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Journal articles
Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier,TAPPI Journal December 2024
Author: Peter W. Hart | TAPPI J. 10(9): 37(2011) - ABSTRACT: A modified kraft pulping process has been developed that successfully breaks the traditional hard-wood kraft pulp yield barrier. The process produces fully bleached, high brightness hardwood kraft pulp with a yield of greater than 53% on wood. Details of the development and processing steps, along with various recovery cycle impacts, are discussed.
Journal articles
Infrared Microspectroscopy: Analysis of Multilayer Films, Co
Infrared Microspectroscopy: Analysis of Multilayer Films, Contaminants and Inclusions, 1990 Polymers, Laminations & Coatings Conference Proceedings
Journal articles
Hot Soft Calendering: Effect on Surface Finish and Printabil
Hot Soft Calendering: Effect on Surface Finish and Printability of Paper, 1990 International Printing & Graphic Arts Conference Proceedings
Journal articles
Magazine articles
Application of fuzzy TOPSIS in the Analyze phase of the DMAIC cycle to aid decision-making, TAPPI Journal April 2020
ABSTRACT: This paper reports the use of multicriteria analysis in the Analyze phase of the DMAIC (Define-Measure-Analyze-Improve-Control) cycle for continuous improvement. The research was carried out in a tissue paper factory located in southern Brazil. A sample of 64 parts of 16 different reels of recycled paper was used. A problem regarding paper quality variability was detected, presenting a scrap index ranging between 9% and 23%, compromising machine productivity and product sales. This motivated the implementation of a structured project supported by the application of the DMAIC cycle. The project team (machine operators, maintenance staff, supervisor, and data analyst) defined the evaluation criteria and determined the control intervals and their equivalence with linguistic variables to support the necessary evaluations for the application of fuzzy TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). The criteria were C1-Longitudinal Strength (Kgf), C2-Longitudinal Elongation (mm), C3-Cross-strength (kgf), C4-Cross-elongation (mm), C5-Weight (g/m²), and C6-Humidity (%). The results showed that samples with the same ranking had the lowest scrap indexes in the subsequent process. Also, the criterion C5 had a more significant impact on the quality of the product than the other criteria, which was determined from the DMAIC sequence. Improvements related to C5 should be prioritized. The fuzzy TOPSIS method presented is a flexible tool, adapting itself to the solution of the problem and contributing to the decision-making process.
Journal articles
Magazine articles
Guest Editorial: Still working (overtime): Life-saving nonwovens and continued innovation, TAPPI Journal August 2021
ABSTRACT: Recently, the United States federal government has recommended the need for a booster shot to combat COVID-19, highlighting the highly contagious nature of its Delta variant. This variant is surging in countries as far apart as Thailand, Brazil, and the United States. While the availability of the vaccine is not an issue in the United States, African, Latin American, and South Asian countries are in dire need of the vaccine. This scenario necessitates the need for continued safety measures. Among the recommended safety measures, use of face masks has been proven to be effective. Recent analysis showed that two-thirds of the 32 states in the United States with face mask mandates found them helpful for lowering infection rates.
Journal articles
Characterizing Hot-Tack Differences in Hot-Melt Adhesives Us
Characterizing Hot-Tack Differences in Hot-Melt Adhesives Using DMTA, 1991 Polymers, Laminations & Coatings Conference Proceedings
Journal articles
Historical and Recent Attempts to Solve the Uneven Microwave
Historical and Recent Attempts to Solve the Uneven Microwave Heating Problem with Packaging, 1991 Polymers, Laminations & Coatings Conference Proceedings
Journal articles
In-Line Shear Viscosity Measurements for the Gear Pump Assis
In-Line Shear Viscosity Measurements for the Gear Pump Assisted Extrusion Process, 1992 Polymers, Laminations & Coatings Conference Proceedings
Journal articles
Identification of the Source and Chemical Identity of Chromo
Identification of the Source and Chemical Identity of Chromophores Present in Polyethylene Lamination, 1993 Polymers, Laminations & Coatings Conference Proceedings
Journal articles
Wetting Tension Measurements on Corona-Treated Polymer Films
Wetting Tension Measurements on Corona-Treated Polymer Films, 1994 Polymers, Laminations & Coating Conference Proceedings