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Roll-Coater VCR 100

Vertical Coating and Drying of inner layers with VCR100

Vcr100

The Roll Coater VCR 100 coats both sides of inner layers with resist vertically.
The loader brings the inner layers into the recirculating clamps for transport through the system . The inner layers are hold at their upper edge (approx.10 mm - 0,4") by clamps. Their upper egde will not be coated. So there will be no debris formation resulting from flaking resist. All process steps (cleaning, coating, evaporation, drying, cooling) are done in this vertical position.
The typical drying temperature will be between 90° and 100° C, however this is ink dependent. After drying the inner layers will be cooled down to 25°C and unloaded for further processing.

1. Cleaning

Pick-up rollers remove particles deposits from the surface of inner layers and transfer them to an adhesive roller. Cleaning is done immediately before coating to avoid new particle deposits.

2. Coating

The coater consists of 8 vertically installed rolls, 4 on each side of panel. The doctor roll transfers the coating material on the coating roll. The coating roll coats the inner layers. 2 transfer rolls drive the coating and doctor roll. The resist is contained in the inner space between the 4 rolls. The bottom of the rolls is sealed to maintain the resist in the reservoir. Bottom end seals are arranged with drain method and a collection pan to contain any coating material for clean-up process.

3. Drying

Drying can be done by convection heat or by IR radiation alternatively.
A combination of both is possible too.
The freshly coated inner layers evaporate in the inspection area.
The inspection area is viewable by sight-glass doors. The coating result can be seen immediately. The double-sided drying is performed in three separate dryer units at a temperature of approx. 100°C. After drying inner layers are cooled down to approx. 25°C. Room air is drawn in and led through a heater exchanger. The used cool air will be led to the exhaust air.

4. Loading and unloading system

In the infeed area the cleaned inner layers are brought forward by vacuum suction and swung into a vertical position.
As soon as the clamps are opened, the panel is fixed and the clamps will close.
The panels are suspended tightly in the clamps.They are transported this way through the entire process.
After cooling unloading will be done the same way but in reverse sequence.
Panels are removed from the previously opened clamps and deposited on the exit belt. They will be transported to the following process.

Features:

  • Holding the inner layers at their upper edge, which remains uncoated
  • No debris formation resulting from flaking resist
  • Different panels sizes without change of system
  • Even warped panels are accepted
  • Easy access for maintenance and to cleaning area
  • Modular design of dryer units, easy to extend
  • Less space requirements, narrow footprint construction
  • Specially effective drying, short modules
  • Inspection area immediately after coating
  • Secure transport in clamps, independent from coating system
  • Complete equipment made of stainless steel

Specification:

Working height: 950 ± 50 mm / 37,5" ± 2"
Dimensions: (l x w x h): 10,860 x 800 (1,610)* x 2,000 (2,560)*mm/ 36’ x 2.6’ (5.3’) x 6.6’ (8.4’)
Frame and Panelling : V2A stainless steel
Min. size: 300 x 300 mm / 12 x 12"
Max. size: 750 x 750 mm / 30 x 30"
Coating speed: 1-3 m/min. (typ.) = 3 panel/min., 3 – 9’
Resist supply container:  25 l, 7 gallons
Transport speed: 1-2m/min. (typ.) = 3 panel/min., 3-9'/min
No. of heating circuits:  3
Heating length:  4,5 m ; 15’
Cooling length:  1,5 m; 5’
Drive capacity: 3 KW
Temperature of resist: Approx. 22°C, 72°F
Compressed air:  6 bar, 90 PSI

Product Info

Curtain Coater LG250-63

 

mass-logo

 

PCB X-Ray Inspection

Coating of pcbs with photo imageable solder mask by pouring method

lg2202

This method can usually be applied with all photo inks available on the market.
Pcbs pass the ink curtain at a typical speed of 90 m/min.
The ink is automatically pumped into the coating head from the supply container.

A microprocessor-aided viscosity control in the ink container ensures a precise viscosity of the ink, by automatically adding solvents and permanent temperature control.

The coating head produces a vertically falling ink curtain. The pcbs are coated in the desired layer thickness in an extremely homogeneous way.

The coating unit consists of

  • Coating head
  • Ink supply tank
  • Solvent tank
  • Pump
  • Viscosity controller
  • Ink mixer

Normally the coating unit is rigidly mounted – type LG.
Alternatively the coating unit can be hold in rails – type LGW. It can be completely moved out. If a second ink station is available, the moved-out ink station can be replaced against a new one, freshly filled up. The ink can be kept operational at a separate location.


ADVANTAGES

  • Retooling, maintenance and cleaning work can quickly and easily be done
  • Trouble-free ink change within a few minutes
  • Transport belt V-Shaped or flat

MACHINE FEATURES 

  • Frame: tubular section, welded, made of stainless steel V2A
  • Panelling: stainless steel plate V2A
  • Transport belt: Multilayer fabric, coated with Urethan
  • Suitable lacquer: all prevailing lacquer systems
  • Viscosity: 40 – 110 sec. (DIN F4 measuring cup)
  • Layer thickness: dry 20 – 60µm
  • Working width: 625 mm
  • Transport speed: 0.2 – 5 m/min.
  • Connection load: 4 kW
  • Covering: Hood, transparent above coating unit
  • Exterior dimensions: 2,500 mm (l) x 1,000 mm (w) x 1,300 mm (h)
  • Working height: 900 ± 50 mm
  • Weight: 570 kg

OPTIONS/ALTERNATIVES

  • LGW: With movable coating unit
  • LG2: With two coating units, rigidly mounted in tandem
  • LGW 220E-SBU: Curtain coater for not-air conditioned rooms

All information subjected to change without notice!

For more information, visit the website or send us your information request.

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