A1 Journal article (refereed), original research

Effects of Press-forming Parameters on the Dimensional Stability of Paperboard Trays


Open Access publication

Publication Details
Authors: Niini Arvo, Tanninen Panu, Varis Juha, Leminen Ville
Publisher: Dept of Wood Paper Science, College of Natural Resources
Publication year: 2021
Language: English
Related journal or series: Bioresources
Volume number: 16
Issue number: 3
Start page: 4876
End page: 4890
Number of pages: 15
eISSN: 1930-2126
JUFO level of this publication: 1
Open Access: Open Access publication

Abstract

The dimensional stability of press-formed paperboard trays was
investigated during heating and cooling of trays packed with oatmeal.
Female mold tool temperature, dwell time, pressing force, and blank
holding force were altered in the press-forming of the trays to observe
their impacts on the dimensional stability. Dimensional measurements of
the trays showed reduced tray width, and the trays exhibited distortions
on the tray flange and outer wall. The results showed smaller effects
on the tray length, parallel to the machine direction of the material.
Improved dimensional stability of the trays was found with a 180 °C
female mold tool temperature, a 600-ms dwell time, a 150-kN pressing
force, and a 1.44-kN blank holding force. The optimal press-forming
parameters were concluded to enhance bonding of the paperboard fibers
during the press-forming. The optimization of the press-forming
parameters was found necessary to reduce the observed negative response
of the material to the challenging environmental conditions in the
production of prepared food.


Last updated on 2021-17-05 at 08:53