Schopper Twin Head Folding Endurance Tester

Manufacturers involved in papermaking and security printing use this Schopper Method Twin Folding Endurance Tester to determine the folding strength of high mechanical strength papers up to 0.25mm thick.

It’s especially recommended for security papers, such as those used to produce banknotes, passports, government documents, tamper-evident labels, etc., where there is a direct correlation between the folding endurance and actual strength of the paper.

During the test, two opposed, movable horizontal jaws are used to hold a 15 x 100mm specimen under varying tension during the bending cycle. This helps laboratories and manufacturers working with high-performance and security-grade papers ensure they’re durable enough for their intended end-use and assess how the paper will age over time.

Benefits

Double-head system for simultaneous testing.
Complies with ISO 5626 – TAPPI 423 – SCAN P17.
Folding speed: 115 ± 10 folds/min (Schopper method).
Applicable sample thickness: 0.05 – 0.25 mm.
Spring-applied tension: 7.55 – 9.81 N (1000 g).
Colour touchscreen with full statistics displayed.
Temperature sensor to detect increases in sample temperature.
CE marking.
Compact and robust design (450 × 400 × 455 mm, 35 kg).

Test Description

Two opposed, movable horizontal jaws are used to hold a 15 × 100 mm specimen under varying
tension during the bending cycle.

A sliding grooved sheet moves between 4 bending rollers, folding the paper at 115 ± 10 strokes per
minute.

The spring applied tension is 1000 g (9.81 N).

Once the sample breaks, the results are displayed individually on the touch screen.

Sample thickness: 0.05mm to 0.25mm

Normalised spring force: min 7.55N / Max 9.81N

Test length: 90 mm

Specimen length: 100 mm

Specimen width: 15 mm

Schopper method with speed: 115 ± 10 folds/m

Equipment dimensions: 450mm x 400mm x 455mm (main unit with lid)

Approximate packaging dimensions: 650mm x 600mm x 600mm

Net weight: 35 Kg

Approximate gross weight: 60 Kg

Electrical current: 220V-50Hz or 110V-60Hz

Schopper Twin Head Folding Endurance Tester

Benefits

Test Description

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