公开(公告)号：US3743143A

公开(公告)日：1973-07-03

申请号：US3743143D

申请日：1971-09-10

Applicant: LEESONA CORP

Inventor： BARNEY J ,  FLANAGAN J

IPC: B29C47/06 ,  B29C21/00

CPC classification number: B29C47/145 ,  B29C47/0019 ,  B29C47/0021 ,  B29C47/065

Abstract: Apparatus for extruding plastic material comprising an extruder having a passaged junction box disposed adjacent an extrusion die is disclosed. The junction box incorporates a flexible junction plate which is positioned at the junction where diverse thermoplastic resinous streams of material merge or marry into a common laminar flow path. The flexible junction plate automatically adjusts its position in the common flow path of the diverse streams in response to the differential in the rates at which the diverse thermoplastic materials are fed through the common flow path to the extrusion die. By virtue thereof the junction where the diverse materials marry preliminary to coextrusion to form a composite sheet or laminate is smooth and linear. This promotes uniformity of relative thickness of the individual layers or laminae throughout the composite sheet. Moreover, since the adjustment of the junction plate is automatic as a function of the rate at which the several thermoplastic materials are delivered into the common flow path, there is no need to disassemble the extrusion apparatus to reset the junction plate when the rate at which the respective diverse thermoplastic streams are altered.

Abstract translation: 公开了一种用于挤出塑料材料的设备，其包括具有邻近挤出模头设置的传送接线盒的挤出机。 接线盒包含柔性连接板，该接合板位于不同的热塑性树脂材料流合并或结合到公共层流路径的接合处。 响应于各种热塑性材料通过共同的流动路径进给到挤出模头的速率的差异，柔性连接板自动调节其在不同流的公共流动路径中的位置。 因此，各种材料预先共混以形成复合片材或层压材料的接合是光滑和线性的。 这促进了整个复合片材中各层或层的相对厚度的均匀性。 此外，由于接合板的调节是自动的，因为几种热塑性材料被输送到公共流路中的速度的函数，所以不需要拆卸挤出装置来重新设计连接板， 各种各样的热塑性流被改变。