Double container and its manufacturing method

The double container design with a sandwiched gas barrier layer and biaxial molding process addresses the issue of reduced gas barrier properties in high humidity, maintaining performance by protecting the gas barrier layer from moisture exposure.

JP7776722B2Active Publication Date: 2025-11-27KYORAKU CO LTD
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Patent Information

Application Number
JP2021028500
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-02-25
Publication Date
2025-11-27
Estimated Expiration
2041-02-25

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Abstract

To provide a double container of which decrease in gas barrier properties in a humid environment is suppressed.SOLUTION: According to the present invention, a double container is provided comprising a container body which is structured such that it has an outer shell and an inner bag, and the inner bag shrinks as contents decrease, in which the inner bag comprises an inner layer, a gas barrier layer, and an outer layer in order from the inside of the container body.SELECTED DRAWING: Figure 1
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Citation Information

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