Tyvek is dyed by which method?

• A. Direct dyed
• B. Pigment dyed
• C. Reactive dyed
• D. Solution dyed

Answer: (D)

Tyvek is made from high-density polyethylene fibers, so the most durable and uniform way to color it is to introduce the pigment during the polymer’s formation. This is solution dyeing: pigment is mixed into the polymer melt before extrusion, so the color becomes part of the fiber itself. That gives lasting, even color that won't wash out or rub off and is well-suited to a material like Tyvek, which needs strong colorfastness and stability in outdoor or protective uses. Direct dyeing and reactive dyeing rely on chemical bonding to specific fiber types (like cellulose) and aren’t practical for PE, and surface pigment dyeing can wear off or be uneven. So the coloring method that fits Tyvek best is solution dyeing.