Thick anodized aluminum foil is 12,16,18,20μm, 500 ~ 1500mm wide polyester film (domestic general use 16μm thick, 500mm wide film) coated with a release layer, the color layer by vacuum aluminum coating glue again layer, and finally through the finished rewinding made of. Domestic anodized aluminum foil is usually 4 to 5 layers.

The first layer is anodized aluminum foil base film

Domestic generally use 16μm thick biaxially stretched polyester film; the main role is to support attached to the top coat and facilitate continuous operation of stamping machining. Base film can not be deformed due to the temperature rise in the stamping process, should have the strength, tensile strength, high temperature properties.

Anodized aluminum foil layer from the second layer

Usually a silicone resin coating formed. Major role in stamping (heat and pressure), the make pigment, aluminum layer, can quickly be transferred from bonded polyester film on the surface of the object to be stamping. Detachment from the floor to have a better performance, otherwise it would be after stamping graphic vague blur exposed at the end, affect product quality stamping.

Some anodized aluminum foil products in the production of no release layer, the use of the basement membrane adhesion to laminin smaller color or adding an appropriate amount of material from the material in the pigment that colors the color layer that is able to react again to play out the role. This is the four-layer structure of anodized aluminum.

The third layer is the color layer of foil

The major components of the film-forming property, heat resistance and transparency suitable synthetic resin and dye. The main role of the color layer has two, one display color; the second is to protect stamping is not oxidized at the surface of the aluminum layer graphic items. Anodized aluminum foil color according to the need orange, yellow, gray, red, green and other. Color color layer through the aluminum layer after giving gloss, color has some changes, such as yellow after aluminum for gold, silver and other post-gray aluminum. Coating of the colored layer is fine without any requirement of small particles, in order to avoid destruction of trachoma and uniform coating.

The fourth layer is anodized aluminum foil layer

The coated film of the colored layer or the like, aluminum disposed inside the vacuum chamber continuously, in a certain degree of vacuum, by resistance heating, the aluminum wire is melted and continuously evaporated to the colored layer film, the aluminum layer is formed. The main role is to reflect light, to change the nature of the colored layer colored, and it exhibits no luster.

The fifth layer is anodized aluminum foil adhesive layer. Fusible adhesive layer is generally used a thermoplastic resin (which have a variety of species), by coater on the aluminum layer, the adhesive layer after drying Serve. The main role of the adhesive layer is to be hot stamping adhesive material on the subject.

One of the reasons is not the finest hot stamping phenomenon occurs, there is a different adhesive layer, poor coating. Various types of foil adhesive layer is different, so choose the anodized aluminum foil condemnation should be based on the actual situation and other hot material.