Membrane Production

 

The used TFC-membranes are constructed by an active layer of Polyamid (PA), a porous carrying-layer out of  Polysulfon (PS) and possibly a Polyester (PES) support-layer.
The membrane cushions consist of 2 ultrasonic-welded membrane-sheets, seperated by spacer-fabrics. The production is classified in 2 steps: 
 
1. Production of the blank
 
Both membrane-sheets are combined with the spacer and pre-fixed by small welding-spots.
A thermical method is used here, which staples the blanks on 4 areas to simplify the next production steps
 
 
Membranzusammenführung
 
 
 
2. welding of the membrane cushion
 
MembranherstellungVerschweißen
 
 
 
Verschweißen     
 
 
The membran blanks are welded by a ultrasonic-process and cut to the final octagonal form.
The proper welding is essential for the quality of the final membrane. This is controlled by pressure and energy input during the welding process.

Utraschallverschweißen

 
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