Skip to content

What is the difference between bonded and non-bonded thread?

tex 45 bonded polyester thread

Bonded and non-bonded threads are two different types of sewing threads with different characteristics and uses.

Size 46 bonded polyester thread
Size 46 bonded polyester thread

Bonded Thread

Bonded filament sewing thread is coated with a special adhesive or resin that helps to prevent fraying and unraveling. The coating also helps to keep the thread from twisting and tangling, making it easier to work with. Bonded thread is often used in industrial sewing applications, such as leatherworking, upholstery, and automotive manufacturing, as well as for heavy-duty sewing tasks.

The process of bonding thread involves applying a coating to the thread and then heat-treating it to set the coating in place. This creates a strong, durable thread that is resistant to abrasion, UV light, and other types of wear and tear.

Two pros

  • One of the main benefits of using bonded thread is its strength and durability. Bonded thread is able to withstand a lot of stress and tension without breaking, making it ideal for sewing heavy-duty fabrics and materials. It is also resistant to fraying and unraveling, which makes it a good choice for outdoor applications where the thread may be exposed to moisture, dirt, and other harsh conditions.
  • Another benefit of bonded thread is its smoothness and consistency. The coating helps to keep the thread from twisting and tangling, which makes it easier to work with and produces more even, consistent stitches. Bonded thread is also less likely to create snarls or knots, which can save time and frustration during the sewing process.

Cons

However, there are some downsides to using bonded thread. Because of its coating, bonded thread can be more expensive than non-bonded thread. Additionally, the coating can sometimes make the thread stiffer and less flexible, which may not be ideal for all types of projects.

Non-bonded Thread

Non-bonded thread, also known as regular or untreated thread, does not have a coating or adhesive applied to it. Instead, it is made from a single strand of fiber, such as cotton, polyester, or nylon, that is twisted together to form a thread.

Non-bonded thread is often used for lighter weight fabrics and materials, such as cotton, linen, and rayon. It is also a popular choice for home sewing projects, such as clothing and accessories.

Pros and Cons

One of the main benefits of using non-bonded thread is its affordability. Because it does not have a coating or adhesive, non-bonded thread is generally less expensive than bonded thread. It is also more flexible and pliable, which makes it easier to work with and can produce a softer, more comfortable end product.

However, non-bonded thread is not as strong or durable as bonded thread. It may be more prone to fraying and unraveling, especially when exposed to moisture or other harsh conditions. It is also more likely to twist and tangle during the sewing process, which can create snarls and knots.

Choosing the Right Thread

When choosing between bonded and non-bonded thread, it’s important to consider the type of fabric and material you will be sewing, as well as the intended use of the finished product. Bonded thread is generally a better choice for heavy-duty sewing tasks, such as leatherworking, upholstery, and outdoor gear, while non-bonded thread is better suited for lighter weight fabrics and home sewing projects.

Additionally, consider the thickness and strength of the thread. Thicker threads are generally stronger and better suited for heavier fabrics, while thinner threads are better for lightweight fabrics. The strength of the thread is also important, especially if the finished product will be subjected to stress and tension.

Finally, consider the color and finish of the thread. Matching the thread color to the fabric color is important for producing a clean, polished look. Additionally, consider the finish of the thread, such as matte or shiny, to ensure that it complements the fabric and does not detract from the overall appearance of the finished product.

Summary

In conclusion, bonded and non-bonded nylon or polyester threads are two different types of sewing threads with different characteristics and uses. Bonded thread is coated with an adhesive or resin, making it strong, durable, and resistant to fraying and unraveling. Non-bonded thread is made from a single strand of fiber and is more affordable and pliable than bonded thread, but not as strong or durable.

When choosing between bonded and non-bonded thread, consider the type of fabric and material you will be sewing, as well as the intended use of the finished product. Match the thread color to the fabric color and consider the finish of the thread to ensure a polished look. By considering these factors, you can choose the right thread for your specific sewing project.