• search hit 227 of 278
Back to Result List

Porosity, thickness distribution and water vapour sorption of thermoformed foamed PP films with dispersed sodium chloride for humidity regulation

  • Packaging materials containing certain salts can regulate the humidity of packaged products. This study investigated whether thermoforming of foamed monolayer PP films with dispersed NaCl increases the water vapour sorption capacity and rate. Foamed monolayer PP-films (thickness 630 μm, porosity 0.28) with 6 (g/100 g) dispersed NaCl crystals were thermoformed to cups with depths up to 90 mm. By thermoforming the porosity increased up to 0.63 and the effective water vapour diffusion coefficient elevated by one order of magnitude from 10−11 to 10−10 cm²∙s−1. Therefore, such films absorb and desorb water vapour with a higher rate and they can bind more salt solution which is formed from solid salt crystals by water vapour absorption. Our results are important for packaging producers who thermoform films to cups and trays. This study addresses markets for fresh produce and other products with a high water activity.

Export metadata

Additional Services

Search Google Scholar
Metadaten
Author:Sven SängerlaubORCiDGND, Elisa Lehmann, Kajetan MüllerGND, Ali Abas Wani
DOI:https://doi.org/10.1016/j.fpsl.2020.100482
Identifier:2214-2894 OPAC HS OPAC extern
Parent Title (English):Food Packaging and Shelf Life
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Date of Publication (online):2021/01/29
Year of first Publication:2020
Volume:24
Issue:June
Institutes:Fakultät Maschinenbau
Publication Lists:Müller, Kajetan
Publication reviewed:begutachtet
Release Date:2021/02/01
Verstanden ✔
Diese Webseite verwendet technisch erforderliche Session-Cookies. Durch die weitere Nutzung der Webseite stimmen Sie diesem zu. Unsere Datenschutzerklärung finden Sie hier.