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Effect of liquid viscosity on flow control of plastic lotion dispensers

2024.12.03

In the beauty, personal care and daily chemical industries, plastic lotion dispensers are core components of product packaging, and their flow control performance has an important impact on user experience, product stability and market acceptance. As one of the key factors affecting flow control, the viscosity of the liquid has a profound impact on the overall performance of the plastic lotion dispenser.

Basic concept of liquid viscosity
The viscosity of a liquid refers to the ability of the liquid to resist shear force, reflecting the strength of the internal friction of the liquid. Viscosity is an important parameter of the flow properties of a liquid, which directly affects the flow behavior, transmission efficiency and energy consumption of the liquid. In the application of plastic lotion dispensers, the viscosity of the liquid plays a decisive role in the working efficiency of the pump head and the accuracy of flow control.

Mechanism of the influence of viscosity on flow control
The increase in liquid viscosity will lead to an increase in flow resistance. Inside the plastic lotion dispenser, as the viscosity of the liquid increases, the flow resistance of the fluid also increases. This means that when pressing the pump head, more energy is needed to overcome this resistance, resulting in a significant reduction in the amount of liquid released each time it is pressed.
In addition, changes in liquid viscosity will also affect the movement state of the internal components of the pump head (such as pistons, springs, valve cores, etc.). When high-viscosity liquids flow inside the pump head, they will increase friction and wear on the pump head components, thereby affecting the performance and service life of the pump head. Changes in viscosity may also cause the internal components of the pump head to jam or fail, further affecting the stability and accuracy of flow control.
Changes in viscosity will also significantly change the flow characteristics of the plastic emulsion dispenser. When handling high-viscosity liquids, the flow output of the pump head may become unstable and prone to fluctuations or mutations. This instability makes it difficult for users to obtain uniform and stable liquid output when using the product, thereby affecting the overall user experience.

Strategies for coping with viscosity changes

In order to optimize the performance of plastic emulsion dispensers in liquids of different viscosities, designers can consider the following strategies:

Material selection: Select materials with excellent wear resistance and corrosion resistance to reduce the wear of high-viscosity liquids on pump head components and improve their durability.

Structural optimization: By optimizing the structural design of the pump head, reducing flow resistance and enhancing the fluidity of the fluid inside the pump head, the stability of flow control can be improved.

Flow regulation mechanism: The introduction of an adjustable flow control mechanism allows users to adjust the flow output according to the viscosity of the liquid, ensuring an ideal usage experience in different usage scenarios.

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