Heavy duty polyester thread is made from non-stretchy but strong polyester continuous filament. Although it has no elasticity, it still accommodates a small amount of “give” with good recovery. It’s high strength and UV Resistance made it popular among professional outdoor products exposed to sunlight over long periods such as sports goods, automobiles, tarps, canvas, slings, awnings, tents, wire and cable applications, filtration, boat, marine fabric, outdoor furnishings and more. It also the ideal thread for general tough sewing like luggage and bag, furniture upholstery, footwear, curtains, kites etc. that see less sunlight.

Heavy Duty Polyester Sewing Thread Parameter

Denier/PLY Tex Ticket Recommended Needle Size

Singer Metric

100D/3 35 80 9-11 65-75

150D/2 35 80 9-11 65-75

150D/3 50 60 10-12 70-80

210D/2 50 60 10-12 70-80

210D/3 70 40 13-16 85-100

250D/3 80 30 16-19 100-120

420D/3 135 20 18-21 110-130

What Can Continuous Filament Polyester Thread Be Used For?

Garment construction: Continuous filament polyester thread is suitable for sewing seams, hems, and buttons on various types of garments. It provides strong and durable stitches that can withstand regular wear and washing.

Upholstery: This polyester filament sewing thread is excellent for sewing upholstery projects such as furniture, cushions, or pillows. Its strength and resilience make it ideal for handling the demands of upholstery fabrics.

Leatherwork: Continuous filament polyester thread is commonly used for sewing leather projects. Whether it's making leather bags, wallets, belts, or other accessories, this thread provides the strength needed to securely hold leather pieces together.

Quilting: This thick polyester thread is suitable for machine quilting and can handle multiple layers of fabric, batting, and backing. It helps create durable and long-lasting quilts with even stitches.

Machine embroidery: Continuous filament polyester thread is often used for machine embroidery. It allows for intricate designs and provides smooth and consistent stitching on various fabrics.

Decorative stitching: Whether it's decorative topstitching on garments or adding decorative accents to home decor items, continuous filament polyester thread can be used to create eye-catching and durable decorative stitches.

Outdoor gear: This heavy polyester thread is a popular choice for sewing outdoor gear such as backpacks, tents, or outdoor clothing. Its strength and resistance to environmental factors make it suitable for withstanding outdoor conditions.

Heavy-duty projects: When sewing heavy-duty fabrics like canvas, denim, or upholstery materials, continuous filament polyester thread provides the necessary strength and durability for secure seams.