By Eman Abdallah Kamel
Eman is a writer and engineer. She received her bachelor’s degree in textile science from the Faculty of Applied Arts.
Jeans
In modern fashion, jeans or denim fabric have become a mainstay, especially in the clothing sector. The fabric has evolved from 19th-century workwear to a symbol of mainstream style, and the United States is widely regarded as the birthplace and global center of modern denim culture. The evolution of denim in the textile and apparel sector reflects broader changes in manufacturing, sustainability regulations, and consumer behavior.
Denim stands out for its remarkable drape, durability, and resistance to abrasion. These attributes are valued in fashion design, industrial textile engineering, and product innovation. The Textile Institute, Fashion for Good, and the American Apparel & Footwear Association are examples of organizations that provide educational insights regarding spinning technology, fiber science, and the incorporation of sustainability principles into denim production.
Environmental concerns have prompted brands to reduce water consumption, adopt non-toxic dyes, and adopt circular economy models. Certification systems—such as the Global Organic Textile Standard (GOTS), the Sustainable Apparel Coalition, and initiatives from the Ellen MacArthur Foundation—Circular Economy—have become essential reference points for American manufacturers and retailers. Additionally, regulatory entities emphasize responsible sourcing and traceability through legislation such as the Uyghur Forced Labor Prevention Act and sustainable supply chain guidance from the U.S. Environmental Protection Agency.
The denim market reflects multiple layers of consumer culture. Luxury brands, premium denim labels, fast-fashion retailers, and sustainable startups coexist in a competitive ecosystem. Market research platforms, such as McKinsey & Company’s Fashion Insights and Business of Fashion, highlight the growth of the denim retail sector and the shift toward more ethical and environmentally responsible purchasing patterns. Meanwhile, organizations, including Fashion Revolution, are documenting consumer awareness campaigns.
Denim is more than just a fabric; it represents a cultural legacy, a driving force in the economy, and a field of design and textile science that is always changing. It aligns with national priorities related to sustainability, technological innovation, and manufacturing leadership. Whether featured in luxury fashion houses, streetwear collections, established brands, or general retailers, denim remains a signature fabric of the American apparel industry and a major contributor to the broader global textile economy.
Let’s find out more about this fascinating fabric.
Production Stages
Jeans production includes 5 main stages:
- Carding
- Spinning
- Dyeing
- Weaving
- Cutting and Sewing
- Finishing
- Carding: Cotton is carded by passing it through devices that have teeth made of bent wire. Cotton fibers are cleaned, detangled, straightened, and held together by this process. The fiber that results is known as a sliver.
Did You Know?
Before the late 1970s, all denim yarns were ring-spun. Today, denim fabrics are made with various combinations of ring and open-end yarns. When you hear terms like “ring/ring,” “open end/open end (OE/OE),” and “loop/OE,” they refer to which yarns are in the warp and which are in the weft, respectively.
- Spinning: The warp yarn count used in lightweight denim typically ranges from Ne 4.0 to Ne 12.5. Finer yarns are used for lighter chambray fabrics, such as jeans, jackets, dresses, and skirts. These yarn counts can range from 12.5 to 30.0. Other machines then join the sliver threads together to pull and twist them, strengthening the yarn. These threads are then placed on spinning machines that wind and stretch the fibers to form the yarn.
Remember
Core-spun yarns are traditionally produced on ring-spun machines by inserting spandex yarn into the back of the machine’s front draw drum. The spun cotton fibers then wrap around the spandex core to produce a flexible, ring-spun yarn. Open-end and air-jet spinning machines adapted for core-spun yarn production are also available. In these machines, the core yarn (usually spandex) is inserted through the rotor shaft on an OE frame or air-jet frame spindle, and the cotton fibers wrap around the spandex yarn during the spinning process. The resulting yarn is somewhat similar to ring-spun yarns in terms of both yarn and fabric characteristics. Open-end and air-jet core-spun yarns have fewer knots and joins compared to ring-spun yarns.
- Dyeing: Before being woven, denim is dyed. Only the warp threads are dyed, while the weft threads are left in their natural white color. Denim is available in a wide range of colors, not just blue. Among the many dyes used to color denim are vat dyes (indigo-sulfur), direct dyes, and reactive dyes (the Remazol group). Indigo dyeing produces blue and different shades of blue. Typically, synthetic indigo is used as the dye. To create multiple layers of dye, the denim is repeatedly submerged in the dye bath. Blue jeans tend to fade after washing because of this. A tiny bit of sulfur is added to fix the indigo dye. The threads are then treated with a mixture of starches to strengthen and stiffen them. Denim can be dyed in many colors using sulfur dyeing, including black, greenish-brown, yellow, purple, gray, pink, and orange.
Did You Know?
Indigo was a valuable plant in Egypt, Babylon, Greece, Rome, China, and India. Islamic Spain began cultivating indigo plants in the 11th century. In modern times, synthetically produced indigo dyes have replaced plant-based dyes.
- Weaving: To form a weave, two sets of threads are interlaced perpendicular to one another in denim fabrics. The threads running in the direction the machine is made are called warp threads, and they are interlaced with the weft threads. The sequence or order in which the two sets of threads are interlaced can be changed to produce many different weave designs. The quantity of warp and weft threads per square inch or centimeter determines the final fabric structure. For example, a typical construction for bottom-weight denim might be 62 x 38. This is interpreted as 62 warp threads per inch of width and 38 weft threads per inch of length, always in that order. Thread count, along with the number of threads used, will affect the fabric’s properties, such as weight, drape, durability, tensile strength, tear strength, and other fabric characteristics.
- Cutting and Sewing: Denim fabrics are cut according to the design, then transferred to industrial sewing machines for sewing. In the sewing workshop, skilled workers sew according to predetermined seam allowances and spacing.
Did You Know?
Types of jeans based on cuts, including skinny jeans, boot-cut jeans, straight-leg jeans, wide-leg jeans, and bell-bottom jeans.
- Finishing: Denim undergoes many processes to achieve the desired final result for the fabric. To learn more about denim finishing, visit Denim Finishing.
©Eman Abdallah Kamel, 2025
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