Oxidized Starch (Royal OXI)
"Royal-OXI" is a surface sizing starch, developed for use in the size press and paper coating formulations. It can be applied in surface sizers of all configurations as well as applied in coating recipes. Royal-OXI is customized for individual requirement of paper makers.
While a low viscosity-high solid formulation gives more penetration and better internal strength, a high viscosity-low solid type stays more on surface, gives better surface strength and stiffness. Usual pick-up of Royal-OXI varies between 2-6% depending on starch as well as machine parameters.
Paste of Royal-OXI is quite stable to retrogradations, its film is relatively clearer and stronger and its use helps in following: Better filling of voids in paper resulting Improved print-ability and better ink holding., Better internal and surface strength & smoothness, Better stiffness and better runnability of kraft grades on automatic corrugators.
|Source||Maize/Tapioca Starch Powders|
|Appearance||Fine, white, odourless, dry powder|
|Size of granules||Passes 85 mesh|
|PH of 10 % aqueous solution||6-8 (as desired)|
|Ash (Dry solid basis)||less than 1 %|
|Brightness (ISO)||90 (+ 2% / -1%)|
|D.S.||Variable as required|
|Viscosity (Brookfield); 2%;70°C||10-40 cp (variable as desired)|
|Phase Separation||No phase separation for 24 hours.|
|Retrogradation||No retrogradation upto 24 hours.|
METHOD OF PREPARATION
Prepare a lump-free suspension in fresh cold water by continuous stirring.
Gradually heat (direct or jacketed) to +90°C, and keep under mild stirring for 20-30 minutes.
As a standard, it is available in 50 Kg. HDPE bags with inner liner.
However, special packing (like Jumbo bags/Paper bags/25 Kg bags) can be arranged as required.
HANDLING, STORAGE AND SAMPLING OF PRODUCT
Do not use hooks, drag the bags on truck or any other platform.
Make sure unloading labours have clean hands and heads covered with clean cloth/cap.
Bags should be stored on clean dry platform, kept covered with clean piece of tarpaulin. Also ensure that the storage area is dry, covered, away from humid conditions, hazardous, explosive and aromatic chemicals.
Shelf life, if stored properly, can be one year.