Test Tools for Paper and Cardboard

Applications: 

Determine the processability of paper via the internal bond test (z-direction tensile test). In this test to TAPPI T 541 or ISO 15754, the internal fiber bond strength of paper or multi-ply paperboard is determined. We ensure absolute parallelism and transverse stiffness in the fixture, enabling reliable test results in accordance with the standard.

• Determination of inter-fiber bond strength of paper in the sheet plane.
• Determination of ply adhesion in the sheet plane of paper or paper-like laminates.

Function description: 

• Tensile tests at the sheet level allow for the determination of the fiber composite behavior of paper, and the adhesion between layers of multi-layer materials. The test device complies with TAPPI T541 om-99. Tensile tests at the sheet level require a high level of parallelism of the compression platens and secure fastening of the specimen on the specimen carrier. Both criteria are met with the test device for Z-tensile tests. Traverse-bracing and precision-controlled frames allow for a high parallelism of the compression platens. Precision roller guidance for the specimen carriers prevents the need to make adjustments and eliminates excess. The testing fixture allows for the application of a strip of about 150 mm in length for a single operation. Then, when specimen carriers and adhesive tape carriers are pushed in a crisscross movement, five specimens can be tested without having to perform additional specimen preparations.
• In order to carry out a tensile test at the sheet level, a specimen is taped with an area of 1" x 1" (25.4 mm x 25.4 mm) between two specimen carriers. Double-sided tape is used. During the test, the specimen and the tape are pressed together and then separated. For this reason, the adhesive strength of the tape must be considerably more than the force required to separate the fiber composite. The primary measurements are the maximum force and the separation energy at maximum force.

Advantages:

• Specimen carriers arranged at 90° to each other enable five individual specimens to be tested in succession with a single application.
• A leveling element plus high transverse stiffness of the fixture guarantee precise, repeatable test results.
• Through easy, convenient handling the test practically runs itself.

Save time:

• Test five individual specimens in succession with a single application
• Pressing on specimen plus tensile test, in one operation.
• Optional specimen preparation station makes specimen preparation child's play.