Polypropylene Paint Lid Assembly for Leak-Resistant Tint Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Prior art paint packages with metal lids and plastic tint plugs are complex, costly, and prone to leaking, especially when jostled or inverted, particularly with stain or low viscosity paints.
Innovation Solution
A novel package design featuring a container, lid, and closure, where the lid is constructed from polypropylene with a flexible coupling wall and a closure well angled at 15-20 degrees, allowing for a secure friction fit and sealing, and the closure has a helical thread or bayonet feature for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal lid with a punched tint hole and plastic cup-shaped tint plug is used, then the paint package can be sealed and tint can be added, but the design becomes complex and cost-prohibitive
Solution Approach 1:
The invention extracts and eliminates the complex tint plug assembly (punched hole, cup-shaped plug, sealing mechanisms) from the lid structure. Instead, it uses a simple polypropylene lid that integrates the sealing function into the lid body itself, requiring no separate plug components for tint addition.
Solution Approach 2:
The invention merges the lid and closure functions into a single integrated polypropylene component. The lid body itself incorporates the sealing mechanism through its friction fit design and flexible coupling wall, eliminating the need for separate metal lid and plastic plug components.
2Reliability
If a metal lid with plastic tint plug is used, then the package can be sealed, but it is prone to leaking when jostled or inverted
Solution Approach 1:
The invention incorporates a flexible coupling wall that can dynamically adapt to movement and pressure changes during transport. This flexibility allows the seal to maintain integrity under various orientations and vibrations, preventing leakage while preserving the friction fit sealing mechanism.
Solution Approach 2:
The invention uses polypropylene, a composite material with both rigidity for structural integrity and flexibility for sealing adaptation. This material property combination enables the lid to resist deformation during transport while maintaining the seal's effectiveness in various positions.
3Ease of manufacture
If a simple friction fit lid is used, then the manufacturing cost is reduced, but the sealing reliability may be compromised
Solution Approach 1:
The invention optimizes the friction fit parameters by adjusting the coupling wall geometry, surface texture, and material properties of the polypropylene lid. These parameter changes enhance the sealing reliability of the friction fit connection without adding complex components or manufacturing steps.
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 design provides a cost-effective, leak-resistant packaging solution that maintains integrity during transport and use, ensuring secure sealing and easy stacking of paint containers.
Implementation Method 1
a metal container and a metal lid friction fit to the metal container
Implementation Method 2
the closure has a helical thread or bayonet feature for secure attachment
Data Source
AI summary
A paint package lid (14, 114) includes a base wall (54) having a lid base wall upper surface (56) and a lid base wall lower surface (58), a container coupling rim (60) disposed radially outwardly with respect to the base wall and having a rim upper surface (62), and a closure well (64, 164) disposed radially inwardly with respect to the base wall. The closure well includes a radially outer wall (82) extending downwardly with respect to the base wall, a lower wall (84) extending radially inwardly with respect to the radially outer wall and establishing a lowermost surface (85) of the lid, and a neck (86, 186) disposed radially inwardly with respect to the radially outer wall and extending upwardly from the lower wall and having a closure coupling (95). Also disclosed is a lid and closure assembly and a paint package (10, 110, 210) including the lid.