Abstract: Disclosed is a mandrel structure for extruding a tube composed of a non derivatized cellulose. The mandrel includes a hollow sizing portion having openings which gather gas bubbles that may evolve at the interface between the extruded tube and the sizing portion and allows the gas to pass into the hollow interior of the mandrel.

Abstract: Disclosed is a package containing a plurality of cut lengths of fibrous casing which are moisturized to substantially soaked levels of moisture and are retained in an evacuated plastic bag wherein the moisture level of the casing is derived from free water added into the bag prior to evacuation. Also disclosed is a method of packaging cut lengths of casing which provides for the addition of soaked levels of moisture to the casing in the bag.

Abstract: A handheld drinking vessel has finger recesses in its base to augment the users grip on the vessel. The base contains at least one transverse channel passing approximately under the vessel's center of gravity. The channel has an upper surface sized and contoured for the placement of a non-index finger to be in contact with said surface.

Abstract: The method of incinerating hazardous materials and fluidizable wastes, such as liquids, gases, entrained solid particles, fumes and slurries, utilizes an incinerator in the form of a sudden expansion burner. The incinerator has a relatively small diameter cylindrical inlet pipe connected by a circular plate to a relatively larger diameter elongated cylindrical combustion chamber. A waste injection line passes into the incinerator adjacent the inlet pipe for transfer of incineratable waste therethrough and into the upstream end of the combustion chamber. Air inlets connected to a blower also terminate adjacent the inlet pipe for supplying air at a high flow rate to the combustion chamber. One or more fuel nozzles extend through the plate into the combustion chamber to provide an overstoichiometric concentration of fuel adjacent the plate. The fuel is ignited through an electrically powered, fuel supplied ignitor extending into the combustion chamber through the inlet pipe.