PROCESS FOR PRODUCING BIODEGRADABLE FILMS FROM VEGETABLE RAW MATERIALS.

摘要

PCT No. PCT/EP93/02270 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/04600 PCT Pub. Date Mar. 3, 1994.There is provided a method for preparing biodegradable films from plant-based raw materials in the form of carbohydrates which method is continuous and carried out in one step. In the process the plant-based raw materials are modified and plastified and the films are prepared without interruption and in one step. The advantages of the invention reside in reduced shear stress of the starch molecules and thus in the improved properties of the films as well as in the cost-efficient, time-, energy- and space-saving manufacture.