Disposable Hygiene Article Absorbent Core with Discontinuous Embossing
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Solution Overview
Problem
Existing disposable hygiene articles face challenges in providing improved comfort and leakage control while maintaining a simplified manufacturing process, as they often require complex structures and separate layers to manage absorbency and prevent leakage effectively.
Innovation Solution
A disposable hygiene article with a liquid-permeable topsheet and liquid-impermeable backsheet, featuring an absorbent core with a higher grammage central area integrated with a surrounding lower grammage area, and a discontinuous embossing pattern that aids in liquid distribution and positioning, allowing for three-fold folding without compromising absorbency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate layers and complex structures are used to improve leakage control and comfort, then leakage prevention and comfort are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges multiple functional layers into a single integrated absorbent core structure. The core comprises a first area with lower grammage and a second area with higher grammage, where the second area includes a front sub-area and a rear sub-area that are integrally formed. This integration eliminates the need for separate front and rear absorbent bodies while maintaining leakage control and comfort functions through the differentiated grammage zones within the unified structure.
Solution Approach 2:
The patent applies local quality by creating regions with different grammage within the absorbent core. The second area has a higher grammage than the first area, and within the second area, the front sub-area and rear sub-area have different grammage values. This local differentiation of material properties allows optimized performance in different zones (front, middle, rear) without requiring separate components, thus improving leakage control while maintaining structural simplicity.
2Reliability
If separate front and rear two-layer absorbent bodies are provided to improve fit and prevent leakage, then leakage control and fit are improved, but device complexity increases
Solution Approach 1:
The patent combines what would traditionally be separate front and rear absorbent bodies into a single integrated absorbent core. The core includes a first area and a second area, where the second area comprises a front sub-area and a rear sub-area that are continuously connected and integrally formed. This merging eliminates the complexity of assembling separate layers while maintaining the functional benefits of differentiated front and rear zones through the grammage variations within the unified structure.
3Reliability
If embossing lines and compressed grooves are added to prevent leakage and improve fit, then leakage control is improved, but manufacturing complexity increases
Solution Approach 1:
The patent achieves leakage control primarily through parameter changes in the material distribution rather than adding complex structural features. By varying the grammage (mass per unit area) to create a first area with lower grammage and a second area with higher grammage, the patent controls liquid flow and prevents leakage. This approach avoids the need for embossing lines or compressed grooves, simplifying the manufacturing process while maintaining effective leakage prevention.
4Productivity
If the absorbent core is folded for packaging, then packaging efficiency is improved, but the properties of the absorbent core may deteriorate
Solution Approach 1:
The patent segments the absorbent core into distinct functional zones (first area with lower grammage and second area with higher grammage, where the second area includes front and rear sub-areas). This segmentation creates a structure that is more resistant to deformation during folding. The differentiated grammage zones allow the core to flex and fold without compromising the integrity of the absorbent material or its liquid absorption properties, enabling efficient packaging while maintaining performance.
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 solution enhances comfort and leakage control by adapting to user anatomy, improving absorbency, and simplifying manufacturing by eliminating the need for separate layers, while the embossing pattern aids in correct positioning and visual security against leakage.
Implementation Method 1
the second area extends transversally and symmetrically in a transverse direction towards each side edge of the core and in a thickness direction of the article such that it protrudes outwards from a plane of the first area
Implementation Method 2
an absorbent core comprising an absorbent material, the core being arranged between the topsheet and backsheet
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The present disclosure relates to a disposable hygiene article (1) comprising an absorbent core (4) which comprises a first area (41) and a second area (42), the second area (42) being located centrally in the middle portion (B) and extending longitudinally along the centre axis (L), transversally and symmetrically in a transverse direction (T) towards each side edge (401; 402) of the core (4) and in a thickness direction (D) of the article such that it protrudes outwards from a plane of the first area (41), the second area (42) covering from 5-15% of a total area of the core (4), the first area (41) surrounding the second area (42) and covering the remainder of the total area of the core (4), the second area (42) having a grammage higher than the grammage of the first area (41) and wherein the second area (42) is integrated with the first area (42), and wherein the second area (42) is surrounded by a discontinuous embossing pattern which conforms to the shape of the second area (42) of the core (42).