After coating the aluminum foil is a surface treatment on the basis of non-coated aluminum foil formed, in addition to having the above non-coated aluminum foil required chemical composition, mechanical properties and geometry and other performance indicators, it should also have a good plate and coating performance.

1, aluminum plate type:

First, the coating of aluminum foil production process have a good plate of aluminum foil, which is a prerequisite for the coating of aluminum foil production. Indicators to measure plate unit is I. General plate coating production equipment requirements are less than 20-40I, if greater than this value, you need to add a coating apparatus before the tension leveler system. Its aluminum coating equipment running routes are generally long treatment process and guide roller is greater.

Therefore, if you are not equipped with tension leveling system, once the plate appears not easily run plays off, preventing the production. Air conditioning production process of aluminum foil plate also have higher requirements. General heat sheet punching production line uses vacuum suction way transfer foil, aluminum foil if the plate is not good, the surface is not smooth, it will lead the way aluminum foil vacuum blower can not be normal. Thus, the plate is not only a coating of aluminum foil, an important technical indicators are also non-coating of aluminum foil.

2, coating properties:

As mentioned above there are many types of heat transfer sheet with aluminum foil coating, foil coating used on the market today are mainly hydrophilic aluminum foil, so here only for the hydrophilic aluminum foil coating performance indicators discussed.

3, coating thickness:

Film thickness aluminum foil surface is not hard regulations, generally in the 3 / 1m or less. From paint prices are generally more expensive, so the premise of meeting the performance requirements of the more thin film thickness control, lower production costs. Coating thickness directly affects the performance of the coating, thus requiring the coating to the surface of the aluminum foil thickness uniform.

4, coating adhesion:

Coating adhesion is adhesive foil fastness indicators and their surface coatings. If the coating adhesion is too small, the coating of aluminum foil in the further processing and use, it is easy to fall off the surface of the film, which would seriously affect the weight of the coating of aluminum foil, thus requiring the stronger the better coating adhesion. Coating adhesion generally only qualitatively detect the main detection methods are abrasion test, cut test and cupping method.

5, hydrophilic properties:

Hydrophilic aluminum foil in use for some time, because by leaving the role of various environmental factors hydrophilic properties of the surface is affected. Thus, hydrophilic properties are generally divided into hydrophilic properties after initial hydrophilicity and resistance to environmental testing. Hydrophilic performance has mainly to measure the size of a corner. General product requirements early hydrophilic a <100, after the hydrophilic environment resistance test requirements a <250. A contact angle measurement can use a dedicated contact angle measurement; also a certain amount of volume by water droplets in the size of the area occupied by the aluminum foil surface will be calculated.