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Effect of high‐pressure processing on the permeance of selected high‐barrier laminated films
Author(s) -
Caner C.,
Hernandez R. J.,
Pascall M. A.
Publication year - 2000
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/1099-1522(200009)13:5<183::aid-pts514>3.0.co;2-u
Subject(s) - permeance , low density polyethylene , materials science , distilled water , linear low density polyethylene , composite material , carbon dioxide , water vapor , blow molding , oxygen , polyethylene , polyethylene terephthalate , polymer chemistry , chemistry , organic chemistry , chromatography , mold , selectivity , catalysis
This study investigated the effects of high pressure processing (HPP) on the barrier properties of eight multilayer films. Pouches made from these films were filled with distilled water, sealed and then pressure processed at 600 and 800 MPa for 5, 10 and 20 min at 45°C. Controls were similarly prepared but exposed to atmospheric pressure. After processing, all pouches were dried and their oxygen, carbon dioxide and water vapour permeance determined. Films used in this study were PET/SiO x /LDPE, PET/Al 2 O 3 /LDPE, PET/PVDC/nylon/HDPE/PE, PE/nylon/EVOH/PE, PE/nylon/PE, metallized‐PET/EVA/LLDPE, PP/nylon/PP and PET/PVDC/EVA. Results showed that metallized PET was most severely affected by HPP, as its permeance values for oxygen, carbon dioxide and water increased as much as 150%. Copyright © 2000 John Wiley & Sons, Ltd.