Absorbent Structure With Adhesive Mesh Network For Leakage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current absorbent cores in personal care articles, particularly those with high superabsorbent material content, face challenges in achieving optimal liquid retention and leakage prevention while maintaining a dry feel for the wearer.
Innovation Solution
The development of absorbent structures comprising a mixture of superabsorbent particles and adhesive, where the superabsorbent particles are immobilized within a three-dimensional mesh network formed by the adhesive filaments, enhancing the absorbent structure's ability to retain liquids and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If superabsorbent material content is increased to improve liquid retention, then liquid retention capacity is improved, but leakage prevention and dry feel may be compromised
Solution Approach 1:
The invention uses a composite material system consisting of superabsorbent particles embedded in a adhesive mesh network. This composite structure combines the high liquid absorption capacity of superabsorbent materials with the structural integrity and containment properties of the adhesive network, achieving both high liquid retention (SAM Capture Value ≥98) and reliable leakage prevention without requiring excessive superabsorbent material content.
Solution Approach 2:
The adhesive is applied in a specific pattern to form a three-dimensional mesh network that selectively distributes binding functionality throughout the absorbent core. This localized quality approach ensures that superabsorbent particles are immobilized at critical locations where leakage prevention is most needed, while maintaining overall structural integrity and dry feel properties.
2Quantity of substance
If superabsorbent material content is increased to improve liquid retention, then liquid retention capacity is improved, but the dry feel to the wearer may deteriorate
Solution Approach 1:
The composite structure of superabsorbent particles within an adhesive mesh network creates a controlled architecture that manages liquid distribution. The adhesive network prevents excessive liquid accumulation at the wearer interface by containing superabsorbent particles in specific zones, thereby maintaining dry feel even with high superabsorbent material content (400-600 gsm) that provides superior liquid retention.
3Strength
If adhesive amount is increased to improve particle immobilization, then structural integrity is improved, but the SAM Capture Value may decrease
Solution Approach 1:
The invention optimizes the adhesive amount parameter to a specific range (4-5% by weight of superabsorbent particles) that achieves the optimal balance between structural integrity and liquid capture performance. This parameter optimization creates a three-dimensional mesh network with sufficient density to immobilize particles effectively while maintaining pore structure that allows high SAM Capture Value (≥98), resolving the trade-off between strength and capture efficiency.
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 proposed solution significantly improves the absorbent structure's capacity to retain liquids, as evidenced by a SAM Capture Value greater than 98, ensuring effective leakage prevention and a dry feel for the wearer.
Implementation Method 1
a mixture of superabsorbent particles and adhesive disposed between the first substrate material layer and the second substrate material layer, wherein the superabsorbent particles are disposed in an amount greater than or equal to 400 gsm and less than or equal to 600 gsm, and wherein the adhesive is disposed in an amount greater than or equal to 4% and less than or equal to 5%, by weight, of the weight of the superabsorbent particles, wherein the adhesive forms a three-dimensional mesh network comprising network adhesive filaments with the superabsorbent particles immobilized within the mesh network
Implementation Method 2
Each type of absorbent material helps to impart such absorbent cores with a range of properties useful in absorbing and retaining liquid bodily exudates. For example, pulp fluff or other fibrous absorbent material may absorb liquid more quickly than superabsorbent material, and the superabsorbent material may be able retain more liquid per particle than pulp fluff
Data Source
AI summary
Absorbent structures and methods of manufacture are disclosed. In one embodiment, an absorbent structure may comprise a first layer, a second layer, and a mixture of particles and adhesive disposed therebetween, the superabsorbent particles being disposed at greater than 400 gsm and less than 600 gsm, and the adhesive being disposed at greater than 4% and less than 5%, by weight, of the weight of the superabsorbent particles. The adhesive may form a three-dimensional mesh network comprising network adhesive filaments with the superabsorbent particles immobilized within the mesh network, and the network adhesive filaments extending substantially throughout a three-dimensional space defined by the network adhesive filaments and the superabsorbent particles, and wherein the absorbent structure has a SAM Capture Value greater than or equal to 98, according to the SAM Capture Test Method.