Specimen preparationCustomer specific tests

Zwick-Item-NoStrip cutter Determination ofProportionality Load F
prop 15 mm widthW070500.00.00 25 mm widthW070510.00.00 50 mm widthW070520.00.00 15 & 25 mm widthW070530.00.00 During the storage of packedgoods, the packaging is subject to load variations in stacking and removal operations. They are also subject to static force changes created in transport. Therefore, testing is performed so that packaging can be manufactured that can withstand long term elastic form changes. The limit of the elastic deformation (Proportionality Load) is measured as follows:•the maximum slope on the force-deformation curve is determined•from the maximum, a slopedeclination of x % is defined in the direction of the tests end•the load found here is theapplicable Proportionality Load F Customer specific tests The area of paper materials doesnot begin with paper manufacturing and does not end at the processor for Zwick. Suppliers and endusers also profit from Zwick/Roell solutions. A partial list of potential canidates for this equipment would be, suppliers who must test their chemicals on finished paper, printers who must optimise the stiffness values of bindings, large packaging customers. Our customized tests could enhance your quality control: Circular cutter diam. 112,8 mm W070560.00.00 Specimen preparation diam. 79,8 mmW070570.00.00 ECT-industrial saw W070600.00.00 Specimen preparation is criticalto 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. Figures 52 to 55 show a segment of the instruments used for specimen preparation. Medium fluter W070600.00.00 Other on request instrumentsfor specimen preparation
prop (Fig. 56). Dimension measurement Boxes for consumer goods arefilled and closed by automatic systems, and they are often sold from automatic machines. Size accuracy is an important characteristic so that these automatic operations are performed without hindrance.
Force Deformation Stiffness maximum stiffness (Modulus) = 100 % F prop stifness decrease of x-%after the max. stiffness:F prop Fig. 55: FluterBild 54: Strip cutter Fig. 52: Circular cutter for FCT specimenFig. 53: Saw for ECT specimen Fig. 56: Measuring the proportionality load 27