1 0 to about 15 preferably 1 0 to 5 0 all by weight may be employed the following examples further illustrate the best mode contemplated by the inventor for the practice of his invention prepare tmp of 600 to 700 canadian standard freeness csf from southern pine chips and asplund pulp of about the same csf from southern hardwood chips in the tmp preparation pre steam at 30 psig approx 127 u00b0 c and in the asplund preparation pre steam at 100 psig approx 166 u00b0 c after refining requiring about 30 horsepowerdays hpd per air dry ton adt of pulp for tmp and about 13 hpd adt for asplund pulp blend 60 g of the tmp and 40 g of the asplund pulp and treat with water at 85 u00b0 c at 40 consistency ph 5 5 for 20 minutes centrifuge and fluff the pulp so treated to about 40 consistency treat with oxygen gas containing ozone at about 40 u00b0 c providing for about 5 by weight ozone consumption then form a sheet from the ozonated pulp in standard fashion after dewatering of the sheet to about 40 to 50 consistency press dry at 300 u00b0 f 300 psi for 15 seconds to 10 or under.