Method for prepressurizing dispensing container and for filling pressurized container with flowable product

Abstract From the Canadian patent

A pressurization pouch having a pressurization system therein activated by the application of a vacuum underpressure to the outside surfaces of the pouch is inserted into a dispensing container through an opening in a lid portion of the container. Upon the sealing of the container by the attachment of a valve member to the container lid at the opening thereof a vacuum gen-, erator is coupled to the valve member to generate negative pressure inside the dispensing container, thereby causing the pouch to expand under the pressure of a predetermined amount of air disposed therein. Upon that initial expansion the pressuriza-, tion pouch is further inflated owing to the action of the …