Modified sidewall of tethered closure

A closure comprising:

• a top panel including an upper surface and a lower surface;
• a rotational axis about which the top panel is centered;
• a cylindrical wall extending from the lower surface of the top panel;
• a retention band coupled to the cylindrical wall, the retention band attached to a bottom edge of the cylindrical wall by a plurality of frangible connections, the frangible connections providing a visual indication, when broken, that the closure has been opened;
• a first line of separation separating the cylindrical wall and the retention band and extending circumferentially around the closure from a first end to a second end, the plurality of frangible connections extending across the first line of separation and connecting the cylindrical wall and the retention band;
• a second line of separation extending from a first end to a second end;
• and
• a first tether coupling the retention band and the cylindrical wall after the plurality of frangible connections are broken, the first tether extending between the first line of separation and the second line of separation, the first tether extending from a first end coupled to the cylindrical wall to an opposing second end coupled to the retention band, the first tether extending vertically from a first edge at the first line of separation to an opposing second edge at the second line of separation, the first tether defining:
• a first thickness at the first edge of the first tether;
• and
• a second thickness at the second edge of the first tether, wherein the second thickness is at least 15% thicker than the first thickness, the first tether defining a third thickness at one-third of the distance from the first end of the first line of separation to the second line of separation in a direction parallel to the rotational axis, wherein the third thickness is at least 15% thicker than the first thickness to reduce a thickness of the cylindrical wall being slit at the first line of separation and avoid breakage of the first tether.

A closure comprising:

• a top panel including an upper surface and a lower surface;
• a rotational axis about which the top panel is centered;
• a cylindrical wall extending from the lower surface of the top panel;
• an inner surface of the cylindrical wall facing towards the rotational axis;
• a retention band coupled to the cylindrical wall, the retention band attached to a bottom edge of the cylindrical wall by a plurality of frangible connections, the frangible connections providing a visual indication, when broken, that the closure has been opened;
• a first line of separation separating the cylindrical wall and the retention band and extending circumferentially around the closure from a first end to a second end, the plurality of frangible connections extending across the first line of separation and connecting the cylindrical wall and the retention band, the bottom edge of the cylindrical wall defining a first thickness;
• a second line of separation extending from a first end to a second end, wherein the first and second ends of the second line of separation are further from the top panel than the first and second ends of the first line of separation;
• and
• a first tether coupling the retention band and the cylindrical wall after the plurality of frangible connections are broken, the first tether extending between the first line of separation and the second line of separation, the first tether extending from a first end coupled to the cylindrical wall to an opposing second end coupled to the retention band, the tether defining a second thickness that is a maximum thickness of the tether between the first line of separation and the second line of separation, wherein the second thickness is at least 10% thicker than the first thickness, the first tether defining a third thickness at two-thirds of the distance from the first end of the second line of separation to the first line of separation in a direction parallel to the rotational axis, wherein the third thickness is at least 10% thicker than the first thickness, wherein at least 70% of the first tether defines a thickness at least 10% thicker than the first thickness to reduce a thickness of the cylindrical wall being slit at the first line of separation and avoid breakage of the first tether, the first tether defining a fourth thickness at one-third of the distance from the first end of the first line of separation to the second line of separation in a direction parallel to the rotational axis, wherein the fourth thickness is at least 15% thicker than the first thickness to reduce a thickness of the cylindrical wall being slit at the first line of separation and avoid breakage of the first tether.