Packaging for high-pressure treatments in the food industry

TLDR

The study examines packaging materials suitable for high‑pressure treatments, focusing on barrier properties, flexibility, and overall package integrity. Six multilayer PA/PE packages with varying thickness, permeability, and stress characteristics were tested at 200, 350, and 500 MPa for 30 min at ambient temperature in water, acetic acid, ethyl alcohol, and olive oil simulants, comparing pressurized versus untreated performance. The packages achieved strong heat seals and maintained integrity against the surrounding pressure medium. © 2000 John Wiley & Sons, Ltd.

Abstract

This study highlights some important aspects of the package, such as packaging materials suitable for high-pressure treatments, package properties (barriers and flexibility) and package integrity. Six different types of package were tested. They consist of multilayer plastic packages (PA/PE), where thickness, permeability and stress varied at yield point and at breakage. They achieve a good heat seal and good protection from the pressure medium (water) surrounding them. Experiments were carried out at 200, 350 and 500 MPa for 30 min at ambient temperature, comparing the performance of pressurized multilayer plastic packages with untreated packages. Different simulants (water, 3% acetic acid, 15% ethyl alcohol and olive oil), in contact with the packages, were used to demonstrate the good integrity between package and foodstuff during treatment and shelf-life. Copyright © 2000 John Wiley & Sons, Ltd.