A lightweight neck finish includes a retaining structure that interacts with a tamper band to cause frangible connectors between the tamper band and closure to break upon initial removal of the closure from the neck finish. An upper retention portion of the retaining structure has a profile with a reduced footprint as compared to a conventional retaining structure. A lower support portion of the retaining structure has an outermost diameter similar in size to an outermost diameter of a conventional retaining structure. However, the lower support of the lightweight neck finish is formed with one or more circumferentially extending slots and/or one or more vertical slots. The reduced footprint of the retention portion and the slots of the support portion minimize the amount of material, weight, and time and cost required to make the lightweight neck finish, while providing for increased tamper evidence visibility as compared to conventional neck finishes.

A lightweight neck finish includes a retaining structure that interacts with a tamper band to cause frangible connectors between the tamper band and closure to break upon initial removal of the closure from the neck finish. An upper retention portion of the retaining structure has a profile with a reduced footprint as compared to a conventional retaining structure. A lower support portion of the retaining structure has an outermost diameter similar in size to an outermost diameter of a conventional retaining structure. However, the lower support of the lightweight neck finish is formed with one or more circumferentially extending slots and/or one or more vertical slots. The reduced footprint of the retention portion and the slots of the support portion minimize the amount of material, weight, and time and cost required to make the lightweight neck finish, while providing for increased tamper evidence visibility as compared to conventional neck finishes.

Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.

Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.

A container may have a base, a sidewall connected to the base, a bell connected to the sidewall, and a finish connected to the bell. The base may have strap ribs to resist deformation of the base. The sidewall may have recessed columns to resist bending, leaning, crumbling, and/or stretching. The strap ribs and recessed columns may vertically line up along a central axis of the container to communicate forces on the container vertically along the container to continuously resist.

A container may have a base, a sidewall connected to the base, a bell connected to the sidewall, and a finish connected to the bell. The base may have strap ribs to resist deformation of the base. The sidewall may have recessed columns to resist bending, leaning, crumbling, and/or stretching. The strap ribs and recessed columns may vertically line up along a central axis of the container to communicate forces on the container vertically along the container to continuously resist.

A storage tote includes a main body with a base wall and a plurality of side walls. The base wall has a center area, a central ridge, a first side ridge, and a second side ridge. The center area is bounded by the plurality of side walls. The central ridge bisects the base wall. In addition, the central ridge has a first wall, a second wall, and a third wall. The first side ridge and the second side ridge are disposed across the center area and oriented parallel to the central ridge. The first side ridge is spaced apart from the first wall of the central ridge, while the second side ridge is spaced apart from the second wall of the central ridge.

A storage tote includes a main body with a base wall and a plurality of side walls. The base wall has a center area, a central ridge, a first side ridge, and a second side ridge. The center area is bounded by the plurality of side walls. The central ridge bisects the base wall. In addition, the central ridge has a first wall, a second wall, and a third wall. The first side ridge and the second side ridge are disposed across the center area and oriented parallel to the central ridge. The first side ridge is spaced apart from the first wall of the central ridge, while the second side ridge is spaced apart from the second wall of the central ridge.

A container may comprise a tubular body having a longitudinal axis and a rounded sidewall; a base portion; a rim portion; a vertical portion defined, in part, by the rounded sidewall, aligned along the longitudinal axis, and extending between the base portion and the rim portion; a plurality of grooves defined within the vertical portion, each of the grooves comprising a width defining opposing sides of each of the plurality of grooves, wherein: each of the plurality of grooves is aligned parallel with the longitudinal axis; the valley of each of the plurality of grooves is radially inset a distance from the vertical portion perimeter; and opposing sides of adjacently positioned ones of the plurality of grooves define a peak that is radially aligned with the vertical portion perimeter. The container may also comprise a set of base transition grooves extending between the base portion and the vertical portion and aligned parallel with the longitudinal axis.

A container may comprise a tubular body having a longitudinal axis and a rounded sidewall; a base portion; a rim portion; a vertical portion defined, in part, by the rounded sidewall, aligned along the longitudinal axis, and extending between the base portion and the rim portion; a plurality of grooves defined within the vertical portion, each of the grooves comprising a width defining opposing sides of each of the plurality of grooves, wherein: each of the plurality of grooves is aligned parallel with the longitudinal axis; the valley of each of the plurality of grooves is radially inset a distance from the vertical portion perimeter; and opposing sides of adjacently positioned ones of the plurality of grooves define a peak that is radially aligned with the vertical portion perimeter. The container may also comprise a set of base transition grooves extending between the base portion and the vertical portion and aligned parallel with the longitudinal axis.