internal bond tester / paper and cardboard
TAPPI T 569 | 80-20 Testing Machines Inc



  • Test type:

    internal bond

  • Tested product:

    paper and cardboard


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.

Newsprint, Fine Paper, Liner Board, Book Stock, Carton Board, Medium, Coatings, Laminates

* 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

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