XY-PT-⊘15JDGB 15mm Crimp perfume fine mist pump sprayer high type

How to avoid leakage when producing 15mm clip-on perfume mist pump high nozzle?

In the process of producing 15mm clip-on perfume mist pump high nozzle, the avoidance of leakage problems needs to be systematically controlled from multiple links such as material selection, structural design, production process control, quality inspection, etc., to ensure that each link can accurately meet the sealing requirements of the product. The following is an explanation from specific dimensions:

1. Material selection: Build a solid sealing foundation

The adaptability of the material is the primary prerequisite for avoiding leakage. The sealing, corrosion resistance and compatibility of the material with perfume ingredients must be considered at the same time.
Core sealing component materials: For key seals such as sealing rings and valve discs in the pump head, elastic materials that are resistant to corrosion by perfume ingredients (such as alcohol, flavors, etc.), such as food-grade silicone or nitrile rubber, should be selected. This type of material has excellent elastic recovery ability and can maintain good sealing under long-term pressure to avoid gap leakage caused by material aging or swelling. At the same time, the hardness of the material needs to be accurately measured. Too hard will cause the sealing surface to not fit tightly, and too soft may deform during assembly or use, affecting the sealing effect.
Main structural material: If the pump head shell, piston and other structural parts are made of plastic, high-strength and dimensional-stable engineering plastics (such as POM or PP) should be selected to avoid structural gaps after molding due to excessive material shrinkage; if metal parts are involved (such as the metal connector of the 15mm crimp pump head), it is necessary to ensure that its surface treatment process (such as plating) can effectively isolate the erosion of perfume ingredients and prevent sealing failure caused by metal corrosion.
Zhangjiagang XinYe Chemical Sprayer Co., Ltd pays attention to the strict selection of materials when producing perfume bottle nozzles. Combined with its technical accumulation in aluminum oxide surface treatment and other links, it can provide reliable support for the material selection of 15mm pump heads and reduce the risk of leakage caused by material problems from the source.

2. Structural design: Optimize sealing form

The structural design of the 15mm crimp pump head needs to focus on the core goal of "tight sealing surface and uniform pressure distribution", and focus on optimizing the following key parts:
The connection structure between the snap and the bottle body: The sealing performance of the snap design depends on the matching accuracy between the snap and the bottle body and the bottle mouth. It is necessary to simulate the stress state of the buckle through 3D modeling to ensure that the buckle can form a uniform radial pressure on the bottle mouth after buckling, and avoid gaps caused by insufficient local pressure. At the same time, the number of teeth and inclination angle of the buckle must match the bottle body with a diameter of 15mm, and the buckling depth should be verified by multiple tests to ensure that the connection is firm and the sealing effect can be enhanced through appropriate interference fit.
Valve system structure inside the pump body: The one-way valve in the pump head (such as the suction valve and the discharge valve) is the key to preventing liquid backflow and leakage. The contact surface between the valve disc and the valve seat should be designed as a smooth plane or arc surface to ensure that it can fit completely under pressure; the elastic coefficient of the valve disc must match the working pressure of the pump head, which can ensure smooth opening during normal spraying and rapid closing when stopping spraying, avoiding dripping caused by delayed closing. In addition, the matching clearance between the piston and the pump barrel must be controlled at the micron level, and the possibility of liquid seeping from the gap can be reduced through precise tolerance design (such as using the matching accuracy of H7/g6).
Sealing transition of the spray channel: The spray channel from the pump body to the nozzle should avoid structures that are prone to turbulence and liquid accumulation, such as right angles and sharp angles. A smooth arc transition design should be adopted to reduce the risk of liquid residue and leakage in the channel. At the same time, a sealing ring groove can be added to the connection between the nozzle and the pump body to further enhance the seal by embedding the sealing ring. The size of the groove must be precisely matched with the diameter of the sealing ring to prevent the sealing ring from deforming due to over-tightening or falling off due to over-loosening.

3. Production process control: ensuring manufacturing accuracy

The process stability during the production process directly affects the sealing performance of the pump head, and strict parameter control needs to be implemented for each processing link:
Injection molding process: For the plastic parts of the pump head (such as the pump body and piston), the temperature, pressure, holding time and other parameters during the injection molding process need to be precisely controlled. Excessive temperature will cause material degradation and affect dimensional stability; insufficient pressure may cause the product to be incompletely filled, produce shrinkage holes or bubbles, and destroy the flatness of the sealing surface. By adopting advanced injection molding equipment and real-time monitoring systems, the dimensional tolerance of each component can be controlled within the design range (such as the flatness error of the key sealing surface does not exceed 0.02mm), laying the foundation for the sealing of subsequent assembly.
Processing and surface treatment of metal parts: If the 15mm pump head contains aluminum parts (such as the nozzle housing), the aluminum stamping process needs to ensure the dimensional accuracy of the parts to avoid structural dislocation caused by stamping deformation; the aluminum oxide surface treatment process needs to control the thickness and uniformity of the oxide film, which not only enhances the corrosion resistance of the parts, but also ensures that the mating surface with other parts is smooth and flat, and reduces the gap caused by excessive surface roughness.
Automated assembly process: During the assembly process, the installation position and compression amount of the sealing ring are the key to affecting the sealing effect. The use of automated assembly equipment can avoid errors in manual operation, ensure that the sealing ring is accurately embedded in the groove, and the compression amount is controlled within the design value (usually 15%-25% of the diameter of the sealing ring), so that the sealing will not be loose due to insufficient compression, nor will the sealing ring be permanently deformed due to excessive compression. At the same time, it is necessary to avoid bumps and scratches on the components during the assembly process, especially damage to the sealing surface, which may directly lead to leakage.

4. Quality inspection: intercept defects throughout the entire process

Establishing a quality inspection system covering the entire production process can timely discover potential leakage hazards and prevent unqualified products from entering the market:
Parts entry inspection: Dimensional accuracy inspection (such as using a three-coordinate measuring instrument) and material performance sampling inspection (such as perfume immersion test) of purchased or self-made sealing rings, plastic parts, metal parts, etc. to ensure that the parts meet the design requirements and prevent leakage caused by raw material defects.
Sealing test during assembly: Set up inspection stations at key nodes of the automated assembly line to perform pressure tests on semi-finished pump heads. For example, inject a certain pressure of gas into the pump head (simulating the state after perfume filling), immerse it in water to observe whether bubbles are generated, or monitor the pressure decay rate through a pressure sensor. If the pressure drop exceeds the set threshold, it is determined that the seal is unqualified and the cause needs to be immediately investigated.
Finished product sampling and life testing: Sampling tests are conducted on the final finished products, including spray tests that simulate actual usage scenarios (such as checking for leaks after pressing continuously for 1,000 times), aging tests in high temperature and high humidity environments (testing the sealing performance after being placed in an environment of 40°C and 90% humidity for 72 hours), etc., to ensure that the product can maintain good sealing performance under different usage conditions.