以被褥为例，被褥一般由胎料和外表的纺织物两部分组成，胎料又有絮胎和散纤之分。散纤状的被褥胎芯结构和形状不固定，易流动缩团，厚度不均匀。为了使被褥外层纺织物与内芯之间贴紧固定，使被褥厚薄均匀，将外层纺织物与内芯以并排直线或装饰图案式地缝合（包括缝编）起来，这种增加美感与实用性的工序，称为绗缝。
Taking bedding as an example, bedding is generally composed of two parts: tire material and textile fabrics, which are divided into flocculent tires and loose fibers. The structure and shape of loose-fibre quilt core are not fixed, easy to flow and shrink, and the thickness is not uniform. In order to make the outer fabric and the inner core of the quilt tightly fixed, so that the thickness of the quilt is uniform, the outer fabric and the inner core are stitched (including sewing) side by side in a straight line or decorative pattern. This process of increasing aesthetic feeling and practicability is called quilting.