Footwear For Police Personnel
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Transcript of Footwear For Police Personnel
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FOOTWEAR FOR POLICE PERSONNEL
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PREMIER INSTITUTEPREMIER INSTITUTE
Footwear Design and Development Institute commonly known, as “FDDI” is the leading Institute in India for Human Resource Development and Product Development for the footwear industry.
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We provide one-stop solution to the footwear and allied industry in the following areas:
Training Testing Services (Physical &
Chemical) Technical Consultancy CAD-CAM Facilities Designing & Product
Development Resources & Library Facilities
SERVICESSERVICES
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INFRASTRUCTUREINFRASTRUCTUREFDDI CAMPUS
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INFRASTRUCTUREINFRASTRUCTURE
HOSTEL
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INFRASTRUCTUREINFRASTRUCTURE
LIBRARY
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INFRASTRUCTUREINFRASTRUCTURE
WORKSHOP
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INFRASTRUCTUREINFRASTRUCTUREDESIGN CENTER
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INFRASTRUCTUREINFRASTRUCTURE
LABORATORY
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INFRASTRUCTUREINFRASTRUCTURECNC Machining
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INFRASTRUCTUREINFRASTRUCTUREA SEMINAR at FDDI
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ACCREDITATIONSACCREDITATIONS
ISO 9001 Certification awarded by BVQI, Switzerland
ISO 14001 Certificate awarded by BVQI, Switzerland
Accreditation of FDDI’s Laboratory by PFI Pirmasens, Germany
ISO 17025 Certification for FDDI Laboratories by DAR, Germany
FDDI Laboratories are approved by BIS, DGS&D, Defence Services, Railways,Police and General Motors
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IMPORTANCE OF QUALITY
The function of footwear is dynamic & not static
1. Protection
2. Comfort
3. Durability
4. Aesthetic look
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REQUIREMENTS
PROTECTION
Protection from rough road
Protection from water & dust
Protection from heat & cold
Protection from nails & thorns
Protection from insects
Slip resistance etc.
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REQUIREMENTS
COMFORT
Proper fit Breath ability Cushioning – shock absorption Sweat absorption & disorption Heat & cold insulation Light weight Flexibility & soft feel etc.
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REQUIREMENTS
DURABILITY Shape retention Finish retention etc. Abrasion resistance
AESTHETIC LOOK Good look Latest fashion & trend Pleasing color Matching with the dresses
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QUALITY ASSESSMENT
1. Thumb Tests
2. User trials”/”Wear Trials”.
3. Laboratory test - Quality control tests
- Specification tests- Research & development tests
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MANUFACTURING PROCESS
CONSTRUCTION
Stuck on process Goodyear welted Stitch down Direct vulcanizing process Direct Injection process
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MATERIALS
UPPER
Chrome tanned leather Semi-chrome tanned leather Vegetable tanned lining
leather Woven textile materials Coated fabrics
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TYPES OF LEATHER FOR SAFETY SHOES Full GrainLeather
CorrectedGrain leather
NubuckLeather
PigmentedSplit
PrintedLeather
TensileStrength
V. Good V. Good Good Poor V. Good
Breathability
Excellent V. Good Excellent Average Good
FlexingProperty
Excellent V. Good Excellent Poor Good
TearResistance
Excellent V. Good Good Poor V. Good
Water Proofness
Good V. Good Poor V. Good
V. Good(din leather is excellent)
FinishRetention
Good V. Good Poor Good V. Good
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MATERIALSSOLING
Vegetable tanned leather Rubber & Micro cellular
rubber PVC & Blown PVC TPR & Blown TPR PU & TPU EVA - Die cut and moulded
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SOLING PROPERTIESSole type Hot
contactSevere
coldOils
ResistanceChemical Resistan
ce
Abrasion Resistan
ce
Comfort
Leather 300°C Suitable Suitable Some resistance
Unsuitable
Light, less cushion
Crepe Becomes soft & tacky
Becomes hard & stiff
Unsuitable Suitable Suitable Heavy with moderate cushion
EVA Suffers shrinkage
- 25°C Unsuitable Suitable Unsuitable
Very light with good cushion
Thermoplastic rubber (TR) (SBS type)
100°C - 90°C Unsuitable Suitable Unsuitable
Heavy with moderate cushion
PVC 100°C - 10°C # Unsuitable Suitable Suitable Heavy with less cushion
PVC blends 100°C - 15°C # Suitable* Suitable Suitable Heavy with less cushion
{Polyurethane (PU)
200°C - 30°C Polyester Pus more suited than polyether Pus
Suitable Suitable Light, good cushion
Thermoplastic PU (TPU)
100°C - 40°C Suitable Suitable Heavy with moderate cushion
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SOLING PROPERTIES-Natural (NR) 300°C - 65°C Unsuitabl
eSuitable
Suitable (also resistant to cutting objects such as metal swarf)
Heavy with moderate cushion
-Styrene butadiene (SBR)
300°C - 50°C Unstable
-Chloroprene (CR) 300°C - 40°C Suitable
-Butadiene (BR) 300°C - 70°C Unsuitable
-Nitrile (NBR) 300°C - 15°C+
Suitable *
+ 35% Nitrile
• Dependant on nitrile content
“ Dependant on type & amount of secondary polymers
# Dependent on type of plasticizer special formulations have achieved – 30°C in Ross flex tests
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CONSTRUCTIONConstruction Bond
strengthFinish Water
proofnessFlexibility
Remarks
Stuck on Average Excellent
Average Good Any material unit sole; wide range
Stitch down Average Average
Poor V. good
Generally leather sole
Good year welted Good Average
V. Good Poor Costly footwear
Vulcanized direct moulded
Excellent Average
V. Good Good Used for safety shoes of rubber sole
Direct injection moulded
Excellent V. Good
V. Good Good TPR, PVC are used in soling material
PU R.I.M. Excellent V. Good
V. Good Good PU reaction injection method
PU R.P.M. V. Good V. Good
V. Good Good PU reaction pouring method
Injection compression moulded
Excellent V. Good
V. Good Average
Thermo plastic PU material
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California - Sequence of operation
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Cemented or Stuck-on - Sequence of operations
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Goodyear Welted - Sequence of operation
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True Moccasin - Sequence of operations
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Stitch down - Sequence of operation
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IMPORTANCE OF QUALITY
Problems faced by the police
1. Itching in feet
2. Forming of corn
3. During the summer season, shoes hots
up unbearably
4. Stinking smell after wearing 6-7 hours
5. Cracks and deformities in toe & heal
develop in 5 to 6 months
6. Does not take polish and have dull
shining
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SUGGESTIONSIt is recommended that footwear
With leather upper and leather lining With direct injected PU midsole (polyether)
and TPU outer sole. Alternatively, the sole can be micro cellular
rubber/EVA midsole with rubber outer sole or PU midsole with Rubber outer sole.
With higher thickness pink pong toe puff & counter