| 摘要 |
The invention contemplates a method of product-loading a pressure-operated dispensing container upon the head end of a selected piston whereby the weight of loaded product so axially compresses a locally resilient band of the selected piston that the piston automatically flexes in radially outwardly loaded contour-conforming contact with the adjacent container inner-wall surface. Upon thereafter closing the product-loaded end of the container and providing a super-atmospheric charge of pressurized gas in the remaining volume within the piston, piston-seal contact is enhanced to prevent product seepage past the resilient band.
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