thereto in a manner known in the art such as by pressing into or through the core it is presently preferred that the scarfing teeth 22 be distributed at an average density of at least about eight teeth per square inch and no more than about 30 teeth per square inch typically this tooth density would be about 12 teeth per square inch the contouring roll 30 should generally be cylindrically shaped with one or more areas of smoothly increased radius and positioned beneath the web 10 such that the web 10 is contoured by the contouring roll 30 in the direction of motion of the web 10 the contouring roll 30 may be positioned such that during a part of its rotation there is no contact with the web 10 or the belt 12 it is presently preferred that the contouring roll has a diameter in the range of from about 5 to about 10 inches the contouring roll 30 will generally rotate at the rate of one revolution per batt formed thus when a knife 52 and anvil 54 arrangement is provided as shown by means of example in fig2 a mechanical linkage 60 such as gears shafts and or sprockets and chains or belts synchronizes the rotation of the.