Gasketing Element Structure for Exudate Containment With Less Elastic Film
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Solution Overview
Problem
Absorbent sanitary articles with reduced or no elastic elements in the waist regions face challenges in containing leakage of body exudates, particularly solid and semi-solid exudates, leading to increased manufacturing costs due to the high cost of elastic films.
Innovation Solution
The use of a gasketing element comprising non-elastic outer layers and a transversally stretchable elastic film sandwiched between them, attached to the chassis with a C-shaped profile, forms a pocket to contain exudates, while reducing the need for elastic films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elastic films are used in waist regions to provide elasticity and fit, then the article can adapt to different waist sizes, but the manufacturing cost increases significantly
Solution Approach 1:
The patent removes the elastic film component from the waist regions entirely, extracting only the necessary elastic function to the crotch region where a single elastic band provides the required elasticity and fit without the need for elastic films in the waist sections, thereby reducing material costs and simplifying manufacturing
Solution Approach 2:
The patent segments the elastic function by applying elasticity only to the crotch region rather than the entire waist region, allowing the front and back waist sections to be made of non-elastic materials that are easier and cheaper to manufacture while still providing adequate fit through the elasticized crotch area
2Ease of manufacture
If elastic films are removed from waist regions to reduce costs, then manufacturing cost decreases, but the capacity to contain leakage of body exudates is reduced
Solution Approach 1:
The patent applies elastic properties locally only to the crotch region where they are most needed for containing exudates, while the waist regions use non-elastic materials with different structural properties optimized for their specific function of securing the article to the body without requiring elasticity
Solution Approach 2:
The patent uses composite construction with non-elastic waist sections made from cost-effective materials combined with an elasticized crotch region, creating a hybrid structure that balances cost reduction with maintained leakage containment capability through the strategic placement of elastic properties
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 gasketing element effectively retains body exudates without the need for extensive elastic films, maintaining leakage protection and reducing manufacturing costs.
Implementation Method 1
a gasketing element with non-elastic outer layers and a transversally stretchable elastic film, ultrasonically welded or thermocompressed
Implementation Method 2
a gasketing element with non-elastic outer layers and a transversally stretchable elastic film, ultrasonically welded or thermocompressed
Implementation Method 3
at least one gasketing element (28) attached to the chassis (12) in the front and/or back waist sections, the or each gasketing element comprising two non-elastic outer layers (36, 38) and at least one transversally stretchable elastic film (40) sandwiched between the two non-elastic outer layers (36, 38)
Data Source
AI summary
An absorbent sanitary article including a chassis and at least one gasketing element including two non-elastic outer layers and a transversally stretchable elastic film, wherein the transversally stretchable elastic film is shorter than the two non-elastic outer layers both in longitudinal and transverse directions, so that the gasketing element has two non-elastic longitudinal portions and two non-elastic transverse portions forming a non-elastic frame surrounding the transversally stretchable elastic film.