Dispensing Closure Movable Flow Control Member
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Solution Overview
Problem
Existing dispensing closures lack efficient flow control mechanisms that can reliably prevent accidental dispensing while allowing controlled dispensing of flowable products.
Innovation Solution
A dispensing closure with a movable flow control member that can switch between a sealed and unsealed position, utilizing spring members and cooperating sealing surfaces to control fluid flow through a dispensing orifice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flow control member is added to control product flow, then dispensing control is improved, but device complexity increases
Solution Approach 1:
The flow control member is nested within the closure body, positioned inside the dispensing channel. This nested configuration allows the flow control mechanism to be integrated into the existing closure structure without requiring separate external components, thereby improving dispensing control while minimizing the increase in overall device complexity
Solution Approach 2:
The flow control member is designed to be movable between a first position (blocking flow) and a second position (allowing flow) in response to applied force. This dynamic capability enables controlled dispensing operation, allowing the user to switch between sealed and flowing states by applying or releasing force on the flow control member
2Reliability
If spring members are used to bias the flow control member, then accidental dispensing is prevented, but manufacturing complexity increases
Solution Approach 1:
The spring member is pre-loaded during assembly to automatically bias the flow control member to the first position (blocking position). This preliminary action ensures that the closure is reliably sealed against accidental dispensing upon assembly, without requiring additional complex locking mechanisms or assembly steps
Solution Approach 2:
The spring member provides self-service by automatically maintaining the flow control member in the blocked position and automatically returning it to the blocked position after dispensing. This self-biasing mechanism ensures reliable accidental dispensing prevention without requiring external control systems or complex actuation mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents accidental dispensing by maintaining a sealed position until product pressure overrides the spring bias, allowing controlled flow and ensuring product integrity.
Implementation Method 1
The flow control member may be provided with one or more spring members which resiliently bias the flow control member to the sealed position
Implementation Method 2
product flow pressure causes the or each spring to bend against the dispensing channel so that the flow control member moves to an unsealed position within the channel to allow product to flow to the dispensing orifice
Data Source
AI summary
A dispensing closure for a flowable product is provided. The closure comprises a dispensing channel having a dispensing orifice, and a separate flow control member movable with respect to the dispensing channel. The flow control member is movable from a sealed position in which it prevents product flow through the dispensing orifice and an unsealed position in which fluid can flow around and/or within the flow control member to reach the dispensing orifice.