Method for manufacturing a dishwasher with at least one, especially prefabricated, bitumen mat for deadening of noise and/or sound absorption of a component

• US 8,556,025 B2
• Filed: 07/07/2011
• Issued: 10/15/2013
• Est. Priority Date: 07/16/2010
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Fritz, Heiko, Schwenk, Bernd
• Primary Examiner(s): San Martin, Edgardo
• Application Number:
  US13/177,602
• Publication Number:
  US 20120013228A1
• Time in Patent Office: 831 Days
• Field of Search: 181/200, 181/201, 181/202, 181/290, 181/285, 181/294, 134/56.D, 134/58.D, 134/57.D, 156/337, 156/326, 156/325
• US Class Current: 181/200
• CPC Class Codes: A47L 15/4209 Insulation arrangements, e.g. for sound damping or heat insulation
• CPC Class Codes: A47L 15/4246 Details of the tub A47L15/4272 takes precedence; insulation arrangements A47L15/4209
• CPC Class Codes: C09J 2400/163 in the substrate
• CPC Class Codes: C09J 2495/00 Presence of bitume
• CPC Class Codes: C09J 2495/006 in the substrate
• CPC Class Codes: C09J 5/06 involving heating of the applied adhesive

Abstract

In a method for manufacturing a dishwasher having at least one component and at least one bitumen mat provided on the component for noise deadening and/or sound insulation of the component, a usable, flowable and reactively-hardenable bituminous mixture is applied upon the bitumen mat and/or component such as to form at least one adhesive bead. The adhesive bead is partly surrounded by at least one area which is free of the reactively-hardenable bituminous mixture. Before the hardening of the bituminous mixture, the component and the bitumen mat are pressed together and thereby glued to one another.

Claims

1. A method for manufacturing a dishwasher, comprising the steps of:

applying a usable, flowable and reactively-hardenable bituminous mixture upon at least one member of the dishwasher selected from the group consisting of a bitumen mat and a plastic component, to form at least one adhesive bead which is at least partly surrounded by at least one area which is free of the reactively-hardenable bituminous mixture; and

gluing the bitumen mat to the plastic component for noise deadening and/or sound insulation of the plastic component by pressing together the plastic component and the bitumen mat before the reactively-hardenable bituminous mixture hardens.

2. The method of claim 1 for manufacturing a household dishwasher.

3. The method of claim 1, wherein the bitumen mat is a prefabricated bitumen mat.

4. The method of claim 1, wherein the at least one adhesive bead from the reactively-hardenable bituminous mixture is applied to the member such that the area which is free of the bituminous mixture is covered after the plastic component and the bitumen mat are pressed together so that an essentially full-surface adhesive layer is produced on confronting contact surfaces between the plastic component and the bitumen mat.

5. The method of claim 1, wherein the bituminous mixture is either applied exclusively to the plastic component or exclusively to the bitumen mat before the plastic component and the bitumen mat are pressed together.

6. The method of claim 1, wherein the adhesive bead is applied substantially linearly, in the form of a cord or a strand to the member before the plastic component and the bitumen mat are pressed together.

7. The method of claim 1, wherein the adhesive bead is configured in the form of a single continuous bead track.

8. The method of claim 1, wherein the adhesive bead is configured in a serpentine shape.

9. The method of claim 1, wherein the applying step is carried out to form a number of adhesive beads in the form of separate bead tracks.

10. The method of claim 1, further comprising the step of applying at least one adhesive bead to an edge area of an adhesive contact surface of the member before the plastic component and the bitumen mat are pressed together, such as to surround the edge area of the adhesive contact surface as a partly or entirely closed mesh or ring bead.

11. The method of claim 1, wherein the bitumen mat has at least one rounded-off corner area.

12. The method of claim 11, wherein the rounded-off corner area has a radius of at least 2 mm.

13. The method of claim 11, wherein the rounded-off corner area has a radius of at least 4 mm.

14. The method of claim 11, wherein the rounded-off corner area has a radius of at least 6 mm.

15. The method of claim 11, wherein the rounded-off corner area has a radius of at most 30 mm.

16. The method of claim 11, wherein the rounded-off corner area has a radius of at most 20 mm.

17. The method of claim 11, wherein the rounded-off corner area has a radius of at most 15 mm.

18. The method of claim 1, wherein at least one adhesive bead squeezes out of an edge-side adhesive joint between the plastic component and the bitumen mat, when the plastic component and the bitumen mat are pressed together, to enclose an edge section of the member partly or entirely.

19. The method of claim 1, wherein the adhesive bead has an average width of at least 2 mm.

20. The method of claim 1, wherein the adhesive bead has an average width of at least 4 mm.

21. The method of claim 1, wherein the adhesive bead has an average width of at least 6 mm.

22. The method of claim 1, wherein the adhesive bead has an average width of at most 30 mm.

23. The method of claim 1, wherein the adhesive bead has an average width of at most 20 mm.

24. The method of claim 1, wherein the adhesive bead has an average width of at most 15 mm.

25. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at least 1.0 times an average width of the at least one adhesive bead.

26. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at least 1.2 times an average width of the at least one adhesive bead.

27. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at least 1.5 times an average width of the at least one adhesive bead.

28. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at most 4.0 times an average width of the at least one adhesive bead.

29. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at most 3.0 times an average width of the at least one adhesive bead.

30. The method of claim 1, wherein an average distance of a gap between two adjacent sections of the at least one adhesive bead amounts to at most 2.0 times an average width of the at least one adhesive bead.

31. The method of claim 25, wherein the adjacent sections of the at least one adhesive bead extend in parallel relationship to one another.

32. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at least 0.1 kg/m².

33. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at least 0.2 kg/m².

34. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at least 0.3 kg/m².

35. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at most 2.0 kg/m².

36. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at most 1.2 kg/m².

37. The method of claim 1, wherein the reactively-hardenable bituminous mixture is applied in relation to confronting contact surfaces between the bitumen mat and the plastic component at a mass which amounts to at most 0.8 kg/m².

38. The method of claim 1, wherein a time between production of the bituminous mixture and the pressing together of the plastic component and the bitumen mat amounts to at most 90 sec.

39. The method of claim 1, wherein a time between production of the bituminous mixture and the pressing together of the plastic component and the bitumen mat amounts to at most 75 sec.

40. The method of claim 1, wherein a time between production of the bituminous mixture and the pressing together of the plastic component and the bitumen mat amounts to at most 60 sec.

41. The method of claim 1, further comprising the step of producing the bituminous mixture from a mixture of at least one first component and at least one second component in one of three ways, a first way in which the first component contains a basic binder, a flux oil and a reactive additive which are tailored to each other so that an activator is required for hardening, and in which the second component contains the activator;

a second way in which the first component contains a basic binder and a flux oil which are tailored to each other so that reactive additive is required for hardening, and in which the second component contains the reactive additive;

a third way in which the first component contains a basic binder and a flux oil which are tailored to each other so that reactive additive and an activator are required for hardening, and in which the second component contains the reactive additive and the activator.

42. The method of claim 1, wherein the first component is a walling section for delimiting a washing compartment of the dishwasher.

43. A dishwasher, comprising:

at least one plastic component;

a least one bitumen mat for attachment onto the plastic component for noise deadening and/or deadening sound of the plastic component; and

a usable, flowable and reactively-hardenable bituminous mixture applied upon at least one member selected from the group consisting of the bitumen mat and the last plastic component to effect the attachment of the bitumen mat onto the plastic component.

44. The dishwasher of claim 43, constructed in the form of a household dishwasher.

45. The dishwasher of claim 43, wherein the bitumen mat is a prefabricated bitumen mat.

46. The dishwasher of claim 43, wherein the bituminous mixture is applied on the member such that at least one adhesive bead is formed by which the bitumen mat and the plastic component are glued to one another.

47. A facility for manufacturing a dishwasher, said facility comprising:

a device adapted to apply a usable, flowable and reactively-hardenable bituminous mixture applied upon at least one member of the dishwasher selected from the group consisting of a bitumen mat and a plastic component, such that at least one adhesive bead is formed which is surrounded at least partly by at least one area which is free of the reactively-hardenable bituminous mixture; and

a pressure application unit for pressing together the plastic component and the bitumen mat, thereby effecting noise deadening and/or sound insulation of the component.

48. The facility of claim 47, wherein the adhesive bead has an essentially linear, cordshaped or strand-shaped configuration.

49. The facility of claim 47, wherein the device is constructed to spray the bituminous mixture upon the member in the absence of a spraying upon the at least one area.

50. The facility of claim 47, wherein the device is an extrusion device or a spray device.