Glossary: Wool Flannel and Fulled Wools

Wool flannel is a fabric made from wool, a natural fiber which comes from the fleece of sheep. For more information, see the entry Glossary: Wool Fiber. The term flannel refers to woven fabrics which have been fulled to make them denser and thus, warmer. Often, the fabrics are also brushed to raise a nap, on one or both sides, which gives the fabric a soft, fuzzy texture. Historically, wool broadcloth is a similar textile, undergoing a process of fulling and brushing. Modern cotton flannel, sometimes called flannelette, is very different; in historical references, “flannel” typically means wool flannel (see the entry on cotton flannel for more information). Fulled wool fabrics are usually made of woolen, rather than worsted, yarns. For more information on the distinction, see the entry on wool tabby.

Note that many fabrics of this type available today are made of synthetic fibers, or blended wool with synthetic fibers; blends, and especially fully synthetic fabrics, do not look, feel, or behave the same way as natural, 100% wool or animal hair (such as cashmere) fabrics. For more information on the differences between natural and synthetic fibers, see the entry on synthetic fiber.

Definitions of flannel and other fulled wool fabrics from a variety of print resources, each of which contains further information:

On page 12, on the subject of fibers, it is stated that “Wool or woolen is a staple fiber, meaning it is of relatively short length. Short staple wool is carded before spinning and creates fluffier yarn and fabric. Longer staple wool is called ‘worsted.’ Worsted fibers are combed to lay them parallel before spinning, creating a smoother yarn and thus a smoother fabric. Natural colors of wool range from creamy white to beige to brown to black. Wool dyes well because it is absorbent upon prolonged exposure to moisture. Overlapping scales that cover the fiber (seen under magnification) give wool its felting ability, because they interlock and entangle the fibers with the application of heat, moisture, and agitation. This is important in the fulling process, which shrinks and felts the wool to a desired degree. The scales also trap air, which makes wool warm to wear.”

There are no specific references to “flannel,” but on page 24, the fabric swatch for “baize” is something that could be termed a heavy flannel. The text states that “This plain-weave woolen cloth was heavily fulled so that the fibers became felted. Both sides were brushed to raise a nap. The linings of many early nineteenth century cloaks appear to be home-woven baize (commonly green), and are of a lighter weight than the same shown here, which represents a factory-woven baize.”

  • Butterick Publishing Company, The. Vogue Sewing. Revised edition. New York: The Butterick Publishing Company, 2000.

Under the heading of “Texture Finishes” on page 46, it is stated that “Napping is a common finish by which short fiber ends of spun yarn are raised to the surface of a fabric by a series of revolving wire brushes to create flannel or fleece.” On the same page, it is also stated that “Fulling takes advantage of the natural shrinkage capacity of wool. Subjecting the cloth to moisture, heat, and pressure compacts the yarns, strengthens the weave, and imparts warmth, body, and stability. It is similar to the felting of non-woven fibers.”

While discussing wool textiles for mid-19th century reproduction clothing on page 61, it is stated that:
“When you come across references to ‘flannel’ in mid-century sources, this is most often a wool flannel, not cotton. Wool flannel can be made in a plain weave, or in a twill weave; it may be fuzzed on one or both sides. Woolen flannel generally has a loose weave, and is resistant to creasing; the woolen fibers give it an almost springy feel. Worsted flannels are firm, with a very slightly fuzzed surface, and tak[e] well to tailoring and creasing. Worsted flannel also tends to be less itchy, due to the longer fibers.
“Similarly, when you find references to ‘broadcloth’ in mod-century sources, it is most often a wool broadcloth, not cotton.”

On page 175, “broadcloth” is defined as “fine, stout, smooth-faced wool cloth, felted or given a nap finish to avoid raveling, much used for men’s clothes.” On page 176, “Georgian cloth” is defined as “light-weight broadcloth, first popular in 1806.” Also on page 176, “ladies’ cloth” is defined as “a light-weight broadcloth used for dresses.”

On page 180, “wool” is defined as “fabric made from the fleece of sheep, woven in many different styles, has warmth and elasticity.” On page 181, “worsted” is defined as “wool fabric made of well-twisted yarn of long-staple wool, combed to lay the fibers parallel.”

On page 375, “woolen” is defined as “Cloth made of carded short-staple fibers. After weaving, the cloth was fulled for shrunk to make it denser and heavier. Broadcloth was England’s traditional fine woolen manufacture. The soft fluffy fibers of carded wool were also suitable for knitting.” On page 177, “broadcloth” is described as being “Made of carded wool in plain weave and fulled after weaving.”

On page 152, “baize” is defined as “A heavy woolen cloth, well felted and usually raised, or napped, on both sides. Dyed brown or green it is used for covering tables, especially billiard tables.”

Online Resources:

For more information about an individual fiber, fabric, or other material, select it on the right side menu for “Fibers, Fabrics, and Materials.” This will bring up all entries which have that tag, including (in most cases) a Glossary post like this one, which will offer a definition of that fiber, fabric, or material, and sometimes also offer useful links to outside sources on working with it. For more general information, visit the core entry for the Glossary: Fibers, Fabrics, and Materials. For a directory of all textile glossary posts, go to the Glossary Table of Contents.

Updated January 10, 2012

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