Device and method for preparing a liquid polymer blend
AssigneeWebasto SE
InventorsMartin Sacher, Markus Rauch, Jan Woköck, Alexander Isbach, Karl-Heinz Bartl, Martin Seebass
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Abstract
A device for preparing a liquid polymer blend is proposed having a storage container for the liquid polymer blend; a degassing device, which is arranged downstream of the storage container, for the liquid polymer; a gassing device, which is arranged downstream of the degassing device, for adding an additive gas to the liquid polymer blend; a homogenization unit, which is arranged downstream of the gassing device, for the polymer blend to which the additive gas was added; and an output line, which is connected to the homogenization unit, for the homogenized polymer blend.
Claims7
A method for preparing a liquid polymer blend, comprising the steps of:
- degassing the liquid polymer blend;
- subsequently aerating the degassed liquid polymer blend with an additive gas;
- homogenizing the liquid polymer blend provided with the additive gas;
- supplying the homogenized liquid polymer blend to a container having a stirring unit;
- storing temporarily the homogenized liquid polymer blend in the container,
- stirring the homogenized liquid polymer blend while in the container;
- providing the homogenized liquid polymer blend to a processing station via a pipe connected to the container,
- further comprising the steps of:
- measuring a mass flow of the liquid polymer blend after the degassing step,
- determining an amount of the additive gas as a function of the measured mass flow of the liquid polymer blend, and
- adding the amount of determined additive gas to the degassed liquid polymer blend.
Dependencies are inferred from the claim text.