There are several manufacturing procedures needing to do for ACM panel. Based on the compound process of plastic material core panels and two-sided aluminum panels, it could be separated into cold compound technique and thermal compound technique; it could also be separated into constant compound technique and sporadic compound technique.
The process of manufacturing apolic is to thoroughly clean the aluminum coils first. In the manufacturing of aluminum coils, because of the requirements of the process, the surface area is painted with lubricants and anti-oxidants, and a few dust will be stick while in transport, which will impact its adhesion and should be cleaned out.
Right after clean-up and chemical therapy, the aluminum coil will possess a thick chemical substance protective film on the surface area; this kind of chemical substance film can enhance the oxidation resistance of the aluminum coil and extend the lifetime of the film. The common procedure of cleaning is below:
aluminum coil→ spray degreasing→ water washing→ neutralization→ chemical treatment→ water washing→ drying→ cooling→ winding.
The washed aluminum coil is given to a coating and painted with a good performance fluorocarbon resin on the external surface area of the aluminum coil. The procedure stream is the following:
aluminum coil→ feeding→ coated fluorocarbon coating→ hot air circulation baking paint→ cooling→ filming→ cutting→ winding. The panels of the outside dibond sheet are coated with two coatings of paint and primer. The topcoating of the facade is a highly weather-resistant fluorocarbon resin covering, which is also called polyvinylidene fluoride (PVDF) painting. Its outstanding UV prevention and non-environment pollutants keep the surface area of the protected aluminum coil very nice. The surface area of the ACM panel can have not merely the colour of the metallic, but the wonderful marbled design and colour.
Fluorocarbon coatings are generally placed on aluminum coils by roller coating and then baked at raised temperatures to dried out them. The devices is constantly manufactured automatically: first primed, then upper-coated, and finally coated with a surface varnish. The overall thickness of the 3 storeys paint is 30μm. Every coating of paint must be baked at 200 °C for about around 60s to make it dried out. After coming out of the stove, cool it quickly via the air-cooler. The inside wall paint can be made from epoxy resin, polyester resin and acrylic resin.
After the primer, upper-coat, and surface varnish are covered, instantly implement a PE protecting film on the surface of the coating to prevent scratch the surface area coating during the following producing, transportation, and installation. The protecting film is self-adhesive and could be taken out right after installing.
The aluminum coil painted with fluorocarbon resin can get into the procedure of compounding with the plastic core material. The plastic core material is also basically 3 layers, along with PE plastic material in the centre and adhesive on each edges. PE sheets and adhesives can be made individually or through three-layer extrusion.
First of all, the three-layer co-extruded sheet with the framework of adhesive/PE/adhesive is manufactured, then coupled with the bottom and top aluminum sheets. The aluminium composite material has 0.15mm thick aluminum plate on the two edges, and the core layer is 3～5mm, complete aluminum composite panel thickness is 4～6mm. Lastly cut into 1220 × 2440mm or other specifications according to the customer.
Above are a few information about aluminum composite panel.
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