creasing

In the context of the clothing and footwear industry, "creasing" refers to a molding process that involves folding the edges of garment sections and setting the fold. This is done to aid in operations like sewing collars, cuffs, and pockets, ultimately reducing the time needed for positioning these sections during sewing.1

Creasing machines differ from pleating machines in their specific function. While both are part of the broader category of molding processes that alter a garment's surface characteristics using heat, moisture, or pressure, creasing machines are designed to create a set fold on edges.1

The term "creasing" can also be used more generally to describe the development of folds or wrinkles, such as when a face creases with worry. In textile finishing, "creping" is a process that creates a waved or puckered effect on fabric, which can be achieved through methods involving steam and hot rollers or a caustic soda treatment.23