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Coats Dual Duty
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COATS
DUAL DUTY is a state-of-the-art corespun thread
combining the strength and durability of a polyester
filament core with a natural cotton wrap for excellent
seam wash down and sewing performance.
COATS DUAL DUTY comes to you from the World of Coats
and is available in more than 60 countries. As the
world's largest thread supplier, Coats guarantees
global quality and performance.
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One colour. One specification. Worldwide.
Coats operates to a global specification for COATS
DUAL DUTY with quality audited by one centrally
located team.
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Ideal Applications
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Classic jeans and outdoor wear
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Fine cotton, denim shirts and suits
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Leather goods, towels and home furnishings
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Fine fabrics and premium lingerie
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Why choose COATS DUAL DUTY?
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"Faded" designer look on denim
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Cotton wrap protects poly core from needle heat
and high ironing temperatures
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Certified to OKO-tex standard 100, Class I, the
most stringent class covering baby wear
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Product Specifications
Global offer
Tex No |
Total Dtex |
Ply |
Elongation %
min - max |
Needle size*
Singer/Metric |
24
40
60
80
105
120
150
210 |
260
430
680
880
1,050
1200
1600
2200 |
2
2
3
2
2
3
4
2 |
19 - 21
20 - 22
19 - 21
20 - 22
17 - 18
20 - 22
23 - 24
23 - 24 |
11/75
14/90
16/100
18/110
19/120
21/130
22/140
23/160 |
("Needle size
recommendations are nominal and ultimately depend on
the sewing application; companion ready-wound bobbins
available.)
Technical Data
Global offer
Tex No |
Tkt |
Length (m) |
Strength (CN) |
TPM |
24
40
60
80
105
120
150
210 |
120
75
50
36
30
25
18
15 |
5000
5000
5000
4000
2000
2000
1500
500 |
1018
1825
2785
3650
3704
5282
5659
9687 |
1102
834
670
649
494
474
389
328 |
Chemical
Properties
Mineral acids:
Polyester resistant. Cotton disintegrates in hot
dilute and cold concentrated acids.
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Alkalis:
Polyester is essentially unaffected by weak alkalis,
but less resistant to stronger alkalis, especially at
higher temperatures. Cotton swells in caustics with no
appreciable strength loss.
Organic solvents:
Polyester is generally unaffected, but soluble in
solvents and some phenolic compounds. Cotton is
degraded by some solvents.
Bleaching:
Polyester is unaffected. Cotton is bleached by
hypochlorite and peroxides.
Insects/microorganisms
(mildew, rot): Polyester is unaffected.
Cotton degrades but can be treated with special
finishes.
Laundering/dry cleaning:
Unaffected
Moisture regain:
Polyester is 0.4%; Cotton is 8%
Fastness Properties
(All Grade 4)
Washfastness (ISO 105 CO3)
Waterfastness (ISO 105 E01)
Rub-fastness (ISO 105 X12)
Hypochlorite fastness (ISO 105 N01)
Dry cleaning fastness (ISO 105 D01)
Perspiration fastness (ISO 105 EO4)
Lightfastness (ISO 105 B02)
(These
fastness grades represent minimum performance levels.
In practice the majority of shades will exceed these
levels.)
Thermal Properties
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Polyester melts at 508 - 526 F (250 - 260 C),
softens at 454 - 490 F (220 - 240 C)
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Cotton discolours after prolonged exposure to
high temperatures
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Shrinkage less than 1% at 328 F (150 C)
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