Preparation of Thin Layers on Plates

The paramount importance with regard to the preparation of thin layer is that it must be uniform and consistent throughout. Various means have been put forward to apply thin layers of powdered or their suspensions or their slurries to the carrier plates with a view to achieve an uniform layer throughout the length of the plates. These are namely  

Disadvantages There are mainly two major disadvantages of this technique, namely  

Belgian Patent No 625012 It essentially consists of spraying either molten or partially molten absorbent onto a glass plate, for instance an alumina film prepared by melting and aluminium rod with an oxyacetylene flame and subsequently spraying the molten adsorbent onto a glass plate. 

Egon Stahl s apparatus exclusively designed for the application of thin-adsorbent layers which broadly comprises of two major parts, namely  

the slurry (C) is put in the spreader (B) and then moved along the direction of application onto the surface of the glass plate (A) to obtain an uniform layer, 

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