Abstract: 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° to 120° C. and a pressure range of 15 to 55 bar. Preferably, the polymeric granulate is heated in a range of 50° to 90° with a range of 60° to 80° preferred. A pressure range of 25 to 45 bar is preferred with a range of 30 to 40 bar more preferred.

Abstract: 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° to 120° C. and a pressure range of 15 to 55 bar. Preferably, the polymeric granulate is heated in a range of 50° to 90° with a range of 60° to 80° preferred. A pressure range of 0 25 to 45 bar is preferred with a range of 30 to 40 bar more preferred.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 info 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.

Abstract: A device for generating dry ice snow having a rotating body mounted in a housing to rotate around a rotational axis, exhibiting at least one expansion chamber on the circumference of the rotating body, a feed line for introducing liquid carbon dioxide into the at least one expansion chamber, the housing having an inlet opening for introducing a gaseous mass flow into the at least one expansion chamber, and an outlet opening for dispensing the dry ice snow generated in the respective expansion chamber from the housing. The inlet and outlet openings are arranged such that the at least one expansion chamber can be simultaneously connected with the inlet and outlet openings in terms of flow by rotating the rotating body around the rotational axis, so that at least sections of the at least one expansion chamber can carry a gaseous mass flow along the rotational axis.

Abstract: A method and device for gas metal arc welding, wherein a wire electrode is melted by an arc, wherein the arc burns between the wire electrode and a work piece, wherein an inert gas is supplied in the form of an inert gas flow, wherein emissions are released in the form of emission particles during gas metal arc welding, and wherein at least one flow gradient is generated in the direction of the work piece for agglomerating the emission particles.

Abstract: In a method of producing a casting, molding or pressing tool (1) or tool insert (2) with at least one material layer (3, 5, 7) and with temperature control medium channels (6) arranged in the at least one material layer (3, 5, 7), the temperature control medium channels (6) are introduced into the at least one material layer (3, 5, 7) using a thermal spray process (2).

Abstract: The invention relates to an airbag device comprising a gas generator, at one end of which a diffuser with radial discharge ports is positioned with a joining section. A non-metallic gas lance is fixed to the joining section upstream of the diffuser. The non-metallic gas lance is provided with or is plugged onto a reinforcing means at the axial end thereof that is associated with the joining section. The reinforcing means redirects the gas flow from the diffuser from a radial discharge direction thereof to an axial discharge direction during normal operation of the gas generator In case of an extremely applied high temperature capable of causing self-ignition of the gas generator, the gas lance material and the reinforcing means are destroyed, as a result of which the gas flow is no longer redircted to the axial direction thereby preventing the gas generator from acting as a rocket which could be hazardous.