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SHINGKWANG is a professional aluminum composite panel (ACP) manufacturer located in China, offering wholesale and OEM services. Our aluminum composite panels boast a wide range of coating types, core structures, and premium finishes, making them ideal for exterior, interior, and signage projects. Understanding the detailed production process helps architects, contractors, and distributors ensure product quality and select the right panels for their projects.
Raw Material Selection
The aluminum composite panel consists of two layers of aluminum sheets bonded to a core. We adhere to stringent standards in screening each component to ensure the final product offers superior performance, durability, and safety.
Aluminum Coils: We use high-quality 3000 or 5000 series aluminum coils (thickness range from 0.15mm to 0.5mm). These coils offer excellent corrosion resistance, bending performance, and surface smoothness.
Core Material: The appropriate core material is selected based on different applications, such as interior decoration, exterior cladding, or signage.
- Solid Core: High strength and impact resistance.
- Broken Core: Lightweight and flexible, suitable for standard applications.
- Fireproof Core: Certified flame-retardant material meeting high safety requirements.
Adhesive: We use high-performance polyurethane (PU) adhesive, which ensures a strong bond between the aluminum sheet and the core material, preventing delamination even in extreme environments such as high temperature, low temperature, and high humidity.
Aluminum Sheet Pretreatment
The aluminum sheet undergoes surface pretreatment before coating to ensure the durability and performance stability of the coating.
Cleaning: Removes dust, grease, and oxides.
Etching: Enhances adhesive strength.
Conversion Coating: Improves corrosion resistance and paint adhesion.
Aluminum Coil Surface Treatment
The surface treatment of the aluminum coil not only determines the appearance of the aluminum composite panel but also improves its resistance to external factors such as sunlight, rain, and pollution. We offer a variety of surface treatment processes to meet different customer needs:
- PE Coating: Cost-effective and ideal for indoor and short-term outdoor applications.
- PVDF Coating: Excellent weather resistance, suitable for long-term outdoor use.
- Nano Coating: Self-cleaning with excellent stain and chemical resistance.
4. Composite Lamination
The composite lamination process is a crucial step in combining surface-treated aluminum sheets with core materials to form a complete aluminum composite panel. We employ advanced continuous lamination production lines to ensure product stability and consistency.
Core Material Preparation: First, the core material is extruded into sheets of the required thickness (typically 2mm to 5mm) using an extruder, and then cut to the appropriate width according to the production plan. For flame-retardant core materials, we also perform preheating treatment to ensure better adhesion to the aluminum sheet.
Adhesive Coating: The prepared core material is fed to an adhesive coating machine, where a layer of polyurethane adhesive is evenly coated on both sides. The amount of adhesive used is strictly controlled (typically 80g/m² to 120g/m²) to ensure sufficient bonding strength while preventing adhesive overflow.
Lamination Pressing: The aluminum sheet and core material are simultaneously fed to the laminator and combined in the order of “aluminum sheet-core material-aluminum sheet“. Then, they are pressed in a continuous press for a certain time (30s-60s). This process allows the adhesive to fully cure, ensuring a tight bond between the three layers without air bubbles or gaps.
Cutting, Finishing, and Customization
Cutting: CNC machine tools cut the panels to standard sizes (1220×2440×3.0mm/4.0mm) or custom sizes.
Surface Treatment: A variety of surface treatments are available, including matte, high-gloss, wood grain, marble, brushed, mirror, or chameleon finishes, to meet diverse design requirements.
Edge Trimming and Sealing: Edges are trimmed using an edge trimming machine, and a protective film is applied to ensure the panels remain scratch-free and moisture-proof during transportation.
Quality Inspection: Strict Control of Every Detail
We have established a comprehensive quality inspection system, rigorously inspecting the aluminum composite panels at every stage of the production process to ensure that every product delivered to our customers is qualified.
Raw Material Inspection: Testing the thickness, tensile strength, and corrosion resistance of the aluminum coils; the density and fire resistance of the core material; and the bonding strength and weather resistance of the adhesive. Only qualified raw materials can be used in production.
In-process inspection: During production, inspectors randomly sample the surface quality (e.g., color uniformity, no scratches, no bubbles), thickness (total thickness error ≤ ±0.1mm), and bonding strength of the aluminum composite panels. Any non-conforming products are immediately removed from the production line for root cause analysis.
Final inspection: Random testing of fire resistance, weather resistance, and impact resistance; labeling and packaging of qualified aluminum composite panels.
Packaging and Transportation
Each aluminum composite panel is wrapped in PE film and secured with a wooden pallet to prevent surface scratches and displacement during transportation. Chengguang aluminum composite panels are exported globally, supporting projects in over 100 countries.
Conclusion:
The production process of aluminum composite panels integrates high-quality materials, advanced coating technology, precise lamination processes, and strict quality control. Every sheet from Xinguang is designed with durability, aesthetics, and project customization in mind.
Looking for high-quality wholesale aluminum composite panels? Contact SHINGKWANG today for samples, quotes, and customized aluminum composite panel solutions to meet your project needs.
