초록 ▼

A two part plastic container for food products is provided having a main body and a base for being attached to the bottom of the body. The body has a frustoconical sidewall with a radial bottom rim and the base has a shorter frustoconical sidewall with a radial bottom rim. The rims are advantageous

A two part plastic container for food products is provided having a main body and a base for being attached to the bottom of the body. The body has a frustoconical sidewall with a radial bottom rim and the base has a shorter frustoconical sidewall with a radial bottom rim. The rims are advantageous in that they allow stacks of the container bodies and bases to be processed with container feeding equipment presently in use as the rims provide distinct structure for being fed by the mechanical devices of the equipment. An energy director area is provided between the rims for ultrasonically attaching the container body and base. The container body has a smooth sidewall over substantially its entire extent without indentations or bumps for maximizing the printing area thereon. Both the container body and base minimize the size of their respective nest intervals when stacked to conserve space for shipping and processing purposes while still allowing for easy denesting with parts readily separated from the stack due to the provision of the rims. In a preferred form, the inner edges of the stacking shoulders of the bases are outwardly tapered for self-centering when stacked. The lip of the body defining the mouth of the container includes inner and outer annular portions, with the inner annular portion extending upwardly relative to the outer annular portion and terminating in a wedge shape for enhanced sealing.

대표청구항 ▼

[ What is claimed is:] [8.]8. An upper container portion for a plastic container having a hollow interior for receiving food products therein, with the upper container portion comprising, in combination: a sidewall having a top; a lip projecting radially inward from the top of the sidewall to define

[ What is claimed is:] [8.]8. An upper container portion for a plastic container having a hollow interior for receiving food products therein, with the upper container portion comprising, in combination: a sidewall having a top; a lip projecting radially inward from the top of the sidewall to define an opening of the upper container portion, with the lip including an outer annular portion extending from the sidewall, with the outer annular portion having an outer face, with the lip further including an inner annular portion radially inward of the outer annular portion, with the inner annular portion having an outer face and terminating in a free edge, with the outer face of the inner annular portion extending upwardly at a small acute angle to the outer face of the outer annular portion and terminating in an apex, with the free edge extending from the apex towards the sidewall at an obtuse angle relative to the outer face of the outer annular portion, with the free edge and the outer face of the inner annular portion forming a wedge shape having an interconnection between the free edge and the outer face of the inner annular portion, the structure of the lip and the relationship between the inner and outer annular portions being such that when a flexible seal member is installed over the opening and the lip the flexible seal member will be substantially linear from the apex to the top of the side wall.