Microwave Packaging Bag With Tear-Off Dish Conversion

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Solution Overview

Problem

Existing packaging bags for microwave ovens face challenges in transferring heated contents without the contents getting caught in the occlusion portion, and there is a need for improved user convenience when used as both a container and tableware, especially for liquid substances.

Innovation Solution

A self-standing packaging bag made of flexible film with a bottom surface and rising peripheral surfaces, featuring an openable member and a tear-off portion that converts into a dish, allowing easy accommodation and consumption of contents without interference from the openable member, and optionally including reinforcement for stability and utensils.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If an openable member is used to close the opening of the packaging bag, then the contents can be easily accommodated and the bag can be closed without heat sealing, but the openable member interferes with transferring and eating the contents after heating

Engineering Contradiction:
Improveease of closing the bagVSAvoidease of transferring and eating contents
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The packaging bag is divided into two functional parts: the upper portion with the openable member for closing, and the lower portion that can be separated as a standalone dish. This segmentation allows the openable member to remain in the upper portion while the lower portion serves as an interference-free eating container.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lower portion of the packaging bag is extracted as a separate usable dish that can be removed from the upper portion containing the openable member. This extraction eliminates the interference problem by separating the closing function from the eating function.

Inventive Principle:
Principle #2Taking out (Extraction)

2Stability of the object's composition

If the packaging bag is designed to stand freely in a microwave oven, then it provides good display effects and stability in stores, but it is difficult to transfer contents to another dish after heating

Engineering Contradiction:
Improveself-standing stabilityVSAvoidease of transferring contents
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The bag is segmented into an upper portion for microwave heating and a lower portion that forms a standalone dish. The lower portion is designed with sufficient size and structural integrity to maintain stability when separated and used as a serving dish, eliminating the need to transfer contents to another dish.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the opening portion is provided closer to the bottom surface than the openable member, then the container-shaped main body portion can be used as a dish, but the tear-off portion must be removed which includes the openable member

Engineering Contradiction:
Improveusability as a dishVSAvoidcomplexity of opening mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The packaging bag is pre-designed with a tear-off line positioned between the openable member and the bottom portion. This preliminary arrangement allows the user to easily tear the bag at the designated line, automatically separating the openable member from the dish portion without requiring additional tools or complex mechanisms.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12534280B2Packaging bag
Publication Date: 2026.01.27 KYORAKU CO LTD
  • US12534280B2 patent drawing
  • US12534280B2 patent drawing
  • US12534280B2 patent drawing

AI summary

A self-standing packaging bag for use in a microwave oven. The packaging bag is made of a flexible film formed into a bag shape, the packaging bag includes a bottom surface portion and a peripheral surface portion provided to rise from the bottom surface portion, the peripheral surface portion includes a front surface portion and a back surface portion facing each other and includes an opening that opens upward, the peripheral surface portion includes an openable member configured to open and close the opening, and an opening portion for opening the packaging bag, the opening portion is provided closer to the bottom surface portion than the openable member, a container-shaped main body portion obtained by tearing the peripheral surface portion in a circumferential direction at the opening portion and removing a tear-off portion above the opening portion is usable as a dish when eating contents in the packaging bag.