Microwave oven pouch

The microwave oven pouch addresses steam venting and deformation issues by positioning the steam vent seal part on the inscribed ellipse, ensuring efficient steam release and pouch stability during heating.

JP7711374B2Active Publication Date: 2025-07-23TOYO SEIKAN KAISHA LTD
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Patent Information

Application Number
JP2020206425
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-12-14
Publication Date
2025-07-23
Estimated Expiration
2040-12-14

AI Technical Summary

Technical Problem

Existing microwave oven pouches face challenges in efficiently venting steam without causing deformation or breakage, particularly due to the positioning of the steam vent seal part affecting steam venting ease and pouch deformation after filling.

Method used

The pouch is designed with a steam vent seal part that contacts the inscribed ellipse's circumference at the inner end of the peripheral seal, with an ellipticity of 0.6 to 0.97, allowing the seal to peel and retract without affecting the peripheral seal, ensuring steam venting and preventing deformation.

Benefits of technology

This design enables effective steam venting without peripheral seal peeling or pouch deformation, enhancing steam venting performance and maintaining pouch integrity during heating.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

To provide a pouch for a microwave oven that easily releases steam during heating and can prevent deformation of a portion provided with an automatic steam removal mechanism after filling contents.SOLUTION: A pouch for a microwave oven 100 has a rectangular outer shape in plan view and comprises an automatic steam removal mechanism 120. The automatic steam removal mechanism 120 includes a steam release portion 121, and a steam removal seal portion 125 surrounding a periphery of the steam release portion 121. The steam removal seal portion 125 is formed so as to be located within a width region of a seal peeling start portion P of the steam removal seal portion 125 whose circumference of an inscribed ellipse E is closest to a center point O of an accommodating portion 110 or in the vicinity of the seal peeling start portion when assuming the inscribed ellipse E in contact with a center of an inner edge of each side of a peripheral seal portion 115 of the pouch.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Packaging bag used also for container for eating food

    JP2012076743A

  • Steam release standing pouch and content inclusion standing pouch

    JP2013256323A

  • Automatic aeration packaging bag

    JP2018095283A

  • Pouch

    JP2019116330A

  • Packaging bag for microwave oven cooking

    JP2020083320A

Cited By

  • Pouch for microwave oven

    JP2025074224A