PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 2, Number 2, 2016
COATING Specular gloss versus surface topography for oil-filled nanoparticle coatings on paper, Pieter Samyn, Jürgen Van Erps, Hugo Thienpont, Color Research & Application , Vol.41, No.6. The appearance or printing quality of paper surfaces is mostly characterised by their glossiness, measured with a glossmeter as specular reflectance. The gloss properties of a base paper substrate can be improved after application of a poly(styrene-co-maleimide) nanoparticle coating under pure conditions or in the presence of different vegetable oils. The specular gloss properties of 11 different nanoparticle paper coatings have been determined under 75° and 85° incident light angles; the gloss properties for the different coatings have been further related to the surface topography. FILLER / PIGMENT Coaggregation of mineral filler particles and starch granules as a basis for improving filler-fiber interaction in paper production, Ting Li, Jun Fan, Wensen Chen, Jiayan Shu, Xueren Qian, Haifeng Wei, Qingwen Wang, Jing Shen, Carbohydrate Polymers , Vol.149. The concept of coaggregation of mineral filler particles and starch granules for improving filler-fibre interaction in paper-based cellulosic networks is presented. Coaggregation of precipitated calcium carbonate filler particles and uncooked, unmodified corn starch granules by cationic polyacrylamide in combination with bentonite prior to addition to cellulosic fibre slurry delivered enhanced filler bondability with cellulosic fibres. Surface modification of PCC with guar gum using organic titanium ionic crosslinking agent and its application as papermaking filler, Wei Xie, Zhanqian Song, Zhenhua Liu, Xueren Qian, Carbohydrate Polymers , Vol.150. Utilising the principles of guar gum (GG) gelation and crosslinking, a novel modified precipitated calcium carbonate (MPCC) papermaking filler was prepared by using organic titanium (OT) ionic crosslinking agent. Handsheet testing results showed that strength properties of handsheets were obviously improved when using MPCC as papermaking filler. This research suggests that the GG modified PCC by using OT as crosslinking agent can be used to manufacture high filler content paper products. MOULDED PULP Production planning in the molded pulp packaging industry, Karim Y.P. Martíneza, Eli A.V. Tosob, Reinaldo Morabitoa, Computers & Industrial Engineering , Vol.98, August 2016. Production planning in moulded pulp packaging companies involves decisions about setting up appropriately the production process to meet the demands of different products. This production process comprises stages such as blending, moulding and drying, and the major challenges for the production planning occur in the moulding stage, where the mix of products manufactured simultaneously depends on the combination of moulds attached to the moulding machine, called moulding pattern. In this study we propose a novel optimisation approach to deal with the problem of deciding which moulding patterns should be used, how long each pattern should be used and the production sequence that should be operated.
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Technical Abstracts
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