Details:
Summary:
The major functions of a package are to protect, contain, and promote products. Paperboard � �can � �be converted into � �packages � �by relatively � �straightforward operations � �such as cutting, folding, and gluing. �To make the paperboard packages appealing for consumers, the fold lines must be neat and undamaged. However, a difficulty in paperboard converting is the cracking of paperboards during � �folding. � �Cracked � �folds � �render � �printed � �packages less appealing to consumers. The purpose of this study is to evaluate creasing and folding performance of different grades of printed paperboards. �Paperboards printed with water-based flexo ink, oil-based offset ink, and pigment-based ink-jet ink were tested. Three grades of solid bleached board (SBS), 10-point, 12-point, and 13-point, were used in the test. �A �flatbed �sample �maker �from �Gerber �was employed �to �perform �die-cutting �and creasing. �Creasing is carried out with creasing rules, which have rounded ends. � Different �creasing �settings �(with a scale ranging from numbers 17, 33, 42, and 50) were experimentally �applied to determine �the �creasing �property of �tested �paperboards. �It was found that the creasing settings No. 33 and No. 42 creates better and well-defined folding lines during the subsequent folding, especially with CD crease. The crease rule used in this study works well with the 13-point paperboard. �It forms great shape of crease bead, creates thin, multilayer structure for either CD or MD, resulting in clear defined fold lines.