Density Decreaser for Paper-MUSCUT Series-

Tomoda, Yuichi; Tanaka, Takashi; Mukougawa, Youichi

doi:10.2524/jtappij.60.1161

Cited by 8 publications

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“…Bulk is defined as the inverse of density; bulkier paper indicates thicker paper in a given area. In the latter approach, the addition of mechanical pulp, especially chemi-thermo-mechanical pulp (CTMP) (Nam et al 2007;Gao et al 2008;Ono et al 2008;Chen et al 2013) or the utilization of bulking agents, such as surfactants (Ikeda et al 2003;Sone et al 2005;Tomoda et al 2006;Takashi 2007;Ono et al 2008;Clayton 2010;Campbell and O'Toole 2010;Nam et al 2014a,b), are commonly used to reduce the consumption of pulp fiber during papermaking. In addition, control of the refining, drainage, and pressing processes improves paper bulk (Eber and Janda 1992;Sung and Keller 2009;Sousa et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of Alkali Swelling and Beating Treatments on Properties of Kraft Pulp Fibers

Choi¹,

Kim²,

Cho³

2016

BioResources

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Three alkali swelling methods were used to treat two kinds of kraft pulp fibers. The morphological and chemical properties of the treated fibers were elucidated in terms of alkali concentration, with the aim of developing bulky paper and conserving wood resources. The effects of beating before and after alkali swelling were examined. The water retention value of fibers increased when higher concentrations of NaOH were used for swelling. Alkali swelling increased fiber width, while fiber length decreased. With increasing NaOH concentration, fibers became curled or kinked; the crystalline structure changed from cellulose I to cellulose II, and the crystalline index decreased. Beating before and after the alkali swelling affected the swelling behavior of kraft pulps, but there was no distinct influence on the crystalline structure. The beating treatment before alkali swelling improved the alkali swelling of fiber. However, beating after the alkali treatment diminished the alkali swelling effects. In addition, the beating after alkali swelling straightened the curled fibers.

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Section: Introductionmentioning

confidence: 99%

Effects of Alkali Swelling and Beating Treatments on Properties of Kraft Pulp Fibers

Choi¹,

Kim²,

Cho³

2016

BioResources

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Manufacture of high bulk paper using alkali swollen kraft pulp

Choi

Kim

Cho

2018

Nordic Pulp &Amp; Paper Research Journal

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Abstract Effects of alkali swelling of kraft pulp fibers and the order of alkali swelling and beating treatments on paper bulk and paper strength were evaluated in terms of NaOH concentration in order to produce high bulk sheet (i. e., high porous and low density sheet). Effects of replacement of part of furnish with the alkali swollen pulp on paper properties were also investigated. It was found that alkali swelling of pulp fiber can increase the bulk of handsheet. NaOH concentration and beating treatment influenced paper bulk and paper strength. Alkali swollen pulp without beating showed the highest handsheet bulk. The paper bulk of alkali swollen pulp with pre-beating was higher than that with post-beating. Paper strength decreased with increasing the bulk of handsheet. In addition, replacement of part of furnish with alkali swollen pulps increased paper bulk, adversely decreasing paper strength. The highest improvement in paper bulk was achieved with the addition of alkali swollen SwBKP without beating.

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Effect of chemical additives on softness components of hygiene paper

Park

Melani

Lee

et al. 2019

Nordic Pulp &Amp; Paper Research Journal

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Chemical additives are used singly or in combination to impart functionality to hygiene paper (suggested). In particular, in the hygiene paper making process, dry strength agent, wet strength agent, softener, and other are widely used. The effects of chemical additives on the softness components were evaluated. In the case of surface softness, there was no change in MMD according to the addition of dry and wet strength agents. The MMD (mean deviation from the average friction of coefficient) was decreased by adding a softener, which is the purpose of its addition to the hygiene paper making process. The softness and wet strength were improved when the wet strength agent was added before the softener. In addition, lotion treatment was applied to the surface of tissue paper. The surface softness component of non-silicone-based lotion was similar or improved, which may overcome the problems of silicon-based lotion.

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Density Decreaser for Paper-MUSCUT Series-

Cited by 8 publications

References 0 publications

Effects of Alkali Swelling and Beating Treatments on Properties of Kraft Pulp Fibers

Effects of Alkali Swelling and Beating Treatments on Properties of Kraft Pulp Fibers

Manufacture of high bulk paper using alkali swollen kraft pulp

Effect of chemical additives on softness components of hygiene paper

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