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| Testing Method for Softness of Baby Diapers Based on the Ring Method |
| Received:January 04, 2026 Revised:January 20, 2026 |
| DOI：10.11980/j.issn.0254-508X.2026.06.020 |
| Key Words:baby diapers softness bending forces friction force ring method |
| Author Name | Affiliation | Postcode | | WU Dongle* | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | FENG Yafang | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | ZUO Jianbo | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | YU Jiajing | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | SHI Yu | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | LYU Luxiong | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102 | 100102 | | ZHANG Qingwen* | 1Sinolight Paper Inspection & Certification Co., Ltd., Beijing, 100102
2National Paper Quality Inspection and Testing Center, Beijing, 100102
3Technology Innovation Center of Light Industrial Consumer Goods Quality and Safety, State Administration for Market Regulation, Beijing, 100015 | 100015 |
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| Abstract:To accurately evaluate the softness of baby diapers and explore the subjective-objective correlation between manual assessment and instrumental testing， a softness testing method for baby diapers based on the ring method was proposed. The testing principle and basic requirements of the apparatus for characterizing the softness of baby diapers were analyzed. A self-designed testing device for baby diapers softness was used to obtain typical force value load-displacement curve. Characteristic parameters extracted from the curves were employed to characterize softness， and the feasibility and reliability of the testing method were discussed. Meanwhile， a subjective evaluation experiment on the softness of baby diapers was carried out. The results showed that the ring method could rapidly and quantitatively characterize the softness of baby diapers， with all coefficients of variation less than 5.0， indicating good stability， and it had a certain ability to distinguish baby diapers with different softness levels. The Pearson correlation coefficient R of sofntness measure by two methods was 0.88， with a significant correlation. The cluster analysis results of the two methods were in good agreement， which verified the effectiveness of this method for testing the softness of baby diapers. |
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