Detailed Project Report (DPR) on tyre retreading

Detailed Project Report (DPR) on tyre retreading
Code #3954
Original
India
Countries
Translation provided by Google AI

Industry Overview

Tyres are manufactured using natural rubber or synthetic rubber combined with carbon, oil, sulphur, and other chemicals through controlled processing and vulcanization. Natural rubber is obtained as latex from the bark of the Hevea brasiliensis rubber tree, while synthetic rubber comprises man-made vulcanisable rubber polymers.

Tyre retreading extends the useful life of worn tyres by removing the worn tread and bonding new tread material to an approved tyre casing. Since the casing generally remains structurally sound after the tread wears, retreading provides both economic and environmental benefits. Car tyres are commonly retreaded once, while OTR tyres may be retreaded two or three times and aircraft tyres can be retreaded many times, subject to proper casing inspection.

The industry uses conventional hot retreading as well as pre-cured tread rubber, commonly known as cold retreading. In the pre-cured process, tread rubber is manufactured under controlled factory conditions with a predetermined tread pattern and subsequently bonded to the tyre casing. Retreaded tyres can provide substantial cost savings compared with new tyres, while suitable tread compounds and proper processing help restore serviceability, grip, and mileage. The report covers OTR tyre retreading, tyre construction, retreading processes, machinery, consumables, market position, plant location factors, project implementation, suppliers, and project economics.

Cost Estimation

Particulars Value
Plant Capacity 18 Pcs/Day
Land & Building (500 sq.mt.) Rs. 29 Lac
Plant & Machinery Rs. 1.45 Lac
Working Capital for 1 Month Rs. 17 Lac
Total Capital Investment Rs. 53 Lac
Rate of Return 53%
Break Even Point 48%

Content Index

  • INTRODUCTION
  • SIZES OF OTR TYRES RETREATED (RADIAL AND CROSS PLY):
  • DUMP TRUCKS:
  • LOADERS & GRADERS:
  • TYPES OF TYRES TO BE
  • PROJECT LOCATION-CHENNAI
  • MAP OF DISTRICT
  • CLIMATE
  • TRANSPORTATION
  • TRANSPORTATION WITHIN THE CITY
  • TYPES OF TYRE RETREADING
  • COLD RETREADING
  • POINTS TO NOTE:
  • HOT RETREADING
  • ARGUMENTS IN FAVOUR OF HOT RETREADING:
  • POINTS TO NOTE:
  • CONSTRUCTION OF TYRES
  • TYRES – THEIR CONSTRUCTION & MAINTENANCE
  • TIRE COMPONENTS
  • BASIC COMPONENTS /TYRE CONSTRUCTION
  • TREAD
  • SIDEWALL
  • PLIES
  • CARCASS OR CORD BODY
  • BEAD
  • BELTS
  • LINER
  • BREAKERS
  • STEEL BREAKERS
  • A SUBSET OF TYRE CONSTRUCTION: TYRE TREADS.
  • TREAD PATTERNS
  • TYRE DIMENSIONS
  • ASPECT RATIO
  • OVERALL DIAMETER
  • OVERALL WIDTH
  • SECTION WIDTH
  • TREAD WIDTH
  • TREAD DEPTH
  • SECTION HEIGHT
  • RIM WIDTH
  • NOMINAL RIM DIAMETER
  • STATIC LOADED RADIUS
  • LOADED WIDTH
  • MINIMUM DUAL SPACING
  • REVOLUTIONS PER MILE (RPM)
  • LOAD RATING
  • INFLATION PRESSURE
  • SPEED RATING
  • CONSTRUCTION
  • PR (PLY RATING)
  • TYRE USE CLASSIFICATIONS
  • PASSENGER AND LIGHT TRUCK
  • RUN-FLAT TYRE
  • HEAVY DUTY TRUCK TYRES
  • OFF-THE-ROAD (OTR)
  • AGRICULTURAL
  • RACING
  • INDUSTRIAL
  • BICYCLE
  • AIRCRAFT
  • MOTORCYCLE
  • BIAS/CROSSPLY & RADIAL TYPES OF TYRES
  • RADIAL TYRES
  • BIAS /CROSS PLY TYRES
  • THE REASONS FOR THIS LIMITED USE OF BIAS TYRES ARE:
  • TYRE RETREADING COMPOUND:
  • IN RETREADING UNIT:
  • HYDRAULIC HOIST:
  • HYDRAULIC JACK:
  • PRODUCT & ITS APPLICATION
  • B.I.S. OR OTHER INTERNATIONAL STANDARDS OF SPECIFICATION
  • PROPERTIES
  • MANUFACTURING PROCESS
  • RETREADING PROCESS
  • THERE ARE SIX KEY STAGES TO THE RETREADING PROCESS:
  • INITIAL INSPECTION
  • BUFFING
  • PREPARATION
  • BUILDING
  • CURING
  • FINAL INSPECTION
  • LIST OF MACHINERY
  • RETREAD EQUIPMENT
  • RETREAD CONSUMABLES
  • RETREADING TOOLS
  • REPAIR EQUIPMENT
  • PROS & CONS OF TIRE RETREADING
  • PROS OF TIRE RETREADING
  • CONS OF TYRE RETREADING
  • MARKET POSITION
  • TYPES OF RETREADERS
  • INNOVATION IS KEY TO ADVANCING THE SECTOR
  • MARANGONI-GRP
  • MAJOR PLAYERS IN THE SAME MOULD FOR EXPANSION
  • HANKOOK-TIRE
  • GLOBAL RETREAD TIRE MARKET: SEGMENTATION
  • ASIA-PACIFIC CONTINUES TO BE THE LARGEST MARKET
  • COMPETITIVE LANDSCAPE
  • PRESENT MANUFACTURERS
  • PLANT LOCATION FACTORS
  • PRIMARY FACTORS
  • 1. RAW-MATERIAL SUPPLY:
  • 2. MARKETS:
  • 3. POWER AND FUEL SUPPLY:
  • 4. WATER SUPPLY:
  • 5. CLIMATE:
  • 6. TRANSPORTATION:
  • 7. WASTE DISPOSAL:
  • 8. LABOR:
  • 9. REGULATORY LAWS:
  • 10. TAXES:
  • 11. SITE CHARACTERISTICS:
  • 12. COMMUNITY FACTORS:
  • 13. VULNERABILITY TO WARTIME ATTACK:
  • 14. FLOOD AND FIRE CONTROL:
  • EXPLANATION OF TERMS USED IN THE PROJECT REPORT
  • 1. DEPRECIATION:
  • 2. FIXED ASSETS:
  • 3. WORKING CAPITAL:
  • 4. BREAK-EVEN POINT:
  • 5. OTHER FIXED EXPENSES:
  • 6. MARGIN MONEY:
  • 7. TERM LOANS:
  • 8. TOTAL LOAD:
  • 9. LAND AREA/MAN POWER RATIO:
  • PROJECT IMPLEMENTATION SCHEDULES
  • INTRODUCTION
  • PROJECT HANDLING
  • PROJECT SCHEDULING
  • PROJECT CONSTRUCTION SCHEDULE
  • TIME SCHEDULE
  • COMPLETE PLANT SUPPLIERS
  • SUPPLIERS OF OTHERS PLANT AND MACHINERIES
  • AIR COMPRESSORS
  • BOILERS
  • BUFFING MACHINE
  • SUPPLIERS OF RAW MATERIALS
  • TYRE RETREADING MATERIALS & SUPPLIES
  • MACHINERY PHOTOGRAPHS
  • TIRE BUFFER
  • TREAD BUILDER
  • ELECTRIC CURING CHAMBER
  • ENVELOPE EXPANDER
  • CEMENT CHURNER & CYCLONE FILTER
  • RAIL SYSTEM / MONORAIL
  • INSPECTION SPREADER
  • EXPANDABLE RIMS AND HUB
  • CURING RIMS & BEAD SEAL PLATE
  • RIMMING STATION
  • SNAP SEAL
  • TIRE STAND, TROLLEY AND SKIVING
  • NAIL HOLE DETECTOR
  • TREAD PREPARATION TABLE WITH ROTARY CUTTER
  • RETREAD CONSUMABLES
  • CURING BAG
  • ENVELOPE
  • RETREADING TOOLS
  • REPAIR EQUIPMENT
  • EXTRUDER GUN TIRE SPOTTER
  • PRODUCT PHOTOGRAPHS

Appendix

  • 01. PLANT ECONOMICS
  • 02. LAND & BUILDING
  • 03. PLANT AND MACHINERY
  • 04. OTHER FIXED ASSESTS
  • 05. FIXED CAPITAL
  • 06. RAW MATERIAL
  • 07. SALARY AND WAGES
  • 08. UTILITIES AND OVERHEADS
  • 09. TOTAL WORKING CAPITAL
  • 10. TOTAL CAPITAL INVESTMENT
  • 11. COST OF PRODUCTION
  • 12. TURN OVER/ANNUM
  • 13. BREAK EVEN POINT
  • 14. RESOURCES FOR FINANCE
  • 15. INSTALMENT PAYABLE IN 5 YEARS
  • 16. DEPRECIATION CHART FOR 5 YEARS
  • 17. PROFIT ANALYSIS FOR 5 YEARS
  • 18. PROJECTED BALANCE SHEET FOR (5 YEARS)

Frequently Asked Questions

Tyre retreading is the process of replacing a worn tyre tread with new tread material while retaining a suitable existing casing. The worn tread is removed, the casing is inspected and prepared, and a new tread is bonded through a controlled curing process. Retreading allows a structurally sound tyre casing to be used again rather than being discarded after the original tread has worn away. It is widely applicable to commercial, heavy-duty, OTR, agricultural, industrial, and other tyre categories where casing quality permits safe retreading.

The main stages of tyre retreading are initial inspection, buffing, preparation, building, curing, and final inspection. During initial inspection, the casing is checked for damage and suitability. Buffing removes the worn tread and prepares the surface. Preparation includes repairing and conditioning the casing, followed by building the new tread. Curing bonds and vulcanizes the tread under controlled heat, pressure, or other specified conditions. Final inspection verifies the finished retread before it is released for use.

Cold process tyre retreading uses pre-cured tread rubber that already contains the required tread pattern. The pre-cured tread is manufactured under controlled factory conditions and subsequently bonded to a prepared tyre casing during the retreading operation. Unlike conventional hot retreading, this approach eliminates the need to form the tread pattern directly through a tread matrix during the final curing stage. The report describes pre-cured tread rubber retreading as a technology intended to provide a reliable, consistently finished retread when appropriate materials, equipment, and process controls are used.

Hot and cold tyre retreading mainly differ in how the replacement tread is formed and cured. Hot retreading conventionally uses uncured rubber and a mould or matrix to create the tread pattern during vulcanization. Cold retreading uses a pre-cured tread with its tread pattern already formed, which is then bonded to the prepared casing. Both processes require careful casing inspection, surface preparation, bonding, curing, and final quality inspection. The appropriate process depends on tyre type, equipment, operating requirements, materials, and the desired production system.

Tyre retreading is considered economical because it reuses a suitable existing tyre casing instead of manufacturing an entirely new tyre. The report states that retreaded tyres can have a purchase price normally between 25 % and 50% lower than comparable new tyres and also cites a 30%-50% lower cost for a remolded tyre. Retreading can therefore reduce replacement expenditure while extending casing utilization. Actual economics depend on casing condition, tread material, processing costs, tyre application, raw material prices, and operating efficiency.

A wide range of tyres can be considered for retreading when their casings meet the required inspection and safety criteria. The report specifically covers OTR tyres, including applications for dump trucks, loaders, and graders, and discusses radial and cross-ply constructions. Tyre classifications covered in the report also include passenger and light truck, heavy-duty truck, agricultural, racing, industrial, aircraft, motorcycle, and bicycle tyres. Retreading suitability is not determined solely by tyre type; casing condition, damage history, construction, application, and applicable quality requirements must also be evaluated.

A tyre retreading plant requires equipment for inspection, buffing, tread preparation, building, curing, handling, and repair. The report lists equipment such as a tyre buffer, tread builder, electric curing chamber, envelope expander, inspection spreader, expandable rims and hub, curing rims and bead seal plate, rimming station, nail hole detector, tread preparation table with rotary cutter, and repair equipment. Supporting equipment and tools include air compressors, boilers, hydraulic equipment, rail systems or monorails, curing bags, envelopes, extruder guns, and tyre spotters.

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