Resealable Bag With Inelastic Deformable Polymer Sealing
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Solution Overview
Problem
Existing flexible packaging solutions fail to maintain food freshness after opening due to ineffective or costly integrated closing mechanisms, which are difficult to use and prone to failure.
Innovation Solution
A resealable bag with an integrated, low-cost flexible member that can be deformed to maintain a closed position, allowing repeated sealing and unsealing without additional mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external non-integrated closing mechanisms (twist ties, elastic bands, adhesives) are used, then the bag can be closed, but these mechanisms are expensive to manufacture, easy to lose, and do not always prevent items from spilling
Solution Approach 1:
The patent combines the closing mechanism with the bag structure itself by integrating a flexible member (such as a hinge or flexible bridge) that connects the front and back walls of the bag. This merging eliminates the need for separate external closing mechanisms like twist ties or elastic bands, while providing reliable closure that prevents items from spilling. The flexible member is attached to the bag walls and works in conjunction with a closure member to maintain the closed position.
2Ease of operation
If integrated closing mechanisms (male-female members, pressure-sensitive adhesive) are used, then the bag maintains closed position, but these mechanisms are expensive to manufacture and difficult or cumbersome to use
Solution Approach 1:
The patent employs a self-service closing mechanism where the flexible member and closure member work together to automatically maintain the closed position without requiring complex fastening operations. The closure member can be a simple tab or flap that naturally rests against the front wall, held in place by the flexibility of the connecting member. This eliminates the need for expensive pressure-sensitive adhesives or complex male-female interlocking mechanisms, making the bag easy to close and manufacture.
3Ease of operation
If the flexible member is made more flexible to allow deformation, then the bag can be easily sealed and unsealed, but the member may not maintain the closed position reliably
Solution Approach 1:
The patent utilizes a flexible member with controlled flexibility that can be deformed during sealing but maintains sufficient rigidity to hold the closed position. The flexible member (such as a hinge or flexible bridge) is designed with appropriate material properties and geometric characteristics to allow bending for easy sealing while providing enough structural integrity to prevent the bag from opening unintentionally. This balanced flexibility ensures both ease of operation and reliable closure maintenance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resealable bag effectively keeps contents fresh by maintaining a sealed position, is easy to use, and adaptable throughout the product's life, reducing spills and waste.
Implementation Method 1
an inelastic deformable polymer for a resealable bag. The polymer is deformed and maintains the bag in a closed configuration
Implementation Method 2
The polymer is deformed and maintains the bag in a closed configuration
Data Source
AI summary
The resealable bag has a main body including a resealing layer. The resealable bag is selectively positionable between an open, unsealed position and a closed, sealed position. When the resealable bag is in the closed, sealed position, the resealing layer is in a deformed shape. Advantageously, the resealable bag can be repeatedly rolled and sealed, and unrolled and unsealed, as desired without the use of additional integrated or non-integrated sealing mechanisms.