weavinginterlacing

Interlacing in weaving is the crossing arrangement of warp (lengthwise) and weft (crosswise) yarns that binds threads into fabric. The sequence of over-under crossings, known as the weave, determines the fabric’s stability, texture, and drape. The simplest form is plain weave, where each weft thread alternates over and under every warp thread.

Other interlacing sequences produce fabrics such as twill, with a diagonal pattern, and satin, with long uninterrupted floats that give sheen. Warp-faced and weft-faced fabrics emphasize different sides of the weave depending on the density of interlacings. The choice of interlacing pattern governs properties such as strength, abrasion resistance, and hand feel.

In addition to structural interlacing, the term also refers to interlaced decorative motifs found in textiles and art. These patterns, often appearing as ribbons or cords that appear to weave over and under each other, are created by weaving, embroidery, or printing, and are prominent in Celtic knotwork, Islamic geometric design, and tapestry.

Materials range from natural fibers such as cotton, wool, and silk to synthetics. Loom technology—from simple hand looms to Jacquard and computer-controlled looms—expands the possible interlacing sequences. In modern textile engineering, computer-aided design and 3D weaving enable complex interlacing structures for technical fabrics, fashion, and interior textiles.