| 摘要 |
PURPOSE:To enable the forming of even a soft material to a cylindrical product without using skewers, by inserting an inner tube into an outer tube, fixing the inner tube in the outer tube with a stay, extruding the desired raw material into the gap between the outer tube and the inner tube at a specific speed and heating or cooling the outer tube. CONSTITUTION:The raw material for the product is charged to an extruder 1 and extruded through the nozzle into the gap 4 between the outer tube 2 and the inner tube 3 under a specific pressure. When the outer surface of the outer tube 2 is heated at a specific temperature with a steam heater, etc., the raw material is heated to a product in the course of being passed through the outer tube. Stays 5 are protruded in the outer tube to fix the inner tube at the definite position in the outer tube. When the raw material is agar, etc., the outer surface of the outer tube is cooled to solidify the material. |
