Filter Bag Sewing Threads including PTFE thread, PP polypropylene thread, PE polyester thread, PPS thread or fiberglass thread for different filter bags and industries.

Our different materials of threads are specially for filter bag sewing, different materials are with specific different features. Such as PTFE threads are with high temperature and high corrosion resistance, PP theads are good resistant to alkali and PE threads good resistant to acid.

Below are specifications of PTFE sewing threads. For other materials threads as our regular products can be supplied too.

 

Standard density Types of PTFE sewing thread(Can be customized)

1350±50 dtex (1200 den)	2600±100 dtex (2400 den)
1600±50 dtex (1500 den)	1350±50 dtex (1200 den)

 

Standard Types of PTFE thread(Can be customized)

solid thread	twin thread	coloured thread
mixed colour thread	pure thread	mixed thread

 

Standard Net weight/spool of PTFE thread(Can be customized)

500g	600g
800g	1000g

 

Notice:
1.We use “dtex” as the unit of linear density(a certain quality of unit length) according to the national standard and requirement. 1350 dtex means that the quality of 10000 meters sewing thread is 1350g. We also use another linear density unit “den”(Daniel) or “D”,which is the quality of the 9000m length, so 1 dan equal 0.9 dtex.
2.In order to avoid harmful gases, please do not burn the PTFE.
3.After sewing PPS filter bag,the resilience of pinhole may be bad and pinhole may be bigger. So we suggest using thinner needle or contact our engineer for better suggestion.
4.To guarantee the quality of the PTFE thread, all of the thread made from PTFE yarn and without knot.
5.Because PTFE products are slippery, you can add a little silicone oil if needle skip during operation.

PTFE is a fluorocarbon solid, as it is a high-molecular-weight compound consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine. PTFE has one of the lowest coefficients of friction of any solid. PTFE is used as a non-stick coating for pans and other cookware. It is very non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PTFE reduces friction, wear and energy consumption of machinery.

 

PTFE Sewing thread technical data

NO.	ITEM	Index	Testing environment	Remark
1	linear density	1200±50den	Normal Temperature
2	Tensile strength	≥33N	Normal Temperature（Winter≤16℃）
3	breaking strength	≥2.6cN/den	Normal Temperature
4	Elongation	4~6%	Normal Temperature
5	Thermal shrinkage	≤2.5%	260℃ 2h
6	Plied yarn	3
7	Continue Lenght	≥5500m		No joint
8	Roller net weight	≥0.65kg
9	Lenght/1000g	7000-7400m

 

 

Application of PTFE sewing thread

Name	Density types	Application
special thread for filter bag sewing	1350±50 dtex     (1200 den)	double needle thread for sewing filter
Special thread for the top or the bottom of filter bag	2600±100 dtex   (2400 den)	Singer needle thread for sewing the top or the bottom of filter bag
Special thread for PPS filter bag	1600±50 dtex     (1500 den)	for sewing PPS filter bag
Coloured sewing thread for filter bag sewing	1350±50 dtex     (1200 den)	special using thread for filter bag

 

Filter Bag PTFE sewing threads, dust bag PP threads, PE threads, PPS threads, Fiberglass threads for bag filter sewing applications.