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procedure and device for mechanical tvettning and rengoring of solid materials and foremal with anvendning of fosfatfattiga or phosphate free tvett and rengoringsmedel
procedure and device for mechanical tvettning and rengoring of solid materials and foremal with anvendning of fosfatfattiga or phosphate free tvett and rengoringsmedel
The machine washing of solid textiles or dishes is improved when the wash water is passed through a cation exchange agent of the formula: (M2/nO)x.Me2O3.(SiO2)y, wherein M is a cation of valence n interchangeable with calcium, Me is a member selected from aluminum and boron, x is a number from 0.7 to 1.5 and y is a number from 0.8 to 6, said agent having a calcium binding power of at least 50 mg. of CaO per gram, said agent being maintained during said washing out of contact with the objects being washed within a filter apparatus. Apparatus for carrying out the process includes means for circulating the wash water through a vessel containing the cation exchange agent in porous solid or in fluidized bed form within a filter means.
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