Screen forming apparatus and method

Screen forming apparatus comprising:

• a first pipe of a predetermined length;
• a pump for conveying a working fluid under pressure to said first pipe;
• a plurality of nozzles for ejecting working fluid so as to form a screen, said nozzles being placed along the longitudinal direction of said first pipe at predetermined intervals;
• recovering means spaced from and facing said first pipe for recovering working fluid ejected from said nozzles;
• and
• wherein said recovering means includes a second pipe having substantially the said same length as said first pipe, said second pipe having a configuration generally similar to said first pipe, and extending parallel to said first pipe and means to draw said working fluid into said second pipe.

Screen forming apparatus comprising:

• a first pipe of a predetermined length;
• a pump for conveying a working fluid under pressure to said first pipe;
• a plurality of nozzles for ejecting working fluid so as to form a screen, said nozzles being placed along the longitudinal direction of said first pipe at predetermined intervals;
• recovering means spaced from and facing said first pipe for recovering working fluid ejected from said nozzles;
• and
• wherein said working fluid includes whitish, non-transparent gas.