Search

Rheological characterization of tack and viscoelasticity of compositions of crepe coating used in the Yankee dryer, TAPPI Journal November 2019

ABSTRACT: The vast majority of tissue production uses creping to achieve the required set of properties on the base sheet. The Yankee coating helps to develop the desired crepe that in turn determines properties such as bulk and softness. The adhesion of the sheet to the Yankee surface is a very important characteristic to consider in achieving the desired crepe. The coating mix usually consists of the adhesive, modifier, and release. A good combination of these components is essential to achieving the desired properties of the tissue or towel, which often are determined by trials on the machine that can be time consuming and lead to costly rejects. In this paper, five compo-sitions of an industrial Yankee coating adhesive, modifier, and release were examined rheologically. The weight ratio of the adhesive was kept constant at 30% in all five compositions and the modifier and release ratios were varied. The normal force and work done by the different compositions have been shown at various temperatures simulating that of the Yankee surface, and the oscillatory test was carried out to explain the linear and nonlinear viscoelastic characteristic of the optimal coating composition.

A brominated methylethylhydantoin slimicide in a tissue mill, TAPPI JOURNAL, May 2003, Vol. 2(5) (179KB)

A brominated methylethylhydantoin slimicide in a tissue mill, TAPPI JOURNAL, May 2003, Vol. 2(5) (179KB)

A study of softness standard samples using a tissue softness analyzer and hand-felt panels, TAPPI Journal February 2025

Pump Metering Accuracy Contributes to Product Excellence at Historic Paper Mill, Paper360º July/August 2018

Pump Metering Accuracy Contributes to Product Excellence at Historic Paper Mill, Paper360º July/August 2018

Fapajal Tissue: Old, New & Customer-Centric, Paper360º March

Fapajal Tissue: Old, New & Customer-Centric, Paper360º March/April 2018

Sustainability as Business Leverage, Paper360º March/April 2

Sustainability as Business Leverage, Paper360º March/April 2018

A study of the softness of household tissues using a tissue softness analyzer and hand-felt panels, TAPPI Journal March 2019

ABSTRACT: This study applied the reciprocal matrix approach to deduce the correlation between hand-felt (HF) and tissue softness analyzer (TSA) instrumental measurements of tissue softness. The research was conducted in three phases, which are discussed separately. In the phase one study, results indicated that systematic collection of samples and preparation of test specimens were the foundation of successful tests. TSA-HF and tensile strength exhibited a strong negative correlation. In the future, same-unit physical properties can provide a basis for discuss-ing the commonality and complementary natures of hand-felt and TSA softness measurements. In phase two, through the reciprocal matrix approach, subjective softness assessments performed by humans were reliably quan-tified. The quantified values were further applied to a statistical analysis using the t-test to distinguish and train pro-fessional panelists. In phase three of HF panel test results, all independent panels were compared to one another under a uniform scale established by four standard samples. The calibrated HF panel values were incorporated with TSA-HF results to establish technical curves between the softness and tensile strength, which were helpful for onsite workers to carry out process controls.

Global or Local: Does Mill Location Make a Difference?, Paper360º March/April 2019

Global or Local: Does Mill Location Make a Difference?, Paper360º March/April 2019

TAPPI Journal Summaries, Paper360 May/June 2019

TAPPI Journal Summaries, Paper360 May/June 2019

TAPPI Journal Summaries, Paper360º November/December 2019

TAPPI Journal Summaries, Paper360º November/December 2019