Blister Classifier - WINBLISTER

The IMAL WINBLISTER system has been designed for the on-line detection of flaws or imperfections which may occur in wood-based panels (particleboard, OSB and MDF) such as unglued areas, blistered or blown areas, bubbles, cracks, etc. The system consists of a sturdy tubular steel beam; the fully detachable structure installs around the board roller conveyor at press or sander outlet, and comes complete with the electrical and pneumatic plant. An electric box, housing the microprocessor, is mounted on the side of the assembly, whereas the PC, monitor and printer are normally located in the control room. The particular functioning principle of the system (ultrasonic impulses) avoids any direct contact with the board as well as eliminating all the usual problems related to material wear.

The Winblister system is available in two versions, the BL100 version and the BC200 version. The standard BL100 model is able to detect bubbles and blisters and the board is represented in 4 colours. It is ideal for plywood lines and/or nonetheless meets the industry’s requirements without having to make a major investment.
In addition to the standard blister detecting capacity, the BC200 model represents the board in 256 colours and hence is able to perform an analysis of the internal bond. This version may also be installed for monitoring boards as thick as 120 mm.



  • Sturdy mechanical assembly of the structure and of the sensors in particular
  • A correct measurement is made without contact with the board
  • Diagnostics and control of the system’s operating status
  • Fast measuring speed
  • An efficient pneumatic system ensures that the transmitters are kept clean, reducing maintenance
  • Incorporated database to store the measurement reports, for statistical analysis and graph printouts
  • Numerous graphs available such as: blister position on board, production trend blisters, opening trend, board quality trends
  • Network linking possible with TCP/IP protocol, for Siemens S5/S7 and Allen-Bradley ControlLogix
  • Available in most of the languages commonly spoken around the world today.



  • Repeatability, reliability, comprehensive and accurate measurement
  • Improved production quality
  • On-line visualization of the production process
  • Quick and easy to install
  • Little maintenance required.
Tel +39 059 465500
Download the data sheet for details on the technical features, advantages and scope.