form of a rod that extends almost to the web 1 is enough, but can also end above this by a predetermined amount, at least but engages in the foam layer 6 and displaces it at the relevant point and uneven.

The movement generator 10 gives the attack element 12 movements, which is perpendicular to the plane of the drawing, d. H. across track 1 and direction of movement 7 extend the foam layer 6, but also one component in parallel to the direction 7 can have.

As in connection with the F i g. 2 and 3 will be explained across the web 1 several movement generators 10, each with an associated attack element 12 be present next to each other, or it can be on a motion generator 10 sit several adjacent engagement elements 112.

F i g. 1 also shows that the arrangement of the motion generator and attack elements can also be staggered in direction 2 of the path movement, as indicated by the second movement generator 10 'with the engagement element 12' is.

In Fig. 2, the web 1 runs perpendicular to the plane of the drawing. It are several motion generators 10 with each associated attack element 12 next to each other arranged. Since each movement generator is assigned its own attack element, -can all attack elements 12 perform different movements from one another, is it is controlled by different programs, either by a random generator controlled. The movement takes place according to FIG. 7 both according to the arrow 23 in Transverse direction to the web as well as according to the arrow 24 in the longitudinal direction of the Material line, so that any patterns in the plane of the Web 1 come about.

In Fig. 3 is a across the width of the web 1 reaching Support 25 is provided in the form of a square hollow profile, at the ends on the one hand a motion generator 100 for generating a -in the sense of Arrow 26 transversely to the web 1 reciprocating movement of the beam attached is and on the other side a motion generator 200, the one reciprocating Rotational movement of the bar 25 in the direction of arrow 27 brings about. Controlled by the When the two movements are superimposed, the most varied of patterns are created.

In addition, another sampling option is created here, by the individual engagement elements 12 on pneumatic piston / cylinder units 28 are attached, which allow the attack elements from the foam layer 6 to take off, so that you can choose to produce a sampling or not. To the through the points marked by arrows 29 are the engagement elements 112 except Attack. The pneumatic piston / cylinder units 28 sit on a common pneumatic supply line and can optionally through electrically controlled valves be operated. Likewise, of course, instead of the pneumatic piston / cylinder units 28 corresponding magnetic actuators may be provided.

In the sectional view of FIG. 4 are the ones in the left half the F i g. 3 existing attack elements 12 can be seen in detail. It deals around the pipe that is placed on the piston rod 30 of the piston / cylinder unit 28 or hose sections 31 which, when the piston rod 30 is retracted, in the form shown in FIG G. 4th recognizable way with their lower end at a distance above the foam layer 6 while they are with their piston rod extended Dip the lower end into the foam layer 6 and at the relevant point the Displacement of foam. The pipe or hose section 31 is shown open at the bottom, but can of course also be closed. It is also possible to use the lower one At the end of even larger displacement or wiping bodies to attach, which the effective area of the attack element 12 enlarge and generate wider areas or tracks which the foam has been displaced F i g. 5 leaves another embodiment recognize the engagement element 12, in which instead of the relatively rigid pipe or hose section 31 a completely flexible chain 32 on the piston rod 30 is attached, which in the embodiment carries a ball 33 at the lower end, which hangs above the foam layer 6 when the piston rod 30 is retracted and when it is extended Piston rod 30 extends into the foam layer 6 in the manner indicated and this unevenly The difference to the embodiment according to FIG. 4 consists in the fact that there the track of the attack element is uniform over a certain width is while the ball is a track with a deepest point and a steady rise towards the edges in the foam layer 6 produced. The embodiment according to FIG. 5 can also be designed so that the balls 33 rest on the web 1, the balls 33 then being able to roll back and forth on the surface of the web 1. Instead of a ball, the flexible chain can also have a one bounded by flat surfaces Pendulum body 34 may be arranged in the form of a cube or the like, the tracks corresponding to the embodiment of FIG. 4 When the foam layer 6 different, especially different colored foams. or next to each other, there is an additional patterning effect that the attack elements 12 foam dragging from one area into an adjacent area, so that in the latter Traces of the first foam can be found and help shape the pattern.

In Fig. 6 shows another possible embodiment, in which the carrier 25 as extending across the web 1 and similar to FIG of movement.

generators 100, 200 driven tube is formed in which Piston / cylinder units 28 'are arranged, which at the end of their piston rod over a resilient connecting piece 35 wiper or displacement body 36 carry, the Engage in the foam layer 6 as it circulates, while bending on the surface 5 the connecting links 35 slip off and displace the foam. The piston / cylinder units 28 'can be distributed over the circumference of the carrier 25, if this is in one direction rotates continuously; when the carrier 25 has a reciprocating rotary motion executes, the piston / cylinder units are predominantly in one of the foam layers facing angular range to be arranged.

In Fig. 8 shows an embodiment in which a Suction pipe 38 extending across the foam layer with over the width of the web 1 distributed suction trunks 39, which extend into the foam layer 6 and vacuum off the foam in places or in traces. So the foam is not here displaced into neighboring areas, as in the previous embodiments, but rather downright removed from the foam layer 6. Of course, this can also be done with individuals Motion generators 10, for example according to FIG. 2 instead of the attack elements there 12 attack elements in the form of suction probes 39 may be provided.

In the embodiment according to FIG. 9 is with a motion generator 10, a spray device 44 is connected, which has a spray nozzle 40 from which a largely parallel bundled beam 41 of a gaseous, liquid or powdery treatment agent can be directed onto the foam layer 6. That Treatment agent can cause trace amounts of the foam to collapse, as in 42 indicated, or cause treatment effects in places or traces, which act on the web 1 in addition to the effect of the foam layer 6. In the exemplary embodiment, the motion generator 10 is in accordance with FIG. 2 or 1 fixed and the jet direction of the nozzle 40 can be controlled or arbitrarily pivot in all directions, as indicated in the figures In the embodiment of FIG. 10 is one with the motion generator 10 Light source 45 connected, which comprises a collimator 46, the a parallel light beam 47 is directed against the foam layer 6, which locally collapses due to the heating, as indicated by 48 Instead of the light source 45 with collimator 46, a Laser arrangement can be provided, which brings about a higher energy density, too in the embodiment according to FIG. 10, the direction of the beam 47 in the sense of FIG G. 7 can be adjusted by the motion generator 10.

In the two last-mentioned embodiments, the nozzle 40 forms with the beam 41 and the collimator 46 with the light beam 47, the attack element 12th

Another embodiment of the invention is shown in perspective in FIG shown, which a transversely extending across the web carrier 25 corresponding F i g. 3 and attack elements according to FIG. 5 has the balls 33 slip on the passing web 1 in the sense of that generated by the motion generator 100 Transverse movement according to arrow 26 and the superimposed reciprocating Rotary movement of the motion generator 200 back and forth according to the arrow 27 and experience additional displacements by the piston / cylinder units 28.

In the case of the essentially vertical piston / cylinder units 28, the balls 33 can be completely pulled out of the foam layer 6, as is in fig. 3 and 5 is shown, while the substantially horizontal Piston / cylinder units 28 bring the attached balls 33 closer to the carrier 25 or leave them off.

The foam layer 6 is in the embodiment of FIG. 11th generated by a slot nozzle 50, which extends over the entire width of the web 1 extends The foam layer 6 produced can move in the direction of the arrow 7 has been evened out over the surface 5 by means of doctor blade arrangements (not shown) before the attack elements 12 formed by the balls their pattern-forming Have an effect.

FIG. 12 shows a control for an arrangement according to FIG. it is suggested which allows the production of repeatable patterns.

A hydraulic pump 60 supplies pressure fluid via servo valves 61 and 62, respectively to the motion generator 100, which is designed as a hydraulic lifting cylinder, respectively. the motion generator 200, which is designed as a hydraulic rotary motor. the Servo valves 61, 62 are controlled by program curves 63, 64, 65 on endless belts 66, 67, 68 controlled. The endless belts 66, 67, 68 are driven by motors 69, 70, 71 with Specifically driven speed. The program curves 63, 64, 65 are from only schematically shown reading units 72, 73, 74 followed, which one of the Deflection output corresponding voltage or a corresponding current that amplifies and the setpoint generator 75,76,77 appears as the electrical setpoint value at the output. In the exemplary embodiment, there are two program curves for the motion generator 100 63, 64 are provided, which are superimposed in an adding unit 78 and become a resulting Setpoint can be processed. The setpoint at the outputs of the setpoint generator 75 or the adding unit 78 arrives at a setpoint / actual value comparator 79, which is used as the Another input signal is the position of the piston in the piston / cylinder unit formed motion generator 100 is inputted representing an electrical signal is, which is due to the transmission of the movement of the piston rod 80 to a Linear potentiometer 81 results in and in an actual value transmitter 82 in the appropriate input variable is converted for the setpoint / actual value comparator 79. So the servo valve 61 becomes in accordance with the difference between the current deflection value of the Program curve 63 corresponding setpoint and that representing the actual position Actual value controlled.

The motion generator 200 is correspondingly provided with a rotary potentiometer 83 connected, the output signal of which is processed in an actual value transmitter 84 and combined with the output signal of the setpoint generator 77 in a setpoint / actual value comparator 85 is input, which then controls the servo valve 62, which controls the rotation of the Carrier 25 determined. It goes without saying that the rotation by superimposing several Program curves can be modified similarly to program curves 63, 64.

Claims (19)

Claims: 1. Method for patterning a continuously leading material web with a treatment agent contained in a foam, in which the foam is transferred in one layer onto the web and onto the web a sample is attached to the foam, which identifies it, that the foam in the layer is uneven in places or in traces. 2. The method according to claim 1, characterized in that the foam is displaced in places or in traces. 3. The method according to claim 1, characterized in that the foam is removed in places or in traces. 4. The method according to claim 1, characterized in that the foam in places or in traces a gaseous, liquid or solid treatment agent for the foam or the web is added. 5. Device for patterning a continuously advancing material web according to claims 1 to 4 with a foam generating device and a foam application device, by means of which, across the width of the material web, the foam is applied to the material web in layer form can be applied, as well as a device for sampling the layer, characterized in that that the device has one above the web (1) arranged, at least one Movement generator (10, 100, 200) and an associated attack element (12) for unevenness of the foam layer (6) in places or in traces. 6. Device according to claim 5; characterized in that the Movement generator (10, 100, 200) several attack elements (12) is common. 7. Apparatus according to claim 6, characterized in that the attack elements (12) on a transversely to the web (1) arranged above the same, rotatable to and fro and mounted parallel to itself displaceable carrier (25) and the motion generator (100, 200) is connected to the carrier (25). 8. The device according to claim 5, characterized in that each Attack element (12) is assigned its own movement generator (10). 9. Device according to one of claims 5 to 8, characterized in that that at least one motion generator (-10, t00, 200) has a device for switching off or lifting (28) of the engagement element (12) from the web (1) is assigned. 10. Device according to one of claims 5 to 9, characterized in that that the engagement element (12) is a rod-like or strip-like member (31, 35), which protrudes at least up to the vicinity of the web (1). 11. The device according to claim 10, characterized in that the Attack element (31,35) is essentially rigid. 12. The device according to claim 10, characterized in that the Attack element (31, 35) is flexible. 13. Device according to one of claims 5 to 9, characterized in that that the engagement element (12) has a flexible tension member (32), optionally with a attached to one end pendulum body (33,34) 14. Apparatus according to claim 13, characterized in that the pendulum body (33, 34) on the web (1) rests. 15. Apparatus according to claim 13 or 14, characterized in that that the pendulum body is a ball (33). 16. Apparatus according to claim 13 or 14, characterized in that that the pendulum body is a body (34) delimited by at least one flat surface is. 17. Device according to one of claims 5 to 9, characterized in that that the engagement element (1L2) is connected to a suction line (38) Suction tube (39) is. 18. Device according to one of claims 5 to 9, characterized in that that the engagement element) is a spray device (44, 40), by means of which a narrow jet (41) of a gaseous, liquid or powdery treatment agent can be directed onto the foam layer (6). 19. Device according to one of claims 5 to 9, characterized in that that the attack element (12) is a light source (45, 46) by means of which a narrowly limited The invention relates to light or infrared rays which can be directed onto the foam layer (6) to a method of the type corresponding to the preamble of claim 1 and a device suitable for carrying out the method. The sampling is in the preferred embodiment of the invention a colored pattern, in which one or more coloring liquids in the foam are included. In addition to the coloring liquids, however, come as treatment agents also reservations applied in foam form, means that the handle or the structure affect the web, and the like, into consideration. The material web can be a textile material web, but also a fleece, a Be paper web, a plastic web or the like. DE-AS 22 14377 includes methods of the preamble lying type to the state of the art. The sampling depends on the treatment agents present in the layer. Different foams can also be used next to or on top of each other in the layer. A sampling can be achieved by squeegeeing the layer in places at a different height than in neighboring places. But the treatment failure is always due to the presence determined by the layer, d. H. an offer of the treatment agent in a right even amount, seen over the surface. The invention is based on the object of a method according to the preamble of claim 1 underlying type and design a corresponding device so, that a new and extensive modification of the resulting sample image is possible. According to the invention, this object is achieved in that the foam becomes uneven in the layer in places or in traces.