PAPER making! g! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® Volume 11, Number 3, 2025
molded packaging applications through carbonate and bicarbonate pulping, as well as oxygen delignification. Furthermore, it examines mild refining and cationic starch treatments to balance strength and drainage properties during the molding process. Results show that carbonate and bicarbonate pulping of sugarcane bagasse achieved yields of approximately 72%, while oxygen delignification reduced yield by 2% but improves mechanical performance by 25%. Mild refining decreased dryness by 10%, whereas adding 1% cationic starch enhanced dryness by 9% and increased mechanical strength by up to 60%. These alternative fibers from sugarcane bagasse present a viable solution for replacing SUP packaging, helping to mitigate pollution and reduce waste accumulation. “Manufacturing of Form-molded Pulp Products (FMPPs) in the Papermaking Industry - A Review”, Dariusz Danielewicz, BioResources , 2025, 20(2), p5114. The article reviews the history of the production of form-molded pulp products (FMPPs) and the current value of their production. The discussion includes fibrous intermediates and additional materials used to produce these products, the categories and properties of FMPPs, and principles of operation of machines used to produce them. It compares vacuum and overpressure molding techniques, and current and future trends in FMPPs production. FMPPs are produced from fibrous secondary and primary papermaking pulps, as well as other waste intermediates, the use of which can contribute to reducing the costs of producing these products. It was found that over the past dozen or so years, the state of knowledge on improving the strength properties of FMPPs and the use of biodegradable aids to improve their properties, including barrier properties, has significantly expanded. Drawing not yet published in review articles, showing devices for producing FMPPs using hydraulic molding and pressurized air molding methods are presented in a descriptive and comparative form used in the industry at the turn of the 1950s and 1960s. Possible future directions are considered for FMPPs developments in technology and further commercialization. NANO-SCIENCE “Enhancing papermaking with nanocellulose and chitosan: Synergistic approaches for eco-friendly production”, Ng Yie Ling, R.A. Ilyas, Rafidah Jalil, Rushdan Ibrahim, H.S.N. Hawanis, H.A.A. Azriena, Rohah Abdul Majid, N.H.M. Hassan, M.S.N. Atikah & Abu Hassan Nordin, Sustainable Materials and Technologies , 43, April 2025, e01252. The expanding demand for paper production has significantly contributed to the global economy, but it also presents substantial environmental challenges due to the diverse waste streams generated by the industry. To address these issues, eco-friendly biomaterials or also known as biopolymers are increasingly advocated in the papermaking process. The application of biopolymers in pulp and paper industries is focusing in improving the paper products performance especially for packaging paper products. Two promising sustainable materials are nanocellulose and chitosan. Nanocellulose, known for its abundance and biodegradability, serves as an effective additive in paper production, enhancing strength, retention, filtration, and coating properties. Chitosan, derived from chitin, the second most abundant polysaccharide in nature, is a renewable, non-toxic biomaterial with high cationic charge density, antibacterial properties, and excellent biocompatibility with cellulose. Its integration into papermaking enhances both dry and wet strength by forming hydrogen bonds with nanocellulose, thus improving the physical, mechanical, thermal, and antimicrobial properties of paper. The synergy between nanocellulose and chitosan not only enhances the overall quality of the paper but also supports the production of various types of paper, including packaging, printing, speciality, and textile paper. This approach underscores the role of sustainable biomaterials in innovating the papermaking industry while reducing its environmental footprint.
Technical Abstracts
Page 6 of 11
Made with FlippingBook flipbook maker