Influence of Die Length on Extrusion Pressure and Extrudate Surface Quality

Uličná, Miriam; Fekete, Roman; Juriga, Martin; Kabát, Juraj; Peciar, Peter; Peciar, Marian

doi:10.2478/scjme-2023-0015

Abstract

The extrusion process is very popular in industry. Nowadays, extrusion is also closely associated with the 3D printing process, but this article is focused on extrusion, as a process that is mainly associated with spheronization. The extrusion product is shaped in such a way that it is suitable for the ongoing spheronization process. With this two-step extrusion-spheronization (E–S) process, it is possible to create pellets with controlled high sphericity, which are desired in tablet and capsule production due to their easily characterized (and controlled) dosage profile and good flow properties. During extrusion, it is important to monitor several parameters. This post is dedicated to one of them and that is the length of the die and its effect on the extrusion pressure as well as the effect on the extrudate surface quality.

References

[1] Haring, A., Vetchy, D., Janovska, L., Krejcova, K., Rabiskova, M. „Differences in characteristics of pellets prepared by different pelletization methods“, Drug Development and Industrial Pharmacy 34 (3), pp. 289-296, 2008. DOI: 10.1080/03639040701655960.
Search in Google Scholar Back to article
[2] Peciar, P., Juriga, M., Guštafík, A., Kohútová, M., Jezsó, K. „Procesné strojníctvo – Príklady”, Bratislava: Spektrum STU, 2021. p. 127, ISBN 978-80-227-5081-3 (In Slovak).
Search in Google Scholar Back to article
[3] Benow, J., Bridgwater, J. „Paste Flow and Extrusion, Advanced Manufacturing Series“, Clarendon Press, Oxford. 1993. ISBN 9780198563389.
Search in Google Scholar Back to article
[4] Rahman, P., L. et al. „Ram Extrusion of Potato Starch Dough Through Multi-Holed Dies”, Food and Bioproducts Processing 80 (1), pp. 12-19. 2002. ISSN 0960-3085, DOI: 10.1205/096030802753479061
Search in Google Scholar Back to article
[5] Engländer A. et al. „A Preliminary Evaluation of Single Screw Paste Extrusion”, Chemical Engineering Research and Design 78 (5), pp. 790-794, 2000. ISSN 0263-8762, DOI: 10.1205/026387600527815
Search in Google Scholar Back to article
[6] Peck M.C, S. et al. „Roller Extrusion of a Ceramic Paste”, Industrial & Engineering Chemistry Research 44 (11), pp. 4099-4111. 2005. DOI: 10.1021/ie040270g
Search in Google Scholar Back to article
[7] Wilson, D. I., Rough, S. L. „Exploiting the curious characteristics of dense solid–liquid pastes“, Chemical Engineering Science 61 (13), pp. 4147-4154, 2006. ISSN 0009-2509. DOI: 10.1016/j.ces.2005.10.032
Search in Google Scholar Back to article
[8] Fekete, R., Jaššo, I., Peciar, M., Molnár, A. „Influence of rotor on extrusion pressure“, Powder Technology 141 (3), pp. 210-218. 2004. ISSN 0032-5910. DOI: 10.1016/j.powtec.2004.02.009
Search in Google Scholar Back to article
[9] Domanti, ATJ. „Surface fracture in paste extrusion“, Ph.D. thesis, University of Cambridge, Cambridge, UK, 1998.
Search in Google Scholar Back to article
[10] Domanti, ATJ., Horrobin, J. D., Bridgwater, J. „An investigation of fracture criteria for predicting surface fracture in paste extrusion“, International Journal of Mechanical Sciences 44 (7), pp 1381-1410. 2002. ISSN 0020-7403. DOI: 10.1016/S0020-7403(02)00047-4
Search in Google Scholar Back to article
[11] Jezsó, K., Peciar, P. „Influence of the selected sieving parameters on the sieving efficiency of material MCC Avicel PH102“, Strojnícky časopis - Journal of Mechanical Engineering 72 (1), pp. 77-88, 2022. ISSN 0039-2472. DOI: 10.2478/scjme-2022-0008
Search in Google Scholar Back to article
[12] Macho, O., Čierny, M., Gabrišová, Ľ., Juriga, M., Ružinský, R., Peciar, P. “Dynamic Image Analysis to Determine Granule Size and Shape, for Selected High Shear Granulation Process Parameters”, Strojnícky časopis - Journal of Mechanical Engineering 69 (4), pp. 57-64, 2019. DOI: 10.2478/scjme-2019-0043
Search in Google Scholar Back to article
[13] Peciar, P. et al. „Analysis of pharmaceutical excipient MCC Avicel PH102 using compaction equations”, Strojnícky časopis - Journal of Mechanical Engineering 66 (1), pp. 65-82, 2016. DOI: 10.1515/scjme-2016-0012
Search in Google Scholar Back to article
[14] Peciar, P. et al. „Particle Size Distribution Analysis of Beech Chips Depending on the Measurement Method“, Chemical Engineering Transaction 92, pp. 43-48. 2022. ISSN 2283-9216. DOI: 10.3303/CET2292008
Search in Google Scholar Back to article
[15] Uličná, M., Fekete, R., Likavčan, A., Peciar, M. „Liquid Migration in the Paste as the Result of Consolidation“, Strojnícky časopis - Journal of Mechanical Engineering 71 (1), pp. 131-138, 2021. ISSN 0039-2472. DOI: 10.2478/scjme-2021-0011
Search in Google Scholar Back to article

Influence of Die Length on Extrusion Pressure and Extrudate Surface Quality

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