Abstract: An improved modular mold having adjustable height shims provided between upper and lower panel sections to adjust the volume and height of a PET beverage bottle. The shims are easily replaced and form part of a high-strength mold set which accepts customized shoulder and base portions.

Abstract: A squeezable container with a paneled side wall which resists permanent deformation or denting when squeezed, and which preferably can be hot-filled. The container can be made substantially thinner than known hot-fill containers and includes a stepped vacuum panel profile for greater flexibility and resilience (bounce back). A circumferential ring is provided in the side wall to prevent ovalizing. The post walls (surrounding the vacuum panels) are stiffened to prevent vacuum collapse, by providing a substantially perpendicular junction between the vacuum panel and post wall, sufficient post wall depth, and/or reinforcing ribs in the post walls.

Abstract: A vacuum panel design for a hot-fill container which resists the increase in container diameter (barreling) which may occur during hot-filling and/or when the container is dropped on a hard surface. In one embodiment, adapted for a full wrap (360.degree.) label, a plurality of vacuum panels are symmetrically disposed about a vertical centerline of the container and horizontal stiffening ribs are provided across select portions of the panel, namely, across the vacuum panel recesses and across the post and panel ribs. In another embodiment, adapted for spot labeling, a pair of vacuum panel regions are symmetrically disposed about a vertical plane passing through the vertical centerline of the container, which regions form spot label areas and are joined by connecting end segments. The angular extent of the spot label areas and end segments may be varied to adjust the resistance to barreling and/or to provide a squeezable container, and horizontal stiffening ribs may further be provided to decrease barreling.

Abstract: An improved modular mold having adjustable height shims provided between upper and lower panel sections to adjust the volume and height of a PET beverage bottle. The shims are easily replaced and form part of a high strength mold set which accepts customized shoulder and base portions.