Cosmetic Bottle Non-Return Valve Sheet Prevents Backflow
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Solution Overview
Problem
Cosmetic packaging bottles with soft tube packaging often experience backflow of lotion during use, leading to contamination by microorganisms or bacteria.
Innovation Solution
A cosmetic packaging bottle with a one-way flow restriction function, featuring a spiral side groove channel and a non-return valve sheet with a cross-shaped cutout, prevents backflow by allowing contents to exit only in one direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a soft tube packaging bottle with massage head and heating/vibration accessories is used, then user comfort is improved, but backflow of lotion occurs causing contamination
Solution Approach 1:
A non-return valve sheet is introduced as an intermediary component between the bottle contents and the dispensing system. The valve sheet includes a flow restriction channel with spiral structure and a one-way valve mechanism that mediates the flow of lotion, allowing it to move forward during dispensing while preventing backward flow that would cause contamination.
Solution Approach 2:
The flow path is segmented into distinct sections: an inlet flow passage, a flow restriction channel with spiral structure, and an outlet flow passage. The non-return valve sheet is positioned at a specific location within this segmented path to control flow direction, creating separate zones for forward dispensing and preventing backward contamination.
2Adaptability or versatility
If a long passage is provided in the bottle seat outlet for massage accessories, then massage function is improved, but lotion flows back into the passage
Solution Approach 1:
The non-return valve sheet acts as a mediator in the flow path, positioned between the bottle contents and the long passage containing massage accessories. It allows lotion to flow forward through the passage for massage function while blocking any backward flow, preventing contamination of the passage and accessories.
3Productivity
If contents are squeezed out with excessive force, then dispensing speed is improved, but contents splash and spill causing waste
Solution Approach 1:
The flow restriction channel is designed with a spiral structure featuring curved paths rather than straight lines. This curved geometry gradually redirects the flow of lotion, reducing turbulence and splashing that occurs with excessive squeezing force, thereby preventing spillage and waste while maintaining dispensing speed.
Solution Approach 2:
The spiral flow restriction channel changes the flow parameters of the lotion by creating a controlled path with specific curvature and length. This transforms the direct, high-velocity flow into a more controlled, gradual flow that reduces splashing and spillage even when squeezing force is applied.
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 solution effectively prevents backflow and contamination by ensuring that cosmetic contents are squeezed out in one direction only, maintaining the quality and sterility of the contents.
Implementation Method 1
the non-return valve sheet is squeezed by the contents to open upward, the contents are discharged. After the stopping of squeezing, the soft tube packaging bottle has a tendency to reset and will suck back the contents, the contents tend to flow back. At this time, the non-return valve sheet is sucked downward against the upper surface of the flow restriction seat to keep it closed
Implementation Method 2
the side groove channel is a spiral structure. The spiral flow restriction channel makes contents enter from the side and exit from the upper part, which can limit the outflow rate of contents
Data Source
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AI summary
The invention relates to a cosmetic packaging bottle restricting backflow, includes a soft tube packaging bottle and a liquid discharge head, and also includes a non-return valve sheet, which is placed within the liquid discharge head. The non-return valve sheet has a one-way flow restriction function, so that contents of the soft tube packaging bottle are squeezed out in one direction and cannot flow back. A cosmetic packaging bottle restricting backflow in the invention has a one-way flow restriction function, so that contents of the soft tube packaging bottle are squeezed out in one direction and cannot flow back, preventing contents from flowing back and causing contamination of contents of the soft tube packaging bottle.