公开(公告)号：US06232436B1

公开(公告)日：2001-05-15

申请号：US09396906

申请日：1999-09-15

申请人： Wilhelm Beck ,  Bernhard Leibmann ,  Aike Niemann ,  John D. Snyder ,  Kenneth Bicknell ,  Michael Mahler

发明人： Wilhelm Beck ,  Bernhard Leibmann ,  Aike Niemann ,  John D. Snyder ,  Kenneth Bicknell ,  Michael Mahler

IPC分类号： C08F600

CPC分类号： B29B9/065 ,  B29K2077/00

摘要： A process for granulating a polyamide resin involving: (a) providing an underwater granulating device having a heated multiple-bore die wherein the bores have an internal diameter ranging from 1.2 to 2.5 mm and a length of from 12 to 50 mm; (b) providing a polyamide resin melt having a viscosity, at 160° C., of less than 3,000 mPas; (c) cooling the polyamide resin melt to form a cooled polyamide resin; (d) introducing the cooled polyamide resin into and through the heated multiple-bore die to form an extrudate; (e) providing a source of water; (f) contacting the extrudate with the water to form a cooled extrudate; and (g) cutting the cooled extrudate into granules.

摘要翻译： 一种用于造粒聚酰胺树脂的方法，包括：（a）提供具有加热的多孔模具的水下造粒装置，其中所述孔的内径为1.2至2.5mm，长度为12至50mm; （b）提供在160℃下粘度小于3,000mPas的聚酰胺树脂熔体; （c）冷却聚酰胺树脂熔体以形成冷却的聚酰胺树脂; （d）将经冷却的聚酰胺树脂引入并通过加热的多孔模具以形成挤出物; （e）提供水源; （f）使挤出物与水接触以形成冷却的挤出物; 和（g）将冷却的挤出物切割成颗粒。