Wrinkle-resistant fiber is a type of synthetic fabric that is designed to resist wrinkling and maintain its shape. Two common examples of this type of fabric are Orlon (5 letters) and Dacron (6 letters). Orlon is a trademarked acrylic fiber developed by DuPont in 1941, while Dacron is a polyester fiber developed by DuPont in 1953. Both fabrics are lightweight, strong, and resistant to shrinking, stretching, and fading.