公开(公告)号：WO2007107584A3

公开(公告)日：2008-01-31

申请号：PCT/EP2007052681

申请日：2007-03-21

Applicant: BASF AG ,  SEIBRING JOACHIM ,  BECKER JENS ,  KOPIETZ MICHAEL ,  BRUCKMANN THEODOR

Inventor： SEIBRING JOACHIM ,  BECKER JENS ,  KOPIETZ MICHAEL ,  BRUCKMANN THEODOR

IPC: B29B9/06 ,  B29C44/34 ,  B29C47/30

CPC classification number: B29B9/065 ,  B29C44/3461 ,  B29C47/0011 ,  B29C47/0066 ,  B29C47/0071 ,  B29C47/0073 ,  B29C47/0872 ,  B29C47/30 ,  B29C47/864 ,  B29C2791/007 ,  B29C2793/0027 ,  B29K2077/00

Abstract: The invention relates to a method for granulating polymer melts in a granulation chamber in which a cutting device is accommodated at a pressure above ambient pressure. In a first step, the granulating chamber is flooded with a gas which is inert in relation to the polymer melt and has a pressure at which granulation is carried out. The polymer melt is then injected into the granulating chamber. The gas is finally expelled from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device, the melt being cut into pellets.

Abstract translation: 本发明涉及一种用于造粒聚合物熔体在其中切割装置中的安装了粒化室，在环境压力以上的压力的方法。 在第一步骤中造粒室与一个相反的聚合物熔体淹没具有在该造粒进行的压力的惰性气体。 此后，将聚合物熔体注入造粒室。 最后，从造粒室中的气体通过液体置换，只要聚合物熔体开始通过切割器，其被切成颗粒流动。

公开(公告)号：CA2646703A1

公开(公告)日：2007-09-27

申请号：CA2646703

申请日：2007-03-21

Applicant: BASF AG

Inventor： BRUCKMANN THEODOR ,  KOPIETZ MICHAEL ,  SEIBRING JOACHIM ,  BECKER JENS

IPC: B29B9/06 ,  B29C44/34 ,  B29C48/345

Abstract: The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The nitrogen/air shows a pressure, with which the granulation is carried out. The polymer melt in the cutting device is cut into pellets. The granulated pellets with the liquid are discharged from the granulation chamber and subsequently separated from the liquid. The pressure in the granulation chamber is 2-15 bar. An independent claim is included for a device for granulating polymer melts in the granulation chamber.