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    • 9. 发明授权
    • On-line rheometer device
    • 在线流变仪装置
    • US5974866A
    • 1999-11-02
    • US920944
    • 1997-08-29
    • Mahari TjahjadiJoseph M. H. JanssenGeorge F. FischerYe-Gang LinSafwat E. TadrosGalina D. Georgieva
    • Mahari TjahjadiJoseph M. H. JanssenGeorge F. FischerYe-Gang LinSafwat E. TadrosGalina D. Georgieva
    • G01D21/02B29C47/92G01N11/08G01N33/44G01N11/04A23G1/22
    • G01N11/08B29C47/0011B29C47/92B29C2947/92019B29C2947/92104B29C2947/9218B29C2947/9219B29C2947/922B29C2947/92209B29C2947/9238B29C2947/9239B29C2947/924B29C2947/92409B29C2947/92485B29C2947/92514B29C2947/926B29C2947/92695B29C2947/92704G01N33/442
    • A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt and the predetermined size of said orifice; means weighing at least a portion of said diverted melt stream discharged through said orifice, said weighing means including weight sensing means for measuring the weight of diverted melt stream and producing a resultant weight signal; and computer means responsive to the temperature, pressure and weight signals for determining process characteristics of the main polymer melt.
    • 用于提供关于聚合物熔体的过程控制信息(例如粘度)的系统包括在压力下含有聚合物熔体的装置; 用于将聚合物熔体流直接从所述容纳装置转移到预定几何形状的孔口并通过预定几何形状的孔口的装置,其中所述转向部分流过所述孔口的流动是不受阻碍的,并且直接取决于所述主要聚合物熔体的压力,其中 横截面面积的大小适于允许所述转向熔融聚合物流过,而不存在作用在所述转向熔融聚合物上的附加独立装置以增加通过所述孔口的流动; 温度检测装置,用于测量转向的熔体流的温度并产生合成的温度信号; 用于测量转向熔体流的压力并产生合成压力信号的压力感测装置,所述压力信号直接取决于所述主要聚合物熔体中聚合物的压力和所述孔口的预定尺寸; 指重量通过所述孔排出的所述转向熔融物流的至少一部分,所述称重装置包括重量检测装置,用于测量转向熔体流的重量并产生所得重量信号; 以及响应温度,压力和重量信号的计算机装置,用于确定主聚合物熔体的工艺特性。