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首页> 外文会议>TAPPI(Technical Association of the Pulp and Paper Industry) PLACE(Polymers. Laminations. Adhesives. Coatings. Extrusions) 2006 vol.1 >Critical role of on-line gauging system in Extrusion Coating Troubleshooting
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Critical role of on-line gauging system in Extrusion Coating Troubleshooting

机译：在线计量系统在挤出涂层故障排除中的关键作用

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摘要

Computer-based on-line gauging system plays a critical role in trouble-shooting of Extrusion Coating process during various stages of manufacturing. The system monitors a multitude of process variables continuously and trends the data for process monitoring. Time-based trends of various temperatures, pressures and speeds can be displayed continuously, along with coating thickness to show cause and effect. The high degree of process visibility is of tremendous value to the Line Operators and Process Engineers to setup the equipment at start-up and product changes, as well as to monitor production continuously. System ensures full-width coating gauge uniformity through effective process controls in the cross and down web directions, while monitoring substrate variability. Software features such as Process Variance Analyzer and FFT provide efficient process analytical tools for trouble-shooting of uncontrolled high frequency short-term machine direction variations caused by worn-out process equipment. Other sensors (such as visual inspection system) can be integrated to show ultra-high resolution display for troubleshooting defects.rnAlarm history provides critical information on coated rolls for downstream processes such as slitting. The impact of timely trouble-shooting on improved Product Quality and Process Economics derived from material savings, scrap reduction and faster start-ups/product change-overs can be significant.
机译：在制造的各个阶段，基于计算机的在线测量系统在挤出涂层工艺的故障排除中都扮演着至关重要的角色。该系统连续监视多个过程变量，并对数据趋势进行过程监视。可以连续显示各种温度，压力和速度随时间变化的趋势，以及涂层厚度以显示因果关系。高度的过程可视性对于生产线操作员和过程工程师在启动和更改产品时设置设备以及持续监控生产具有巨大价值。该系统通过在横向和向下卷筒纸方向上进行有效的过程控制来确保全幅涂布规格的均匀性，同时监控基材的变异性。诸如过程方差分析器和FFT之类的软件功能可提供有效的过程分析工具，以解决由磨损的过程设备引起的不受控制的高频短期机器方向变化的问题。可以集成其他传感器（例如视觉检查系统）以显示超高分辨率的显示器，以解决故障。警报历史记录可在涂布辊上提供关键信息，用于下游过程（例如纵切）。及时的故障排除对节省材料，减少废料和加快启动/产品转换的速度对提高产品质量和过程经济性的影响是巨大的。

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