Mustered Yellow Pleated Satin Silk Fabric. Pleated Silk Fabric. ... These fabrics are very soft and smooth in texture and are widely demanded in the market. Colorfastness and smoothness are some of the main specifications of our products. A pleat (older plait) is a type of fold formed by doubling fabric back upon itself and securing it in place. It is commonly used in clothing and upholstery to gather a wide piece of fabric to a narrower circumference.