Abstract: A resealable package configured for heating in a microwave oven having at least one vent capable of relieving an internal pressure from an interior space of the package during heating. To protect the integrity of a resealable fastener, such as a zipper reclose feature, the at least one vent is capable of functioning at a low pressure below about 3.0 psi and preferably below about 1.4 psi. The at least one vent includes a specifically shaped outer portion and inner portion integrated into a package seal to allow for a controlled rupture or separation of this seal at the location of the at least one vent. This at least one vent can be formed directly into a seal of the package through a specifically shaped seal bar used during package formation.

Abstract: To reduce the amount of staining that occurs during the in-package retort processing of food products, a packaging film is used including a white multilayer film, the white multilayer film having a sealing region on the exposed surface of the packaging film, a white region containing white pigment and a blocking region located between the white region and the sealing region, where the combined thickness of the sealing region and the blocking region is at least 70% of the thickness of the white multilayer film.

Abstract: A multilayer barrier film comprises an oriented outer film and a sealing layer attached to the oriented outer film, and the oriented outer film has 1) a first exterior layer containing a first polymeric material having a moisture vapor transmission rate (MVTR) of greater than or equal to 10 gram·mil/100 in2/day, 2) a first EVOH layer adjacent to the first exterior layer, 3) an interior layer adjacent to the first EVOH layer, and 4) a second EVOH layer adjacent to the interior layer, the multibarrier film exhibiting rapid recovery of oxygen transmission barrier after exposure to a retort process.

Abstract: A multilayer barrier film for food packaging comprises an outer layer comprising a first polymeric material having a moisture vapor transmission rate (MVTR) of greater than or equal to 10 gram·mil/100 in2/day; a first inner layer adjacent to the outer layer, the first inner layer comprising a first retortable grade ethylene vinyl alcohol (EVOH) copolymer; a second inner layer adjacent to the first inner layer, the second inner layer comprising a second polymeric material having a moisture vapor transmission rate (MVTR) of greater than or equal to 10 gram·mil/100 in2/day; a third inner layer adjacent to the second inner layer, the third inner layer comprising a second retortable grade EVOH copolymer; and a sealing layer adjacent to the third inner layer; wherein the first polymeric material is not a retortable grade EVOH copolymer. Excellent recovery of oxygen barrier over time is achieved by these films and retortable containers made therefrom.

Abstract: To reduce the amount of staining that occurs during the in-package retort processing of food products, a packaging film is used including a white multilayer film, the white multilayer film having a sealing region on the exposed surface of the packaging film, a white region containing white pigment and a blocking region located between the white region and the sealing region, where the combined thickness of the sealing region and the blocking region is at least 70% of the thickness of the white multilayer film.

Abstract: A thermoplastic retort container for receiving a closure having a compressible gasket. The present invention further includes a sealing system for sealing the finish of a thermoplastic retort container. The sealing system includes a finish configured to engage a compressible gasket within a closure. Moreover, the present invention includes a method of sealing a container using a closure having a compressible gasket, wherein the container has a land portion for engaging the compressible gasket.

Abstract: A thermoplastic retort container for receiving a closure having a compressible gasket. The present invention further includes a sealing system for sealing the finish of a thermoplastic retort container. The sealing system includes a finish configured to engage a compressible gasket within a closure. Moreover, the present invention includes a method of sealing a container using a closure having a compressible gasket, wherein the container has a land portion for engaging the compressible gasket.