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Discover How Thread Is Made

From bale to spool, get a behind-the-scenes look at how thread becomes needle-ready.

Other Thread Applications


Coats & Clark produces enough consumer thread to circle the world about 6.8 times.

Besides the consumer thread we use for our sewing projects, Coats & Clark also makes thread for the following applications:

  • Medical sutures
  • Manufactured apparel, uniforms, and shoes
  • Airbags, seatbelts, steering wheels, and tires
  • Feminine hygiene products
  • Mattresses and furniture
  • Fiberoptics
  • Major League baseballs
  • Tents and outdoor awnings
Many home sewing thread types were developed from technology used for these commercial applications.
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Bales Arrive


The process begins with giant bales of cotton or polyester. Each of these bales weighs 613 pounds and will produce about 25,000 spools of thread.

Opening


The cotton or polyester bales are opened into tufts, blended with like fibers in a garden-shed-size machine, and rolled into sheets called laps. Because cotton is a natural fiber, it also goes through a cleaning process to remove dirt, seeds, and other impurities.

Carding


Individual fibers are separated, straightened, cleaned, and brought together into fluffy ropes called slivers.

Carding, Continued


The slivers are coiled in giant bins. They are still 200 to 600 times thicker than finished thread.

Drawing and Roving


Six to eight slivers travel overhead and are then blended into one thick sliver. Cotton slivers must go through additional blending and combing processes. Finally, both cotton and polyester slivers undergo a drawing process to ensure fibers are uniform and parallel to each other. At this point slivers are reduced in thickness and given a slight twist in order to hold the weakened fibers together for spinning. These finer slivers are called rovings.

Ring Spinning


Next a series of rollers spins the rovings into yarns that are the necessary weight and thickness for the type of thread being produced. After the yarn is twisted, it is wound onto a ring tube.

Core Spinning


Some thread types must go through an additional core-spinning process, in which the cotton or polyester yarns are wrapped around another material, such as continuous polyester filament.

Get a closer look at continuous polyester filament.

Clearing, Splicing, and Winding


From ring tubes (pictured), the yarn then passes through detectors to find faults that may affect the thread’s future sewing performance. If a fault is removed or short yarns need to be lengthened, ends are spliced together. The number of yarns necessary for the final thread are laid side by side. (For example, Dual Duty XP, a two-ply thread, requires two polyester core-spun yarns.)

Twisting


A twist applied in a left direction gives the fibers strength and flexibility. The twisted fibers, called greige thread, are wound onto a notched dye center tube, which is similar to a hair curler, to create a dye package.

Dye Mixing


In the color kitchen a fully automated computer system weighs and mixes dyes and chemicals according to the necessary color recipe. The mixture moves through a series of pipes to the dye room.

Get a closer look at the mixed dye.

Color Development


New colors for Coats & Clark’s consumer thread lines and for manufacturing clients are also developed in the color kitchen. These samples were developed for spring 2011 fashion lines. Demand for colors is largely dependent on the season and trends.

Dyeing


In the dye room the dye packages are loaded onto a carrier and submerged in a dye vat, which works like a pressure cooker.

Dyed Thread


Holes in the dye centers allow the mixed dye to permeate the thread completely. Each one of these dye packages contains about 38,000 yards of thread.

Drying


Pulleys transfer carriers of dyed thread to huge dryers that steam the thread dry.

Singeing


After the thread is dyed, it is transported to the finishing plant. It arrives from the dye house on a dye package. Some thread is heated to remove stray hairs that could cause lint to build up when the thread is used.

Lubing and Drying


A lubricant formulated specifically for the thread’s final purpose is applied next. It gives the thread a finish that allows it to slide easily through a machine or a needle’s head. The lubricant takes eight hours to dry.

Hand Quilting Thread


Hand quilting thread is not singed or lubricated. Instead, a machine applies a glacé finish to the thread so it won’t tangle, knot, or twist while hand sewing. The glacé finish also reduces abrasion that may cause fraying. After the glacé finish dries, the thread is then transferred directly to spools.

Spooling


Thread is transferred to retail-size spools by spooling machines. The empty spools are dispensed from a clear bin that resembles a gum ball machine.

Spooling, Continued


After snap spools are loaded, they drop down and the machine closes them.

Loading Thread on Tubes


A different machine transfers thread onto the large tubes used for brands such as Star quilting thread.

Get a closer look at the process.

Specialty Thread


Some thread, such as monofilament thread must be handled with care throughout the process, especially after it is transferred to spools.

Ticketing


After the spools are filled, an operator inspects them as an automated system turns them upright, preparing them for the next step.

Ticketing, Continued


The ticketing machine also prints stickers and adheres them to the tops and bottoms of the spools.

Boxing


After the spools have stickers, they make their way on a conveyer belt through the machine to be packaged in boxes.

Boxing, Continued


The same ticketing machine also assembles the boxes. After the spools drop into a box, a lever pushes down on them to ensure they fit snugly. The machine then closes and adds labels to the boxes.

Packaging Tubes of Thread


Tubes of thread are shrink-wrapped by a different machine and labeled and boxed by hand.

Quality Control


Samples from every lot go through many rounds of vigorous tests to ensure the thread meets the company’s standards for quality. The thread color is also checked at several steps in the process.

Many Types of Thread


The boxes are shipped to a distribution center that later sends the thread to stores.

Other Thread Applications


Coats & Clark produces enough consumer thread to circle the world about 6.8 times.

Besides the consumer thread we use for our sewing projects, Coats & Clark also makes thread for the following applications:

  • Medical sutures
  • Manufactured apparel, uniforms, and shoes
  • Airbags, seatbelts, steering wheels, and tires
  • Feminine hygiene products
  • Mattresses and furniture
  • Fiberoptics
  • Major League baseballs
  • Tents and outdoor awnings
Many home sewing thread types were developed from technology used for these commercial applications.

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