Effect of Blank Holding Force on the Gas Tightness of Paperboard Trays Manufactured by the Press Forming Process
| Autor: | Henry Lindell, Panu Tanninen, Juha Varis, Ville Leminen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Paperboard
Engineering Environmental Engineering business.industry lcsh:Biotechnology Blank holding force Modified atmosphere packaging Forming processes Bioengineering Blank Penetrant (mechanical electrical or structural) visual_art lcsh:TP248.13-248.65 visual_art.visual_art_medium MAP Composite material business Waste Management and Disposal Oxygen content Press-forming Tightness |
| Zdroj: | BioResources, Vol 10, Iss 2, Pp 2235-2243 (2015) |
| ISSN: | 1930-2126 |
| Popis: | Although several authors have studied 3D forming using the press forming process, the gas tightness of polymer-coated paperboard trays has not been widely researched. In this paper, the effect of blank holding force on the surface quality and tightness of press-formed paperboard trays was researched. The press-formed trays were heat-sealed with a multilayer polymer lid. The tightness of the trays was analyzed by following the oxygen content of the packages over the course of 14 d and by using a penetrant coloring solution to locate possible leaks. The results indicate that the blank holding force had a great effect on the quality and tightness of the trays, especially in the case of a rectangular geometry. The geometry of the formed trays played a significant role in process parameter selection, and more demanding geometries emphasize the importance of parameter optimization. However, with the correctly selected parameters, the use of modified atmospheric packaging (MAP) in polymer coated paperboard trays was shown to be possible. The oxygen content of both analyzed geometries was found to be less than 1% 14 d after sealing. It was also demonstrated that the gas tightness of a seal cannot be confirmed using a penetrant solution test exclusively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|