| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved process for the pelletization of polymers, using a die in which the die holes incorporate a reverse taper along at least a portion of the length thereof, and to provide an underwater melt cutter incorporating the die. <P>SOLUTION: The die plate (1) has an exit face (2), where the polymer (not shown) exits the die (hole), and an entrance face (3) where the (molten) polymer enters the die hole (4). In this particular instance, the die hole (4) is straight over part of its length, zone 5, and has a reverse taper over part of its length, zone 6. The tapered portion has a "taper angle" (8). <P>COPYRIGHT: (C)2012,JPO&INPIT |
