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Reasons For the Peeling of Aluminum-Plastic Panels

Mar. 17, 2021

Aluminum-Plastic Composite Panel is a new type of decorative material. Because of its strong decoration, rich color, durability, light weight, and easy processing, it has been rapidly developed and widely used at home and abroad.

Aluminum-Plastic Composite Panel

Aluminum-Plastic Composite Panel

The production of aluminum-plastic composite panel is very simple in the eyes of laymen, but in fact it is a new product with high technical content. Therefore, the quality control of aluminum-plastic composite panel products has certain technical difficulties. The following Aluminum-Plastic Composite Panel Suppliers will tell you Share the factors that affect the 180° peel strength of aluminum-plastic composite panels:

The quality of the aluminum foil itself is a problem. Although this is a relatively hidden problem, it has already been reflected in the quality of aluminum-plastic panels. On the one hand, it is the heat treatment process of aluminum materials. On the other hand, some aluminum plates and producers do not strictly control the quality when using recycled aluminum scrap. This requires the producers of aluminum-plastic panels to evaluate the material producers in all aspects and establish business contacts after determining the qualified subcontractors to ensure the quality of the materials.

The problem of pretreatment of aluminum plate. The cleaning and layer quality of the aluminum plate is directly related to the composite quality of the aluminum-plastic plate. The aluminum plate must first be cleaned to remove the surface oil and impurities, so that a dense chemical layer is formed on the surface, so that the polymer film can produce a good bond. However, some manufacturers do not strictly control the temperature, concentration, treatment time, and renewal of the treatment liquid during the pretreatment process, which affects the cleaning quality. What's more, some new manufacturers do not carry out any pretreatment on the aluminum plate and use it directly. All these will inevitably lead to poor composite quality, low 180° peel strength or instability.

The choice of core material. Compared with other plastics, the bonding effect between polymer film and PE is the best, and the price is moderate, non-toxic and easy to process. So the core material is PE. In order to reduce costs, some small manufacturers choose PVC, which has poor bonding effect and produces deadly poisonous gas when burned, or choose PE recycled materials or use PE raw materials to mix with the bottom material. This will result in different composite temperatures due to different types of PE, aging degree, etc., and the final surface will be unstable in composite quality.

The choice of polymer film. Polymer membrane is a kind of bonding material with special properties, it is the main factor that affects the composite quality. The polymer film has two sides and is co-extruded with three layers. One side is bonded with metal, the other side is bonded with PE, the middle layer is PE substrate, and the properties of the two sides are completely different. The material prices on both sides are very different. The materials associated with the aluminum plate shop need to be imported and are expensive. The materials that blend with PE can be produced in China. Therefore, some polymer film manufacturers make a fuss about this and use a large amount of PE fusion materials to cut corners and make huge profits. The use of polymer film is directional, and the front and back sides cannot be replaced. Polymer membrane is a kind of self-decomposing membrane, incomplete melting will lead to false composite. In the early stage, the strength is high and the time is long, the strength will be reduced due to the influence of weathering, and even bubbling or opening of the glue.

I hope the above sharing is helpful to everyone. In addition, the company also provides Fireproof Aluminum-Plastic Panels and mirror aluminum-plastic panels, please feel free to contact us if you need it

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