Process for producing flat and annular-cross-section extrudates and
device for implementing the process
    1.
    发明授权
    Process for producing flat and annular-cross-section extrudates and device for implementing the process 失效
    用于生产扁平和环形横截面挤出物的方法和用于实施该方法的装置

    公开(公告)号:US5397514A

    公开(公告)日:1995-03-14

    申请号:US081279

    申请日:1993-06-25

    IPC分类号: B29C47/16 B29C47/22 B29C47/92

    摘要: In prior art processes of this kind the actual thickness of the extrudate is measured, compared with a reference thickness and the setting regions of an extrusion plant are controlled dependent upon the degree of difference. In order nevertheless to improve the quality of the extrudate in relation to the desired reference thickness, according to the invention the evolution strategy process is used. An increase in the convergence rate can also be attained by taking into account strategy parameters which can be deterministically or stochastically changed, whereby mixing including fixedly settable strategy parameters is also possible. In particular, knowledge of the process can be involved as qualitative process partial knowledge.

    摘要翻译: PCT No.PCT / EP91 / 01969 Sec。 371日期:1993年6月25日 102(e)日期1993年6月25日PCT 1991年10月19日PCT PCT。 公开号WO92 / 07701 日期5月14日。在这种现有技术的方法中,与参考厚度相比,测量挤出物的实际厚度,并且根据差异程度控制挤出设备的设定区域。 然而,为了提高挤出物相对于所需参考厚度的质量,根据本发明,使用进化策略方法。 通过考虑可以确定性地或随机地改变的策略参数,还可以获得收敛速度的增加,由此包括固定可设置的策略参数的混合也是可能的。 特别是,知识的过程可以作为定性过程的部分知识。

    Device for stretching and fixing sheet
    2.
    发明授权
    Device for stretching and fixing sheet 失效
    拉伸和固定片材的装置

    公开(公告)号:US5287958A

    公开(公告)日:1994-02-22

    申请号:US71358

    申请日:1993-06-03

    申请人: Manfred Steffl

    发明人: Manfred Steffl

    CPC分类号: B65H23/028 B29C55/165

    摘要: A device for crosswise stretching and fixing of plastic sheeting includes a chain carriage (5) which has an positionally adjustable first roller (7') and a second roller (7) mounted thereon. Tension, resulting from tractive forces transmitted when the chain carriage (5) travels in a running direction, is translated into a prestress force directed substantially in the crosswise direction of a guide rail (11). The prestress force holds the adjustable first roller (7') in constant prestress contact with a first running surface (1") of the guide rail and the second roller (7') in steady contact against a second running surface (1') of the guide rail.

    摘要翻译: PCT No.PCT / EP91 / 00346 Sec。 371日期1991年10月30日 102(e)1991年10月30日PCT 1991年2月25日PCT PCT。 第WO91 / 12952号公报 1991年9月5日,一种用于横向拉伸和固定塑料薄片的装置包括一个链条滑架(5),其具有安装在其上的可位置调节的第一滚轮(7')和第二滚轮(7)。 当链条滑架(5)沿运行方向行进时传递的牵引力产生的张力被转换为基本上沿导轨(11)的横向方向的预应力。 预应力力使可调节的第一辊(7')与导轨的第一行进表面(1“)保持恒定的预应力接触,并且第二辊(7')稳定地抵靠第二运行表面(1') 导轨。