Skip to content

filament thread

Expert in High Strength Sewing Thread. High-quality Filament Thread for Any Size Job or Budget.
Hot Sale CF Polyester Filament Sewing Threads online.

polyester thread
polyester thread
polyester sewing thread
polyester sewing thread
polyester sewing thread
polyester sewing thread
polyester thread for sewing machine
High strength sewing thread
polyester thread for sewing machine
polyester thread for sewing machine

Polyester Filament Thread

Hongfeng Doyte® polyester filament sewing thread can provide excellent seam strength and appearance and is widely used.

Doyte® Filament Polyester Sewing Thread Parameters

10Tkt 2505,000M13063020<2.5<1.0
12Tkt 2003,000M18392019<2.5<1.0
18Tkt 1805,000M18092021<2.5<1.0
24Tkt 1203,000M254142019<2.5<1.0
30Tkt 0802,000M373217018<2.5<1.0
50Tkt 0602,000M576262018<2.5<1.0
60Tkt 0403,000M783423017<2.5<1.0
90Tkt 0302,000M943520019<2.5<1.0
135Tkt 0201,500M1596836019<2.5<1.0
150Tkt 0181,500M1840903022<2.5<1.0
180Tkt 0151,000M22861140022<2.5<1.0
270Tkt 010900M34051663023<2.5<1.0
350Tkt 008700M38561948028<2.5<1.0
RA: Roughness Average. BSA: Breaking Strength Average. EBA: Elongation at Break Average. DHS: Dry Heat Shrinkage. BWS: Boiling Water Shrinkage

Standard for colour fastness of polyester thread for sewing machine

International standardNameDegree of staining
ISO 105 C10Wash  FastnessGrade 4
ISO 105  X12Rub FastnessGrade 4

Colorfastness test of Doyte® polyester sewing thread

International standard Soap solutionTemperatureTime Degree of staining
ISO 105 C105g/L60℃+/-2℃30MinGrade 4

Further reading

polyester thread for sewing machine
polyester thread for sewing machine

Filament Polyester Sewing Thread is made of slender polyester fibers twisted.

  • Advantages: Excellent elongation (fibers can be stretched and recovered), smooth and fuzz-free, can be made into thick or thin threads.
  • Disadvantages: Not as strong as core yarn (when comparing yarns of the same size), finer filament yarn may require tension adjustment.

Filament polyester sewing thread looks, feels, and sews similar to filament nylon sewing thread. Indistinguishable by appearance alone, technical specifications such as strength and stretch are very similar, meaning polyester works just as well as nylon in most applications.

The use of filament high-strength polyester sewing thread
Polyester outperforms nylon when sewing things that are exposed to sunlight (UV) and moisture for extended periods of time. This means that filament high-strength polyester sewing thread is a better choice for sewing anything that will be used outdoors most of the time.

Note: It is important to distinguish between long-term use and occasional use.
For example, tents used for annual camping trips can be sewn in nylon or polyester; tents used for fieldwork during a season should be sewn in polyester.

polyester sewing thread
polyester sewing thread
polyester thread
polyester sewing thread

Polyester threads have excellent UV resistance but do not provide ultimate UV resistance. Also, there are UV-treated reinforced polyester and nylon threads for better results.
None of this would matter if the material being sewn was not equally bleach and sun resistant. After all, the material makes up at least 90% of the content and cost of the item being sewn.

Polyester filament sewing thread is popular for its weather resistance, versatility, durability, and dimensional strength. In some applications, other types of sewing thread may be more suitable, depending on the conditions of end-use.

Below we list some specific cases for reference:

Flame Retardant Clothing and Gear – Polyester thread for sewing machine will stick at 440F and melt at 483F. This is too low for any application where threads and materials must withstand high temperatures. Aramid and PTFE fiberglass threads are used in these cases. Aramid sewing thread is heat resistant to at least 600F and does not melt; PTFE fiberglass protects to 1,000F.
Urgent Need for Strength – Polyester threads are strong enough for the various applications described so far. However, it is a poor choice for high-stress applications like conveyor belts, as it can stretch up to 26% before breaking. Compared to nylon or polyester, aramid is about twice as strong and much more expensive. For example, 92-gauge polyester has a tensile strength of 14.5 pounds; aramid in that size has a tensile strength of 30 pounds. Additionally, aramid only stretches 2% before breaking.

COTTON APPEARANCE – Polyester filament sewing thread has a smooth, shiny, lustrous finish that is not compatible with garments that require a soft, fuzzy, cotton look. In these cases, cotton, spun polyester, and wool are better and cheaper options.

Transparent or invisible suture Related category: Monofilament thread. The monofilament is made of nylon and its structure is similar to the fishing twin.

Chemical Resistance – Polyester (polyester) handles some chemicals well but not others.