초록 ▼

A package comprising a container provided at its open top with a flange having portions of concave-convex configurations, a lid provided at the edge with a flange having portions of convex-concave configuration elastically interengaged with the concave-convex portion of the flange at the top of the

A package comprising a container provided at its open top with a flange having portions of concave-convex configurations, a lid provided at the edge with a flange having portions of convex-concave configuration elastically interengaged with the concave-convex portion of the flange at the top of the container so as to mechanically lock the lid to the container and said lid being reinforced by a relatively stiff cover board die-cut to fit into the concave side of the flange at the edge of the lid and wherein portions of the flanges are united by sealing and a method of making the same.

대표청구항 ▼

A package comprising a container and lid, a flange at the open top of the container having portions of concavo/convex configuration along at least two sides of the flange defining a groove, a flange at the edge of the lid having portions of convex/concave configuration along at least two sides of th

A package comprising a container and lid, a flange at the open top of the container having portions of concavo/convex configuration along at least two sides of the flange defining a groove, a flange at the edge of the lid having portions of convex/concave configuration along at least two sides of the flange defining a rib elastically engaged with the concave/convex groove at the top of the container, the flanges comprising outwardly horizontal portions defining supporting and supported shoulders, upstanding portions defining containing and contained shoulders and outwardly-extending lips and wherein concave/convex, convex/concave portions are formed in the upstanding shoulders and means associated with the lid for disengaging it from the container.