Company Erhardt Leimer Corrugated concentrates their activity on the rationalization and optimization of the process of the production of cardboard by installing components which ensure increasing the productivity of corrugators and improvement in the quality of produced cardboard.

Systems of the Company Erhhardt - Leimer Corrugated ensure the guiding web of cardboard during the entire process of production - from unwinding to final sheets.

The product line reaches:

  • Automatic web guiding,
  • Control systems for the optimization of the web tension,
  • Automatic parameter setting of all important production parameters.

Main products of E+L are:

1. Products on Single Facer group

1.1 ELCORR - compensating roller ensures the same web tension on the operating and drive side.

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For an optimum flatness of sheets a constant distribution of temperature and moisture over whole web width is necessary. The Elcorr compensating rollers provide homogeneous heat transfer at all pre-heaters and uniform glue application at the glue units. Through this a constantly high quality of corrugated board is quaranteed.

Distribution of temperature on web width with and without Elcorr roll.

a) Fixed roll (Elcorr roll not working)

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b) Working Elcorr compensating roller.

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1.2 ELTRAC - guides the linnet web exactly to the center line of single facer

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The Eltrac system provides an exact guiding of the flute and liner into the single facer. By guiding the webs to each other an optimal lamination is achieved, which allows a best possible utilization of the paper width.

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2. Products in Bridge

2.1 CORRALIGNER - system provides the guiding of single web after unwinding on the bridge

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According to experience the use of mechanical edge guides causes damage of the web edges and web breaks, especially during width changes.

The CorrAligner system guides the webs without mechanical contact to the edge through usage of Non-Crash-Rolls and so avoids web breaks with cost-intensive downtimes.

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2.2 TENSIONMASTER - system provides the individual web tension control of the single faced boards on the bridge

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Constant quality of the corrugated sheets is impossible without constant web tension. The TensionMaster system measures the web tension at the runout of the bridge, compares the results with the desired values and readjusts the web tensions automatically and continuous. This makes the premise for a constant heat transfer on the single webs in the pre-heaters.

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3. Products in Dry-End

3.1 TRIMMASTER - system stabilizes the web before the trim and positions the slitter scorer relative to the web

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In lots of cases the E+L TrimMaster allows a reduction of the edge trim to a minimum. Pre-print webs need exact guiding of the slitter scorer in relation to the printed images. The TrimMaster system scans the web with high resolution CCD cameras and ensures the required precision of alignment.

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