Cosmetic Packaging with Axial Pressure Compensation
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Solution Overview
Problem
Existing cosmetic packaging solutions fail to provide a comfortable and secure seal, especially under varying temperature conditions and atmospheric pressure changes, leading to product weight loss due to air leaks.
Innovation Solution
A packaging design featuring a movable vessel within the container and an elastically deformable pressure difference compensation system that adjusts volume to maintain a sealed connection between the vessel and lid, using a spring mechanism and flexible peripheral ring for improved sealing and reduced pressure on the sealing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gaskets exert forces in the radial direction to provide sealing, then sealing is achieved, but significant screwing torque or closing force is required making manipulation uncomfortable
Solution Approach 1:
Instead of applying radial sealing forces that require high torque, the invention inverts the approach by using axial forces through a movable base. The base moves along the container axis under atmospheric pressure differences, and this axial movement drives the sealing action, dramatically reducing the torque required for operation while maintaining reliable sealing.
Solution Approach 2:
The invention utilizes atmospheric pressure differences (pneumatic principle) to drive the sealing mechanism. When atmospheric pressure changes, the pressure difference moves the base axially, which automatically actuates the sealing gasket. This eliminates the need for manual torque application, as the environmental pressure itself performs the sealing work.
2Reliability
If the package structure is made robust to ensure sealing under pressure differences, then sealing reliability improves, but package size and bulk increase
Solution Approach 1:
The invention replaces static rigid sealing structures with a dynamic movable base that adapts to pressure differences. The base moves axially in response to atmospheric pressure changes, allowing the sealing system to maintain reliability under varying conditions without requiring an oversized rigid structure. This dynamic adaptation enables compact packaging while ensuring sealing integrity.
Solution Approach 2:
The sealing mechanism is self-actuating through atmospheric pressure differences. The pressure differential automatically moves the base to the appropriate position for sealing, eliminating the need for complex control systems or oversized structural components. The system uses the environmental conditions themselves to perform the sealing function, achieving reliability without increasing package bulk.
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 ensures a comfortable and secure lid operation, maintains fluidtightness across a wide temperature range, minimizes product weight loss, and simplifies manufacturing while reducing package size and parts.
Implementation Method 1
a pressure difference compensation system that is elastically deformable and suitable for forming a sealed connection between the vessel and the lid
Implementation Method 2
the pressure difference compensation system is elastically deformable
Implementation Method 3
it is provided that the package further comprises at least one spring means bearing on the container and urging the pressure difference compensation system in a vertical axial direction
Implementation Method 4
the movement of the vessel makes it possible to satisfy Boyle's law which states that the product of the pressure and volume of a perfect gas at constant temperature is constant
Data Source
AI summary
Packaging for packaging a product, such as a cosmetic composition Packaging (100) for packaging a product comprising a container (1) provided with an opening (10), a lid (3) able to move between a closed position in which it closes the opening (10) of the container (1) and an open position, and a storage unit (2). The storage unit (2) comprises: —a bowl (21) delimiting a reservoir (20) accepting the product and able to move in a vertical axial direction (Z), —an elastically deformable pressure-difference compensating system (22) forming a sealed connection between the bowl (21) and the lid (3). The storage unit (2) delimits, in combination with the lid (3) in the closed position, a sealed compartment (8) exhibiting a variable volume.