公开(公告)号：US07811073B2

公开(公告)日：2010-10-12

申请号：US11673945

申请日：2007-02-12

申请人： Franz Mahler ,  Christian Baier ,  Michael Heinecker ,  Joachim Libowski

发明人： Franz Mahler ,  Christian Baier ,  Michael Heinecker ,  Joachim Libowski

IPC分类号： B29C47/06

CPC分类号： B29C47/705 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/065 ,  B29C47/268 ,  B29C2791/007 ,  B29C2947/92647 ,  B29L2023/001

摘要： The invention relates to a blow head for producing blown tubular films from thermoplastic materials. Films produced by conventional blow heads often have dull strips or wavy areas, the so-called spiral strips. The aim of the invention is to avoid these negative film properties. For this purpose, the blow head comprises a plurality of annular gap-shaped melt channels arranged concentrically around the center axis of the blow head, the spiral distributor of the inner melt channel being arranged on the inner limiting wall in relation to the center axis of the blow head and the spiral distributor of the outer melt channel being arranged on the outer limiting wall in relation to the center axis of the blow head.

摘要翻译： 本发明涉及一种用于从热塑性材料生产吹塑管状薄膜的吹头。 由常规吹塑头生产的薄膜通常具有钝的条带或波浪形区域，即所谓的螺旋条带。 本发明的目的是避免这些负片性质。 为此目的，吹头包括围绕吹头的中心轴线同心地布置的多个环形间隙形熔体通道，内熔体通道的螺旋分配器相对于中心轴线设置在内限制壁上 外熔体通道的吹头和螺旋分配器相对于吹头的中心轴线布置在外限制壁上。

公开(公告)号：US20070172536A1

公开(公告)日：2007-07-26

申请号：US11673945

申请日：2007-02-12

申请人： Franz Mahler ,  Christian Baier ,  Michael Heinecker ,  Joachim Libowski

发明人： Franz Mahler ,  Christian Baier ,  Michael Heinecker ,  Joachim Libowski

IPC分类号： B29C47/12

CPC分类号： B29C47/705 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/065 ,  B29C47/268 ,  B29C2791/007 ,  B29C2947/92647 ,  B29L2023/001

摘要： The invention relates to a blow head for producing blown tubular films from thermoplastic materials. Films produced by conventional blow heads often have dull strips or wavy areas, the so-called spiral strips. The aim of the invention is to avoid these negative film properties. For this purpose, the blow head comprises a plurality of annular gap-shaped melt channels arranged concentrically around the center axis of the blow head, the spiral distributor of the inner melt channel being arranged on the inner limiting wall in relation to the center axis of the blow head and the spiral distributor of the outer melt channel being arranged on the outer limiting wall in relation to the center axis of the blow head.

摘要翻译： 本发明涉及一种用于从热塑性材料生产吹塑管状薄膜的吹头。 由常规吹塑头生产的薄膜通常具有钝的条带或波浪形区域，即所谓的螺旋条带。 本发明的目的是避免这些负片性质。 为此目的，吹头包括围绕吹头的中心轴线同心地布置的多个环形间隙形熔体通道，内熔体通道的螺旋分配器相对于中心轴线设置在内限制壁上 外熔体通道的吹头和螺旋分配器相对于吹头的中心轴线布置在外限制壁上。