Shrinkage Measurement in a Tenter Frame

Differential length measurement, for material lead and shrinkage

Tentering applications involve driving the right material lead in the feed line to achieve the desired material properties later in the process. For this it is necessary to gain knowledge about the process-related shrinkage of the respective material in the tenter (stenter) frame. The non-contact differential length measurement systems from ELOVIS are used to determine the material-specific shrinkage behavior, as well as later in the process for controlling the material lead. All this can be done with one and the same μSPEED differential measurement system both via the length measurement or via the speed measurement.

Typical application data:

  • Path Velocity: typically up to 60 m / min
  • Measurement accuracy with tactile measuring equipment or via drive: typically 2 – 5%
  • Measurement accuracy with non-contact length measurement μSPEED: typically 0.05%
  • Amortization: 2 months, direct encoder replacement, no other modifications needed

Material examples:

  • textiles, fabrics, knitted fabrics
  • Nonwoven, felt
  • composites with fabrics, foam, nonwoven, felt and foils
  • Laminating materials, laminating materials

Machines equipped with non-contact differential length measurement:

  • tenter frame
  • laminating machines
  • Coating Equipment
  • Labelling Machines

Matching Products and Services

Length & Speed Measurement Systems

  • Non-contact length and speed measurement, optically by laser
  • Length and speed free of slippage, maintenance-free, permanently calibrated and accurately measured
  • The Laser-Encoder replaces tactile measurement via impeller, wheel, measurement roller, or machine drive
  • Measurement of agitated surfaces via laser-doppler surface velocimeter

ELOVIS Services

ELOVIS offers the following services for measuring difference lengths:

  • Advice on difference length and difference speed measurement
  • Measurement & calibration services
  • Help with length complaints of your customers
  • OEM sensor developments in the field of difference length and speed measurement

Always available for you:
Bernd Engelsdorf


Vincenz-Prießnitz-Straße 1
76131 Karlsruhe, Germany

T +49 721 933823-0
F +49 721 933823-23

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