Pressurized Dispenser Fixing Ring with Gas Passages
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Solution Overview
Problem
Pressurization of dispensers with viscous products is challenging due to difficulties in filling and cleaning, especially with metering valves and high-flow valves, where traditional methods require piercing the container bottom or are not applicable for viscous substances like silicone and pasta.
Innovation Solution
A fixing ring with passages on its outer face allows gas introduction into the container without piercing, facilitating sealing and pressurization by positioning the ring with passages at the container opening edge, enabling gas flow through these passages before attaching the valve and collar for a sealed connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container bottom is pierced to introduce propellant gas, then pressurization is achieved, but the container structure is compromised and cleaning becomes difficult
Solution Approach 1:
The patent introduces propellant gas through the valve and collar assembly before the container bottom is pierced. The collar is positioned and sealed against the container opening, creating a preliminary pressurization pathway that avoids the need to pierce the bottom for gas introduction. This preliminary action resolves the contradiction by establishing an alternative pressurization route that preserves container integrity.
Solution Approach 2:
The collar acts as an intermediary component between the valve and the container opening. It provides a sealed interface for introducing propellant gas without requiring direct access to the container bottom. This intermediary structure enables pressurization while maintaining container integrity and facilitating easier cleaning by avoiding bottom piercing.
2Productivity
If viscous products are filled through the valve, then filling is achieved, but cleaning becomes difficult due to product remaining on walls
Solution Approach 1:
The patent extracts the filling operation from the valve pathway by introducing viscous products through the collar and container opening, separate from the valve mechanism. This extraction allows complete evacuation of the filling pathway without product remaining in the valve, thereby resolving the cleaning difficulty while maintaining efficient filling productivity.
3Reliability
If the collar diameter is greater than the container opening diameter for sealing, then sealing is improved, but the ring cannot be properly positioned
Solution Approach 1:
The fixing ring is segmented into distinct functional zones: an upper collar portion with diameter greater than the container opening for sealing, and a lower portion with reduced diameter for easy insertion and positioning. This segmentation resolves the contradiction by allowing the sealing portion to provide reliable sealing while the positioning portion facilitates proper ring placement before the collar engages the container opening.
Data Source
Figure 1~8
Figure 3~7
Figure 9(i)~9(vi)
AI summary
The invention relates to a securing ring for a pressurized dispenser fitted with a valve and with an interior pouch. The securing ring is equipped with a central part (31), on the exterior face of which a pouch is secured and the diameter of which is smaller than the diameter of the opening (12) of the container, and with a flange (32) for securing the ring between the edge of the opening (12) of the container and the peripheral edge (231) of the valve cup. The ring is further equipped on its exterior face, between the central part (31) and the flange (32), with at least one passage (361), the passage or passages (361) being dimensioned such that when the ring is placed in the opening (12) of a container with its passage or passages situated level with the edge of the opening (12) of the container, the passage or passages extend on both sides of the edge of the opening (11) and each form a path placing the part of the exterior face of the ring that is situated on the outside of the container in contact with the part of the exterior face of the ring that is situated on the inside of the container.