Fibre-fibre bonding and ways to characterize the bond strength

E Retulainen, Kari Ebeling

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Fibre bonds greatly influence the mechanical, optical, electrical and thermal properties of paper. Specific bond strength (SBS) is a parameter to characterize the quality of bonds. There has been no generally accepted method to measure the SBS from paper. In this study eight different methods have been compared. The effect of several variables on SBS has been studied: effect of beating, fibre coarseness and the amount of sheet shrinkage in drying. There was considerable disagreement between studied methods. The sheet structure and bond structure affect in a different way these measurements. The main causes for the different results were 1) the measurement of bonded area 2) the principle of strength measurement (force or energy based) and 3) the mode of loading. The fibre bond is a three dimensional anisotropic structure. Its strength cannot be measured unambiguously. Its strength can be measured only in relation to a definite loading mode.
Original languageEnglish
Pages (from-to)282-288
JournalAppita Journal
Volume46
Issue number4
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

Fingerprint

Fiber bonding
Bond strength (materials)
Fibers
Electric power measurement
Force measurement
Drying
Electric properties
Thermodynamic properties
Optical properties
Mechanical properties

Keywords

  • fibre bonds
  • measurement
  • strength

Cite this

Retulainen, E ; Ebeling, Kari. / Fibre-fibre bonding and ways to characterize the bond strength. In: Appita Journal. 1993 ; Vol. 46, No. 4. pp. 282-288.
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Fibre-fibre bonding and ways to characterize the bond strength. / Retulainen, E; Ebeling, Kari.

In: Appita Journal, Vol. 46, No. 4, 1993, p. 282-288.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Fibre-fibre bonding and ways to characterize the bond strength

AU - Retulainen, E

AU - Ebeling, Kari

PY - 1993

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AB - Fibre bonds greatly influence the mechanical, optical, electrical and thermal properties of paper. Specific bond strength (SBS) is a parameter to characterize the quality of bonds. There has been no generally accepted method to measure the SBS from paper. In this study eight different methods have been compared. The effect of several variables on SBS has been studied: effect of beating, fibre coarseness and the amount of sheet shrinkage in drying. There was considerable disagreement between studied methods. The sheet structure and bond structure affect in a different way these measurements. The main causes for the different results were 1) the measurement of bonded area 2) the principle of strength measurement (force or energy based) and 3) the mode of loading. The fibre bond is a three dimensional anisotropic structure. Its strength cannot be measured unambiguously. Its strength can be measured only in relation to a definite loading mode.

KW - fibre bonds

KW - measurement

KW - strength

M3 - Article

VL - 46

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JO - Appita Journal

JF - Appita Journal

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