Abstract
This chapter first presents and discusses the physical phenomena taking place in both injection molding machines and the molds, which enable the injection molding process to produce shaped thermoplastic polymer products reproducibly, inexpensively and rapidly, with only minimum industrial waste stream. Industrial waste generated aside, it then addresses the question of whether the existing injection molding processes and equipment are appropriate for producing tablets of active pharmaceutical ingredient (API) solid solutions in polymer excipients, where the total dissolution of the API in the molten excipient, and the absence of API process-generated degradation must be guaranteed. The arguments presented indicate the need for specific modifications of the existing injection molding processes, which change and improve the melting and laminar mixing generated, to assure API dissolution, and decrease the chances of API degradation originating from the process.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Caras FC (1963) “Spiral mold for thermosets.” Mod Plast 41:140
Chabot J, Malloy RA (1997) “A history of thermoplastics injection molding. Part I—the birth of an industry”. J Inj Molding 1:1
Cheng L, Guo S, Wu W (2009) “Characterization and in-vitro release of praziquantel from ε−caprolactone implants.” Int J Pharm 377:112–119
Clarke AJ (2005) US Patent Application Publication No US2005/0202090 A1, assigned to GlaxoSmithKline
Donovan RC (1971) Polym Eng Sci 11:353
Gogos CG, Liu H, Wang P (2012) Chapter 13, “Laminar dispersive and distributive mixing and applications to HME”. In Douroumis D (ed) Hot-melt extrusion. Wiley, Weinheim
Gogos CG, Tadmor Z, Kim MH (1998) Melting phenomena and mechanisms in polymer processing equipment”. Adv Polym Technol 17:285–305
Quinten T, Vervaet C et al (2009a) “Evaluation of injection molding as a pharmaceutical technology to produce matrix tablets.” Eur J Pharm Biopharm 71:145–154
Quinten T, Vervaet C et al (2009b) “Development of injection molded matrix tablets based on mixtures of EC and L-HPC.” Eur J Pharm Sci 37:207–216
Quinten T, Vervaet C et al (2011) “Development and evaluation of injection-molded sustained-release tablets containing EC and PEO.” Drug Devel Ind Pharm 37(2):149–159
Rose W (1961) Fluid—fluid interfaces in steady motion”. Nature 191:242–243
Rothen-Weihold A et al (1989) “Injection molding versus extrusion as manufacturing technique for the preparation of biodegradable implants.” Eur J Pharm Biopharm 48(2):113–121
Rubin I. I (1972) Injection molding—theory and practice. Wiley—Interscience, New York
Schmidt LR (1974) “A special mold and tracer technique for studying shear and extensional flows in a mold cavity during injection molding.” Polym Eng Sci 14:797
Tadmor Z, Gogos GG (2006) Principles of polymer processing, 2nd edn. Wiley—Interscience, New York ((a) Chapter 1; (b) Chapter 13; (c) Chapter 5 and Section 9.3; (d) Sections 5.9 and 10.3; (e) Chapter 7)
Tadmor Z, Klein L (1970) Engineering principles of plasticating extrusion. Van Nostrand Reinhold Book Co., New York
Tadmor Z (1974) J Appl Pol Sci 18:1753
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 American Association of Pharmaceutical Scientists
About this chapter
Cite this chapter
Gogos, C. (2013). Excipient or API Melt Processing via Injection Molding. In: Repka, M., Langley, N., DiNunzio, J. (eds) Melt Extrusion. AAPS Advances in the Pharmaceutical Sciences Series, vol 9. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8432-5_11
Download citation
DOI: https://doi.org/10.1007/978-1-4614-8432-5_11
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-8431-8
Online ISBN: 978-1-4614-8432-5
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)