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Effects of Base Paper Properties and the Composition of Adhesives on the Physical Properties of Multilayered Paper  

Kim, Tae-Young (The Technology Research Institute of KOMSCO)
Jung, Yang-Jin (The Technology Research Institute of KOMSCO)
Jang, Yoon-Jin (The Technology Research Institute of KOMSCO)
Yoon, June-Hee (The Technology Research Institute of KOMSCO)
Heo, Yong-Dae (The Technology Research Institute of KOMSCO)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.40, no.4, 2008 , pp. 34-42 More about this Journal
Abstract
Generally, paper multilayering was performed before wet pressing process. However, sheets whose characteristics are different could be put together at the dry state by adhesives for the specialty paper products. In this paper, potential adhesives such as PVAc, oxidised starch, latex, and PVA were chosen and multilayering of several sheets was performed in laboratory scale. The effects of base paper properties and the composition of adhesives on the physical properties of multilayering paper were investigated. Physical properties such as bonding strength and stiffness were measured. For the practical reasons, mill trial was also executed. According to the result of laboratory tests and mill trial test, the physical properties of multilayered paper were greatly affected by the composition of adhesives and it was found that PVAc showed the best performance in all its aspects among four adhesives. Oxidised starch had an advantage of high stiffness and PVA gave high bonding strength to the multilayered paper. And it was also found that the properties of base paper showed the great influences not only on multilayering process, but also on the physical properties of the multilayered paper.
Keywords
multilayering; coherence; bonding strength; PVAc; PVA; starch; latex;
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