EPOXY RESIN-BASED CATHODIC ELECTRODEPOSITION (CED) OF METAL COMPONENTS AS AN ADHESION PROMOTER FOR PU SYSTEMS

The present invention relates to a composite element, especially for a damping element, comprising a) at least one metallic body having a surface; b) a coating comprising an epoxy resin on at least part of the surface of the metallic body; c) a plastics body comprising at least one polyurethane, which at least partly surrounds the metallic body of (a) and in the region of the surround is at least partly in direct contact with the coating of (b), wherein the composite element between the surface of the metallic body (a) and the coating (b) has a conversion layer (d) which comprises at least one compound selected from the group of zirconium(IV) oxide, zinc(II) phosphate, and chromate. The invention further relates to a damping element comprising the composite element and at least one further body which is at least partly in direct contact with the composite element, preferably with the plastics body of (c). The invention additionally relates to production processes for composite element and damping element, to the composite and damping elements, respectively, that are produced or producible by these processes, and the use of these composite and damping elements, respectively. 1. A composite element , comprising:a) a metallic body having a surface;b) a coating comprising an epoxy resin on at least part of the surface of the metallic body of (a); andc) a plastics body comprising a polyurethane, which at least partly surrounds the metallic body of (a) and in a region of the surround is at least partly in direct contact with the coating of (b);wherein the composite element has, between the surface of the metallic body of (a) and the coating of (b), a conversion layer (d) which comprises a compound selected from the group consisting of zirconium(IV) oxide, zinc(II) phosphate, and chromate.2. The composite element of claim 1 , wherein the epoxy resin of (b) is an epoxy resin which is obtained or obtainable from a water-containing epoxy resin dispersion which optionally ...

DAMPER BEARING COMPRISING A HOUSING AND COVER

The invention relates to a damper bearing comprising a hollow housing () for receiving a damping element () and a cover () for fixing the damping element () in the housing (), wherein the housing () and the cover () are manufactured from plastic and the connection between the housing () and the cover () is produced integrally by a welding process, which is based on a relative movement between the housing () and the cover (). The invention furthermore relates to a method for producing a damper bearing according to the invention, in which the housing and the cover are brought into contact at contact surfaces provided for this purpose, and a relative movement between the housing and the cover is then generated, which causes the housing and the cover to be integrally welded as a result of the energy input into the contact surfaces. 1. A damper bearing , comprisinga hollow housing for receiving a damping element and a cover for fixing the damping element in the housing,wherein the housing and the cover are manufactured from plastic,wherein a connection between the housing and the cover is produced integrally by orbital welding or oscillating friction welding, which is based on a relative movement between the housing and the cover.2. The damper bearing of claim 1 , wherein contact surfaces of the housing and the cover which are provided for the integral connection are of rotationally symmetrical design.3. The damper bearing of claim 1 , wherein the orbital welding is used.4. The damper bearing of claim 1 , wherein the oscillating friction welding is used.5. The damper bearing of claim 1 , wherein contact surfaces of the housing and the cover are spaced apart from an outer surface of the damping element in a radial direction relative to an axis of rotation and are separated by a separating element.6. The damper bearing of claim 5 , wherein the separating element is designed as a groove or web.7. The damper bearing of claim 1 , wherein contact surfaces of the housing and ...

Welting mechanism for flat hosiery-frames.

Epoxy resin-based cathodic electrodeposition (CED) of metal components as an adhesion promoter for PU systems

The present invention relates to a composite element, especially for a damping element, comprising a) at least one metallic body having a surface; b) a coating comprising an epoxy resin on at least part of the surface of the metallic body; c) a plastics body comprising at least one polyurethane, which at least partly surrounds the metallic body of (a) and in the region of the surround is at least partly in direct contact with the coating of (b), wherein the composite element between the surface of the metallic body (a) and the coating (b) has a conversion layer (d) which comprises at least one compound selected from the group of zirconium(IV) oxide, zinc(II) phosphate, and chromate. The invention further relates to a damping element comprising the composite element and at least one further body which is at least partly in direct contact with the composite element, preferably with the plastics body of (c). The invention additionally relates to production processes for composite element and damping element, to the composite and damping elements, respectively, that are produced or producible by these processes, and the use of these composite and damping elements, respectively.