Processing a detergent powder formulation: Direct compression, and high shear wet granulation followed by compression

摘要: Abstract In this paper, detergent tablets processing for industrial multi-purpose uses, i.e., hard surfaces cleaning, has been investigated. The formulation is a complex blend of over 95% powders: inorganic salts alkaline metal called builders, and system surfactants composed anionic nonionic organic molecules. Two processes were examined: wet granulation prior to compression (processing 1), direct 2). Wet performed in laboratory high shear mixer with powdered raw materials excluding one the salts, metasilicate. This “initial granulation.” parameters studied are intensity related impeller speed, amount liquid added, water being used as binder. Powdered granulated formulations characterized terms particle size distribution, flowability, compressibility. Compression on uniaxial press, either granules mixed sodium pentahydrated metasilicate 1, or mix pre-granulated materials, here compression,” 2. following features compacts considered: mechanical strength, friability, density, solubility cold water, microscope observation fractured surfaces. Comparison showed that leads increased properties due higher plasticity stronger binding while it slightly deactivates product. material significantly increases dissolution times both cases.