Scale-Up and Processing-Structure-Property Analysis of the Blown Film Process
Scale-Up and Processing-Structure-Property Analysis of the Blown Film Process
复制标题
吹膜工艺的放大和加工结构性能分析
DOI：
10.1177/875608799401000304
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发表时间：
1994
影响因子：
3.1
通讯作者：
A. Sukhadia
中科院分区：
文献类型：
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作者：
A. Sukhadia
吹膜加工是一个重要但非常复杂的过程。 T. Kanai 等人早些时候提出了一种吹膜放大策略。在这项工作中被重新审视。使用该策略非常成功地扩大了吹膜工艺的规模。此外，该工作表明该策略与树脂或聚合物类型、模具尺寸、模具间隙和挤出差异（例如模具和挤出机剪切速率）无关，前提是满足该策略设定的所有其他标准。利用气泡运动学发现，在放大条件下，纵向和横向的主应变率分布以及冷却速率分布很大程度上相似。高分辨率扫描电子显微照片显示，在放大条件下形成的堆叠层状形态也很大程度上相似，从而产生相同的薄膜特性。最后，提出了应变率、形态和薄膜特性之间的一些趋势。
Blown film processing is an important but very complex process. A blown film scale-up strategy proposed earlier by T. Kanai et al. was revisited in this work. The blown film process was scaled up very successfully using that strategy. Furthermore, the strategy is shown by this work to be independent of resin or polymer type, die size, die gap and extrusion differences such as die and extruder shear rates provided that all of the other criteria set by the strategy are fulfilled. Using bubble kinematics it was found that the principal strain rate profiles in the machine and transverse directions and the cooling rate pro files were largely similar under the scale-up conditions. High resolution scan ning electron micrographs showed that the stacked lamellar morphology that is developed under scale-up conditions is also largely similar-resulting in equivalent film properties. Lastly, some trends between the strain rates, mor phology and film properties are suggested.