Aerosol dispenser having annular seals and aerosol container therefor

Abstract

An aerosol container suitable for use as an aerosol dispenser. The aerosol container includes at least a valve and product delivery device joined to an outer container. The valve and product delivery device have respective annular welds or other seals joining the valve and product delivery to the outer container. The welds, or other seals may be concentric, with one circumscribing the other, in the same plane or different planes. Suitable product delivery devices include bags and dip tubes.

Description

FIELD OF THE INVENTION[0001]The present invention relates to permanently sealed plastic aerosol dispensers and aerosol containers for the manufacture thereof.BACKGROUND OF THE INVENTION[0002]Aerosol dispensers are well known in the art. Aerosol dispensers typically comprise an outer container which acts as a frame for the remaining components and as a pressure vessel for propellant and product contained therein. Outer containers made of metal are well known in the art. However, metal containers can be undesirable due to high cost and limited recyclability. Attempts to use plastic have occurred in the art. Relevant attempts in the art to employ plastic in aerosol dispensers are found in U.S. Pat. Nos. 2,863,699; 3,333,743; 4,969,577; 8,752,731; 9,296,550; 9,334,103 and 2009 / 0014679.[0003]The outer containers are typically, but not necessarily, cylindrical. The outer container may comprise a bottom for resting on horizontal surfaces such as shelves, countertops, tables etc. The bottom...

AI Technical Summary

Benefits of technology

The patent describes an aerosol dispenser and a container for it. The container has a valve and a product delivery device seal, which is separate from the outer container seal. This separation helps to prevent any communication between the two seals, which could cause leaks or contamination. The technical effect of this design is to improve the reliability and safety of the aerosol dispenser.

Problems solved by technology

However, metal containers can be undesirable due to high cost and limited recyclability.

But this operation is expensive and is difficult to perform with a plastic valve cup.

Each attachment step takes time in manufacturing and creates the opportunity for leakage if not correctly performed.

Various formats for the delivery devices may be required for different products, often complicating production.

But if one wishes to then manufacture an aerosol dispenser utilizing a bag for a particular production cycle, then manufacture an aerosol dispenser having a dip tube, for subsequent production cycles, considerable changeout is required.

Such increase dramatically raises production costs and increases the opportunity for mistakes.

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