Introduction
Plastic hollow containers are widely used in pharmaceutical, cosmetic, beverage, detergent, lubricant, household chemical, and industrial packaging industries. These containers are commonly manufactured through blow molding processes using materials such as PP, PE, PET, and PC, requiring high-quality surface decoration solutions for branding, product identification, and visual enhancement. With the increasing demand for high-efficiency and automated production, manufacturers are increasingly adopting automatic bottle screen printing machines and automatic inline screen printing machines to achieve faster production speeds, stable printing quality, and reduced labor costs. Featuring a continuous conveyor-based production structure, this type of equipment integrates automatic feeding, precision positioning, multi-color screen printing, and UV curing processes, making it widely known in the industry as a screen printing line or automatic screen printing production line. The system is especially suitable for high-speed printing on plastic bottles, cosmetic containers, beverage packaging, and various hollow containers, providing an efficient and reliable solution for large-scale container decoration.
What Is a Screen Printing Line?
A screen printing line is one of the earliest and most widely used fully automatic screen printing solutions for plastic containers. It remains the most standardized and commonly adopted system in the market due to its high productivity, stable performance, and scalability.
Main Components of an Automatic Screen Printing Line
- Feeding Conveyor System//The feeding system uses a conveyor belt to transport products automatically. Operators can place bottles directly onto the belt, or opt for a customized automatic feeding chute that arranges bottles in order and feeds them into the system efficiently. A suction mechanism transfers each container to the printing station with precision.
- Pre-Treatment Device//Before printing, containers undergo surface treatment to improve ink adhesion. This includes bottle orientation adjustment and treatments such as flame treatment, plasma treatment, or PP oxidizing coating, ensuring high-quality print results.
- Printing System//The printing unit is an upgraded version of semi-automatic screen printers, designed for higher speed and accuracy. It integrates:
- Servo motor control for precise movement
- High-quality pneumatic components
- International brand electrical parts
- Durable steel structure (replacing aluminum profiles for longer service life and better wear resistance)
- These improvements significantly enhance printing precision and machine durability.
4. UV / UV LED Drying System//For high-speed continuous printing, UV inks are widely used. These inks only cure under ultraviolet light, preventing screen clogging and ensuring stable operation. UV or UV LED curing systems provide fast drying, energy efficiency, and consistent print quality.
5. Unloading System//The unloading system can be configured based on production needs. A standard conveyor belt is used for simple output, while advanced systems include robotic arms to automatically arrange printed products neatly for downstream processes.
Application-printed samples
- By shape: can print round bottles, such as common beverage bottles, wine bottles, cosmetic bottles, etc.; oval bottles, such as some special-shaped perfume bottles, special packaging bottles, etc.; square bottles, including cosmetic packaging boxes, medicine boxes, etc.; flat bottles, such as flat sauce bottles, skin care bottles, etc.; conical bottles, such as chemical reagent bottles, etc.; polygonal bottles and special-shaped bottles, such as some creatively designed bottles.
- By material: can print glass bottles, such as red wine bottles, glasses, etc.; plastic bottles, such as plastic beverage bottles, plastic cosmetic bottles, etc.; ceramic bottles, such as ceramic vases, ceramic wine bottles, etc.; metal bottles, such as metal cans, metal oil filters, etc.
Parameter
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- Round-object Max printing stroke: 300mm;
- Oval-object Max Printing stroke: 120mm;
- Round-object Max Printing speed: 4000pc/h;
- Oval-object Max Printing speed: 4500pc/h;
- Work piece size(Round): Diameter:25-100mm;Length:60-300mm;
- Work piece size( Oval): Width:25-260mm, Length:60-300mm;
- Power supply: AC380V,3Phase ,45A/(1-3Colour),100A/(4-5Colour);
- UV Lamp wattage: 4KW/pc;
- UV Exhaust fan wattage: 0.2KW;
- Exhaust rate: 11.6 m3/min;
- Motor Wattage: 0.75KW;
- Reduction gearbox : 1:7.5;
- Feeding motor wattage : 0.75KW;
- Fixture motor wattage : 0.5KW;
- Vacuum Pressure : 500 mm/Ag;
- Flame gas: Liquefied Petroleum gas( LPG);
- Air : 6 Bar;
- Air rate of flow : 1500Lit/M.
- Power: 3 phase 380V,45A/(1-3C),100A/(4-5C);
- 5-7Bar Compress air ;
- Liquefied petroleum Gas, Natural gas
2 colors full automatic screen printing machine//Structure
Key features
- User-Friendly Design & Stable Operation//The machine features a compact structure that is easy to install, adjust, and maintain. Its stable and reliable performance makes it ideal for continuous industrial production.
- Adjustable Feeding Conveyor System//The feeding conveyor is driven by a synchronous motor with stepless speed regulation. The conveyor width can be easily adjusted to accommodate different bottle sizes, ensuring smooth and efficient feeding.
- Automatic Bottle Feeding & Orientation//Equipped with a double suction nozzle system, bottles are automatically transferred to the printing line. An intelligent orientation system ensures all bottles are aligned in a consistent direction before printing, improving accuracy and efficiency.
- Flame Treatment for Better Ink Adhesion//A built-in flame treatment unit enhances ink adhesion on PP and PE materials. The flame intensity and pressure can be flexibly adjusted to suit different materials and printing requirements.
- High-Precision Registration System//The automatic pre-positioning system ensures accurate alignment for multi-color printing, achieving an impressive overprint accuracy of up to 0.08 mm, which is critical for high-quality branding.
- Flexible Printing for Multiple Shapes//By simply changing fixtures, the machine can handle both round and oval bottles, enabling multi-purpose use with one machine, reducing equipment investment.
- Adjustable Printing Mechanism//The screen frame and squeegee support three-dimensional adjustment and angle control, allowing precise positioning to meet different product printing requirements.
- Advanced Control System//The machine combines mechanical transmission with pneumatic control and is equipped with a Japanese inverter for smooth and stable operation. The intuitive touchscreen interface simplifies operation and enhances user interaction.
- High-Speed UV Curing System//An integrated UV or UV LED curing system ensures fast drying, excellent curing quality, and improved production efficiency, with a maximum speed of up to 3600 pieces per hour.
- mart Detection & Safety Features//Electronic sensors enable functions such as: No bottle, no printing/ Low-pressure alarm/ Automatic fault detection
- These features ensure safe operation and reduce material waste.
- Premium Components for Reliability// Key electrical components and control systems are sourced from Germany and Japan, ensuring long-term reliability, consistent performance, and high-quality printing results.
