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1. 发明申请

US20140159275A1 CONCENTRIC CO-EXTRUSION DIE AND A METHOD OF EXTRUDING A MULTILAYER THERMOPLASTIC FILM 有权
标题翻译：浓缩共挤塑料和一种挤出多层热塑性薄膜的方法
公开(公告)号：US20140159275A1
公开(公告)日：2014-06-12
申请号：US14233863
申请日：2012-07-19
申请人： Emmanouil Lempidakis , Ioannis Melas , Minas Kalarakis
发明人： Emmanouil Lempidakis , Ioannis Melas , Minas Kalarakis
IPC分类号： B29C47/26 , B29C47/06
CPC分类号： B29C47/268 , B29C47/0026 , B29C47/065 , B29C47/261 , B29C47/263 , B29C47/265 , B29C47/364 , B29C47/56 , B29C47/70 , B29C47/705
摘要： A large concentric co-extrusion die (1) is described having a plurality of annular or conical die mandrel layers (201-205). Each layer is formed between a pair of adjacent annular or conical die mandrels (101-106) defining between them a flow path for molten thermoplastics material from an inlet to an annular extrusion outlet (110) through which a thermoplastics tubular extrusion is formed in use. Extrusion takes place through the multiple annular layer outlets (301-305) to form a multi-layered product. At least one layer (203) of the annular or conical die mandrels has a plurality of molten material inlets arranged around the external circumference of the co-extrusion die with each inlet being connected to a feed channel (403) which has plural bifurcations (403.1, 403.2, 403.3) providing 2n subsidiary outlet feed channels (503) where n is the number of bifurcations. Each subsidiary outlet feed channel being connected to a corresponding helical outlet channel (703).
摘要翻译：描述了具有多个环形或圆锥形模心层层（201-205）的大型同心共挤出模头（1）。每个层形成在一对相邻的环形或圆锥形模心轴（101-106）之间，在它们之间形成用于从入口到环形挤出出口（110）的熔融热塑性材料的流动通道，在其中形成热塑性管状挤出物。通过多个环形层出口（301-305）进行挤出以形成多层产品。环形或圆锥形模芯心轴的至少一层（203）具有围绕共挤出模头的外圆周布置的多个熔融材料入口，每个入口连接到具有多个分支（403.1）的进料通道（403），403.2,403.3），其提供2n个辅助出口馈送通道（503），其中n是分叉数。每个辅助出口进料通道连接到相应的螺旋出口通道（703）。

2. 发明授权

US09868244B2 Concentric co-extrusion die for extruding a multilayer thermoplastic film 有权
公开(公告)号：US09868244B2
公开(公告)日：2018-01-16
申请号：US14233863
申请日：2012-07-19
申请人： Emmanouil Lempidakis , Ioannis Melas , Minas Kalarakis
发明人： Emmanouil Lempidakis , Ioannis Melas , Minas Kalarakis
IPC分类号： B29C47/26 , B29C47/70 , B29C47/00 , B29C47/06 , B29C47/56 , B29C47/36
CPC分类号： B29C47/268 , B29C47/0026 , B29C47/065 , B29C47/261 , B29C47/263 , B29C47/265 , B29C47/364 , B29C47/56 , B29C47/70 , B29C47/705
摘要： A large concentric co-extrusion die (1) is described having a plurality of annular or conical die mandrel layers (201-205). Each layer is formed between a pair of adjacent annular or conical die mandrels (101-106) defining between them a flow path for molten thermoplastics material from an inlet to an annular extrusion outlet (110) through which a thermoplastics tubular extrusion is formed in use. Extrusion takes place through the multiple annular layer outlets (301-305) to form a multi-layered product. At least one layer (203) of the annular or conical die mandrels has a plurality of molten material inlets arranged around the external circumference of the co-extrusion die with each inlet being connected to a feed channel (403) which has plural bifurcations (403.1, 403.2, 403.3) providing 2n subsidiary outlet feed channels (503) where n is the number of bifurcations. Each subsidiary outlet feed channel being connected to a corresponding helical outlet channel (703).

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