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Torkningens inverkan på pappers krypegenskaper

Nagel, Miklós (2001) VSM820
Structural Mechanics
Mechanical Engineering
Abstract
A low creep rate and a long lifetime are important mechanical properties for corrugated board and its constituent’s linerboard and fluting. These properties ensure that the package protects the goods during the entire duration of transport and storage.

This study involves several creep and tensile tests of linerboard in the machine direction (MD). The objective is to investigate how free or restrained drying in the cross machine direction (CD) affects the creep properties of the paper in MD. The time to failure of paper when loaded by a constant load in MD increases if the paper is dried free in CD rather than restrained. Short term ramp load testing gives a different response. Restrained compared to free drying in CD gives unchanged... (More)
A low creep rate and a long lifetime are important mechanical properties for corrugated board and its constituent’s linerboard and fluting. These properties ensure that the package protects the goods during the entire duration of transport and storage.

This study involves several creep and tensile tests of linerboard in the machine direction (MD). The objective is to investigate how free or restrained drying in the cross machine direction (CD) affects the creep properties of the paper in MD. The time to failure of paper when loaded by a constant load in MD increases if the paper is dried free in CD rather than restrained. Short term ramp load testing gives a different response. Restrained compared to free drying in CD gives unchanged mechanical properties in MD and improved properties in CD regarding tensile stiffness, tensile strength and break strain. Creep tests in MD show on the other hand, besides increased lifetime (the time to break), that creep strain in CD is higher if the paper is restrained dried rather than free dried in CD. This is a new discovery and it might explain for example the mechanisms behind the mechano-sorptive effect. (Less)
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author
Nagel, Miklós
supervisor
organization
course
VSM820
year
type
H3 - Professional qualifications (4 Years - )
subject
report number
TVSM-5106
ISSN
0281-6679
language
Swedish
id
3566638
date added to LUP
2013-08-05 15:58:57
date last changed
2013-10-01 18:07:41
@misc{3566638,
  abstract     = {A low creep rate and a long lifetime are important mechanical properties for corrugated board and its constituent’s linerboard and fluting. These properties ensure that the package protects the goods during the entire duration of transport and storage. 
 
This study involves several creep and tensile tests of linerboard in the machine direction (MD). The objective is to investigate how free or restrained drying in the cross machine direction (CD) affects the creep properties of the paper in MD. The time to failure of paper when loaded by a constant load in MD increases if the paper is dried free in CD rather than restrained. Short term ramp load testing gives a different response. Restrained compared to free drying in CD gives unchanged mechanical properties in MD and improved properties in CD regarding tensile stiffness, tensile strength and break strain. Creep tests in MD show on the other hand, besides increased lifetime (the time to break), that creep strain in CD is higher if the paper is restrained dried rather than free dried in CD. This is a new discovery and it might explain for example the mechanisms behind the mechano-sorptive effect.},
  author       = {Nagel, Miklós},
  issn         = {0281-6679},
  language     = {swe},
  note         = {Student Paper},
  title        = {Torkningens inverkan på pappers krypegenskaper},
  year         = {2001},
}