Patent ID: 7011858

Claim:
A shirred seamless, tubular concertina casing suitable for foodstuffs comprising: an inner cavity, two ends, one of which is tied off, wherein the tied-off end of the concertina is turned inward into the inner cavity, such that the tied-off end includes a closure placed on a turned-in section of said concertina, such that when said casing is filled, said concertina is turned inside out and said closure is on the outside thereof; and an outer surface provided with a coating or impregnation comprising a food additive, wherein said additive imparts a color, an odor, an aroma, and/or a flavor to said casing so as to enable even transfer of said additive to said foodstuffs, and further wherein the concertina casing is based upon thermoplastic starches of mixtures containing thermoplastic starches and other natural or synthetic polymers, and the concertina casing is single- or multilayer.