NovaStar, NN237, 2-Roll Thermal-Bonding Calender, 2000mm Roll Face, 1850mm Useful Width, 250C Max Temperature (New)

Description

Main Specification
1. Produce material: non-woven (PET, nylon)
2. Calender roll: 1
3. Embossing roll: 1, diameter 460 mm, roll face 2000 mm, useful width 1850 mm
4. Cooling roll: 2, diameter 350 mm, roll face 2000 mm
5. Idle roll: 1, diameter 150 mm, roll face 2000 mm
6. Calender roll speed: 15 m/min (max.)
7. Calender roll drive via Tsubaki roll chain by one motor
8. Calender roll speed control by Mitsubishi vector control
9. Calender roll temperature: 250 degree C (max.)
10. Calender roll heating uses thermal oil by electric tubular heater
11. Individual heating for each calender roll
12. Calender roll linear pressure: 100 kg/cm (load = 20000 kgs)
13. 2 calender rolls up/down via bottom side cylinder
14. Emergency stop
Item #1: Vertical 2-Roll Calender
1. Main structure
  1. Very strong structure welded for bottom seat
  2. Flat steel plate frame for both side
  3. CNC machined for precise alignment
  4. Sandblast and painting
2. Calender roll
  1. Dimension: 460 mm (diameter) x 2000 mm (roll face)
  2. Roll body uses seamless steel pipe and complete stress relief
  3. Double shell with spiral wrapped channel
  4. Shaft uses alloy steel and heat treatment
  5. Roll surface is high temperature resistant alloy harden steel, HRC 50 ± 2
  6. Roll’s roundness, straightness and concentricity ± 0.01 mm
  7. Roll surface temperature tolerance is ± 1 degree C
  8. Chrome plated and precision grinding
  9. Thermal oil rotary joint for each end of roll
3. Embossing roll
  1. Dimension: 460 mm (diameter) x 2000 mm (roll face)
  2. Roll body uses seamless steel pipe and complete stress relief
  3. Double shell with spiral wrapped channel
  4. Shaft uses alloy steel and heat treatment
  5. Roll surface is Cr-Mo alloy steel, HRC 30 ± 2
  6. Roll’s roundness, straightness and concentricity ± 0.01 mm
  7. Roll surface temperature tolerance is ± 1 degree C
  8. Chrome plated and precision grinding
  9. Thermal oil rotary joint for each end of roll
4. Cooling roll: 2
  1. Dimension: 350 mm (diameter) x 2000 mm (roll face)
  2. Roll body uses seamless steel pipe and complete stress relief
  3. Double shell with spiral wrapped channel
  4. Shaft uses alloy steel and heat treatment
  5. Roll surface is no harden
  6. Roll’s roundness, straightness and concentricity ± 0.02 mm
  7. Roll surface temperature tolerance is ± 1 degree C
  8. Chrome plated and precision grinding
  9. Water rotary joint for each end of roll
5. Idle roll
  1. Dimension: 150 mm (diameter) x 2000 mm (roll face)
  2. Roll body uses seamless steel pipe and complete stress relief
  3. Shaft uses alloy steel and heat treatment
  4. Roll surface is chrome plated and grinding
6. Calender roll driven system
  1. Roll driven via Tsubaki roll chain by one motor
  2. 7 ½ HP (5.5 kW) Siemens AC inverter motor
  3. Planetary reducer + sprocket
  4. Tsubaki RS80-SUP roll chain
  5. Hydraulic cylinder chain tensioner
7. Cooling roll driven system
  1. Roll driven via Tsubaki roll chain by one motor
  2. 2 HP (1.5 kW) Siemens AC motor
  3. Planetary reducer + sprocket
  4. Tsubaki RS60 roll chain
8. Hydraulic oil system
  1. 150 mmØ x 100 ST cylinder: 2
  2. AC motor: 5 HP (3.75 kW)
  3. Working pressure: 140 kg/cm2 (max.)
  4. Fan cooling
9. Heavy duty bearing block: 6
  1. 150 mmØ FAG self-aligning roll bearing
  2. Bearing lubricate by manual
10. Gap adjustment: 4
  1. By manual (under working pressure 20000 kgs)
  2. Dial meter gauge indicate
11. Emergency stopped
  1. Wire + limit switch
12. Control cabinet
  1. Calender roll / cooling roll unit: speed control uses Mitsubishi AC vector control, roll speed indication (digital), synchronization speed control
  2. Thermal oil heating unit: temperature control = 2, temperature indication (digital) = 4, over heating alarm, 80 degree C auto-stop control
  3. Calender roll (up / down)
  4. Emergency stop
  5. Warning lamp
Item #2: Calender Roll Heating System
1. Closed loop thermal oil circulation system
2. Individual temperature control for each roll
3. Tempering medium: Monsanto thermal oil, 250 degree C (max.)
4. Electric tubular heater: 100 kW x 2
5. Circulation pump: 7.5 HP (5.5 kW) x 2
6. Temperature control: 2, PT100 + SCR
7. KSB valve: 6~9
8. 2" rotary joint: 2, inlet / outlet on the same way
9. Expansion TK: inner floating switch
Optional Items
1. Roll bearing self lubricate system: 2
  1. Self-lubricate pump unit: 2
  2. Manifold: 2
  3. Oil tube
  4. Flow rate adjust valve
2. Calender roll cooling system (for dropping temperature fast)
  1. Electric motor valve: 3, 3 way type
  2. Water cooler: 3, heat exchange
Supply Limits
1. Monsanto thermal oil
2. Pipe insulation package
3. Cooling tower and ice water machine
4. Piping between cooling tower and calender roll heating unit
5. Electric wiring from the cabinet to user
6. Masonry works and foundation

Dimensions	2000mm roll face
Working width	1,850 mm