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Abstract

Manuscript aims to furnish glimpse on coating processes (CoPr). The coating is the process of applying coating materials (CoMa) onto the substrate surface (S-S). With time and space dimension of CoPr, that upraised as sugarcoating (S-C) expanded to film-coating (F-C) and specialized one. Lengthy and wearisome processing and skilled operators issues inherited to S-C spring-up F-C and its improvement from non-aqueous F-C to aqueous film-coating (AF-C). Nonaqueous film-coating processes (F-CP) make use of a volatile organic solvent (VOS) while AF-C processes uses aqueous solvent (AS), as a solvent system for coating formulations (C-F). VOS is preferred over AS in F-CP, and momentum for using AS has been accelerating from past few decades. Issues from VOS"s use upraised relating to safety; worker hygiene & safety; toxicity; environmental pollution; etc. These upraised issues intensified, thus, nowadays, AF-C processes are replacing VOS-based F-CP. Later on, finding the novelty of coating and CoPr thru coating of particulates became another dimension of expansion. This involves modification and/or alteration in innate properties of particulates, chemically and/or physically, thru coating, is for find their worthy attributes and functionalities. This dimensional expansion exploits the applicability of the dry-coating process (D-CP) and wetcoating process (W-CP). D-CP comprises novel and specialized CoPr based on novel technologies while W-CP comprises conventional and novel CoPr. Some state-of-art CoPr are AF-C process, hot-melt coating (H-MC) process, electrical-electrostatic deposition process, gas-/vapor-phase process, aerosolized CoPr, photo-curable CoPr, Resonant acoustic CoPr, thermal and mechanical process, thermo-mechanical CoPr, fluidized-bed processes, Supercell ® CoPr, etc. CoPr and its dimensional expansion briefed for updating professionals.INTRODUCTION: Solid dosage forms comprise a major fraction of pharmaceutical products, and their formulation ingredients, in most instances, are in particulate state 1-6 . In some instances of manufacturing processes, inevitable is a coating of themselves or component particulates [7][8][9][10][11] . Coating of solid dosage form or their component particulates involves deposition of CoMa, as a layer, snugly affixes on surface of said substrates [9][10][11] .