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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
Standard for colour fastness of polyester thread for sewing machine
|International standard||Name||Degree of staining|
|ISO 105 C10||Wash Fastness||Grade 4|
|ISO 105 X12||Rub Fastness||Grade 4|
Colorfastness test of Doyte® polyester sewing thread
|International standard||Soap solution||Temperature||Time||Degree of staining|
|ISO 105 C10||5g/L||60℃+/-2℃||30Min||Grade 4|
Limitations of polyester thread for sewing machine
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.