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SAFETY FOOTWEAR
TRAINING
Tom Andrews – RED WING SHOES, Sales Manager UAE.
IADC Presentation: Thursday 3rd September 2020.
SAFETY FOOTWEAR TRAINING
• WHY SAFETY FOOTWEAR?
• CORE COMPONENTS OF A WORK BOOT
• SAFETY FEATURES OF A WORK BOOT
WHY DO WE NEED
SAFETY FOOTWEAR?
-The biggest challenge is the almost constant hard surface we
move on every day; streets and flooring..
-Orthopedic seen it is as bad as it could be; our body and feet
are made for rugged terrain and varied use of muscles, tendons
and joints, says chiropodist.
-Walking on hard surfaces will over time impact us.
FOTTERAPEUT: Lise Burud Smestad : Kilde: http://www.klikk.no/helse/dinkropp/velvare/article594751.ece
Lise Burud Smestad, Chiropodist:
Our foot is one of the body's most advanced parts
Each foot has:
• 26 bones • 33 joints • More than 100 tendons, muscles and different ligaments • The foot contains a quarter of all the bones in our body • Heel bone is the largest of the 26 bones in foot *The foot has 250,000 sweat glands. When they are active, they can produce from 12 to 25 ounces of sweat per day and sometimes more
THE FOOT
Shock Absorption & Potential Injuries
Heel bone Our natural shock absorber in the heel's “fat pad” - The heel is designed to accommodate the largest pressure and therefore has a “fat pad” of about six millimeters. The forefoot has approximately four millimeters fat.
Dangers / Potential Injuries - Prolonged stress leads to adipose tissue cushioning effect
decreases so that the skin will remain closer to the heel bone which cause pain.
- Increased resistance to the movement of the tendons in the arch will give plantar fasciitis which is an inflammation of the ligaments and causes severe heel pain.
- Metatarsalgia common foot disorder that can affect the bones and joints at the ball of the foot.
Boot Flexibility, Boot Stability/Support and Increased Cushioning can help to avoid potential foot injuries and pain
THE FOOT’S PRESSURE POINTS
Lateral ligament injury - Outer ligament injuries
The cause: - Works on uneven surfaces ... - Climb stairs and ladders ....
with footwear that does not give the foot adequate support
and stability in the ankle area.
The Scope: - Can be a simple injury with no or low absenteeism - Can cause fracture of ligaments with long absence
SUPPORT AND STABILITY
Heel Counter Stability: • Stable heel counter • Heel area width
Torsion Stability: • Mid-sole stability • Construction method
X
٧
Flexural Stability: • Mid-sole stable in the arch area • Mid-sole has arch support
X
٧ ٧
X
x
BOOT STABILITY & FLEXIBILITY
CORE COMPONENTS
WORK BOOT
RED WING WORK BOOTS 160+ steps in process!
Collar
Heel
Counter
Tongue/Gusset
Toe Box
Vamp
Medial Side
Lateral Side
BOOT TERMINOLOGY
Midsole
Welt
Outsole
Eyelets
RW Iconic
Triple Stitch Medial Side
Lateral Side
Outsole
Midsole
Welt
Heel
Counter
Shaft
Side Pulls
Toe Box RW Iconic
Triple Stitch Vamp
Full grain leather: (EN 20345-WRU demand)
Split: The grain part is removed
UPPER
TOP GRAIN
SANDED TOP GRAIN
TOP GRAIN REMOVED
low abrasion, absorb water
abrasion and water resistance
low abrasion, absorb water
PU coated leather:
Thin PU film “coated" to the split leather
Nubuck: Sanded full grain leather (Oiled nubuck = good water resistance, WRU)
WHAT MAKES A RED WING BOOT WATERPROOF
• EN certification
• WRU – Upper material is tested and are
water repellent
• WR – Boot is waterproof tested – needs
a waterproof bootie construction.
1. Upper Material is Water-Resistant or Waterproof (Leather or Non-Leather)
2. Boot is built with 3 layer approach
1. Lining added to help move moisture away from foot
2. Foam added for comfort & protection
3. Waterproof bootie is an additional barrier to keep water out
SATRA TM94:2018 – ‘Breaking force and extension at break of shoelaces’ is used to determine the breaking force and extension at break of shoelaces of all types, in both dry and wet conditions
SATRA TM93:2004 – (ISO 22774:2004) - Abrasion between shoelaces and eyelets is used to determine the breaking force between lace and eyelet. Red Wing test requirement
SHOELACE TESTING SATRA TM94
SATRA TM93
As the shoe lining comes into direct contact with the foot, the
quality of the lining and its properties are very important.
• #1 lining used in a Red Wing Boot Combat Super Knit
• Quick Drying, Moisture Wicking, High Abrasion & Tear Resistance
• Agion also added to some which provides odor control
• Mesh Linings also very common Breathability & Comfort
BOOT MATERIALS – LINING
Common characteristics/features in premium work boot liners: - AntiMicrobial: Odor Control - Moisture wicking: Pulls moisture away from skin, easier to evaporate - Quick Drying: Dries fast when boots are wet or damp from sweat - High abrasion and tear resistance: Critical for Red Wing
- High demand of AR required at RW (50,000 cycles). - EN requirements – Wet (25,600 cycles for heel grip), Wet (12,800 for qtr/vamp)
SAFETY FEATURES
Steel Aluminum
SAFETY TOE CAP: METAL
• Generally strong, thin & economic
• Most traditional material safety toe
• Material thickness positive = good volume
for toes
• Heavy - Known for protection vs light weight
• Retain the cold
• Very strong but with less weight than steel...
~>30% lighter than steel
• Material thickness positive = good volume
for toes
• Great for appearance - lower profile
Fiberglass Carbon fiber / Nano Toe Composite/Plastic/Polymer
SAFETY TOE CAP: NON-METALLIC
• High strength fiberglass + modified
resin - Incredibly strong yet metal free
• Very rigid, high performance
• Consistent quality in all sizes as well
as for all production volumes
• Good material for low or high temps.
• More expensive than other materials
• High strength fiberglass + modified
resin
• Extremely rigid, guarantee high
performance with thinner walls
• Consistent quality in all sizes as well
as for all production volumes
• Good material for low or high temps
• More expensive than other materials.
• Light weight and metal free
• More inexpensive than other
materials
• Less consistent with testing as
other materials
• Good material for low or high
temperatures.
Steel • Excellent protection against fine wire and needles • Stiff - affects resistance when walking • Retain the cold • Affects shock absorption capability
Non-metallic
• Flexible – Does not affect the foots movement • Does not retain the cold • Does not affect the shock absorption ability
EN ISO 20345 – 1100N
270 lbs = 1200n
Rubber
• Best material for achieving best in class slip
• Best slip resistance is achieved with a combination of rubber blends and sole
pattern
• Only material that will achieve heat resistance – HRO level at 300oC
PU
• Organic polymer known for its resilience and compression resistance
• Is much lighter material than rubber
• Has better rebound than rubber
• ShieldLite/ComfortMax is added BASF Hydrolysis plus
SuperSole PU
• Legacy style – iconic platform in RW Brand
• Lightweight single density, flexible
• Re-soleable in Red Wing, Minn
• Best for Oil/Gas
OUTSOLE MATERIALS
ELECTRICAL HAZARD (EH)
Electric shock incidents, commonly
referred to as “shocks,” occur when
a human body physically becomes
a portion of an energized electrical
circuit. This happens when current
flowing through an electrical circuit
flows through a portion of the
human body.
Electrostatic discharge (ESD)
The ESD occurs when
differently-charged objects are
brought close together or when
the dielectric between them
breaks down, often creating a
visible spark which can ignite
in areas with flammable
material or explosives, Or even
damage sensitive electronics.
Antistatic EN – SD ASTM
Petroking ESD CEI EN 61340-5-1:2016/COR1:2017, CEI EN IEC 61340-4-5:2018 CEI EN IEC 61340-4-3:2018
SRA – Ceramic tile with detergent/soap
SRB – Steel with glycerin
SRC – Both
EN ISO 20345:2011 (EN ISO 13287)
• Properties for desired slip resistance are adjusted with the outsole material
in combination with the outsole pattern/Lugs
• One combination can work perfect for one surface, and another terrible on
others
• EN SRC is done to achieve an average good result on different surfaces.
Satra Slip = EN ISO 13287
SLIP RESISTANCE
THANK YOU!