Disposable Pant Chassis Elastic Overlap Construction
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Solution Overview
Problem
Current pant-like absorbent article garments formed using pre-laminated elastomeric materials face limitations in modifying individual layers, leading to challenges in achieving superior chassis construction and reduced manufacturing costs, as the layers typically have fixed dimensions and do not allow for variability or overlapping of elastic elements.
Innovation Solution
The absorbent article garments are formed by creating laminated elastomeric materials during the manufacturing process, allowing for variability in longitudinal lengths and overlapping of elastic elements within the laminate, which enables a more flexible and cost-effective chassis structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pre-laminated elastomeric materials are used, then the structure is simple and manufacturing is straightforward, but the layers cannot be modified and additional elastic elements cannot be added
Solution Approach 1:
The chassis is divided into multiple separate layers including a first nonwoven layer, a second nonwoven layer, and an elastomeric layer positioned between them. This segmentation allows each layer to be independently designed and modified, enabling the addition of different elastic elements (waistband elastics, leg elastics, crotch elastics) at specific locations without requiring modification of a pre-laminated structure.
Solution Approach 2:
The patent creates a dynamic chassis construction where the elastomeric layer and nonwoven layers can be configured in different arrangements to provide varying degrees of elasticity and support in different regions. This allows the chassis to adapt to different fit requirements and functional needs while maintaining a relatively simple base structure.
2Reliability
If additional nonwoven layers are added to achieve improved fit and leakage protection, then performance improves, but manufacturing cost increases
Solution Approach 1:
The elastomeric layer serves multiple functions simultaneously: it provides structural support, enables elastic expansion and contraction, and works with the nonwoven layers to prevent leakage. By making the elastomeric layer multi-functional, the patent reduces the need for additional specialized nonwoven layers, thereby controlling manufacturing costs while maintaining reliability.
Solution Approach 2:
The patent optimizes the properties of the existing layers rather than simply adding more layers. By adjusting the elastomeric content, layer thickness, and configuration parameters, the chassis achieves improved fit and leakage protection through parameter optimization rather than through increased material quantity.
3Adaptability or versatility
If pre-laminated materials with fixed dimensions are used, then manufacturing is simpler, but variability in elastic distribution cannot be achieved
Solution Approach 1:
The patent applies different elastic properties to different regions of the chassis by positioning specific elastic elements in specific locations. Waistband elastics are placed at the waist region, leg elastics at the leg openings, and crotch elastics in the crotch area. This local differentiation of elastic distribution is achieved through the modular layer structure rather than through fixed pre-laminated materials.
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 results in improved chassis construction with reduced manufacturing costs by allowing for customizable elastic distribution and enhanced fit and leakage protection without the need for additional nonwoven layers, providing a more comfortable and effective absorbent article.
Implementation Method 1
the elastic material providing a secure fit for a wearer
Data Source
AI summary
One example pant-like garment may comprise a front panel comprising a front garment-side layer, a front body-side layer, and one or more front chassis elastic members disposed between the front garment-side layer and the front body-side layer, and a rear panel comprising a rear garment-side layer, a rear body-side layer, one or more rear chassis elastic members disposed between the rear garment-side layer and the rear body-side layer, and one or more rear panel leg elastic members directly overlapping the one or more rear chassis elastic members in a vertical direction perpendicular to longitudinal and lateral directions. The garment may further comprise an absorbent assembly disposed between the front panel and the rear panel.