Change search
Refine search result
1 - 11 of 11
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Andersson, C
    et al.
    Ernstsson, M
    YKI – Ytkemiska institutet.
    Järnström, L
    Barrier properties and heat sealability/failure mechanisms of dispersion coated paperboard2002In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 15, p. 209-224Article in journal (Refereed)
    Abstract [en]

    Plate-like fillers are often added to improve barrier properties and to prevent blocking of dispersion coatings on paper and board. We have studied the effects of clay addition, neutralizing agent and drying conditions on water vapour permeability, water absorption, oxygen permeability and heat sealability of carboxylated styrene/butyl acrylate dispersion coatings on a pilot scale. The barrier dispersions were applied on a pre-coated side of a three-ply board, using a pre-metering roll coater. Coated strips were sealed under specified conditions of temperature, time and pressure and the sealability was assessed by measuring the peak load necessary to break the joints. The surface composition of the barrier-coated board was analysed and the mode of failure was characterized by ESCA. The occurrence of pinholes in the barrier coatings was assessed by both staining tests and ESEM/EDX analysis of the surface topography. The resulting barrier properties were satisfactory as far as resistance to water transport in both liquid and vapour form is concerned. The oxygen permeability was similar to that of similar amorphous polymers. Heat-sealing tests showed that the mode of failure was mainly cohesive in nature, as fibre tear occurred when sealed strips were separated. Neutralization with sodium hydroxide gave poor adhesion and had a negative effect on the seal strength. Barrier measurements and ESEM/EDX analysis both showed that the pinholes present extended only through the barrier coating

  • 2. Andersson, C
    et al.
    Järnstrom, L
    Fogden, A
    Mira, I
    YKI – Ytkemiska institutet.
    Voit, W
    Zywicki, S
    Preparation and incorporation of microcapsules in functional coatings for self-healing of packaging board2009In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 22, no 5, p. 275-291Article in journal (Refereed)
    Abstract [en]

    The replacement of flexible polyolefin barrier layers with novel, thin, functional polymer coatings in the production of paperboard packaging involves the risk of deteriorated barrier and mechanical properties during the converting process. Local defects or cracks in the protective barrier layer can arise because of the stress induced in creasing and folding operations. In this study, the incorporation of microencapsulated self-healing agents in coating formulations applied both by spot- and uniform-coating techniques was studied. The preparation process of microcapsules with a hydrophobic core surrounded by a hydrophobically modified polysaccharide membrane in aqueous suspension was developed to obtain capsules fulfilling both the criteria of small capsule size and reasonably high solids content to match the requirements set on surface treatment of paperboard for enhancement of packaging functionality. The survival of the microcapsules during application and their effectiveness as self-healing agents were investigated. The results showed a reduced tendency for deteriorated barrier properties and local termination of cracks formed upon creasing. The self-healing mechanism involves the rupture of microcapsules local to the applied stress, with subsequent release of the core material. Crack propagation is hindered by plasticization of the underlying coating layer, while the increased hydrophobicity helps to maintain the barrier properties.

  • 3. Demertzis, P.G.
    et al.
    Johansson, F.
    Lievens, C.
    Franz, R.
    Studies on the development of a quick inertness test procedure for multi-use PET containers - Sorption behaviour of bottle wall strips1997In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 10, no 1, p. 45-58Article in journal (Refereed)
    Abstract [en]

    This study is part of a larger project aimed at establishing criteria to ensure the quality and safety-in-use of recycled and re-used plastics for food packaging. A major concern is that plastic materials can interact with chemicals to a greater or lesser extent. As a consequence, refillable containers may be contaminated by migration of harmful substances into the plastic material due to misuse by consumers before return. On the other hand, there is currently neither any specific national or EU regulation nor a standard test procedure available which could be applied by industry or enforcement laboratories to meet this situation appropriately. In this study, a relative simple inertness test which focuses on the interaction of PET bottle wall strips with a selection of model contaminants was investigated. The model contaminants were selected to include four different sets of chemical functional classes (set A, alcohol-type compounds; set B, ester/ketone type compounds; set C, hydrocarbon-type compounds; set D, chlorinated hydrocarbons). A simple gas chromatographic method using flame ionization detection was developed to allow quantification of the whole range of model contaminants. Linearity and reproducibility of the calibration curves for all contaminants were excellent, which indicates the validity and efficacy of the proposed methodology. The sorption experiments with PET bottle wall strips showed that significant amounts of chemicals can be absorbed into the plastic material if misused, thus establishing a remigration potential in the bottle material after refilling. © 1997 by John Wiley & Sons, Ltd.

  • 4.
    Dominic, Chris
    RISE, Innventia.
    Supply and demand chain integration:: A case study conducted in the packaging industry2013In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, no 1, p. 51-63Article in journal (Refereed)
  • 5. Jamialahmadi, A.
    et al.
    Trost, Thomas
    RISE, Innventia.
    Östlund, Sören
    KTH Royal Institute of Technology, Sweden.
    A proposed tool to determine dynamic load distribution between corrugated boxes2011In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, no 6, p. 317-329Article in journal (Refereed)
    Abstract [en]

    This paper summarizes the dynamic analysis of the interaction of corrugated boxes in transport using a pressure-mapping system. The dynamic contact forces on the contact area between boxes in both vertical and horizontal directions were measured, and the position of the instantaneous centre of force was traced, from which the pitch motion of boxes relative to each other was studied. The level-crossing diagrams of the contact forces show a Rayleigh distribution for the vertical contact and a Gaussian distribution for the horizontal contacts. The contact force and acceleration power spectral density from accelerometers and pressure-mapping system were compared. The results show that a pressure-mapping system is an interesting tool for the analysis of the dynamic performance of systems of corrugated boxes under different stacking and loading conditions.

  • 6. Nestorson, A.
    et al.
    Forsgren, G.
    Leufvén, Anders
    SIK – Institutet för livsmedel och bioteknik.
    Jarnstrom, L.
    Multivariate analysis of retention and distribution of aroma compounds in barrier dispersion coatings2007In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 20, no 5, p. 345-358Article in journal (Refereed)
    Abstract [en]

    The influence of drying conditions, latex type, talc content and amount of added aroma compounds on the retention and distribution of aroma compounds in barrier dispersion coatings was explored using static headspace gas chromatography combined with multivariate data analysis. The model aroma system consisted of an alcohol, an ester, an aldehyde, a ketone and two terpenes. Four latex grades based on styrene-acrylate and styrene-butadiene were studied. It was found that non-polar aroma compounds were retained best in styrene-butadiene latex, while polar ones were retained more in the styrene-acrylate latex. Talc increased the retention of all the aroma compounds. The retention of polar compounds was higher with shorter drying times, which is probably due to greater losses during the later steps of the film formation process when internal water was evaporated. Polarity and talc also affected the partition of the aroma compounds between air and film. Copyright © 2007 John Wiley & Sons, Ltd.

  • 7. Nestorson, A.
    et al.
    Leufven, A.
    Jarnstrom, L.
    Interactions between aroma compounds and latex films: Partition coefficients and influence on latex film formation2006In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 19, no 2, p. 71-82Article in journal (Refereed)
    Abstract [en]

    The potential of various latex grades to take up, retain and release different types of aroma compound has been explored. The latex grades used included two styrene-acrylate latices and two styrene-butadiene latices, of which one contained talc. The aroma compounds used were ethyl butyrate, 1-hexanol, heptanal, 3-octanone, ?-pinene and limonene dissolved in propylene glycol. It was shown that talc improves both the uptake of aroma compounds in the dispersion phase and the retention during the film formation process. However, the styrene-acrylate latex had a greater ability than the styrene-butadiene latex to hold the aroma compounds once the films were formed. These results have been compared to calculated solubility parameters. The uptake of 1-hexanol and propylene glycol in the latex dispersions were higher than expected from the theoretical calculations, probably because of the amphiphilic nature of these molecules. In addition, the influence of aroma compounds on the film formation was evaluated. Copyright © 2005 John Wiley & Sons, Ltd.

  • 8. Nestorson, A.
    et al.
    Neon, K.G.
    Kang, E.T.
    Jarnstrom, L.
    Leufven, A.
    Enzyme immobilization in latex dispersion coatings for active food packaging2008In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 21, no 4, p. 193-205Article in journal (Refereed)
    Abstract [en]

    Carboxylated styrene acrylate latex samples have been functionalized by the immobilization and entrapment of the enzyme glucose oxidase (GOx), which can be used as an oxygen scavenger in food packaging. GOx was covalently immobilized both on the surface of already formed films and on the latex particles in dispersion, as well as entrapped within the polymer matrix. In the latter two cases, polymer films were formed after the enzyme had been added to the latex dispersion. The storage stability of the enzyme and the influence of adding clay were also studied. For a given amount of enzyme, the enzyme immobilized on the film surface showed an enzyme activity about 10 times higher than that of the enzyme present within the polymer matrix. This is probably due to the diffusion limitations of the substrate in the polymer matrix. The films with the enzyme present within the polymer matrix, however, showed a higher total oxygen-removal capacity than films with the enzyme immobilized on the surface. Entrapped enzyme showed a slightly higher activity than enzyme immobilized in the dispersion due to the negative effect of the activating chemicals used during the immobilization and on conformational constraints upon covalent bonding. Low amounts of clay added to the dispersion decreased the enzyme activity, but with higher amounts of clay the enzyme activity increased, probably because of the increased porosity and thus higher substrate accessibility. The most suitable storage condition for all the enzyme-containing films was +8°C, which is just above the glass transition temperature of the polymer used. Copyright © 2007 John Wiley & Sons, Ltd.

  • 9.
    Nygårds, Mikael
    et al.
    RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
    Sjökvist, Stefan
    RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
    Marin, Gustav
    RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
    Sundström, Jonas
    RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
    Simulation and experimental verification of a drop test and compression test of a gable top package2019In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 32, no 7, p. 325-333Article in journal (Refereed)
    Abstract [en]

    A finite element framework has been proposed that can be used to simulate both empty paperboard packages and package filled with plastic granulates. A gable top package was made of a commercial paperboard, and material properties needed in the material model were determined. Two simulations were performed, a drop test and a compression test. By comparison between experimental and numerical results, the deformation mechanisms at impact could be identified and correlated to material properties. When the package was filled with granulates, different mechanisms was activated compared with an empty package. The granulates contribute to bulging of the panels, such that the edges became more load bearing compared with the panels. When the edges carried the loads, the importance of the out-of-plane properties also increased, and local failure initiation related to delamination was observed. Comparison between experimental and numerical impact forces shows that there are still important things to consider in the model generation, eg, variation of properties within the package, which originate both from material property variations, and the loading history, eg, during manufacturing and handling.

  • 10.
    Pousette, S.
    et al.
    RISE, Innventia.
    Löfgren, M.
    RISE, Innventia.
    Nilsson, B.
    Gustafsson, A.
    An extended method to measure overall consumer satisfaction with packaging2014In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 27, no 9, p. 727-738Article in journal (Refereed)
  • 11. Wessling, C.
    et al.
    Nielsen, Tim
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Leufvén, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.
    Influence of ?-tocopherol concentration on the stability of linoleic acid and the properties of low-density polyethylene2000In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 13, no 1, p. 19-28Article in journal (Refereed)
    Abstract [en]

    In food packaging applications where low-density polyethylene (LDPE) film containing ?-tocopherol is used, the antioxidant may have a dual function, i.e. to protect the polymer from oxidative degradation during processing, and to delay the onset of oxidation of the packaged foodstuff during storage. Incorporation of high levels of ?-tocopherol into LDPE film was found to inhibit oxidation of a linoleic acid emulsion stored in contact with the film at 6°C. However, the presence of 360 ppm caused changes in mechanical properties and an increase in oxygen transmission. Levels as high as 3400 ppm ?-tocopherol also caused yellowing and reduction in crystallinity of the material. Thus, the use of high amounts of ?-tocopherol in LDPE, which might be needed in active packaging applications, requires careful consideration of the protective requirements for each specific food and the maintenance of the desired properties of the packaging material.

1 - 11 of 11
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.8