Cotton fabric is made up of two components: the fiber, and the cellulose.
Fiber is made of a single strand of DNA that stretches in a uniform way across a large amount of space, while cellulose is the structural component of the fiber.
Fiber and cellulose are both produced from plants, but the structure of the plant itself influences how the two components behave.
For example, the fiber used to make cotton is called keratin, which has a very long, narrow strand of repeating DNA that contains about 70 amino acids.
The keratin DNA is then folded into a short fiber that is a few strands wide.
When the fibers are folded, they are pulled apart into smaller pieces, which is the process that creates the crinkle pattern on cotton fabric.
When fibers are broken down into their constituent parts, they form a fabric.
However, a certain structure of a fiber is used to produce crinkle fabric, so crinkle is a generic term for the fabric that comes together at the seams and at the edge of the fabric.
A few examples of crinkle fabrics are: paper (made from the pulp of the leaves of a plant called napa cabbage)