间歇式双层槽涂覆工艺的实际操作

IF 2.2 4区工程技术 Q2 MECHANICS

Korea-Australia Rheology Journal Pub Date : 2022-06-14 DOI:10.1007/s13367-022-00033-y

Jin Seok Park, Sanghun Jee, Byoungjin Chun, Hyun Wook Jung

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引用次数: 1

摘要

本文首次采用步进变化的进口流，对牛顿液体双层补片在双层槽涂覆过程中的瞬态行为进行了数值研究。为了进一步调整贴片周期的前后边缘，考虑涂层珠区底层液体的流动状态，提出了顶层和底层之间的启动和结束滞后时间。精心选择的滞后时间显著减少了双层贴片前后边缘的缺陷。还发现，较大的涂层粘度导致在模唇上留下更多的残留物，从而影响下一个贴片周期。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Practical operations for intermittent dual-layer slot coating processes

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Practical operations for intermittent dual-layer slot coating processes

Transient behaviors of dual-layered patches for Newtonian liquids were numerically investigated in dual-layer slot coating processes for the first time using step-changed inlet flows. To further tune the leading and trailing edges in a patch cycle, startup and end lag times between the top and bottom layers were proposed, considering the flow state of a bottom-layer liquid in a coating bead region. Carefully chosen lag times significantly reduced the defects in the leading and trailing edges of a dual-layered patch. It was also found that a greater coating layer viscosity results in a greater amount of residue left on the die lips, which affects the next patch cycle.

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来源期刊

Korea-Australia Rheology Journal 工程技术-高分子科学

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Korea-Australia Rheology Journal is devoted to fundamental and applied research with immediate or potential value in rheology, covering the science of the deformation and flow of materials. Emphases are placed on experimental and numerical advances in the areas of complex fluids. The journal offers insight into characterization and understanding of technologically important materials with a wide range of practical applications.