| 摘要 |
FIELD: tobacco industry. ^ SUBSTANCE: cigarette pack contains boxed-like part and a top hingedly connected to the pack back wall. There is a cup-type seal in boxed-like part. It has front wall and side flaps. Seal protuberance is covered with top when closed. Seal front wall has cross braces for scarf limitation. There is an inner flap on the inner side of front wall which at least on one side has scarf for moving in cross brace of front wall seal so cross brace connecter surface goes into an area between top inner flap and top front wall. Relative scarf position is chosen so that cross brace gripping between top inner flap and top front wall starts at seal maximum marginal pressure. Marginal pressure determines by seating of front wall and top inner flap to the upper core of seal front wall during top closing movement. Maximal side pressure is performed at a time when imaginary through-the-flow-line or crossflow plane namely bearing surface which goes between seal front wall core and top hinge or respectively between line hinge between and box-like part is namely positioned regarding top end wall. ^ EFFECT: reliable pack closure at repeated opening. ^ 6 cl, 10 dwg |
