UltraSoft® and UltraSoft AC® Data


Electric Arc Flash

Shock, electrocution, arc flash and arc blast are responsible for one worker death per day and 3,600 disabling injuries per year on average in the United States. One outstanding feature of UltraSoft® and UltraSoft AC® is their ability to provide unparalleled protection against the risks and hazards associated with electric arc flash. ASTM F1506 electric arc flash testing undertaken by Kinectrics Inc. of Toronto, the world’s leading authority on electric arc flash testing of fabrics and textile materials, concluded that UltraSoft® and UltraSoft AC® exceed the minimum requirements of NFPA 70E Hazard Risk Category 2 (8 cal/cm2).

Flash Fire

NFPA 2112, "Flame Resistant Garments for Protection of Industrial Personnel Against Flash Fire," provides a minimum performance criteria and sets out guidelines for testing on instrumented mannequins. NFPA 2112 requires flash fire testing to be conducted at three second intervals with a pass/fail rate of 50% total body burn under ASTM F1930.

Westex flash fire testing has been conducted at the University of Alberta's PCERF laboratories. PCERF is a protective clothing and equipment research facility and is one of the foremost flash fire laboratories in the world. The testing was performed under the protocols of ASTM F1930 and the guidelines of NFPA 2112. Overall testing found the following;

  • UltraSoft® 237gsm/7.0oz - average total body burn of 14% at 3 second exposure per NFPA 2112. 

  • UltraSoft® 305gsm/9.0oz - average total body burn of 9% at 3 second exposure per NFPA 2112.

  • UltraSoft AC® 237gsm/7.0oz - average total body burn of 20% at 3 second exposure per NFPA 2112.

  • UltraSoft AC® 305gsm/9.0oz  - average total body burn of 12% at 3 second exposure per NFPA 2112.

  • Total body burn - refers to total second and third-degree body burn.

Molten Ferrous Metal

UltraSoft® and UltraSoft AC® also have the unique ability to shed molten ferrous metals. While some charring may occur, the flame resistant properties of UltraSoft® and UltraSoft AC® will preclude ignition and continued combustion (ASTM F955). It should be noted that protection from second-degree burns in ferrous metal processing is highly dependent on the quantity of molten metal exposed to and the number of layers and weight of the fabric worn: thus, different weights should be evaluated. A minimum fabric weight of 305gsm/9oz is recommended for light welding/cutting operations while 407gsm/12oz or heavier weights are recommended for most other foundry and molten metal applications. In general, heavier weights will provide better insulation from heat transfer however the end user must determine the appropriate weight for their application.


ASTM tests for UltraSoft®, UltraSoft AC®, TrueComfort™ Knits and UltraSoft® Knits and Fleece as a single layer system, achieved the following ATPV ratings.

UltraSoft® - 88% Cotton 12% High Tenacity Nylon with an excellent reputation for providing an unparalleled balance of protection, comfort and value.

Style/Weave

 

Usage

Weight

gsm/oz

ATPV

Rating

Colour

 

301 Twill

Shirt, Light Weight Coverall

237/7.1

8.7

Medium Blue

301 Twill

Shirt, Light Weight Coverall

237/7.1

8.7

Visual Orange

451 Twill

Trouser, Coverall, Jacket

305/9.0

12.4

Navy

451 Twill

Trouser, Coverall, Jacket

305/9.0

12.4

Royal

351 Chambray

Shirting

237/7.1

8.5

Denim

341 Twill

Light Weight Shirting

186/5.5

6.1

Khaki

331 Chambray

Light Weight Shirting

186/5.5

6.0

Denim

961 Duck

Outerwear, Trouser, Jacket

372/11.0

12.7

Carmel

881 Basketweave

Trouser, Jacket, Coverall

271/8.0

9.8

Navy

801 Sateen

Trouser, Jacket

440/13.0

21.0

Medium Grey

391 Denim

Trouser, Jacket

440/13.0

19.5

Denim

 


UltraSoft AC® - 88% Pima+ Cotton 12% High Tenacity Nylon provides advanced comfort with long-staple Pima Cotton’s natural comfort, characteristics, added strength and approved appearance after laundering.

Style/Weave

 

Usage

Weight

gsm/oz

ATPV

Rating

Colour

 

901 Twill

Shirt, Light Weight Coverall

237/7.1

8.3

Medium Blue

951 Twill

Trouser, Coverall

305/9.0

11.7

Navy

 

+Pima cotton, also called extra-long staple (ELS), is a type of cotton grown primarily in Peru, the south-western United States and Australia. It is considered to be one of the superior blends of cotton and is extremely durable and absorbent. This type of cotton is named after the Pima, a group of American Indians who first cultivated the plant in the US, but the cotton's origins are its cultivation in Peru. Unlike the more common upland cotton, which is of the species Gossypium hirsutum, pima cotton is of the Gossypium barbadense species. This type of cotton bears some similarity to many forms of Egyptian cotton which is frequently used in towels and sheets. Egyptian cotton has a much more extensive weave than other types of cotton. Towels made from Egyptian cotton are particularly desirable because they are very soft and help absorb water quickly. Growers in the south-western US, where the climate is somewhat similar to that of Egypt, began growing a type of cotton that was a mix of Egyptian and other types of cotton. Pima cotton is a little shorter than Egyptian cotton but still yields a thread that can be woven multiple times into a piece of fabric to create a dense, soft fabric.


TrueComfort™ Knits and UltraSoft® Knits and Fleece

Style

 

Usage

Weight

gsm/oz

ATPV

Rating

Colour

 

128 TrueComfort™1

T-Shirts, Henley Shirts, Polo Shits (Interlock Knit) - UL Certified to NFPA 2112

186/5.5

8.9

Navy

129 TrueComfort™1

Cuffs, Collars, Balaclavas, Undergarments (Rib Knit)

186/5.5

10.0

Navy

130 Interlock Knit2

T-Shirts, Henley Shirts, Polo Shirts

203/6.0

10.9

Navy

131 Rib Knit3

Cuffs, Collars, Balaclavas, Undergarments

220/6.5

12.1

Navy

180 Fleece2

Sweatshirts, Hoodies

372/11.0

21.8 (Ebt)4

Orange

181 Rib Knit3

Cuffs, Collars, Balaclavas, Underwear

355/10.5

24.7

Navy

 

  • 1 Style 128 TrueComfort™ Interlock Knit 100% Cotton. Style 129 TrueComfort™ Rib Knit 98% Cotton, 2% Spandex.

  • 2 Style 130 UltraSoft® Interlock Knit and Style 180 UltraSoft® Fleece - 88% Cotton, 12% High Tenacity Nylon.

  • Style 131 and Style 181 UltraSoft® Rib Knit – 86% Cotton, 12% High Tenacity Nylon, 2% Spandex.

  • Ebt - is equivalent to the energy break-open threshold (Ebt) and represents the highest incident energy exposure value on a fabric where the garment does not exhibit break-open. 


NFPA 70E: Annex H, Two-Category, Flame Resistant (FR) Clothing System

Table H.1 Simplified, Two-Category, Flame Resistant Clothing System

Clothing

Applicable Tests

Everyday Work Clothing

FR Long-sleeve Shirt with FR Trousers (minimum arc rating of 8 cal/cm2) or FR Coveralls (minimum arc rating of 8 cal/cm2)

 

All Hazard/Risk category 1 and 2 tasks listed in Table 130.7(C)(9).

Arc Flash Suit

A total clothing system consisting of FR Long-sleeve Shirt and FR Trousers and/or FR Coveralls and/or Full Coverage Arc Flash Suit (minimum arc rating of 40 cal/cm2)

 

All Hazard/Risk category 3 and 4 tasks listed in Table 130.7(C )(9).