A very modern, colorful, lightweight and durable new decorative materials are rapidly coming into our lives, which is the new generation of decorative and curtain wall materials ------- aluminum composite panels (aluminum composite panels) that only rapidly emerged in the mid-1990s of the 20th century.
But because the market is bullish, in recent years there have been a lot of aluminum composite panel shoddy products, triggering many quality accidents and causing considerable losses. Some common quality problems include: thinning aluminum plate is a fairly common problem The strength of aluminum-plastic composite panels to a large extent by the aluminum plate to bear, the aluminum plate is too thin, the product strength is very low, easy to deformation, and even endanger personal safety. Domestic aluminum plate is sold by weight, so many manufacturers are desperately trying to reduce the thickness of the aluminum plate to increase the length of the aluminum coil, as a way to reduce costs.
Use the inner wall panel as the outer wall panel The aluminum of the outer wall panel should be rust-proof aluminum, and the surface paint should be the fluorocarbon paint with the best international recognition of aging resistance, so as to ensure that the product has a long-term service life in the sun and rain outdoors. However, some of the interior wall panels are used as exterior wall panels, and some use non-fluorocarbon paint to pretend to be fluorocarbon paint, which seriously shorten the life of the product and cause unnecessary economic loss.
Product bulging and opening The bulging or aluminum plate peeling can be obviously observed on the surface of the product, some of them appear after a period of use. There are many reasons for this, such as poor bonding, contamination of raw materials, use of poor quality raw materials, bubbles brought into the production process, etc., which can affect the appearance of the product and the safety of use. The choice of core material The core material of aluminum-plastic composite is polyethylene and not polyvinyl chloride, because polyvinyl chloride in the burning will produce strong and deadly poisonous gas, so it has not been used in the country. Some manufacturers use recycled materials with complex composition, which are not strictly sorted and processed, and have more impurities, so the quality of products is not stable.
The choice of bonding materials As polyethylene is difficult to bond directly with the aluminum plate, so a layer of bonding layer should be used, at present, a special plastic film is usually used, this film has two sides, one side can be bonded with metal aluminum, the other side can be bonded with polyethylene. The material of the bonding surface with the aluminum plate needs to be imported and is expensive, so if it is mixed to make false, it will cause the product to be compounded badly. In addition, individual manufacturers use poor quality glue bonding, in order to facilitate the application of glue, often to the glue to add some organic thinner, these thinners are sealed between the aluminum plate and the core material, it is difficult to evaporate thoroughly, on the one hand, affect the bonding performance, on the other hand, the indoor air will cause some pollution