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US 2020/0163349 A1Published application
Process to obtain a round shaped collagen casing and casing obtained by the process
AssigneeViscofan Technology (Suzhou) Co., Ltd.
InventorsJuan Negri Samper, Stefan Knapp, Ansgard Kopatz
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Abstract
The present invention relates to a process to obtain a round shaped collagen casing and to the casing obtained by the process, which is based on a post rounding of a straight collagen casing by controlled heat shrinking.
Claims9
A process to obtain a round shaped collagen casing comprising the steps of:
- a) guiding a straight inflated collagen casing which has a humidity between the 12% to the 30% balanced to the total weight of the casing and contains collagen plasticizer between 12% to 24% balanced to the total weight of the casing and an inside gas pressure between 20 to 700 mbar to a heat transfer unit;
- b) transferring heat energy to the casing by a heat transfer unit to obtain a round shaped collagen casing, wherein the temperature achieved in the innermost ring of the casing is higher than shrinkage temperature of collagen casing;
- c) supporting the round shaped collagen casing by a round element.
A collagen casing characterized by a round shaped and wherein the ratio, longitudinal outer ring shrinkage/longitudinal inner ring shrinkage is higher than 1.25.
Dependencies are inferred from the claim text.