Toothpastes are generally clear gel or white abrasive pastes. There are a wide range of ingredients which varies from region to region. The following are the basic ingredients involved in processing toothpastes
1. Aqueous phase: comprising of water, glycerine and other liquids.
2. Rheology Modifiers: CMC, Xanthum gum, cellulose gum, etc.
3. Fillers & Abrasives: Hydrated silica, Sodium Bicarbonate, etc.
4. Surfactants: SLES.
5. Active Ingredients: Sodium fluoride.
6. Flavors: Mint &Flavoring oils.
7. Sweeteners: Mainly sodium saccharinate.
8. Coloring: Mainly Titanium Di-oxide.
9. Preservatives: Sodium Benzoate, Ethyl Paraben, Methyl Paraben.
1. Dilution of surfactants requires much high force, mainly in case of SLES.
2. Rheology modifiers tend to form lumps which are difficult to break down, need high shear to break lumps.
3. Some low density ingredients are difficult to incorporate and wet out.
4. Aeration due to high powder concentration and use of surfactants, need to be overcome.
5. De-agglomeration caused due to abrasive material needs to be broken.
Hindu Engineers range of high shear mixers is a perfect solution for the processing of toothpaste-making machines. The selection of the homogenizer depends on the desired stability of the solution as well as the throughput required. The process is as follows.
• Preparation of aqueous phase prior to addition of fillers and abrasive ingredients.
• De-agglomerating the mixture before the surfactants and thickening agents are added.
• Processing under vacuum to overcome aeration of the product.
Hindu Engineers work on the principle of shear force being produced as a set of rotor and stator due to the material being flown in between the least tolerance thus causing the material to be sheared. The material is being sucked in from the rotor and thrown outwards to the stator walls due to the high centrifugal force produced due to the rotor and the material is sheared in between the rotor and stator to provide the end results.
1. Intank Batch Type Homogenizer:
>> Suitable for smaller batches up to a maximum of 800 Liters.
>> Portable model to enable usage in a multiple vessels.
>> Wide range of stator designs to make it versatile for a wide range of applications.
2. Inline High Shear Homogenizer:
>> Works best even for higher batch sized up to 10 kL.
>> Wide range of models to choose from: Single Stage, Two Stage & Four Stage Model.
>> Most efficient method for dispersion and results in most superior quality.
>> Aeration free product as the process is under an enclosed system.
>> Better consistency with much lesser processing times thus better process efficiency.
>> Agglomerate free products thus resulting in the consistency of the solution
>> Rapid mixing times even for liquids with different viscosities thus no chances of degradation while processing.
>> Better yield of thickening agents, thus much shelf life and reduces raw material cost.