Patent ID: 8470230

Claim:
A method for forming a container and cap assembly, comprising: forming, in a mold, a container body defining a cavity and having a closed end, an open end, an annular lip at the open end and a single recess formed in the lip of the container, the recess defining an annular inner lip and an annular outer lip at the open end; forming, in the mold, a cap integrally connected to container body, the cap having a top wall, an annular skirt wall depending from the top wall, an annular first sealing flange depending from the top wall of the cap and being disposed radially inwardly from the skirt wall of the cap, and an annular second sealing flange depending from the top wall of the cap and being disposed radially inwardly from the first sealing flange; and closing the cap over the open end of the container body at the mold wherein: (i) the first sealing flange is received within the recess formed in the lip of the container and forms a gap within the recess along a lateral surface of the first sealing flange at a juncture of the first sealing flange with the top wall of the cap; (ii) the top wall of the cap extends entirely over the recess; (iii) the second sealing flange is received within the cavity defined by the container body adjacent the inner lip to generally form a seal with an inner surface of the inner lip; and (iv) the skirt wall of the cap generally forms a seal with an outer surface of the outer lip.