Infant Pant Elastic Belt with Localized Cut Windows
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Solution Overview
Problem
Existing small size pant-type absorbent articles do not provide a good fit and are not easily applicable on infants, as they are simply downsized versions of larger pants, which do not accommodate the unique proportions of infants' lower torso and thighs, and require complex application procedures.
Innovation Solution
A wearable article with a ring-like elastic belt comprising front and back belts, where the elasticity of some elastic bodies is reduced by creating a maximum elastic cut window, allowing for a customizable fit and ease of application, with dimensions optimized for infants weighing less than 8 kg, including a longitudinal length of 300-440 mm and a maximum elastic cut window less than 100 mm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If small size pants are simply downsized from larger pants, then manufacturing cost is reduced, but fit and comfort for infants deteriorate
Solution Approach 1:
The patent applies different elastic body configurations to different regions of the pants. The front belt has elastic bodies with first elasticity, while the back belt has elastic bodies with second elasticity that is different from the first. This local differentiation allows the pants to adapt to the specific body proportions of infants in different regions, resolving the contradiction between standardized manufacturing and customized fit.
Solution Approach 2:
The patent changes the elasticity parameter of elastic bodies in different regions. By setting different elasticity values for front and back belts, the pants can accommodate the unique proportions of infant lower torsos and thighs while still using standardized manufacturing processes and materials.
2Ease of operation
If pant-type articles have predefined waist and leg openings, then ease of application is improved, but complexity of the structure increases
Solution Approach 1:
The elastic belt is segmented into front and back portions with different elastic properties. This segmentation allows each portion to be optimized for its specific function while maintaining overall simplicity of the pants structure, enabling easy application without excessive complexity.
Solution Approach 2:
The patent introduces dynamic elasticity characteristics to the belt, where different regions have different elastic responses. This dynamic property allows the belt to automatically adapt to the infant's body shape during application, simplifying the application process while maintaining functional effectiveness.
3Ease of manufacture
If elastic bodies are uniformly distributed in the belt, then manufacturing simplicity is maintained, but fit around infant body contours deteriorates
Solution Approach 1:
The patent implements local quality by distributing elastic bodies non-uniformly in the belt. The front belt and back belt have different elastic body configurations that match the specific contour requirements of the infant's body in those regions, achieving better fit while maintaining manufacturing simplicity through a systematic distribution pattern.
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 provides a comfortable, easy-to-apply absorbent article with improved fit and containment capabilities, preventing leakage and gather marks, while allowing for cost-effective manufacturing by using common materials and elastic profiles for various sizes.
Implementation Method 1
each of the front belt and back belt are formed by an inner sheet, an outer sheet, and a plurality of elastic bodies sandwiched therebetween
Data Source
AI summary
Disclosed is a wearable article 20 comprising a main body 38 and a ring-like elastic belt 40 comprising a front belt and a back belt each formed by an inner sheet, an outer sheet, and a plurality of elastic bodies sandwiched therebetween and running in the transverse direction substantially parallel to each other, and at least a portion of the elasticity of at least some of the elastic bodies are removed of its elasticity, the transverse width of the elastic body having the longest length removed of its elasticity defined as a maximum elastic cut window; wherein the length of the article along the longitudinal axis is from 300 mm to 440 mm; and the maximum elastic cut window is less than 100 mm.