Micro-textured Elastic Laminates for Absorbent Articles
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Solution Overview
Problem
Existing absorbent articles with elastic materials often appear unattractive, are costly, and perform poorly due to rough textures, inefficient material use, and inadequate body conformance.
Innovation Solution
The development of laminates with micro-texture, comprising layers with specific attachment lines and extensibility, which are mechanically activated to create a smooth, elastic, and conformable material for use in absorbent articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elastic materials are used in absorbent articles, then the article can conform to a wearer's body, but the material appears rough and plastic-like with poor aesthetic appearance
Solution Approach 1:
The patent applies parameter changes by modifying the surface texture parameters of the elastic laminate through mechanical activation. The activation process changes the micro-structure parameters of the plastic layer, creating a smooth activated surface that maintains elasticity while eliminating the rough plastic appearance. This resolves the contradiction by changing the surface parameters without compromising the bulk elastic properties needed for body conformance.
2Device complexity
If integral elastic materials are used, then the article structure is simplified, but material usage efficiency decreases and costs increase
Solution Approach 1:
The patent applies segmentation by dividing the elastic component into separate layers: an elastic layer and a plastic layer that are mechanically attached. This segmentation allows each layer to perform its specific function efficiently - the elastic layer provides stretch and recovery while the plastic layer provides structural support and can be optimized for material efficiency. The mechanical attachment at specific attachment lines enables this division while maintaining overall structural simplicity.
3Ease of manufacture
If elastic materials with rough texture are used, then manufacturing is simpler, but the aesthetic appearance and perceived quality deteriorate
Solution Approach 1:
The patent applies preliminary action by incorporating the plastic layer with attachment lines before the final assembly process. The mechanical activation that creates the smooth surface is performed as a preliminary step during manufacturing, allowing the rough-textured elastic material to be transformed into a smooth-finish component before it is integrated into the final absorbent article. This preliminary surface treatment maintains manufacturing simplicity while achieving the desired aesthetic appearance.
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 laminates with micro-texture enhance the appearance, reduce costs, and improve performance by providing a smooth, elastic, and body-conformable material for absorbent articles.
Implementation Method 1
The first layer has a first extensibility and a first elasticity; the second layer has a second extensibility and a second elasticity
Data Source
AI summary
A laminate with micro-texture having attachment lines oriented in a primary direction and mechanically activated in the primary direction.