Cosmetic Applicator Unitary Assembly Threadless Manufacturing
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Solution Overview
Problem
Existing container/applicators for cosmetic products face challenges in manufacturing efficiency, cost-effectiveness, and seal effectiveness, particularly in short runs, due to complex designs and the need for expensive tools, and often result in alignment issues and unsatisfactory seals.
Innovation Solution
A container/applicator design featuring a unitary cap/applicator/rod/squeegee/casing sub-assembly that can be easily assembled and filled, with a flexible squeegee housed in the casing, using radial clamping for fixed rigid combinations and threadless construction for simplified manufacturing, allowing for efficient production and effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional container/applicator designs with multiple separate parts are used, then functional requirements can be met, but manufacturing complexity increases and production cost rises
Solution Approach 1:
The patent combines the cap, applicator, and rod into a single unitary cap/applicator/rod assembly that is formed as one integral piece. This eliminates the need for separate parts and complex assembly operations, directly resolving the contradiction between manufacturing simplicity and device complexity.
2Manufacturing precision
If expensive tools such as sliding moulds are used, then manufacturing precision can be improved, but production cost increases significantly
Solution Approach 1:
By forming the cap, applicator, and rod as a single unitary assembly, the patent eliminates the need for complex sliding moulds that would be required to manufacture multiple separate precision parts. The integral design achieves alignment precision inherently through its monolithic structure, avoiding expensive tooling.
Solution Approach 2:
The unitary cap/applicator/rod assembly serves multiple functions simultaneously - it provides closure, application, and structural support - eliminating the need for specialized tools for each component and reducing overall manufacturing complexity and cost.
3Reliability
If complex assembly operations are used, then seal effectiveness can be improved, but production speed decreases
Solution Approach 1:
The unitary cap/applicator/rod assembly is designed to be received as a single pre-assembled unit within the reservoir, eliminating the need for complex multi-step assembly operations during filling. This maintains seal effectiveness through the integral design while enabling high-speed production.
4Ease of operation
If flexible squeegee is used, then wringing function is improved, but alignment stability deteriorates
Solution Approach 1:
The patent employs a flexible squeegee made of elastomeric material that provides effective wringing function through its flexibility, while the surrounding rigid cap/applicator/rod assembly and reservoir structure maintain alignment stability during operation.
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
This design enables cost-effective, high-speed manufacturing of container/applicators with improved seal quality and reduced production complexity, suitable for short runs and ensuring alignment integrity, while maintaining aesthetic appeal and modularity.
Implementation Method 1
The sealing means comprise a peripheral radial clamping, sealing the squeegee on the proximal end of the reservoir and on the casing
Data Source
AI summary
A container/applicator for content such as a cosmetic product has a cylindrical shape with an axis, that includes a reservoir having a wall, a closed end closed by a bottom and an open end with a free edge, a cap having a skirt and a top wall, and an applicator rod, a casing having a distal end and a proximal end, a squeegee, an interface, wherein the squeegee is a part separate from the casing and is housed in the casing, includes a protruding flange and a distal portion, is held by fixed rigid squeegee/reservoir-casing combination. The casing includes an open distal end, and a transverse step forming an inner shoulder.