Evaluation of furnishes for tissue manufacturing; wet pressing

Kullander, Johan; Nilsson, Lennart; Barbier, Christophe

doi:10.3183/npprj-2012-27-05-p947-951

Cited by 15 publications

(33 citation statements)

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“…A higher bulk can be achieved when tissue product is manufactured with advanced technologies (e.g., TAD process), where wet pressing of the paper web is minimized. Other process conditions, such as the use of lower pressure in the press nips, milder refining of fibers, and paper creping will also contribute to higher bulk (Kullander 2012). Besides technology, fiber type also plays an important role in tissue bulk.…”

Section: Bulkmentioning

confidence: 99%

“…Absorbent tissue products should be capable of readily absorbing water (absorbency rate) and retaining a high level of absorptivity (absorbency capacity) until the end of the task (Kullander 2012). The ability to absorb liquid depends on having a high capillary pressure to suck the liquid and high permeability to allow the fluid to quickly flow away from the point of insult.…”

Section: Absorbencymentioning

confidence: 99%

“…The penetration phenomenon is a very complex process because it will cause swelling of fibers as water is absorbed into fiber cell wall, resulting in changes in volume and pore structure of the paper (Thorp 1991). Absorbency properties are influenced by chemical properties of fiber surface and porosity of the paper web structure (Kullander 2012). Absorbent products have large amounts air-filled spaces among the fibers in the paper structure (Hubbe 2006).…”

Section: Absorbencymentioning

confidence: 99%

“…Absorbent products have large amounts air-filled spaces among the fibers in the paper structure (Hubbe 2006). Absorbency can be controlled by fiber type, refining, creping, plies, and additives (Kullander 2012).…”

Section: Absorbencymentioning

confidence: 99%

“…Freezing water corresponds to the water that has a depressed melting temperature due to the curved interfaces in micropores. The water present in macropores has similar thermodynamic properties to those of the bulk that is also present in the lumen, between fibers, and between plies (Kullander 2012). Most of the absorbed water is located in the spaces between fibers, and machine technology is an important variable to create inter-fiber spaces.…”

Section: Absorbencymentioning

confidence: 99%

See 4 more Smart Citations

Understanding the Effect of Machine Technology and Cellulosic Fibers on Tissue Properties – A Review

Assis¹,

Reisinger²,

Pal³

et al. 2018

BioResources

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Section: Bulkmentioning

confidence: 99%

Section: Absorbencymentioning

confidence: 99%

Section: Absorbencymentioning

confidence: 99%

Section: Absorbencymentioning

confidence: 99%

Section: Absorbencymentioning

confidence: 99%

See 3 more Smart Citations

Understanding the Effect of Machine Technology and Cellulosic Fibers on Tissue Properties – A Review

Assis¹,

Reisinger²,

Pal³

et al. 2018

BioResources

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Soft mechanical treatments of recycled fibers using a high-shear homogenizer for tissue and hygiene products

et al. 2021

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Bulk characterization of highly structured tissue paper based on 2D and 3D evaluation methods

Reitbauer,

Machado Charry,

Eckhart

et al. 2023

Cellulose

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The structure of the fibre network in tissue paper can be complex and difficult to analyze, due to the presence of superimposed structures such as creping and patterns that occur, for example, in through-air-dried (TAD) tissue. Properties like high absorbency, a pleasant handfeel, and strength-related characteristics are closely related to the fibre network structure. Therefore, in addition to standard tissue testing methods, techniques that provide insights into the intrinsic properties of the tissue fibre network are essential for a deeper understanding and potential for further optimization. In this study, we utilized 2D cross-sectional images and 3D X-ray microtomography ($$\mu$$ μ -CT) to evaluate and quantify the intrinsic properties of highly structured TAD tissue. We compared the results obtained from these two methods, focusing on intrinsic thickness, porosity, and the fibre volume to fibre surface area (Fv/Fs) ratio. The open structure of the fibre network, fabric patterns, creping, and protruding fibres make it challenging to define bulk boundaries. Therefore, we examined the effect of different bulk expansion diameters on intrinsic properties. This procedure allows to quantify the effects of under- and overestimation of bulk boundaries, and to determine which regions within the fibre network are affected by bulk expansion. In terms of intrinsic thickness, both 2D and 3D evaluations show similar trends, which facilitates direct comparison of 2D and 3D data. Porosity, on the other hand, does not show any correlation between 2D and 3D-based data. Together with the Fv/Fs parameter, this leads to the conclusion that the depiction of 2D data does not represent the whole fibrous material but predominantly fibres perpendicular or close to perpendicular to the cut plane, whereas 3D data represents all fibres, fibre bonds and network connectivity. This work aims at presenting modern approaches and novel procedures to quantify intrinsic properties of open fibre structures such as tissue, but could also be applied to fibrous networks in general. The introduced methods could provide the basis for future research on the interrelations between intrinsic properties and key tissue properties such as absorbency and handfeel.

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Evaluation of furnishes for tissue manufacturing; wet pressing

Cited by 15 publications

References 0 publications

Understanding the Effect of Machine Technology and Cellulosic Fibers on Tissue Properties – A Review

Understanding the Effect of Machine Technology and Cellulosic Fibers on Tissue Properties – A Review

Soft mechanical treatments of recycled fibers using a high-shear homogenizer for tissue and hygiene products

Bulk characterization of highly structured tissue paper based on 2D and 3D evaluation methods

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