Process for producing self-supporting glucan film
AssigneeKabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
InventorsHiromi Hijiya, Toshio Miyake
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Abstract
A continuous process for producing a self-supporting glucan film, comprises casting an aqueous glucan solution on the surface of a corona-treated endless heat-resistant plastic belt, drying the glucan solution thereon while heating, and releasing the resultant self-supporting glucan film therefrom. Suitable glucans are those which substantially consist of repeating maltotriose units, such as pullulan or elsinan.
Claims10
A process for producing self-supporting film of a glucan consisting essentially of repeating maltotriose units, said process consisting essentially of:
- providing an aqueous solution of the glucan having a concentration in the range of 10-50 w/w % and an inorganic substance content in the range of 0.02-5.0 w/w %;
- casting the solution on a corona-treated endless heat-resistant plastic belt to give a uniform layer having a depth in the range of 0.01-0.5 mm;
- drying the solution thereon while heating with 40.degree.-100.degree. C. air;
- and
- releasing the resultant self-supporting film therefrom.
A process for producing self-supporting monolayered film of a glucan consisting essentially of repeating maltotriose units, said process consisting essentially of:
- casting an aqueous solution of the glucan having an inorganic substance content in the range of 0.02-5.0 w/w % on a traveling corona-treated endless heat-resistant plastic belt to give a uniform and continuous layer of the aqueous solution;
- drying the layer of the aqueous solution on the traveling endless belt while heating;
- and
- releasing the resultant self-supporting film from the endless belt.
Dependencies are inferred from the claim text.