Method of preventing a container from becoming colored by the container contents

摘要

A method of preventing a container from becoming colored by contents of the container in a packaging process comprising filling and sealing colored contents in a packaging container having an inner surface comprising a plastic material and then disinfecting and sterilizing the contents by heat treatment, wherein said inner surface plastic material comprises a thermoplastic resin having a glass transition temperature (Tg) 10 DEG C. or more higher than the temperature of said heat treatment and a coefficient of moisture permeability at 40 DEG C. and 90% RH of 2.0 g.mm/m2.24 hr or less.