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公开(公告)号：US5086984A
公开(公告)日：1992-02-11
申请号：US570307
申请日：1990-08-20
申请人： Douglas E. Turek , Mark A. Sibley
发明人： Douglas E. Turek , Mark A. Sibley
CPC分类号： B65H63/082 , B65H2701/31
摘要： A method of predicting final yarn package diameter (D) during winding of yarn onto the package. The yarn is to be wound onto the package for a known period of time (TD) to obtain the final yarn package diameter. The method comprises the steps of: measuring the time (TS) for the package to grow to a known diameter (DS); predicting yarn package diameter using the correlation:D=square root [k1+k2(TD/TS)]wherein k1 and k2 are empirically determined constants.
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公开(公告)号：US4956902A
公开(公告)日：1990-09-18
申请号：US406804
申请日：1989-09-12
申请人： Douglas E. Turek
发明人： Douglas E. Turek
IPC分类号： D02G1/14
CPC分类号： D02G1/14
摘要： A method of predicting changes in caterpillar length of yarn. The process is used in systems wherein yarn is passed through a set of hot rollers to bulk the fibre and is then contacted with an air jet to pull the yarn away from the rollers and impinge it upon a rotating drum. This drum comprises an endless textured screen forming a cylindrical outer surface of the drum and a frame to support the screen. A caterpillar is thereby formed on the screen. Air is then exhausted from the centre of said drum to draw air through the screen and cool the yarn. The yarn is then pulled off of the screen using take-up rollers. The process for predicting a change in yarn caterpillar length comprises a step of measuring during a given time period: the change in temperature of the exhaust air (dT1), the change in temperature of the yarn (dT2) after it is taken up from the drum and the change in tension of the yarn (dF) after it is taken up from the drum. Caterpillar length change (dL) after this given period of time is then predicted using the correlation: ##EQU1## wherein a,b and c are weighted averages, and a+b+c=1; and wherein: ##EQU2## are all empirically determined constants.
摘要翻译： 一种预测纱线毛毛虫长度变化的方法。 该方法用于其中纱线通过一组热辊以体积纤维的系统，然后与空气射流接触以将纱线从辊子拉出并将其撞击在旋转的滚筒上。 该鼓包括形成滚筒的圆柱形外表面的无端纹理屏幕和支撑屏幕的框架。 因此，屏幕上形成了一个毛毛虫。 然后从所述滚筒的中心排出空气，以通过筛网抽出空气并冷却纱线。 然后使用卷取辊将纱线从屏幕拉出。 用于预测纱毛长度变化的过程包括在给定时间段内测量的步骤：排出空气（dT1）的温度变化，纱线（dT2）从其中吸收的温度变化（dT2） 滚筒和纱线（dF）从卷筒上取下后的张力变化。 然后使用以下相关性预测该给定时间段之后的卡特彼勒长度变化（dL）：其中a，b和c是加权平均值，a + b + c = 1; 并且其中：
都是经验确定的常数。 -
公开(公告)号：US5534205A
公开(公告)日：1996-07-09
申请号：US286297
申请日：1994-08-05
摘要： In a process for preparing polybenzoxazole or polybenzothiazole filaments by extruding a polybenzoxazole or polybenzothiazole dope, drawing the dope filament across an air gap, and coagulating the dope filament; the number of filament breaks can be reduced by placing a stress isolation device after extruding but before coagulating the filament.
摘要翻译： 在通过挤出聚苯并恶唑或聚苯并噻唑涂料制备聚苯并恶唑或聚苯并噻唑长丝的方法中，将纺丝原液丝穿过空气间隙并凝结掺杂丝; 通过在挤出之后但在凝固丝之前放置应力隔离装置可以减少长丝断裂的数量。
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公开(公告)号：US5001925A
公开(公告)日：1991-03-26
申请号：US406802
申请日：1989-09-12
申请人： Douglas E. Turek
发明人： Douglas E. Turek
摘要： A method of estimating yarn temperature comprises, measuring the temperature of a guide pin in contact with the yarn; measuring the tension of the yarn with a tensiometer; and estimating yarn temperature using the correlation:Tyarn=k1+k2.times.Tpin-k3.times.(F-k4)wherein Tyarn is the estimated temperature of the yarn:k1, k2, k3 and k4 are empirically determined constants; Tpin is the temperature of the guide pin; and F is yarn tension.
摘要翻译： 估计纱线温度的方法包括：测量与纱线接触的导销的温度; 用张力计测量纱线的张力; 并使用相关性估计纱线温度：Tyarn = k1 + k2xTpin-k3x（F-k4）其中Tyarn是纱线的估计温度：k1，k2，k3和k4是经验确定的常数; Tpin是导销的温度; F为纱线张力。
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