Integrated Bellows Spring Press Bottle for Cosmetic Packaging
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Solution Overview
Problem
Current press bottles for cosmetic products have complex structures, high manufacturing costs, inefficient use of space, and difficulties in recycling due to separate return springs and multiple materials.
Innovation Solution
An environment-friendly press bottle design integrating a bellows spring with the inner bottle, using a simplified structure made entirely of nontoxic engineering plastic, which allows for increased effective volume, easy assembly, and convenient recycling by eliminating separate metal springs and using a single material for all parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent metal spring is used as the return spring, then the pressing function is achieved, but the structure becomes complex and the manufacturing cost increases
Solution Approach 1:
The bellows spring integrates the return spring function directly into the inner bottle structure. The bellows spring is formed by folding the lower end of the inner bottle into a spring-like structure with wave crests and wave troughs, eliminating the need for a separate metal spring while maintaining the pressing return function.
Solution Approach 2:
The inner bottle serves multiple functions: it contains the cosmetic product, provides structural support, and its lower end forms the bellows spring that provides the return pressing force. This multi-functional design reduces the number of separate components needed.
2Reliability
If an independent metal spring is used as the return spring, then the pressing function is achieved, but the effective volume of the bottle is reduced
Solution Approach 1:
The bellows spring is integrated into the inner bottle structure itself, specifically using the lower end of the inner bottle to form the spring structure. This eliminates the need for separate spring components that would occupy additional space, thereby maximizing the effective volume for cosmetic product storage.
3Reliability
If separate metal springs and multiple materials are used, then the pressing function is achieved, but the recycling process becomes difficult
Solution Approach 1:
All components of the press bottle including the inner bottle, bellows spring, pressing lid, and other parts are made from the same nontoxic engineering plastic material. This material uniformity eliminates the need to separate different materials during recycling, making the entire bottle easily recyclable as a single material type.
Solution Approach 2:
The design eliminates metal springs and other separate material components that would complicate recycling. By removing these heterogeneous materials and using only plastic throughout, the recycling process is simplified to handling a single material type.
4Reliability
If various different materials are used, then the pressing function is achieved, but the manufacturing cost increases
Solution Approach 1:
All parts of the press bottle are manufactured from the same nontoxic engineering plastic material. This eliminates the need to source, handle, and assemble multiple different materials such as metal springs, reducing manufacturing complexity and cost while maintaining the required pressing return function.
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 integrated design simplifies manufacturing, reduces material usage, ensures easy recycling, and maintains hygiene standards while optimizing the bellows spring's structure for effective pressing dynamics and structural strength, making it suitable for lotion packaging.
Implementation Method 1
the lower end of the inner bottle (1) is integrated with the upper end of a bellows spring (2)... The longitudinal section of the bellows spring presents a trapezoid-wave-like structure with a rounded wave crest and wave trough
Data Source
AI summary
The present disclosure provides an environment-friendly press bottle integrated with a bellows spring and equipped with an outer shell, comprising: an inner bottle of which the lower end is integrated with the upper end of a bellows spring; the lower end of the bellows spring is a closed structure; the upper end of the inner bottle is necked to form a connector; the aperture in the middle of the connector is fitted with a nozzle; a step that fits onto the connector and limits its position is disposed on the central outer side of the nozzle; an annular flange that snaps into the corresponding position on the inner surface of the connector is disposed on the outer side of the lower end of the nozzle, and external threads are provided on the outer surface of the connector; a cover lid is provided with internal threads and is connected to the external threads of the connector; the inner bottle is tightly nested in the outer bottle that serves as an outer shell. The present disclosure integrates the body of the inner bottle with the bellows spring, which significantly simplifies the structure, increases effective volume, saves material, and guarantees recycle of all parts of the device when the content is exhausted. The device is particularly suitable for the packaging of cosmetic products in lotion form.