Snij- en steekbestendige persoonlijke
beschermingsmiddelen
Maandag
17/11/2014
Kristof Daels
Sioen Armour Technology
Content
• Keuze beschermingskledij : steekbescherming /
snijbescherming
• Problematieken actuele producten
(benchmarking)
• Project plan : nieuwe ontwikkeling SIOEN
• Selectie van evaluatie-criteria & specificaties
• Conclusies SIOEN & nieuw product TORSKIN
• Praktische testing (simulatie realiteit) @ SAT
• Toepassingsgebieden
• Studies & didactisch materiaal ivm mesagressie
Keuze van beschermingsmiddel
(steekbescherming)
Gebaseerd op risico-beoordeling van de omgeving, keuze :
• Ofwel op basis van traditionele persoonlijke “ballistieke”
beschermingsproducten => vesten met 360° bescherming
van meest vitale organen (steekbescherming)
•
• Ofwel nieuwe aanpak : product met verhoging comfort &
ergonomische voordelen tov traditionele producten
Gekende problematieken
kledij met steekbescherming
• Comfort
– Gewicht
– Hitte-stress
– bewegingsvrijheid
• Prijs
• Discretie
– Vermijden van onnodige agressie
• Overengineering ?
– Beschermingsniveau in lijn met de realiteit ?
– Welke toepassing : ‘agressie’markt / ‘industrie’markt
– Traditionele kledij garandeert een volledige oppervlakte
Keuze van beschermingsmiddel
(snijbescherming)
• Onderzoek door Sioen van huidige producten op de
markt :
– Comfort :
• Irritatie (na diverse wasbeurten)
• Ademend karakter van het T-shirt
– Beschermingsniveau :
• Volgens welke norm getest ?
• Relatie : gewicht/m² v textiel in relatie met het
beschermingsniveau
Conclusie SIOEN : start nieuwe ontwikkeling
PROJECT
Combinatie van
snij- &
Steekwerendheid in
1 kledingstuk
Project plan
Anti-slash
& anti-stab
garment
NORMS /
Specifications
Anti-slash
Medical approach
Comfort
Anti-stab
weight
breathability
Other parameters :
discreteness +
FLEXIBLE
Skin-irritation
No immediate death
after knife attack
Scope project SAT - Specificaties
• Ontwikkeling van een gecombineerd snijwerend
en steekwerend kledingstuk met volgende
eigenschappen :
– Licht gewicht (traditioneel : 2,5 kg  target : 1,7 kg Large)
– Comfortabel (niet irriterend) & ademend
– Snijwerende bescherming ISO 13997 (minimum “level 4”) met
combinatie van anti-slash bescherming volgens nieuwe CASTnorm ‘level 1’ op de hogere beschermingszones (vitale organen)
– Steekwerende bescherming volgens HOSDB 2007-test methode :
=> energie level E2 : minimum 20 Joule (maxim 20mm
penetratie mes)
– Zoveel mogelijk naadloos werken
– Moet op de huid kunnen gedragen worden
Geselecteerde test-methodes snijbescherming
Slash standards
EN388 : 2003
EN ISO 13997 : 1999
HOS DB slash resistance standard for UK Police
Protective gloves against mechanical risks
Protective clothing
2006 Version / Publication N° 48/05
Mechanical properties
Determination of resistance to cutting by sharp objects
Classification level
Level 1
Level 2
Level 3
Level 4
Level 5
index 1,2
2,5
5
10
20
Not determined (values in Newton)
Pass / Fail
Pass : no penetration with a force less than 60N
AND average force (9 slashes) ≥ 80N
Samples required
2 samples (60x100)mm
Min 3 samples not less than (25x100)mm
3 samples (300x500)mm
Cuts needed
10
15
9
Moving part
Blade
Blade
Blade
TESTS RESULTS
Reference
Studie @ SAT
(sedert 2012)
•
Onderzoek van
snijwerende
bescherming van
concurrentiestalen naar
de norm ISO 13997
Doel van deze studie :
-> ontwikkeling van een
snijwerende basistextiel :
- laaggewicht
- Minimum “level 4” –ISO
13997
Supplier
Neck protection 2 layers
Ref 52-10-13
Development 2 layers
M+P114004 NPK: -1,0
Slash resistance SR 97-5/D
Higher density
Development 2 layers
M+P114004 NPK:-0,5
Slash resistance SR 97-5/D
Weight
(g/m²)
Break force (N)
Final Graph of
Loads vs. Stroke
Length
EN ISO 13997
EN 388
HOSDB SLASH
SIOEN
1930
44,4 N
SIOEN
900
In test (results for
next week)
Report 1.13.11.20
60,5 N
SIOEN
740
31,33 N
Report 1.13.10.60
56,3 N
A
966
26.0 N
SIOEN
450
In test (results for
next week)
B
B
1000
19.7 N
Level 5 (>20N)
C
C
450
17.0 N
Level 5 (>20N)
Level 5
index 23,7
index 23,9
A
Development 1 layer
M+P114004 NPK: -1,0
Slash resistance SR 97-4/E
Higher density
Development 1 layer
M+P114004 NPK: -0,5
Slash resistance SR 97-4/E
SIOEN
370
15,43 N
Neck protection 1 layer
SIOEN
965
15,31 N
D1
D
685
15,1 N
D2
D
650
7,6 N
E
E
650
6,5 N
Report 1.13.11.20
11,2 N
Report 1.13.10.60
7,3 N
Overzicht van andere specificaties
Parameter
ANTI-SLASH &
ANT-CUT
Comfort /
Ergonomic
Air-permeability ASTM D73704
645 l/m²/sec (100mm WC).
Cyto-toxic-effect ISO 10993-5
No cause of Cyto-toxic effect
Durability
Shrinkage after
25x washing
Norm / test
method
EN 5077(washing
40° ISO6330) & linedrying
Single density
Double density
Comparable with AMC1 SioCOOL fabric
Warp : 2,1%
Weft : 4,3%
Conform EN5077(<5%)
Medische benadering door
2 chirurgen : Body mapping @ SAT
Thesis : safety standards for stab-resistant body armour
Anthony Bleetman
Ligging van de diverse organen
Zones waar
Steekwerend+
snijwerend
van belang zijn
Finale conclusie –
kledingstuk ~ body mapping
Front
Back
Final conclusie – met kraag
Front
Back
Medische verklaring van 2 chirurgen
Praktische testing
Toepassingsgebieden
Agression with knives on the streets
Toepassingsgebieden
Surveillance people
in public transport
City guards on the
street
Night worker on
streets
Security on
concerts / events
Prison services
Glass industry
‘Heavy work’
Time pressure
industry
Metal industry
Kledingstukken
Some conclusions coming from
studies / thesis / reports /
publications
Need for knife protection
• Study – HOSDB
– Increase of knife carriers(especially pen knifes)
• Eg : UK :
– 2009 : According to a Youth Crime Survey in England & Wales,
23% of young people in mainstream education reported
carrying a knife
– 2011/2012 : 54% of young people in PRUs reported carrying a
knife
• European report on preventing violence and knife
crime among young people :
– Germany : young people between 14 and 21 years old are
causing more assaults with knifes
Rates for less severe and more severe assaults by age group in
Germany, 1993–2009
The Management of Knife Injuries A CONSENSUS STATEMENT - May 2011
• Made by the association of surgeons of GB & Irelandsupported by the Metropolitan police & the surgical
foundation
– Knifes are used in approximately 6% of all violent crime in
the UK; this equates to approximately 150,000 incidents
per year.
– Knife crime in particular is on the increase, especially in
urban areas.
– London : It is known that many young people today do not
feel part of a close community. They feel alienated by
society and seek refuge in gangs, alcohol and violence.
Their opportunity for employment is reduced,and they are
at the mercy of economic forces.
.Human performance in slash attacks :
• 87 male and female volunteers (between 2055 yrs) were asked to make one slash attack
with an instrumented blade. No instructions
on how to slash the target were given, each
subject stood a metre in front of a target and
the impact forces and direction of each attack
was recorded
Human performance in slash attacks
Study : mechanism of injury
• Military trainees were assessed in their knife
slashing technique against a vertical humansized target. 67 male soldiers were given a
large blade and were asked to slash a vertical
target of adult proportions with the intention
of attacking and causing injury.
Assaliant technique in knife slash attacks
– Anthony Bleetman (journal of clinical
Forensic Medicine)