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TEXTURED NON-POROUS BARRIER TRANSFER CASING AND METHOD FOR ITS PRODUCTION
TEXTURED NON-POROUS BARRIER TRANSFER CASING AND METHOD FOR ITS PRODUCTION
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机译:纹理化的无孔壁垒套管及其生产方法
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摘要
The present invention provides a functional additive transferring (co)extruded thermoplastic food casing having a water vapor barrier and/or oxygen barrier effect wherein an inside surface of the thermoplastic food casing has a textured surface which forms a three-dimensional pattern of higher and lower retaining capacity for a functional additive, wherein the thermoplastic food casing having a textured surface in case of a monolayer casing or an inner layer comprising the inside surface having a textured surface in case of a multilayer casing comprises as a main component at least one thermoplastic polymer material selected from the group consisting of (co)polyamides, (co)polyolefins, (co)polyester and vinylidenchloride (co)polymers, wherein the (co)extruded thermoplastic food casing does not comprise a net and/or a material forming a net or any other three dimensional structure on its outside surface, wherein the average thickness of the thermoplastic food casing in the areas having a higher retaining capacity is in a range of from 1 to 100 µm, wherein the average thickness of the thermoplastic food casing in the areas having a lower retaining capacity is in a range of from 191 to 2000 µm, provided that the thickness difference between the average thickness in the areas having higher retaining capacity and the average thickness in the areas having a lower retaining capacity is in a range of from 160 to 1950 µm and that a ratio of the average thickness of the thermoplastic food casing in the areas having a higher retaining capacity and the average thickness of the thermoplastic food casing in the areas having a lower retaining capacity is in a range of from 0.002 to 0.25.
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