Tampon Secondary Absorbent Segmentation for High-Speed Manufacturing
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Solution Overview
Problem
Existing tampon manufacturing processes face challenges in efficiently integrating secondary absorbent materials with primary absorbent members and withdrawal cords, leading to increased costs, complexity, and potential performance issues due to interwoven hydrophilic and hydrophobic materials.
Innovation Solution
The method involves constructing tampons with primary absorbent pads in either a rolled or crossing configuration, where a secondary absorbent member is positioned and compressed along with the primary absorbent pads to form a self-sustaining cylindrical shape, allowing for separate construction and assembly of withdrawal cords and secondary absorbent materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the tubular weaving process is used to integrate secondary absorbent material into the withdrawal cord construction, then the secondary absorbent material can be incorporated into the tampon assembly process, but the process speed is relatively slow with low throughput
Solution Approach 1:
The patent divides the secondary absorbent material into discrete segments or discrete lengths that are positioned at specific locations along the withdrawal cord, rather than using a continuous weaving process. This segmentation allows for faster assembly by enabling pre-positioning and quick attachment of the segmented material to the cord during high-speed tampon manufacturing.
2Ease of manufacture
If composite yarn is assembled by interwoven hydrophilic and hydrophobic materials, then the withdrawal cord and secondary absorbent material can be integrated, but the divergent functions of the materials may have a negative effect on overall tampon performance
Solution Approach 1:
The patent extracts the secondary absorbent material from the woven composite yarn structure and positions it as separate discrete segments along the withdrawal cord. This separation allows the hydrophilic secondary absorbent material and hydrophobic withdrawal cord material to maintain their distinct functions without interference, eliminating the performance degradation caused by interweaving materials with divergent properties.
3Ease of manufacture
If discrete lengths of secondary absorbent material are formed on continuous composite yarn and attached to primary absorbent material, then the tampon can be assembled, but the process requires numerous weaving operations increasing cost and complexity
Solution Approach 1:
The patent prepares the secondary absorbent material as discrete segments ready for attachment to the withdrawal cord before the final tampon assembly process. This preliminary preparation eliminates the need for numerous weaving operations during tampon manufacturing, as the segmented material can be quickly positioned and attached using simpler, faster methods compatible with high-speed production lines.
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 approach enables tampon manufacturing at higher speeds while providing flexibility in material choices and constructions, potentially improving tampon performance by ensuring effective absorption and reducing bypass failures.
Implementation Method 1
the secondary absorbent material may be made from material such as, for example, fibrous materials formed by a carding process
Implementation Method 2
As fluid is absorbed, these compressed tampons are configured to re-expand toward an original pre-compressed size
Data Source
AI summary
Aspects of the present disclosure relate to methods for making tampons including primary absorbent members and secondary absorbent members. In some configurations, the tampons may be constructed with a primary absorbent member formed by a primary absorbent pad in a rolled configuration. In some configurations, the tampons may be constructed with a primary absorbent member formed by first and second primary absorbent pads positioned in a crossing configuration.