Abstract: The invention relates to an edible packaging film for foodstuffs, which contains cellulose, at least one protein and at least one filler. Bran, ground natural fibres, cotton linters, chitosan, guar meal, carob meal or micro-crystalline cellulose are preferably used as the fillers. The film is predominantly used to produce synthetic sausage casings.

Abstract: A seamless cellulose-based tubular film is produced by extruding an aqueous N-methylmorpholine N-oxide (NMMO) spinning solution through a ring die. The tubular film comprises at least one protein, at least one filler and, if appropriate, a stabilizer. The tubular film passes through a spinning bath 3 in which it is turned around and, after its exit from the spinning bath it passes through a wash device 25, 26, a plasticizing device 27 and a dryer 28.

Abstract: An apparatus for removing NMMO-water mixture which collects in the interior of a tubular film which is produced by the NMMO process comprises a spinning vat and a wash vat. Between the two vats is situated a conveyor belt which circulates endlessly over two rollers. The conveyor belt is directed upward at an incline from the spinning vat to the wash vat. The tubular film, in the interior of the spinning vat, is passed vertically downward, then reversed and conducted vertically out of the spinning vat and passes over the inclined conveyor belt into the wash vat. Above the conveyor belt is situated a spray device having spraying nozzles from which wash liquid at a temperature between 60 and 80° C. is sprayed onto the tubular film which is transported via the conveyor belt.

Abstract: The invention relates to a cellulose-hydrate-containing seamless tubular food casing comprising at least one vinylpyrrolidone homopolymer and/or vinylpyrrolidone copolymer in admixture with the cellulose hydrate. The weight ratio of vinylpyrrolidone homopolymer and/or vinyl-pyrrolidone copolymer to cellulose is generally from 1:25 to 10:1. The casing can be reinforced with fibers, in particular with a hemp fiber paper. It is generally produced by the viscose process and has a low permeation and anti-mold properties. The casing is envisaged as artificial sausage casing, particularly suitable for dry or long-keeping sausage.

Abstract: The invention concerns flat or tubular cellulose-based foodstuff casings which are prepared by extruding (“spinning”) cellulose dissolved in N-methyl-morpholine-N-oxide by means of a nozzle with an annular gap. After extrusion, the casings are stretched transversely in ambient air by blow moulding, and are then treated with an NMMO-containing aqueous spinning bath. The tubular casings are particularly suitable as sausage casings. Cut open, they can also be used as flat foils.

Abstract: The invention relates to a stick of a tubular food casing based on cellulose. The casing is produced by the NMMO process. The stick is particularly stable and is thus suited for automatic filling devices such as those used for producing cooked or boiled sausages.

Abstract: The present invention relates to a cellulose-based food casing, manufactured with a spinning solution that comprises cellulose, N-methyl-morpholine-N-oxide, water, at least one additive that modifies the surface properties of the casing and at least one other additive that modifies its internal structure. The surface-modifying additive is preferably a protein, a protein derivative, a mono-, di- and triglyceride, a diketene with long-chained alkyl radicals, a wax and/or a paraffin. The casing may also optionally contain a fleece insert, and preferably has a tubular shape. The inventive casing is particularly suited for use as a sausage casing. Nonreinforced casings of the present invention are particularly suited for use as peelable casings for the production of sausage, while the fiber-reinforced casings are particularly suited for dry sausage.

Abstract: The present invention that also possesses provides a method for producing a seamless tubular film based on cellulose comprising extruding an aqueous cellulose-N-methyl-morpholine-N-oxide (NMMO) spinning solution through an annular die in a spinning bath, wherein the spinning solution forms the tubular film. The film is laterally drawn in an air gap between the annular die and the spinning bath by stabilizing air pressure in the tubular film. The level of hydrostatic pressure from an inner spinning solution formed inside the tubular film extends above the spinning bath, the inner spinning solution comprising an aqueous NMMO solution that supports and intensifies said lateral drawing. The tubular film that has been expanded by the lateral drawing process is passes by a turning point in the spinning bath, and directed out of the spinning bath.

Abstract: The invention concerns flat or tubular cellulose-based foodstuff casings which are prepared by extruding (“spinning”) cellulose dissolved in N-methyl-morpholine-N-oxide by means of a nozzle with an annular gap. After extrusion, the casings are stretched transversely in ambient air by blow moulding, and are then treated with an NMMO-containing aqueous spinning bath. The tubular casings are particularly suitable as sausage casings. Cut open, they can also be used as flat foils.

Abstract: A fiber-reinforced, tubular food casing based on regenerated cellulose, which is produced using an amount of viscose solution which is decreased by 10 to 30% in comparison with the standard casing at a spinning speed increased by at least 25%.

Abstract: A seamless cellulose-based tubular film is produced by extrusion of an aqueous cellulose-N-methylmorpholine N-oxide solution.

Abstract: A curved, tubular packing casing of unreinforced cellulose having non-uniform wall thickness in cross-section is disclosed. The area of minimum wall thickness lies opposite the area of maximum wall thickness and is situated in the area of the greater, outer radius of curvature. The maximum wall thickness lies in the range from about 50 to 160 .mu.m, and the minimum wall thickness lies in the range from about 10 to 50 .mu.m. The maximum wall thickness is 50 to 800% greater than the minimum wall thickness.

Abstract: Disclosed is a process for the continuous manufacture of fiber-reinforced tubing based on cellulose hydrate, comprising the steps of impregnating and coating fibrous tubing with an aqueous akaline viscose solution; moving the viscose-treated tubing at a steady speed vertically in a straight line along its longitudinal axis; applying a viscose-regenerating fluid along at least one circular circumferential line to at least the outside of the viscose-treated fibrous tubing; immediately after the application step, passing the tubing with the film of regenerating fluid on its surface through at least one first air section, whereby there is produced a fiber-reinforced tubing based on cellulose hydrate; treating the cellulose hydrate tubing with an aqueous fluid containing a dissolved chemical plasticizer; and drying the plasticized tubing. Also disclosed is an apparatus for carrying out this process.