Offset Printing Ink

Core Types and Technical Features

UV and LED-UV Offset Inks
UV inks cure instantly under ultraviolet light and are suitable for high-precision applications such as labels and packaging, offering high gloss and rub resistance. LED-UV inks further reduce energy consumption by 75% and are ozone-free, meeting the needs of sustainable printing.
Eco-Friendly Inks
Soy-Based Inks: Made with soybean oil, they reduce VOC emissions and comply with EU REACH and Swiss SR817.023.21 standards. They are suitable for food packaging and children's books.
Low-Odor Inks: Eliminate irritants, meeting the needs of sensitive applications such as books and textbooks while maintaining high color saturation and adhesion.
Industrial Inks
Heatset and Coldset Inks: For newspaper and magazine printing, they dry quickly through heat or penetration, ensuring clear image and text on porous substrates.
Non-Absorbent Surface Inks: Designed for plastics (PVC, PET) and metal, UV variants offer scratch resistance.

Technical Advantages

Ink Balance: Ink adheres only to image and text areas, preventing smudging of blank areas and ensuring print clarity.
Quick Drying: Fast-drying inks (such as sheetfed inks) dry in minutes, improving efficiency in post-processing processes such as binding and laminating.
Color Consistency: ISO 2846-1 certified inks ensure accurate color reproduction, making them ideal for brand logos and brochure printing.
Multi-Industry Applications
Packaging: UV inks for beverage cans and food containers provide retort and scratch resistance.
Publishing: Low-odor soy inks comply with Nestlé's packaging ink guidelines and are suitable for children's picture books and educational materials.
Commercial Printing: High-gloss inks on coated paper create a beautiful texture, perfect for brochures and posters.
Industrial Applications: High-temperature-resistant inks for circuit boards and automotive components ensure durability in extreme environments.

Drying Methods: LED-UV drying is not only suitable for high-speed production lines (e.g., label rotary presses) but also protects heat-sensitive substrates (e.g., laminated paper) with its low-temperature curing feature. It emits no VOCs, meeting strict environmental standards for food packaging; oxidative drying inks, though slower (typically 2-4 hours), cost only 60%-70% of UV inks, making them ideal for small-batch projects like books or flyers with low time sensitivity. They are also compatible with most traditional offset presses, requiring no additional curing equipment.

Compared to traditional UV drying, which is better suited for printing heat-sensitive materials (such as thin coated paper)?

LED-UV drying is more suitable. Traditional UV curing systems release high levels of infrared heat (typically 60-80°C), which can cause heat-sensitive materials to shrink, deform, or even peel off the coating. LED-UV, on the other hand, uses low-temperature curing (below 40°C), which allows for rapid ink curing (0.1-0.3 seconds) while protecting the substrate from heat damage. Furthermore, it consumes only 30% of the energy of traditional UV, making it more energy-efficient.

Oxidative-drying inks dry slowly (2-4 hours). Why are they still used in short-run book and magazine printing?

Although it dries more slowly, its advantage lies in its high compatibility. It can be used directly on conventional offset presses, eliminating the need for an additional UV curing unit (saving tens of thousands of yuan in equipment costs). Furthermore, its price per kilogram is only 60% of that of UV ink, making it suitable for small batches of up to 500 books and periodicals. For such orders, which have less demanding delivery times, printers can accelerate oxidation drying by stacking the prints naturally, balancing cost and efficiency.

Hot Tags: offset printing ink, China offset printing ink manufacturers, suppliers, factory, Offset Ink, offset sublimation ink, dry offset printing inks, Offset UV Ink, web offset printing ink, Offset Printing Ink