DL 500

The DL 500 is a double sided conveyorised spray etching machine with integrated rinsing zone. This machine is easy to maintain and fits perfectly to a modern PCB laboratory. The maximum capacity within one hour is 10 m². Designed for being used for laboratory purposes, there are lots of different applications (e.g. spray developing of tenting or solder mask) and options available. Of course the machine can be modified according to your needs.

On demand we can deliver the DL500 with a frequency converter fitting all power systems world wide






  • Working width 510 mm
  • Stepless adjustable conveyor speed 0 - 1.5 m/min.
  • Joint free belt drive
  • PCB is firmly secured by upper and lower transport rollers
  • Powerful etchant pump (200 l/min)
  • Double sided etching with 4 x 14 flat jet nozzles. Due to special nozzle pattern, there are 6 rows of nozzles for each side !!
  • Adjustable spray pressure. Upper and lower spray pressure can be regulated separately
  • Thermostat with digital read out and self-safe overheat cut-off
  • integrated rinse zone. Optional fresh water rinse with solenoid valve or recycle water tank
  • Drying by squeezing rollers with tissue
  • Sturdy stand alone construction from PVC and Titanium
  • Transparent top with security switch
  • Line definition down to 35 µm lines and spaces on 18 µm copper
  • 1000W quartz heater
  • Maintenance free design, just normal cleaning/refill
  • Easy dis-assembly and full access to all inner parts without special tools
suitable for all regular etching agents. We recommend to use ferric-chloride. Please pay attention to the special features of each etchant (crystallization of per-sulfates and ammonium, exothermic reactions while etching). For alkaline etching, machine must be modified.

Bungard dl 500 detail motor

Technical Data:

  • Power supply: 230 V~, 50 Hz, 1.5 kW
  • Size (L x W x H): 120 cm x 67 cm x 129 cm
  • Weight: approx. 100kg
  • Working width: 510 mm
  • Tank capacity: 55 l

Technical changes without note.

Bungard DL 500 - open  


  • Variant 1 : Spray Developing Machine
    The DL 500 can be used as a spray developing machine for negative and positive etch resist or solder mask without modifications. Simply change the media!
  • Variant 2 : Spray Etching Machine
    standard variant
Bungard DL 500 - Option spray stripping machine
  • Variant 3 : Spray Stripping Machine
    This machine is equipped with an additional filter basket at the front side of the machine to remove residues of tenting or solder mask from the stripping liquid (see picture on the right).


Bungard DL 500 - Option recycled rinsing tank

Option 1 : Closed-loop Rinsing Tank

recycled rinsing tank with magnetic centrifugal pump instead of fresh water. Saves water costs. With a cock drain valve the used rinsing water can be used to compensate evaporation losses or to make up new etching liquid. Waste water free rinsing technique. The magnetic valve from the standard version is here obsolete. The tank fits underneath the machine body of DL 500. Format: 200x600x700 mm (BxHxT).

Bungard DL 500 - Option conveyorised rinsing unit

Option 2 : Conveyorised Rinsing Unit

a) conveyorised rinsing unit, stand alone version with adjustable conveyor speed, integrated magnetic valve for fresh water inlet (controlled by DL 500), squeeze drying roller. Transport width and height same as DL 500. Format: 450 x 940 x 620 mm (BxHxT)

b) as above but second stage cascade rinse (in combination with recycled rinse tank and magnetic centrifugal pump), 3 way cock valve to bypass rinsing water e.g. to water treatment unit IONEX. Format: 450 x 940 x 620 mm (BxHxT)

Bungard DL 500 - Option inspection table

Option 3 : Inspection Table

Control zone in form of a roller table (not conveyorised). This roller table can be mounted between two DL 500 (e.g. Developer and Etcher), between DL 500 and rinsing unit or as a single exit table. Format ca. 620x530x50 mm (BxHxT)

Bungard DL 500 - Option production line

Option 4 : Production Line

3 DL 500 and the rinsing unit can be connected to a small production line (Developing – Etching – Stripping - Cleaning) coupled together with inspection tables. Of course other variants are possible as well.

Bungard DL 500 - Option spray stripping machine

Option 5 : DL 500 S

This machine is equipped with an additional filter basket at the front side of the machine to remove residues of tenting or solder mask from the stripping liquid.

See also Variant 3


Option 6 : DL 500 Vario

DL 500 Vario with separate adjustable spray pressure for the upper and lower side. This option is today standard in all DL 500 machines

Bungard DL 500 Vario - separate adjustable spray pressure

Bungard DL 500 - Option Cooler

Option 7 : Cooler

Some etching agents as well as other chemicals tend to exothermic reactions and need to be cooled during the treatment process. For this purpose we offer a special cooler for the DL 500. The Cooler consists of a recycling rinsing tank with cooling coils for the etching liquid. With a cock valve the etching agent is adjustable bypassed through the cooler.

Bungard DL 500 - Option Cooler  

Option 8 : DL 500 triple phases power supply

You can order the DL 500 either with a single phases or triple phases power supply.


Bungard DL 500 - Option filter unit

Option 9 : Filter unit

On request you can equipp your DL 500 with one or two 10 " filter units to remove residues from the etching process. You can easily adjust the filter throughput via cock valve. On the picture you can see a filter unit together with an exit table.

Bungard DL 500 - Option exit table

Option  10 : Exit Table

Bungard DL 500 - Option exit table



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