The ornamental design for a syntheticresinpaper, as shown and described.
FIG. 1 is a front view of a synthetic resin paper.
FIG. 2 is a duplicate view of FIG. 1 showing where the details are taken.
FIG. 3 is a partially enlarged front view of the synthetic resin paper of FIG. 1; and,
FIG. 4 is another partially enlarged front view of the synthetic resin paper of FIG. 1.
The ornamental design for the synthetic resin paper has no substantial thickness. A bottom view is omitted since the bottom is flat and devoid of surface ornamentation. The broken lines represent boundaries and form no part of the claimed design.