METHOD AND DEVICE FOR PRODUCING MOLTEN STARCH WHICH IS UNIFORM AND THEMOPLASTICALLY TREATABLE FROM CHEIMICALLY DENATURED STARCH AND PLASTICIZER, AND MOLTEN STARCH OBTAINED THEREBY

PURPOSE: To produce a homogeneous, low-viscosity and thermo-plastically processible starch melt from chemically modified starch, plasticizer and/or other additives by maintaining a mixture or a melt at an sufficiently elevated temperature and passing it through the process of depressurization and that of exposure at a high pressure. CONSTITUTION: Chemically modified starch is introduced into an intake zone of an extruder and conveyed, and by adding prehomogenized liquid and anhydrous plasticizer, emulsifier and additives and mixing them with starch, the mixture of starch, plasticizer, emulsifier and additives are conveyed. Then, without adding any water from outside, starch granules are pulverized, and the mixture is completely plasticized and made into a homogeneous and thermoplastically processible melt, which is conveyed. The melt is degassed, extruded through a die, and at that time the mixture or the melt is maintained at a sufficiently elevated temperature. Then, after depressurized and degassed, the melt is extruded into the die and exposed.