Device and method for treating textiles or leather

Abstract

The invention relates to a device for use in the treatment of textiles or leather with liquid, comprising a container having an inner wall with through-holes and surrounded by an outer wall that is arranged at a distance, covers that cover the end cross-sectional openings of the container, a drive which propels the container along a trajectory to reciprocate with a maximum acceleration of at least 20 m / s².

Description

[0001] The present invention relates to a device suitable for use in the treatment of textiles or leather, and to a method for treating textiles or leather that can be carried out with the device. The method can involve washing and / or dyeing the textiles or leather. The textiles or leather treated by the method can be clothing, which may be finished or semi-finished, or uncut, web-shaped, or cut textiles or leather. The textiles can be made of cotton, wool, synthetic fiber, flax, or a combination of at least two of these, and the leather can be raw or at least partially tanned. The method can include tanning and / or dyeing the leather.

[0002] It is generally known to rotate a perforated drum, rotatable around a horizontal axis, in a container in order to treat textiles or leather in the drum with liquids that are in the container.

[0003] DE 10 2013 109 482 A1 describes a drum for the wet treatment of textiles, driven about a vertical axis, to which a line is attached, one end of which opens into an annular channel attached to the drum, which radially surrounds the drum, and the other end of which opens closer to the axis.

[0004] US 1,981,453 A describes the conveying of liquid through textiles that are in contact with the wall of a rotating container, wherein the liquid is fed centrally into the container and, after passing through the textiles, exits through openings in the container wall. WO 98 / 07057 A1 describes mixing by moving a container along a path of motion with two areas of strong curvature or two reversal points.

[0005] DE 10 2018 215 084 A1 describes the production of a mass that has a continuous homogeneous phase by moving a container with the components of the mass back and forth along two axes at different frequencies.

[0006] A device according to the preamble of claim 1 is already known from US 381,883 A. The invention aims to provide an alternative device and a method for treating textiles or leather that can be carried out with a small volume of liquid.

[0007] The invention solves the problem with a device for use in the treatment of textiles or leather with liquid according to claim 1, and a method according to claim 17.

[0008] The device may have the following features: A container with an optional inner wall having through-holes and enclosed by a spaced-away outer wall, wherein the inner wall is preferably rigidly connected to the outer wall, with lids covering the terminal cross-sectional openings of the container, optionally with at least one movable line connected to the container, which is connected to at least one of the lids, optionally to the space formed between the inner wall and the spaced-away outer wall, a drive configured to drive the container to a reciprocating motion along a trajectory, wherein the plane in which the trajectory extends and in which the container is moved is preferably parallel to the cross-section of the container, and the drive configured to accelerate the container with a maximum acceleration of at least 20 m / s², preferably at least 30 m / s², or at least 50 m / s², or at least 100 m / s², e.g.to move the container along the trajectory at speeds of up to 600 m / s² or up to 500 m / s², optionally being configured to prevent the container from rotating during movement along the trajectory, in particular not rotating it about an axis perpendicular to the plane of the trajectory, optionally being configured, if the drive for movement along the trajectory does not move the container, to drive the container, e.g. by a second drive, to rotate it about an axis perpendicular to the plane of the trajectory.

[0009] The inner wall is preferably cylindrical, with its cross-section parallel to the plane of the trajectory curves; optionally, the inner wall has a hexagonal, octagonal, decagonal, dodecagonal, or polygonal cross-section. The inner wall spans the interior of the container. The terminal cross-sectional openings of the interior of the container, preferably including the terminal cross-sectional openings of the outer wall, are closed with covers, which preferably lie parallel to the plane of the cross-section spanned by the inner wall.

[0010] Preferably, the distance between the outer wall and the inner wall is 1 to 20 mm, more preferably 1 to 10 mm or up to 5 mm, e.g., 2 to 4 mm. The small distance between the inner and outer walls results in a small dead volume into which liquid can enter through the openings in the inner wall. From this dead volume, which is limited by the distance between the inner and outer walls, liquid can be drawn off through an optional, connected line, the container can be evacuated, or liquid or air, in particular air heated to, for example, 50 to 90°C, can be pumped into the container through the line.

[0011] Preferably, the cross-section spanned by the inner wall has a diameter that is 0.5 to 2 times the extent along the longitudinal axis perpendicular to the cross-section.

[0012] Textiles and leather are also referred to as fabrics here.

[0013] The cross-section, when moved back and forth along a trajectory curve (e.g., along at least two axes at an angle to each other and in the plane of the container's cross-section), causes the substances inside the container to move relative to the container wall. It is assumed that the intensive and effective penetration of the substances by the liquid during the process is due to the container's movement accelerating the substances within it relative to the inner wall at a rate exceeding 1 x g (acceleration due to gravity).

[0014] The container is driven to move back and forth along at least one trajectory, which can be generated by superimposing the back-and-forth movement along at least two axes that are at an angle to each other, wherein preferably two of the axes lie in the plane of the cross-section of the container, wherein the back-and-forth movement along each axis takes place at different frequencies and / or with phase offset.The trajectory can be generated by superimposing reciprocating motions along two or three axes with different frequencies and / or phase shifts, and comprises a sequence of trajectory segments, at least one of which, preferably each, includes or consists of exactly one complete reciprocating motion along the axis along which the reciprocating motion with the lower frequency occurs. The superimposed reciprocating motions with the higher frequency or the same frequency, optionally with phase shifts, are included along the other axis or axes. The lower frequency of the complete reciprocating motion forms the frequency of the sequence of trajectory segments.For each track segment, a frequency ratio of the back-and-forth movement along two axes of at most 1:20 or at most 1:15 or at most 1:10, at most 1:4 or at most 1:3 is preferred, more preferably between 1:1 and 1:2, even more preferably greater than 1:1 to 1:2 or up to 1:1.5, e.g. with a frequency ratio of 1:1.001 to 1:2 or up to 1:1.5.

[0015] In a trajectory generated by superimposing reciprocating motions along two axes at different frequencies and / or with a phase shift, the axes preferably lie in the plane of the container's cross-section. In a trajectory formed by superimposing reciprocating motions along three axes, two of the axes preferably lie in the cross-sectional plane of the container, and the third axis is at an angle to this cross-sectional plane. The lowest frequency of the complete reciprocating motion along one of the three axes determines the frequency of the sequence of trajectory segments. Generally, the linear axes of motion are preferably perpendicular to each other.

[0016] In general, the device is configured to drive the container along a trajectory formed by the superposition of the reciprocating motions of at least two overlapping linear axes at an angle to each other, wherein the reciprocating motions along the linear axes occur at different frequencies and / or with a phase shift. The linear axes along which the superimposed reciprocating motions at different frequencies and / or with a phase shift occur form the trajectory along which the reciprocating motion of the container takes place, for which the device is configured.

[0017] By moving the container along the trajectory, the device is designed to accelerate the substances relative to the container, so that substances contained in the container come into intensive contact with liquid or air through acceleration against the container wall.

[0018] Because the trajectory can be adjusted or predetermined by the different frequencies and / or the phase shift of the superimposed movements along the linear axes, the device is designed to move the container back and forth along the trajectory and to move the substances inside relative to the container.

[0019] The trajectory, which can be adjusted or predetermined by varying the frequencies and / or phase shift of the superimposed movements along at least two linear axes, accelerates the substances relative to the container. The back-and-forth motion of the container drives the substances and any liquid contained within it to move against the inner wall of the container.

[0020] According to the invention, the container is not driven by rotation, at least during movement along the trajectory.

[0021] Preferably, the container is driven exclusively to a reciprocating motion along a trajectory curve. Optionally, it can also be driven to rotate when the container is not moving along the trajectory curve, and in particular, optionally, with a time offset from the reciprocating motion along the trajectory curve, it is driven exclusively by rotation. Optionally, the container is mounted to rotate freely about an axis perpendicular to the plane of the trajectory curve and is not driven by rotation about its longitudinal axis.

[0022] The trajectory allows the angle of incidence and refraction of the substances against the container wall to be determined. Furthermore, the device is optionally configured to move the container along the trajectory with adjustable or predetermined acceleration and velocity. Because the device is configured for an adjustable or predetermined trajectory and / or adjustable or predetermined acceleration and / or adjustable or predetermined velocity along the trajectory of the reciprocating movement of the container, the substances and any liquid contained within the container are driven relative to the container with an adjustable or predetermined maximum acceleration and / or adjustable or predetermined velocity, allowing for a predetermined or continuous adaptation of the process to the substances being treated.

[0023] In general, a trajectory can be formed by at least two superimposed individual oscillations; preferably, a trajectory resembles the trajectory generated by superimposing back-and-forth movements along at least two linear axes of motion at different frequencies and / or by phase shift. A back-and-forth movement along a trajectory that resembles the back-and-forth movement along superimposed linear axes of motion exhibits different frequencies and / or a phase shift relative to each other. Optionally, the trajectory can be circular or exclude this possibility.

[0024] The frequency difference can be, for example, at least 0.01 Hz and / or 0.01% to 900%. The phase shift of the back-and-forth movements along the linear axes can be, for example, from 0.01° to 180°, preferably 1° to 179° of 360°, which corresponds to a complete back-and-forth movement. Here, 0.01° to 180° of a complete back-and-forth movement of 360° corresponds to 0.0028% to 50% of a complete back-and-forth movement, and 1° to 179° of 360° corresponds to 0.28% to 49.7% of a complete back-and-forth movement.

[0025] The linear axes of motion are, for example, perpendicular or at another angle, e.g., 5° to 85°, to each other, particularly in the plane of the container's cross-section or perpendicular to a longitudinal axis of the container. Optionally, the trajectory includes segments with at least one straight section, the end of which is, for example, a vertex where the substances are accelerated relative to the container wall.

[0026] To adjust different frequencies and / or phase shifts of the superimposed reciprocating movements along at least two linear axes of motion, these movements can be coupled by a gearbox or cam track and driven by a motor. A motor-driven gearbox that adjusts the reciprocating motion along the path can have a fixed gear ratio between the superimposed movements along each axis, or an adjustable gear ratio, e.g., a continuously or step-shifting gearbox. Optionally, the gearbox can be slip-driven, e.g., a belt drive or a friction drive.

[0027] The output speed of the gearbox that drives the reciprocating motion of the container is preferably at least 0.5 Hz, more preferably at least 2.5 Hz, at least 5 Hz, e.g. up to 10 Hz, e.g. 4 Hz to 40 Hz, up to 30 Hz, up to 20 Hz or up to 10 Hz. The output speed of the gearbox is equal to the frequency of the reciprocating motion.

[0028] Alternatively, the reciprocating motion along each of the linear axes of motion can be driven by a separate motor, wherein, for the purposes of the invention, the lower output speed is the frequency of the reciprocating motion and constitutes the frequency of the sequence of path segments. In each embodiment, the speed of each drive motor can be controlled, fixed, or variable over the duration of the process.

[0029] The device allows the trajectory to accelerate the substances in a defined direction to a specific location on the inner wall of the container. The geometry of the container, in conjunction with the trajectory, can support the washing process, allowing the trajectory to be adjusted depending on the shape and size of the container's cross-section.

[0030] Optionally, the device is configured to change the trajectory of the reciprocating motion and / or the acceleration and / or speed of the reciprocating motion during the process, e.g., in a first phase, to set the reciprocating motion along a first trajectory and with a first acceleration and speed, and in a subsequent second phase, to set the reciprocating motion along a modified trajectory and / or with a modified acceleration and / or speed.

[0031] Optionally, the back-and-forth movement can be linear in the first phase and along overlapping trajectories in the second phase. The trajectory can be determined, for example, by a gear system that drives the movement of the container.

[0032] The device allows for a predetermined or dynamically variable and directed acceleration of the substances relative to the container by adjusting the trajectory and accelerating the reciprocating motion of the container.

[0033] In an embodiment in which the container can be driven in a controlled linear reciprocating motion in a first phase, the device is configured to move substances and optionally liquids perpendicularly against the container wall with a controllable acceleration that is significantly greater than the acceleration due to gravity and therefore essentially independent of the acceleration due to gravity, e.g. with an acceleration maximum of at least 15 m / s², preferably 25 m / s², preferably at least 50 m / s², or at least 100 m / s², or at least 200 m / s², or at least 350 m / s², e.g., up to 500 m / s².

[0034] In general, the device can be configured to accelerate the container with an acceleration maximum of at least 15 m / s², 20 m / s², or at least 25 m / s², e.g. at least 50 m / s², preferably up to 100 m / s², preferably 200 m / s², e.g. up to 300 m / s² or 450 m / s², up to 260 m / s² or up to 250 m / s² along the trajectory, e.g. at a vertex of the trajectory.

[0035] The container is preferably driven to a back-and-forth motion with an acceleration maximum of at least 0.5 m / s² or at least 1 m / s² or at least 2 m / s², at least 3.5 m / s², preferably at least 60 m / s², more preferably at least 100 m / s², at least 150 m / s², at least 160 m / s², at least 200 m / s², e.g. up to 300 m / s² or 450 m / s², up to 260 m / s² or up to 250 m / s² along each of two axes. The container is generally preferably driven in combination with acceleration to an average speed of at least 0.5 m / s, preferably at least 2 m / s, more preferably at least 3.5 m / s, e.g. up to 10 m / s or up to 20 m / s or up to 6 m / s, e.g. 3 to 4 m / s, each along one of the axes, preferably along each axis. The path of movement along at least one axis, preferably along each axis, is e.g. 0.1 cm to 24 cm.

[0036] The container can, for example, be driven to a back-and-forth motion extending along each axis over a distance of at least 1 mm or 2.5 mm, at least 1 cm, preferably at least 2 cm or at least 5 cm, at least 10 cm or at least 15 cm, for example, up to 100 cm, up to 50 cm, up to 30 cm or up to 20 cm. More preferably, the back-and-forth motion of the container is harmonic. The back-and-forth motion of the container can be linear in a first phase; generally, the trajectory is non-linear and can be, for example, sinusoidal, triangular, loop-shaped, pretzel-shaped, or arc-shaped, for example, following a so-called Lissajous figure or hypocycloid, which preferably lies in the plane or is two-dimensional, optionally three-dimensional.Preferably, the back-and-forth movement is linear in a first phase and, in a second phase, follows a trajectory along at least two non-linear path segments, each containing at least one vertex. This is because, in general, a non-linear trajectory, e.g., movement along a path whose segments each have at least one vertex, promotes the impact of materials perpendicularly on the inner wall of the container, and optionally, at least in sections, a uniform and intensive rolling or sliding of the materials along the optionally structured inner wall.

[0037] Preferably, the reciprocating motion comprises the reciprocating motion along overlapping trajectories, which include at least two, preferably at least three, and more preferably at least four different trajectories that transition into one another in a controlled manner. Each of the axes of motion along which the movements superimpose to form a trajectory can be linear or arc-shaped, so that the non-linear motion of the container is generated from the superposition of the movements along two axes of motion. The container wall is the fully enclosed wall of the container, extending around a longitudinal axis and between opposing end cross-sections or lids attached thereto. The container optionally has a circular cross-section extending around a longitudinal axis and spanned by the container wall.Generally, the terminal cross-sectional openings of the container are preferably covered by a lid, of which at least one may optionally have a through-opening.

[0038] It is generally preferred that the trajectory has at least one, preferably at least two, or at least three trajectory segments, each having at least one vertex where it changes direction by at least 90°, more preferably by at least 120°, and even more preferably by at least 180°. It is generally preferred that at least one trajectory segment has a vertex where the direction of the trajectory segment changes by at least 90°, more preferably by at least 120°, and even more preferably by at least 180° or at least 210°, e.g., within a maximum of 24.5%, 24%, 23%, 22%, 21%, 20%, 15%, or 10%, more preferably by a maximum of 5%, 3%, 2%, or 1% of the length of a trajectory segment. This is because a vertex of the trajectory leads to a strong relative acceleration of the substance against the container.The vertices and intermediate sections of a path segment are determined by the frequency difference and / or the phase relationship of the superimposed reciprocating movements along at least two axes. Generally, the device can be configured to change the frequency difference and / or the phase relationship during the reciprocating movement.

[0039] The control of the container's drive is optionally dependent on the signal from a sensor, preferably an acoustic sensor, which detects vibrations, particularly noises, of the container during its reciprocating motion, especially during the first and / or second phase. The acoustic sensor can, for example, be mounted on the outer surface of the container or positioned at a distance from the container in a location along its reciprocating path. Preferably, the acoustic sensor is positioned a short distance, for example, 0.5 to 5 cm, from the apex of the reciprocating motion, for example, on a frame against which the container is moved along its trajectory. The acoustic sensor can be a vibration sensor, for example, a microphone.In this embodiment, the control of the back-and-forth movement can be configured to, upon change of the signal emitted by the acoustic sensor, allow a predetermined deviation within a predetermined time of back-and-forth movement, and / or upon reaching a predetermined signal emitted by the acoustic sensor, to cause the back-and-forth movement to proceed with a changed speed and / or with a changed phase offset, and / or to control from a linear movement into a trajectory curve, in particular to control from a first phase to a second phase of the back-and-forth movement.

[0040] The sensor can also be an optical sensor attached to the container, e.g. a turbidity sensor.

[0041] Optionally, a device for generating an electrical voltage is attached to the container, in particular a device comprising a magnet and a coil arranged to move relative to the magnet, which are configured to generate an electrical voltage when moving relative to each other. This device is preferably connected by means of an electrical conductor to a transmitter attached to the container in order to supply the transmitter with an electrical voltage. The transmitter is preferably connected by means of a data conductor to at least one of the sensors in order to receive sensor signals. The transmitter is, for example, configured to transmit received sensor signals. Furthermore, the sensor can be connected by means of an electrical conductor to the device for generating the electrical voltage.In this embodiment, the device is configured so that a sensor and a transmitter attached to the container can be energized by the device to generate an electrical voltage as soon as the container is moved along the trajectory. Accordingly, the device can be designed without an electrical cable extending between a frame against which the container is moved and the container itself.

[0042] Generally, the path of movement is along at least one axis, preferably along each axis, e.g. 5 cm to 24 cm.

[0043] The inner wall and the outer wall can be made of different or the same materials, either metal (preferably stainless steel), plastic, or ceramic.

[0044] Optionally, an air supply line is connected to the container, preferably with a temperature of 30 to 90 °C or up to 60 °C, to dry substances in the container while it is moved along overlapping trajectories or while it is moved linearly back and forth. Preferably, an outlet line, which can be, for example, the line connected to the space between the inner and outer walls, is connected to the container to remove moist air.

[0045] The through-holes in the inner wall can be round bores or elongated holes extending parallel or perpendicular to the cross-section of the interior, or extending at an angle of >0° to <90° to the cross-section of the interior. Optionally, or alternatively, the through-holes can extend along radials or at an angle of 10° to 45° to radials radiating from the longitudinal axis of the cross-section spanned by the inner wall. Optionally, the through-holes have a constant cross-section or a cross-section that widens with increasing distance from the longitudinal axis. Preferably, the through-holes have a chamfer, preferably arcuate, to avoid sharp edges adjacent to the cross-section. In a simple embodiment, the inner wall can be a grid with the through-holes forming the spaces between the webs.

[0046] The inner wall can be connected to the outer wall by supports extending across the space between the inner and outer walls. The inner wall can be connected to the outer wall by resting against supports that span the gap between the inner and outer walls. Supports between the inner and outer walls can be integral with the outer wall or the inner wall, or connected to one or both of them, e.g., soldered, welded, or bonded. Alternatively, supports can be arranged in a form-fit between the inner and outer walls, e.g., as at least one separate element. The supports can be designed as webs extending parallel to the cross-section of the container interior, e.g., ring-shaped or angular like the container interior, or as webs extending at an angle to the cross-section of the container interior.The supports extend in a spiral shape, preferably as webs, perpendicular to the cross-section of the container interior, forming channels that open at a distance from at least one, preferably both, terminal cross-sectional surfaces of the space between the inner and outer walls. The supports can also be formed by a grid in which a portion of the webs has a lower height than the distance between the inner and outer walls to allow the passage of liquid and air. Generally, the supports, particularly those designed as webs, form the dead volume through which liquid, and optionally air, can be supplied and / or removed separately from the laundry, for example during vacuuming or drying, particularly by means of pipes connected to the space between the inner and outer walls.

[0047] The method carried out using the device has the advantage that, when the container moves along overlapping trajectories, especially at high acceleration maxima of substances relative to the container or the inner wall, the substances contained therein are intensively contacted with the liquid, e.g., kneaded, and can roll off the inner wall, so that the substances preferably rub against each other and less against the inner wall of the container.

[0048] Additionally, fine air bubbles are created which accelerate the cleaning process when the fibers are rinsed.

[0049] The invention will now be described in more detail using an example with reference to the figures shown schematically in Fig. 1 an exemplary container and Fig. 2 the container of Fig. 1 average AA show.

[0050] In the figures, identical reference numbers denote functionally equivalent elements.

[0051] The Fig. 1Figure 1 shows a container 1, preferably having a circular cross-section, with a first access opening 4 located along the longitudinal axis 2 on a first cover 3 and a second access opening 6 located along the longitudinal axis 2 on the opposite second cover 5. Pipes can be connected to the access openings 4 and 6, for example, for supply and exhaust air during drying. The first cover 3 and the second cover 5 each cover an end section of the container 1. These covers 3 and 5 extend in a funnel shape, or alternatively in the plane of the container cross-section, from the container 1 to one of the access openings 4 and 6. Alternatively, the container 1 can have only one access opening 4 and 6, located in one of the covers 3 and 5, so that filling and emptying of the container 1 can be carried out through only one common access opening 4 and 6.Preferably, one of the lids 3, 5 is detachably attached to the container 1 in order to be able to fill and remove textiles or leather from the container.

[0052] A sensor 30, attached to the container 1, is connected by an electrical line 31 to a voltage-generating device 32, also attached to the container 1, which has a magnet movable relative to a coil. A transmitter 33 is connected to the sensor 30 by a data line 34 and to the voltage-generating device 32 by an electrical line 35.

[0053] The in Fig. 2The longitudinal section through the container 1 shows the through-holes 10 in the inner wall 11. The inner wall 11 is enclosed by the outer wall 12. The outer wall 12 is spaced apart from the inner wall 11 by the supports 13. The connection 14 opens into the space between the inner wall 11 and the outer wall 12, e.g., to introduce liquid or to extract liquid or air. Example: Treating substances

[0054] As an example of fabrics, 5 kg of cotton fabric rolls were placed in a container with a cylindrical inner cross-section of 50 cm in diameter and a longitudinal extent of 80 cm. The inner wall consisted of stainless steel sheeting and had chamfered holes of 2 mm in diameter, spaced 2 cm apart. The outer wall was a stainless steel cylinder, spaced 3 mm apart, with supports in between formed by plastic struts inserted into the space approximately parallel to the longitudinal axis of the container.

[0055] The terminal cross-sectional surfaces were sealed with clamped lids, one of which had an attached hose for supplying water and detergent. A nozzle with a hose attached to it was connected to the outer wall, which was in contact with the space between the inner and outer walls.

[0056] Two liters of water containing detergent were poured into the container through the hose attached to the lid. The container was then moved back and forth along 30 cm long trajectories for 10 to 30 minutes. These trajectories were generated by moving the container back and forth along a first linear axis at 4 Hz and along a second linear axis, offset by 90° to the first, at 5 Hz.

[0057] In another experiment, dye was dispersed in the water instead of detergent to color the fabric. Before adding the water, the container was vacuum-sealed using a vacuum pump connected to the hose.

[0058] The back-and-forth movement was then stopped and liquid was drawn off through the hose; optionally, the container was moved along a circular path so that the laundry rolled off the inner wall and liquid was forced out of the fabric into the space between.

[0059] Then, clear water was poured into the container twice, and each time water was drawn off through the hose while moving the container in a circular motion, in order to rinse the fabric in two steps. Reference numbers:

[0060] 1 Container 2 Longitudinal axis 3 First lid 4 Access opening 5 Second lid 6 Second access opening 10 Through holes 11 Inner wall 12 Outer wall 13 Supports 14 Connection 15 Cable 30 Sensor 31 Electrical cable 32 Electrical voltage generation device 33 Transmitter 34 Data cable 35 Electrical cable

Claims

1. Device for use in the treatment of textiles or leather with liquid, comprising a container (1) having an inner wall (11) which has through-holes (10) and is surrounded by a spaced outer wall (12), with lids (3, 5) which cover the terminal cross-sectional openings of the container (1), with a drive which is set up to drive the container in a plane along a trajectory curve, characterized in that the trajectory curve comprises a sequence of path segments, which can be generated by superimposing the reciprocating movement along at least two axes with different frequencies and / or with phase offset and which each comprise exactly one complete reciprocating movement along the axis along which the reciprocating movement takes place with the lower frequency, wherein at least during movement along the trajectory curve the container (1) is not driven to rotation.

2. Device according to claim 1, characterized in that a line (15) is connected to the interspace formed between the inner wall (11) and the outer wall (12) spaced therefrom.

3. Device according to one of the preceding claims, characterized in that the path segments have an apex at which they change their direction by at least 90° within a maximum of 24,5% of the length of a path segment.

4. Device according to one of the preceding claims, characterized in that the plane in which the trajectory curve extends and in which the container (1) is moved lies parallel to the cross-section of the container (1).

5. Device according to one of the preceding claims, characterized in that the container (1) can be driven by a second drive to rotate about its longitudinal axis (2) perpendicular to the plane of the trajectory curves.

6. Device according to one of the preceding claims, characterized in that it is set up to drive the container (1) to rotate about its longitudinal axis (2) only when the drive for movement along trajectory curves does not move the container (1).

7. Device according to any one of claims 1 to 4, characterized in that the container (1) is not rotatable.

8. Device according to any one of claims 1 to 5, characterized in that the container (1) is freely rotatable.

9. Device according to one of the preceding claims, characterized in that the difference in frequencies is at least 0.01 Hz and 0.01% to 900% and the phase offset is 0.0028% to 50% of a complete reciprocating movement.

10. Device according to one of the preceding claims, characterized in that the terminal cross-sectional openings of the container (1), including the terminal cross-sectional openings of the outer wall (12), are closed with lids (3, 5) which lie parallel to the plane of the cross-section which is spanned by the inner wall (11).

11. Device according to one of the preceding claims, characterized in that a line for supplying air is connected to the container (1) and an outlet line is formed by the line (15) connected to the interspace between the inner and outer walls (11, 12).

12. Device according to one of the preceding claims, characterized in that the inner wall (11) is connected to the outer wall (12) by supports (13) which extend over the interspace between the inner and outer walls.

13. Device according to claim 12, characterized in that the supports (13) are arranged having only positive fit as at least one separate element between the inner and outer walls (11, 12).

14. Device according to one of the preceding claims, characterized by a sensor (30) which is connected to a controller which is set up to control the frequency of the reciprocating movement and / or the acceleration of the container (1) during the reciprocating movement in dependence from the signal from the sensor (30).

15. Device according to claim 14, characterized in that the sensor (30) is an acoustic sensor which is attached to the container (1) or is fixed on a frame on which the container (1) is guided for reciprocating movement at a distance from an inflection point of the trajectory curve.

16. Device according to one of claims 14 to 15, characterized in that the sensor (30) is attached to the container (1) and is connected to the transmitter (33) for transmitting sensor signals and characterized by a device (32) attached to the container having a magnet and a coil arranged movably relative to the magnet, which are set up to generate electrical voltage when moving relative to one another and by means of an electrical line (31) are connected to a transmitter (33) attached to the container (1).

17. Process for treating textiles or leather with liquid, in particular in a device according to one of claims 1 to 16, comprising the steps of filling textiles or leather into an inner volume spanned by a container (1), filling liquid into the container (1) through a line connected to the container (1), reciprocatingly moving the container (1) along a trajectory curve which comprises a sequence of path segments which can be generated by superimposing the reciprocating movement along at least two axes with different frequencies and / or with phase offset and which each comprise exactly one complete reciprocating movement along the axis along which the reciprocating movement takes place with the lower frequency and wherein at least during the movement along the trajectory curve the container (1) is not driven to rotate.

18. Process according to claim 17, characterized in that the interior space is spanned by an inner wall (11) arranged in the container (1), which inner wall has through-holes (10) and is surrounded by a spaced outer wall (12) of the container.

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