Acid inks are a type of ink formulated for printing on protein-based fibers, such as silk, wool, and polyamide. These inks are known for their versatility, high chlorine and salt water tolerance and ability to produce vibrant and colorfast prints on these fibers. SPGPrints' acid inks penetrate through the fabric, resulting in the printed image being fully visible on the reverse side of the material. The "acid" in the name refers to the fact that these inks require an acidic environment to set correctly on the fabric. This process is achieved through post-printing, which involves steaming the material to fix the colors.

Acid inks form ionic bonds with the fibers, creating a strong and durable connection. This results in excellent color retention, even after multiple washes. These inks are often used for applications requiring intricate detailing and a wide color gamut.

In short, the 3 most important benefits are:

• High color quality
• High wash fastness
• High chlorine and salt water tolerance