초록 ▼

A spacer for insulating glass panes has a profile body having a cross section having first and second side walls, an inner wall and an outer wall, forming a closed hollow profile, wherein first and second filamentary reinforcing elements are arranged in the inner wall, the first primary reinforcing

A spacer for insulating glass panes has a profile body having a cross section having first and second side walls, an inner wall and an outer wall, forming a closed hollow profile, wherein first and second filamentary reinforcing elements are arranged in the inner wall, the first primary reinforcing element being arranged in a first portion of the cross section in which the inner wall adjoins the first side wall, and the second reinforcing element being arranged in a second portion of the cross section in which the inner wall adjoins the second side wall, the first and second primary reinforcing elements being arranged, as regards their cross sectional surfaces, at most approximately 50% in the first and/or in the second side wall, and such that spacing between the centroids of the cross sectional surfaces of these reinforcing elements is approximately 40% or more of spacing between the side walls.

대표청구항 ▼

1. A spacer for insulating glass panes, including a profile body made from plastics material which has a substantially rectangular cross section having first and second mutually parallel side walls and an inner wall that extends between the first and the second side wall, wherein glass panes abut ag

1. A spacer for insulating glass panes, including a profile body made from plastics material which has a substantially rectangular cross section having first and second mutually parallel side walls and an inner wall that extends between the first and the second side wall, wherein glass panes abut against the first and second side wall, the spacer further comprising an outer wall that extends between the first and the second side wall, substantially parallel to the inner wall, the profile body forming a closed single cavity hollow profile, wherein the spacer comprises a first and a second filamentary primary reinforcing element each having an outer contour, a cross sectional surface and a centroid, the first filamentary primary reinforcing element and the second filamentary primary reinforcing element being arranged spaced apart from each other in a part of the inner wall and parallel to an axial direction of the spacer profile body, such that the spacing between the centroids of the cross sectional surfaces of these reinforcing elements is approximately 50% or more of the spacing between the side walls, and the spacing is at least approximately 4 mm, the cross sectional surfaces being completely in the parts of the inner wall and their outer contours maintain a spacing of approximately 0.5 mm or more to the side walls, and wherein the first and second primary reinforcing elements are each arranged adjacent to a part of the hollow volume of the hollow profile in which, once the hollow profile has been bent at 90° around a bend axis extending perpendicular to the longitudinal direction and parallel to inner wall, the parts of the inner wall accommodating the first and the second primary reinforcing elements are spaced from the outer wall. 2. The spacer according to claim 1, wherein the outer wall is made from plastics material. 3. The spacer according to claim 1, wherein the spacing between the centroids of the cross sectional surfaces of the primary reinforcing is at least approximately 5 mm. 4. The spacer according to claim 1, wherein the cross section of the filamentary primary reinforcing elements is rectangular, round or oval. 5. The spacer according to claim 1, wherein at least the outer wall is provided with or forms a diffusion barrier. 6. The spacer according to claim 1, wherein the plastics material of the hollow profile comprises PP, PC, PVC, SAN, polyester, PA and/or ABS. 7. The spacer according claim 1, wherein the first filamentary primary reinforcing element and the second filamentary primary reinforcing element each have a weight, and the profile body plastics material has a weight, and a weight ratio between the weight of the primary reinforcing elements and the weight of the plastics material is approximately 1:6 to approximately 2:1. 8. The spacer according to claim 1, wherein the plastics material has a content of reinforcing fibres which is approximately 20 weight % or less. 9. The spacer according claim 1, wherein the plastics material includes additives. 10. The spacer according claim 1, wherein the inner wall has a thickness, at least in the regions thereof in which the first and second primary reinforcing elements are arranged, which is approximately 1× to approximately 2.5× of the cross sectional surface of the primary reinforcing elements in a direction of the thickness of the inner wall. 11. The spacer according claim 1, wherein the thickness of the inner wall is smaller in a central region between the primary reinforcing elements than in the regions in which the primary reinforcing elements are arranged. 12. The spacer according claim 1, wherein the profile body has a centre, and the inner wall has a thickness that is reduced, directly adjacent to the side walls, by comparison with the adjoining region of the inner wall in a direction of the profile body centre. 13. The spacer according to claim 1, wherein in the hollow profile there are arranged, in addition to the first and second filamentary primary reinforcing elements, further reinforcing elements. 14. The spacer according to claim 13, wherein at least one of the further reinforcing elements is arranged on and/or in the outer wall. 15. The spacer according to claim 14, wherein a ratio of the total cross sectional surfaces of all the reinforcing elements in the inner wall to the total cross sectional surface of reinforcing elements in the outer wall is approximately 2:1 to approximately 1:2. 16. The spacer according to claim 14, wherein the reinforcing element(s) arranged in the region of the outer wall have a higher elongation at break than the reinforcing elements arranged in the region of the inner wall. 17. The spacer according to claim 1, wherein the hollow profile has an overall height, and a longitudinal direction, when the hollow profile is bent, it has a neutral axis which is perpendicular to the longitudinal direction and parallel to the inner wall and is arranged in a region approximately 40% to approximately 60% of the way up the overall height of the hollow profile. 18. The spacer according to claim 1, wherein the hollow profile has an overbend angle of approximately 20° or less for producing a portion bent at 90°. 19. The spacer according to claim 1, wherein the outer wall is itself constructed as a reinforcing element. 20. The spacer according to claim 2, wherein the plastics material is compatible or identical with the plastics material of the profile body. 21. The spacer according to claim 20, wherein the outer wall is extruded in one piece with the profile body. 22. The spacer according to claim 4, wherein the filamentary primary reinforcing elements each have a surface that is knurled, or provided with an externally threaded structure, and/or is provided with a coating of adhesion promoter. 23. The spacer according to claim 5, wherein the diffusion barrier is selected from a metal or plastics foil that is impermeable to water vapour, a metal coating that is applied to the hollow profile or a plastics coating that is applied to the hollow profile or co-extruded therewith. 24. The spacer according to claim 8, wherein the plastics material has a content of reinforcing fibres which is approximately 10 weight % or less. 25. The spacer according to claim 9, wherein the plastics material includes additives selected from fillers, pigments, light stabilisers, impact modifiers, antistatic agents and/or flame retardants. 26. The spacer according to claim 11, wherein the inner wall has a thickness, at least in the regions thereof in which the first and second primary reinforcing elements are arranged, which is approximately 1.5× to approximately 2.5× of the cross sectional surface of the primary reinforcing elements in a direction of the thickness of the inner wall. 27. The spacer according to claim 15, wherein the reinforcing element(s) arranged in the region of the outer wall have a higher elongation at break than the reinforcing elements arranged in the region of the inner wall. 28. The spacer according to claim 19, wherein, when the outer wall is a diffusion barrier, the outer wall is made from a metal foil. 29. The spacer according to claim 24 wherein the plastic is substantially free of reinforcing fibres.