EXTRUDING METHOD AND DEVICE, AND STRUCTURE MANUFACTURED BY SAID METHOD AND DEVICE

摘要

PURPOSE: To ease thermal impact between low-temperature polymer melt stream elements and high-temperature melt stream elements. CONSTITUTION: Extruders 10, 14 supercool a supplied high-temperature melt stream element, and one or more melt stream elements are exposed under the undesired thermal condition for a predetermined period and/or one or more layers are used as thermal absorption layer. The device comprises an improved die 42 in which one of the plurality of melt stream elements having different temperatures passes through the die 42 via shortened paths toward the extruding direction of the object to be extruded.