Crown Cork & Seal Technologies Corporation

Theodore F Eberle

Jizu J Cheng

Richard G Kraft

Charles M Brandt

M A Khan

The present invention provides an improved blow molded plastic container that is adapted for hot fill applications. The hot fill container of the present invention comprises a plurality of vacuum panels, having substantially arched upper and lower ends, as opposed to the substantially straight upper and lower ends as described in the related art. The hot fill container of the invention further comprises novel and unique vacuum panel reinforcement means. The vacuum panel reinforcement means are a series of arched ribs. One series of ribs is placed in the label mounting area above the vacuum panels and one series of ribs is placed in the label mounting area below the vacuum panels. The ribs extend noncontinuously around the circumference of the body of the plastic container and are spaced apart from each other by a land area. Each rib is also spaced apart from the vacuum panel and is centered over a land area between vacuum panels. The hot fill bottle of the invention is particularly adapted to minimize the stress placed on the corners of vacuum panels and to resist flexing when the container is filled with a hot liquid.

Hot fill plastic container having spaced apart arched ribs

A shelf life indicating structure including a substrate printed with an oxygen sensitive ink in combination with an oxygen scavenging layer is disclosed. The oxygen scavenging layer prevents oxygen reaching the substrate for a predetermined interval. Once the finite oxygen scavenging capability of the layer is exhausted, oxygen reaches the substrate, thereby activating a visible indication such as a color change, in the ink. The substrate and layer may be formed into a patch or label for a package, and covered with an oxygen impermeable layer, such as a strip of aluminum foil which can be peeled off to initiate a shelf life indication structure. A method associated with the shelf life indicating structure is also provided.

Shelf life indicator

A container that provides for drainage of fluid underneath a product label on the container is provided. The container comprises a central label portion, a bottom portion below the central label portion, and at least one drainage port. Each drainage port comprises two ridges forming a groove through which fluid can drain from the central label portion to the bottom portion of the container. At a cross-sectional area of a container at the level of the drainage ports, the container has an outer surface at a radial distance from the longitudinal axis of the container. Preferably, each groove is located at the same radial distance as that of the outer surface of the container.

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Chicago, IL, United States of America

Theodore F Eberle