73" (1.8M) Voith Master Jet II Headbox Stainless Steel Design

Description

Used 73" (1.8 m) Voith Master Jet II F/L headbox. Stainless steel design. New 2004. Last used for paper currency with the following specifications:

HEADBOX:
Master Jet II F/L:
Type Master Jet II F/L – 25/2-MJ-H-SC-1L

High-turbulence headbox with pulsation damper, lateral inflow into two headers, ModuleJet units, distribution block, stilling chamber, turbulence tube bank and nozzle lamellae; with horizontally adjustable bottom lip, vertically adjustable top-lip beam, long spindles for slice blade deflection.
Headbox of stainless steel.
Areas in contact with stock electropolished.

DESIGN DATA:
Headbox size: 25/2
Pond width: 82.91 inches / 2106 mm
Design speed (structural): 1500 fpm / 457 m/min
Operating speed (max.): 1050 fpm / 320 m/min
Operating speed (future max.): 1050 fpm / 320 m/min
Operating speed (min.): 466 fpm / 142 m/min
Rod spacing (lip) approx.: 7.87 inches / 200 mm
Number of rods (lip): 12
Module spacing approx.: 2.59 inches / 65.8 mm
Number of modules: 32
Throughput onto wire (max.): 1829 gpm / 6932 l/min
Throughput onto wire (future max.): 2258 gpm / 8548 l/min
Throughput onto wire (min): 1716 gpm / 6496 l/min
Max. slice opening (running): 1.41 inches / 35.8 mm
Max. slice opening (cleaning): 4.7 inches / 120 mm

BASIC DESIGN DATA:

MACHINE DESIGN DATA:

Machine Information:
Maximum operating speed (future): 1050 fpm / 320 m/min
Maximum operating speed (current): 1050 fpm / 320 m/min
Minimum operating speed (future): 500 fpm / 152 m/min
Minimum operating speed (current): 850 fpm / 259 m/min
Reel trim (max): 73 inches / 1854 mm
Wire width: 87 inches / 2210 mm
Pond width: 82.91 inches / 2106 mm

Paper Grade:
Products: Graphic Specialities
Basis weight range @ reel (current): 41–71 lb / 3300 ft²
Basis weight range @ reel (future): 33–150 lb / 3300 ft²
Grades: Coated papers, watermark, 25% cotton (future)

Furnish (current):
Hardwood: 81–92%
Softwood: 8–19%
Cotton: 25% (future possible)
Filler (headbox): 13.7–17.6%
Freeness (after tickler refiners): 380–400 CSF