Valve Disk For A Spray Can

Abstract

A valve disk for a spray can, having a disk dome for receiving a spray valve and a concentric collar which is molded on while forming a surrounding ring groove and in which collar an elastic sealing ring is held in a form-locking manner. An outer edge bounding the ring groove is bent over at least partially in a surrounding manner in the direction of the ring groove while forming a supporting surface for the sealing ring.

1 . A valve disk for a spray can comprising:
 a disk dome for receiving a spray valve;   a concentric collar including a surrounding ring groove;   an elastic sealing ring held in a form-locking manner in the collar; and   an outer edge bounding the ring groove being bent over at least partially in a surrounding manner in the direction of the ring groove while forming a supporting surface for the sealing ring.   
   
   
       2 . The valve disk according to  claim 1 ,
 wherein the sealing ring rests against the supporting surface under tension.   
   
   
       3 . The valve disk according to  claim 1 , wherein the supporting surface extends at a right angle with respect to the outer edge which extends parallel to the longitudinal center axis of the valve disk. 
   
   
       4 . The valve disk according to  claim 1 , wherein the supporting surface has a smaller thickness than the thickness of the remaining outer edge. 
   
   
       5 . The valve disk according to  claim 1 , wherein the supporting surface is constructed as an impressed edge. 
   
   
       6 . The valve disk according to  claim 1 , wherein the supporting surface extends at an acute angle with respect to the longitudinal center axis of the valve disk. 
   
   
       7 . The valve disk according to  claim 1 , wherein the supporting surface is constructed at an acute angle and is almost completely formed by the outer edge. 
   
   
       8 . The valve disk according to  claim 1 , wherein the supporting surface is provided in a surrounding manner with a plurality of gaps in which material of the sealing ring ( 7 ) is disposed. 
   
   
       9 . The valve disk according to  claim 8 , wherein the gaps have a serrated construction. 
   
   
       10 . The valve disk according to  claim 1 , wherein a top side of the collar is provided with an at least partially surrounding locking bead, which protrudes into the ring groove. 
   
   
       11 . The valve disk according to  claim 1 , wherein on its side opposite the outer edge, the collar is provided with one of a surrounding locking bead and several locking beads which are distributed over the circumference, form cams and bulge in the direction of the ring groove.