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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