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Introduction
Plastic hollow containers are widely used in industries such as pharmaceuticals, cosmetics, detergents, lubricants, beverages, daily necessities, and chemical packaging. These containers are typically made from materials like PP, PE, PET, and PC through blow molding processes. With the growth of large-scale manufacturing, more factories are adopting automatic screen printing machines to improve efficiency and consistency in product decoration. Due to its continuous, conveyor-based structure, this type of equipment is often referred to as a “screen printing line” or “screen printing dragon.”
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.
1. 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.
2. 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.
3. Printing System
The printing unit is an upgraded version of semi-automatic screen printers, designed for higher speed and accuracy. It integrates:
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.
• 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
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.
3D 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.
Smart Detection & Safety Features
Electronic sensors enable functions such as:
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.
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