Specimen Preparation
Specimen preparation is critical to obtaining good results.The factors that effect creating a good specimen are, clean cuts perpendicular to the specimen, parallelism, service life of cutters, and speed. Zwick Roell has partners that specialize in manufacturing high quality cutting units.
Examples for instruments used for specimen preparation (see photo on the right):
- Circular cutter for FCT specimen
- Strip cutter
- Saw for ECT specimen
- Fluter
Determination of the Basis Weight
Selection criteria are: accuracy and resolution of the balance and the electronic transfer of the weight to a computer. In order to balance feature and price requirements, Zwick Roell and its partners offer a range of precision balances from highly accurate analytical balances to balances with a limited range.
Paper thickness is measured for various reasons:
The stiffness of paper and carton are dependent on the thickness. Therefore, an exact thickness measurement is critical in the stiffness of a carton and processability in a packing or printing machine. If the weight per unit area and thickness of a paper is known, the weight-referenced volume can be calculated. This is important for the transportation of larger amounts as well as for the processing of these materials.
Digital thickness measuring instruments, which work correctly to Standards and pass their values on to subsequent systems, save time and ensure secure data.
The advantages:
- Pressure foot area, loading weight and lowering speed are available for all normal standards.
- Individual and series measurements are possible.
- PC-connection via built in RS 232 interface.
