Method of making a pressure operated container for dispensing vi

Details Method of making a pressure operated container for dispensing vi Method of making a pressure operated container for dispensing vi

1975-09-09

1976-09-21

Spruill, Robert L.

Package making

Interrelated or safety controls

53 36, 141 3, B65B 3100

Patent

active

039811190

ABSTRACT:
The invention contemplates a method of making a pressurized container for viscous foods or other viscous products in which the body of the piston has a substantially smaller diameter than the diameter of the container. The outer periphery of the piston is provided with a resilient flange member that maintains a light sealing pressure on the interior surfaces of the container, allowing the piston to move smoothly upwardly within the container. The inventive method provides enhanced assurance against product leakage and against propellant-contamination of product, prior to selective product discharge as desired.

REFERENCES:
patent: 3022923 (1962-02-01), Hoffman
patent: 3224158 (1965-12-01), Baumann

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