Dennison standard paper testing waxes are designed for use by paper and coated paper manufacturers, printers, lithographers, and other concerned with the development, inspection and control of paper for coating and printing purposes.
The use of these waxes I described by the Technical association of the pulp & paper industry in relation to the surface strength measurement of paper products. Method T456-SU-65 published by the Association gives their latest approved method for this measurement. The use of these waxes is also described by the American society for testing and Materials in their method D2482-66T.
The wax test is applicable to coated and uncoated papers and is formulated to evaluate the surface strength of paper or its resistance to picking. This test may be conducted to determine the degree of sizing in the coating in relation to the required press conditions, to estimate the ease with which a coating may be removed or “picked’ from the bodystock, and the tendency of the bodystock to split or the printing process. It is used in a similar manner for evaluating uncoated papers and other surfaces.
The series of waxes have graded adhesive powers. They run from 2A, which has the least adhesive strength, and increase by small graduated amounts to 23A which has the greatest adhesive strength. Hence there is an increase in the degree of adhesion to surface fibres or coating coincidental with the increase in wax numbers.
The complete series consists of 18 waxes, Nos. 2A, 3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A, 11A, 12A, 13A, 14A, 16A, 18A, 20A, 23A, and is available as a set in a cabinet, with an alcohol lamp, instructions, and accessories.