Description
Summary:
This Short Span Compression Tester is used to measure the compressive strength of paper and
cardboard samples by the SCT method (0.7mm short distance compression between jaws). The test is performed using a 15 mm wide paper or cardboard specimen and it is compressed until failure occurs.
The Short Span Compression Tester SCM-1 is designed to perform SCT compression tests, it is considered an important property and can be used to predict the performance of corrugated cardboard sheet used in the manufacture of Corrugated cardboard. International standards specify this method for determining the compressive strength both in the machine direction of the fibers and in the transverse direction on paper and cardboar
Standards:
ISO 9895: Paper and board; compressive strength; short span test
DIN 54518: Testing of paper and board; compression strength, short span test
TAPPI T826 – SCAN P46 – UNE 57142 – BS 7325 – AS/NZ 1301.4
ETC…
Main Parameters:
| Sample clamping force | 2300 ± 500 N (Air pressure 0.3-0.45Mpa) |
| Resolution | 0.1N |
| Measuring Range | 1-500N (0.06～33.3 kN/m) |
| Indication accuracy |
Indication error ±1% Indication variability ≤1% |
| Free spacing of sample holder | 0.70 ± 0.05 mm |
| Test speed |
3 ± 1 mm/min (Relative movement speed of two clamps) |
| Sample clamping surface size | Length×Width 30mm × 15mm |
| Air source | Air pressure > 0.4Mpa |
| Display | 7-inch, 800*480 pixel color resistive touch screen |
| Built-in thermal printer | |
| Communication Interface | USB2.0 or RS232 Optional |
| Power Supply | AC 220V 50/60Hz |
Testing Description:
Once the sample is placed between the jaws, they close and the test starts, once it is finished, the detected force value can be read on the display. The value is expressed in kN / m or lb / in.
After performing each test, the pneumatic jaws are separated and the equipment is ready to start a new test. After making a series of measurements (up to 20 according to standards) in each of the two directions of orientation of the fibers in the paper:
MD = Machine Direction (Longitudinal sense)
CD = Cross Direction (Cross direction)
Incorrect or out of range measurements can be removed to avoid statistical errors. The ratio between MD (longitudinal direction of machine) and CD (transverse direction) is shown after completing the two series of tests.
The maximum Compression force of the SCT test is expressed directly in kN / m or lbs / in. The equipment also automatically calculates the Average Values and, if the optional software is available, it also allows obtaining the Maximum and Minimum values, both in the MD (Longitudinal Direction) and in the CD (Transverse Direction).
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