ASTM D3522 Standard Test Method for Applied Coating Wax and Impregnating (Saturating) Wax in Corrugated Board Facing
6. Apparatus
6.1 Sample-Trimming Equipment - A suitable trimming board or template arrangement equipped with a razor edge knife for even cutting of specimens to required size, with parallel sides. (A guillotine-type paper cutter is not recommended.)
6.2 Measuring Rule, steel edged, for measuring the size of specimen to within 0.5 mm.
6.3 Beakers, 1000-ml, Griffin type.
6.4 Steel Screen, 325-mesh, approximately 150 mm in diameter, to fit into funnel.
6.5 Glass Funnel, approximately 100 mm in diameter.
6.6 Watch Glasses.
6.7 Steam Bath or Hot Plate in hood.
6.8 Hot Plate.
7. Reagents and Materials
7.1 Solvent, chlorinated hydrocarbon, 1,1,1-trichloroethane (Warning - see Note 4). The solvent used should be residue-free, and should be checked for residue upon evaporation before using.
NOTE 4 - Warning: May cause irritation.
8. Sampling and Test Specimens
8.1 From each test unit, obtained in accordance with Practice D585, that is, each finished carton blank or paperboard sheet, cut representative specimens that are free of obvious defects. Each specimen should measure 100 by 100 mm, cut to the nearest 0.5 mm. Record the area of the surface to be tested, and whether it is an inside or outside facing. Duplicate specimens are required from each sample unit.
NOTE 5 - The operator may be required to increase the replication and treatment of specimens to obtain a better estimate of "average" wax loading (1) if the waxing is at an extremely low loading level, or (2) if the wax loading shows obvious wide variations in distribution over the board area.
NOTE 6 - Optionally, specimens of other dimensions may be used if required by sampling limitations. In such cases, calculations need to be appropriately adjusted.
8.2 Condition all boards at 23°C (73°F) and 50 % relative humidity for a minimum of 48 h before beginning test procedure.
