This disclosure provides new heat sealable, barrier laminate packaging structures used for beverage component pouches or cartridges, including new structures and chemical compositions of the pouch made to contain the beverage base, component, or component concentrate. These structures and compositions used for heat sealable, barrier laminate packaging balance good heat sealability with improved performance for flavor scalping, oxygen permeability, and/or undesirable moisture ingress or egress, which affect the stability and useful life of the pouch or cartridge and its contents.