Flat blank for making visor, has intermediate part between visor and head band parts provided with curved fold line having two different radii of curvature

摘要

The curved fold (11) between the visor part (2) and the segment-shaped intermediate part (3) between the visor part and head band part (1) follows a symmetrical curve. The two ends of the curve has a relatively small radius of curvature and the middle region of the curve has a relatively large radius of curvature. The head band part comprises a strip (4) with two ends (5, 6) which can be fixed together around the head. The intermediate part is joined to one length edge of the strip and a part covering the top side of the head can optionally be joined to the other length edge. A straight fold line (10) extends between the strip and intermediate part.