Absorbent Article Manufacturing with Rotated Main Bodies
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Solution Overview
Problem
Existing methods for manufacturing absorbent articles fail to differentiate the structure of the front edge from the rear edge, leading to uniform extension stress across both regions, which can result in poor fitting for both ventral and gluteal portions, and increase the size of production facilities, making equipment exchange and replacement complex.
Innovation Solution
A method involving a main body conveyance step, cutting step, waistline conveyance step, and main body arrangement step to create absorbent articles with distinct front and rear edge structures, where absorbent main bodies are rotated and positioned differently on the waistline continuum to vary extension stress and accommodate different body regions, using separate waistline regions with distinct structures and elastic member arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the region disposed on the rear waistline region side and the region disposed on the front waistline region side are alternately arranged along the conveyance direction with the same structure, then the production facility size is reduced, but the absorbent article fails to fit both ventral portion and gluteal portion effectively
Solution Approach 1:
The patent applies local quality by providing different structures for the front waistline region and rear waistline region. Specifically, the front waistline region has a first structure with different extension stress characteristics, while the rear waistline region has a second structure with different extension stress characteristics. This allows each region to be optimized for its specific function - the front region for ventral portion fitting and the rear region for gluteal portion fitting - thereby resolving the contradiction between adaptability and device complexity.
2Adaptability or versatility
If two opening patterns are formed in the waistline continuum with different patterns every other pattern, then the absorbent article can differentiate front and rear edges, but the production facility increases in size and exchange equipment becomes larger
Solution Approach 1:
The patent applies segmentation by dividing the waistline continuum into distinct front waistline region and rear waistline region segments. Each segment can be independently configured with different opening patterns and elastic member arrangements. This segmentation allows the front and rear edges of absorbent main bodies to have different structures while using a single continuous waistline continuum, thereby differentiating edge structures without requiring separate production lines or increasing facility size.
3Adaptability or versatility
If uniform extension stress is applied across both front and rear waistline regions, then the manufacturing process is simplified, but the absorbent article fails to accommodate different body regions
Solution Approach 1:
The patent applies local quality by configuring different extension stress characteristics in different waistline regions. The front waistline region is designed with a first extension stress suitable for ventral portion accommodation, while the rear waistline region is designed with a second extension stress suitable for gluteal portion accommodation. This local differentiation allows the absorbent article to accommodate different body regions effectively while maintaining a relatively simple manufacturing process through continuous formation of the waistline continuum.
Data Source
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AI summary
A method for manufacturing an absorbent article comprises: a main body conveyance step (S1) of conveying a main body continuum (C10) in which front edges of absorbent main bodies are adjacent to each other, and the rear edges of the absorbent main bodies are adjacent to each other; a cutting step (S3) of cutting the main body continuum to obtain the individual absorbent main bodies (10); a waistline conveyance step (S4) of conveying a waistline continuum (C20, C30); and a main body arrangement step of rotating the absorbent main bodies and disposing the absorbent main bodies on the waistline continuum. In the main body arrangement step (S5), after absorbent main bodies adjacent to each other in the conveyance direction are rotated in opposite directions, the front edges (10F) of the absorbent main bodies are disposed in a region (C20) of the waistline continuum on a side of the front waistline regions, and the rear edges (10R) of the absorbent main bodies are disposed in a region (C30) of the waistline continuum on a side of the rear waistline regions.