TMI 80-20 Internal Bond Tester

Product Ref: TMI 80-20

The Internal Bond Tester is designed to determine the internal bond strength of a variety of Paper and Board materials according to TAPPI T 569.


The Internal Bond Tester is designed to determine the internal bond strength of a variety of Paper and Board materials according to TAPPI T 569. The instrument design is based on a falling pendulum which creates a high speed impact on a paper specimen. The paper specimen is sandwiched between two double-coated tape substrates. The pendulum impact measures the total energy required to delaminate the internal fibers of a specimen in a "Z" type direction into two separate piles. The system also incorporates an automatic sample preparation station which allows five specimens to be accurately prepared simultaneously.

The Prep Station requires a filtered air supply meeting IG4 Industrial Grade Air: ISO Class 1-4-1

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TAPPI T 569 om 07


Corrugated Testing, Paper and Tissue Testing


Consumer Products, Corrugated and Board, Other, Plastics and Resins


Internal Bond, Strength


  • Storage and editing of up to 500 readings
  • Selectable units (², J/m² and kg•cm)
  • RS-232 serial output
  • Report printout with built-in printer
  • Magnetic hammer release and magnetic brake
  • Automatic calibration
  • Automatic specimen hold-down during test sequence
  • Settable limits, statistics-average, standard deviation, high/low results
  • Automatic cutting of samples saves you time and keeps you safe
  • 5.7 inch LCD color display with 320 x 240 resolution
  • 15 Character alphanumeric keypad
  • 6 function keys for easy test setup
  • 10 soft key icons allow simple intuitive navigation of test functions
  • Conforms to TAPPI standard T 569

Sample Prep Station

80-20 Internal Bond Tester Prep Station photo

A precision sample Preparation station with digital display and direct read out in kPa and psi units is available to prepare up to 5 test pieces at the same time. The Sample Prep Station is supplied to provide a consistent adhesive transfer when pressing the test specimen between the double-sided tape and aluminum platens.

Included with the Sample Prep Station are 5 aluminum platens with a sample size of 25.4 x 25.4 mm (1.0 x 1.0 inches). The clamping pressure is adjustable from 345 kPa (50 psi) to 1379 kPa (200 psi). During the pressing operation a selectable dwell time can be set by the operator from 0-4 seconds. The factory setting is 3 seconds in accordance with TAPPI T 569. The system is designed with a reinforced anvil to prevent deflection during sample preparation.

Prep Station Specifications

  • Pneumatic clamping force: 50-200 psi
  • Dwell time: 1 to 4 seconds
  • Sample Press Timer: user adjustable 1-4 seconds
  • 5 Aluminum platens: sample size of 25.4 x 25.4 mm (1.0 x 1.0 inches)
  • Sample thickness range: up to 1.25 mm (0.050 inches)
  • Clamping pressure adjustment: 345 kPa (50 psi) to 1379 kPa (200 psi)
  • Clamping pressure resolution: 7 Kpa (1 psi)
  • Clamping pressure control: at 690 kPa (100psi) is better than ± 21 kPa (7 psi)
    at 1034 kPa (150psi) is better than ± 34 kPa (5 psi)
  • Air requirements: filtered air supply meeting IG4 Industrial Grade Air: ISO Class 1-4-1

Prep Stations Size

  Depth:   10.5 in (26.7 cm)
  Height:   14.6 in (37.1 cm)
  Width:   13.2 in (33.5 cm)
  Weight   50 lb (22.7 kg)
80-20 Internal Bond Tester Prep Station photo

Software Program

  • Screen display
  • Provides a web-like page navigation menu driven user interface.
  • Normal Mode
  • Calibration mode

Instrument Specifications

  • Ranges: 0 -1050 J/m² (0 - 500 x 10-3 ), 0 - 1575J/m² (0 - 750 x 10-3 ) and 0 - 2100 J/m² (0 - 1000 x 10-3 )
  • Pendulum Release: Magnetic
  • Peak/Angular Resolution: 0.04°
  • Standard: ½² pendulum standard, ¾² and 1² available for stronger materials.
  • Options: ¼² and other weights also available
  • Results directly in:², J/m²,
  • Statistics: Average, Standard Deviation, Minimum, Maximum and Calibrate function

Instrument Size

  Depth:   15.7 in (40 cm)
  Height:   23.7 in (60.3 cm)
  Width:   21 in (53.3 cm)
  Weight   51 lb (23 kg)


Air: Instrument quality 700 kPa

Electrical: 90-264 VAC 50/60 Hz

Ordering Information

Catalog Number: 80-20-00-0001