초록 ▼

A method is provided for obtaining an acceptable configuration of a thermally processed container packed with food. Improvement in container configuration is attained by proper container design, by maintaining proper headspace of gases in the container during thermal processing, proper pressure outs

A method is provided for obtaining an acceptable configuration of a thermally processed container packed with food. Improvement in container configuration is attained by proper container design, by maintaining proper headspace of gases in the container during thermal processing, proper pressure outside the container during the cooking cycle and cooling cycle of the process and/or by controlled reforming of the bottom wall of the container. Further improvements are attained by controlling the thermal history of the empty container, such as by pre-shrinking the container before it is filled with food and sealed.

대표청구항 ▼

A high oxygen barrier thermally sterilizable plastic container for packaging food comprised of a high oxygen barrier layer and one or more structural layer(s) which consist(s) essentially of polyolefin(s), which container has been annealed and shrunk at about 250% F. for about 15 minutes or the equi

A high oxygen barrier thermally sterilizable plastic container for packaging food comprised of a high oxygen barrier layer and one or more structural layer(s) which consist(s) essentially of polyolefin(s), which container has been annealed and shrunk at about 250% F. for about 15 minutes or the equivalent, said container thereby having enhanced thermal sterilization characteristics in that, by virtue of its residual shrinkage when the container is filled with food, sealed and thermally sterilized at from about 190°F. to about 270°F. for a few minutes to about several hours, it will shrink about 2% or less during the thermal sterilization.