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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2016.10
- 수록면
- 31 - 47 (17page)
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This overview focused on recent efforts to map and analyzed the fibrous distributions of tissue and towel paper products in order to gain insight into the meso-scale properties formed during the manufacturing processes that impact the end use performance. Two- and three-dimensional methods based on X-radiography are ideal for determining the distribution of mass for bulky papers with little or no ash content. When the two-dimensional X-radiography was paired with thickness measurements measured using twin laser profilometry, the center surface, thickness and apparent density could be mapped to a resolution of 25 μm in areas of up to 70 mm. Estimations of the center surface, thickness and apparent density could also be mapped using XR-μCT data sets. This method provided improved accuracy using the center surface to compensate for deformation of the material around features such as embossments and through air drying domes. However, the size of three-dimensional data sets currently limits the sampled area. XR-μCT data sets may also be used to determine the fibers segment orientation and fiber crossings for fibrous structures with sufficiently open structures. By calculating the inertial ellipsoid at each voxel, orientation angles and the shape of the ellipsoid are determined from the defined eigenvectors.
The Z-compressibility of selected regions within tissue and towel samples was characterized using a 2.37 mm cylindrical probe. The conventional wet pressed embossed features showed distinct yield stress as they transitioned from Phase I elastic deformation to Phase II defined as the region of feature collapse. One sample had a yield stress of 18 kPa, while the second was nearly twice that at 45 kPa. Collapsed thickness corresponded to earlier work [25] where thickness determined using non-contacting optical profilometry. The through air drying features were more easily collapsed and showed no distinct yield stress.
The Z-compressibility of selected regions within tissue and towel samples was characterized using a 2.37 mm cylindrical probe. The conventional wet pressed embossed features showed distinct yield stress as they transitioned from Phase I elastic deformation to Phase II defined as the region of feature collapse. One sample had a yield stress of 18 kPa, while the second was nearly twice that at 45 kPa. Collapsed thickness corresponded to earlier work [25] where thickness determined using non-contacting optical profilometry. The through air drying features were more easily collapsed and showed no distinct yield stress.
목차
INTRODUCTION
STRUCTURAL PROPERTIE
COMPRESSIVE RESPONSE
SUMMARY
Literature Cited
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UCI(KEPA) : I410-ECN-0101-2017-586-001654104