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    Coextrusion system
    4.
    发明授权
    Coextrusion system 失效
    共挤系统

    公开(公告)号：US3918865A

    公开(公告)日：1975-11-11

    申请号：US40166973

    申请日：1973-09-28

    申请人： WELEX INC

    发明人： NISSEL FRANK R

    IPC分类号： B29C47/04 ,  B29C47/06 ,  B29D9/00

    CPC分类号： B29C47/065 ,  B29C47/0021 ,  B29C47/043 ,  B29C47/067 ,  B29C47/145

    摘要： Coextrusion system producing laminar multi-layer plastic sheets. Special plastic layers are laid at selected surface portions of a continuously extruded plastic core, and the shape of the product is converted to a sheet. The added layers are provided through separate passageways, and valves control the selection of passageways, allowing the production of plastic laminar sheets in a wide variety of combinations. The added layers are conveniently provided by one or more adaptor dies disposed upstream of the extruder which forms the sheet.

    摘要翻译： 共挤系统生产层流多层塑料板。 将特殊的塑料层放置在连续挤出的塑料芯的选定的表面部分，并将产品的形状转换成片材。 添加的层通过单独的通道提供，并且阀控制通道的选择，允许以各种各样的组合生产塑料层流片。 添加的层通过一个或多个位于挤出机上游形成片材的适配器模具方便地提供。

    Method of extracting a plural layered sheet
    5.
    发明授权
    Method of extracting a plural layered sheet 失效
    提取一层叠层的方法

    公开(公告)号：US3833704A

    公开(公告)日：1974-09-03

    申请号：US26438772

    申请日：1972-06-19

    申请人： WELEX INC

    发明人： NISSEL F

    IPC分类号： B29C47/06 ,  B29F3/10 ,  B32B15/08 ,  B32B31/30

    CPC分类号： B29C47/065 ,  B29C47/0021 ,  B29C47/145

    摘要： A thermoplastic sheet comprising a lamina bearing base in produced by feeding a heat-plastified laminated rod into a conventional sheet forming die. The laminated rod is formed using an adapter die which is interposed between a rod-forming die and the sheet forming die and which deposits a layer of heat-plastified material constituting the lamina on a segment of the peripheral surface of the cross-section of a heat-plastified rod of the base material, as the rod is extruded from the rod-forming die. The sheet forming die converts the heat-plastified laminated rod into a laminated sheet.