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WSD 02 - Wet Stretch Dynamics Analyzer

WSD 02 - Wet Stretch Dynamics Analyzer

Determining the Dynamics of Wet Expansion of Paper by means of one-sided Liquid Contact with Adjustable Tension

  • Now with integrated measuring of the humidity (paper and environment), better sample mounting

    • Measurement of the dynamics of the change in dimension of paper by means of one-sided contact with water based liquids under adjustable tension
    • Main applications:
      • Decor paper in contact with:
        • Water
        • Melamine Resin
        • Gravure ink
      • Gypsum board, coating base paper, newsprint paper, offset printing paper, label paper, ink jet-paper, liner board etc. in contact with:
        • Water
        • Fountain solution
        • Ink jet-ink
    • Main user:
      • Paper producer
      • Chemical Supplier
      • Converter of Paper
    • Replacing classical wet expansion methods with two-sided liquid contact
    • Measuring range
      • Wet expansion to a maximum of 27%, measuring duration unlimited
      • Recording the expansion from the moment of liquid contact, displaying the results from approx. 100 ms after initial contact
    • Measuring result
      • Expansion-time diagram
      • Expansion value at a free selectable time point


    • Fast contacting of the paper and liquid, important especially for high absorbent paper
    • Real trial conditions by adjustable tightness
    • Objective measuring method, free of subjective errors
    • High reproducibility of the results: ±0.05% of result
    • Accuracy better than ± 0,1% abs. ± 5% of the analytical value in the area of 0 to 3% stretching
    • Resolution approx. ± 0,013%
    • Easy handling
    • Integrated measurement of paper moistness and humidity, ambient temperature


    • Convenient user interface for measurements
    • Easy to handle in quality assurance


    • Sample dimension: min. 210mm x (60±0.5)mm
    • Dimension: 300 x 280 x 320mm (H x W x D)
    • Weight: 8.5 kg
    • Power supply: 230V, 50Hz / 115V, 60Hz
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