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| Research on Assessing Diapers Softness Based on Equivalent Area Model |
| Received:December 01, 2024 Revised:January 15, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.07.021 |
| Key Words:diapers softness equivalent area model stretching velocity |
| Fund Project:河南省市场监督管理局科技计划项目（HNSCJK202559）；河南省产品质量检验技术研究院重点扶持项目（YZK202408）。 |
| Author Name | Affiliation | Postcode | | LI Junpeng* | Henan Institute of Product Quality Inspection Technology, Zhengzhou, He’nan Province, 450047 | 450047 | | ZHOU Xinglong | Henan Institute of Product Quality Inspection Technology, Zhengzhou, He’nan Province, 450047 | 450047 | | SU Yang | Henan Institute of Product Quality Inspection Technology, Zhengzhou, He’nan Province, 450047 | 450047 | | WANG Zhidong | Henan Institute of Product Quality Inspection Technology, Zhengzhou, He’nan Province, 450047 | 450047 | | LI Nan | Henan Institute of Product Quality Inspection Technology, Zhengzhou, He’nan Province, 450047 | 450047 | | WANG Shucheng | Henan Aierkang Sanitary Products Co., Ltd., Xinxiang, He’nan Province, 453600 | 453600 |
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| Abstract:This study employed the equivalent area model annular method to assess the softness of diapers. The effects of curling direction （inward and outward）， stretching velocity， sample dimensions （thickness and width）， core structure， and selected radius （R₁） on softness of diapers were systematically investigated. The research showed that the inward curling softenss of diaper was greater than the outward curling softness. Softness remained relatively stable when the stretching velocity was below 8 mm/s. Thickness exerted a greater influence on softness than width. For samples with identical thickness and width， variations in raw materials， internal core structures， and filler materials could lead to differential softness. When the R₁ and calculated inner radius （R） differed， corrections must be applied to softness values based on the E-value （elastic modulus） and annular spacing. The results showed that the equivalent area model annular method was a viable approach for quantifying diaper softness， enabling softness grading based on objective measurements. The findings aligned closely with sensory softness evaluation results. |
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