pps proceeding - Abstract Preview
pps proceeding
Symposium: S06 - Injection Molding and Extrusion
Oral Presentation
 
 

Construction of a pipe support with overmoulded metal insert

Anger Karsten (1)*, Lakemeyer Christoph (1), Lochbaum Ella (1), Haksteter Mark (1)

(1) Hadi-Plast GmbH & Co. KG - Hövelhof - Germany

Pipe supports contribute a big proportion to safe energy in modern buildings. Beside their function as the fastening of the pipeline, they have to insulate it from the environment. Conventional solutions consist of numerous components, of which every component fulfills one function. Because of this, conventional solutions are expensive and uncomfortable to install. The new developed pipe support provides a construction, that combines all functions in one component. The connection to the wall is given by an overmoulded metal insert. During the developing process, a with flame retardants filled polyethylene, that is foamed up with a chemical foaming agent, has been chosen as the material. It fulfills the mechanical requirements as well as the requirements to the insulation and fire prevention. Beside to the material, the focus of the developing process was on the construction of the pipe support. It was developed to the effect that the handling during the installation process is much easier and the pipe is well insulated. Moreover, the costs should decrease by being able to fasten different sizes of pipes with one pipe support. To reach this effect, the pipe support has a complex inner structure and pipe fastening, that promotes a good insulation by minimizing the contact surface between pipe and pipe support and using hollow chambers around the pipe. The pipeline is held by a minimal number of contact points, what leads to a contact surface, that is around 80% lower compared to conventional solutions. Different pipe sizes can be fastened with slats, that work as bending springs to fasten the pipeline. For installation or maintenance of the pipeline, the pipe support has snap-in hooks to open or close it as often as needed without additional tools. Finally, the injection molding tool and the process parameters are developed, whereby the challenge is to build a foam structure in some parts, and solid elements in other parts of the pipe support.