What does bronzing mean?

Bronzing refers to the bronzing process, and its main material is electrochemical aluminum foil.

Hot stamping technology is a very important post-press processing technology in packaging and printing, which mainly focuses on hot stamping patterns, characters and lines to highlight product names and trademarks. Ang brand beautifies products, thus improving the grade of packaging products. Anodized aluminum hot stamping is also commonly used for post-press processing of hardcover book covers, greeting cards, calendars and other products.

Process principle

Hot stamping technology is to transfer the aluminum layer in anodic alumina to the surface of the substrate by using the principle of hot pressing transfer, forming a special metal effect. Anodized aluminum foil is usually composed of multilayer materials, and the substrate is often P E, followed by separation coating, color coating, metal coating (aluminum plating) and glue coating.

When the anodized aluminum is pressed by the hot stamping plate and the substrate, the anodized aluminum is heated to melt the hot-melt silicone resin layer and adhesive thereon. At this time, the viscosity of the melted silicone resin becomes smaller, while the viscosity of the special heat-sensitive adhesive increases after heating and melting, so that the aluminum layer and the anodized aluminum base film are peeled off and transferred to the substrate at the same time. With the removal of pressure, the adhesive quickly cooled and solidified, and the aluminum layer was firmly attached to the substrate, completing the hot stamping process.

Expand the application of data products

1, ordinary gold, laser gold bronzing.

It can be used for hot stamping on most products, including gold cards, silver cards, laser cards and glass cards, which are widely used.

2, positioning holographic bronzing.

Holographic laser positioning anodized aluminum is a special technical application in design. With corresponding anti-counterfeiting patterns, the anti-counterfeiting ability and quality of products can be greatly improved. This kind of anodic alumina is generally produced in China. Compared with imported goods, the price is cheaper, but the bronzing performance is slightly worse. The location of anodized by holographic laser is closely related to the control of hot stamping temperature, hot stamping pressure, vehicle speed and even hot stamping model.

3. Special application of anodic alumina in the process.

Printing after ironing is a new idea for cigarette label design and printing industry. The application of this process requires highly anodized aluminum. In addition to the requirements of accurate bronzing position, smooth and bright surface, even pressure, no foaming and no paste, special attention should be paid to the obvious indentation on the edge of bronzing pattern, and the bronzing anodized should have good adhesion on the hot stamping surface, and there should be no obvious scratches and scratches.

Baidu encyclopedia-bronzing

Baidu encyclopedia-bronzing process