摘要:
A one-piece plastic container includes a body defining a longitudinal axis and having an upper portion, a sidewall portion and a base portion. The base portion defines a plurality of feet extending therearound. The base portion defines a contact diameter ratio of approximately 70-74% and a contact length ratio of approximately 20-23% for a plastic container having a volume capacity of approximately one (1) liter (1000 cc). According to additional features, the one-piece plastic container can have a nub defined on the base portion. For a one-piece plastic container having a volume capacity of approximately one (1) liter (1000 cc), the nub has a diameter of approximately 3-7 mm (0.12-0.28 inch), the base portion defines a contact area ratio of approximately 23-25%, and each foot defines corner transition portions each having a fillet radius of approximately 4-10 mm (0.16-0.39 inch).
摘要:
A one-piece plastic container includes a body defining a longitudinal axis and having an upper portion, a sidewall portion and a base portion. The base portion defines a plurality of feet extending therearound. The base portion defines a contact diameter ratio of approximately 70-74% and a contact length ratio of approximately 20-23% for a plastic container having a volume capacity of approximately one (1) liter (1000 cc). According to additional features, the one-piece plastic container can have a nub defined on the base portion. For a one-piece plastic container having a volume capacity of approximately one (1) liter (1000 cc), the nub has a diameter of approximately 3-7 mm (0.12-0.28 inch), the base portion defines a contact area ratio of approximately 23-25%, and each foot defines corner transition portions each having a fillet radius of approximately 4-10 mm (0.16-0.39 inch).
摘要:
A hot-fill PET container which includes opposed hand grip sections in the sidewall enabling the container to be grasped between the thumb and fingers of one hand to facilitate handling of the container and pouring of liquid from the container. Each hand grip section includes an outwardly bulged surface having an outside edge and an integral hinge enabling opposite bulged surfaces to invert and collapse inwardly toward each other to accommodate internal forces tending to collapse the container sidewall inwardly due to filling of the container with liquid at an elevated temperature and subsequent cooling of the liquid.
摘要:
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.
摘要:
An improved base configuration for a plastic container used in hot-fill applications. The base is concentric with the side walls of the container and an outer ring of the base is connected to a central dome portion which extends upwardly into the body cavity of the container and terminates in a central disk region, which is also generally concentric with the side walls of the container. Radiating in a substantially spiral fashion, from the central disk downward along the dome to the outer ring, are a number of reinforcement ribs and slides which increases the amount of material in the base which is sufficiently oriented and able to resist the deformation induced by unrelaxed retractive stresses during filling of the container with a liquid of elevated temperature.
摘要:
A plastic container comprising a blow-molded plastic bottle with a reinforcing ring encircling the bottle base to reinforce the base against undesirable deformation. The ring encircles the lower end of the bottle base. Pressure within the container expands the base structure outwardly against the ring and creates tension in the ring to maintain the ring in assembly relation with the bottle base in which the ring reinforces the base and acts to maintain the structural integrity of the base. The container is manufactured by inserting the ring into the base portion of the blow-mold such that the ring defines a portion of the blow-mold cavity. A plastic preform is blow-molded outward, into engagement with the ring to secure the ring to the base.
摘要:
A method of forming a plastic container from a preform. The method comprises injecting a forming liquid into the preform at a predetermined system pressure range, a predetermined flow rate, and a predetermined duration sufficient to create a pressure spike at a peak pressure. The peak pressure being greater than the system pressure to urge the preform into the mold cavity, thus creating enhanced container definition, reduced post mold shrinkage, lower residual material stresses, and/or an improved transfer of the mold geometry and engraving to the final formed container.