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Furnishing autohydrolyzed poplar weakly alkaline P-RC APMP to make lightweight coated base paper, TAPPI Journal February 2022

ABSTRACT: This work investigated the effects of autohydrolysis pretreatment severity on poplar (Populus tomentosa Carr.) woodchips used to make a type of high-yield pulp (HYP) known as preconditioning followed by refiner chemical treatment, alkaline peroxide mechanical pulp (P-RC APMP). It also investigated the ratios for partially replacing sodium hydroxide (NaOH) with magnesium oxide (MgO) in the high-consistency (HC) retention stage of the P-RC APMP process on the obtained HYP’s properties. The results show that the pretreatment severity of autohydrolysis at combined hydrolysis factor (CHF) = 10.77 and the 50 wt% ratio for partially substituting NaOH with MgO were the optimum conditions for making light-weight coated (LWC) base paper. Compared to the conventional P-RC APMP, the optimized P-RC APMP had similar bulk and higher tensile, burst, and tear indices, as well as opacity, but a slightly lower ISO brightness. When the optimized P-RC APMP and commercial softwood bleached sulfate pulp (SBKP) were blended to make LWC base paper, the most favorable pulp furnish was comprised of 50% optimized P-RC APMP and 50% commercial SBKP. The obtained LWC base paper handsheet had better bulk, and its other properties could also meet the require-ments of LWC base paper.

Editorial: Looking forward, looking back, TAPPI Journal January 2022

ABSTRACT: Much like 2020, 2021 was another year of remarkable highs and lows delivered by the COVID-19 pandemic. Vaccines, variants, and infection surges altered the way we behaved personally and professionally last year. As we move into 2022, we are now grappling with health and business concerns from the omicron variant that has overwhelmed hospitals in some areas and contributed to a global supply chain crisis. The ability to adjust has once again become a key skill in adapting to our shifting “new normal.”

Graphic Packaging International: Safety Never Stops, Paper3

Graphic Packaging International: Safety Never Stops, Paper360º January/February 2022

Going the Distance with Utah PaperBox’s Trim Removal Solution, Paper360º January/February 2022

Going the Distance with Utah PaperBox’s Trim Removal Solution, Paper360º January/February 2022

New Standards in Paper Production Water Use, Paper360º July/August 2022

Chemical Engineers Have a Role in Process Safety, Paper360º July/August 2022

World’s Largest MVR Evaporation Plant for Sulphite Spent Liquor at Sappi Saiccor Pulp Mill, Paper360º July/August 2022

TAPPI Journal Summaries, Paper360º July/August 2022

ASPI News, Paper360º July/August 2022

Editorial: Unlock the gates! TAPPI Journal moves to fully Open Access research for all, TAPPI Journal March 2022

TAPPI and the TAPPI Journal (TJ) Editorial board and staff are pleased to announce that TJ’s content is now immediately open access (OA), with no embargoes. In 2020, the journal had adopted a hybrid OA model wherein its peer-reviewed research was free to TAPPI members for one year and then became free to all on the one-year anniversary of a research paper’s publishing date. Now, research is immediately accessible to all, increasing visibility and engagement for authors and providing an unobstructed view for researchers, students, and other interested parties.