Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard

This work deals with time-dependent creasing characteristics of coated paperboard. The knowledge of dynamic bending moment (resistance) acting on a hinge which is folded onto a creased line, is important in order to adjust a few of boxing condition. The correlation between the dynamic bending resist...

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Autores principales:	Shigeru NAGASAWA, Shinya OZAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	paperboard bending folding velocity relaxation creep Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/0b63e666ceb14103ae8c0e1bc1a801f7
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id	oai:doaj.org-article:0b63e666ceb14103ae8c0e1bc1a801f7
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spelling	oai:doaj.org-article:0b63e666ceb14103ae8c0e1bc1a801f72021-11-26T06:51:31ZEffect of bending velocity on time-dependent release behavior of creased white-coated paperboard2187-974510.1299/mej.16-00182https://doaj.org/article/0b63e666ceb14103ae8c0e1bc1a801f72016-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/3/3_16-00182/_pdf/-char/enhttps://doaj.org/toc/2187-9745This work deals with time-dependent creasing characteristics of coated paperboard. The knowledge of dynamic bending moment (resistance) acting on a hinge which is folded onto a creased line, is important in order to adjust a few of boxing condition. The correlation between the dynamic bending resistance and several primary problems such as the time-dependent residual strains on actual processing phenomenon was not sufficiently discussed in the past. It is difficult to estimate various time-dependent responses from a quasi-static initial stiffness of a creased part, such as the maximum peak bending moment and the gradient of bending moment. Therefore, a prototype Crease Stress Tester (CST) has been applied to seek the dynamic bending moment and its residual deformation. In order to reveal the relaxation characteristics of bending angle during the folding and returning back motion from a tracking angle of 90°, a white-coated paperboard of 0.3 mm thickness was scored with a creaser knife and a grooved face counter plate under a specified feed velocity, and then the bending and release test was carried out up to the second round folding under a couple of indentation depth of crease forming (nominal shear strain). Through this work, the followings were found: (1) The release response of folded angle during returning back was characterized and approximated by a logarithmic function of elapsed time; (2) The release of folded angle depends on the bending rotation velocity.Shigeru NAGASAWAShinya OZAWAThe Japan Society of Mechanical EngineersarticlepaperboardbendingfoldingvelocityrelaxationcreepMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 3, Pp 16-00182-16-00182 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	paperboard bending folding velocity relaxation creep Mechanical engineering and machinery TJ1-1570
spellingShingle	paperboard bending folding velocity relaxation creep Mechanical engineering and machinery TJ1-1570 Shigeru NAGASAWA Shinya OZAWA Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
description	This work deals with time-dependent creasing characteristics of coated paperboard. The knowledge of dynamic bending moment (resistance) acting on a hinge which is folded onto a creased line, is important in order to adjust a few of boxing condition. The correlation between the dynamic bending resistance and several primary problems such as the time-dependent residual strains on actual processing phenomenon was not sufficiently discussed in the past. It is difficult to estimate various time-dependent responses from a quasi-static initial stiffness of a creased part, such as the maximum peak bending moment and the gradient of bending moment. Therefore, a prototype Crease Stress Tester (CST) has been applied to seek the dynamic bending moment and its residual deformation. In order to reveal the relaxation characteristics of bending angle during the folding and returning back motion from a tracking angle of 90°, a white-coated paperboard of 0.3 mm thickness was scored with a creaser knife and a grooved face counter plate under a specified feed velocity, and then the bending and release test was carried out up to the second round folding under a couple of indentation depth of crease forming (nominal shear strain). Through this work, the followings were found: (1) The release response of folded angle during returning back was characterized and approximated by a logarithmic function of elapsed time; (2) The release of folded angle depends on the bending rotation velocity.
format	article
author	Shigeru NAGASAWA Shinya OZAWA
author_facet	Shigeru NAGASAWA Shinya OZAWA
author_sort	Shigeru NAGASAWA
title	Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
title_short	Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
title_full	Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
title_fullStr	Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
title_full_unstemmed	Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
title_sort	effect of bending velocity on time-dependent release behavior of creased white-coated paperboard
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/0b63e666ceb14103ae8c0e1bc1a801f7
work_keys_str_mv	AT shigerunagasawa effectofbendingvelocityontimedependentreleasebehaviorofcreasedwhitecoatedpaperboard AT shinyaozawa effectofbendingvelocityontimedependentreleasebehaviorofcreasedwhitecoatedpaperboard
_version_	1718409700132782080

Effect of bending velocity on time-dependent release behavior of creased white-coated paperboard

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