Paper - Type bendtsen

Article Index

 

TYPE BENDTSEN MANUAL

code N3500
ISO 5636/3, 8791/2,  TAPPI UM535, SCAN P21, P60

Roughness was estimated by measuring the leakage of air under a metal land pressed against the test paper at a predetermined pressure. The pressure of air supply was regulated at one of three available pressures.

Air permeance was measured by securely clamping the test piece between a metal land and a rubber gasket to give an accurately known test area, usually 10 cm², and measuring the airflow through this area at one of the three available pressures.

The Bendtsen method has gained widespread. The apparatus made by Noviprofibre is strictly conform to international Standards 8791.2 "Determination of the Bendtsen roughness of paper and board" and to international Standards 5636.3 "Method for determination of air permeance using apparatus type Bendtsen".

 

 

TYPE BENDTSEN ELECTRONIC

code 172218/219/220
ISO 5636/3, 8791/2, TAPPI UM535, SCAN P21, P60

FOR MEASURING THE ROUGHNESS AND THE AIR PERMEANCE OF PAPER AND BOARD ACCORDING TO THE BENDTSEN METHOD 

  • Available with 1, 2 
  • Measuring range : 25 to 5000 ml/min, other measuring ranges available e.g. 1 to 5000 ml/min
  • Simultaneous measuring with all 4 heads
  • Fully automatic measuring cycle, no manual contact with the sample

DESCRIPTION

Resilient and stable unit with built-in industrial PC and touch-screen monitor.
Available with up to 3 heads.
Monitor to display individual and statistic values.
Quick and fully automatic measuring.
Easy comprehensible menu-guide.


TEST DESCRIPTION

Roughness :
The sample is placed underneath the head. By pressing the "Start“ button the head is lowered onto the sample and presses it only with its own weight.
The measuring starts. As soon as the adjusted perculation (e.g. 1,47 ml/min) is stable (adjustable 1 to 40 sec) the measured value is displayed on the monitor in ml/min.
The measuring typically takes 10 sec (the stability of the perculation can be adjusted up to 40 sec, then the measuring takes longer)
After measuring the sample is released and the head moves back into initial position.

Air permeance:
The sample is placed between the upper an lower part of the head and stream with an adjusted air preasure (e.g. 1,47 kPa).
When the perculation is stable (adjustable from 1 to 40 sec) the measured value is displayed on the monitor in ml/min or µm/Pa.sec.
Displaying the values in Gurley sec. is standard. 

  

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