Aluminum tube production line

The following is a detailed introduction to the aluminum tube packaging material production line:
The main components of the aluminum tube packaging material production line
The aluminum tube packaging material production line is usually composed of multiple key modules, achieving full-process automated production from raw materials to finished products:
Stamping forming machine: Through molds, aluminum discs are stamped into tubular shapes (round tubes), and tube shoulders and tube openings are formed.
Thread processing: Thread processing is carried out at the pipe opening (applicable to aluminum tubes with screw caps).
Cutting and trimming: Cut the aluminum tubes to the required length and trim the edges.
Internal spraying system: A protective layer (such as epoxy resin) is sprayed on the inner wall of the aluminum tube to prevent the contents from reacting with the aluminum.
Curing furnace: Dry the inner coating at high temperature to ensure the coating is firm.
Printing machine: It uses gravure printing to print patterns, text or brand logos on the outer surface of aluminum tubes.
Drying system: Cures printing ink.
Detection system: Automatically detects the size of aluminum tubes, coating uniformity, printing quality, etc.
Packaging machine: Packs finished aluminum tubes into boxes.

2. Core production process

1. Stamping forming
Aluminum sheets are stretched into tube bodies through multi-station presses, and tube shoulders and tube nozzles (such as shoulderless tubes and shouldered tubes) are formed simultaneously. High precision is required, and cracks or uneven thickness need to be avoided.

2. Inner coating treatment
Spray food-grade or medical-grade coatings to ensure safety and corrosion resistance. The coating needs to be uniform and cured at high temperature (usually 180-220℃).

3. Printing and Decoration
It can support multi-color printing and adapt to complex designs. Some high-end production lines are equipped with UV printing or hot stamping processes.

4. Thread and seal processing
The thread of the pipe opening needs to match the cover to ensure sealing. Some aluminum tubes need to be added with sealing films (such as ointment tubes).

3. Technical Features
High degree of automation: From aluminum coils to finished products, fully automatic production can be achieved, reducing manual intervention.
Flexible production: By changing molds and adjusting parameters, aluminum tubes of different specifications (diameters, lengths) can be produced
Environmental friendliness: The aluminium material is recyclable, and the inner coating complies with FDA or EU standards.
High-speed production: The speed of modern production lines can reach 100-300 pieces per minute (depending on the specifications).

4. Application fields
Cosmetics: Face cream, lipstick tubes.
Medicine: Ointments, ointment tubes.
Food: Toothpaste, jam tubes.
Industry: Adhesives, packaging of chemical products.

5. Quality Control

Online inspection: Detect coating defects and printing deviations through a visual system.
Physical tests: sealing performance, compressive strength, thread fit, etc.
Comply with standards: ISO 9001, GMP (pharmaceutical grade), FDA (Food grade).

6. Development Trends

Lightweighting: Reduce the use of aluminum materials and lower costs.
Intelligence: Introduce IoT technology to monitor production data in real time.
Green process: Develop water-based coatings to reduce VOC emissions.