公开(公告)号：US11077585B2

公开(公告)日：2021-08-03

申请号：US15535792

申请日：2015-12-10

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Michael J. Zogg, Jr. ,  Timothy W. Gambrel ,  Johan Van Leeuwen

IPC: B29B9/06 ,  B29C48/285 ,  B29C48/365 ,  B29C48/78 ,  B29C48/695 ,  B29C48/37

Abstract: Disclosed herein is a system comprising a first pump; a pelletization system that comprises an underwater pelletizer; where the pelletization system is located downstream of the first pump and is in fluid communication with it; a direct line that is located downstream of the first pump and upstream of the pelletization system; where the direct line does not contain a pump or a heat exchanger; and a bypass line that is located downstream of the first pump and upstream of the pelletization system; where the bypass line comprises a second pump; where the first pump is operative to discharge the polymer to the pelletization system via the direct line when the polymer has a melt viscosity greater than 105 centipoise; and where the first pump is operative to discharge the polymer to the pelletization system via the bypass line when the polymer has a melt viscosity less than 105 centipoise.