Barrier Layer Measurement

This non-contact thickness measuring device is for film and sheet up to a total thickness of 3 mm. 

It is equipped with dual technology to measure total thicknesss and also the individual barrier layer thickness (example, EVOH, BVOH, Nylon).


Multi layer plastic films and sheet for food packaging.

Barrier Film/Sheet (Layer Measurement)

← 8 m →

XRS thickness gauges are available in widths of up to 8 m

≤ 0,2 μm

Ultra-precise thickness measuring with an accuracy of ≤ 0,2 µm

Measuring Principle

KAPA (for total thickness)

It is based on a non-contact, indirect thickness measurement principle. The capacitance between sensor and roller depends on dielectric of measured sheet and distance between sensor to roller. To eliminate the influence of distance-fluctuations between sensor to roller this distance is measured permanently with an eddy current sensor (located together with capacitive sensor in the same casing). According to this measured distance the result of capacitive sensor is corrected.

IR (for the EVOH layer)

It is based on a non-contact, transmission measurement principle. For the determination of the EVOH layer thickness, a wide infrared spectrum of the plastic is recorded and the resulting absorption of the EVOH polymer molecules is evaluated by using our modern analytic methods.

Technical Specifications

Technical Data KAPA IR
Measuring System Capacitive/eddy current Infrared
Thickness range Up to 3 mm > 5 µm*
Measuring gap 4.4 mm 35 mm
Sensor resolution ≤ 0.1 µm 0.5 µm
Repeatability ≤ ± 0.5 µm ≤ 2 µm*
Measurement speed 10-300 mm/s adjustable 25 mm/s adjustable
Calibration necessary for each material

* Depending on product and calibration.

Please download the PDF data sheet for detailed technical specifications! 

XRS in Action

Contact our Experts

Our experts are always available for your inquiries and technical consultation. Please contact us anytime at our HQ or refer to local SBI Mechatronik  representatives in your country!

Johannes Scherleitner

Sales Director

Johannes will develop a fitting solution for your requirements based on our products and services. 


tel. +43 (0) 2952 50701

Roman Geist

Head of Engineering

Roman is your expert for technical questions, application development and custom solutions.


tel. +43 (0) 2952 50701 

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