Abstract: A process for treatment of a thin-walled plastic container, the container having residual stresses resulting from its manufacture from a preform, which has been hot-filled and stoppered with liquid contents and then cooled once filled and stoppered, and being designed to undergo stress relief by a heat treatment, characterized in that it includes a stage prior to that of the heat treatment that consists in exerting mechanical force on the external surface of the thin wall of the container that is deformed by the hot filling to generate an interior pressure so as to compensate for at least the underpressure to which it is subjected and to restore its initial shape to it. An associated device for the implementation of the process is also described.

Abstract: A process for filling a container with a liquid includes providing a plastic container comprising a spout, a base, and a sidewall. The container is filled with a liquid and the spout is sealed with a closure. An internal vacuum or depression is formed within the container, resulting in visible deformation of the container. Heat is applied to the container to bring about internal pressurization of the container to at least compensate for the depression or vacuum.

Abstract: A heat resistant plastic container containing hot-filled liquid contents, comprising: a spout for filling the container with liquid contents; a closure configured to seal the spout; a base including a bottom portion that is bent toward the spout, the base including a structural reinforcement; and a sidewall extending upwardly from the base toward the spout, the sidewall including a zone of deformation, wherein the zone of deformation in the sidewall is configured to accommodate an initial deformation due to the cooling of the contents and to substantially regain its initial shape upon the relieving of immobilized stresses.

Abstract: This invention proposes a light-weight, thin-walled plastic container, in particular made of polyethylene terephthalate (PET), intended for post-filling pressurization so as to increase the rigidity of said container, and a process for manufacturing such container.

Abstract: This invention relates to a method for producing a thin-walled container, characterized in that a preform is deformed using a weight/wall surface ratio on the order of about 150 g/m2 to 250 g/m2.

Abstract: A process for pressurization of a thin-walled plastic container having a container weight to wall surface ratio on the order of 150 g/m2 to 250 g/m2, designed to contain a flat liquid, comprising the following stages: providing a container; filling the container that has residual stresses under cold conditions with said flat liquid; sealing the container after filling; and, heating the container, without raising the temperature of the liquid, to reach the temperature of the container's glass transition point so as to generate a pressurization of the interior of said container.

Abstract: A heat resistant plastic container containing hot-filled liquid contents, comprising: a spout for filling the container with liquid contents; a closure configured to seal the spout; a base including a bottom portion that is bent toward the spout, the base including a structural reinforcement; and a sidewall extending upwardly from the base toward the spout, the sidewall including a zone of deformation, wherein the zone of deformation in the sidewall is configured to accommodate an initial deformation due to the cooling of the contents and to substantially regain its initial shape upon the relieving of immobilized stresses.

Abstract: A lightweight, thin-walled heat resistant plastic container containing hot-filled liquid contents, comprising: a spout for filling the container with liquid contents; a closure configured to seal the spout; a base including a bottom portion that is bent toward the spout, the base including a structural reinforcement configured to withstand hydrostatic pressure from the hot-filling of liquid and configured to prevent significant deformation in the base upon the cooling of the hot liquid; and a sidewall extending upwardly from the base toward the spout, the sidewall including a zone of deformation, wherein the zone of deformation in the sidewall is configured to accommodate an initial deformation due to the cooling of the contents and to substantially regain its initial shape upon the relieving of immobilized stresses.

Abstract: The invention relates to a method for producing a thin-walled container, characterised in that a preform is deformed using a weight/wall surface ratio of the order of 150 g/m2 to 250 g/m2.

Abstract: A process for manufacturing a thin-walled, high-capacity container of more than 2 liters, includes the following stages: Hot-shaping or cold-shaping to a desired volume a preformed shape that has a collar and a neck designed to receive a plug, whereby this preformed shape is able to exhibit residual stresses after its shaping to the desired volume, Using a material weight/developed surface ratio for the container ranging between 150 g/m2 and 250 g/m2, and more particularly between 150 g/m2 and 200 g/m2. The container and the device for receiving this container are described.

Abstract: A process for pressurization of a thin-walled container, designed to contain a flat liquid, includes the following stages: producing a thin-walled container by generating residual stresses, filling this container under cold conditions with the flat liquid, sealing the container after filling, and heating the wall of the container, without raising the temperature of the liquid, to reach the temperature point for release of the stresses so as to generate a pressurization of the interior of the container. The thus obtained container is also described.

Abstract: A process for filling a container with a liquid, including the following steps: (a) providing a plastic container comprising a spout, a base including a bottom portion with a portion that extends upwardly toward the spout, and a sidewall extending upwardly from the base toward the spout; (b) filling the container with a liquid; (c) sealing the spout with a closure; (d) permitting the formation of a depression or creation of a vacuum inside the container, and; (e) applying heat to the container to bring about shrinkage and internal pressurization of the container to compensate for at least the depression or vacuum of step (d).

Abstract: A lightweight, thin-walled heat resistant plastic container containing hot-filled liquid contents, comprising: a spout for filling the container with liquid contents; a closure configured to seal the spout; a base including a bottom portion that is bent toward the spout, the base including a structural reinforcement configured to withstand hydrostatic pressure from the hot-filling of liquid and configured to prevent significant deformation in the base upon the cooling of the hot liquid; and a sidewall extending upwardly from the base toward the spout, the sidewall including a zone of deformation, wherein the zone of deformation in the sidewall is configured to accommodate an initial deformation due to the cooling of the contents and to substantially regain its initial shape upon the relieving of immobilized stresses.

Abstract: A process for hot filling a container with a sterilized liquid, generally at a temperature that is between 60 to 95° C. An embodiment of the process includes (a) providing a container that is made of a polymer and following a process that can make it able to withstand the hot filling of said liquid; (b) filling the container with said hot liquid; (c) closing the filled container immediately after filling; (d) allowing the container to cool at least below a transition temperature that is on the order of from 40° C. to 50° C. and forming a depression inside the container, resulting in visible deformation; and (e) heating the container to bring about a relief of the residual stresses, whereby this relief leads to a shrinkage and consecutively generates an internal pressurization that compensates for at least the deformation undergone by the effects of the depression of stage (d).

Abstract: Process for hot filling a container with a sterilized liquid, generally at a temperature that is between 60 to 95° C., includes the following stages: a. Using a container made of one material and following a process that can make it able to withstand the hot filling of the liquid, whereby the container has residual stresses resulting from its manufacture, b. Filling the container with said hot liquid, c. Closing this filled container immediately after filling, d. Letting it cool at least below a solidification temperature of the container, bringing about a deformation by formation of a depression inside the container, and e. Heating the container to bring about a relief of the residual stresses, whereby this relief leads to a shrinkage and consecutively generates an internal pressurization of the container that compensates for at least the deformations undergone by the effects of the depression of stage d/.