1. Project Introduction
As demand for personal safety and self-defense products continues to create opportunities in the aerosol industry, manufacturers need reliable and flexible production equipment to support different product specifications.
To meet the production requirements of a Brazilian customer, Guangzhou Wejing Intelligent Equipment Co., Ltd. provided a customized multi-size aerosol filling line for chili spray production.The complete production line integrates empty can feeding, automatic valve insertion, aerosol filling and crimping, weight checking, water bath leak testing, automatic cap pressing, coding conveyor, and material storage.
Designed to accommodate multiple aerosol can specifications, this solution helps the customer establish a more efficient and organized production process while maintaining consistent product quality.
2. Core Client Requirements
During the project discussion, the Brazilian customer focused on several important production requirements:
(1) Multi-Size Production Capability
The customer required one production line capable of handling multiple aerosol can specifications.The equipment needed to accommodate different can sizes(35mm,38mm,45mm,66mm)
(2) Stable Filling and Sealing Quality
As the filling and crimping process directly affects product quality, the customer required precise control of crimping height and diameter.
The specified dimensional tolerance was ±0.1 mm.
The customer also emphasized that cans and valves should remain free from deformation or damage after sealing.
(3) Reliable Inspection System
The production line needed integrated inspection equipment, including an automatic checkweigher and a water bath testing machine.
These systems help identify products outside the preset weight range and inspect aerosol cans for potential leakage.
(4) Automated Packaging Preparation
The customer wanted automatic cap feeding and pressing, together with a suitable conveyor area reserved for inkjet coding.
This would facilitate the subsequent packaging process and reduce manual handling.
(5) Operational Safety and Convenience
The customer also required English equipment labels, safety door interlocks, and conveniently positioned emergency stop buttons to improve operator safety and equipment usability.
3. Customized Aerosol Filling Line Solution
Based on the customer's requirements, Wejing configured a complete aerosol filling production line covering the main production and inspection processes.
The solution includes the following equipment:
(1) Empty Can Feeder
Automatically organizes and continuously feeds empty cans to the production line.
The feeding process is designed to minimize can tipping and interruptions, ensuring a stable supply for subsequent operations.
(2) Automatic Valve Inserter
Automatically arranges, feeds, and positions aerosol valves.
The system is designed to ensure correct valve orientation and accurate positioning, reducing missing or incorrectly placed valves.
(3) Aerosol Filling and Crimping Machine
As the core equipment of the production line, this machine performs aerosol product filling and valve crimping.
Key considerations include:
l Controlled crimping height and diameter
l Specified dimensional tolerance of ±0.1 mm
l Stable filling and sealing operations
l No visible can or valve deformation after crimping
l Leak-free material pipeline connections
l Production speed meeting the agreed project requirements
(4) Automatic Checkweigher
The automatic checkweigher monitors the weight of filled products.
Its main functions include:
l HMI-based upper and lower weight limit settings
l Automatic product weight inspection
l Identification of products outside the preset range
l Automatic rejection of nonconforming products
(5) Water Bath Leak Testing Machine
The water bath testing machine provides an inspection process for aerosol cans.
For this project, the agreed FAT inspection parameters included:
l Water temperature: 48–55°C
l Immersion time: 3–5 minutes
l Effective drying after testing
l These parameters were checked according to the project requirements.
(6) Automatic Cap Pressing Machine
Automatically feeds, positions, and presses caps onto aerosol cans.
The equipment is designed to accommodate multiple can specifications while minimizing deformation, scratches, and other surface damage during cap installation.
(7) Coding Conveyor
Provides a stable conveying area for subsequent inkjet printing.
Sufficient space is reserved for the installation of an inkjet printer, allowing production dates, batch numbers, and other product information to be printed.
(8) Stainless Steel Material Storage Tank
The material storage tank is manufactured from stainless steel and connected to the filling machine through a dedicated pipeline.
Tank capacity is configured according to the customer's production requirements, with particular attention to material supply and leak-free pipeline connections.
4. Factory Acceptance Test (FAT) in China
Before shipment to Brazil, the customer visited our factory to conduct a Factory Acceptance Test (FAT).
Our team first welcomed the customer at the office, where both parties had time to discuss the project and review the equipment arrangements.
Afterwards, the customer was guided to the production workshop, where our engineers demonstrated the complete aerosol filling line in operation.
Following the overall production demonstration, the customer inspected each machine individually and raised detailed technical questions.
Our engineers explained the working principles, operating procedures, and key inspection points of each machine.
The FAT focused on several important aspects:
l Continuous and stable empty can feeding
l Correct valve feeding and positioning
l Filling and crimping accuracy
l Weight inspection and automatic rejection
l Water bath temperature and immersion time
l Automatic cap feeding and installation
l Pipeline connections and leakage inspection
l Compatibility with multiple aerosol can specifications
This step-by-step inspection allowed the customer to understand the actual operation of the production line and verify important technical requirements before shipment.
5. Safety Improvements and Customer Feedback
During the FAT process, the Brazilian customer also provided several suggestions to further improve equipment operation and workplace safety.
The main requirements included:
l English Equipment Labels
All equipment labels, operation instructions, and necessary warning signs should be provided in English for easier understanding by local operators.
l Safety Door Interlocks
Safety interlocks were requested for the relevant protective doors so that opening a door would stop the associated hazardous machine movements as designed.
l Emergency Stop Button Positioning
Emergency stop buttons should be installed in accessible positions near operator working areas, allowing personnel to stop the equipment quickly in an emergency.
Our engineering team recorded these requirements for follow-up implementation and verification.
6. Project Highlights
This Brazilian chili spray aerosol filling line project demonstrates our ability to provide customized production solutions based on different customer requirements.
Key project highlights include:
Multi-Size Compatibility: One production line designed to accommodate multiple aerosol can specifications.
Integrated Production Process: Equipment covering can feeding, valve insertion, filling, crimping, inspection, cap pressing, and coding preparation.
Quality Inspection: Integrated weight checking and water bath leak testing processes.
Customized Configuration: Equipment arrangements and functions designed around the customer's production requirements.
Factory Acceptance: On-site FAT with customer participation and engineer-led technical explanations.
Operator Safety: English labels, safety door interlocks, and accessible emergency stop controls incorporated into the project requirements.
7. Project Outlook
A successful aerosol filling line project requires more than supplying individual machines. It involves understanding the customer's product specifications, coordinating the complete production process, and verifying equipment performance before delivery.
Through customized equipment configuration and factory acceptance testing, Wejing aims to provide reliable aerosol production solutions for customers in Brazil and other international markets.
We look forward to supporting the customer's chili spray production with this multi-size aerosol filling line and providing continued technical assistance throughout the equipment lifecycle.
8. About Wejing
Guangzhou Wejing Intelligent Equipment Co., Ltd. specializes in aerosol filling machines, automatic aerosol filling lines, and customized filling solutions.
We provide equipment design, manufacturing, factory acceptance testing, installation guidance, and after-sales technical support for global aerosol manufacturers.
Whether you are planning a new aerosol production facility or upgrading an existing production line, our engineering team can help develop a suitable solution based on your product type, container specifications, and production capacity requirements.
Contact Wejing to discuss your aerosol filling line project.
