Extraction Bag Thread-Seal Structure for 3D Squeezing Drainage
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Solution Overview
Problem
Existing extraction bags for tea leaves or similar materials face challenges in draining excess water, leading to inconvenient disposal and unnecessary loss of flavorful extract, and are not compatible with conventional form-fill-sealing machines due to design limitations.
Innovation Solution
The extraction bag features a flexible packaging material with integrated cover material, point sealing portions, and two hanging threads sealed within the bag body, allowing for three-dimensional squeezing by pulling the threads in opposite directions, enabling complete extraction and compatibility with conventional packaging machinery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional extraction bag with a single hanging thread is used, then the bag can be easily held and disposed of, but water remains in the bag body and cannot be sufficiently drained
Solution Approach 1:
The single hanging thread is segmented into two separate hanging threads with different functions: one for holding/disposal and another for squeezing drainage. This segmentation allows the bag to achieve both ease of operation and complete drainage by using each thread for its specific purpose.
Solution Approach 2:
The squeezing function is added by introducing a second dimension of operation - pulling the hanging thread in the longitudinal direction to activate the squeezing mechanism. This transforms the single holding function into dual functions: transverse holding and longitudinal squeezing.
2Ease of operation
If the hanging thread is held inside the bag body and extrudes from the bag, then squeezing can be achieved by pulling both ends, but conventional form-fill-sealing machines cannot be used for package filling
Solution Approach 1:
The base end of the hanging thread is extracted from the interior of the bag body and sealed to the outer surface. This allows the hanging thread to be held outside the bag body, enabling conventional form-fill-sealing machines to perform package filling while maintaining the squeezing capability through the point sealing portions.
Solution Approach 2:
The point sealing portions act as intermediaries between the hanging thread and the bag body. These point sealings allow the hanging thread to pass through or be held at specific locations on the bag body, enabling both machine filling and manual squeezing operations.
3Device complexity
If a single hanging thread is used for both holding and squeezing, then the structure is simple, but the squeezing effect is insufficient and water cannot be completely drained
Solution Approach 1:
The hanging thread system is segmented into two separate threads: one dedicated to holding/disposal and another to squeezing. This segmentation ensures that each thread can be optimized for its specific function, achieving complete drainage without compromising structural simplicity.
Solution Approach 2:
Instead of using a single thread for multiple functions, two separate threads are used to perform the squeezing action more effectively. The excessive action of having an additional thread ensures complete drainage by providing dedicated squeezing capability.
4Object-affected harmful factors
If the bag body is disposed of by bringing it to a trash can with hand support, then water drips are caught, but the hand becomes dirty and the process is inconvenient
Solution Approach 1:
The squeezing operation is performed as a preliminary action before disposal. By pulling the hanging thread to squeeze and drain the bag body completely before bringing it to the trash can, water drips are prevented, making disposal convenient and clean.
Solution Approach 2:
The bag body performs self-drainage through the squeezing mechanism activated by the hanging thread. The bag squeezes itself to expel water, eliminating the need for manual support during disposal and preventing hand contamination.
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
This design allows for complete extraction of tea leaves, preventing water drips during disposal and enabling manufacturing using conventional packaging machines, ensuring efficient and convenient use.
Implementation Method 1
when pulling the hanging thread towards outside of one side and the other hanging thread towards outside of the other side, in opposite directions to each other, and the packaging material is squeezed by the base end sealing portion and the point sealing portion approaching one position
Implementation Method 2
a cover material which is covered on the outer surface of the packaging material, and is integrated with the packaging material by edge sealing portions formed on a pair of opposing edges thereof
Data Source
AI summary
An extraction bag is disclosed that has a body that can be squeezed using hanging threads. A portion of a sheet body is folded back, and point seals are provided in the folded-back area. Two hanging threads are attached with the point seals as supporting points. Then, when the hanging threads are pulled in opposite directions, the direction of the one hanging thread is guided during pulling by the point seals and the end of an edge seal as supporting points, and the direction of the other hanging thread of a tag-attached hanging thread is guided during pulling by the point seals and the end of an edge seal as supporting points. By this means, the point seals are first pulled towards one another and then the base seals of the threads are also pulled towards one another, thereby squeezing the bag body from three dimensional directions.