Packaging Container Roller Applicator Sealing and Dispensing
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Solution Overview
Problem
Ball containers face issues with leakage after multiple uses, difficulty in dispensing high-viscosity materials, and hindered application due to the need to apply with the outlet facing down, obstructing visibility and reducing contact area with the skin.
Innovation Solution
A squeezable tube container with a roller applicator and a cover that seals the orifice, allowing the material to flow onto the roller applicator for even application, adjustable orifice size for viscosity compatibility, and a design that allows for application at an angle less than 60 degrees for improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ball is pressed against the cover to close the liquid outlet, then the liquid outlet is sealed, but after multiple uses the outlet area wears out causing liquid leakage
Solution Approach 1:
The invention extracts the ball closing mechanism and replaces it with a cap that seals the outlet through threading or snapping. This removes the harmful pressing action on the outlet area, eliminating wear and leakage issues while maintaining sealing functionality.
Solution Approach 2:
The invention introduces a cap as an intermediary sealing component between the outlet and the environment. The cap with its blocking portion provides the sealing function without direct contact and pressure on the outlet area, preventing wear and extending service life.
2Device complexity
If the gap between the ball and liquid outlet is restricted by the ball bearing seat, then the structure is compact, but high-viscosity inner material is difficult to flow out
Solution Approach 1:
The invention replaces the fixed ball bearing seat structure with a dynamic cap that can be easily opened and closed. The cap allows the outlet to be fully open during use, enabling high-viscosity materials to flow out smoothly, while providing compact sealing when closed through threading or snapping mechanisms.
Solution Approach 2:
The invention changes the outlet state from a restricted gap to a fully open configuration when the cap is removed. This parameter change allows high-viscosity materials to flow freely onto the roller applicator, improving dispensing ease while maintaining structural compactness when sealed.
3Ease of operation
If the liquid outlet must face down for the ball to be soaked into inner material, then the ball picks up material, but the user's sight is hindered in the mirror and application accuracy is reduced
Solution Approach 1:
The invention inverts the traditional ball container orientation requirement. Instead of needing the outlet to face down, the cap-sealed tube allows the outlet to face upward or at various angles. The material flows onto the roller applicator by gravity when the tube is inverted during application, but the cap sealing works in any orientation, enabling mirror visibility and precise application.
Solution Approach 2:
The cap serves as an intermediary that decouples the sealing function from the application orientation. The cap seals the outlet regardless of orientation, allowing the user to hold the container at any angle including upward-facing for mirror visibility, while still preventing leakage when closed.
4Productivity
If the ball contacts the skin during application, then material is applied, but the contact area is very small (less than 30% of ball surface area)
Solution Approach 1:
The invention uses a roller applicator with a curved surface that naturally contacts a larger area of the skin compared to a ball. The cylindrical or spherical roller design increases the contact surface area to more than 65% of the applicator surface, improving both application efficiency and massage effect while maintaining portability.
Data Source
AI summary
A packaging container includes a tube body, a tube head, a roller applicator, and a cover. The tube head is connected to one end of the tube body, and the roller applicator is arranged on the tube head. When not in use, the cover may cover the tube head, and the blocking portion of the cover seals an orifice of the tube head to prevent inner material from leaking. When in use, the contact area between the roller applicator and the skin may reach more than 65%, which provides an improved massage effect.