公开(公告)号：EP2797727B1

公开(公告)日：2018-09-12

申请号：EP11751679.9

申请日：2011-07-12

申请人： FABIOS Spólka Akcyjna

发明人： KRZYSZTOF, Janus

IPC分类号： B29C47/24 ,  B29C47/06 ,  B29C47/26 ,  B29C47/10 ,  A22C13/00 ,  B29L23/00 ,  B29C47/12 ,  B29C47/36 ,  B29C47/08 ,  B29C47/76

CPC分类号： B29C47/064 ,  A22C13/0006 ,  A22C2013/002 ,  B29C47/0026 ,  B29C47/005 ,  B29C47/0806 ,  B29C47/1045 ,  B29C47/1063 ,  B29C47/109 ,  B29C47/122 ,  B29C47/24 ,  B29C47/268 ,  B29C47/364 ,  B29C47/768 ,  B29K2105/16 ,  B29L2023/002

摘要： The invention relates to cylindrical collagen casings for foodstuff, such as sausages or fish products, that are edible so that it is unnecessary to remove the casing before the foodstuff is eaten and at the same time have increased resistance to tearing without the need of using additional nets. In order to improve the strength and gas permeability parameters of the collagen casing (100, 200, 300), a collagen gel mixture is extruded through annular gaps (31, 32, 33), where at least one of these gaps (32) is located between two sleeve members provided with annular projections (28, 29) tapered in an axial direction (L) and extending outside the external side of the housing member (21 ) of a head of an extruder apparatus and the outlets of said annular gaps (32) between each pair of neighbouring sleeve members are located at the ends of corresponding annular projections (28, 29).