Messer Industries Usa, Inc.

Linde Aktiengesellschaft

Linde Gmbh

Kunststoff-institut Lüdenscheid (kimw Gmbh)

Rolf Heninger

Erwan Siewert

Ralf Schmand

Pawel Szych

Rebecca Wallus

Martin Ziegler

Andreas Praller

Andreas Kürten

A method for impregnating a polymeric granulate with a physical blowing agent is disclosed. The polymeric granulate can be a typical material such as a polycarbonate that is used in foam injection moulding processes. The physical blowing agent can be carbon dioxide which impregnates that polymeric granulate at a temperature range of 40&#xb0; to 120&#xb0; C. and a pressure range of 15 to 55 bar. Preferably, the polymeric granulate is heated in a range of 50&#xb0; to 90&#xb0; with a range of 60&#xb0; to 80&#xb0; preferred. A pressure range of 25 to 45 bar is preferred with a range of 30 to 40 bar more preferred.

Method for impregnation a polymeric granulate with a physical blowing agent

A method and apparatus for freezing the contents of a freezer storage bag are disclosed. A cooling duct is mounted with or without spacers inside of a freezer storage bag that contains a liquid that can be frozen. A liquid coolant is first fed to a heat exchanger thereby forming a gaseous coolant. The gaseous coolant is fed to a manifold and from the manifold to at least one cooling duct present in the freezer storage bag. The gaseous coolant is circulated through the cooling duct thereby imparting freezing to the liquid in the freezer storage bag.

Methods and apparatus for freezing a liquid

The invention relates to a method for producing a contiguous ice body in a ground region, wherein first cooling lances are inserted into the ground region in which the contiguous ice body is to be produced in the presence of a flow of a fluid flow medium flowing through the ground region, in particular in the form of groundwater, wherein a first coolant is introduced into the first cooling lances, and wherein furthermore at least one second cooling lance is introduced into the ground region on a side of the first cooling lances facing the flow and a second coolant, which has a temperature that is lower than the temperature of the first coolant, is introduced into the at least one second cooling lance in order to support the formation of a contiguous ice body that surrounds all of the cooling lances.

Method for producing a contiguous ice body in a ground-freezing process

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Höhenkirchen-Siegertsbrunn, Germany

Rolf Heninger