Synthetic closure with multiple internal layers, each layer having a variable cross section (vcs) along the closure length
AssigneeEPOLI-Espumas de Polietileno SA
InventorJosé 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.
Claims19
1-11. (canceled)
A method of closing a container, said method comprising:
- forming an inner core of a container closure;
- concentrically surrounding said inner core with one or more outer layers to form an essentially cylindrical container closure;
- and
- using said container closure to close an opening in a container.
A container closure comprising:
- an extruded inner core with a first composition with a variable cross-sectional area along a length of the container closure;
- an extruded outer layer with a second composition concentrically surrounding said inner extruded core;
- and
- wherein the outer profile of said extruded outer layer is essentially cylindrical.
A container closure comprising a cylindrical body comprising a core and one or more layers concentrically surrounding said core, said body having a longitudinal cylindrical axis wherein the material composition of at least one of said core and said one or more layers varies longitudinally.
(canceled)
Dependencies are inferred from the claim text.