Weaving makes fabric by interlacing yarns. In conventional woven cloth, one yarn system runs along the fabric length and another crosses its width. Their recurring over-and-under arrangement is the weave structure.1
How weaving differs from other fabric formation
The basic distinction is how the material is connected:
| Formation route | Basic mechanism |
|---|---|
| Weaving | Interlacing lengthwise and crosswise yarns.1 |
| Knitting | Forming yarn into intermeshed loops.1 |
| Nonwoven formation | Forming a fiber or filament web and consolidating it, for example through thermal, mechanical, or chemical bonding.2 |
These are introductory descriptions. For the neighboring loop-based process, see Knitting Fundamentals.
Reading warp, weft, and the fabric edges
The yarn directions have distinct names:3
| Term | Meaning in conventional woven cloth |
|---|---|
| Warp | The lengthwise yarn system. |
| End | One warp yarn. |
| Weft, also called filling | The yarn system running across the width. |
| Pick | One weft yarn laid across the warp in a single insertion. |
A selvedge, also spelled selvage, is a lengthwise side edge of the woven cloth. Its construction can differ from the fabric body.4
In a simple diagram with fabric length drawn vertically, the warp ends run up and down, parallel to the selvedges. The weft picks run across between the side edges. Use the labeled fabric directions to orient the drawing; vertical and horizontal on the page are drawing choices.34
How a loom forms fabric
A loom organizes the yarns and their interlacing. Follow the formation of a pick through three functions:5
- Shedding: Separate the warp into upper and lower groups, creating an opening called the shed.
- Weft insertion: Carry the weft through that opening, across the warp.
- Beat-up: Push the newly inserted weft into the forming cloth. The reed, a comb-like loom component, performs this action.
Two further functions support continued production. Let-off releases warp yarn from the loom beam as it is needed. Take-up draws the formed fabric away and winds it onto the fabric beam. These functions manage the incoming yarn and outgoing cloth while the interlacing cycle continues.5
The weave pattern determines which warp yarns are above or below an inserted pick. Changing that arrangement across successive picks builds the pattern through the fabric.5
Plain, twill, and satin
A weave repeat is a recurring unit of the interlacing pattern. A float is a length of yarn that passes over or under several successive yarns of the other system without changing sides at every crossing.6
| Basic weave | Interlacing pattern |
|---|---|
| Plain | Each warp yarn alternates over one weft yarn and under the next. The neighboring warp yarn follows the opposite sequence. The repeat contains two ends and two picks. |
| Twill | The interlacing progresses diagonally through the repeat, producing the characteristic twill line. Floats bridge successive yarns between changes of side. |
| Satin | Long floats are interrupted by separated binding points, arranged so they do not produce a continuous twill line. |
These descriptions concern the yarn arrangement.6 To read a repeat, follow one end through successive picks, then compare its path with the neighboring end. Look for alternating crossings, a diagonal progression, or separated binding points among longer floats.
What weave alone can tell you
A weave name describes interlacing, while fiber composition identifies the material used in the yarns. Yarn characteristics, including fineness and packing, are further variables. Even fabric weight depends on construction details beyond the weave name.7
Finishing adds another influence. Mechanical finishing can change dimensions, smoothness, luster, and feel after fabric formation.8
Taken together, these distinctions mean that a weave name alone cannot establish a fabric’s composition, finished weight, feel, or suitability for a particular use. Treat it as one part of the description, alongside the material, yarn, construction, and finish.78
For those surrounding concepts, continue with Yarn Fundamentals and Fabric Fundamentals.
Citations
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- Fabric Manufacture I — 1. Introduction to Fabric Manufacturing; 1.1 Introduction — NPTEL / Indian Institute of Technology Delhi. Evidence locator: Fabric Manufacturing Technologies, opening and Figure 1.1; Weaving Technology, opening.
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- How are nonwovens made? — EDANA. Evidence locator: Web formation, first paragraph; Web bonding, first paragraph and bonding headings.
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- Fabric Manufacture I — 1. Introduction to Fabric Manufacturing; 1.1 Introduction — NPTEL / Indian Institute of Technology Delhi. Evidence locator: Some Basic Definitions Related to Woven Fabrics, Warp and Weft entries.
- Weaving Basics — Cotton Incorporated / CottonWorks. Evidence locator: What is Weaving? and Components of a Woven Fabric Structure.
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- Textile Encyclopedia — Selvage — Cotton Incorporated / CottonWorks. Evidence locator: Selvage entry.
- Weaving Basics — Cotton Incorporated / CottonWorks. Evidence locator: Components of a Woven Fabric Structure, illustration.
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- Weaving Basics — Cotton Incorporated / CottonWorks. Evidence locator: Components of a Woven Fabric Structure; Five Basic Motions of the Weaving Loom, Shedding, Filling Insertion, Beat-Up, and Let-Off & Take-Up.
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- Basic Woven Fabric Designs — Cotton Incorporated / CottonWorks. Evidence locator: Plain Weaves, first two paragraphs; Appearance of Twill Weaves; 2 x 1 Twill Weave, illustration caption; Appearance of Satin Weaves, structural description; 5-Harness Satin, binder-position explanation.
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- Fabric Manufacture I — 1. Introduction to Fabric Manufacturing; 1.1 Introduction — NPTEL / Indian Institute of Technology Delhi. Evidence locator: Fabric Manufacturing Technologies; Some Basic Definitions Related to Woven Fabrics, Yarn count, Packing factor, Cover factor and Areal density entries.
- Basic Woven Fabric Designs — Cotton Incorporated / CottonWorks. Evidence locator: Plain Weaves and Appearance of Satin Weaves, structural descriptions.
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- Mechanical Finishing — Cotton Incorporated / CottonWorks. Evidence locator: Compaction, opening; Calendering, first two paragraphs; Sanding, Napping, Shearing, and Brushing, opening.