The ornamental design for the plastic handle for container, as shown and described.
FIG. 1 is a perspective view of the plastic handle for container engaged with a container, with the container shown in phantom to underscore that the container does not form part of the claimed design;
FIG. 2 is a perspective view of the plastic handle for container;
FIG. 3 is a top plan view of the plastic handle for container;
FIG. 4 is a bottom plan view of the plastic handle for container;
FIG. 5 is a side elevational view of the plastic handle for container, with sides of the handle being symmetric;
FIG. 6 is an end view of the plastic handle for container, with ends of the handle being symmetric.
FIG. 7 is a perspective view of an alternate plastic handle for container;
FIG. 8 is a top plan view of the plastic handle for container shown in FIG. 7;
FIG. 9 is a bottom plan view of the plastic handle for container shown in FIG. 7;
FIG. 10 is a side elevational view of the plastic handle for container shown in FIG. 7, with sides of the handle being symmetric; and,
FIG. 11 is an end view of the plastic handle for container shown in FIG. 7, with ends of the handle being symmetric.
The container does not form part of the claimed invention.