Studies on the fold-ability of coated paperboard (I) Influence of latex on fold-ability during creasing/folding coated paperboard

Chang-Keun Kim; Won-Seok Lim; Yong Kyu Lee

Journal of Industrial and Engineering Chemistry, Vol.16, No.5, 842-847, September, 2010

DOI10.1016/j.jiec.2010.05.001 Export Citation

Studies on the fold-ability of coated paperboard (I) Influence of latex on fold-ability during creasing/folding coated paperboard

Chang-Keun Kim^†, Won-Seok Lim¹, and Yong Kyu Lee¹

Chang-Gang Paper Research Institute, Kangwon National University, Chuncheon, Kangwon 200-701, Republic of Korea
¹Department of Paper Science & Engineering, Kangwon National University, Chuncheon, Kangwon 200-701, Republic of Korea

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Papers consist more than 50% of the packaging material. Cartons which have been used for high quality hygiene packaging such as confections and cosmetics aremade from coated paperboard. Carton-making process consists of printing on coated paperboard, creasing and then folding it. A frequently occurred trouble in a carton-making process is cracking along a creasing rule during creasing by high mechanical pressure. In order to reduce cracking and improve fold-ability of coated paperboard, this study elucidated the factors affecting cracking in a coated layer which absorbs most of elongation force applied on the surface layer of coated paperboard. Coated paperboard produced with latex having low Tg and small particle size showed good printability, flexible coated layer and consequently reduced cracking due to its good film formability. When the coated paperboard was folded in machine direction, the foldability was poor because of fiber orientation.

Keywords:Fold-ability;Creasing;Folding;Groove;Creasing rule;Roughness;Paper gloss;Ink gloss;SNAP;Ink set-off;Dry pick;Wet pick

[References]

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[1] Kainulainen M, Finish pulp and paper research institute. Personal communication.

[2] Barbier C, Lennart PL, O¨ stlund S, Nordic Pulp and Paper Research Journal., 17(1), 34 (2002)

[3] Sappi Fine Paper Europe, ‘‘Folding and Creasing . Finishing of Coated Papers after Sheet-Fed Offset Printing’’, www.sappi.com/Knowledgebank.

[4] Barbier C, Lennart PL, O¨ stlund S, Eklund J, Tappi Preprints 2003 International Paper Physics Conference, September 7.11, 2003, Victoria, BC, Canada (2003)

[5] Jopson RN, Towers K, 1995 Coating Conference, 459 (1995)

[6] Autopatens, ‘102’Series, Bobst, Lausanne (1993)

[7] Lee DI, Tappi 1982 Coating Conference Proceedings, Tappi Press, Atlanta, 125 (1982)

[8] Lee DI, Pigment Coating and Surface Sizing of Paper, Book 11, Papermaking Science and Technology, 211 (1999)

[9] Procter AR, Hoover JF, 1990 Coating Binder Short Course, Tappi Press Atlanta, 93 (1990)

[10] Jamel A, ‘‘Coated paper: How to avoid cracking at the fold’’ September 2002 Tappi Solutions, 59

[11] Hendershot RE, Klun RT, 1990 Coating BinderCourse, Tappi Press. Atlanta, 81 (1990)

[12] Joyce M, Hagen R, De Ruvo A, Journal of Coatings Technology., 69, 53 (1997)

[13] Mohawk Paper Mills, ‘‘Die-cutting, scoring and folding tips’’ www.mohawkpaper.com

[14] Christer F, Mats F, Pia W, Tappi Journal 75 (April (4)) (1992)

[15] StoraEnso, ‘‘Paperboard Guide . 6. Converting and Finishing’’ www.storaenso.com.

[16] Barbier C, Lennart PL, O¨ stlund S, Composite Structures., 67(4), 383 (2005)

[17] Barbier C, Lennart PL, O¨ stlund S, ‘‘On the effect of high anisotropy at folding of coated papers’’, Report KTH, 6(14), 374 (2004)

[18] Barbier C, Lennart PL, O¨ stlund S, ‘‘Manufacturing of paperboard and corrugated board packaging’’, Report KTH, www.hallf.kth.se. (2004)

[19] Van Gilder RL, Purfeerst RD, Tappi 1994 Coating Conference Proceedings, Tappi Press, Atlanta; Tappi Journal, 77(5), 230 (1994)

[20] Riikka J, Seppo M, Paper and Paperboard Converting, Book 12, Papermaking Science and Technology, Tappi Press, 228 (1999)

[21] Franklin AT, Printing Technology., 14(1), 21 (1970)