METHOD AND DEVICE FOR PRODUCING A SEAMLESS EDIBLE CELLULOSE CASING

摘要

In order to produce a seamless edible cellulose casing (2) from non-derivatized cellulose, a solution of non-derivatized cellulose is extruded in tertiary amine-N-oxide, additives and water, out of an annular nozzle (3) whereby producing a casing, and is guided through an air gap into a water bath (4). The cellulose casing (2) is guided out of the water bath (4), is cleaned by spraying it with heated water, and is subsequently guided through at least two washing lines (9, 11) and a plasticizing line (12). After exiting the plasticizing line, the wet cellulose casing is pre-dried while in a flatly laid state before it is dried to its final moisture content. The pre-drier (13) is vertically or horizontally arranged and is comprised of an insulated tube to which air heated by heat exchangers is supplied in a precisely dosed quantity and at a constant temperature of up to 130 DEG C. The main drier (19) is horizontally arranged and contains tangentially and radially oriented air nozzles, whose air jets hold the inflated cellulose casing (20) in suspension during the drying method.