Deinking flotation of recycled linerboard for food packaging applications
dc.contributor.author
dc.date.accessioned
2014-09-25T10:13:39Z
dc.date.available
2014-09-25T10:13:39Z
dc.date.issued
2010
dc.identifier.issn
0576-9787
dc.identifier.uri
dc.description.abstract
Brown packaging linerboard, made entirely from recovered pulp, was subjected to deinking flotation for evaluating the possible improvements in its chemical, optical and mechanical properties. The increase in the rate of recovered paper utilisation, along with the tendency towards lower basis weights, in the packaging paper production, has created a growing need for the utilisation of secondary fibers of improved quality. To attain better quality fibers, flotation deinking of brown grades is being considered, along with the addition of primary fibers to recovered paper furnish. Numerous conducted studies, in which the flotation technology was used in the treatment of brown grades, support this idea. Most of them show that the quality of fibers is improved after flotation deinking, resulting in higher mechanical properties of the deinked handsheets and in lower amounts of chemical contaminants. As to food and human health safety, packaging paper has to meet specific requirements, to be classified as suitable for its direct contact with foods. Recycled paper and board may contain many potential contaminants, which, especially in the case of direct food contact, may migrate from packaging materials into foodstuffs. In this work, the linerboard sample selected for deinking was made from recycled fibers not submitted previously to chemical deinking flotation. Therefore, the original sample contained many noncellulosic components, as well as the residues of printing inks. The studied linerboardsample was a type of packaging paper used for contact with food products that are usually peeled before use, e.g. fruits and vegetables. The decrease in the amount of chemical contaminants, after conducting deinking flotation, was evaluated, along with the changes in the mechanical and optical properties of the deinked handsheets. Food contact analysis was done on both the original paper samples and the filter pads and handsheets made before and after deinking flotation. Food contact analysis consisted of migration tests of brightening agents, colorants, PCPs, formaldehydes and metals. Microbiological tests were also performed to determine the possible transfer of antimicrobial constituents
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Editura Academiei Romane
dc.relation.isformatof
Reproducció digital del document publicat a: http://www.cellulosechemtechnol.ro/pdf/CCT10(2010)/p.481-488.pdf
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© Cellulose Chemistry and Technology, 2010, vol. 44, núm. 10, p. 481-488
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Articles publicats (D-EQATA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Deinking flotation of recycled linerboard for food packaging applications
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.idgrec
014471