Fabric Bag with Sandwiched Bubble Wrap for Side Stability
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Solution Overview
Problem
Synthetic fabric bags tend to collapse and close their mouths due to side instability, making it difficult to load objects without assistance, as they lean inward and fail to maintain an open shape effectively.
Innovation Solution
The method involves assembling synthetic fabric pieces with bubble wrap sandwiched between them, using adhesive or bonding, where the bubble wrap's dimensions differ from the fabric, providing additional rigidity and stability while allowing for easier folding and deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional synthetic fabric bags are used, then the bags are lightweight and foldable, but the sides tend to lean inward and the mouth closes, making it difficult to load objects
Solution Approach 1:
The patent applies composite materials by combining synthetic fabric with a corrugated intermediate layer to create a hybrid structure. The fabric provides flexibility and lightness while the corrugated layer contributes rigidity and structural stability, resolving the contradiction between ease of operation and side stability.
Solution Approach 2:
The corrugated intermediate layer is applied selectively to specific regions of the bag, particularly at the base and along the sides, to provide localized structural support where needed most for preventing inward leaning, while maintaining the overall flexibility and foldability of the bag structure.
2Stability of the object's composition
If rigid structures like internal or external chassis are added to prevent bag collapse, then the side stability improves, but the bag loses its foldability and increases in weight
Solution Approach 1:
Instead of adding complex rigid chassis structures, the patent uses a composite material approach where a corrugated intermediate layer is bonded between fabric layers. This provides the necessary structural support for side stability while maintaining simplicity and foldability, avoiding the complexity of traditional rigid frameworks.
Solution Approach 2:
The patent employs flexible fabric layers combined with a corrugated intermediate layer to create a structure that maintains bag shape and prevents collapse without requiring rigid shells or thick structural elements. The flexible composite structure preserves foldability while providing adequate side stability.
3Strength
If the bubble wrap dimensions are made identical to the fabric pieces, then the bonding area is maximized, but the folding and deployment becomes more difficult
Solution Approach 1:
The corrugated intermediate layer is designed with dimensions slightly smaller than the fabric pieces, creating a local quality difference at the edges. This allows adequate bonding area in the central region while leaving peripheral margins in the fabric that facilitate easier folding and deployment without compromising overall bonding strength.
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 resulting bag maintains an open shape and stability, allowing for easier loading and unloading without external support, while maintaining the lightweight and foldable advantages of traditional bags.
Implementation Method 1
assembling two individual pieces of synthetic fabric, for example of polypropylene, and a bubble wrap sandwiched between the said pieces, the assembly being realized by coating with adhesive, or not, of one of the faces of the piece of fabric, then insertion and bonding (where applicable) of a piece of bubble wrap
Data Source
AI summary
Bag having at least one of its sides produced from a piece of fabric secured to a piece of bubble wrap; securing being achieved by coating one face of the piece of fabric with adhesive then applying a piece of bubble wrap, either via its bumpy face or via its smooth face. Attachment is performed by sewing, laminating or bonding a second piece of fabric to the first piece of fabric so as to sandwich a piece of bubble wrap between these two pieces of fabric.