Fluid Receiving Bag With Foldable Shape-Retaining Member
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Solution Overview
Problem
Existing sac-like containers with pouring parts face issues of bulkiness due to large diameter shape-retaining members and poor pouring stability, as they either become bulky when stacked or have difficulty widening the pour mouth during use.
Innovation Solution
A pouch with a foldable shape-retaining member in the pouring part, allowing for efficient space utilization and stable pouring by maintaining a nearly flat pour mouth shape, which widens outward during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cylindrical shape-retaining member with large diameter is used in the pouring part, then the pouring stability is improved, but the package becomes bulky and space utilization deteriorates
Solution Approach 1:
The shape-retaining member transitions from a rigid cylindrical structure to a flexible membrane structure that can dynamically change its configuration. When empty, the membrane folds flat to minimize volume; when filled, the internal pressure causes the membrane to expand and maintain a stable pouring shape, enabling the structure to adapt its form based on operational needs.
Solution Approach 2:
The invention replaces the traditional rigid cylindrical shape-retaining member with a flexible membrane structure that has pouring part wall portions integrated into it. This thin film structure can be collapsed to a flat state for compact storage and transport, yet when inflated by the contents, it forms a stable three-dimensional pouring shape that ensures reliable pouring performance.
2Volume of moving object
If a reinforcing rib is added to the pouring part to prevent bulkiness, then space utilization is improved, but the pour mouth cannot widen outward resulting in poor pouring performance
Solution Approach 1:
The membrane structure with pouring part wall portions allows the pour mouth to dynamically widen outward when the bag is filled with contents. The internal pressure of the contents causes the membrane to expand, naturally widening the pour mouth to an optimal size for pouring, whereas rigid reinforcing ribs would prevent such dynamic adjustment.
Solution Approach 2:
The invention changes the physical state and dimensions of the pouring part from a fixed, collapsed configuration during transport to an expanded, functional configuration during use. The membrane structure responds to changes in internal pressure and volume, automatically adjusting the pour mouth dimensions to optimize pouring performance without requiring additional reinforcing elements.
3Volume of moving object
If the pouring part is made flat to reduce bulkiness, then space utilization is improved, but the pouring stability deteriorates
Solution Approach 1:
The membrane structure maintains a flat, compact configuration during storage and transport to maximize space utilization. When the bag is filled with contents, the internal pressure causes the membrane to automatically inflate and form a stable three-dimensional pouring shape, providing pouring stability only when needed during the pouring operation.
Solution Approach 2:
The flexible membrane structure with integrated pouring part wall portions can transition between a flat two-dimensional state for compact storage and a three-dimensional inflated state for stable pouring. The thin film material provides the necessary flexibility to collapse flat while maintaining the ability to form a stable pouring shape when pressurized by the contents.
Data Source
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AI summary
[Problem] It is an object of the invention to provide a fluid containing bag having no concern of leaking water or breaking at all even in being used under a special situation of repeatedly exerting a strong external force. [Means for Resolution] A fluid containing bag A according to the invention includes a bag main body 10 which is constituted by front and rear two sheets 10a, 10b and an entire periphery of which is hermetically sealed except one portion, an inlet/outlet spout 30 one end side of which is connected to the one portion and other end side of which is extended to outside of the bag main body, means 28 for closing an inlet/outlet port of the inlet/outlet spout 30, and a reinforcing tape 40 attached to a portion or an entire periphery of an inner peripheral face of the bag main body connecting side base portion 14 of the inlet/outlet spout.