Patent ID: 8074847

Claim:
An internally pressurized package for dispensing a material therefrom, said package having a major axis defining an axial direction, said package comprising: a container for containing a material and having a plastic neck, said neck having a round cross section with a radius; a discharge for dispensing material from said package through a valve, said discharge comprising an opening and a plastic valve cup disposed in said opening intermediate said container and said valve, said valve cup being joined to said container in fluid tight or vapor tight relationship at said neck over a joining length, wherein one of said valve cup and said neck has a channel, said channel having two walls generally parallel to the axial direction and defining an annular channel therebetween, and the other of said valve cup and said neck having at least a portion thereof axially received in said annular channel, said joining length being taken generally along the major dimension of said neck as the overlap in the axial direction between said portion and said channel, whereby said joining length divided by said radius defines a ratio of at least 1.