Process and apparatus for manufacturing biodegradable...

Details Process and apparatus for manufacturing biodegradable... Process and apparatus for manufacturing biodegradable...

B - Operations, Transporting

29

C

B29C 44/34 (2006.01) B29C 44/04 (2006.01)

Patent

CA 2215415

A method for manufacturing biodegradable products with a blown foamy structure, wherein a mass comprising at least natural polymers such as starch is passed under pressure into or through a mould (23, 63) and the mass (M, S) is heated in the mould (23, 63) in a manner such as to give rise to at least cross-linking of natural polymers, while the mass prior to the introduction into the mould has a temperature which is below the gelatinization temperature and in the mould is brought at least to the baking temperature.

La présente invention décrit un procédé de fabrication de produits biodégradables avec une structure en mousse expansée, dans lequel une masse comportant au moins des polymères naturels tels que l'amidon est envoyée sous pression dans ou à travers un moule (23, 63) et la masse (M, S) est chauffée dans le moule (23, 63) afin de provoquer une réticulation des polymères naturels, tandis qu'avant l'introduction dans le moule, la masse a une température qui est inférieure à la température de gélatinisation et que dans le moule, elle est amenée au moins à la température de cuisson.

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