Drinking cup made of foldable flat material

摘要

The invention relates to a cup made of foldable flat material with at least one desired fold line (22) along which a convex cup wall (24) can be pushed in to give a concave, dimensionally-stable form.

主权项

1. A cup for drinking a liquid, the cup comprising:
an open top having a drinking edge extending around its periphery; a standing edge at the bottom of the cup; and at least one convex cup wall comprising at least one predefined gripping recess defined by at least one desired fold line which runs as a closed curve, a U-shape, or as a pair of curved lines in the cup wall, wherein the gripping surface is structurally configured to move from an initial convex position to a stable concave position upon application of finger pressure, and the concave position provides structural reinforcement to the cup wall.