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 pouch with heat-shrinkable layer is described. The pouch comprises a first wall; a second wall; a perimeter comprising a first edge and a second edge opposing the first edge; and a product space positioned between the first wall, the second wall, and the perimeter. The pouch is configured to fully enclose the product space. The first wall comprises a first wall first layer having a machine direction shrinkage value of greater than 5% shrink at 90° C., a first wall second layer having a machine direction Gurley stiffness force of at least 800 mgf and a machine direction shrinkage value at 90° C. of less than the machine direction shrinkage value of the first wall first layer at 90° C., a first wall pattern connection, and a first wall air inlet. The first wall first layer is interior the first wall second layer. Various embodiments of the pouch are also described.

Abstract: A multilayer pouch with heat-shrinkable layer is described. The pouch comprises a first wall; a second wall; a perimeter comprising a first edge and a second edge opposing the first edge; and a product space positioned between the first wall, the second wall, and the perimeter. The pouch is configured to fully enclose the product space. The first wall comprises a first wall first layer having a machine direction shrinkage value of greater than 5% shrink at 90° C., a first wall second layer having a machine direction Gurley stiffness force of at least 800 mgf and a machine direction shrinkage value at 90° C. of less than the machine direction shrinkage value of the first wall first layer at 90° C., a first wall pattern connection, and a first wall air inlet. The first wall first layer is interior the first wall second layer. Various embodiments of the pouch are also described.

Abstract: A chlorine-free packaging sheet having a first rigid component, a second rigid component and a multilayer film positioned between the first rigid component and the second rigid component, a package comprising such packaging sheet and a method of manufacturing such sheet. The packaging sheet has a normalized combined tear initiation and propagation resistance in both the machine direction and the transverse direction of less than about 0.115 in*lbf/mil energy to break and less than about 0.800%/mil elongation, and a normalized tear propagation resistance in both the machine direction and the transverse direction of less than about 0.300 in*lbf/mil energy to break and less than about 0.145 lbf/mil peak load.