초록 ▼

A fermented or yeast leavened dough is continuously fed to a plurality of nozzles and extruded and twisted into a plurality of continuous twisted dough ropes without substantially increasing the density of the dough. The dough is fed to the nozzles by an extruder or pump which supplies the dough at

A fermented or yeast leavened dough is continuously fed to a plurality of nozzles and extruded and twisted into a plurality of continuous twisted dough ropes without substantially increasing the density of the dough. The dough is fed to the nozzles by an extruder or pump which supplies the dough at a substantially constant pressure without substantial surging of the dough. Each nozzle may produce a plurality of dough ropes which are twisted together to form a continuous twisted dough rope. By avoiding a substantial increase in dough density during extrusion and twisting, a hard, glassy texture in the baked product is avoided and a crispy, non-vitreous texture is achieved. The dough twisting apparatus includes a manifold having a plurality of dough passageways and extruder pipes which extend from the downstream ends of the dough passageways. A rotary die cup is mounted on each of the stationary extruder pipes. Each die cup contains one or more die orifices. The die cups are rotated about the central longitudinal axis of the extruder pipe. Rotation of each die cup twists the dough into a twisted dough rope upon exiting the die orifice of the die cup.

대표청구항 ▼

A fermented or yeast leavened dough is continuously fed to a plurality of nozzles and extruded and twisted into a plurality of continuous twisted dough ropes without substantially increasing the density of the dough. The dough is fed to the nozzles by an extruder or pump which supplies the dough at

A fermented or yeast leavened dough is continuously fed to a plurality of nozzles and extruded and twisted into a plurality of continuous twisted dough ropes without substantially increasing the density of the dough. The dough is fed to the nozzles by an extruder or pump which supplies the dough at a substantially constant pressure without substantial surging of the dough. Each nozzle may produce a plurality of dough ropes which are twisted together to form a continuous twisted dough rope. By avoiding a substantial increase in dough density during extrusion and twisting, a hard, glassy texture in the baked product is avoided and a crispy, non-vitreous texture is achieved. The dough twisting apparatus includes a manifold having a plurality of dough passageways and extruder pipes which extend from the downstream ends of the dough passageways. A rotary die cup is mounted on each of the stationary extruder pipes. Each die cup contains one or more die orifices. The die cups are rotated about the central longitudinal axis of the extruder pipe. Rotation of each die cup twists the dough into a twisted dough rope upon exiting the die orifice of the die cup. said pressure adjusting chamber; a pressure reducing tank connected to said pressure adjusting chamber to rapidly reduce a pressure in said pressure adjusting chamber; and an injection machine for injecting, into said forming mold, fluidized biodegradable resin placed in a heated and pressurized environment and having moisture trapped therein. 2. An apparatus as defined in claim 1, wherein said pressure adjusting chamber has an evacuation valve connected thereto. 3. An apparatus as defined in claim 1, wherein said pressure adjusting chamber has a compressor connected thereto. 4. An apparatus as defined in claim 2, wherein said pressure adjusting chamber has a compressor connected thereto. 5. An apparatus as defined in claim 1, wherein said pressure adjusting chamber has a pressurizing tank connected thereto. 6. An apparatus as defined in claim 2, wherein said pressure adjusting chamber has a pressurizing tank connected thereto. 7. An apparatus for producing a biodegradable resin foam, comprising: a pressure adjusting chamber constructed in a manner to be capable of being opened and closed hermetically; an air-permeable forming mold arranged in said pressure adjusting chamber; a pressure reducing tank connected through a pressure reducing valve to said pressure adjusting chamber to rapidly reduce a pressure in said pressure adjusting chamber; an evacuation valve connected to said pressure adjusting chamber; a compressor connected to said pressure adjusting chamber; a valve controller for controlling operation of each of said valves; and an injection machine for injecting, into said forming mold, fluidized biodegradable resin placed in a heated and pressurized environment and having moisture trapped therein; said valve controller initiating actuation of said compressor before or at the time when injection of the biodegradable resin into said forming mold by said injection machine is started, carrying out termination of actuation of said compressor and opening of said evacuation valve in the course of the injection, and carrying out closing of said evacuation valve and opening of said pressure reducing valve after the injection. 8. An apparatus for producing a biodegradable resin foam, comprising: a pressure adjusting chamber constructed in a manner to be capable of being opened and closed hermetically; an air-permeable forming mold arranged in said pressure adjusting chamber; a pressure reducing tank connected through a pressure reducing valve to said pressure adjusting chamber to rapidly reduce a pressure in said pressure adjusting chamber; an evacuation valve connected to said pressure adjusting chamber; a pressurizing tank connected through a pressurizing valve to said pressure adjusting chamber; a valve controller for controlling operation of each of said valves; and an injection machine for injecting, into said forming mold, fluidized biodegradable resin placed in a heated and pressurized environment and having moisture trapped therein; said valve controller opening said pressurizing valve before or at the time when injection of the biodegradable resin into said forming mold by said injection machine is started, carrying out closing of said pressurizing valve and opening of said evacuation valve in the course of the injection, and carrying out closing of said evacuation valve and opening of said pressure reducing valve after the injection. 9. An apparatus for producing a biodegradable resin foam, comprising: a pressure adjusting chamber constructed in a manner to be capable of being opened and closed hermetically; an air-permeable forming mold arranged in said pressure adjusting chamber; a pressure reducing tank connected through a pressure reducing valve to said pressure adjusting chamber to rapidly reduce a pressure in said pressure adjusting chamber; an evacuation valve connected to said pressure adjusting chamber; a valve controller for controlling operation of each of said valves; and