Pressurized barrier pack

摘要: The invention provides a low pressure package or packaging system for dispensing product of high viscosity, namely, 10,000 cps. above at only about 6-40 lbs. per sq. in. gauge (psig). reduces the safety hazard to practically zero, cost container very substantially and minimizes use metals, plastics other scarce materials. is preferably provided with barrier in form piston, bag, disc like, separate from propellant. By reason pressure, wall can be relatively thin, order 0.005 inch less case aluminum 2-inch diameter containers. necessary thickness materials than (such as steel, plastic, paper board laminates metal, plastic paper) will depend on their relative strengths. such thin-walled containers lowers same time renders so flexible pliable that conforms piston which helps prevent by-pass escape propellant gas also allows inside smooth out any dents occurring during transportation. conformation permits almost complete expulsion product. valve sealing head secured tiltable stem. considerably larger those prior valves, maybe three four more times internal hinges small portion its perimeter provide passageway extending throughout 360°.