Pack of a foldable material, more particularly a cigarette pack

Claim 1

A flip-top cigarette box including a rear wall (11) having inner side flaps (14) hinged thereto, a front wall (10) having outer side flaps (15) hinged thereto, and a U-shaped insert collar having a front face (16) and side walls (17) hinged thereto, the insert collar adapted to fit within the box in a predetermined position with the front face adjacent the inner surface of the front wall and the side walls adjacent the inner surfaces of the inner side flaps, characterized by: a. the length of the insert collar being less than the depth of the box, b. a preformed, substantially rigid, outwardly directed stud-like projection (19) on the outer face of each side wall, c. an aperture (18) in each inner side flap shaped and configured to closely mate with a projection when the insert collar is in said predetermined position within the box, whereby the projection is received by and extends into the aperture, and d. adhesive (22) means securing the inner surface of each outer side flap to a projection, whereby the insert collar is securely fixed and retained in said predetermined position.