Container

A container formed from a sheet material, said container comprising a unitary structure of said sheet material, said container further comprising:

• peripheral flange defining an opening;
• a downwardly and inwardly tapering hollow body defined around a longitudinal axis by a generally annular sidewall extending downwardly from said flange;
• a bottom wall comprising:
• (1) an annular, curved, peripheral base extending from a lower end of said body sidewall, said base constructed to engage a flat support surface along a generally circular line of contact;
• (2) an annular first end wall extending from said annular curved, peripheral base both inwardly and toward said opening defined by said flange;
• (3) an annular second end wall located closer to said opening than said first end wall and extending from said first end wall both inwardly and toward said opening defined by said flange;
• and (4) a central, third end wall located closer to said opening defined by said flange than said second end wall and extending from said second end wall.

A container formed from a thermoplastic sheet material, said container comprising a unitary structure of said sheet material, said container further comprising:

• a peripheral flange defining an opening;
• a downwardly and inwardly tapering hollow body defined around a longitudinal axis by a sidewall extending downwardly from said flange;
• and
• a bottom defined by (1) an annular, peripheral base extending from a lower end of said body sidewall, and (2) an end wall structure that extends radially inwardly from said peripheral base and that is located closer to said opening than is said peripheral base.