Patent ID: 11866223
Assignee: ALTO PACKAGING LIMITED
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A thermoformed open mouthed container for perishable goods having a profiled upper periphery about the mouth comprising:
a base,
a peripheral sidewall extending generally upwards from said base,
wherein said profiled upper periphery comprises:
a rim region substantially straight in cross section and extending outwardly and downwardly from said peripheral sidewall, and
a rolled rim region extending from an outer edge of said rim region and rolling inwardly towards said peripheral sidewall, and
a counter roll region extending from an edge of said rolled rim, and extending outwardly away from said peripheral sidewall, and defining a cutting zone, and

wherein said container is trimmed from a thermoformed preform, while said pre-form is in a stretched state, and
wherein in said stretched state, said trimming occurs at said cutting zone and said cutting zone is presented substantially perpendicular to a trimming direction, thereby forming a perpendicular cut edge when cut, and
wherein said cut edge is located inboard of an outermost extent of said rolled rim region when said container is in a relaxed state.