Spout Fitment With Removable Inner Portion
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Solution Overview
Problem
Existing container fitments lack effective child-resistant closure mechanisms and efficient designs for dispensing liquid contents, particularly for flowable materials like laundry detergent, which can lead to accidental spills and difficulty in pouring.
Innovation Solution
A fitment with a spout and a removable inner portion featuring a frangible perimeter and a pull ring, allowing secure closure and easy opening, along with a measuring cup overcap that includes child-resistant locking features and a funnel region for controlled pouring, facilitating the safe dispensing of liquid contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a removable inner portion is added to seal the dispensing opening, then child-resistant closure is improved, but device complexity increases
Solution Approach 1:
The fitment is divided into a permanent outer portion and a removable inner portion. The inner portion can be selectively removed from the outer portion to transition between closed and open positions, providing child-resistant closure while maintaining a relatively simple overall structure.
Solution Approach 2:
The removable inner portion is nested within the permanent outer portion of the fitment. The inner portion fits inside the outer portion and can be selectively removed, creating a compact design that adds closure functionality without significantly increasing device complexity.
2Ease of operation
If a frangible perimeter is used to define the removable inner portion, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The frangible perimeter is pre-formed during manufacturing as a weakened region in the floor of the fitment. This preliminary preparation allows the inner portion to be easily broken away from the outer portion during use, providing ease of operation while the frangible features are integrated into the manufacturing process.
3Ease of operation
If a pull ring is added to the removable inner portion, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The pull ring is integrated directly into the removable inner portion, allowing the inner portion to serve its own removal function. The pull ring provides a convenient grasping feature that enables easy removal without requiring separate tools or mechanisms, maintaining simplicity while improving operation.
4Ease of operation
If the spout wall extends at an angular distance less than 230 degrees, then ease of pouring is improved, but liquid flow control becomes more difficult
Solution Approach 1:
The spout includes a funnel region with a specified radius of curvature (0.30-0.50 inches) that extends over an angular distance of 65-75 degrees. This curved geometry facilitates smooth liquid flow and easy pouring by reducing turbulence, while the specific angular constraints maintain adequate flow control without requiring additional mechanisms.
Data Source
AI summary
A closure with an overcap and fitment is disclosed, wherein the overcap is removably attachable to the fitment, and wherein the fitment includes a spout and a removable inner portion that may be removed to allow contents to pass through the fitment.