China Manufacturer of Silk Screen Ink

Glass ink for Screen Printing

Screen Printing Glass ink is a functional coating designed for printing and firmly adhering to glass surfaces. It primarily bonds to the glass substrate through high-temperature sintering or low-temperature curing. Based on the processing temperature, it is categorized into high-temperature (720-850°C), tempered (680-720°C), and low-temperature (100-150°C) types. High-temperature and tempered inks are widely used in architectural curtain walls, automotive glass, and other applications due to their excellent weather resistance. Low-temperature inks are known for their rapid curing and solvent resistance. Ink-mixing solvents are divided into two categories: oil-based and water-based. Water-based glass inks are gradually replacing traditional oil-based products due to their odorlessness and compliance with EU environmental standards.

This ink features strong adhesion, acid and alkali resistance, excellent weather resistance, and high color stability. Suitable for screen printing, it undergoes a series of steps, including substrate preparation, ink blending, screen printing, and sintering. With increasing environmental protection requirements, lead-free inks are being developed to reduce environmental risks by reducing the lead content in toners. Some products have achieved acid resistance of up to 72 hours (ASTM standard). In the automotive industry, glass inks offer both masking properties for conductive silver paste and UV protection, and are used in the printing of components such as windshields and sunroofs.

Based on processing temperature, inks can be categorized into the following categories:

High-temperature glass inks

Also known as high-temperature tempered glass inks

Sintering temperatures range from 720-850°C. After high-temperature tempering, the ink firmly fuses to the glass. Widely used in architectural curtain walls, automotive glass, and home appliance glass.

Tempered glass inks

Tempered glass inks are tempered by a process of instant baking at 680-720°C and then cooling to fuse the glass pigment to the glass, achieving excellent color adhesion and durability. The resulting color and tempering result in rich hues, a strong, durable glass structure, and good resistance to atmospheric corrosion, providing excellent corrosion resistance and covering power.

Glass decal inks

Sintering temperatures range from 500°C to 700°C. Widely used in industries such as glass, ceramics, and sports equipment.

Low-temperature glass inks

Embossed and colored inks are baked at 100-150°C for 15 minutes to achieve excellent adhesion and solvent resistance. Ordinary glass ink

Dries naturally, with a surface drying time of approximately 30 minutes and an actual drying time of approximately 18 hours. Suitable for printing on all types of glass and polyester self-adhesive paper.

Based on environmental standards, it can be categorized as follows:

Lead-containing glass ink

Ink toners contain metals such as chromium, nickel, and lead, and these inks often pose a certain pollution risk.

Lead-free environmentally friendly glass ink

Because the use of ink toners with minimal lead content significantly reduces the risk of pollution, these inks are often referred to as environmentally friendly glass inks.