Patent ID: 7178550

Claim:
A two-component pressure control valve ( 10 ) for a packaging container having at least one opening ( 63 ) in a wall of the packaging container, comprising a cup-shaped, rigid supporting body ( 11 ), having a circumferential edge region ( 15 ) including a top surface ( 31 ) which can be attached to a material web ( 2 ) forming the inside ( 1 ) of the packaging container, and a ( 17 ) portion having at least one opening ( 13 ) for gas, and a valve membrane ( 12 ), closing the at least one opening ( 13 ) in the supporting body ( 11 ) with the interposition of a sealing fluid ( 26 ), up until a certain excess pressure in the packaging container and which, when the excess pressure is exceeded, forms a conduit inside the edge region ( 15 ) for gas flowing outward of the packaging container through the at least one opening ( 63 ) in the wall of the packaging container the membrane ( 12 ) being attached to the supporting body ( 11 ) in captive fashion, wherein the membrane ( 12 ) is attached to the supporting body ( 11 ) by means of glue in at least two opposing edge regions between which the at least one opening ( 13 ) in the supporting body is disposed; the membrane ( 12 ) being attached to the supporting body ( 11 ) with a space ( 29 ) formed between the a top surface ( 28 ) of the membrane ( 12 ) and the top surface of the edge region ( 15 ) of the supporting body ( 11 ), the space ( 29 ) permitting the gas to travel out toward the at least one opening ( 63 ) in the wall of the packaging container, wherein the supporting body ( 11 ) is embodied as a rotationally symmetrical flat body, wherein the membrane ( 12 ) is round and has a diameter that corresponds to the inner diameter of the edge region ( 15 ), and wherein at least one opening ( 25 ) for the gas is provided in the membrane ( 12 ), and wherein the membrane ( 12 ) includes a central, preferably circular region ( 18 ) covering over the at least one opening ( 13 ) in the supporting body ( 11 ), wherein membrane-free incisions that constitute the at least one opening ( 25 ) extend inward from the circumference of the membrane ( 12 ), and wherein between the incisions, approximately radially disposed membrane sections ( 21 ) are provided, which are at least partially glued to the supporting body ( 11 ).