The ornamental design for a papertowelrollcore, as shown and described.
FIG. 1 is a left perspective view of a paper towel roll core according to my new and ornamental design;
FIG. 2 is a right perspective view thereof;
FIG. 3 is a front elevation view thereof, wherein the back elevation, top plan, and bottom plan views are identical to the front elevation view;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a left perspective exploded view thereof;
FIG. 7 is a right perspective exploded view thereof; and,
FIG. 8 is a front elevation exploded view thereof, wherein the back elevation exploded view is a mirror image of the front elevation exploded view, and wherein the top plan and bottom plan exploded views are identical to the front elevation exploded view.
Retention mechanism in a dispenser for retaining an exchangeable roll of material, retention system, dispenser, and method for inserting a roll of material into such a retention mechanism