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Barrier properties of greaseproof paper
Karlstad University, Division for Chemistry.
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

The barrier properties of greaseproof paper are achieved by extensive beating of the fibres. This treatment results in high costs for energy, both as beating energy and drying energy. A full-scale trial has been performed to investigate the role of the pulp with respect to energy demand and the barrier properties of the final papers. The paper made of 100% sulphite pulp with a low degree of beating showed the lowest energy consumption at a given level of barrier properties such as air permeance, grease resistance and water vapour transmission rate.

The papers produced in the full-scale trial have been used as substrates for coating. Greaseproof paper has a closed surface and should therefore be a good base paper for barrier coatings.

Chitosan has been used as a barrier coating because of its good oxygen barrier properties. Moreover, chitosan is a renewable material. Coating trials on a bench-scale showed that greaseproof paper can be upgraded to provide a good oxygen barrier. The oxygen barrier could not be achieved on a pilot-scale using the metered size press technique, because of the low coat weight applied.

The influence of the base paper on the barrier properties of chitosan-coated paper has been investigated. It was found that greaseproof paper is better than a paper with a higher porosity. The coating seemed to stay more on the surface of the greaseproof papers and to form a continuous coating layer with better barrier properties.

Place, publisher, year, edition, pages
Institutionen för kemi , 2005.
Series
Karlstad University Studies, ISSN 1403-8099 ; 2005:17
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-1411ISBN: 91-85335-57-6 (print)OAI: oai:DiVA.org:kau-1411DiVA, id: diva2:5289
Presentation
2005-05-14, Nyqvistsalen, 9C 203, Karlstads universitet, Karlstad, 09:00
Opponent
Supervisors
Available from: 2008-02-08 Created: 2008-02-08 Last updated: 2010-09-17
List of papers
1. The relationship between energy requirement and barrier properties in the production of greaseproof paper
Open this publication in new window or tab >>The relationship between energy requirement and barrier properties in the production of greaseproof paper
2005 (English)In: TAPPI Journal, ISSN 0734-1415, Vol. 4, no 8, p. 7-11Article in journal (Refereed) Published
Identifiers
urn:nbn:se:kau:diva-1929 (URN)
Available from: 2007-11-09 Created: 2007-11-09 Last updated: 2017-12-07Bibliographically approved
2. Barrier and Surface Properties of Chitosan-Coated Greaseproof Paper
Open this publication in new window or tab >>Barrier and Surface Properties of Chitosan-Coated Greaseproof Paper
2006 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 65, no 4, p. 453-460Article in journal (Refereed) Published
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kau:diva-1981 (URN)10.1016/j.carbpol.2006.02.005 (DOI)
Available from: 2008-02-08 Created: 2008-02-08 Last updated: 2017-12-07Bibliographically approved
3. Influence of base paper on the barrier properties of chitosan-coated papers
Open this publication in new window or tab >>Influence of base paper on the barrier properties of chitosan-coated papers
2006 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 21, no 5, p. 685-689Article in journal (Refereed) Published
Identifiers
urn:nbn:se:kau:diva-1931 (URN)
Available from: 2007-11-09 Created: 2007-11-09 Last updated: 2017-12-07Bibliographically approved

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