DE29815881U1

DE29815881U1 - Filter material

Info

Publication number: DE29815881U1
Application number: DE29815881U
Authority: DE
Original assignee: Moldex Metric AG and Co KG
Current assignee: Moldex Metric AG and Co KG
Priority date: 1998-09-03
Filing date: 1998-09-03
Publication date: 2000-01-13
Anticipated expiration: 2008-09-04

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims

1. Filter material, in particular for filters formed by bending, with a filter material layer ( 1 ) placed in a plurality of folds ( 5 ), characterized in that the folds ( 5 ) with at least one bending region ( 6 a, 6 b) with opposite the other areas are provided with reduced bending moment of resistance.

2. Filter material according to claim 1, characterized in that the bending range ( 6 a, 6 b) has an incomplete fold formation.

3. Filter material according to claim 2, characterized in that the folds ( 5 ) in the bending area ( 6 a, 6 b) are less deep than outside the bending area.

4. Filter material according to claim 2 or 3, characterized in that the back ( 5 a, 5 b) of the folds ( 5 ) in the bending area ( 6 a, 6 b) is flatter than outside the bending area.

5. Filter material according to one of claims 1 to 4, characterized in that bending areas ( 6 a, 6 b) on adjacent folds ( 5 ) are aligned with one another and extend in a strip shape across the folds ( 5 ).

6. Filter material according to claim 5, characterized in that a plurality of stiffly arranged bending areas ( 6 a, 6 b) are arranged parallel and at a distance from one another.

7. Filter material according to one of claims 1 to 6, characterized in that the pleated filter material layer ( 1 ) contains a filtering layer ( 3 ) and a stabilizing layer ( 2 ).

8. Filter material according to one of claims 1 to 7, characterized in that the pleated filter material layer ( 1 ) contains at least one cover layer ( 4 ).

9. Filter material according to one of claims 1 to 8, characterized in that the pleated filter material layer ( 1 ) is covered with at least one non-folded cover layer ( 12 ), which in some areas with the folds ( 5 ) of the filter material layer ( 1 ) connected is.

10. Filter material according to one of claims 7 to 9, characterized in that the stabilizing layer ( 2 ) is a plastic network.

11. Filter material according to one of claims 8 to 10, characterized in that the cover layer ( 4 , 12 ) is a plastic spunbond.

12. Respiratory protection mask with a shell-shaped mask body ( 8 ) containing filter material according to one of claims 1 to 11.

13. Respirator with a shell-shaped mask body ( 8 ) containing filter material according to one of claims 7 to 11, wherein the stabilization layer ( 2 ) facing the inside of the mask body ( 8 ).

14. Respirator according to claim 12 or 13, characterized in that on the outside of the mask body ( 8 ) a non-folded stabilizing layer ( 11 ) and on the inside a non-folded cover layer ( 12 ) is net angeord.

15. Device ( 20 ) for producing a filter material with a filter material layer ( 1 ) placed in a plurality of folds ( 5 ), characterized by a fold surface ( 27 , 28 ) provided with elongate fold teeth ( 29 ), at least one of the fold teeth ( 29 ) has an interruption (A) in an area of its length to form a bending area ( 6 a, 6 b).

16. The apparatus according to claim 15, characterized in that the interruption (A) extends in strips over a plurality of folding teeth ( 29 ).

17. The apparatus of claim 15 or 16, characterized in that for the formation of folds a first, with interruptions (A) in their teeth ( 29 ) provided ne pleat surface ( 28 ) and a second pleat surface ( 27 ) cooperate.

18. The apparatus according to claim 17, characterized in that the second fold surface ( 27 ) is provided with interruptions (A) in their teeth ( 29 ) which are opposite the interruptions (A) of the first fold surface ( 28 ).

19. Device according to one of claims 15 to 18, characterized in that the fold surface ( 28 ) cooperates with a hot surface ( 31 ).

20. The apparatus according to claim 19, characterized in that between the hot surface ( 31 ) and the folding teeth ( 29 ) fixing lugs ( 33 ) are provided.

21. Device according to one of claims 15 to 20, characterized in that the fold teeth ( 29 ) are arranged on the circumference of a toothed roller ( 27 , 28 ).

22. The apparatus according to claim 21, characterized in that the interruption (A) extends in the circumferential direction annularly around the toothed roller ( 27 , 28 ).

23. The device according to claim 21 or 22, characterized in that the folding roller ( 27 , 28 ) has at least two partial rollers ( 28 a to 28 d) which are arranged at an axial distance (A) from one another.

24. Device according to one of claims 20 to 23, characterized in that the fixing lugs ( 33 ) are designed as ring webs around the circumference of a hot roller ( 31 ) which cooperates with a toothed roller ( 27 , 28 ) provided with fold teeth ( 29 ).

25. Device according to one of claims 21 to 24, characterized in that a first, with a hot roller ( 31 ) cooperating tooth roller ( 28 ) and a second tooth roller ( 27 ) is provided which cooperates with the first tooth roller ( 28 ).