AS NZS 1301.407:2017 pdf free

AS NZS 1301.407:2017 pdf free.Methods of test for pulp and paper
Cutting device, consisting of a die cutter, capable of accurately cutting the test pieces to the specified dimensions with clean, sharp, parallel and straight edges. Other cutting devices, such as a double-knife cutter,may be used provided they can be shown to give similar test results.Test-piece holder (see Figure 1), consisting of a base block (item 1 in Figure 1), preferably cylindrical,having a cylindrical recession which, together with a removable central disc (item 3 in Figure 1), forms an annular groove (item 5 in Figure 1).
The recession shall have an inside diameter of 49,30 mm±0,05 mm and be 6,35 mm±0,25 mm deep with its bottom parallel to the base of the block to within 0,01 mm. The disc (item 3 in Figure 1) is 6,35 mm±0,25 mm thick. To accommodate test pieces of various thicknesses, discs of various diameters shall be provided, so that the width of the groove (item 5 in Figure 1) formed between the edge of the disc and the wall of the cylindrical recess may be adjusted to be at least 150 %，but not more than 175 %, of the calliper of the test piece being tested. Suitable disc diameters are given in Table 1.
A centring pin (item 4 in Figure 1) is fixed in the exact centre of the cylindrical recess. The pin can be recessed from the base of the block but shall not protrude from the bottom. Each disc shall have a hole of slightly larger diameter at its exact centre to accommodate the pin, which will then correctly centralize the disc and provide a uniform annular groove.
Unless otherwise specified, cut at least ten test pieces in each of the required directions. Test pieces with the long dimension perpendicular to the machine direction are used to test the machine-direction crush resistance. Those with the long dimension parallel to the machine direction are used to test the cross-direction crush resistance.
For two-sided specimens in which the fibre compositions of the two sides are different and where the side which will be on the outside of the container can be identified, cut the required number of test pieces with the outside towards the male die, or away from the blades if a double-knife cutter is used. These types of cutters tend to generate small protrusions or a slight curl of the cut edges which, if oriented toward the centre of the ring, can tend to lift the centre disc, causing erroneous readings.AS NZS 1301.407 pdf free download.