Hot-forming device for a heat-resistant container

Abstract

The disclosed hot-forming device for a heat-resistant container uses an existing molding device and can manufacture PET-resin heat-resistant containers comparatively inexpensively. Said hot-forming device is provided with: a loading unit (210) that loads an initial blow-molded article (30) onto a conveyance means (250), which is provided so as to be able to move in a straight line, by raising a table (211), fitting a positioning pin into a neck opening in the initial blow-molded article (30), and using a gripping means to grip the exterior of the neck; a heat-treatment unit (220) that hot-forms the initial blow-molded article (30) into an intermediate molded article; a final blow-molding unit (230) that performs final blow-molding on the intermediate molded article, yielding a heat-resistant container (10) having a prescribed shape; and a collection unit (240) that collects the heat-resistant container (10), removing same from the conveyance means (250).

Description

technical field [0001] The present invention relates to a thermoforming device for heat-resistant containers, which is constructed as: Obtained by one blow molding of a preform made of polyethylene terephthalate (PET) resin The primary blow molded parts are heat-treated and formed to form a heat-resistant container. Background technique [0002] Conventionally, for example, heat-resistant containers having heat resistance have been adopted as returnable containers for mineral water and the like. Returnable containers for mineral water and the like are generally recovered from consumers after being used and washed by washing liquid heated to a temperature of approximately 65°C (hot water washing). In this way, returnable containers can be reused many times. For this reason, heat-resistant containers made of polycarbonate resin or the like having high heat resistance are suitably used as returnable containers. Meanwhile, as a returnable container for mineral water, for exam...

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Problems solved by technology

[0004] However, for example, containers made of PET resin generally have low heat resistance and therefore there is a risk that the container may even be deformed (shrinked) by washing with hot water as mentioned above

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