CTCP Printing Plate Raw Materials

With the continuous advancement of printing technology, CTCP (Computer To Conventional Plate) printing plates have gradually become the mainstream choice in the printing industry due to their efficiency, environmental friendliness, and cost-effectiveness. As the core of CTCP plates, the quality of raw materials directly impacts imaging performance, durability, and printing stability. In recent years, significant improvements in aluminum base processing, photosensitive coating, and environmental performance have provided printing companies with more efficient and eco-friendly plate-making solutions.

The offset aluminum CTCP plate mainly uses aluminum plate as raw material, and its core composition includes the following key parts:

1. Aluminum Base Material

CTCP plates use high-purity aluminum alloys (1050, 1060, 1070 series) as the base material, processed with high-precision rolling to ensure excellent corrosion resistance, flatness, and strength. The aluminum base undergoes electrolytic graining treatment, enhancing hydrophilicity and oxidation resistance, improving ink absorption, and ultimately enhancing printing quality and durability.

2. Photosensitive Coating

The core technology of CTCP plates lies in their UV photosensitive coating, which utilizes high-sensitivity ultraviolet-sensitive resin that responds optimally to 365-405nm UV light sources, ensuring high-precision exposure imaging. With technological advancements, the latest generation of CTCP photosensitive coatings offers fast developing speed, high resolution, and sharp dot reproduction, meeting the demands of high-quality printing.

3. Hydrophilic Layer

The hydrophilic layer prevents photosensitive coating residues from remaining in the micro-pores of the anodized layer, enhancing the plate’s hydrophilic performance and preventing contamination during printing.

4. Anodized Layer

After anodizing, the surface of the aluminum plate gains enhanced hardness, increased chemical stability, and improved wear resistance, ensuring longer-lasting performance.

5. Grained Structure

Using electrolytic graining technology, a fine-grained texture is formed on the aluminum base surface, providing ideal dot reproduction and excellent hydrophilicity, ensuring stable printing performance.

Hongchang Aluminum – Leading Supplier of CTCP Aluminum Plate Base

As a professional aluminum plate manufacturer, Hongchang Aluminum specializes in producing aluminum plate bases for CTP plates, PS plates, and CTCP plates, including 1050, 1060, 1070, and 1100 aluminum plates. Our products feature clean and smooth surfaces, free from cracks and corrosion pits, with neatly trimmed edges and no burrs, ensuring superior quality and performance.

Advantages of 1-Series Aluminum Alloy for CTCP Plates

1.High-Purity Aluminum Material: CTCP plates use 1050, 1060, and 1070 series aluminum alloys with an aluminum content of over 99.5%, offering high stability and excellent oxidation resistance, extending the plate’s lifespan.

2.Precision Processing: The aluminum plate undergoes high-precision rolling for uniform thickness and minimal deviation. Electrolytic graining treatment enhances hydrophilicity and ink absorption, improving print quality.

3.Corrosion Resistance: Anodizing forms a dense oxide layer, significantly improving chemical corrosion resistance, allowing the plate to withstand developer, dampening solution, and ink erosion, reducing material loss.

4.Accurate Imaging: High-quality aluminum plates ensure excellent adhesion for UV photosensitive coatings, resulting in uniform coating distribution. This guarantees precise exposure, reduces dot gain, and enhances sharpness in printed dots.

5.Eco-Friendly & Energy-Efficient: CTCP aluminum plates focus on environmental sustainability, reducing the use of developing chemicals and minimizing material waste due to their high durability, aligning with sustainable development goals.

6.Strong Compatibility: These plates are widely used in commercial, book, and packaging printing and are compatible with various CTCP plate-making machines, making them suitable for high-speed printing and large-scale production.