1. Overview of Aerosol Insecticides
Aerosol insecticides are modern hygiene products that encapsulate insecticide concentrate and propellant within a pressure-resistant canister. Through valve control, they dispense a uniform mist of insecticide. With its high insecticidal efficacy, user-friendly operation, and convenient portability and storage, it has become an essential household hygiene product. As public awareness of home environmental health grows, market demand for aerosol insecticides continues to rise, placing higher demands on production quality and manufacturing processes.
2. Composition and Raw Material Characteristics of Aerosol Insecticides
Aerosol insecticides primarily consist of 3 components:
(1) Insecticide Concentrate
Active Ingredients: Currently, low-toxicity pyrethroid pesticides are predominantly used, such as allethrin, amethrin, cypermethrin, deltamethrin, and cyfluthrin. These compounds exhibit high efficacy, low toxicity, and biodegradability.
Solvent System: Low-boiling-point organic solvents are commonly employed to dissolve the active ingredients and facilitate atomization.
Water Quality Requirements: If the formulation contains water, it must undergo purification to prevent impurities from affecting the stability of the agent and its insecticidal efficacy.
Raw Material Mixing Process: The concentrate must be thoroughly mixed according to precise formulation ratios under controlled temperature and humidity conditions to ensure uniform and stable composition. This is a critical foundational step for guaranteeing the final product's effectiveness.
(2) Solvent
In insecticide aerosol products, the primary function of the solvent is to dissolve the active ingredient and other components while serving as a carrier during the spray application of the active ingredient. Depending on the product formulation, kerosene, ethanol, or deionized water may be used as the primary solvent in insecticide aerosol products.
(3) Propellants
Compressed gases: Examples include nitrogen (N₂), carbon dioxide (CO₂), and nitrous oxide (N₂O). These are environmentally friendly and safe but offer poor spray continuity.
Liquefied gases: Such as difluoromethane, trifluoromethane, etc. (Note: Certain hydrochlorofluorocarbons are being phased out due to environmental regulations). With boiling points below room temperature, they provide sustained and stable spray pressure.
3. Core Production Process Flow for Aerosol Insecticide Filling
A complete and efficient production process is paramount for ensuring the quality and safety of aerosol insecticides:
(1) Concentrate Preparation and Filtration
Active ingredients, solvents, and additives are precisely weighed according to the formulation, thoroughly mixed in a sealed stirring system, and subjected to multi-stage filtration to remove impurities.
(2) Concentrate Filling
The prepared concentrate is quantitatively filled into clean, pressure-resistant cans. Filling precision directly impacts product dosage consistency.
(3) Valve Insertion
Specialized valves (including spray nozzle prototypes) are precisely positioned at the can opening.
(4) Sealing
Aerosol-specific sealing equipment tightly bonds the valve to the can body, forming a sealed system. This step demands extremely high sealing integrity.
(5) Propellant Filling
Under pressurized conditions, inject a measured quantity of propellant into the canister through the valve. This core high-pressure operation demands stringent equipment safety and precision control.
(6) Weight checking and Leak Detection
Use a high-precision weighing system to verify net content per can and conduct preliminary leak detection.
(7) Water Bath Test (Mandatory Inspection)
Immerse filled products in a warm water bath to observe bubble formation. This is a classic and effective method for inspecting container sealing integrity, weld quality, and closure performance.
(8) Drying and Surface Treatment
Dry containers after water bath testing, then attach external nozzles (actuators) and protective caps.
Coding and Packaging: Apply production date, batch number, and other information via inkjet coding. Finally, pack into cartons for storage.
4. Professional Aerosol Filling Equipment Selection Solutions
As a specialized manufacturer of aerosol filling machines, we understand that equipment is central to production efficiency, product quality, and safety. We offer multi-tiered solutions to meet the needs of clients at different stages of development.
(1) Solution One: Suitable for Startups and Small-to-Medium Production Capacity
Recommended Model: Semi-automatic aerosol filling equipment
Core Advantages:
Compact and Efficient: Minimal footprint, ideal for initial factory layouts.
User-Friendly Operation: Intuitive human-machine interface with short training cycles.
Safety & Reliability: Equipped with multiple safety interlocks and overpressure protection.
Cost-Effective: Delivers core functions—automated filling, sealing, and pressurization—within reasonable investment.
Flexible Production: Easy product specification conversion for multi-variety, small-batch manufacturing.
(2) Solution Two: Suitable for Medium-to-Large-Scale Batch Production
QGJ70 automatic aerosol filling line
QGJ120 automatic aerosol filling line
Recommended Model: Fully Automatic Aerosol Filling Production Line
Core Advantages:
High-Speed Continuous Operation: Achieves fully automated high-speed processing from empty can feeding, liquid filling, sealing, gas charging, checkweighing to water bath testing, significantly boosting production capacity.
Labor Reduction: Requires only a few monitoring personnel per line, substantially lowering labor costs and minimizing operational errors.
Stability and Safety: Integrates advanced PLC control systems and sensor networks to ensure stable production processes, data traceability, and high safety protection levels.
Modular Design: Flexibly expand functional modules to accommodate future capacity growth needs.
Additional Equipment Selection Considerations
Raw Material Mixing Process: The liquid must be thoroughly blended according to precise formula ratios under temperature- and humidity-controlled conditions to ensure uniform and stable composition. This is a critical foundational step for guaranteeing the final product's effectiveness.
Equipment must accommodate various specifications (can diameter, height) of steel and aluminum cans along with corresponding valves.
Environmental and Safety Standards: Equipment design must comply with the latest safety production regulations, particularly explosion-proof requirements in propellant filling zones.
After-Sales Service and Technical Support: Suppliers must provide timely installation, commissioning, operator training, and ongoing maintenance services.
Conclusion
The production of aerosol insecticides is a systematic engineering endeavor integrating fine chemicals, precision machinery, and high-pressure safety technology. Selecting the appropriate filling production line is not only crucial for production efficiency and cost control but also the fundamental guarantee for product quality stability and safe factory operations. As a professional filling equipment manufacturer, we will continue to provide customers with comprehensive solutions ranging from process consultation and equipment customization to production optimization. Together with industry partners, we strive to advance the production of sanitary insecticide products toward greater efficiency, safety, and intelligence.
