Liner and preform

An improved inner liner for manufacturing a plastic preform having a closed bottom, a lower portion integral with and extending upwardly from said bottom portion, and a substantially cylindrical upper portion integral with and extending upwardly from the lower portion, the upper portion having an open neck and an upper rim;

• the liner further includes an interior surface, an exterior surface, and an integral mount means including a substantially continuous annular ring projecting inwardly from the interior surface to facilitate engagement of the liner to an internal projection, wherein the liner further includes a vent means including a plurality of channels in the annular ring of the mount means to permit the escape of gas from the internal cavity of the liner when the liner is affixed to said internal projection.

An improved inner liner for manufacturing a plastic preform having a closed bottom, a lower portion integral with and extending upwardly from said bottom portion, and a substantially cylindrical upper portion integral with and extending upwardly from the lower portion, the upper portion having an open neck and an upper rim;

• the liner further includes an interior surface, an exterior surface, and a vent means having a plurality of channels recessed in the internal surface of the liner to permit the escape of gas from the interior surface of the liner when the liner is affixed to an internal projection;
• wherein the liner is multi-layered and includes a barrier material.

A plastic container prepared from a multi-layered plastic preform, the container including an inner liner and a molded outer layer substantially adjacent to the inner liner, the inner liner having a closed bottom portion, a lower portion integral with and extending upwardly from said bottom portion, and a substantially cylindrical upper portion integral with and extending upwardly from the lower portion, the upper portion having an open neck and an upper rim;

• the liner further includes an interior surface, an exterior surface, and a mount means including an inwardly-projecting protrusion to facilitate engagement of the liner onto a core pin or rod.

A plastic container prepared from a multi-layered plastic preform, the container including an inner liner and a molded outer layer substantially adjacent to the plastic inner liner, the inner liner having a closed bottom portion, a lower portion integral with and extending upwardly from said bottom portion, and a substantially cylindrical upper portion integral with and extending upwardly from the lower portion, the upper portion having an open neck and an upper rim;

• the liner further includes an interior surface, an exterior surface, a longitudinal central axis, and at least one vent means recessed into the interior surface of the liner to permit the escape of gas from the interior of the liner when the liner is positioned on a core pin or rod.