-
公开(公告)号：US08865041B2
公开(公告)日：2014-10-21
申请号：US12736147
申请日：2009-03-18
申请人： Gary Lindsay Pitman
发明人： Gary Lindsay Pitman
CPC分类号： B29C47/10 , B29C47/0009 , B29C47/1009 , B29C47/1027 , B29C47/385 , B29C47/6075 , B29C47/66 , B29K2101/12
摘要： Process for extrusion of polymer by feeding a polymer feedstock to the feed port of an extruder having (i) two or more barrel sections arranged sequentially from (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two screws each having a diameter of X, to (b) a downstream barrel section from which melted polymer is passed to a die and extruded, and (ii) a feed port for feeding polymer feedstock to be extruded into the extruder at its upstream end. The polymer feedstock is in the form of a powder, and the feed port area is a rectangular shape with width limited by the width of the upstream feed barrel section to 2*X and with a length greater than 2.5*X. The total area of the feed ports through which polymer feedstock is introduced is greater than 5*X2.
摘要翻译： 通过将聚合物原料进料到挤出机的进料口，挤出聚合物的方法，其具有（i）从（a）供应待挤出的聚合物原料的上游进料筒部分顺序排列的两个或多个筒部分，上游进料 桶部分，每个螺杆均具有直径为X的两个螺钉，（b）熔融的聚合物从该熔融聚合物通过模头挤出的下游筒部分，和（ii）用于将聚合物原料输送到挤出机中的进料口 其上游端。 聚合物原料为粉末形式，进料口区域为矩形，其宽度受上游进料筒部分的宽度限制为2×X，长度大于2.5 * X。 引入聚合物原料的进料口的总面积大于5 * X2。
-
公开(公告)号：US20110001261A1
公开(公告)日：2011-01-06
申请号：US12736147
申请日：2009-03-18
申请人： Gary Lindsay Pitman
发明人： Gary Lindsay Pitman
CPC分类号： B29C47/10 , B29C47/0009 , B29C47/1009 , B29C47/1027 , B29C47/385 , B29C47/6075 , B29C47/66 , B29K2101/12
摘要： The present invention relates to an extruder for a polymer, and a process for extruding a polymer using said extruder. In particular, the present invention provides an extruder comprising: (i) two or more barrel sections arranged sequentially from: (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two or more screws each having a diameter of X; to (b) a downstream barrel section from which melted polymer is passed to a die and extruded; and (ii) one or more feed ports for feeding polymer feedstock to be extruded into the extruder at its upstream end, characterised in that the total area of the one or more feed ports through which polymer feedstock is introduced is greater than 4*X2, and a process for extrusion of polymer comprising feeding a polymer feedstock to the feed port of such an extruder.
摘要翻译： 本发明涉及一种用于聚合物的挤出机，以及使用所述挤出机挤出聚合物的方法。 特别地，本发明提供了一种挤出机，其包括：（i）两个或更多个筒部分，其顺序地从以下部分排列：（a）供给待挤出的聚合物原料的上游进料筒部分，上游进料筒部分包含两个或更多个 每个直径为X的螺钉; 到（b）熔融聚合物通过模头挤出的下游桶部分; 以及（ii）一个或多个进料口，用于将聚合物原料输送到其上游端挤出到挤出机中，其特征在于，引入聚合物原料的一个或多个进料口的总面积大于4×2， 以及聚合物的挤出方法，包括将聚合物原料进料到这种挤出机的进料口。
-
公开(公告)号：US07232878B2
公开(公告)日：2007-06-19
申请号：US10475344
申请日：2002-04-18
IPC分类号： C08F6/00
CPC分类号： C08F6/005
摘要： A process for the separation of volatile material from particulate polymer which has been substantially freed from unreacted monomer in an earlier separation step, comprising (a) feeding the particulate polymer to a purge vessel, optionally causing it to move through the vessel in substantially plug-flow mode, (b) heating the particulate polymer in the purge vessel to a temperature greater than 30° C. but insufficiently high to cause the particles to become agglomerated, and/or maintaining the polymer at a temperature in this range in the purge vessel, (c) feeding air to the purge vessel counter-current to the movement of the particulate polymer to remove volatile material therefrom, (d) removing the particulate polymer from the purge vessel. Preferably the particulate polymer fed to the purge vessel is caused to move through the vessel in substantially plug-flow mode. The process is particularly suitable for polyethylene.
摘要翻译： 一种在早期分离步骤中基本上不含未反应单体的颗粒聚合物分离挥发性物质的方法，包括（a）将颗粒状聚合物进料到清洗容器中，任选地使其以基本上堵塞的方式移动通过容器， 流动模式，（b）将清洗容器中的颗粒状聚合物加热至大于30℃的温度，但不足以使颗粒变得团聚，和/或将聚合物保持在该吹扫容器中的该温度范围内 ，（c）与微粒聚合物的运动相反地将空气送入净化容器以从其中除去挥发性物质，（d）从净化容器中除去颗粒聚合物。 进料至净化容器的颗粒聚合物最好以基本上是插塞模式移动通过容器。 该方法特别适用于聚乙烯。
-
-
搜索结果
3 条记录 (耗时 0.195 秒)