Manufacturing process of colored aluminum plated octagonal sealed bag

Colored aluminum plated octagonal sealing bag is a packaging solution that combines aesthetics and practicality. Colored aluminum plated octagonal sealing bag is a packaging bag that adopts an octagonal sealing design and has undergone colored aluminum plating treatment. The main manufacturing process of colored aluminum plated octagonal sealed bags includes two steps: vacuum aluminum plating and printing. Colored aluminum plated octagonal sealed bags are widely used in various fields such as food, cosmetics, and electronic products.

The manufacturing process of colored aluminum plated octagonal sealed bags is a complex process that combines multiple technologies and process steps, mainly including raw material preparation, film forming, vacuum aluminum plating, printing, sealing forming, and post-processing. The following is a detailed introduction to these steps:

1、 Raw material preparation

Choose substrate: The substrate for colored aluminum coated octagonal bags is usually plastic film, such as polyester (PET), polypropylene (PP), polyethylene (PE), etc. These materials have good mechanical properties and chemical stability, making them suitable for subsequent processing.

Pre treatment: Before aluminum plating and printing on the film, it is usually necessary to perform pre-treatment such as corona treatment or plasma treatment to improve the wettability and adhesion of the film surface.

2、 Film Forming

Blowing or casting: Depending on the selected substrate, plastic particles are processed into thin films using blowing or casting techniques. The blown film process is suitable for producing thinner films, while the cast film process is suitable for producing thicker films.

3、 Vacuum aluminum plating

Aluminum plating equipment: Vacuum aluminum plating equipment is used, which includes vacuum chamber, evaporation source, heating system, and control system.

Aluminum plating process: Send the pre treated film into a vacuum chamber, vacuum it to pressure, and heat the evaporation source to evaporate the aluminum wire into gaseous aluminum. Gaseous aluminum deposits on the surface of the thin film to form a thin layer of aluminum film.

Cooling and solidification: After aluminum plating is completed, the film is removed from the vacuum chamber and cooled and solidified to ensure a strong bond between the aluminum film and the film.

4、 Printing

Design pattern: Design and produce a printed version according to the customer's requirements.

Printing process: Using techniques such as gravure printing, flexographic printing, or offset printing, colored patterns and text are printed on the aluminum coated film. Attention should be paid to the selection of ink and adjustment of printing parameters during the printing process to ensure printing quality.

5、 Sealing molding

Eight sided sealing design: Design an eight sided sealing mold according to packaging requirements.

Heat sealing or ultrasonic sealing: Use a heat sealing machine or ultrasonic sealing machine to seal and shape the printed film. During the sealing process, it is necessary to control parameters such as temperature, pressure, and time to ensure the firmness and aesthetics of the seal.

6、 Post processing

Cutting and organizing: Cut and organize the sealed packaging bag to remove excess edges and waste.

Quality inspection: Conduct quality inspection on finished products, including inspection of appearance, dimensions, sealing strength, and other aspects. Ensure product quality meets customer requirements.

Packaging and Shipping: Packaging and shipping qualified packaging bags for customer use.

In summary, the manufacturing process of colored aluminum plated octagonal sealed bags involves multiple steps and technical links. Each step requires strict control of process parameters and quality standards to ensure the quality and performance of the product. Meanwhile, with the continuous advancement of technology and the increasing awareness of environmental protection, manufacturing processes are also constantly being optimized and improved.