Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
  • D06F39/02—Devices for adding soap or other washing agents
  • D06F39/024—Devices for adding soap or other washing agents mounted on the agitator or the rotating drum; Free body dispensers

Definitions

• the invention relates to a device for dosing a treatment agent which can be introduced into a container via a filling opening via a plurality of outlet openings of the container into a liquid surrounding the latter.
• the object of the invention is to provide a solution which enables simple metering of liquid or liquefiable treatment agents into a surrounding liquid, precisely adapted to the respective application, in particular over longer periods of time.
• This task is performed in a device of the type Drawn type according to the invention in that the outlet openings of gap-shaped spaces in partial areas of the otherwise closed container are formed between a number of layer-like mutually arranged thin plates and / or foils, the gap-shaped spaces between the individual plates and / or films have such a size that, depending on the respective plate and / or film materials, capillary transport of the surrounding liquid into the container to dissolve a powdery treatment agent and to transport the treatment agent dissolved in this way or one into the container entered liquid treatment agent takes place from the inside of the container to the surrounding liquid.
• treatment agents can be used in any commercially available errm, ie, in addition to liquid concentrates, powder compacts or other suitable solids, since in the case of powdery solids, the liquid surrounding the container, mostly water, first penetrates through the capillary-active plate or film layers into the interior of the container, wherein the powdery treatment agent acts as a narrower capillary with a higher potential, which extracts the liquid originating from the surrounding liquid into the plate or film layers forming a further capillary with lower potential. sucks.
• an initially powdery treatment agent is dissolved by penetration of the surrounding liquid or if a liquid treatment agent in high concentration is introduced into the container from the start, then the treatment agent present in high concentration is diffused out through the gap-shaped spaces in the capillary-active plate or film layers , ie capillarity and diffusion overlap, shear forces from the ambient liquid serving as the driving force for the capillarity.
• the speed of the diffusion exchange and the capillary transport depends on a number of parameters, such as the mechanical liquid movements, the temperature, the concentration gradient, the geometry of the plates or foils and, of course, the solubility of the treatment agents, which are initially in powder form.
• the delivery of the treatment agent to the ambient liquid can largely be optimally adapted, in particular in such a way that a standard detergent initially penetrates the surrounding liquid or wash liquor relatively quickly and corresponding to consumption or loss of effectiveness the detergent in the wash liquor detergent is replenished into the surrounding liquid or wash liquor over a longer period of time at an approximately constant rate.
• the driving force for " replenishment is the concentration gradient between If the internal and external solution is used, the consumption of the treatment agent in the external solution directly generates an increased replenishment.
• the container according to the invention is not completely emptied, ie there is generally still a concentrate inside and is available for further use.
• the capillary pressure counteracts the liquid flow from inside to outside and ensures the establishment of an equilibrium state.
• the individual plates or foils can be connected to one another at least at two mutually opposite edges and / or by spot welding or gluing, in which case the connecting points are expediently evenly distributed over the plate surface.
• the gap-shaped interspaces can have a height of 5 to 150 ⁇ m and the plates or foils can have a thickness of 0.001 mm to 2 cm, a thickness of 0.1 to 0.2 mm being preferred.
• the plates or individual foils can also consist of different materials and the plate or foil surfaces to form the gap-shaped intermediate Spaces can be profiled in order to improve the liquid transport accordingly.
• the individual plates or foils can also have different surface profiles.
• a cap region of the container adjoining the ring-shaped plate or foil package for entering the treatment agent can then be evident, preferably by means of a screw connection between the adjoining regions.
• the jacket region of a cylindrical container can be formed from correspondingly concentrically arranged or spirally wound foils, with the exception of the outermost foil layer, openings extending radially outward from the interior of the container such that a Capillary liquid transport is possible through these openings from the inside of the container to the outside via the front edges of the gap-shaped spaces and vice versa.
• the end faces of the cylindrical container for loading purposes be evident.
• FIG. 1 is a spherical device according to the invention in a perspective view
• FIG. 3 is a perspective view of a device according to the invention with the front cover removed;
• 6 - 8 are comparative diagrams of the delivery rates according to the invention and the prior art according to DE-OS 35 12 083.
• the spherical container shown in FIGS. 1 and 2, designated overall by 1, has in a large circle Area a number of annular plates 2, which form gap-shaped intermediate spaces 3 between them.
• a cavity 4 is made ⁇ for holding a treatment agent is within the ringfömigen plates, the einglall ⁇ by a removable closure cap 5 bar, the closure cap -.obei not shown in detail in imputed W ⁇ else most easily by Screw connection to open and close with a disc-shaped intermediate piece 6 of the container.
• a powdered treatment agent for example detergent
• the closure cap 5 is closed and the container is then placed in a household washing machine, surrounding water penetrates through the gap-shaped intermediate spaces 3 by capillary transport into the Cavity 4, the powder-containing product in this quasi acts as a suction means.
• a reversal of the liquid movement then begins, with capillarity and diffusion overlapping, as has already been explained in more detail above. The situation is similar if a liquid product in high concentration is introduced into the cavity 4 of the container from the outset. In the embodiment described in FIGS.
• the cylindrical region of a container denoted overall by 7, is formed from a spirally wound film 8, with intermediate spaces 9 running between the individual film layers.
• the hollow interior formed in this way Room 1U is closed at the lower end according to FIG. 3 with a fixed closure piece 11 and at the upper end with a screw socket 12, onto which a screw cap 13 can be screwed, in such a way that a treatment agent with the cap 13 removed into the cavity 10 entered and this can then be closed again by screwing on the cap.
• Openings 14 extend from the inside of the container through the film layers to the outside, with the exception of the outermost film layer, as is particularly shown in FIG. 5, such that liquid flows through the openings 14 from the inside of the container into the gap-shaped interspaces 9 between the individual film layers 0 enter and can be released to the surrounding liquid by capillary transport at the upper and lower end edges 15 and vice versa.
• the mechanism of action is the same, v / ie already described above in connection with the embodiment according to FIGS. 1 and 2.
• a spherical hollow body was used essentially according to FIGS. 1 and 2 of the present application, with an outer diameter of approximately 48 mm and a cavity of approximately 20 cm. 10 plastic capillary plates with a thickness of 0.5 mm and a distance between the plates of 0.01 mm were used.
• the dye Maxilon Brillantrot (Ciba Geigy) was used in 1% dilution.
• the relative release rate was measured with the aid of transmission measurements in the wavelength interval 510 nm to 530 nm.
• Example 1 a 1% dye was labeled Liquid detergent with a dynamic viscosity of
• the relative delivery rate drops from the initial maximum value to a reduced level that lasts for nearly 60 minutes. at 10%.
• the release rate is measured when using a powdery ingredient (equal parts of cooking salt and urea with 1% dye; total amount 30g). 7 shows in curve 1 the time course of the delivery of the ingredient to the surrounding liquid (under identical conditions as in example 1). In contrast, curve 2 shows the time behavior of the delivery rate for the washing ball according to DE-OS 35 12 083 ..
• the delivery rate in the device according to the invention remains at more than 30% of the maximum value for more than 1 hour, while according to curve 2 in the washing ball according to DE-OS 35 12 083 after about 10 minutes.
• the solution in the interior of the washing ball has an almost identical composition as the external solution.
• Example 3 the release rate is measured using an aqueous 1% dye solution with a dynamic viscosity of about 25 mPas, and zv / ar under the same conditions as in Example 1.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Detergent Compositions (AREA)
• Closures For Containers (AREA)
• Extraction Or Liquid Replacement (AREA)
• Basic Packing Technique (AREA)
• General Preparation And Processing Of Foods (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6370563

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (5)

Citations (3)

• 1988
  • 1988-12-30 DE DE3844368A patent/DE3844368C1/de not_active Expired - Fee Related
• 1989
  • 1989-12-21 WO PCT/EP1989/001586 patent/WO1990007605A1/de unknown
  • 1989-12-28 CA CA002006870A patent/CA2006870A1/en not_active Abandoned
  • 1989-12-29 ES ES19898903963U patent/ES1012701Y/es not_active Expired - Fee Related

Patent Citations (3)

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