Wholesale Customized Top Quality Plastic Screw Pump for Lotion Cream Liquid

1. Product Overview
Threaded pumps are liquid dispensing devices widely used in the cosmetics, personal care, and household cleaning industries. They are primarily used for packaging products such as lotions, serums, shower gels, and shampoos. Their core feature is a screw-type fastening to the bottle neck and a push-type piston mechanism for precise, controlled liquid dispensing, combining convenience with a tight seal.

2. Structure and Operating Principle
Press head: The pump element is activated when the user presses down, and automatically resets when released.

Pump body and locking cap: Threaded (such as standard specifications like 28/410 and 24/410) screws onto the bottle neck to ensure a secure seal.

Piston and spring: Control unidirectional liquid flow, preventing backflow and leakage.

Strut: Extends to the bottom of the bottle to ensure full liquid utilization.

During operation, pressing the pump head creates negative pressure, drawing liquid through the suction tube and discharging it through the pump chamber and out the outlet. When released, the spring resets, closing the valve and preventing air ingress and leakage.

3. Product Features
✔ Precise Dosing: Each press dispenses a consistent amount of liquid (e.g., 0.2ml, 0.5ml, 1ml, etc.), eliminating waste.
✔ High Sealability: Built-in silicone gasket or double valve design prevents leaks and evaporation, extending product shelf life.
✔ Compatible: Compatible with liquids of varying viscosities (from liquids to lotions) and supports a variety of bottle neck sizes (e.g., plastic and glass).
✔ Safety and Hygiene: Complies with FDA and EU standards, and some models feature tamper-evident features (e.g., childproof locks).
✔ User-Friendly: One-handed operation ensures smooth dispensing, making it suitable for everyday use, such as skincare and disinfectant.

4. Applications
Beauty and Personal Care: Serums, toners, sunscreen sprays.

Household Cleaning: Hand soap, dishwashing liquid, disinfectant.

Pharmaceutical: Topical medications, disinfectant gels.

5. Advantages Summary
Threaded pumps, with their cost-effectiveness, reliable sealing, and convenient operation, have become the preferred dispensing system for liquid packaging. They are particularly well-suited for industries requiring precise dosage control and maintaining product freshness.