The ornamental design for a tamponcapsule, as shown and described.
FIG. 1 is an isometric view of a tampon capsule;
FIG. 2 is a front side view thereof; a back side view being a mirror image of front side view;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is an exploded view thereof showing the tampon capsule in an open position; and,
FIG. 6 is another exploded view thereof showing the tampon capsule in an open position.
The broken lines shown in FIG. 4 illustrate portions of the tampon capsule that form no part of the claimed design. The broken lines shown in FIG. 5 illustrate environment and form no part of the claimed design.