Comparison between uncreped and creped handsheets on tissue paper properties using a creping simulator unit

Cellulose ◽  
2020 ◽  
Vol 27 (10) ◽  
pp. 5981-5999 ◽  
Author(s):  
Tiago de Assis ◽  
Joel Pawlak ◽  
Lokendra Pal ◽  
Hasan Jameel ◽  
Lee W. Reisinger ◽  
...  
Keyword(s):  
Paper Properties ◽  
Tissue Paper

scholarly journals Cellulose fiber enzymatic modification to improve the softness, strength, and absorption properties of tissue papers

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 846-861
Author(s):  
Flávia P. Morais ◽  
Ana M. M. S. Carta ◽  
Maria E. Amaral ◽  
Joana M. R. Curto
Keyword(s):  
Fiber Type ◽  
Capillary Rise ◽  
Reaction Times ◽  
Cellulose Fiber ◽  
Strength Properties ◽  
Enzymatic Modification ◽  
Absorption Properties ◽  
Paper Properties ◽  
Tissue Properties ◽  
Tissue Paper

Effects of enzymatic modification were evaluated in bleached Eucalyptus kraft and sulfite cellulosic pulps, separately, to improve key tissue paper properties and design new Eucalyptus fiber applications. Different cellulase dosages (0.01 mg and 0.1 mg of enzyme/g of pulp) and reaction times (30 min and 60 min) were used to modify the fibers and replace the traditional mechanical based refining or beating process. The results showed that for enzymatic modified kraft and sulfite pulps, the softness properties were improved by 1 and 2 units, respectively, for each unit of decreased strength properties. To achieve a balance between the tissue properties, the different fiber pulp furnishes that contained 80% of the enzymatically treated kraft pulp and 20% of the sulfite pulp with and without enzymatic treatment, were studied. Overall, the structures made with these mixtures presented softness properties in the commercial range (57.8 to 74.4), improved absorption properties (107 mm to 120 mm of capillary rise), and good strength properties (13.0 to 17.7 N.m/g). This study was conducted in order to adjust the fiber furnishes according to industrial tissue standards, using one Eucalyptus fiber type providing strength and another providing softness.

scholarly journals Computational Simulation Tools to Support the Tissue Paper Furnish Management: Case Studies for the Optimization of Micro/Nano Cellulose Fibers and Polymer-Based Additives

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3982
Author(s):  
Flávia P. Morais ◽  
Ana M. M. S. Carta ◽  
Maria E. Amaral ◽  
Joana M. R. Curto
Keyword(s):  
Case Studies ◽  
Raw Materials ◽  
Computational Simulation ◽  
Cellulose Fibers ◽  
Paper Properties ◽  
Fiber Modification ◽  
Simulation Tools ◽  
Tissue Paper ◽  
Nano Cellulose ◽  
End Use

Tissue paper production frequently combines two main types of raw materials: cellulose fibers from renewable sources and polymer-based additives. The development of premium products with improved properties and functionalities depends on the optimization of both. This work focused on the combination of innovative experimental and computational strategies to optimize furnish. The main goal was to improve the functional properties of the most suitable raw materials for tissue materials and develop new differentiating products with innovative features. The experimental plan included as inputs different fiber mixtures, micro/nano fibrillated cellulose, and biopolymer additives, and enzymatic and mechanical process operations. We present an innovative tissue paper simulator, the SimTissue, that we have developed, to establish the correlations between the tissue paper process inputs and the end-use paper properties. Case studies with industrial interest are presented in which the tissue simulator was used to design tissue paper materials with different fiber mixtures, fiber modification treatments, micro/nano fibrillated cellulose, and biopolymer formulations, and to estimate tissue softness, strength, and absorption properties. The SimTissue was able to predict and optimize a broader range of formulations containing micro/nanocellulose fibers, biopolymer additives, and treated-fiber mixtures, saving laboratory and industrial resources.

scholarly journals Blending impact of hardwood pulps with softwood pulp on tissue paper properties

Wood Research ◽  
2020 ◽  
Vol 65 (3) ◽  
pp. 447-458
Author(s):  
MONIKA STANKOVSKÁ ◽  
MÁRIA FIŠEROVÁ ◽  
JURAJ GIGAC ◽  
ELENA OPÁLENÁ
Keyword(s):  
Paper Properties ◽  
Tissue Paper ◽  
Softwood Pulp

scholarly journals INFLUENCE OF BLEACHED SOFTWOOD AND HARDWOOD KRAFT PULPS ON TISSUE PAPER PROPERTIES

2019 ◽  
Vol 53 (5-6) ◽  
pp. 469-477 ◽  
Author(s):  
MÁRIA FIŠEROVÁ ◽  
◽  
JURAJ GIGAC ◽  
MONIKA STANKOVSKÁ ◽  
ELENA OPÁLENÁ ◽  
...  
Keyword(s):  
Kraft Pulps ◽  
Paper Properties ◽  
Tissue Paper

scholarly journals EFFECT OF ADDITION OF DEINKED PULP TO BLEACHED KRAFT PULP ON TISSUE PAPER PROPERTIES

Wood Research ◽  
2021 ◽  
Vol 66 (3) ◽  
pp. 505-516
Author(s):  
Monika Stankovská ◽  
Mária Fišerová ◽  
Juraj Gigac ◽  
Elena Opálená
Keyword(s):  
Water Absorption ◽  
Kraft Pulp ◽  
Kraft Pulps ◽  
Initial Water ◽  
Paper Properties ◽  
High Brightness ◽  
Tissue Paper ◽  
Tensile Index ◽  
Bleached Kraft Pulp ◽  
Eucalyptus Kraft Pulp

The influence of addition of deinked pulps with low and high brightness to bleached eucalyptus and pine kraft pulps on functional tissue paper properties was studied. Deinked pulps with low and high brightness had some different functional properties. Deinked pulp with high brightness has higher bulk, porosity, water absorption after immersion, initial water absorption, bulk softness as well as brightness. On the contrary, the difference in relative bonded area and porosity e between deinked pulps with low and high brightness was moderate. The mixed pulps laboratory pulp sheets from bleached eucalyptus kraft pulp or bleached pine kraft pulp with addition of 20, 40 and 80% of deinked pulp with low brightness or deinked pulp with high brightness were prepared. The addition of the deinked pulp with high or low brightness to bleached kraft pulp leads to increasing of bulk, bulk softness as well as high water absorption after immersion and initial water absorption. The tensile index rapidly decreased by the addition of deinked pulps with high brightness to bleached eucalyptus and pine kraft pulps. Similarly, the addition of deinked pulp with low brightness to bleached pine kraft pulp led to rapid decreasing of tensile index. On contrary, with the addition of deinked pulp with low brightness to eucalyptus kraft pulp, the decreasing of tensile index was less pronounced. Mixed pulp from bleached eucalyptus kraft pulp with a small content of deinked pulp with low brightness with functional properties suitable for production of tissue papers was found as optimal.

A new perspective on tissue wet strength decay: the real values

TAPPI Journal ◽  
2013 ◽  
Vol 12 (1) ◽  
pp. 9-15 ◽  
Author(s):  
F.S. POTTER ◽  
T.L. WRIGHT ◽  
C. HAGIOPOL ◽  
J.W. JOHNSTON
Keyword(s):  
Decay Rate ◽  
Wet Strength ◽  
Paper Properties ◽  
Tissue Paper ◽  
Physical Testing ◽  
Testing Data ◽  
Experimental Errors ◽  
New Perspective ◽  
The Relationship ◽  
Selection Of

The measurement of two key properties of bath tissue (paper wet strength after 5 s and 5 min of soaking in water) were performed on a broad selection of samples from retail shelves. The importance of the experimental errors and their distribution on the interpretation of the physical testing data is evaluated. Examining the data in this manner allows for a new way to look at the relationship between dry strength, initial wet strength, and the decay rate of the paper. The importance of chemistry is revealed and discussed, giving a new perspective with respect to paper properties and the strength relationships in tissue.

scholarly journals Ecofriendly and innovative processing of hemp hurds fibers for tissue and towel paper

BioResources ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 706-720
Author(s):  
Ved Naithani ◽  
Preeti Tyagi ◽  
Hasan Jameel ◽  
Lucian A. Lucia ◽  
Lokendra Pal
Keyword(s):  
Water Absorption ◽  
Secondary Ion Mass Spectrometry ◽  
Chemical Properties ◽  
Dry Mass ◽  
High Yield ◽  
Pulp Fibers ◽  
Paper Properties ◽  
Hemp Fibers ◽  
Tissue Paper ◽  
Hardwood Pulp

An innovative approach for preparing hemp fibers from hemp hurds for use in tissue and towel grades of paper is described. Hemp hurds are a low value by-product of industrial hemp processing that are generally used for animal bed litter. Tissue paper was fabricated from hemp hurd fibers by following three pulping processes: autohydrolysis (hydrothermal), sodium carbonate-based defibration, and high yield kraft pulping, and benchmarked against hardwood pulp. To meet industrial standards, hardwood and hemp pulp fibers were mixed at a dry mass ratio of 75:25, from which tissue paper sheets were prepared. Desirable tissue paper properties, such as water absorption, burst resistance, softness, and tensile strength (dry and wet), were measured and compared. Characterization of morphological and chemical properties of tissue handsheets was conducted with SEM and time-of-flight-secondary ion mass spectrometry (ToF-SIMS). The combined kraft pulped hardwood and autohydrolyzed hemp pulp fibers displayed improvements in tensile index, burst resistance, and softness of tissue handsheets compared to only kraft hardwood pulp handsheets without adversely impacting water absorption. Hardwood fibers showed a sparse distribution of surface lignin compared to hemp fibers using the same defibration. This technology can lead to a variety of eco-friendly tissue paper products that are not only highly energy efficient, but avoid harsh chemical processing.

SEM Study of Tension Wood Fiber Morphology and its Effect on Paper Properties

1977 ◽  
Vol 35 ◽  
pp. 308-309
Author(s):  
K. W. Robinson
Keyword(s):  
Tension Wood ◽  
Wood Fiber ◽  
Strength Properties ◽  
Fiber Morphology ◽  
Paper Properties ◽  
Pure Cellulose ◽  
Short Rotation ◽  
Hardwood Trees ◽  
Sem Study

Tension wood (TW) is an abnormal tissue of hardwood trees; although it has been isolated from most parts of the tree, it is frequently found on the upper side of branches and leaning stems. TW has been classically associated with geotropic alignment, but more recently it has been associated with fast growth. Paper made from TW is generally lower in strength properties. Consequently, the paper industries' growing dependence on fast growing, short- rotation trees will result in higher amounts of TW in the final product and a corresponding reduction in strength.Relatively few studies have dealt with the role of TW in the structure of paper. It was suggested that the lower strength properties of TW were due to a combination of factors, namely, its unique morphology, compression failures in the cell wall, and lower hemicellulose content. Central to the unique morphology of the TW fiber is the thick gelatinous layer (G-layer) composed almost entirely of pure cellulose.

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