Shaped articles made from pre-processed starch

Details Shaped articles made from pre-processed starch Shaped articles made from pre-processed starch

C - Chemistry, Metallurgy

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C08L 3/02 (2006.01) B29C 67/24 (2006.01) C08J 5/00 (2006.01) C08L 3/04 (2006.01) A61F 13/15 (2006.01)

Patent

CA 1328711

ABSTRACT The invention refers to a process of forming shaped articles from starch and to such articles. The process comprises: (a) heating a composition comprising a pre- processed and essentially destructurised starch/water material, at a water content in the range of from 10 to 20% by weight based on the weight of the composition to a temperature sufficient to essentially destructure the starch; (b) transferring the melt to a mold while maintaining said water content; and (c) cooling the melt in the mold to a temperature below its glass transition temperature to form a solid shaped article. Thus according to the present disclosure, the starch is destructurised initially and then solidified before being re-melted prior to its shaping into articles. This separation of the shaping step from the initial destructurising step yields articles having improved physical properties.

574346

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