Aluminum -plastic board knowledge — characteristics of aluminum -plastic board and production process I. The characteristics of aluminum -plastic boards:
Aluminum -plastic plate is a new type of decorative material. Compared with other decorative materials, it has many unparalleled superiority. On the one hand, aluminum plastic boards are a composite material, which can obtain new properties that many original components are obtained through composite.
On the other hand, aluminum -plastic boards are a high -tech product. Whether it is production or application, it contains high technical content.
Many advanced processes are used in production, such as rolling coating technology and continuous thermal composite technology, ensuring the full play of material performance.
The main features of aluminum plastic boards are manifested in the following aspects.
1. Small quality:
Aluminum -plastic plates are composed of plastic core materials with less aluminum and density, so compared with aluminum (or other metals) with the same rigidity or thickness, their quality is small than glass and stone. The quality is even more quality. It's much smaller.
2. Good rigidity:
The aluminum -plastic board cleverly uses the mechanical principle of the steel structure of the steel, and the clever hunger gives it unique mechanical properties. In addition, aluminum plastic boards achieve compound under high temperature conditions, and the two -layer aluminum plate of aluminum plates in the entire processing process is certain to certain In the state of tension, when the type of cooler is cooled, because the symmetrical aluminum plate and the core material are produced in the contraction rate, the internal stress of the board is stable and has a good rigidity. Compared with single -layer aluminum plates, its elasticity limit is large, it is not easy to produce deformation. In a natural state without much external force, it can maintain good flat performance for a long time.
3. Rich color and strong decorative:
The level of aluminum plastic board can be made into a variety of colors to carry out pattern design that matches all uses.
In addition, in order to use photographic copy technology simulation patterns, granite, wood grain, and metal patterns, it provides a pattern design with a monochrome, precision texture and high -quality pattern design. The rich color and pattern design meet the coordination that meets the requirements of different environment, enabling different architectural styles to be compatible with the environment, the selected color and environment are harmonious, and the overall artistic effect is perfect. Visual enjoyment. The curtain wall decorated with aluminum plastic panels is not inferior to the gorgeous glass curtain wall and elegant stone curtain wall.
Under the sun, its level is gorgeous and dignified, and at the same time avoid light pollution.
4. High surface flatness:
Aluminum -plastic boards are produced by continuous hot and compound production processes. Therefore, compared with a single material metal plate, its surface flatness is high, especially large -sized plates are more obvious. For building decoration, it has a flat and flat appearance.
5. Good durability:
The aluminum -plastic plate uses metal and core material thermal composite technology, which is firmly bonded. The surface coatings are selected from different materials according to the different use environment. Generally, three types of coatings are used, namely fluorocarbon coatings, polyester coatings, and acrylic coatings. Carbon coatings have better weather resistance and are mostly used in curtain wall decoration and specific occasions. Test studies have shown that they can be used for more than 20 years in harsh outdoor environments.
6. Good processability:
Aluminum -plastic plates are composed of aluminum and plastic. It is easy to process cutting, punching, digging, and bending. It can be processed with aluminum or woody processing equipment. Therefore, not only can be processed in the production plant, the proposed composite board can be processed on -site.
7. Excellent fire resistance:
In the aluminum -plastic board series, the fire -resistant aluminum plastic board uses a newly developed core material. This core material is filled in the filling feather. Require.
8. Good cost characteristics:
The production of aluminum -plastic boards adopts the continuous heat composite process of pre -coating and the metal/core material. Compared with the general metal veneer, the production efficiency is high and the cost of raw materials is low. It is a material with good cost characteristics.
9. Good environmental coordination:
The aluminum and plastic core in the abandoned aluminum -plastic plate can be used 100%for regeneration, and the environmental load is low.
In addition, the wood -aluminum plastic plate and outdoor decorative aluminum plastic plate uses fluorocarbon coatings. The products have high durability and low daily maintenance costs, reducing the cost of the entire life cycle.
10. Wide use:
Aluminum -plastic panels are cost -effective and widely used. In addition to the decoration of curtain walls, inner and outer walls, hall halls, restaurants, shops, conference rooms, etc., it can also be used for the reconstruction of old buildings. Inner and outer walls, etc.
Second, aluminum -plastic board production process:
There are many production processes of aluminum -plastic plates. The composite process of plastic core board and two -sided aluminum plates can be divided into cold compound legal and hot compound legal; it can also be divided into continuous compound legal and intermittent compound legal.
The process of producing aluminum plastic plates is first to clean aluminum coils. Due to the needs of the production of aluminum coils, the surface is coated with lubricants and anti -oxidants, and some dirt will also be attached during transportation, which will affect its adhesion, so it must be cleaned. After the aluminum coil is cleaned and chemically treated, the surface will produce a dense chemical protective film; this layer of chemical film can improve the antioxidant capacity of aluminum coils and extend the life of the paint film.
The general process of cleaning is as follows: aluminum rolls → spraying abandonment → water washing → neutralization → chemical treatment → water washing → drying → cooling → receiving rolls.
The clean aluminum coil was sent to the coating machine and coated high -performance fluorocarbon resin on the surface of the aluminum coil. The process process is as follows:
Aluminum rolls → feeding → coating fluorocarbon coatings → hot air circulating paint → cooling → covering → cutting → collection.
The panel of the outer wall aluminum plastic plate should be coated with two layers of paint and primer. The surface paint of the outer wall plate is a fluorocarbon resin coating with extremely high weather resistance, that is, polyfront diofluoroethylene (PVDF). Its excellent anti -ultraviolet performance and anti -environmental pollution can keep the protected aluminum coil surface. Essence The surface of the aluminum -plastic composite board can not only have metal colors, but also beautiful marble patterns and colors.
Fluorocarbon coatings usually apply roller coating methods to aluminum coils, and then baked at high temperature to dry it. The equipment is continuous production, first paint paint, then paint paint, and finally coat the coatings. The total thickness of the three layers of paint is 30 μm. Each lacquer needs to be baked for about 60s above 200 ° C to dry it. After the oven is released, it quickly cools through the air -cooled machine.
The inner wall paint can use epoxy resin, polyester resin and acrylic resin. After the paint, top paint, and surface paint are painted, a layer of PE protective film is pasted on the coating layer surface to avoid being scratched during the processing and transportation and installation of the surface coating.
The protective film is self -mucous membrane, and it can be unveiled after installation.
Aluminum coils with fluorocarbon resin can enter the process of compounding with plastic core materials. The plastic core is essentially three layers, the middle is PE plastic, and the two sides are adhesives. PE sheets and adhesives can be produced separately, and can also be produced in three layers of commonly squeezed out.
The three -layer co -produced sheet of the archaea/PE/adhesive is compounded with the upper and lower layers of aluminum plate. The composite aluminum -plastic composite plate is 0.15mm thick aluminum plate on both sides, and the core layer is 3 to 3 ～ 5mm, the total thickness is 4-6mm. Finally cut into a 1220mm × 2440mm specification.