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How to ensure the quality of the aluminum-plastic panels purchased

Update:02-04-2021
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The base surface of the aluminum-plastic board should b […]

The base surface of the aluminum-plastic board should be dull and flat, and it is easy to use multi-layer boards and blockboard as the bottom layer to avoid cracking and deformation. When posting aluminum-plastic panels, pay attention that the glue must be evenly applied. After the super glue thinner evaporates, you can post it without sticking it by hand. Use a wooden hammer to hit and compact. When using it, pay attention to dividing it into several blocks according to planning requirements. It is not suitable to use the whole sheet or a large area, otherwise it will simply cause the empty drum to open the glue. The joints and grooves in the product application of aluminum-plastic composite panel manufacturers are generally sealed with glass glue. The glass glue must be uniform and full when it is sealed. After drying, the surface should be cleaned and the thickness of the lines should be the same. Aluminum-plastic composite panel manufacturers remind users of the glue seam treatment of aluminum composite panels. In the use of aluminum-plastic panel manufacturers, the existence of glue seams is inevitable, but the existence of glue seams will affect the aesthetics of the installation of aluminum-plastic panels. decorative materials We must find ways to deal with the glue seams to improve the aesthetics of the aluminum-plastic panels. When the aluminum-plastic panel is used to decorate the surface of a building, there are generally gaps of a certain width between the panels.

There are many production processes for marble aluminum composite panels. According to the composite process of the plastic core board and the double-sided aluminum panel, it can be divided into the cold composite method and the thermal composite method; it can also be divided into the continuous composite method and the intermittent composite method. The process of producing aluminum-plastic panels is first to clean aluminum coils. In the production process, aluminum coils are coated with lubricants and anti-oxidants on the surface, and some dirt will adhere to them during transportation, which will affect their adhesion, so they must be cleaned.

It should be installed firmly, its joints should be tight, and the beam deviation should be set according to relevant requirements. The main use of aluminum-plastic panels is curtain wall, indoor and outdoor decoration. Among them, the curtain wall is the external maintenance component of the building, also known as the suspended wall, which does not bear the load of the main structure, but mainly bears its own weight, wind load, earthquake effect and temperature effect. The self-weight is a gravitational load, a constant load that often acts. Due to the low density of the aluminum-plastic plate, the stress generated by the mass is small and does not play a major role.

After the aluminum coil is cleaned and chemically treated, a dense chemical protective film will be formed on the surface; this chemical film can improve the oxidation resistance of the aluminum coil and prolong the life of the paint film. The general cleaning process is as follows: aluminum coil → spray degreasing → water washing → neutralization → chemical treatment → water washing → drying → cooling → winding. The cleaned aluminum coil is sent to the coating machine, and the outer surface of the aluminum coil is coated with high-performance fluorocarbon resin. The process flow is as follows: aluminum coil→feeding→coating fluorocarbon coating→hot-air circulation baking varnish→cooling→filming→cutting→winding the outer wall aluminum composite panel to be coated with two top coats and primers.

The topcoat of the exterior wall panel is a fluorocarbon resin coating with extremely high weather resistance, namely polyvinylidene fluoride (PVDF). Its excellent anti-ultraviolet performance and anti-environmental pollution make the surface of the protected aluminum coil maintain brilliant colors . The surface of the aluminum-plastic composite panel can not only have the color of metal, but also have beautiful marble patterns and colors. Fluorocarbon coatings are usually applied to aluminum coils by roller coating, and then baked at a high temperature to dry them. The equipment is continuous production. First coat primer, then top coat and surface varnish. The total thickness of the three layers of paint is up to 30μm, and each layer of paint needs to be baked at a temperature above 200°C for about 60 seconds to dry it, and then quickly cooled by an air cooler after leaving the oven.

 

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