Tex 45 bonded nylon thread is a high-quality heavy-duty thread that is often used for heavy-duty applications. "Tex" refers to the weight of the thread, which is a measure of the thread's thickness. Tex 45 is a medium-weight thread that is ideal for sewing fabrics such as canvas, leather, and denim.

Bonded heavy nylon thread is made by combining multiple strands of nylon together and then coating them with a bonding agent. This creates a thread that is stronger, more durable, and less likely to break or fray than a regular sewing thread. Heavy-duty bonded nylon thread is also resistant to abrasion, chemicals, and UV radiation, which makes it ideal for use in outdoor applications.

Tex 45 polyester thread is often used in the manufacturing of products such as bags, luggage, outdoor gear, and upholstery. It can also be used for sewing heavy-duty clothing such as jeans and workwear. This type of thread is available in a range of colors and can be used with a variety of sewing machines, including industrial machines and home sewing machines.