Influence of surface treatments on the mechanical strength of hotmelt adhesive joints made of cartonboards

Christer Korin, Rauni Seppänen, Mika Vähä-Nissi, Nils Hallbäck

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The influence of surface treatments including pigment coating, surface sizing and calendering on the mechanical strength of hotmelt adhesive joints in pilot made cartonboards was studied. The mechanical strength of the joints was investigated using the Y-peel test device at 23°C and 50% relative humidity. Some of the samples were investigated with respect to the failure mode by scanning electron microscopy. The surfaces were characterized in terms of surface roughness, surface chemical composition, and adhesion behaviour. A strong adhesive bond displayed fibre tear. In addition to fibre tear, interfacial failure, i.e., failure between the cartonboard and the adhesive, was the main reason for fracture in the bonded assembly. The most important factor controlling the integrity of adhesive joints seemed to be the real contact area. The adhesive joints showed significantly higher strength when the hotmelt adhesive was first applied onto the rougher cartonboard of the assembly and then the smoother cartonboard was pressed on the adhesive than vice versa. The surface roughness of cartonboards mainly depended on whether the surface was pigment coated or not. Calendering displayed only a minor effect. No clear influence of surface chemical composition of the cartonboards on the adhesive joint strength was found due to the fact that changes in surface chemistry in this study also led to changes in surface roughness. The strongest adhesive joint was created between two medium-rough and surface-sized cartonboards
Original languageEnglish
Pages (from-to)2339 - 2356
JournalJournal of Adhesion Science and Technology
Volume26
Issue number20-21
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Adhesive joints
surface treatment
adhesives
Strength of materials
Surface treatment
Adhesives
Calendering
Surface roughness
Pigments
surface roughness
pigments
Fibers
chemical composition
assembly
Surface chemistry
Chemical analysis
Failure modes
Atmospheric humidity
fibers
Adhesion

Keywords

  • Cartonboard
  • hotmelt adhesive
  • mechanical strength
  • Y-peel test
  • surface treatment
  • surface roughness
  • surface chemistry

Cite this

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title = "Influence of surface treatments on the mechanical strength of hotmelt adhesive joints made of cartonboards",
abstract = "The influence of surface treatments including pigment coating, surface sizing and calendering on the mechanical strength of hotmelt adhesive joints in pilot made cartonboards was studied. The mechanical strength of the joints was investigated using the Y-peel test device at 23°C and 50{\%} relative humidity. Some of the samples were investigated with respect to the failure mode by scanning electron microscopy. The surfaces were characterized in terms of surface roughness, surface chemical composition, and adhesion behaviour. A strong adhesive bond displayed fibre tear. In addition to fibre tear, interfacial failure, i.e., failure between the cartonboard and the adhesive, was the main reason for fracture in the bonded assembly. The most important factor controlling the integrity of adhesive joints seemed to be the real contact area. The adhesive joints showed significantly higher strength when the hotmelt adhesive was first applied onto the rougher cartonboard of the assembly and then the smoother cartonboard was pressed on the adhesive than vice versa. The surface roughness of cartonboards mainly depended on whether the surface was pigment coated or not. Calendering displayed only a minor effect. No clear influence of surface chemical composition of the cartonboards on the adhesive joint strength was found due to the fact that changes in surface chemistry in this study also led to changes in surface roughness. The strongest adhesive joint was created between two medium-rough and surface-sized cartonboards",
keywords = "Cartonboard, hotmelt adhesive, mechanical strength, Y-peel test, surface treatment, surface roughness, surface chemistry",
author = "Christer Korin and Rauni Sepp{\"a}nen and Mika V{\"a}h{\"a}-Nissi and Nils Hallb{\"a}ck",
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Influence of surface treatments on the mechanical strength of hotmelt adhesive joints made of cartonboards. / Korin, Christer; Seppänen, Rauni; Vähä-Nissi, Mika; Hallbäck, Nils.

In: Journal of Adhesion Science and Technology, Vol. 26, No. 20-21, 2012, p. 2339 - 2356.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Influence of surface treatments on the mechanical strength of hotmelt adhesive joints made of cartonboards

AU - Korin, Christer

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AU - Vähä-Nissi, Mika

AU - Hallbäck, Nils

PY - 2012

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N2 - The influence of surface treatments including pigment coating, surface sizing and calendering on the mechanical strength of hotmelt adhesive joints in pilot made cartonboards was studied. The mechanical strength of the joints was investigated using the Y-peel test device at 23°C and 50% relative humidity. Some of the samples were investigated with respect to the failure mode by scanning electron microscopy. The surfaces were characterized in terms of surface roughness, surface chemical composition, and adhesion behaviour. A strong adhesive bond displayed fibre tear. In addition to fibre tear, interfacial failure, i.e., failure between the cartonboard and the adhesive, was the main reason for fracture in the bonded assembly. The most important factor controlling the integrity of adhesive joints seemed to be the real contact area. The adhesive joints showed significantly higher strength when the hotmelt adhesive was first applied onto the rougher cartonboard of the assembly and then the smoother cartonboard was pressed on the adhesive than vice versa. The surface roughness of cartonboards mainly depended on whether the surface was pigment coated or not. Calendering displayed only a minor effect. No clear influence of surface chemical composition of the cartonboards on the adhesive joint strength was found due to the fact that changes in surface chemistry in this study also led to changes in surface roughness. The strongest adhesive joint was created between two medium-rough and surface-sized cartonboards

AB - The influence of surface treatments including pigment coating, surface sizing and calendering on the mechanical strength of hotmelt adhesive joints in pilot made cartonboards was studied. The mechanical strength of the joints was investigated using the Y-peel test device at 23°C and 50% relative humidity. Some of the samples were investigated with respect to the failure mode by scanning electron microscopy. The surfaces were characterized in terms of surface roughness, surface chemical composition, and adhesion behaviour. A strong adhesive bond displayed fibre tear. In addition to fibre tear, interfacial failure, i.e., failure between the cartonboard and the adhesive, was the main reason for fracture in the bonded assembly. The most important factor controlling the integrity of adhesive joints seemed to be the real contact area. The adhesive joints showed significantly higher strength when the hotmelt adhesive was first applied onto the rougher cartonboard of the assembly and then the smoother cartonboard was pressed on the adhesive than vice versa. The surface roughness of cartonboards mainly depended on whether the surface was pigment coated or not. Calendering displayed only a minor effect. No clear influence of surface chemical composition of the cartonboards on the adhesive joint strength was found due to the fact that changes in surface chemistry in this study also led to changes in surface roughness. The strongest adhesive joint was created between two medium-rough and surface-sized cartonboards

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KW - hotmelt adhesive

KW - mechanical strength

KW - Y-peel test

KW - surface treatment

KW - surface roughness

KW - surface chemistry

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