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US 8,011,522 B2Granted
Synthetic closure with multiple internal layers, each layer having a variable cross section (VCS) along the closure length
AssigneeEPOLI-Espumas de Polietileno SA
InventorJosé Joaquim Romão de Sousa
Life of this patent
Estimating the term…
Abstract
A container closure includes an inner core having a non-cylindrical profile created by a variable longitudinal cross-sectional area. One or more outer layers concentrically surround the core and have a cross-sectional area inversely correlated to the inner core so that the overall container closure has an essentially cylindrical profile.
Claims13
A container closure comprising:
- an inner core with a non-cylindrical profile;
- one or more outer layers concentrically surrounding said inner core;
- a first one of said one or more outer layers being adjacent said inner core and having an interface area with said inner core, said inner core and said one or more outer layers having different compositions;
- and wherein the outer profile of the combined inner core and the outer layers is substantially cylindrical;
- said container closure characterized by:
- said inner core and said first one of said one or more outer layers being both present at every cross-section along the entire length of said closure;
- said interface between said inner core and said first one of said one or more outer layers having a continuously smooth variation along the entire length of said closure;
- and
- wherein said inner core has an asymmetric longitudinal profile along the entire length of said container closure.
6 more elements
Dependencies are inferred from the claim text.