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AssigneeToyo Seikan Kaisha, Ltd.
InventorsToshiki Sakaguchi, Atsushi Komiya, Yuuki Satou
Estimating the term…
To provide a thermoplastic resin container that contains food or drink subjected to a retort processing for which completion of the retort processing can be confirmed and supervised with simple means without the need of an expensive member or facility, not only whether the temperature of the retort processing is reached but also whether the retort processing is performed as specified can be confirmed, and the consumer also can easily confirm completion of the retort processing of the product. The container is produced by two-stage stretch blow molding of a preform made of a thermoplastic resin in such a manner a part that is not stretched or is insufficiently stretched is formed at a part of the container, and the part that is not stretched or is insufficiently stretched is whitened to form a retort processing completion confirming part by heating in the retort processing after a content is packed and sealed in the container.
A thermoplastic resin container for which completion of a retort processing can be confirmed, characterized in that the thermoplastic resin container is made from a thermoplastic resin by two-stage blow molding and has a retort processing completion confirming part formed by a whitened part, which is produced by heating in a retort processing after a stretching processing.
A thermoplastic resin container, characterized in that the thermoplastic resin container is formed by forming an intermediate body by stretch blow molding of a preform made of a thermoplastic resin, heating the intermediate body to cause heat shrinkage, and then performing secondary stretch blow molding of the intermediate body in such a manner that a transparent or translucent part that is not stretched or is insufficiently stretched rapidly cooled is formed at a part of the intermediate body.
A method for producing a thermoplastic resin container for which completion of a retort processing can be confirmed, characterized in that an intermediate body is formed by stretch blow molding of a preform made of a thermoplastic resin, the intermediate body is heated to cause heat shrinkage, the container is formed by performing secondary stretch blow molding of the intermediate body in such a manner that a transparent or translucent part that is not stretched or is insufficiently stretched rapidly cooled is formed at a part of the intermediate body, a content is packed and sealed in the container, and then, the part that is not stretched or is insufficiently stretched is turned into a whitened part by heating in a retort processing to form a retort processing completion confirming part.
A heat-resistant thermoplastic resin container that is formed by two-stage blow molding and for which completion of a retort processing can be confirmed after a food or drink is packed in the container, characterized in that a retort processing completion confirming part is formed on the container by turning a part that is not stretched or is insufficiently stretched into a whitened part by heating in the retort processing performed after a content is packed and sealed in the container.
Dependencies are inferred from the claim text.