Segmented Absorbent Core for Multi-Brief Adaptation
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Solution Overview
Problem
Existing absorbent products, such as panty liners, face challenges in optimizing shape and size to provide reliable protection and comfort across various types of underwear, including thong-type, traditional, and hipster-type briefs, as previous solutions do not adequately conform to different anatomies or adapt to multiple brief models.
Innovation Solution
An absorbent core with a specific geometric design and material composition, featuring a longitudinal central line with symmetric first and second longitudinal portions, a head portion with mirror-imaged circular segments, an intermediate portion with convex edges, and a rear portion with tapered edges, optimized for use with various brief types, combined with a process for production using a mat-forming wheel and cellulosic fluff pulp, ensuring uniform structure and high absorption capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the core shape is optimized for thong-type briefs, then adaptability to thong-type briefs is improved, but comfort and protection for traditional briefs deteriorates
Solution Approach 1:
The core is divided into three distinct portions along its longitudinal axis: a head portion with wider dimensions for traditional briefs, an intermediate portion with reduced dimensions for hipster-type briefs, and a rear portion with further reduced dimensions for thong-type briefs. This segmentation allows the single core to adapt to different underwear types while maintaining comfort and protection for each.
Solution Approach 2:
The core employs a dynamic gradient in its transverse dimension, transitioning from a larger width at the head portion to a progressively smaller width at the intermediate and rear portions. This dynamic dimensional change enables the core to conform to different crotch widths of various brief types, providing both adaptability and reliable protection.
2Ease of manufacture
If the core has a uniform shape, then manufacturing simplicity is improved, but adaptability to different brief types deteriorates
Solution Approach 1:
The core maintains a consistent elongated overall form that is simple to manufacture, while introducing controlled variations in the transverse dimension parameter along its length. The head portion has a larger transverse dimension, the intermediate portion has a reduced dimension, and the rear portion has the smallest dimension. This parameter gradient allows adaptation to different brief types without complicating the fundamental manufacturing process.
3Ease of operation
If the core is smaller in size, then comfort for thong-type briefs is improved, but protection capability deteriorates
Solution Approach 1:
The core applies the local quality principle by concentrating its maximum absorption capacity in the head portion where bodily fluids most commonly occur, while reducing dimensions only in the rear portion for thong-type comfort. The intermediate portion provides a transition zone, ensuring that protection capability is maintained where needed while achieving comfort where required.
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 absorbent core provides optimal comfort, adaptation to anatomy, and protection across different brief types, maintaining absorption capacity and comfort while fitting within the crotch area, ensuring minimal movement and high liquid handling capacity, suitable for everyday use.
Implementation Method 1
The core comprises an absorbent material with absorbent characteristics and a superabsorbent material
Implementation Method 2
The core comprises an absorbent material with absorbent characteristics
Data Source
Figure 1
AI summary
The invention relates to an absorbent core (3), intended for use in an absorbent product such as a panty liner. The core (3) comprises an absorbent material and a superabsorbent material. The core (3) has a first extension in a longitudinal direction and a second extension in a transverse direction, and the core has a longitudinal central line (A) extending through the core, located between a first longitudinal portion (I) and a second longitudinal portion (II). The first and second longitudinal portions (I; II) are symmetric about the longitudinal central line (A). The core has a head portion (al), an intermediate portion (a2) and a rear portion (a3) extending in a longitudinal direction of the core. The head portion (al) comprises mirror imaged first circular segment portions (11; 11') and first edge lines (13; 13') to which the circular segment portions (11, 11') transition. The intermediate portion (a2) comprises mirror imaged first convex edge portions (15; 15'). The rear portion (a3) comprises second edge lines (17; 17') tapering towards a rear end (T5) and the central line (A) of the core in an angle (γ).