Method for processing laundry, and laundry treatment device suitable for carrying out the method

• US 9,284,678 B2
• Filed: 08/28/2009
• Issued: 03/15/2016
• Est. Priority Date: 09/22/2008
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Inventors: Hanau, Andreas, Schaub, Hartmut, Schulze, Ingo
• Primary Examiner(s): Barr, Michael
• Assistant Examiner(s): Shahinian, Levon J
• Application Number:
  US13/063,223
• Publication Number:
  US 20110162152A1
• Time in Patent Office: 2,391 Days
• US Class Current: 1/1
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence
• CPC Class Codes: D06F 39/028 Arrangements for selectively supplying water to detergent compartments
• CPC Class Codes: D06F 39/083 Liquid discharge or recirculation arrangements
• CPC Class Codes: D06F 58/203 Laundry conditioning arrangements

Abstract

A method for applying a processing composition to laundry in a laundry treatment appliance with a rotatably mounted drum is provided. The method includes setting a predefined residual moisture content in the laundry by adding water and by rotating the drum. The method further includes applying a processing composition to the laundry in liquid form or in the form of fine droplets. The processing composition is sprayed onto the laundry by an introduction apparatus while the drum is moved at a speed at which the laundry lies against the drum or at a faster speed.

Claims

1. A method for applying a processing composition to laundry in a laundry treatment appliance having a drum that is rotatably mounted, the method comprising:

setting a predefined residual moisture content in the laundry by adding water and by a first rotation of the drum;

applying a processing composition to the laundry in one of liquid form and in the form of fine droplets at a time after the first rotation of the drum;

fixing the processing composition to the laundry;

wherein the processing composition is sprayed onto the laundry by an introduction apparatus while the drum is rotated at least at a speed at which the laundry is forced against the drum due to centrifugal forces; and

wherein the processing composition is not a detergent.

2. The method of claim 1, wherein the water is added in a rinse step and wherein the first rotation of the drum takes place as one of the water is being pumped away and after the water has been pumped away.

3. The method of claim 1, wherein the predefined residual moisture content is set by the first rotation of the drum at the speed at which the laundry lies against the drum.

4. The method of claim 1, wherein the first rotation of the drum is performed at one of equal to or greater than 100 revolutions per minute.

5. The method of claim 4, wherein the first rotation of the drum is performed at between 100 revolutions per minute to 150 revolutions per minute.

6. The method of claim 4, wherein the first rotation of the drum is performed at at least 230 revolutions per minute.

7. The method of claim 1, wherein the processing composition is distributed in the laundry by a second rotation of the drum.

8. The method of claim 7, wherein the second rotation of the drum is performed at equal to or greater than 100 revolutions per minute.

9. The method of claim 1, wherein, in order to apply the processing composition to the laundry, the drum is moved in a first substep at least at the speed at which the laundry lies against the drum and, in a second substep, at a reverse mode speed in a reverse mode that is lower than the speed at which the laundry lies against the drum;

and wherein the processing composition is only discharged by the introduction apparatus when the drum is moved at one of the speed at which the laundry lies against the drum and faster than the speed at which the laundry against the drum.

10. The method of claim 1, wherein the processing composition is fixed after being applied to the laundry.

11. The method of claim 1, wherein the laundry is subjected to a pretreatment step before applying the processing composition to the laundry.

12. The method of claim 11, wherein the pretreatment step is a chemical activation of a surface of the laundry.

13. The method of claim 1, wherein the processing composition is bonded to the surface of the laundry, or the processing composition is introduced between fibers of the laundry, or the processing composition is bonded to the surface of the laundry and introduced between the fibers of the laundry.

14. The method of claim 1, further comprising a washing phase in which the laundry is cleaned with the aid of laundry detergent, the washing phase occurring prior to the first rotation of the drum.

15. The method of claim 1, wherein the processing composition comprises an impregnating agent, a dye, a starch, a cyclodextrin or a microcapsule.

16. The method of claim 1, wherein the processing composition is fixed with a heat treatment or a chemical treatment after the drum is rotated at the speed at which the laundry is forced against the drum due to centrifugal forces.

17. The method of claim 1, further comprising chemically activating a surface of the laundry prior to applying the processing composition.