WELCOME NOMEX Protective Apparel Solutions Seeheim, 6/7 th April 2003
Introduction DuPont Safety and Protection Trends in personal protection DuPont support to end-users
Who is DuPont? Founded in 1802 by a French chemist : Eleuthère Irénée dupont Sales: 24 Billion $ (6.3 in Europe) R&D Budget: 1.3 Billion $ Employees: 83 000 (16 000 in Europe)
DuPont Worldwide Company based on science and innovation «The miracles of science» 19 Business Units 177 Production sites 124 Laboratories and R&D centres + 1 700 products
DuPont Famous brands Tyvek flexible sheet products Tactel speciality polyamide fibre Cromalin colour proofing systems CoolMax performance fibre Centari automotive and refinish products Butacite safety glass interlayer Teflon non-stick coatings Mylar polyester film Dacron fibre Corian solid surfaces Kevlar brand fibre g Tynex filaments Sustiva TM efavirenz Hytrel thermoplastic polyester Delrin acetal resin Suva refrigerants Nomex brand fibre Sontara spunlaced fabric Lycra elastane fibre Ti-Pure titanium dioxide Antron carpet fibre Ally herbicide Surlyn resin Cordura nylon fabric
DuPont Safety & Protection SAFETY = the essence of DuPont Corporate commitment to safety 100 years of industrial safety management 0.3 injuries/1000 employees (vs. 50 avg in industry) Global network of expertise in Safety, Health & Environment 30 years of experience in protective apparel Close collaboration with norm committees (ISO, CEN, ASTM, IEC)
The road to safety 80 70 60 50 40 30 20 Off the Job 10 0 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010
DuPont Safety & Protection Integrating technology, know-how and market presence to protect people, property, operations, and the environment Kevlar brand fiber Nomex brand fiber Krytox lubricants Oxone monopersulfate Teflon soil, rain and stain protectors Sontara spunlaced products Tyvek protective materials SafeReturns TM safety consulting Corian solid surfaces
WHAT IS NOMEX? Personal Protective Garment Solutions against heat and flame hazards based on: Aramid (aromatic polyamid) fibres invented & marketed by DuPont in the 60 s: NOMEX : meta-aramid polymer excellent textile properties KEVLAR : para-aramid polymer very high strength
THE NOMEX TECHNOLOGY Inherent, durable heat and flame resistance Does not burn, melt or drip Does not break open Starts to carbonize at 380 o C No toxic/irritating fumes Abrasion, tear and wear resistant
Applications of NOMEX Industrial laundering Automobile Thermal and electrical insulation Honeycomb/composites Gas filter bags Protective clothing 11
Clean and Disinfect DuPont Safety & Protection DuPont Emergency Response Solutions - from the Leader in Safety Technology
Personal Protection Markets served Firefighters Civil Protection/emergency response Industrial workers Petrochemical /offshore Chemical Utilities (electrical, gas) Automotive Police and armed forces
Protective apparel.a few examples 14
Key Trends Tightening norm and regulatory environment awareness and compliance expanding into new markets/territories Risk analysis a must Safety and Environment as a Corporate Value Multifunctional products (eg. heat + chemical +. ) Highly specialized solutions and «new» risks
Key Trends -cont d Information overload Many alternatives Many sources of information Industry consolidation and globalization Focus on efficiency and cost Growing use of leasing/rental contracts, especially in industry
Why protect people against heat & flame? In the event of a flash fire, explosion or electric arc, protective clothing: Provides escape time Minimizes burn injury Increases the chance of survival
Evaluation of exposure hazards (from damaged garments) Exposure description Type of Nomex Garment Estimated total exposure, J/cm2 2 Estimated time, s Estimated heat flux, W/cm 2 Brush fire Shirt 50 8 6.3 Apartment building fire Turn-out Coat 80 12 6.7 Flash-over fire Turn-out Coat 63 8 7.9 Oil-well Flash fire Coverall 17 2 8.5 Car: petrol tank explosion Turn-out Coat 59 <5 >11.8 Solvent/vapour flashover (paint) Turn-out Coat 67 5 13.4
Protection Against Flash Fire and Electric Arc Thermal protective clothing MUST : Not melt, or ignite and continue to burn Insulate the wearer from heat Provide permanent flame resistance
Why not wear everyday clothing? Conventional fabrics may ignite and continue to burn on the skin, which increases the burn injury Examples of fabrics which IGNITE are: Cotton, viscose, wool Examples of fabrics which IGNITE and MELT are: Polyester, Nylon
Types of thermal protective clothing I Flame-Retardant Treated Clothing, (e.g.:frc) Treatment applied on the fabric Protection is not permanent When exposed to heat or flame, FR treatment begins to degrade and vaporise in a flash fire Resulting hot tar can deposit on exposed skin, adding to burn injury level Resulting after-flame adds to burn injury level
Types of thermal protective clothing II Inherently Flame Resistant Clothing Permanent Protection Garments made from inherently flame resistant fibres, such as Nomex Garments do NOT ignite, burn or melt
The NOMEX offering... to support the 3 decision making factors Products Technology Economics People Protection Comfort
NOMEX meets end-user needs Excellent protection against : flash fire, (gas) explosion electric arc most chemicals Permanent antistatic protection Comfortable to wear Attractive styling and colors Cost effective Quality
Excellent thermal protection 100 80 60 40 Untreated polyester/cotton FR treated cotton Nomex(R) Comfort % predicted body burns after 4.5s exposure
Excellent comfort: fabric weight 400 300 200 FRT Cotton > 320-380 g/m2 Untreated cotton 260-300 g/m2 Nomex III 265 g/m2 Nomex Comfort 190-220 g/m2 FR treated cotton Untreated cotton Nomex(R) III Nomex(R) Delta C typical garment weight, g/m2
Cost effectiveness Garments of NOMEX last 3-5 times longer than cotton garments, and are: extremely resistant to general wear and tear keep their excellent appearance over time suitable for industrial laundering or drycleaning (up to 95 C) Have good dimensional stability (laundry shrinkage <3%)
NOMEX - The Technology NOMEX manufacturing plant (Asturias, Spain)
The Ingredients (I) ARAMIDS (aromatic rings with amide links) by DuPont meta-aramid: excellent thermal properties excellent textile properties para-aramid: high tenacity
The Ingredients (II) P-140 (carbon fibre within polyamid ) P-140 fibre with high charge concentration: the surrounding air becomes ionised NOMEX fibre with diffuse electrostatic charges
NOMEX - The Technology European Technical Centre - Geneva
Overview of Thermal Tests Limited flame spread Convective heat Radiant heat Thermal protective performance (TPP) Mannequin testing - Thermo-Man Arc testing - Arc-Man Steam heat transfer test
EN-531: Protective clothing for workers exposed to heat and flame EN 532 Limited Flame Spread EN 367 Heat transfer, flame EN 366 Heat transfer, radiation EN 373 Resistance, molten metal splash EN 340 Sizing, dimensional change EN 340 Marking
EN 532: Limited flame spread Does fabric burn? (convective heat source) Afterflame <= 2 seconds Afterglow <= 2 seconds No flaming (outer surface) No hole formation No molten debris
Conditions for lab tests of thermal protective clothing Heat source (e.g. convective, radiant) Realistic test parameters sensors which absorb heat energy and register a rise in temperature this rise in temperature can be correlated, via earlier research work, to the tolerance of human skin: pain, second, third degree burns
Stoll Curve: Typical Sensor Temperature Rise vs Time
EN 367: Convective heat Calorimeter Sample 80 kw/m 2
EN 367: Convective heat (EN531 requirements) Heat source flux: 80 kw/m 2 (typical flash fire) Measure time for temperature to rise to level of 2nd degree burns (HTI) Time to second degree burns: B1: 3-6 sec - B4: 21-30 sec B2: 7-12 sec - B5: > 30 sec B3: 13-20 sec
EN 366: Radiant heat Sample 40 kw/ m 2 Calorimeter
EN 366: Radiant heat (EN531 requirements) Heat source flux: 20 kw/m 2 Measure time for temperature to rise to level of 2nd degree burns (t 2 ) Time to 2nd degree burns: C1: 8-30 sec C2: 31-90 sec C3: 91-150 sec C4: > 150 sec
ISO 15797 Textiles - Industrial washing and finishing procedures for testing of workwear ISO 15797 specifies test procedures and equipment which can be used in the evaluation of cotton, polyester/cotton and reverse blend workwear intended to be industrially laundered. They serve as a basis for testing relevant properties such as dimensional stability, colour fastness, creasing and seam puckering. This International Standard does not provide instructions and specifications for the procedures and equipment to be used by industrial launderers. Since it is not possible, in practice, to reproduce industrial laundry processes (washing and finishing) in a laboratory setting, ISO 15797 provides an approach using defined intermediate scale equipment and exacting test procedures which may be used for the evaluation of workwear intended to be laundered industrially. The methods described in this International Standard simulate the effect of industrial laundering on workwear. Provision is made for eight different washing procedures based on the use of a front- or side-loading horizontal rotating drum type washer/extractor. Each washing procedure is considered to represent a single industrial wash. ISO 15797 also specifies two drying/finishing test procedures, namely tumble drying and tunnel/cabinet finishing.
ThermoMan SAM & Hot Steam Anti-static ArcMan
The Value-Chain NOMEX fibremix from DuPont NOMEX yarn from a spinner Personal Protection Equipment with NOMEX NOMEX fabric from a weaver
Garment manufacturer to ensure CE and standards conformity Outershell Inner Liner Membrane Reflective tape Heat insulation Sewing thread EN 469 / EN531
NOMEX Quality Labels
I. NOMEX standard label Requirements: Company Information End-use segment EN (or comparable PPE norm) (certificate + technical report) NOMEX sewing thread Note: DuPont reserves the right to request a sample
II. NOMEX High Performance Label Requirements: Company Information End-use segment EN (or comparable norm) certificate + technical report (all components) Ret (ISO 11092) for multi-layer assembly ATP value for Electric Arc Protective system DuPont technical requirements (incl. THERMO-MAN )
High performance protection: pushing the limits?! Merci!