Shirred tubular casing and apparatus including shirring member for its manufacture

摘要

Disclosed is a shirred tubular casing comprising an outwardly pointing helical main fold structure comprising windings of two main folds and primary accessory folds arranged between the main folds and an accessory fold structure comprising secondary accessory folds. Also disclosed is an annular shirring member and an apparatus equipped with this shirring member for manufacturing the shirred tubular casing.