Drop-on-demand printing of personalised orodispersible films fabricated by precision micro-dispensing. 2021

Chak Hin Tam, and Matthew Alexander, and Peter Belton, and Sheng Qi
School of Pharmacy, University of East Anglia, Norwich, UK.

Personalised orodispersible films (ODFs) manufactured at the point of care offer the possibility of adapting the dosing requirements for individual patients. Inkjet printing was extensively explored as a tool to produce personalised ODFs, but it is extensively limited to dispensing liquid with low viscosity and the interaction between ink and edible substrate complicates the fabrication process. In this study, we evaluated the feasibility of using a micro-dispensing (MD) jet system capable of accurately dispensing viscous liquid to fabricate substrate-free ODFs on-demand. The model inks containing hydroxypropyl methylcellulose (HPMC) and paracetamol were used to prepare personalised ODFs by expanding the film area. Cast films were used as the control sample to benchmark the mechanical properties, disintegration time, and dosing accuracy of MD printed ODFs. Both the cast and printed films showed smooth surface morphology without any bubbles. No significant difference was found in the disintegration time of the MD printed films compared to the cast films. High precision in dosing by MD printing was achieved. The dose of paracetamol had a linear correlation with the dimension of the printed films (R2 = 0.995). The results provide clear evidence of the potential of MD printing to fabricate ODFs and the knowledge foundation of advancing MD printing to a point-of-care small-batch manufacturing technology of personalised ODFs.

UI MeSH Term Description Entries
D007281 Ink Pigmented or colored fluid used for writing, staining, painting, drawing, printing, or copying images. Inks
D005079 Excipients Usually inert substances added to a prescription in order to provide suitable consistency to the dosage form. These include binders, matrix, base or diluent in pills, tablets, creams, salves, etc. Excipient,Stabilizing Agent,Stabilizing Agents,Suspending Agent,Suspending Agents,Agent, Stabilizing,Agent, Suspending,Agents, Stabilizing,Agents, Suspending
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D014783 Viscosity The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Viscosities
D016503 Drug Delivery Systems Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity. Drug Targeting,Delivery System, Drug,Delivery Systems, Drug,Drug Delivery System,Drug Targetings,System, Drug Delivery,Systems, Drug Delivery,Targeting, Drug,Targetings, Drug
D065347 Hypromellose Derivatives Polymeric compounds that contain repeating units of hydroxypropyl methylcellulose. The properties of hypromellose polymers can vary greatly and are defined by their molecular weight, the percentage of hydroxyl groups, the percentage of hydroxypropyl groups, and viscosity measurements. They are found a broad variety of commercial products such as FOOD ADDITIVES; EXCIPIENTS; and LUBRICANTS. HPMC 2910,HPMC-K-100 M,Hydroxypropyl Methylcellulose,Hydroxypropylmethylcellulose,Hypromellose,K-8515,K8515,MHPC Polymer,Methocel E,Methoxyhydroxypropylcellulose,Methyl Hydroxypropyl Cellulose,Methyl-hydroxypropyl-cellulose,Derivative, Hypromellose,Derivatives, Hypromellose,HPMC K 100 M,HPMCK100 M,Hypromellose Derivative,K 8515
D066330 Printing, Three-Dimensional Process for making, building or constructing a physical object from a three-dimensional digital model by laying down many successive thin layers of building material. 3-D Printing,3-Dimensional Printing,3D Printing,Three-Dimensional Printing,3 D Printing,3 Dimensional Printing,3-D Printings,3-Dimensional Printings,3D Printings,Printing, 3-D,Printing, 3-Dimensional,Printing, 3D,Printing, Three Dimensional,Printings, 3-D,Printings, 3-Dimensional,Printings, 3D,Printings, Three-Dimensional,Three Dimensional Printing,Three-Dimensional Printings

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