Hydraulic multilayer press

MLP-L

For the production of multilayer printed circuit boards

The multilayer presses of the MLP-L series are devices for the production of multilayer printed circuit boards (multilayers) for prototype and small series production.

Multilayer

Multi-layer circuits made of different PCB materials can be pressed together in the system. The even hydraulic pressure distribution in combination with the vacuum frame system and freely programmable preheating and process temperature ensures optimum material bonding across the entire work surface. With its separately controlled electrically heated pressing plates and its hydraulic system, the MLP-L model series offers extensive functionality for a wide range of manufacturing processes. 

Automated process execution and parameter management

The MLP-L system is loaded with pressing tools from the front. It is operated via a graphic touchscreen panel. All process sequences are carried out automatically and managed .

The touchscreen panel shows the operator the current operating status, program stages and remaining running times in real time. The pressure is controlled continuously via a hydraulic system using a proportional valve and pressure transducer. The system can be cooled by an air supply or optionally by water cooling.

Loading side with tilting elements in the heating plate, which enable contact-free placement of the pressing tool during the loading process

Multilayer press

MLP-L-3040 VAC

Vacuum

optional

Pressing force

230 kN

Number of heating plates

2

Heating plate size

460 x 350 mm

Max. laminating area

400 x 300 mm

Surface load

approx. 1,000 kg/m²

Number of floors

1

Light width

80 mm

Weight

approx. 500 kg

Dimensions (L x W x H)

approx. 805 x 650 x 1,550 mm

Heating

Max. Heating temperature

250 °C

Max. Heating temperature with vacuum

200 °C

Process temperature

Freely programmable

Preheating temperature

Freely programmable

Heating time (40 °C to 175 °C, uncoated)

approx. 25 min

Power consumption

Heating plate 1

2.5 kW

Heating plate 2

2.5 kW

Hydraulics

1.5 kW

Vacuum

0.7 kW

Total energy requirement

approx. 7.5 kW

Total energy requirement with vacuum

approx. 8.3 kW

Mains connection

3 x 400 V / 50 Hz

Rated current

13,2 A

Nominal current with vacuum

14,2 A

Protection

16 A

Cooling

Cooling time

Freely programmable

Cooling system

Air supply
optional: water cooling

Cooling water quantity per pressing cycle (option)

approx. 100 l

Available accessories
Starter package, consisting of:

  • Vacuum frame
  • Base material inner layer
  • Base material outer layer
  • Prepregs
  • Release film
  • Partition plate

Functions in detail

Setpoint actual value Temperature Pressure
Setpoint actual value Temperature Pressure 2
Continuous displays during processing
  • Set temperature / actual temperature (mean value)
  • Set pressure / actual pressure
  • Total process time
  • Single process time
  • Remaining process time of all process cycles
  • Vacuum pressure (optional for MLP-L 3040 VAC)
Program and parameter input
Program and parameter input 2
Program and parameter inputs
  • Preheating
  • Pressure / temperature / time (each process phase individually)
  • Vacuum time (optional for MLP-L 3040 VAC)
  • 4 process phases for heating and cooling (optionally expandable)
  • Format / number of PCB packages
Press Handbertieb
Press Handbertieb 2
Manual operation
  • Cooling the press
  • Open press
  • Close press
  • Descaling press, each plate individually, descaling device required (optional)
  • Individual temperature display
Line diagram
Language
Additional functions
  • Password hierarchy (can be switched off by service technician)
  • Output of error messages (display)
  • Storage of process parameters in individual recipe files with their own name
  • Languages: German, English
  • Display pressure / temperature in line diagram
  • Display line diagram scroll over the entire cycle
Optional functions
  • Measured value output in ASCII format for conversion of the values to Excel on an external storage medium
  • Vacuum system with real-time display for model MLP-L 3040 VAC
Vacuum device

(optional for model MLP-L 3040 VAC)

Vacuum: < 0 20 mbar
Pump-out time: > 30 sec

The vacuum is generated via the vacuum frame. Vacuum generation and decompression are performed by the control system.

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Walter Lemmen GmbH

Birkenstraße 13 | 97892 Kreuzwertheim | Germany

  • +49 (0) 93 42-240977-0
  • info@walterlemmen.de
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