Definition of the type, number, position and profile of the drainage elements, based on the needs of the customer needs.
Objective:
• Improve the formation
• Produce a qualitatively consistent sheet
• Retention control
• Increase the drainage capacity and/or increase savings by producing a higher finished
dryness level
By:
• Turbulence level control
• Foil positioning
• Foil geometry
• Hydrodynamic drainage
• Control of the vacuum level in low, medium and high vacuum zone

COMPLETE DRAINAGE SYSTEM
For paper industry
INITIAL FORMING ZONE FORMING BOARD
The function of forming board is to:
• support the forming fabric in the landing point of the jet
• be can easily positioned to use the power of the jet for a correct
initial drainage
FORMATION ZONE HYDROFOIL / STEPFOIL BOX
This type of drainage elements must:
• produce sufficient level of turbulence by mean of number, position and
profile of the foils; the scope is to avoid the fibre flocculation which
prevents a good formation of the sheet
LOW AND MEDIUM VACUUM ZONE VACUUMFOIL BOX / DUOFLOW BOX
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Read MoreHIGH VACUUM ZONE SUCTION BOX – BIVAC TRIVAC – QUADRIVAC
With the increase of the dry level, in the sheet, it is necessary to apply a progressively higher vacuum level to overcome the resistance at the drying.
Read MoreVACUUM plant
The complete vacuum plant, from projection to construction and final assembly
Read MoreUHLE BOXES
UHLE boxes in the felt press sections stand out as key players, significantly influencing the efficiency of the process.
Read MoreMetalwork and grinding of technical ceramics


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